Search Results — 2000 specimen records retrieved (1331 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC77965  Abies concolor Doris K. Kildale 1926-9-5 2612 Humboldt Lasseck's Peaks, top of ridge at Goat Camp 1661 Comment
  HSC54602  Abies concolor Overton, Butler 1979-7-24 9684 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC72979  Abies concolor Gail Newton 1980-7-14 1514 Humboldt Near Deadman Ridge 1097 Comment
  CAS-BOT-BC78052  Abies grandis Doris K. Kildale 1927-2-20 2964 Humboldt Korbel Hill at Angel's Ranch 304 Comment
  UCD134238  Abies grandis T. I. Storer 1931-7-1 2225 Humboldt Coast. Comment
  CHSC32897  Abronia latifolia J. P. Smith; Advanced Taxonomy Class 1971-10-6 4946 Humboldt Dunes at the end of Murray Road in McKinleyville. Comment
  HSC59741  Abronia latifolia Clark L. Miller 1979-5-9 6117 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  CAS-BOT-BC383851  Abronia latifolia Ira L. Wiggins 1932-7-19 5888 Humboldt Near Clam Beach, eight mi. north of Arcata Comment
  UC524123  Abronia latifolia Ira L. Wiggins 1932-7-19 5888 Humboldt 8 mi n Arcata (Sand dunes near Clam Beach) Comment
  POM264508  Abronia umbellata subsp. breviflora H. E. Parks 1941-09 24212 Humboldt Mouth of Little River. Comment
  HSC16139  Abronia umbellata var. breviflora R. C. Hoover 1965-5-18 53 Humboldt Clam beach. Comment
  CAS-BOT-BC436976  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile northwest of Fieldbrook Comment
  CAS-BOT-BC330543  Acer circinatum Joseph P. Tracy 1942-7-26 17294 Humboldt Valley of South Yager Creek 609 Comment
  POM89162  Acer circinatum Joseph P. Tracy 1920-8-1 5346 Humboldt Kneeland Prairie Lawrence Creek 457 Comment
  HSC73028  Acer glabrum var. torreyi Gail Newton 1980-7-23 1757 Humboldt Near Packsaddle Ridge 1463 Comment
  CAS-BOT-BC331587  Acer macrophyllum Doris K. Kildale 1926-8-15 2527 Humboldt Willow Creek near mouth - between first and second fords 152 Comment
  RSA624389  Acer macrophyllum Louis C. Wheeler 1952-9-14 6930 Humboldt Steep east slope, associated with Umbellularia, Quercus garryana, Pseudotsuga taxifolia. Young tree ca. 8 meters tall. (#5) (Leaves from this tree for analysis). Comment
  HSC28955  Achillea millefolium Thomas W. Nelson 1971-11-11 597 Humboldt Foot of Murray Rd., McKinleyville. Comment
  HSC72789  Achillea millefolium M. A. Baker 1980-6-26 2399 Humboldt Near Sims Creek 610 Comment
  UC1125415  Achillea millefolium H. L. Person 1931-7-30 19358 Humboldt Fieldbrook; Eureka Quad. Comment
  UCSB30612  Achillea millefolium Edwards, David 1974-7-26 Humboldt At the top of the E. bank of the Mad River, at its junction with Puter Creek, ca. 2 mi. SW. of Korbel 27 Comment
  CAS-BOT-BC28584  Achillea millefolium John Thomas Howell 1931-6-17 6718 Humboldt Mouth of Van Duzen River Comment
  UC854590  Achlys californica Elizabeth Parsons Hawver June 1915 Humboldt Carlotta Comment
  CAS-BOT-BC400018  Achlys triphylla Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CHSC19744  Achlys triphylla D. E. Anderson 1965-5-1 3575 Humboldt 4--5 miles west of jct. Bluff Creek Rd. and Hw. 96, along Bluff Cr. Rd. Comment
  HSC61059  Achlys triphylla Jimerson, J. Pageau 1979-6-12 534 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  HSC100397  Achlys triphylla Carl C. Marshall Jun 1886 328 Humboldt Hills. Comment
  HSC3330  Achlys triphylla Francis Winter 1960-4-23 Humboldt 1 mi. S of Simpson Creek, Korbel-Maple Creek Rd. 213 Comment
  UC526753  Achnatherum lemmonii Joseph P. Tracy 1930-7-10 8866 Humboldt Brannan Mountain Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC526754  Achnatherum lemmonii Joseph P. Tracy 1933-6-13 12597 Humboldt On road from Hoopa westward to Bair's (near summit); Hoopa Mountain 1066 Comment
  UCD55568  Achnatherum lemmonii W. Robert Powell 1958-7-10 s.n. Humboldt 6 miles northeast of Lord Ellis Summit. 1158 Comment
  SBBG67348  Acmispon americanus R. Hartwell 1938-8-3 98 Humboldt near Weott Comment
  UCD104287  Acmispon parviflorus Linda M. Barker 1976-4-30 1410 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA20784  Aconitum columbianum Carl B. Wolf 1937-8-13 9249 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  UC180208  Aconitum columbianum Joseph P. Tracy 1914-7-4 4526 Humboldt High Prairie on Bald Mt.; Northern Coast Ranges 1066 Comment
  HSC56085  Aconitum columbianum subsp. columbianum G. L. Clifton, Griswold 1979-7-31 11773 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC56210  Aconitum columbianum subsp. viviparum G. L. Clifton, Griswold 1979-8-2 12215 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC53838  Aconogonon phytolaccifolium Griswold, Butler 1979-7-10 6289 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC63883  Actaea rubra M. A. Baker 1979-6-27 925 Humboldt Edge of Hoopa Indian Reservation Comment
  HSC4590  Adenocaulon bicolor D. E. Anderson 1961-9-23 1831 Humboldt 2.3 mi. S of Kneeland corner Comment
  SEINET10473553  Adenocaulon bicolor Mary Merello 1993-6-19 Merello 660 Humboldt Along the Weott-Honeydew Road just outside of the Rockerfeller Forest boundary. Redwood Forest. 90 Comment
  CAS-BOT-BC62293  Adiantum aleuticum Carl D. Duncan 1920-9-22 s.n. Humboldt Trinity River, Hoopa Valley Comment
  POM182348  Adiantum aleuticum Joseph P. Tracy 1907-8-20 2604 Humboldt Hydesville 30 Comment
  HSC54875  Agastache urticifolia G. L. Clifton, Griswold 1979-7-25 10852 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC1222668  Agastache urticifolia Joseph P. Tracy 1950-8-8 19279 Humboldt Croghan Hole Trinity Summit; , Croghan Hole 1676 Comment
  UC26061  Agastache urticifolia J. Burtt Davy 1899-6-12 Humboldt Elk Prairie; North Coast Ranges, Elk Prairie Comment
  HSC57997  Ageratina occidentalis G. L. Clifton, Griswold 1979-7-31 11763 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC205167  Ageratina occidentalis Joseph P. Tracy 1900-8-15 5358 Humboldt mouth of Bluff Creek; Klamath River, Bluff Creek 152 Comment
  HSC12532  Agoseris grandiflora Jos. Burtt Davy 1899-6-21 5727 Humboldt Hoopa Valley Comment
  SEINET202732 Image available Agoseris grandiflora Joseph P. Tracy 1945-7-15 17513 Humboldt Trinty River Valley at Willow Creek. 152 Comment
  OBI17128  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1942-7-19 17275 Humboldt Vicinity of Garberville Comment
  UC1199485  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1932-6-26 10272 Humboldt (ne of Bridgeville) Fort Baker Ranch; Bridgeville 762 Comment
  HSC32335  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5616 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  RSA249387  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5586 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  POM319539  Agrostis Patricia Wilder 1968-8-21 4367 Humboldt Big Lagoon Park, just west of U.S. 101 15 Comment
  UC1103368  Agrostis alba J. P. Tracy 1900-9-2 933 1/2 Humboldt immediate vicinity Eureka 0 Comment
  UC186910  Agrostis alba Joseph P. Tracy 1907-7-20 2589 Humboldt ocean beach of Humboldt Bay; Northern Coast Region Comment
  RSA152379  Agrostis densiflora Joseph P. Tracy 1936-6-8 14873 Humboldt Trinidad 6 Comment
  RSA183627  Agrostis densiflora D. E. Anderson 1965-9-5 4073 Humboldt Along Mad River, ca. 3 miles south of Blue Lake. Comment
  POM160890  Agrostis exarata Joseph P. Tracy 1918-7-5 5016 Humboldt White Thorn Valley. 305 Comment
  UC1103376  Agrostis exarata Joseph P. Tracy 1934-6-23 13252 Humboldt along river near Blue Lake; Mad River 15 Comment
  UC1103388  Agrostis exarata J. P. Tracy 1901-6-23 1180 Humboldt immediate vicinity of Eureka 0 Comment
  UC186901  Agrostis exarata J. P. Tracy 1902-6-20 1754 Humboldt vicinity Eureka 0 Comment
  UC186904  Agrostis exarata Joseph P. Tracy 1911-7-7 3386 Humboldt 3 mi nw Junction of Willow Creek with Trinity River; Northern Coast Ranges 914 Comment
  UCD52368  Agrostis exarata A. H. Murphy 1948-10-19 s.n. Humboldt Fred Fearriams Ranch, near Alderpoint. Comment
  CAS-BOT-BC139499  Agrostis hallii Gordon H. True 1965-9-25 2656 Humboldt Klamath River 1.5 mile east of Orleans. 213 Comment
  CAS-BOT-BC139502  Agrostis hallii L. R. Abrams 1916-7-18 6128 Humboldt Arcata to Trinidad. Comment
  OBI22534  Agrostis idahoensis Joseph P. Tracy 1941-8-24 17039 Humboldt South Fork Mtn Comment
  UCD53046  Agrostis microphylla Joseph P. Tracy 1938-7-11 16050 Humboldt near Samoa, on Humboldt Bay. 6 Comment
  SEINET200838 Image available Agrostis semiverticillata Joseph P. Tracy 1943-5-29 17445 Humboldt Eureka. 30 Comment
  UC53501  Agrostis stolonifera Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6203 Humboldt Russ Ranch Comment
  UCD53462  Agrostis stolonifera P. B. Kennedy 1928-7-16 s.n. Humboldt Sea Cliffe, near Trinidad. Comment
  RSA32868  Aira caryophyllea A. A. Heller 1923-7-8 13765 Humboldt Humbolt Camp, 10 miles South of Dyerville Comment
  SEINET3917480  Aira praecox Paul Dryden 1975-5-24 203 Humboldt Samoa Dunes. Dunes off Samoa Blvd. across from the boat landing.; 0 Comment
  RSA517225  Allium acuminatum Barbara Ertter, Thomas J. Delendick 1987-5-16 6920 Humboldt Vista Point just W of Berry Summit on Highway 299, ca. 15 air miles E of Arcata. 915 Comment
  HSC102513  Allium amplectens M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1499 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  CAS-BOT-BC460749  Allium amplectens Doris K. Kildale 1925-6-14 676 Humboldt Head of South Yager Creek. Bald Hills 914 Comment
  JEPS56361  Allium bolanderi W. L. Jepson 1902-7-1 1978 Humboldt Three Creeks to Willow Creek Comment
  SEINET199677  Allium bolanderi J. P. Tracy 1932-6-14 10139 Humboldt S Fork of Trinity River 0 Comment
  SEINET199679  Allium falcifolium J. P. Tracy 1933-7-11 12658 Humboldt Horse Mtn 1433 Comment
  HSC39553  Allium hoffmanii Thomas W. Nelson 1976-6-14 2706 Humboldt S of Lassic Peak 1524 Comment
  OBI35866  Allium siskiyouense David J. Keil 1983-7-2 17327 Humboldt Horse Mountain Summit SW of Willow Creek. Comment
  HSC2987  Allium unifolium J. F. Knezevich 1968-5-14 438 Humboldt 11 mi. S of Ferndale on rd. to Cape Mendocino 305 Comment
  CAS-BOT-BC476601  Allium unifolium Doris K. Kildale 1927-5-15 3296 Humboldt Petrolia. Matlole River Valley Comment
  HSC97998  Allium validum Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  HSC13111  Alnus rubra Steve Dorei 1970-10-13 40 Humboldt Arcata, HSC Campus W of Forestry Building along W edge of parking lot Comment
  OBI6019  Alnus rubra Carl B. Wolf 1931-8-28 2366 Humboldt Redwood hwy , 4-1/2 mi N of fortuna on the road to Eureka Comment
  RSA173960  Alnus rubra R. F. Thorne 1957-9-3 19019 Humboldt Patrick s Point State Park. Comment
  SFV18531  Alnus rubra D. Waller 2002-5-7 71 Humboldt Arcata. Intersection of L. K. Wood and Redwood Ct. 61 Comment
  UC503095  Alnus rubra Joseph P. Tracy 1930-11-16 9255 Humboldt Alton North Coast Ranges, Van Duzen River (along river) 30 Comment
  UC72510  Alnus rubra H. P. Chandler 1905-5-1 Humboldt Eureka Comment
  UCR27989  Alnus rubra A. C. Sanders 1981-8-6 2299 Humboldt Near Orick, 1.6 mi west of Hwy 101 on Davison Road toward Gold Bluffs Beach Comment
  HSC73642  Alnus viridis subsp. sinuata M. A. Baker 1980-7-23 3193 Humboldt Near Orleans Mtn. 1859 Comment
  RSA44474  Alopecurus aequalis Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  RSA129283  Alopecurus geniculatus H. L. Person 1932-5-11 19411 Humboldt Near Arcata 0 Comment
  RSA181868  Alopecurus geniculatus Joseph P. Tracy 1951-6-21 19523 Humboldt back of the Everett Beck house (formerly George Gray) bed of Goose Lake. Hydesville Comment
  UCD55908  Alopecurus geniculatus J. Lenz 1950-6-1 s.n. Humboldt Cranell. Comment
  HSC8894  Alopecurus pratensis D. J. McVean 1965-5-18 78 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  HSC8896  Alopecurus pratensis W. F. Cartwright 1965-5-20 78 Humboldt 5 mi. S of Arcata on Old Arcata Rd. Comment
  UC673032  Amaranthus albus Joseph P. Tracy 1940-10-15 16756 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET10473459  Ambrosia Mary Susan Taylor 1990-8-22 Taylor 6076 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  OBI35979  Ambrosia chamissonis David J. Keil 1983-7-1 17288 Humboldt Ca 5 mi NW of Petrolia along Mattole Rd Comment
  CAS-BOT-BC142891  Amelanchier alnifolia var. semiintegrifolia J. P. Tracy 1909-5-2 2953 Humboldt Near Eureka 152 Comment
  HSC46959  Ammophila arenaria J. P. Smith, Thomas W. Nelson 1977-6-30 9201 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  HSC17844  Anagallis arvensis W. F. Nickel 1965-5-6 Humboldt On Humboldt State University campus, behind Biological Science Bldg. Comment
  SBBG63396  Anaphalis margaritacea R. Hartwell 1938-8-4 Humboldt near Eureka Comment
  HSC12550  Anaphalis margaritacea C. Kline 1970-11-15 71 Humboldt Clam Beach Lagoon Comment
  HSC4628  Anaphalis margaritacea H. E. Parks, S. T. Parks Aug 1943 24237 Humboldt Along Hwy, Stone Lagoon Comment
  UCSC000820  Anaphalis margaritacea H. L. Person 1932-7-16 s.n. Humboldt Highway N. of Trinidad Trinidad - Rock Point Comment
  HSC37344  Anemone deltoidea Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 476 Humboldt Along Lost Man Creek. 38 Comment
  HSC55331  Anemone deltoidea Griswold, Butler 1979-7-12 7175 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  SBBG2107  Anemone deltoidea H. and M. Dearing 1933-5-16 360 Humboldt Weott Comment
  UC249649  Anemone oregana Joseph P. Tracy 1922-4-30 6038 Humboldt Three Creeks; North Coast Ranges 914 Comment
  HSC64348  Anemone oregana var. oregana J. P. Smith, J. O. Sawyer 1973-5-12 6694 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC22553  Anethum graveolens Paul Shields Sep 1955 Humboldt 1 mi. S of Weott Comment
  UC1197378  Angelica genuflexa Joseph P. Tracy 1940-9-26 16733 Humboldt 2 mi s of Fields Landing (Near Still Ranch) 6 Comment
  UC642263  Angelica genuflexa Joseph P. Tracy 1938-9-25 16165 Humboldt near Murphy Meadows (Bald Mountain); Bald Mountain 944 Comment
  JEPS14108  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  RSA21186  Angelica hendersonii C. B. Wolf 1937-8-11 9145 Humboldt 1/2 mile east of Alton. 21 Comment
  HSC21446  Angelica lucida S. J. Hawks 1965-5-18 71 Humboldt Clam Beach. Comment
  HSC21448  Angelica lucida B. R. Templeton 1962-5-15 Humboldt Hwy 101, 3 mi. S of Arcata. Comment
  HSC21452  Angelica lucida Wm. F. Bowman 1968-10-26 Humboldt Big Lagoon County Park, SW corner of Big Lagoon. Comment
  BLMAR426  Angelica tomentosa Clara Sander 2004-9-1 426 Humboldt Titlow Hill, Horse Mt area on Titlow hill road 1554 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-BC271500  Anisocarpus madioides A. G. Vestal 1937-6-20 s.n. Humboldt 4 miles north of Petrolia Comment
  HSC32840  Anisocarpus madioides Thomas W. Nelson, James Nelson 1973-5-28 946 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC5981  Anisocarpus madioides Frances Oldridge 1945-1 Humboldt Kneeland Comment
  SEINET200721 Image available Antennaria rosea J. P. Tracy 1939-8-6 16397 Humboldt Shore of Big Lagoon 3 Comment
  HSC4650  Antennaria suffrutescens D. E. Anderson 1965-6-1 3771 Humboldt On ridge along Friday Hill Rd., about 2 mi. NE from its junction with Titlow Hill Rd. 1159 Comment
  UC582650  Antennaria suffrutescens Joseph P. Tracy 1933-7-11 12673 Humboldt Horse Mountain 1432 Comment
  BLMAR361  Anthemis cotula Jennifer Anthony-Wheeler 2003-5-21 361 Humboldt South Spit, Disturbed area on west side of road 9 Comment
  HSC8953  Anthoxanthum odoratum D. E. Anderson 1962-3-31 1957 Humboldt Coastal area of Prairie Creek State Park, back of sand dunes Comment
  UC922011  Anthoxanthum odoratum Joseph P. Tracy 1942-6-2 17101 Humboldt 2 mi n of Bridgeville 609 Comment
  JEPS83424  Antirrhinum vexillocalyculatum subsp. breweri David M. Thompson 1983-6-30 360 Humboldt vicinity Orleans (40 ft n of the s junction of Cedar Camp Road and Hwy 96, slide on w side of Hwy 96); , Orleans Quad. (15', 1952) 182 Comment
  RSA425833  Antirrhinum vexillocalyculatum subsp. breweri T. A. Bonser 1931-7-14 14970 Humboldt Garberville. Comment
  UC582471  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1935-10-13 14756 Humboldt Willow Creek; Trinity River Valley 152 Comment
  UC176867  Apocynum cannabinum Joseph P. Tracy 1912-7-26 3838 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC392165  Aquilegia formosa Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  UC161578  Aquilegia formosa Joseph P. Tracy 1911-6-4 3222 Humboldt 5 mi from coast (along Little River); Northern Coast Ranges 121 Comment
  HSC58087  Arabis divaricarpa var. interposita G. L. Clifton, Griswold 1979-8-1 11996 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC58192  Arabis glabra G. L. Clifton, Griswold 1979-8-2 12289 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC71084  Arabis glabra M. A. Baker 1980-5-23 1389 Humboldt Near Buck Mtn. 1524 Comment
  HSC73782  Arabis glabra Gail Newton 1980-6-28 701 Humboldt Near Mad River Butte. 1536 Comment
  HSC98619  Arabis glabra var. glabra Cara Witte 2007-5-31 154 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  RSA249429  Arabis sparsiflora var. subvillosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5595 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  RSA29328  Arbutus menziesii E. K. Balls, P. C. Everett, B. K. Balls 1953-10-11 18628 Humboldt 3 mi. n. of Garberville, Hwy 101. 152 Comment
  UCD117472  Arbutus menziesii Linda M. Barker 1976-4-30 1405 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  POM367168  Arbutus menziesii N. R. Zabriskie, Walter Zabriskie, J. Zabriskie 1968-8-22 151 Humboldt East of Honeydew on road from Humboldt State Park to Cape Mendocino. 915 Comment
  SEINET11972424  Arbutus menziesii J. P. Tracy 1951-1 19401 Humboldt near Ashfield Ridge, Kneeland Prairie 762 Comment
  HSC98821  Arceuthobium siskiyouense Cara Witte 2008-7-25 930 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36. After Forest Service gate. 1470 Comment
  UC1121508  Arctostaphylos A. E. Wieslander 1931-5-17 192 Humboldt Orick-Orleans Rd Hoopa Quadrangle, Bald Hills Comment
  UC314642  Arctostaphylos X media Joseph P. Tracy 1923-3-31 6171 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  SEINET11984830  Arctostaphylos canescens Unknown 1965-1 540 Humboldt on USAL Road, 23 mi N of junction with CA 1 & 2.7 mi S of junction of Four Corners Comment
  CAS-BOT-BC25213  Arctostaphylos canescens subsp. canescens L. B. Kildale 1928-4-29 5960 Humboldt Bald Mountain - at Lord-Ellis junction. Comment
  RSA15552  Arctostaphylos cinerea C. B. Wolf 1927-8-30 1240 Humboldt French's Ranch top of Wilder Ridge, between Honeydew and Ettersburg, near Upper Matole. Comment
  BLMAR648  Arctostaphylos columbiana Jennifer Wheeler 2011-5-27 648 Humboldt Lacks Creek, Pine Ridge Road, spur at Stormy Saddle 1097 Comment
  CAS-BOT-BC23743  Arctostaphylos columbiana C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny Comment
  CAS-BOT-BC23752  Arctostaphylos columbiana Joseph P. Tracy 1934-7-2 13293 Humboldt Vicinity of Trinidad 60 Comment
  CAS-BOT-BC23791  Arctostaphylos columbiana C. Hart Merriam 1921-8-16 s.n. Humboldt Near summit of Berry Mountain, between Willow Creek and Arcata. Comment
  HSC33254  Arctostaphylos columbiana Thomas W. Nelson 1975-3-20 1750 Humboldt Along Kneeland Rd. just S of its junction with Maple Creek Rd. Losey property. 671 Comment
  HSC7618  Arctostaphylos columbiana J. Pursell 1964-10-11 10114 Humboldt Big Lagoon Park, 1 mi. N of Big Lagoon school, approx. 200 yds. W of the road Comment
  RSA622688  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27676 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  UC585912  Arctostaphylos columbiana Joseph P. Tracy 1932-2-28 9772 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  RSA12449  Arctostaphylos columbiana var. columbiana C. B. Wolf 1934-6-30 5844 Humboldt 5 1/2 mi. from Shelter Cove on rd. to Briceland. 152 Comment
  RSA293169  Arctostaphylos columbiana var. columbiana Thomas W. Nelson, James Nelson, A. Nelson 1976-3-11 2267 Humboldt Beside old highway 101 along north side of Table Bluff. Comment
  SEINET11984904  Arctostaphylos columbiana var. tracyi Unknown 1965-1 541 Humboldt on USAL Rd, 23 mi N of junction with CA 1 & 2.7 mi S of junction of Four Corners Comment
  HSC99559  Arctostaphylos glandulosa subsp. glandulosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 224 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC101663  Arctostaphylos glandulosa var. cushingiana J. P. Smith, J. O. Sawyer 2011-4-23 13124 Humboldt Kings Peak Road near Shelter Cove. 523 Comment
  JEPS38949  Arctostaphylos hookeri subsp. montana Joseph P. Tracy 1934-3-11 13160 Humboldt French Camp Ridge 1066 Comment
  RSA633015  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27812 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 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
  HSC54510  Arctostaphylos nevadensis Overton, Butler 1979-7-23 9416 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC7657  Arctostaphylos nevadensis J. Pursell 1964-10-17 101714 Humboldt Road to Box Camp in Hoopa Valley 1372 Comment
  RSA46717  Arctostaphylos nevadensis Doris K. Kildale 1967-8-15 15335 Humboldt High Divide. Comment
  SBBG83936  Arctostaphylos nevadensis subsp. knightii R. Gankin, W. R. Hildreth 1967-10-26 1175 Humboldt French Camp Ridge, 21.4 mi E of US 101 on Bald Hills Rd from Orick Comment
  CAS-BOT-BC46629  Arctostaphylos patula L. B. Kildale 1930-8-3 10486 Humboldt Chaparral Mt. at Bug Creek. Comment
  HSC70990  Arctostaphylos patula Gail Newton 1980-7-15 1577 Humboldt Near Sims Mtn. 1311 Comment
  HSC74562  Arctostaphylos patula M. A. Baker 1980-5-17 1270 Humboldt Near Le Perron Peak 1066 Comment
  HSC98995  Arctostaphylos patula Cara Witte 2008-7-10 865 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile east of National Forest 1. Under powerlines. 1254 Comment
  CAS-BOT-BC43986  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17498 Humboldt Eureka 45 Comment
  CAS-BOT-BC43993  Arctostaphylos uva-ursi Robert F. Thorne; P. Everett 1965-8-5 35156 Humboldt Samoa Dunes 3 Comment
  RSA152314  Arctostaphylos uva-ursi Joseph P. Tracy s.n. Humboldt Eureka. 46 Comment
  UC180220  Arctostaphylos uva-ursi Joseph P. Tracy 1914-8-30 4594 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC70967  Arctostaphylos viscida R. York 1980-5-17 540 Humboldt Near Le Perron Peak 1066 Comment
  RSA636989  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-10-13 27788 Humboldt Bald Hills Road, eastern end of Redwood National Park, 223 km W of Hwy 96, N of Eureka. 600 Comment
  RSA245204  Armeria maritima subsp. californica Jerry Parker 1968-10-14 29 .1 Humboldt Mckinleyville Beach. Comment
  HSC99042  Arnica cernua Cara Witte 2008-6-4 681 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  UC1199250  Arnica discoidea Joseph P. Tracy 1919-5-31 5170 Humboldt near, at w side of Trinity River Willow Creek; Trinity River 182 Comment
  UC1103325  Arrhenatherum elatius Joseph P. Tracy 1927-9-25 8369 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC4743  Artemisia pycnocephala Jerry Parker 1968-11-22 247 Humboldt Mckinleyville Beach, Foot of Murray Rd. Comment
  RSA34238  Artemisia pycnocephala C. B. Wolf 1927-8-29 1206 Humboldt Devils' Gate, S of Cape Mendocino. Comment
  CAS-BOT-BC97245  Artemisia suksdorfii W. R. Dudley 1899-1 s.n. Humboldt Trinidad Head Comment
  HSC102075  Aruncus dioicus var. acuminatus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 977 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC154232  Aruncus dioicus var. pubescens Joseph P. Tracy 1909-6-13 2999 Humboldt near mouth of Warren Creek (hillside on Mad River); Northern Coast Region 0 Comment
  HSC24387  Asarum caudatum J. O. Sawyer 1970-6-24 2257 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC49144  Asarum caudatum J. O. Sawyer 1977-4-23 2840 Humboldt Dagsaw Spring on road to Onion Mtn. Comment
  POM318583  Asarum caudatum Patricia Wilder 1968-8-22 4421 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  HSC34795  Asarum caudatum John Palmer 1975-4-9 297 Humboldt 40 yds. E of intersection of 17th at Bayview St., Arcata Comment
  RSA261553  Asarum caudatum Suzanne May 1967-4-15 21 Humboldt On Kneeland Road, 5 miles east of Bridgeville 244 Comment
  HSC65862  Asarum hartwegii Gail Newton 1980-7-22 1698 Humboldt Near Devils Backbone 1545 Comment
  HSC40034  Asclepias cordifolia Thomas W. Nelson, Jane P. Nelson 1976-6-22 2881 Humboldt Just E of Goat Mtn. lookout. 1666 Comment
  RSA167427  Asclepias cordifolia Joseph P. Tracy 1950-7-15 19043 Humboldt Trinity River, E side, 1 mile N of mouth of Willow Creek. Comment
  HSC1052  Aspidotis densa P. W. Shields May 1955 Humboldt 4 mi. W of Hoopa Comment
  RSA12562  Aster alpigenus C. B. Wolf 1934-7-2 5877 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  RSA20814  Aster chilensis C. B. Wolf 1937-9-9 9312 Humboldt N Coast Range, Wildcat ridge, 6.3 miles S of Ferndale. 305 Comment
  RSA93746  Aster radulinus F. W. Peirson 1923-7-10 3881 Humboldt Garberville. Comment
  HSC95164  Astragalus agnicidus Gordon Leppig 2003-7-10 2002 Humboldt Pacific Lumber Co. land 730 Comment
  UC1565647  Astragalus agnicidus Ken Berg and Roxanne Bittman 1987-9-23 Humboldt off Bear Butte Rd. about 2 mi sw of jct with Maple Hills Rd sw Mirando; sw of Mirando Comment
  CAS-BOT-BC193131  Astragalus rattanii var. rattanii Volney Rattan s.n. Humboldt Bug Creek Comment
  CHSC98380  Astragalus umbraticus Dean Wm. Taylor 2006-8-2 19569 Humboldt Showers Mountain; on north flank of the mountain, south rim of the Mad River canyon. 1051 Comment
  HSC103507  Astragalus umbraticus Thomas W. Nelson, Jane Nelson 1987-6-11 8526 Humboldt Along Forest Service Rd. 13N01, 9 mi. from junction with State Route 96 762 Comment
  UC1755322  Astragalus umbraticus Dean W. Taylor 2006-8-2 19569 Humboldt Showers Mountain; on north flank of the mountain, south rim of the Mad River canyon 1051 Comment
  UCR37845  Astragalus umbraticus D. E. Anderson 1965-5-15 3694 Humboldt About 7 mi north of Hoopa on Bloody Camp Prairie Road. Comment
  HSC57044  Asyneuma prenanthoides Overton, Butler 1979-7-24 9693 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC75271  Asyneuma prenanthoides J. O. Sawyer, D. A. Thornburgh 1980-9-9 4085 Humboldt Mill Creek Lake and surrounding meadows Comment
  OBI5364  Athyrium filix-femina Robert J. Rodin 1969-8-16 8367 Humboldt Near Carlotta in forest where second growth redwoods had just been cut, near Van Duzen River. Comment
  RSA246930  Athyrium filix-femina subsp. cyclosorum R. F. Thorne, Percy C. Everett 1965-8-9 35292 Humboldt Big Lagoon 3 Comment
  HSC10343  Athyrium filix-femina var. cyclosorum H. S. Logsdon 1964-5-10 3 Humboldt 4 mi. NE of Orick at Boye's Prairie Comment
  UC1152029  Avena fatua A. H. Murphy 1951-4-2 8 Humboldt Hwy 101 1/4 mi s Phillipsville (side of road) Comment
  HSC37666  Baccharis douglasii R. Sutherland 1976-8-19 14 .19876 Humboldt 236 Comment
  HSC37823  Baccharis pilularis subsp. consanguinea Thomas W. Nelson, Jane P. Nelson 1976-2-21 2252 Humboldt Tish-Tang campground Comment
  HSC35033  Balsamorhiza deltoidea Thomas W. Nelson, James Nelson 1975-5-24 1850 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC492247  Barbarea orthoceras Joseph P. Tracy 1927-7-24 8292 Humboldt Mattole Valley 152 Comment
  UC127824  Bellis perennis Harley P. Chandler May 1901 1128 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC48155  Bensoniella oregona Joseph P. Tracy 1939-7-9 16327 Humboldt Snow Camp in moist ground around meadow. 1402 Comment
  CAS-BOT-BC48159  Bensoniella oregona R. Bacigalupi; L. Constance; Reid Moran; R. L. Rodriguez; Joe Tracy; Sherwin Carlquist 1951-6-14 3410 Humboldt Bald Mountain ridge - in bog, edge of forest at High Prairie, on long high ridge between Mad River and Redwood Creek 1066 Comment
  JEPS3738  Bensoniella oregona Rimo Bacigalupi and L. Constance with R. Moran, R. L. Rodriguez and Sherwin Carlquist 1951-6-14 3416 Humboldt close to the base Snow Camp Mt. (at Snow Camp, near summit of long high ridge (Bald Mt. ridge) between Mad River and Redwood Creek); nr summit Bald Mt. Snow Camp Mt, btw Mad River and Redwood C 1432 Comment
  UC1051579  Bensoniella oregona Joseph P. Tracy 1923-6-24 6363 Humboldt Bald Mountain in meadow near High Prairie; Northern Coast Ranges, Bald Mountain, nr High Prairie 1066 Comment
  UC1198388  Berberis aquifolium Joseph P. Tracy 1924-4-27 6641 Humboldt along hwy near Ruby Creek Willow Creek 609 Comment
  HSC76285  Berberis aquifolium var. aquifolium Denis Kearns 1981-6-24 7 Humboldt Near Cedar Camp 1219 Comment
  UCD39982  Berberis aquifolium var. repens Rodney Gale Myatt 1971-9-21 1186 Humboldt Near Orleans, northeast of Hoopa Reservation, and along Klamath River. 426 Comment
  JEPS47776  Berberis nervosa Milo S. Baker 1923-7-31 187 Humboldt Lawrence Creek Comment
  BLMAR413  Bidens cernua Clara Sander 2007-8-22 413 Humboldt South Spit, east side of road near "lone tree" 9 Comment
  HSC45419  Bistorta bistortoides Thomas W. Nelson, Jane P. Nelson 1977-7-4 3595 Humboldt Margin of pond above Alder Springs 1585 Comment
  RSA1505  Blechnum spicant E. R. Johnson 1929-08 1408 Humboldt Arcata Redwood Park Comment
  SBBG25588  Blechnum spicant E. R. Blakley 1966-8-17 6792 Humboldt Little Crk, Prairie Crk St Park, ca. 10 mi N of Orick 64 Comment
  JEPS53080  Boechera Joseph P. Tracy 1917-9-2 4838 Humboldt Grouse Mt. Northern Coast Ranges 1524 Comment
  UC936236  Boechera divaricarpa Harold E. Parks and Joseph P. Tracy 1949-6-25 11678 Humboldt Box Camp Trinity Summit 1463 Comment
  UCD114455  Boechera platysperma Joseph P. Tracy 1932-7-12 10458 Humboldt Klamath Mountains, Trinity Summit. Rocky exposed places, head of Brett Hole. 1828 Comment
  JEPS109416  Boechera subpinnatifida D. W. Taylor 2004-6-24 19131 Humboldt Horse Mountain, along Titlow Hill Road, 0.4 miles N from junction with the road to the mountain summit. Comment
  BLMAR411  Bolboschoenus maritimus Jennifer Wheeler 2007-8-22 411 Humboldt South Spit Comment
  HSC41347  Boschniakia strobilacea Brad Klipfel 1974-8-2 501 Humboldt Horse Mtn. Comment
  HSC48731  Boschniakia strobilacea J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 521 Humboldt Off Forest Rd. 10N05, SE slope of Hopkins Butte 1037 Comment
  HSC96467  Boykinia occidentalis Gordon Leppig 1997-6-19 464 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC207730  Boykinia occidentalis Joseph P. Tracy 1918-7-5 5002 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  CAS-BOT-BC420264  Boykinia occidentalis L. B. Kildale 1930-6-1 9746 Humboldt Klamath River at Weitchpec 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
  UC725902  Boykinia occidentalis A. A. Heller 1937-6-11 15893 Humboldt along U.S. Highway #101 between Bishop Pine Lodge and Big Lagoon; between Bishop Pine Lodge and Big Lagoon Comment
  HSC6581  Brassica rapa Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  JEPS18754  Brickellia greenei Joseph P. Tracy 1935-7-30 14361 Humboldt Salmon Summit 1767 Comment
  HSC28147  Briza minor Chris Gist 1971-6-23 23 Humboldt Gravel driveway between G St. and H St., Arcata Comment
  HSC9093  Briza minor R. Spellenberg 1965-6-13 1108 Humboldt Along highway, 2 mi. S of Hoopa Comment
  HSC56466  Brodiaea elegans subsp. elegans Griswold, Butler 1979-7-12 7273 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC72623  Brodiaea elegans subsp. elegans J. P. Smith 1977-7-3 9230 Humboldt On Forest Service Road 13N01 to Fish Lake, 3.5 mi. from its junction with Highway 36 488 Comment
  UC303037  Brodiaea elegans subsp. elegans Joseph P. Tracy 1926-6-27 7695 Humboldt Horse Mt. Pass on Trinity Highway North Coast Ranges, Horse Mountain (grassy slopes) 883 Comment
  HSC35968  Brodiaea stellaris Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-21 1952 Humboldt Hwy. 36, 5 mi. E of Bridgeville Comment
  BLMAR554  Brodiaea terrestris Jennifer Wheeler 2004-5-20 554 Humboldt Stornetta Ranch Comment
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Apr 21 2014
  BLMAR191  Brodiaea terrestris subsp. terrestris Donald Hazlett 1994-6-7 191 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UC1145185  Bromus carinatus var. carinatus Joseph P. Tracy 1936-6-17 149246 Humboldt Buck Mountain 792 Comment
  UC37601  Bromus carinatus var. carinatus J. Burtt Davy 1899-6-27 5879 Humboldt range near summit of Bald Hill (above Hupa Valley) Comment
  UC526848  Bromus carinatus var. carinatus H. E. Parks and Joseph P. Tracy 1934-7-6 11142 Humboldt Northern Coast Ranges, Iaqua Iaqua; Northern Coast Ranges, Iaqua 762 Comment
  UC249868  Bromus commutatus Joseph P. Tracy 1922-6-18 6091 Humboldt Northern Coast Ranges, Iaqua Iaqua; Northern Coast Ranges, Iaqua 609 Comment
  JEPS72928  Bromus diandrus Lincoln Constance 1934-5-26 674 Humboldt Bull Creek Region, South Fork Eel River, s end of Dyerville Bridge Dyerville Bridge; Bull Creek Region, South Fork Eel River, Dyerville Bridge 45 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
  RSA152297  Bromus marginatus Joseph P. Tracy 1950-6-15 18786 Humboldt Mail Ridge. North of Harris 7 miles. 1037 Comment
  UCD59595  Bromus rubens A. H. Murphy 1951-5-21 s.n. Humboldt Tooby and Prior Ranch, Blocksburg Experimental grazing pasture. Comment
  RSA126835  Bromus sterilis H. S. Yates 1936-5-17 5714 Humboldt Near Burr valley; South Fork Pk. 915 Comment
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Apr 6 2017
  UC526932  Bromus sterilis Joseph P. Tracy 1933-6-13 12601 Humboldt Bair's Ranch on Redwood Creek Redwood Creek; North Coast Ranges, , Bair's Ranch 914 Comment
  CDA1852  Bromus vulgaris E. C. Whitney 1976-6-1 Humboldt Redcrest. 0 Comment
  HSC9377  Bromus vulgaris J. P. Tracy 1926-6-13 7601 Humboldt Near Blue Lake Comment
  UCR93380  Buddleja davidii Kathy Harper, Dane Karr 1994-6-14 s.n. Humboldt North Coast Range, 11-12 mi. north of Willow Creek on State Hwy 96, c. 0.25 mi. north of 'vista point' along Trinity River 30 Comment
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Apr 27 2007
  CHSC32805  Cakile maritima Lora L. Anderson 1981-4-25 2 Humboldt Ca. 500 yds e of ocean, 0.5 mi w of hwy 101, 11.5 mi nw of Arcata, beach. 0 Comment
  HSC103983  Cakile maritima E. R. Fyer 2015-4-26 23 Humboldt Along New Navy Base Road 9 Comment
  HSC31340  Cakile maritima Larry E. DeBuhr, G. Wallace 1972-5-22 608 Humboldt Prairie Creek Redwoods State Park Comment
  SD112830  Calamagrostis canadensis D. F. Howe 1961-8-1 3103 Humboldt 6 miles north of Trinidad on Highway 101 Comment
  UCD57218  Calamagrostis canadensis William Anderson 1965-6-27 s.n. Humboldt Trinidad. Comment
  UC1146639  Calamagrostis foliosa Freed W. Hoffman 1946-5-19 1728 Humboldt Mattole River Comment
  UCD56952  Calamagrostis foliosa A. H. Murphy 1951-5-18 38 Humboldt approx. 1.5 mi. south of Petrolia at bridge corssing, along Mattole River. Comment
  CAS-BOT-BC185178  Calamagrostis nutkaensis Ira L. Wiggins 1932-7-25 5898 Humboldt Roadsides near McKenleyville. Comment
  UC1922744  Callitriche heterophylla subsp. bolanderi Robert F. Thorne, P. Everett 1965-8-9 35345 Humboldt Along Hwy. 101 about 3 mi. N or Eureka. Comment
  CAS-BOT-BC80391  Calocedrus decurrens Doris K. Kildale 1928-10-7 6750 Humboldt Trinity River at Willow Creek Flat Comment
  CAS-BOT-BC496522  Calochortus tolmiei R. K. Gierisch; D. H. Esplin 1969-7-1 3530 Humboldt Six Rivers Forest. Grouse Mtn. 1584 Comment
  UC1222580  Caltha biflora Joseph P. Tracy 1951-6-14 19408 Humboldt Snow Camp. 1402 Comment
  HSC36647  Calypso bulbosa J. D. Ackerman 1975-6-4 443 Humboldt 5 mi. E of hwy. 101, on Bald Hills Rd. Redwood Natl. Park 396 Comment
  HSC48948  Calypso bulbosa M. A. Baker 1979-5-17 732 Humboldt On FS 1 along Wilson Creek, just E of FS 15N01 Comment
  HSC59490  Calypso bulbosa M. A. Ericksen 1979-4-28 219 Humboldt Roadside leading to Camp Bouer, Korbel. Comment
  HSC65202  Calypso bulbosa T. Jimerson, J. Pageau 1979-5-1 446 Humboldt On FS 6N34C, Orleans Ranger District, Orleans Comment
  HSC95802  Calypso bulbosa Kevin Thomas 2004-4-26 15 Humboldt Titlow Hill Rd. Comment
  UC1196473  Calypso bulbosa Mabel Griffin 1927-4-23 Humboldt Dows Prairie, at top of North Hill Dows Prairie; , North Hill 60 Comment
  SEINET200998  Calystegia J. P Tracy 1917-5-30 4803 Humboldt Near Little River Comment
  HSC48792  Calystegia occidentalis subsp. occidentalis Brad Klipfel 1975-6-17 660 Humboldt 2 mi. E of Titlow Hill Rd. along Hwy. 299 Comment
  UC562491  Calystegia purpurata Joseph P. Tracy 1927-7-24 8298 Humboldt Upper Mattole 152 Comment
  CDA20594  Calystegia silvatica subsp. disjuncta P. Haggard 2005-9-15 PDR 1368655 Humboldt North Coast; Along banks of Mad River, Arcata. 0 Comment
  HSC49802  Calystegia soldanella R. York 1979-5-18 295 Humboldt Stabilized dunes opposite the Louisiana Pacific mill in Samoa Comment
  HSC6361  Calystegia soldanella Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  RSA21032  Calystegia soldanella C. B. Wolf 1937-6-18 8902 Humboldt Centerville Beach. 3 Comment
  RSA296783  Calystegia soldanella Clark L. Miller 1979-5-24 1 -149 Humboldt Sandy Dunes off Somoa Blvd. approx. a half mile from Coast Guard Station Gate. Comment
  UC1197873  Calystegia soldanella J. P. Tracy 1900-7-4 882 Humboldt sand hills of Ocean Beach at Samoa (opp. Eureka); Ocean Beach at Samoa, opp. Eureka Comment
  HSC90315  Calystegia soldanella Jean Hanson 1980-5-24 79 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island, 25 ft. from high tide line Comment
  UC1196941  Camissonia contorta Joseph P. Tracy 1901-4-14 1028 Humboldt Samoa Northern Coast Region, Humboldt Bay Comment
  SEINET10462973  Campanula prenanthoides Overton 1979-7-24 OVERTON 9693 Humboldt Near Friday Camp, on the Willow Creek quad., close to the town of Willow Creek 1250 Comment
  UC602536  Campanula prenanthoides Joseph P. Tracy 1927-8-14 8330 Humboldt Big Lagoon 121 Comment
  SEINET10462965  Campanula prenanthoides Aven Nelson, Ruth A. Nelson 1977-7-1 Nelson 3562 Humboldt Along north slope of ridge between Bear & Blanket Creeks. T1S R5E SEC.25 1494 Comment
  SEINET10972391  Campanula prenanthoides Pollard 1948-8-4 POLLARD s.n. Humboldt Orleans Mountain Trail 1219 Comment
  UC1021825  Campanula prenanthoides J. M. Tucker 1948-9-3 1859 Humboldt road bank on Friday Ridge Road just below Black Rock ((junction of Friday Ridge Road and the Horse Mountain-Grouse Mountain Road)) Comment
  SEINET10463747  Campanula scouleri Overton 1979-7-23 OVERTON 9497 Humboldt Near Titlow Hill, on the Willow Creek quadrangle, close to the town of Willow Creek 1280 Comment
  SEINET10463751  Campanula scouleri James P. Smith 1977-7-3 Smith, Jr. 9250 Humboldt Six Rivers National Forest: along the road to Onion Lake, just above Blue Lake. T10N R4E Sec. 15 975 Comment
  UC602560  Campanula scouleri Joseph P. Tracy 1937-7-25 15560 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC1199214  Capsella bursa-pastoris Joseph P. Tracy 1935-4-20 13790 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  HSC6618  Capsella bursa-pastoris David K. Smith 1968-2-3 3 Humboldt Crannell Rd. past the bridge Comment
  UC302119  Cardamine angulata Joseph P. Tracy 1926-5-22 7510 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  JEPS53314  Cardamine breweri Joseph P. Tracy 1918-4-28 4891 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  UC275268  Cardamine breweri Joseph P. Tracy 1923-6-24 6364 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, , nr High Prairie 1066 Comment
  UC1199182  Cardamine californica Joseph P. Tracy 1935-3-10 13732 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on Van Duzen River) 91 Comment
  UC1199190  Cardamine californica Joseph P. Tracy 1913-3-30 4031 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC1199184  Cardamine californica var. sinuata Joseph P. Tracy 1939-3-19 16206 Humboldt 5 mi e Carlotta (by old Strong's District School House); e of Carlotta, by old Strong's District School House 45 Comment
  JEPS53297  Cardamine oligosperma Lincoln Constance 1934-5-31 745 Humboldt from w boundary Park to Grasshopper Peak Road (Squaw Peak Road) (n side creek, Bull Creek flat, along Bull Creek, Bull Creek Region, South Fork Eel River); Bull Creek Region, South Fork Eel River, Bull Cr Comment
  UC1199203  Cardamine oligosperma Joseph P. Tracy 1918-5-1 4898 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC37891  Cardamine oligosperma Doris K. Kildale 1927-3-20 2916 Humboldt Philipsville. Smith Fork of Eel River. Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  HSC6643  Cardamine oligosperma J. W. Johnson 1962-4-8 1219 Humboldt Arcata, Mad River Co. Park Comment
  HSC100460  Cardamine paucisecta Carl C. Marshall Mar 1886 154 Humboldt Everywhere. Comment
  HSC6853  Cardaria draba J. P. Tracy 1933-5-19 12201 Humboldt Eel River, Alton to Fortuna 15 Comment
  UCD150616  Cardionema ramosissimum Joseph P. Tracy 1947-7-3 17765 Humboldt at mouth of Little River. 6 Comment
  CHSC107135  Carex abrupta R. E. Brainerd 2009-7-23 1568 Humboldt North Coast Range, South Fork Mountain; 19.6 miles west-northwest of Hayfork. UTM Zone 10 453477E 4494945N. 1661 Comment
  CHSC98385  Carex arcta Dean Wm. Taylor; Tom Engstrom 2006-8-3 19573 Humboldt Lake Prairie; marshy area between the dam and the county road. 1057 Comment
  CAS-BOT-BC19091  Carex aurea Joseph Prince Tracy; H. E. Parks 1931-5-9 9401 Humboldt Northern Coast Region. Vicinity of Trinidad. At Bishop Pine Lodge. 60 Comment
  POM273208  Carex barbarae Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  CAS-BOT-BC19437  Carex bolanderi Robert F. Thorne; P. Everett 1965-8-5 35128 Humboldt Wailaki Recreation Site. 518 Comment
  HSC74641  Carex bolanderi M. A. Baker 1980-5-18 1359 Humboldt Near Black Mtn. 792 Comment
  HSC75763  Carex bolanderi Denis Kearns 1981-7-23 405 Humboldt Near Whiteys Peak. 1524 Comment
  CHSC90273  Carex brainerdii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8588 Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  CHSC23306  Carex buxbaumii Robert F. Thorne; P. Everett 1965-8-9 35293 Humboldt Big Lagoon. 3 Comment
  RSA246847  Carex buxbaumii Robert F. Thorne, Percy C. Everett 1965-8-9 35293 Humboldt Big Lagoon. 3 Comment
  BLMAR357  Carex cusickii Jennifer Anthony-Wheeler 2003-7-23 357 Humboldt Headwaters Forest Reserve, growing in natural pond with large floating rafts of logs 426 Comment
  CAS-BOT-BC34982  Carex densa Joseph Prince Tracy 1938-6-9 15877 Humboldt Dobbyn Creek. 152 Comment
  HSC34955  Carex densa Thomas W. Nelson 1975-5-24 1866 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC562259  Carex densa Joseph P. Tracy 1928-6-17 8453 Humboldt Trinity River Valley, at Willow Creek Northern Coast Ranges 152 Comment
  UC1103109  Carex deweyana subsp. leptopoda Joseph P. Tracy 1936-6-21 14992 Humboldt Iaqua North Coast Ranges 609 Comment
  HSC74421  Carex echinata subsp. echinata Gail Newton 1980-8-10 2044 Humboldt Near Blake Mtn. 1707 Comment
  UC1103127  Carex echinata subsp. echinata Joseph P. Tracy 1923-6-24 6372 Humboldt in cold wet meadow near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC19967  Carex exsiccata Joseph Prince Tracy 1934-7-13 13388 Humboldt Dow's Prairie. 60 Comment
  POM224512  Carex exsiccata H. C. Cantelow 1936-5-18 s.n. Humboldt 8 miles NE of Orick. Comment
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Jan 20 2011
  UC1152062  Carex feta Joseph P. Tracy 1950-8-7 19267 Humboldt meadow at Box Camp Trinity Summit 1463 Comment
  UC1152081  Carex fracta Joseph P. Tracy 1950-7-2 18963 Humboldt 6 mi NE of Hawkins Bar (Fern Spring, Happy Camp Mountain); Trinity Summit Range 1280 Comment
  CAS-BOT-BC20873  Carex globosa Joseph Prince Tracy 1929-6-3 8605 Humboldt North Coast Ranges. Willow Creek Canyon. Mouth of East Fork. 487 Comment
  POM160289  Carex globosa Joseph P. Tracy 1925-6-7 7064 Humboldt East Fork of Willow Creek, Willow Creek Canyon. 457 Comment
  UC1116268  Carex gynodynama Joseph P. Tracy 1942-6-15 17127 Humboldt Englewood, Natural Prairie, near Redcrest Resort. Comment
  CAS-BOT-BC146591  Carex gynodynama H. D. Ripley; R. C. Barneby 1945-6-16 6812 Humboldt 2.5 miles N. of Miranda Comment
  CAS-BOT-BC22317  Carex harfordii Joseph Prince Tracy 1935-6-8 13938 Humboldt Eureka. 60 Comment
  SEINET11631285  Carex hendersonii Unknown 1936-1 13479 Humboldt near Scotia Comment
  UC1152061  Carex hendersonii Joseph P. Tracy 1948-6-13 18042 Humboldt halfway between Bridgeville and Blocksburg; Larrabee Creek Comment
  UC519695  Carex hendersonii Victor Duran 1933-5-12 3412 Humboldt Bull Creek South Fork of the Eel River Comment
  CAS-BOT-BC35563  Carex jonesii Joseph Prince Tracy 1935-7-26 14257 Humboldt Trinity Summit, Meadows at Water Dog Lakes 1828 Comment
  UCR52391  Carex laeviculmis L. P. Janeway 1983-5-15 296 Humboldt North Coast, Riparian bend of Mad River on south side, near the Fish Hatchery Road & across from Blue Lake 24 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
  UC203892  Carex leptalea Joseph P. Tracy 1918-7-21 5086 Humboldt Northern Coast Ranges, around Humboldt Bay, Humboldt Hill Humboldt Hill; Northern Coast Ranges, Humboldt Bay, Humboldt Hill 91 Comment
  CAS-BOT-BC31465  Carex leptopoda Joseph Prince Tracy 1936-6-9 14902 Humboldt Mattole Valley, 4 mi SE of Petrolia. 60 Comment
  CAS-BOT-BC31469  Carex leptopoda Charles Vancouver Piper 1921-5-22 s.n. Humboldt Eureka Comment
  HSC103595  Carex luzulina Thomas W. Nelson, Jane Nelson 1987-6-11 8603 Humboldt Box Spring at Box Camp; along trail to North Trinity Mountain. 1524 Comment
  JEPS79958  Carex mariposana Joseph P. Tracy 1936-6-17 14954 Humboldt lower foothills of nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  RSA0014502  Carex mendocinensis Joseph P. Tracy 1924-6-15 6697 Humboldt Near Ruby Creek, on the Willow Creek Highway. 610 Comment
  UC709391  Carex multicaulis Joseph P. Tracy 1941-4-11 16857 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC75764  Carex multicostata Teresa Prendusi 1981-7-21 289 Humboldt Near Whiteys Peak 1646 Comment
  CHSC40169  Carex nudata L. P. Janeway 1984-5-13 777 Humboldt Along the North Fork Yager Creek 18 miles east of the Kneeland P.O. on the Kneeland/Bridgeville Road. 381 Comment
  CAS-BOT-BC119539  Carex nudata W. R. Dudley 1899-6-21 s.n. Humboldt Bluffs below forks of Eel River. Comment
  CAS-BOT-BC119541  Carex nudata Henry M. Pollard 1948-7-17 s.n. Humboldt Rocks bordering Klamath River near Orleans. Comment
  SEINET10850491  Carex nudata Harley P. Chandler Chandler 1235 Humboldt Redwood Belt. Comment
  RSA702711  Carex obnupta L. P. Janeway, B. Castro 2004-9-10 8319 Humboldt North Coast. South Spit of Humboldt Bay, 3.6 km north-northeast of Table Bluff Lighthouse site; between South Spit Road and the Humboldt Bay mudflats. 2 Comment
  CDA33125  Carex obnupta T. C. Fuller 1961-9-28 7055 Humboldt 1.5 miles south of Samoa. 0 Comment
  JEPS80017  Carex obnupta Joseph P. Tracy 1912-6-16 3702 Humboldt adjacent to salt marsh, Hookton Northern Coast Region, Humboldt Bay, Hookton 0 Comment
  CAS-BOT-BC119238  Carex pachystachya Joseph Prince Tracy 1939-7-9 16316 Humboldt Bald Mt. In ditch one mile N of Murphy Meadows. 914 Comment
  SEINET10949620  Carex pachystachya Joseph P. Tracy 1935-6-8 Tracy 13936 Humboldt Eureka. In woods. Comment
  CAS-BOT-BC118005  Carex rossii Joseph Prince Tracy 1949-5-8 18295 Humboldt Carlotta. Open flat by old Strong's District School House, 5 mi E of town. 60 Comment
  UC213329  Carex scopulorum var. bracteosa Joseph P. Tracy 1919-9-25 5298 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  HSC102533  Carex spectabilis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1519 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  CAS-BOT-BC116681  Carex subfusca Joseph Prince Tracy 1936-6-17 14954 Humboldt Buck Mountain, lower foothills of its NW slope. 762 Comment
  UC585640  Carex tumulicola Joseph P. Tracy 1937-6-20 15338 Humboldt 10 mi up stream from mouth Bear River 152 Comment
  CAS-BOT-BC115065  Carex vesicaria Joseph Prince Tracy 1934-7-18 13428 Humboldt In shallow pond, Grouse Mountain. 1524 Comment
  HSC76379  Carex viridula L. P. Janeway 1982-8-7 116 Humboldt Dry Lagoon, middle of lagoon 3 Comment
  CDA6950  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke s Prairie, on ridge 1 mile north above Bull Creek, ca. 2 miles west of Dyerville. 0 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
  JEPS35843  Castilleja affinis subsp. litoralis Rimo Bacigalupi, and L. R. Heckard 8989 Humboldt just n Table Bluff lighthouse (s end of Humboldt Bay); Humboldt Bay Comment
  JEPS93139  Castilleja affinis subsp. litoralis M. Wetherwax 1992-5-20 2435 Humboldt n side Wedding Rock (Patrick's Point State Park); Patrick's Point State Park 30 Comment
  JEPS26389  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1900-7-4 867 Humboldt Samoa North Coast Region, Humboldt Bay Region 0 Comment
  OBI9388  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1938-7-15 16068 Humboldt Mouth of Eel River 3 Comment
  JEPS8625  Castilleja applegatei subsp. pinetorum Joseph P. Tracy 1935-7-24 14203 Humboldt near Trinity Summit Ranger Station; Trinity Summit 1828 Comment
  UC1222834  Castilleja arachnoidea Joseph P. Tracy 1950-8-8 19296 Humboldt Croghan Hole Trinity Summit (on Trinity Summit) 1676 Comment
  HSC78967  Castilleja attenuata L. P. Janeway 1984-5-16 790 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd., 0.25 mi. N of the boat ramp 3 Comment
  UC673218  Castilleja attenuata Lincoln Constance and Reed C. Rollins 1942-5-12 2891 Humboldt 1 mi s Orleans (Klamath River); Klamath-Siskiyou Region, Klamath River 121 Comment
  HSC45387  Castilleja densiflora R. York 1978-5-20 169 Humboldt Along Bluff Creek Trail 610 Comment
  UCD122467  Castilleja exserta subsp. latifolia Linda M. Barker 1976-6-1 1545 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA15566  Castilleja litoralis Carl B. Wolf 1927-8-29 1195 Humboldt 7 miles south of Ferndale and Capetown, Bear River Ridge, Mt. Glen. Comment
  CAS-BOT-BC244878  Castilleja miniata Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC41275  Castilleja pruinosa Brad Klipfel 1974-6-25 427 Humboldt Horse Mtn. Comment
  JEPS25092  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1938-6-17 15952 Humboldt Cape Mendocino 152 Comment
  UC1502114  Ceanothus R. Sutherland 1976-5-11 7 .11.76 Humboldt just outside Sec 32 Pt. Delgado Quad.; Pt. Delgada Quad. 609 Comment
  CAS-BOT-BC83837  Ceanothus arcuatus Dylan O. Burge 2009-5-12 1155 b Humboldt Horse Mountain, at intersection of FR 6N36 and Titlow Road 360 Comment
  CAS-BOT-BC49317  Ceanothus cuneatus Doris K. Kildale 1926-8-15 2538 Humboldt Hoopa Mountain near Old Mill 579 Comment
  UC1502134  Ceanothus foliosus R. Sutherland 1975-5-28 10 Humboldt near Tolken Camp Pt. Delgada quad. 502 Comment
  UC1222620  Ceanothus incanus Joseph P. Tracy 1950-8-4 19249 Humboldt Grasshopper Peak Bull Creek State Park at head of Canoe Creek Comment
  CHSC31293  Ceanothus integerrimus Mark Stopher 1980-6-4 107 Humboldt Near Elk River near Hwy 101 bridge. 1 Comment
  HSC18292  Ceanothus integerrimus Francis Winter 1960-5-7 Humboldt 1.0 mi. E of Hoopa along Hoopa-Willow Creek Hwy. 152 Comment
  HSC32265  Ceanothus integerrimus J. O. Sawyer 1970-6-24 2234 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  RSA46465  Ceanothus integerrimus var. californicus Doris K. Kildale 1927-5-15 3301 Humboldt Petrolia Comment
  CAS-BOT-BC51144  Ceanothus lemmonii D. Haskamp; E. Sonnenblick; M. Taft 1995-4-23 38 Humboldt On rd. A16 NE of Basin Gulch campground 11 miles. On west side of road 731 Comment
  RSA95358  Ceanothus lemmonii Joseph P. Tracy 1929-4-28 8551 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  RSA136480  Ceanothus oliganthus var. sorediatus Joseph P. Tracy 1918-5-1 4902 Humboldt Kneeland Prairie. 762 Comment
  HSC37086  Ceanothus parryi R. Sutherland 1975-5-20 4 .20575 Humboldt 122 Comment
  JEPS42121  Ceanothus parryi E. Fritz Apr. 1934 Humboldt Philipsville Comment
  CAS-BOT-BC51208  Ceanothus parryi W. R. Dudley 1899-6-1 s.n. Humboldt Near grade descending from the hills to Eel River Comment
  CAS-BOT-BC52045  Ceanothus prostratus Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC23274  Ceanothus pumilus D. E. Anderson, J. P. Smith 1971-7-6 - 1291 Humboldt Horse Mtn. 10 mi W of Willow Creek 1524 Comment
  SEINET12211458  Ceanothus pumilus Unknown 1986-1 60171 Humboldt At the Trinity Co. line: The Lassics, betw. Red Lassic and Lassic peaks 1768 Comment
  UCD162862  Ceanothus pumilus J. Bisbee 2014-3-27 828 Humboldt Thomas Rd, 8 miles of south Miranda. 313 Comment
  HSC18341  Ceanothus thyrsiflorus Francis Winter 1960-4-23 Humboldt 1.0 mi S of Dollar Ranch Korbel-Maple Creek Rd. 152 Comment
  UC166485  Ceanothus thyrsiflorus Joseph P. Tracy 1909-8-22 3077 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  UC668160  Ceanothus thyrsiflorus Joseph P. Tracy 1935-6-2 13924 Humboldt Big Lagoon 60 Comment
  UCD112719  Ceanothus thyrsiflorus H. P. Olmo 1934-6-8 s.n. Humboldt 5 mi. north of Trinidad. Comment
  HSC18343  Ceanothus velutinus P. W. Shields May 1955 Humboldt 7 mi W of Hoopa Comment
  HSC18344  Ceanothus velutinus C. B. Wolf 1927-8-30 1242 Humboldt 5-6 mi. N of Ettersburg, Paradise Comment
  HSC97570  Ceanothus velutinus Cara Witte 2007-6-5 215 Humboldt Along Forest Service Road 4N32. Near Grouse Mountain 1486 Comment
  SBBG71412  Ceanothus velutinus H. E. McMinn 1931-6-27 2539 Humboldt up to summit from jct of Trinity and Klamath Rivers Comment
  HSC99446  Ceanothus velutinus var. velutinus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 96 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  JEPS46936  Centaurium muehlenbergii W. L. Jepson 1927-7-3 12361 Humboldt Meyers road sta South Fork Eel River Comment
  UC176992  Centaurium muehlenbergii Joseph P. Tracy 1912-7-23 3798 Humboldt 3 mi above mouth of South Fork of Eel River (along South Fork of Eel River); Northern Coast Ranges, South Fork of Eel River 30 Comment
  UC718024  Centaurium muehlenbergii Carl B. Wolf 1934-6-30 Humboldt 0.5 mi from Briceland (on road to Garberville) 91 Comment
  JEPS43074  Centunculus minimus H. P. Chandler May 1901 1180 Humboldt Humboldt Bay Comment
  UC154023  Centunculus minimus J. P. Tracy 1903-8-9 1943 Humboldt immediate vicinity of Eureka 0 Comment
  HSC99829  Cephalanthera austiniae T. Jimerson, J. Pageau 1979-7-31 708 Humboldt Near Whiting Ridge. Close to town of Hyampom 1204 Comment
  HSC63884  Cephalanthera austiniae M. A. Baker 1979-6-27 919 Humboldt Comment
  UC1198320  Cerastium glomeratum Joseph P. Tracy 1911-7-5 3308 Humboldt near mouth Willow Creek; Northern Coast Ranges, Willow Creek (tributary of Trinity R. 182 Comment
  POM161038  Chamaecyparis lawsoniana Joseph P. Tracy 1926-6-27 7672 Humboldt Horse Mountain 1463 Comment
  SEINET11739818  Chamaecyparis lawsoniana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -302 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  JEPS52363  Chamaesyce serpyllifolia Joseph P. Tracy 1928-9-16 6555 Humboldt near the South Fork; Northern Coast Ranges, Trinity River Valley Comment
  HSC23490  Chamerion angustifolium subsp. circumvagum R. A. Vanbianchi 1971-9-10 82 Humboldt Along Fieldbrook Rd., 1/2 mi. from Jct. with old Hwy. 299 Comment
  CAS-BOT-BC68261  Cheilanthes gracillima Doris K. Kildale 1926-9-5 2649 Humboldt Lasseck's Peaks - Signal Peak 1791 Comment
  UC503076  Cheilanthes gracillima Joseph P. Tracy 1927-6-12 8166 Humboldt Horse Mt; Northern Coast Ranges 1066 Comment
  UC582918  Chenopodium botrys P. A. Munz 1936-8-9 14334 Humboldt Williams Redwood Grove South Fork of Eel River Comment
  UC154192  Chimaphila menziesii Mrs. M. H. Manning 1900-1 Humboldt near Hupa 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
  HSC55158  Chimaphila umbellata Gilbert Muth 1979-8-1 12119 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC74352  Chimaphila umbellata Gail Newton 1980-6-17 211 Humboldt Near Onion Mtn. 1341 Comment
  POM92409  Chrysanthemum leucanthemum L. R. Abrams 1922-6-25 8236 Humboldt 2 miles south of Fortuna Comment
  UCSB1015  Chrysolepis chrysophylla Muller, Cornelius 1954-6-21 Humboldt 8 mi. ESE of Mad River on road to Forest Glen Comment
  UC204118  Chrysosplenium glechomifolium Joseph P. Tracy 1918-4-28 4808 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC1197340  Cicuta douglasii Joseph P. Tracy 1937-8-12 15662 Humboldt Snow Camp 1402 Comment
  UC642264  Cicuta douglasii Joseph P. Tracy 1938-9-25 16169 Humboldt Bald Mountain, at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1066 Comment
  HSC56318  Circaea alpina subsp. pacifica Overton, Butler 1979-8-2 12657 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA245007  Circaea alpina subsp. pacifica William J. Ferlatte, B. D. Rogers 1966-6-15 2095 Humboldt East of Bridge ville on Highway 36 671 Comment
  HSC40678  Cirsium douglasii var. breweri Thomas W. Nelson 1976-7-9 2987 Humboldt Along 1S07 just W of summit 1585 Comment
  UC1565808  Cirsium douglasii var. douglasii R. Spellenberg 1990-7-10 10253 Humboldt 1 mi w of Horse Mountain (7.5 air mi sw of Willow Creek county road 7K100, 4.5 mi s of Berry Summit (on Calif. Hwy. 299), extreme e edge of county) 1219 Comment
  OBI36336  Cirsium occidentale var. candidissimum David J. Keil 1983-7-1 17273 Humboldt Ca 13 mi W of jctn US 101 along Bull Crk Flats Rd Comment
  UC1223058  Cirsium occidentale var. candidissimum Joseph P. Tracy 1950-6-15 18779 Humboldt 5 mi n of Harris (on old Overland Road); Mail Ridge Comment
  HSC97210  Cirsium occidentale var. venustum Kiera A. Freeman, Heather J. Perry 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  CAS-BOT-BC288716  Cirsium remotifolium Doris K. Kildale 1927-7-25 3835 Humboldt Table Bluff near lighthouse Comment
  RSA0070881  Cirsium remotifolium A. K. Kellogg, W. G. W. Harford 1868-1 558 Humboldt [Unspecified] Comment
  UC582534  Cirsium remotifolium var. rivulare Joseph P. Tracy 1931-6-28 9596 Humboldt lower foothills of nw slope of Buck Mountain 914 Comment
  SBBG25858  Cirsium vulgare D. Myrick 1966-8-16 1579 Humboldt Prairie Crk Redwoods State Park 152 Comment
  UC1119201  Cirsium vulgare H. L. Person 1931-7-30 Humboldt Fieldbrook Eureka Quadrangle, Fieldbrook Comment
  HSC75274  Cirsium vulgare J. O. Sawyer, D. A. Thornburgh 1980-9-9 4081 Humboldt Mill Creek Lake and surrounding meadows Comment
  RSA297180  Cirsium vulgare Lincoln Constance 1934-6-11 853 Humboldt South Fork Eel River; Lower Look Prairie and Bull Creek Road to Dyerville Comment
  RSA43835  Cirsium vulgare H. M. Pollard 1948-8-9 s.n. Humboldt Camp Creek, near Orleans. Comment
  UC1196996  Clarkia amoena Joseph P. Tracy 1921-8-28 5947 Humboldt Guthrie Gulch Northern Coast Ranges 91 Comment
  UC1222855  Clarkia amoena Joseph P. Tracy 1950-6-8 18751 Humboldt s of point Cape Mendocino; Devil's Gate 3 Comment
  CAS-BOT-BC160957  Clarkia amoena subsp. amoena Carl B. Wolf 1927-8-29 1199 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge, Mt. Glen Comment
  UC668237  Clarkia amoena subsp. amoena Joseph P. Tracy 1938-6-17 15957 Humboldt s of point Cape Mendocino (near ocean shore) 3 Comment
  POM271818  Clarkia amoena subsp. huntiana Lyman Benson 1929-7-19 1865 Humboldt Dyerville to Matole River. Comment
  HSC63486  Clarkia amoena subsp. huntiana M. A. Baker 1977-6-6 380 Humboldt Along Hwy. 96, Hoopa Indian Res. Comment
  RSA0059976  Clarkia amoena subsp. huntiana Harlan Lewis, M. Lewis 1947-6-12 424 Humboldt U.S. Highway 101, 4.8 miles north of Ohman Creek Bridge (4-07) Comment
  RSA21188  Clarkia amoena subsp. huntiana Carl B. Wolf 1947-8-11 9147 Humboldt North Coast Range, Laribee Valley, 8.5 miles west of Dinsmores 457 Comment
  RSA24287  Clarkia amoena subsp. huntiana Carl B. Wolf 1940-11-10 9783 Humboldt 1 mile inland from Devils Gate (South of Cape Mendocino) on road to Petrolia 152 Comment
  UC1537616  Clarkia concinna subsp. concinna Gordon H. True Jr. 1936-5-11 455 Humboldt w Miranda; Salmon Creek 457 Comment
  UC183698  Clarkia davyi Joseph P. Tracy 1912-7-21 3772 Humboldt Alton Northern Coast Region 30 Comment
  HSC38102  Clarkia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2623 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC164594  Clarkia gracilis subsp. gracilis S. K. Harris; J. P. Tracy 1936-6-10 3261 Humboldt On hills west of the South Fork of the Trinity River near its mouth 640 Comment
  LA47441  Clarkia gracilis subsp. gracilis Joseph P. Tracy; 1913-6-11 4091 Humboldt lower foothills of Buck Mountain, on its NW slope 761 Comment
  UC183772  Clarkia gracilis subsp. gracilis Joseph P. Tracy 1912-7-31 3907 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Burr Valley 1066 Comment
  POM208995  Clarkia purpurea subsp. quadrivulnera Lincoln Constance 1934-5-23 619 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park. 366 Comment
  UC1196979  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1918-7-28 5091 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  UC902172  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1947-6-28 17723 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  UC1198505  Clarkia rhomboidea Joseph P. Tracy 1913-6-20 4214 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC99419  Claytonia cordifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 68 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
  SEINET196688  Claytonia cordifolia H. E. Parks, JP Tracy 1949-6-25 11680 Humboldt Trinity Summit at Box Camp 1460 Comment
  HSC36519  Claytonia exigua subsp. exigua J. D. Ackerman, A. M. Montalvo 1973-3-27 48 Humboldt 1.5 mi. N of Manila 6 Comment
  HSC67185  Claytonia exigua subsp. exigua Thomas W. Nelson, James Nelson 1980-6-10 5421 Humboldt Along road to Red Mtn., 0.5 mi. W of junction with Swayback Ridge Rd. 1372 Comment
  UC494113  Claytonia parviflora subsp. parviflora H. E. Parks, J. P. Tracy 1930-5-25 877 Humboldt Laribee Valley Comment
  SEINET6903113  Claytonia perfoliata Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  HSC79435  Claytonia perfoliata subsp. mexicana Kenneth Clark 1981-4-5 1227 Humboldt Dead Man's Gulch 69 Comment
  JEPS43376  Claytonia perfoliata subsp. mexicana Lincoln Constance 1934-5-26 681 Humboldt North Dyerville Flat grove South Fork Eel River, Bull Creek (near Founders' Tree) 48 Comment
  CAS-BOT-BC440091  Claytonia perfoliata subsp. perfoliata J. M. Miller 1974-6-3 367 Humboldt Horse Mountain, ca. 150 m N. of the junction between Forest Rds. 5N10 and 6N01. On the road shoulder of 5N10. 1371 Comment
  HSC71826  Claytonia saxosa Thomas W. Nelson, Jane P. Nelson 1980-6-27 5957 Humboldt Saddle between Mt. Lassic and peak to E 1677 Comment
  RSA259540  Claytonia saxosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5623 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC54539  Claytonia sibirica Overton, Butler 1979-7-23 9515 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC1052461  Claytonia sibirica H. E. Parks Apr 1933 1421 Humboldt Spruce Cove; Trinidad Comment
  HSC45613  Claytonia sibirica Diane L. Reed 1978-5-7 56 Humboldt Fourmile Creek on Friday Ridge Rd., 4 mi. from Hwy. 299 Comment
  RSA117681  Claytonia sibirica S. S. Tillett 1956-7-3 602 Humboldt 29 miles from jct 101, just past cutoff for Humboldt Ski Club area Comment
  HSC99239  Claytonia washingtoniana C. E. Fellows 1971-6-7 454 Humboldt 0.35 mi. E of Arlington Rd. on Alder Grove Rd. Comment
  HSC18086  Clematis lasiantha Doris K. Kildale 1925-6-27 771 Humboldt Mouth of Yager Creek Comment
  CAS-BOT-BC92598  Clematis ligusticifolia Joseph P. Tracy 1937-8-3 15608 Humboldt Along Mad River, near Blue Lake. 15 Comment
  RSA377079  Clintonia andrewsiana Anstruther Davidson 1927-05 s.n. Humboldt [label data illegible[ Comment
  RSA407373  Clintonia andrewsiana Lyman Benson 1928-7-11 455 Humboldt Bull Creek Flat; Dyerville, Seaward N Coast Mt. Range, South Fork Eel River. 61 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
  UC1537231  Clintonia andrewsiana Gordon H. True Jr. 1936-5-12 469 Humboldt 5 mi n of Kneeland 457 Comment
  SBBG27286  Collinsia grandiflora H. E. Parks, J. P. Tracy 1930-5-25 741 Humboldt Laribee Valley (Larabee Valley) 762 Comment
  UC1196765  Collinsia grandiflora Joseph P. Tracy 1922-5-29 6077 Humboldt South Yager Creek Valley; North Coast Ranges; South Yager Creek Valley 762 Comment
  UC177178  Collinsia grandiflora Joseph P. Tracy 1913-6-14 4135 Humboldt opposite Buck Mtn (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  UC177195  Collinsia greenei Joseph P. Tracy 1912-7-31 3937 Humboldt near Buck Mtn Summit; Northern Coast Ranges, Buck Mtn 1676 Comment
  HSC74348  Collinsia parviflora Gail Newton 1980-6-28 744 Humboldt Near Mad River Butte. 1536 Comment
  UC1196760  Collinsia parviflora Joseph P. Tracy 1929-7-4 8623 Humboldt French Camp Ridge 1066 Comment
  HSC70372  Collinsia rattanii Gail Newton 1980-6-7 129 Humboldt Near Brush Mtn. 1128 Comment
  HSC100660  Collinsia rattanii Carl C. Marshall Jul 1887 414 Humboldt Spruce Grove. Comment
  RSA125053  Collinsia rattanii Peter H. Raven, R. Snow 1958-7-20 13633 Humboldt 2.8 miles south of junction of Titlow Hill and Friday Ridge roads, near Grouse Mountain. Comment
  JEPS13368  Collinsia sparsiflora var. sparsiflora H. E. Parks, J. P. Tracy 1930-5-25 792 Humboldt Laribee Valley 792 Comment
  HSC48850  Collomia grandiflora Brad Klipfel 1973-7-15 208 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC133659  Collomia grandiflora Joseph P. Tracy 1909-8-1 3072 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS71031  Collomia grandiflora Milo S. Baker 1923-7-20 37 Humboldt head Yager Creek Comment
  UCR111241  Collomia heterophylla H. E. Parks 1933-1 01152 Humboldt North Coast, Spruce Cove, Trinidad 76 Comment
  HSC96489  Comarum palustre Gordon Leppig 1997-8-3 634 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  CAS-BOT-BC286025  Conyza canadensis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  RSA0049662  Coptis laciniata Dean Wm. Taylor 2011-5-4 21115 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junciton with Highway 36 734 Comment
  RSA246762  Corallorhiza maculata Robert F. Thorne, Percy C. Everett 1965-8-5 35135 Humboldt Mt. Chamisal: below summit. 747 Comment
  UC429111  Corallorhiza maculata P. E. Goddard 1906-6 685 Humboldt Blocksburg Comment
  RSA46849  Corallorhiza maculata Doris K. Kildale 1927-7-10 3733 Humboldt Gans Prairie, Bald Hills. Comment
  UC13532  Corallorhiza mertensiana Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC40123  Corallorhiza mertensiana Thomas W. Nelson, James Nelson 1976-7-28 3072 Humboldt Along small creek E of old road from Goat Mountain lookout to branch road of FS 2S08 N of Alder Springs. 1555 Comment
  JEPS70115  Cordylanthus maritimus subsp. palustris L. R. Heckard 1972-8-9 3152 Humboldt Margin of Humboldt Bay 2 mi s of Arcata; Humboldt Bay Comment
  HSC58546  Cordylanthus tenuis subsp. viscidus Overton, Butler 1979-7-24 9568 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  HSC100234  Cordyline australis J. P. Smith 2010-5-29 12891 Humboldt Eureka; Near intersection of West Del Norte St. and Railroad Ave. Comment
  SD38604  Corethrogyne filaginifolia var. filaginifolia Edith A. Purer 1932-7-30 4675 Humboldt Sand dunes south of Oric. Comment
  BLMAR363  Cornus glabrata Clara Sander 2003-5-29 363 Humboldt Headwaters Forest Reserve, Floating island pond 451 Comment
  CAS-BOT-BC212017  Cornus nuttallii Doris K. Kildale 1925-4-1 s.n. Humboldt Hungry Hollow near Korbell Comment
  HSC56975  Cornus nuttallii Overton, Butler 1979-7-23 9509 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC6404  Cornus nuttallii Eugene Andreuccetti 1964-5-2 42 Humboldt 1 mi. from Willow Creek, along Hwy. 299 Comment
  HSC41000  Cornus sericea subsp. sericea J. O. Sawyer 1975-10-17 2710 Humboldt S slopes of N Trinity Mtn. Comment
  HSC49701  Cornus sericea subsp. sericea J. O. Sawyer, R. J. Cole 1977-7-3 3017 Humboldt Along Big Hill Rd. (8N01) at Mud Spring. Comment
  UC1199211  Coronopus didymus Joseph P. Tracy 1901-7-31 1234 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 60 Comment
  UC1199212  Coronopus didymus Joseph P. Tracy 1946-5-30 17540 1/2 Humboldt vicinity of Carlotta 30 Comment
  SEINET10448332  Coronopus didymus Mary Susan Taylor 1980-10-9 Taylor 3365 Humboldt Bed of Jacoby Creek, ca. 0.4 mi W of its jct with Arcata Rd, ca. 5 mi S of Arcada in Bayside, Robert Dalenicek property. 15 Comment
  UC1103505  Corylus californica Joseph P. Tracy 1909-8-29 3080 Humboldt Humboldt Hill, N side Northern Coast Region, region about Humboldt Bay 0 Comment
  UC146107  Corylus californica Joseph P. Tracy 1906-6-24 2500 Humboldt Humboldt Hill, S side North Coast Region, region about Humboldt Bay 0 Comment
  CAS-BOT-BC172849  Corylus cornuta subsp. californica Ynez Whilton Winblad 1941-6-27 s.n. Humboldt Between Eureka and Orick Comment
  SEINET12034008  Corylus cornuta var. californica J. P. Tracy 1951-1 19624 Humboldt along Van Duzen at Blue Slide 91 Comment
  CHSC97985  Cotula coronopifolia C. DeLay 2002-5-11 12 Humboldt V St. Humboldt Bay Wildlife Refuge. 5 Comment
  UC166068  Cotula coronopifolia J. P. Tracy 1903-8-9 1948 Humboldt immediate vicinity of Eureka 0 Comment
  HSC5426  Cotula coronopifolia R. Spellenberg 1964-6-15 412 Humboldt Along egde of Humboldt Bay, on the south side of Arcata Comment
  HSC5433  Cotula coronopifolia W. F. Nickel 1965-5-12 Humboldt On H.S.C. campus behind the Biological Sciences building Comment
  CAS-BOT-BC290340  Crepis acuminata Joseph P. Tracy 1935-7-30 14382 Humboldt Salmon Summit 2103 Comment
  CAS-BOT-BC290587  Crepis capillaris L. R. Abrams 1922-6-25 8234 Humboldt 2 mi. south of Fortuna Comment
  RSA47133  Crepis capillaris Doris K. Kildale 1925-7-15 1083 Humboldt Eureka Slough. Comment
  HSC74027  Crepis pleurocarpa Gail Newton 1980-7-11 1313 Humboldt Near Red Mtn. 1341 Comment
  UC485361  Crepis pleurocarpa P. E. Goddard 1906-6 660 Humboldt Lasseck Pk. Comment
  UC1199231  Crocidium multicaule Joseph P. Tracy 1929-3-16 8528 Humboldt at Willow Creek (gravel bar); Trinity River Valley 152 Comment
  UC526751  Crypsis vaginiflora Joseph P. Tracy 1932-9-3 10762 Humboldt Alton to Fortuna; Northern Coast Region, Eel River 15 Comment
  HSC57202  Cryptantha affinis Griswold, Butler 1979-7-10 7108 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  UC1222274  Cryptantha leiocarpa Joseph P. Tracy 1946-6-2 17552 Humboldt Fairhaven Samoa Peninsula Comment
  UC525609  Cryptantha torreyana Joseph P. Tracy 1933-7-25 12865 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC562671  Cuscuta californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8912 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC562673  Cuscuta californica Joseph P. Tracy 1932-7-13 10496 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC44543  Cuscuta occidentalis Brad Klipfel 1973-7-15 162 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC104274  Cuscuta pacifica var. pacifica Samantha E. Andres 2016-5-29 16 Humboldt Salt Marsh Trail, Lanphere Dunes Unit 30 Comment
  UC562479  Cuscuta subinclusa Joseph P. Tracy 1933-8-6 12960 Humboldt e of Orick (Tomlinson Ranch); Bald Hills 762 Comment
  UC922013  Cynodon dactylon Joseph P. Tracy 1949-8-18 16427 Humboldt Eureka 15 Comment
  RSA67017  Cynoglossum grande E. K. Balls 1951-5-9 16516 Humboldt ca. 5 miles S of Richardson s Grove, Highway 101. Comment
  UC1239626  Cynoglossum grande Joseph P. Tracy 1923-3-17 6166 Humboldt vicinity of Garberville; Northern Coast Ranges 121 Comment
  CAS-BOT-BC190379  Cynosurus echinatus H. E. Parks; Joseph P. Tracy 1933-6-11 12542 Humboldt Northern Coast Ranges. Near Miranda. 152 Comment
  HSC9521  Cynosurus echinatus Paul Shields Jun 1955 Humboldt 6 mi. W of Myers Flat Comment
  RSA44473  Cynosurus echinatus Henry M. Pollard 1948-7-17 s.n. Humboldt Orleans. Comment
  UC1145093  Cynosurus echinatus Joseph P. Tracy 1944-7-3 17486 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  RSA91852  Cynosurus echinatus Joseph P. Tracy, H. E. Parks 1933-6-11 12542 Humboldt Near Miranda 152 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-BC114267  Cyperus esculentus Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans. Comment
  CAS-BOT-BC113832  Cyperus niger var. capitatus Joseph Prince Tracy 1938-8-14 16113 Humboldt South Fork of Trinity River, mountain slopes west of its mouth. 304 Comment
  UC14955  Cypripedium montanum Harley P. Chandler June, 1901 1399 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UCR123955  Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6970 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
  UC275410  Cystopteris fragilis Joseph P. Tracy 1925-11-25 7325 Humboldt near S Fork Trinity River Valley; Northern Coast Ranges 182 Comment
  CHSC110734  Cytisus scoparius Dean Wm. Taylor 2011-5-4 21114 Humboldt Alderpoint Road in the vicinity of the Snowline Fox Farm, vicinity of the road crossing of Knack Creek 341 Comment
  SEINET9350894  Cytisus scoparius Unknown 1963-6-2 2698 Humboldt Humboldt Comment
  CAS-BOT-BC189766  Dactylis glomerata Henry M. Pollard 1948-7-28 s.n. Humboldt Roadside near Orleans. Comment
  RSA730951  Dactylis glomerata Gary D. Wallace 1979-6-22 1851 Humboldt Eureka. Parking lot, 6 Rivers National Forest headquarters. Comment
  UC1541567  Dactylis glomerata Harold E. Parks May 1933 4307 Humboldt Spruce Cove Trinidad; Spruce Cove Comment
  SBBG34665  Dactylis glomerata T. L. Secrest 1948-6-29 Humboldt southern Humboldt County [no specific locality] Comment
  CAS-BOT-BC189740  Danthonia californica Joseph P. Tracy 1928-6-24 8463 Humboldt Northern Coast Ranges. Valley of South Yager Creek. 762 Comment
  HSC58653  Danthonia californica G. L. Clifton, Griswold 1979-7-31 11723 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC73543  Danthonia californica Gail Newton 1980-7-14 1468 Humboldt Near Last Chance Ridge. 1219 Comment
  UCD60489  Danthonia californica Joseph P. Tracy 1938-6-17 15951 Humboldt Cape Mendocino. 152 Comment
  UC181243  Danthonia californica var. americana Joseph P. Tracy 1913-6-13 4098 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River, Dinsmore's 762 Comment
  UCD60528  Danthonia californica var. americana R. Tofsrud 1948-7-28 s.n. Humboldt Scotia, south edge of town. Comment
  HSC98849  Danthonia unispicata Cara Witte 2008-7-11 870 Humboldt Horse Mountain Botanical Area. 1/2 mi. south from intersection of National Forest 1, Forest Service Roads 6N38 and 6N36. 1413 Comment
  HSC20252  Darmera peltata Jack Rockwell 1962-4-29 59 Humboldt E bank of Redwood Creek, near Hwy. 299 549 Comment
  UC204116  Darmera peltata Joseph P. Tracy 1918-5-27 4934 Humboldt foot of Grouse Mt. (Redwood Creek); Northern Coast Ranges 457 Comment
  SEINET6421143 Image available Datisca glomerata Joseph P. Tracy 1932-1 10805 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC38645  Daucus pusillus J. P. Smith, J. O. Sawyer 1975-5-31 8147 Humboldt Growing in Samoa Peninsula in wooded area just E of the Eureka-Samoa bridge Comment
  UC1197351  Daucus pusillus J. P. Tracy 1899-7-22 275 Humboldt Eureka Comment
  UC1197352  Daucus pusillus Joseph P. Tracy 1901-8-2 1248 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1197354  Daucus pusillus J. P. Tracy 1907-7-4 2579 Humboldt 1/2 mi. n. mouth of Little River Comment
  UC164990  Deinandra corymbosa J. P. Tracy 1902-8-10 1768 Humboldt immediate vicinity Eureka 0 Comment
  BLMAR630  Delphinium decorum Jennifer Wheeler 2011-6-15 630 Humboldt Lacks Creek, Pine Ridge Road Comment
  UC1196322  Delphinium decorum subsp. decorum J. P. Tracy 1904-5-1 2044 Humboldt bluff back of Bucksport; immediate vicinity of Eureka 0 Comment
  RSA32277  Delphinium decorum subsp. tracyi H. C. Cantelow 1941-4-26 s.n. Humboldt 12 miles SW of Ferndale on Cape Town and Cape Mendocino Comment
  UC183704  Delphinium decorum subsp. tracyi Joseph P. Tracy 1913-6-17 4171 Humboldt near the summit Northern Coast Ranges, Buck Mountain 1676 Comment
  UCR45825  Delphinium decorum subsp. tracyi N. Meiselman, M. Bransom, D. Brown, Ron Hildebrandt 1986-4-19 26 Humboldt North Coast Range, Horse Mountain, 0.5 mi. down Titlow Road from Ski Area 1372 Comment
  UC1196321  Delphinium decorum subsp. tracyi Joseph P. Tracy 1908-6-9 2649 Humboldt open places near hilltops Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC183703  Delphinium decorum subsp. tracyi Joseph P. Tracy 1913-6-17 4156 Humboldt streamlet near summit Northern Coast Ranges, Buck Mountain 1219 Comment
  CAS-BOT-BC10315  Delphinium hesperium Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  RSA152334  Delphinium hesperium Joseph P. Tracy 1948-6-20 18070 Humboldt Trinity River Valley, Willow Creek Comment
  HSC98907  Delphinium nudicaule Cara Witte 2007-5-23 106 Humboldt Near Grouse Mtn. Along 4N32. Approximately 0.5 mi. S of intersection with 5N04 and 4N32E. 1398 Comment
  HSC48946  Delphinium nudicaule M. A. Baker 1979-5-1 700 Humboldt Along old bed of Bluff Creek Comment
  CAS-BOT-BC121960  Delphinium trolliifolium Doris K. Kildale 1927-5-15 3300 Humboldt Petrolia Comment
  OBI35868  Delphinium trolliifolium David J. Keil 1983-7-2 17344 Humboldt 21 mi S of SR 299 along Titlow Hill Rd, SW of Willow Crk Comment
  RSA20971  Delphinium trolliifolium Carl B. Wolf 1937-6-14 8827 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  RSA254789  Delphinium trolliifolium Thomas W. Nelson, James Nelson 1973-5-28 942 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC37428  Delphinium trolliifolium D. W. Snell 1964-4-18 49 Humboldt Mad River bottom, 3 mi. N of Blue Lake Comment
  HSC93674  Deschampsia cespitosa Peter Haggard 1996-7-8 Humboldt Eureka, North Coast Railroad right-of-way. Comment
  UCD61253  Deschampsia cespitosa Malcolm A. Nobs; S. Galen Smith 1949-8-3 1167 Humboldt 1 mile south of Fields Landing, Eel River Valley. Comment
  UC526669  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1927-7-16 8257 Humboldt mouth of Elk R.; Northern Coast Region, around Humboldt Bay, Elk R. 6 Comment
Read comments
Sep 27 2007
  HSC93740  Deschampsia cespitosa subsp. holciformis Gordon Leppig 1998-7-19 983 Humboldt Big Lagoon County Park, Big Lagoon Bog 2 Comment
  CAS-BOT-BC192704  Deschampsia danthonioides Doris K. Kildale 1928-7-1 5309 a Humboldt French Camp - Bald Hills, Orick - Martins Ferry Road Comment
  UCD63594  Deschampsia elongata A. H. Shunk 1923-7-21 Humboldt Bridgeville. Comment
  HSC41656  Descurainia sophia Karen Lu 1977-10-30 Humboldt Lanphere Rd., Arcata, 0.25 mi. E of the bridge over Mad River Slough Comment
  HSC55099  Dicentra formosa G. L. Clifton 1979-7-31 11813 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1362284  Dicentra formosa Kingsley R. Stern 1964-6-16 2112 Humboldt 1.2 mi se Orick (vicinity Orick Dump) Comment
  UC1362290  Dicentra formosa Kingsley R. Stern 1964-6-13 2106 Humboldt 2.3 mi w U.S. Highway 101 (on e bank of Redwood Creek); Redwood Creek Comment
  CAS-BOT-BC402414  Dicentra formosa subsp. formosa N. Wynne; M. Peckham; J. Bamesberger 1994-5-6 41 Humboldt Intersection of Hwy 299 and Redwood Valley Rd on south side of Hwy 299 609 Comment
  RSA50143  Dicentra formosa subsp. formosa E. K. Balls 1949-7-11 13971 Humboldt 35 miles west of Willow Creek on Hwy 299 from Willow Creek to Arcata 305 Comment
  CAS-BOT-BC47495  Dicentra formosa subsp. oregana James Payne Smith, Jr. 1977-7-3 9267 Humboldt Onion Lake Comment
  CAS-BOT-BC253636  Dichanthelium acuminatum subsp. acuminatum R. Spellenberg 1966-9-8 1630 Humboldt Bank of S Fork Eel River at Highway 101, 5 miles S of Garberville Comment
  UC1198173  Dichelostemma capitatum Joseph P. Tracy 1927-5-22 8074 Humboldt Kneeland Prairie 762 Comment
  HSC32320  Dichelostemma capitatum subsp. capitatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5654 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC32860  Dichelostemma capitatum subsp. capitatum Thomas W. Nelson, James Nelson 1973-5-28 939 Humboldt McKeown Ranch N of Dinsmore Comment
  POM161059  Dichelostemma capitatum subsp. capitatum Joseph P. Tracy 1925-5-30 7028 Humboldt Laribee Valley. 701 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
  SBBG892  Dichelostemma ida-maia K. K. Muller 1954-6-21 628 Humboldt Mad River Camp 2 on Mad River Comment
  SEINET200696  Dichelostemma ida-maia J. P. Tracy 1901-6-23 1184 Humboldt Immediate vicinity of Eureka near Ryans Slough Hill 0 Comment
  CAS-BOT-BC501024  Dichelostemma ida-maia Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC36566  Dichelostemma ida-maia Thomas W. Nelson, B. Reinhardt 1975-7-30 2099 Humboldt Along Whiting Ridge Comment
  SEINET3885614  Dichelostemma ida-maia D. W. McNeal 1977-6-6 2045 Humboldt Dry shaded hillside above the Bridgeville-Kneeland Rd., 0.4 mi. N. of Hwy. #36.; 0 Comment
  CAS-BOT-BC150338  Diplacus aurantiacus Doris K. Kildale 1927-5-15 3244 Humboldt Petrolia, back of Mattole River Comment
  SEINET8208225  Diplacus kelloggii Marshall Ross 1942-5-5 1255 Humboldt Trinity National Forest; Hoopa Indian Reservation; 4.6 miles north of Hoopa. 244 Comment
  POM277202  Disporum hookeri var. hookeri Lyman Benson 1928-7-11 163 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  CHSC13521  Disporum smithii A. R. Morrison 1974-4-27 Humboldt Ca. 1.5 mi. off Hwy. 101 on Westhaven Rd., Trinidad. 45 Comment
  UCR67631  Disporum smithii Michael A. Hanson 1990-5-21 70 Humboldt Arcata, 0.5 mi (0.8 km) east of Humboldt State University Life Science Building. 159 Comment
  HSC17861  Dodecatheon hendersonii R. A. Rasp 1964-4-5 26 Humboldt 5 mi. N of Hoopa on Willow Creek Rd. Comment
  HSC17863  Dodecatheon hendersonii E. C. Murczek 1964-4-4 31 Humboldt 5 mi. N of Hoopa along side road Comment
  UC34954  Downingia elegans Chesnut and Drew 1888-7-10 Humboldt near Jarnigan's Comment
  UCSB26681  Drosera rotundifolia Havlik, Neil 1968-8-21 Humboldt South end of Big Lagoon; north of Trinidad Comment
  UC12540  Drymocallis glandulosa var. wrangelliana C. C. Marshall 1888-1 Humboldt Comment
  UC528082  Dryopteris arguta Ira L. Wiggins 1932-6-18 5872 Humboldt hillside at mouth of Little River Comment
  HSC91599  Dryopteris expansa E. Mackey 1987-8-29 Humboldt Patrick's Pont State Park, by bridge over Penn Creek Comment
  POM208982  Dryopteris expansa Lincoln Constance 1934-6-3 811 Humboldt Border of Horse Praire, adjecent to Bull Cr watershed on S side 396 Comment
  RSA693562  Dryopteris expansa Anstruther Davidson 1923-8-11 s.n. Humboldt Redwood Forest Comment
  HSC45062  Dysphania botrys R. Sutherland 1976-8-13 15 .13876 Humboldt Redwood Creek, Whittemore Grove. 87 Comment
  HSC7320  Eleocharis macrostachya C. B. Wolf 1927-8-22 793 Humboldt Big Lagoon Comment
  HSC7317  Eleocharis macrostachya J. Good 1964-5-15 44 Humboldt Mad River Park, 50 yds. N of parking lot Comment
  CHSC96433  Eleocharis pachycarpa Gordon Leppig 1998-7-19 979 Humboldt Big Lagoon County Park, Big Lagoon Bog. UTM Zone 10 NAD 1927, 405321E, 4557202N. 3 Comment
  HSC62866  Elodea canadensis J. M. DiTomaso 1979-5-16 1016 Humboldt Pond below Fern Lake just E of gymnasium on Humboldt State University campus, Arcata. Comment
  HSC62979  Elodea canadensis David Wheeler 1979-5-16 113 Humboldt Humboldt State University Campus, stream just below Fern Lake, E of the handball courts. Comment
  UC212885  Elymus X hansenii Joseph P. Tracy 1919-9-23 5279 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC9678  Elymus caput-medusae R. I. Bonn 1965-10-1 Humboldt 6 mi. N of Bridgeville on Kneeland-Bridgeville Rd. 732 Comment
  UC175632  Elymus elymoides subsp. elymoides Joseph P. Tracy 1912-7-31 3933 Humboldt Buck Mountain Northern Coast Ranges (summit) 1676 Comment
  HSC76540  Elymus glaucus Denis Kearns 1981-7-24 444 Humboldt Near Whiteys Peak. 1768 Comment
  RSA86744  Elymus glaucus subsp. virescens Joseph P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon 6 Comment
  UC526790  Elymus glaucus subsp. virescens Joseph P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  UC1222844  Epilobium brachycarpum Joseph P. Tracy 1950-9-10 19355 Humboldt Bear River Ridge 609 Comment
  HSC64759  Epilobium brachycarpum Bruce Gordon 1978-8-8 125 Humboldt Redwood National Park, 40 m SW of Bald Hills Rd. about .6 mi. NW of junction of Bald Hills Rd. and K & K Rd. 716 Comment
  JEPS39238  Epilobium brachycarpum W. L. Jepson 1932-8-9 16358 Humboldt Bull Creek Redwood Creek 106 Comment
  UC183696  Epilobium campestre Joseph P. Tracy 1912-8-4 3978 Humboldt Carlotta 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
  UC562504  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1933-8-6 12941 Humboldt along stream French Camp Ridge 1066 Comment
  POM247161  Epilobium ciliatum subsp. watsonii H. E. Parks, S. T. Parks 1937-07 24050 Humboldt Spruce Cove, Trinidad. 64 Comment
  JEPS31516  Epilobium densiflorum Joseph P. Tracy 1934-7-9 13352 Humboldt bed of dry pond Dobbyn Creek 152 Comment
  RSA12421  Epilobium hallianum Carl B. Wolf 1934-7-2 5872 Humboldt At edge of small lake at Snow Camp. (Mts. east of Korbel). 1372 Comment
  UC562510  Epilobium hallianum Joseph P. Tracy 1933-7-25 12853 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  RSA181876  Epilobium hallianum Joseph P. Tracy 1930-7-16 8977 Humboldt Northern Coast Ranges: South Fork Mountain; in wet meadow at McKay Camp 1677 Comment
  HSC39234  Epilobium minutum D. E. Anderson, J. P. Smith 1971-7-6 - 1273 Humboldt Horse Mtn. Comment
  HSC70779  Epilobium minutum R. York 1980-5-17 548 Humboldt Near Le Perron Peak 1066 Comment
  CAS-BOT-BC56970  Equisetum arvense Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  SEINET200604 Image available Equisetum arvense J. P. Tracy 1935-7-27 14292 Humboldt Trinity Summit open places at McKay Prairie 1586 Comment
  HSC36459  Equisetum hyemale subsp. affine John Rehling 1976-2-20 112 Humboldt Growing along the banks of the Van Dusen just W of Bridgeville Comment
  UC503078  Equisetum laevigatum H. E. Parks and Joseph P. Tracy 1927-4-24 7925 Humboldt Eureka along R.R. track Eureka; Northern Coast Ranges 6 Comment
  HSC892  Equisetum telmateia subsp. braunii J. W. Johnson 1962-3-31 1420 Humboldt Arcata, along Lanphere lane 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
  HSC38349  Erechtites glomeratus Peter Sorensen 1976-7-14 Humboldt N Spit Comment
  HSC39978  Erechtites glomeratus Linda M. Barker 1976-7-5 1634 Humboldt 3 mi. W of Arcata. Comment
  POM272118  Erechtites minimus Lyman Benson 1929-7-15 1821 Humboldt Clam Beach, Trinidad. Comment
  HSC57936  Eremogone congesta var. suffrutescens G. L. Clifton, Griswold 1979-7-31 11590 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  POM256480  Erigeron aliceae Joseph P. Tracy 1930-7-18 9035 Humboldt South Fork Mountain, near McKay Camp. 1677 Comment
  CAS-BOT-BC27342  Erigeron breweri var. klamathensis Joseph Prince Tracy 1937-7-24 15515 Humboldt Trinity Summit, 2 miles SE of Devil's Hole 1584 Comment
  JEPS41518  Erigeron foliosus var. confinis Harley P. Chandler 1901-6-1 1427 Humboldt Klamath River North Coast Ranges, Klamath River 243 Comment
  CAS-BOT-BC300676  Erigeron foliosus var. mendocinus Joseph P. Tracy 1930-7-4 8829 Humboldt Bull Creek to Mattole Road, near the summit of ridge 762 Comment
  CDA4960  Erigeron glaucus G. D. Barbe, T. C. Fuller 1974-6-17 1834 Humboldt Lower Pacific Drive at Sail Court, west of the golf course, south of the sewer plant, Shelter Cove. 0 Comment
  HSC59670  Erigeron glaucus George Kirn 1977-9-27 Humboldt 0.5 mi. NW of Samoa 8 Comment
  HSC74424  Erigeron klamathensis Gail Newton 1980-7-24 1766 Humboldt Near Somes Mtn. 1615 Comment
  HSC97452  Erigeron klamathensis Cara Witte 2007-6-7 219 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1371 Comment
  HSC95874  Erigeron maniopotamicus Thomas W. Nelson, Sydney Carothers 2004-6-18 9253 Humboldt Board Camp Mountain Road off Forest Service Road 49N38, 1 mile from junction with Forest Service Road 1. 1482 Comment
Read comments
Jun 21 2014
  CAS-BOT-BC214581  Erigeron philadelphicus Volney Rattan No date on label s.n. Humboldt Mad River Comment
  JEPS25617  Erigeron philadelphicus var. philadelphicus Rimo Bacigalupi 1959-7-7 7250 Humboldt immediately behind bluff headland (just n of road summit at this point); Cape Mendocino 30 Comment
  UC87665  Erigeron strigosus var. strigosus Harley P. Chandler June 1901 1402 Humboldt Klamath River North Coast Ranges 243 Comment
  UC24051  Eriodictyon californicum Harley P. Chandler June, 1901 1352 Humboldt Hupa Indian Reservation North Coast Ranges, , Hupa Valley (Hupa Valley) Comment
  HSC55185  Eriogonum compositum G. L. Clifton, Griswold 1979-8-2 12234 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC35695  Eriogonum compositum var. compositum Thomas W. Nelson, B. Reinhardt 1975-7-30 2102 Humboldt Beside road out Whiting Ridge Comment
  CHSC10122  Eriogonum latifolium J. W. Johnson 1961-8-17 1040 Humboldt Arcata. W. M. Lanphere Farm, Samoa Peninsula. On stabilized sand, dune fields. Comment
  RSA667221  Eriogonum latifolium George K. Helmkamp, E. A. Helmkamp 2001-7-8 7016 Humboldt North coast: Samoa Peninsula, 2.6 miles S of CA-255 bridge across Humboldt Bay. 15 Comment
  RSA53819  Eriogonum luteolum H. M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  UC55505  Eriogonum luteolum var. luteolum P. E. Goddard 1901-7-12 82 Humboldt Hupa Comment
  HSC17446  Eriogonum nudum var. auriculatum C. B. Wolf 1927-8-30 1233 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  CAS-BOT-BC261499  Eriogonum nudum var. nudum A. G. Vestal 1937-6-20 s.n. Humboldt 4 mi. N. of Petrolia Comment
  HSC43083  Eriogonum nudum var. nudum Brad Klipfel 1973-8-3 304 Humboldt N Trinity Mtn. 1860 Comment
  HSC47965  Eriogonum nudum var. nudum Brad Klipfel 1974-8-2 542 Humboldt Horse Mtn. Comment
  POM165532  Eriogonum nudum var. nudum Joseph P. Tracy 1916-6-20 4729 Humboldt North Coast Ranges: Dobbyn Creek 183 Comment
  CAS-BOT-BC267970  Eriogonum umbellatum var. argus Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1676 Comment
  HSC39231  Eriogonum umbellatum var. nelsoniorum D. E. Anderson, J. P. Smith 1971-7-6 - 1281 Humboldt Horse Mtn. Comment
  HSC43084  Eriogonum umbellatum var. nelsoniorum Brad Klipfel 1973-8-3 300 Humboldt N Trinity Mtn. 1860 Comment
  HSC98668  Eriogonum umbellatum var. nelsoniorum Cara Witte 2008-7-14 888 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. 1431 Comment
  HSC43081  Eriogonum umbellatum var. nelsoniorum Brad Klipfel 1973-7-31 261 Humboldt N Trinity Mtn. 1860 Comment
  CAS-BOT-BC301007  Eriophyllum lanatum var. achilleoides Lincoln Constance; Reed C. Rollins 1942-5-12 2886 Humboldt Klamath--Siskiyou Region. Mouth of Bluff Creek, 6 miles northeast of Weitchpec 152 Comment
  POM265903  Eriophyllum lanatum var. achilleoides Lincoln Constance, Reed C. Rollins 1942-5-12 2886 Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec. 152 Comment
  SEINET4208670  Eriophyllum lanatum var. achilleoides Thomas Nelson, Jane Nelson; James Nelson 1975-7-15 2028 Humboldt Growing on serpentine outcrop at French Camp, Bald Hills.; 0 Comment
  RSA15568  Eriophyllum lanatum var. arachnoideum C. B. Wolf 1927-8-29 1193 Humboldt 7 miles south of Ferndale and Capetown, Bear River Ridge, Mt. Glen. Comment
  CAS-BOT-BC301684  Eriophyllum lanatum var. lanceolatum Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC44347  Eriophyllum lanatum var. lanceolatum Brad Klipfel 1975-6-17 688 Humboldt Horse Mtn. Comment
  BLMAR818  Eriophyllum staechadifolium Madeleine Hassett 2017-9-9 818 Humboldt King Range, Windy point, down the old road/trail to Punta gorda Lighthouse 5 Comment
  CAS-BOT-BC301925  Eriophyllum staechadifolium A. A. Heller 1924-7-23 13878 Humboldt Along the highway between Little River and Trinidad Comment
  UC1198966  Erodium brachycarpum Joseph P. Tracy 1926-3-14 7387 Humboldt Yager Creek Northern Coast Ranges, Carlotta 60 Comment
  HSC7229  Erodium cicutarium D. E. Anderson 1963-5-19 2463 Humboldt Barry Rd., 1/2 mi. W of Kneeland school Comment
  CAS-BOT-BC41574  Erysimum capitatum S. K. Harris 1936-6-20 3493 Humboldt Above Van Duzen River about 3 miles west of Bridgeville. Comment
  SEINET14045946 Image available Erythranthe guttata Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-1 15260 Humboldt Clam Beach, 15 miles North Eureka. Comment
  HSC44353  Erythronium californicum Brad Klipfel 1974-5-8 319 Humboldt Horse Mountain Comment
  CAS-BOT-BC504310  Erythronium californicum Michalski; Raum; Hopson 1987-4-1 87 Humboldt Larabee Buttes Comment
  HSC98625  Erythronium californicum Cara Witte 2007-5-26 659 Humboldt National Forest 1. 1/2 mile south of intersection with Forest Service Roads 6N38 and 6N36. 1458 Comment
  UC275550  Erythronium californicum Joseph P. Tracy 1924-4-27 6639 Humboldt on hwy near Ruby Creek; Northern Coast Ranges, Willow Creek 609 Comment
  HSC48399  Erythronium grandiflorum subsp. grandiflorum Brad Klipfel 1973-6-10 86 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC44870  Erythronium oregonum subsp. leucandrum J. P. Smith, J. O. Sawyer 1973-5-12 6695 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC403036  Eschscholzia californica Doris K. Kildale 1926-5-9 1981 Humboldt Kneeland Prairie - summit 853 Comment
  HSC59103  Eucalyptus globulus Clark L. Miller 1979-5-24 9157 Humboldt Along Hwy. 101 ca. 100 yards from Murray Rd. off-ramp. Comment
  HSC58769  Eucephalus ledophyllus Terry Griswold 1979-7-26 10299 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  UC1199300  Eucephalus tomentellus Joseph P. Tracy 1934-8-29 13621 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC205151  Eucephalus tomentellus Joseph P. Tracy 1919-9-27 5304 Humboldt Mountain slopes along road between three Creeks and mouth of Willow Creek Willow Creek 914 Comment
  UC249819  Euchiton gymnocephalus Joseph P. Tracy 1923-4-1 6175 Humboldt near Blue Lake; Northern Coast Ranges 304 Comment
  CAS-BOT-BC310494  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  HSC100665  Eunanus douglasii Carl C. Marshall Apr 1887 377 Humboldt Hoopa Valley, dry roadsides. Comment
  HSC4304  Euonymus occidentalis D. E. Anderson 1961-9-23 1834 Humboldt 2.3 mi. S of Kneeland corner Comment
  UC164833  Euphorbia crenulata Joseph P. Tracy 1909-8-29 3083 Humboldt top of Humboldt Hill Northern Coast Region, Humboldt Bay Region (Humboldt Bay Region) 0 Comment
  HSC48607  Euphorbia helioscopia Mark Flippo 1978-4-8 7 Humboldt In McKinleyville, along Bella Vista Rd. Comment
  CAS-BOT-BC413854  Fallopia sachalinensis T. C. Fuller 1962-8-6 9364 Humboldt S. side of Hwy 299 to Willow Creek just e. of road to Bald Mtn., 11.2 mi. e. of Blue Lake Comment
  UC180429  Festuca californica Joseph P. Tracy 1913-6-21 4250 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC525633  Festuca californica Joseph P. Tracy 1926-5-30 7518 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  UC70921  Festuca californica Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 Humboldt Hoopa Mt. Comment
  HSC9852  Festuca californica D. C. Juve 1964-5-16 36 Humboldt Campbell Cr. Ranger Station. Hwy. 96. Hillside above Trinity River Comment
  CAS-BOT-BC278422  Festuca idahoensis Joseph P. Tracy 1930-6-8 8729 Humboldt Northern Coast Ranges. Kneeland Prairie 762 Comment
  UC1103729  Festuca idahoensis Joseph P. Tracy 1926-6-6 7569 Humboldt on road w from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  HSC75355  Festuca occidentalis J. O. Sawyer, M. A. Ericksen 1980-7-18 3644 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  BLMAR400  Festuca rubra Jennifer Anthony-Wheeler 2005-6-29 400 Humboldt South Spit, salt marsh variant 6 Comment
  CHSC32715  Festuca rubra Thomas Nelson; Jane Nelson 1976-7-26 3024 Humboldt The Lassics. Trinity-Humboldt county line. On road cut of 1S07 west of Black Lassic. 1615 Comment
  RSA126621  Festuca rubra H. S. Yates 1936-6-16 5665 Humboldt 1 mile SW of Samoa. 6 Comment
  UC180345  Festuca rubra Joseph P. Tracy 1913-6-13 4097 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD66357  Festuca rubra R. Tofsrud 1948-9-1 Humboldt Road junction near summit of Horse Mt. 1463 Comment
  CAS-BOT-BC282515  Festuca subbiflora W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River Comment
  UC1103707  Festuca subulata Joseph P. Tracy 1913-6-20 4215 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC526846  Festuca subulata Joseph P. Tracy 1934-7-18 13457 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC1056065  Festuca subuliflora J. I. Mallory 1955-2-22 115 Humboldt 1 mi n Luke Prairie Quad. (Quad 29-B-2); Peavine Ridge 701 Comment
  HSC26395  Fragaria chiloensis T. O. Osborne 1970-9-16 35 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC18619  Fragaria chiloensis D. E. Anderson 1962-3-30 1954 Humboldt Coastal area of Prairie Creek State Park Comment
  HSC27127  Frangula californica J. P. Smith, J. O. Sawyer 1973-2-10 5841 Humboldt 2.7 mi. W of Hwy. 96 on Brannan Mtn. Road, N of Willow Creek 366 Comment
  HSC31219  Frangula californica D. E. Anderson 1972-6-20 5730 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  CAS-BOT-BC52734  Frangula californica subsp. californica Carl B. Wolf 1931-8-31 2381 Humboldt Near mouth of South Fork of Trinity River, on road to Sandy Bar Swimming Hole 243 Comment
  HSC15538  Fritillaria affinis T. W. Beck 1963-4-13 21 Humboldt Camp Bauer, Korbel, between baseball backstop and Mad River Comment
  UC176688  Fritillaria affinis Joseph P. Tracy 1913-6-17 4179 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  RSA90636  Fritillaria affinis Ralph Lewis 1936-4-10 s.n. Humboldt Along Redwood Highway, first bridge south of Cummings Comment
  SEINET12050370  Fritillaria affinis F. H. Utech 1988-1 88 -285 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, Mile Marker 42.00, bluff above Van Duzen River 800 Comment
  CDA3559  Fumaria capreolata Gordon Leppig, Sylvia Leppig 2000-12-7 1523 Humboldt 7th and I Street just west of Post Office, Arcata. Comment
  HSC94159  Fumaria officinalis Gordon Leppig, Sylvia Leppig 2000-12-7 1523 Humboldt 7th and I St. just W of Post Office 6 Comment
  HSC73541  Galium aparine Gail Newton 1980-7-14 1477 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC71828  Galium grayanum var. grayanum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5958 Humboldt Saddle E of Mt. Lassic 1677 Comment
  JEPS6513  Galium mollugo Harold E. Parks and Joseph P. Tracy 1937-7-16 11451 Humboldt near Trinidad; near Trinidad 60 Comment
  JEPS6683  Galium muricatum Lincoln Constance 1934-5-23 602 Humboldt se slope of mt. above Look Prairie; South Fork Eek River, Bull Creek Region 365 Comment
  UC35332  Galium muricatum C. C. Marshall 1888-1 Humboldt Comment
  SEINET12514834  Galium nuttallii B. D. Rogers, W. J. Ferlatte 1966-6-15 2092 Humboldt Near Bridge ville. Comment
  UC196077  Galium trifidum Joseph P. Tracy 1900-9-3 941 Humboldt Eureka Northern Coast Region 0 Comment
  HSC38387  Galium trifidum Peter Sorensen 1976-6-14 Humboldt N Spit of Humboldt Bay, S of Samoa near Humboldt County Airport Comment
  HSC53836  Galium triflorum Griswold, Butler 1979-7-10 6286 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC98132  Galium triflorum Cara Witte 2007-6-27 374 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1/2 mile south of intersection with 5N04 and 4N32E. 1425 Comment
  UC602538  Galium triflorum Joseph P. Tracy 1932-7-17 10654 Humboldt woods near Corral Prairie; Trinity Summit 1584 Comment
  HSC98666  Galium triflorum Cara Witte 2007-7-2 398 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1589 Comment
  RSA256577  Galium triflorum J. O. Sawyer 1970-6-24 2270 Humboldt S of Mill Creek Gap. F.S. Road 10N02. 1433 Comment
  HSC40952  Gamochaeta ustulata Linda M. Barker 1976-7-5 1539 Humboldt 3 mi. W of Arcata. Comment
  CAS-BOT-BC303394  Gamochaeta ustulata John Thomas Howell 1936-8-29 12885 Humboldt Eel River 16 miles N of Garberville Comment
  CAS-BOT-BC188536  Garrya elliptica J. P. Tracy 1901-4-14 1030 Humboldt Sand Hills of Ocean Beach at Samoa, opposite Eureka Comment
  HSC49913  Garrya elliptica Maralyn O'Meara 1973-2-19 191 Humboldt McKinleyville, Murray Rd. Comment
  UCD121099  Garrya elliptica Linda M. Barker 1976-1-24 1310 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  CAS-BOT-BC182150  Garrya fremontii Carl B. Wolf 1930-10-24 1762 Humboldt Along the Klamath River, 1 mile above the mouth of Slate Creek 243 Comment
  HSC39551  Garrya fremontii Thomas W. Nelson 1976-6-10 2703 Humboldt Along ridge S of E peak of Lassic Peak 1646 Comment
  HSC97975  Garrya fremontii Cara Witte 2007-7-8 425 Humboldt Board Camp Mountain. Pack trail 4N26. 1/2 mile from Tri Board Camp intersection. 1536 Comment
  RSA21606  Garrya fremontii Carl B. Wolf 1937-8-13 9228 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC1196893  Garrya fremontii Joseph P. Tracy 1947-7-9 17840 Humboldt Horse Mountain 1402 Comment
  UC668298  Garrya fremontii Joseph P. Tracy 1933-3-5 10918 Humboldt Alton North Coast Ranges (along Van Duzen River) 30 Comment
  UCSB72518  Garrya fremontii Moseley, Maynard 1952-8-21 Humboldt Along western valley wall of Willow Creek, mostly within Hoppe Indian Reservation, upstream from Willow Village Comment
  HSC49710  Gastridium phleoides J. O. Sawyer 1977-7-1 2991 Humboldt Aikens campground. Comment
  HSC59858  Gaultheria ovatifolia M. A. Baker 1979-7-6 1011 Humboldt .6 k W of FS rd. 15N01 on rd. 12N16, toward Bald Mtn. Comment
  BLMAR231  Gaultheria shallon Jennifer Anthony-Wheeler 1996-9-26 231 Humboldt King range, growing beside bear creek between Wailaka & Nadelos campground 548 Comment
  CAS-BOT-BC58905  Gaultheria shallon Carl B. Wolf 1930-10-30 1043 Humboldt Old Coast Road, 4 miles south of Thorn 304 Comment
  CAS-BOT-BC58909  Gaultheria shallon Mrs. Rachel Ellery 1916-4-1 s.n. Humboldt Beatrice Comment
  CAS-BOT-BC58911  Gaultheria shallon L. R. Abrams 1916-7-11 6010 Humboldt Mouth of Grizzly Creek on Van Duzor River Comment
  CHSC27892  Gaultheria shallon Susan Perkins 1978-4-25 41 Humboldt Redwood Park, e end of 13th St., Arcata, .8 mi e of City Hall. 7 mi nne of Eureka. 48 Comment
  HSC40118  Gaultheria shallon Dan O'Brien 1962-5-9 Humboldt 4 1/2 mi. E on Fickle Hill Rd. Comment
  HSC89436  Gaultheria shallon P. A. Daly 1984-5-13 25 Humboldt Along trail/Rd. at Trinidad Head. 61 Comment
  HSC98344  Gaultheria shallon Jimerson, J. Pageau 1979-6-12 531 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  RSA50144  Gaultheria shallon E. K. Balls 1949-7-11 13972 Humboldt 35 miles west of Willow Creek on Hwy 299 from Willow Creek to Arcata. 152 Comment
  UC419064  Gaultheria shallon Joseph P. Tracy, H. E. Parks 1930-9-15 766 Humboldt Kneeland Bald Hills, Lawrence Creek Lawrence Creek; Kneeland Bald Hills, Lawrence Creek Comment
  HSC54671  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-7-25 9910 Humboldt Near Grouse Mtn., close to the town of Willow Creek 1646 Comment
  JEPS27606  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10400 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC40676  Gayophytum heterozygum Thomas W. Nelson, Jane P. Nelson 1976-7-1 2925 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  UC505122  Gayophytum humile Joseph P. Tracy 1932-7-11 10424 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  JEPS47045  Gentiana affinis var. ovata W. L. Jepson 1921-8-11 9411 Humboldt Big Lagoon, Humboldt coast Big Lagoon Comment
  HSC96490  Gentiana sceptrum Gordon Leppig 1997-8-3 635 Humboldt Big Lagoon County Park, Big Lagoon Bog. 3 Comment
  RSA183533  Gentiana sceptrum D. E. Anderson 1963-9-6 2810 Humboldt Big Lagoon Sphagnum Bog Comment
Read comments
Feb 26 2014
  UC183701  Gentiana sceptrum Joseph P. Tracy 1913-9-9 4404 Humboldt Patrick's Point North Coast Ranges 30 Comment
  UC668045  Geranium dissectum Joseph P. Tracy 1935-5-25 13876 Humboldt Fort Seward 106 Comment
  HSC8640  Geranium dissectum R. D. Modafferi 1965-5-13 103 Humboldt 2.3 mi. N of Trinidad on Trinity St. 305 Comment
  UC164809  Geranium molle Joseph P. Tracy 1906-5-6 2436 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1198954  Geranium solanderi Joseph P. Tracy 1931-5-23 9453 Humboldt vicinity of Trinidad (Trinidad Station); Northern Coast Region, Trinidad Station 60 Comment
  HSC59612  Geum macrophyllum J. P. Smith, Steve Selva 1970-6-30 4121 Humboldt Comment
  SEINET200730  Gilia capillaris Joseph P. Tracy 1908-7-30 2920 Humboldt Northwest slope of Buck Mtn. 1219 Comment
  HSC73711  Gilia capitata M. A. Baker 1980-7-15 2977 Humboldt Near Whiting Ridge. 1341 Comment
  POM127015  Gilia capitata P. E. Goddard 1907-6-5 116 Humboldt Van Duzen Comment
  UC1222733  Gilia capitata subsp. capitata Joseph P. Tracy 1950-6-15 18789 Humboldt 7 mi n Harris (Mail Ridge); n of Harris, Mail Ridge Comment
  BLMAR590  Gilia capitata subsp. capitata Jennifer Wheeler 2010-7-13 590 Humboldt King range, along Panther Gap Road 792 Comment
  JEPS69517  Gilia capitata subsp. capitata Lincoln Constance 1934-5-23 621 Humboldt sw slope upper end Look Prairie (South Fork Eel River, Bull Creek Region); Bull Creek Region, South Fork Eel River, Look Prairie 365 Comment
  HSC45058  Gilia capitata subsp. pacifica R. Sutherland 1978-4-24 14 .24478 Humboldt 12 Comment
  HSC95157  Gilia capitata subsp. pacifica Gordon Leppig 2003-6-25 1990 Humboldt E side headwaters of Brushy Creek 800 Comment
  RSA63402  Gilia capitata subsp. pacifica C. B. Wolf 1939-7-8 9519 Humboldt Devil's Gate, south of Cape Mendocino. 8 Comment
  UC1051596  Gilia millefoliata Joseph P. Tracy 1948-6-12 18067 1/2 Humboldt near Samoa (on Humboldt Bay, sand dunes); on Humboldt Bay, near Samoa 6 Comment
  UC1197920  Gilia tricolor subsp. diffusa Joseph P. Tracy 1948-5-31 18016 Humboldt Alder Point 304 Comment
  JEPS11824  Githopsis diffusa subsp. robusta Lincoln Constance 1934-6-4 819 Humboldt Look Prairie, and Bull Creek road to Dyerville South Fork Eel River, Bull Creek Region Comment
  UC1197366  Glehnia littoralis subsp. leiocarpa Hattie F. Tracy 1902-6-17 1748 Humboldt sand hills of Ocean Beach at Samoa opposite Eureka Comment
  UCD66788  Glyceria declinata J. Lenz 1950-6-1 Humboldt Cranell Comment
  HSC58552  Glyceria elata Overton, Butler 1979-7-24 9814 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC96582  Glyceria elata Gordon Leppig, Tony LaBanca 2005-6-6 2247 Humboldt Pacific Lumber Co. land, Redwood House Rd., Hely Creek headwaters pond. 630 Comment
  HSC98589  Glyceria elata Cara Witte 2008-7-16 904 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile S of intersection with National Forest 1. 1409 Comment
  UC34100  Glyceria elata Joseph Burtt Davy 1899-6-9 5367 Humboldt Harris Comment
  CAS-BOT-BC282850  Glyceria striata Joseph P. Tracy 1925-7-5 7170 Humboldt Bald Mountain near High Prairie 1066 Comment
  SEINET4584957  Glyceria striata H. Ch 1901-1 1526 Humboldt Klamath River, North Coast Ranges 427 Comment
  RSA42036  Gnaphalium chilense H. C. Cantelow 1936-8-29 1566 Humboldt 1 mile off Riv. [High.?] S. Fork Eel River Bridge, 17 miles N of Garberville Comment
  UC1199353  Gnaphalium palustre Joseph P. Tracy 1918-7-2 4985 Humboldt upper Mattole Valley; Northern Coast Ranges, Mattole Valley 152 Comment
  SEINET8726302 Image available Godetia quadrivulnera C. C. Harris, S. K. Harris, J. P. Tracy 1942-1 s.n. Humboldt 7 miles north and 5 miles east of Willow Creek 165 Comment
  CAS-BOT-BC304733  Grindelia hirsutula Carl B. Wolf 1927-8-22 783 Humboldt Big Lagoon Comment
  CAS-BOT-BC304744  Grindelia hirsutula Marcus E. Jones 1931-7-16 29143 Humboldt Arcata Comment
  SBBG62631  Grindelia hirsutula R. Hartwell 1938-8-5 Humboldt Mattole Rd on coast between Capetown and Petrolia, along beach Comment
  SBBG62632  Grindelia hirsutula H. E. Parks -Aug-1941 24190 Humboldt Big Lagoon Comment
  UC1525546  Grindelia hirsutula John L. Strother 1986-10-12 1355 Humboldt on Samoa Blvd. (rte 255) w of Arcata (nw side of Arcata Bay (Humboldt Bay) opposite Emmerson Div., Sierra Pacific Inc., roadside above saltmarsh); Humboldt Bay, Arcata Bay Comment
  UC479505  Grindelia hirsutula Marcus E. Jones, A. M. 1931-7-16 29143 Humboldt Arcata Comment
  UC520422  Grindelia hirsutula J. A. Moore and J. A. Steyermark 1931-8-9 3687 Humboldt 10 mi n Trinidad 1 Comment
  SJSU8446  Grindelia stricta var. stricta H. T. Harvey 1977-7-5 600 Humboldt Elk R Spit, Humboldt Bay Comment
  JEPS67937  Hackelia setosa Joseph P. Tracy 1937-7-2 15397 Humboldt on Ridge 2 mi e of Grove's Prairie; Trinity Summit 1524 Comment
  UC3687  Hastingsia alba H. N. Bolander 1860-1-1 6559 Humboldt Red Mountains Comment
  HSC52152  Helenium bigelovii Griswold, Butler 1979-7-11 7007 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  CAS-BOT-BC306613  Helenium bigelovii Doris K. Kildale 1925-8-15 1173 Humboldt Elk Horn Prairie - Trinity Summit 1539 Comment
  UC1239638  Heliotropium curassavicum Joseph P. Tracy 1938-8-28 16135 Humboldt Stone Lagoon Beach Comment
  HSC63140  Hemitomes congestum M. A. Baker 1979-6-29 952 Humboldt 900 Comment
  RSA255765  Hemitomes congestum Gary D. Wallace, S. Carlquist, G. Ansley Wallace 1972-6-1 1108 Humboldt Prairie Creek Redwoods St. Pk., E. of Park HQ. 73 Comment
  UC559947  Hemitomes congestum V. Rattan 1878-1 Humboldt Comment
  CAS-BOT-BC310075  Hemizonella minima Doris K. Kildale 1927-7-22 3910 Humboldt Lassecks Peaks - Coral Goat Camp 1661 Comment
  HSC40031  Hemizonella minima Thomas W. Nelson, Jane P. Nelson 1976-6-22 2879 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  HSC44160  Hemizonella minima Thomas W. Nelson, Jane P. Nelson 1977-6-19 3495 Humboldt Above Alder Springs 1585 Comment
  HSC100436  Hemizonella parvula Carl C. Marshall Jun 1886 25 Humboldt South Fork Mtn. Comment
  CAS-BOT-BC306036  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1930-9-1 9174 Humboldt Northern Coast Ranges. Miranda; along South Fork of Eel River 121 Comment
  CAS-BOT-BC306181  Hemizonia congesta subsp. congesta David D. Keck 1944-7-11 5497 Humboldt Cape Mendocino 3 Comment
  CAS-BOT-BC309998  Hemizonia congesta subsp. tracyi Thomas Nelson; Jane Nelson; James Nelson 1975-6-21 1950 Humboldt Beside highway 36 ca. 5 mi. east of Bridgeville Comment
  HSC98193  Hesperocyparis macrocarpa Will Ferrand 2002-4-27 44 Humboldt HSU Campus, 100ft W of library 24 Comment
  HSC98086  Heterocodon rariflorum Cara Witte 2007-7-11 486 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1396 Comment
  HSC40850  Heterocodon rariflorum Thomas W. Nelson 1976-7-9 3000 Humboldt Along W side of ridge S of E peak of Mount Lassic group. 1524 Comment
  CAS-BOT-BC143654  Heteromeles arbutifolia Doris K. Kildale 1927-12-1 4214 Humboldt Klamath River at Orleans Comment
  JEPS45034  Heteromeles arbutifolia Joseph P. Tracy 1925-12-6 7338 Humboldt 3 mi w Bridgeville; Northern Coast Ranges, Van Duzen River 228 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
  CAS-BOT-BC311076  Heterotheca oregona var. rudis Alice Eastwood 1921-7-21 10667 a Humboldt Van Duzen River Comment
  RSA0066094  Heuchera micrantha var. diversifolia Thomas W. Nelson, Jane Nelson 1976-7-1 2904 Humboldt Along serpentine ridge N of Bear Creek. 1463 Comment
  HSC56042  Heuchera rubescens G. L. Clifton, Griswold 1979-7-31 11617 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC1199465  Hieracium albiflorum Joseph P. Tracy 1935-7-28 14331 Humboldt Head of Devil's Hole Trinity Summit 1828 Comment
  RSA595781  Hieracium albiflorum R. S. Woglum 1931-7-15 24 A Humboldt Outer Coast Ranges, Sequoia Park. Comment
  HSC58358  Hieracium greenei Overton, Butler 1979-8-2 12704 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC318530  Hieracium greenei Freed W. Hoffman 1949-7-15 3010 Humboldt East slope of Mule Slide, Franciscan sandstone, Mt. Lassic group a little south of Blue Ridge Comment
  POM360469  Hieracium greenei Thomas W. Nelson, Jane P. Nelson 1977-8-6 3714 Humboldt Along the lower south slope of Mt. Lassic (Signal Peak). 1494 Comment
  CAS-BOT-BC316006  Hieracium nudicaule Henry M. Pollard 1943-8-1 s.n. Humboldt New Orleans Comment
  CDA38204  Hippuris vulgaris E. C. Whitney 1962-7-23 s.n. Humboldt Pepperwood; R. Wallen property. 0 Comment
  HSC34986  Hippuris vulgaris Thomas W. Nelson 1974-9-12 1708 Humboldt KOA campground along E side of Hwy. 101, 3 mi. S of Arcata Comment
  HSC36131  Hippuris vulgaris Trygve F. Dahle III 1972-11-18 7 Humboldt Clam Beach ponds Comment
  HSC59684  Hirschfeldia incana George Kirn 1977-10-15 Humboldt Eureka, Q and 3rd St. 12 Comment
  CAS-BOT-BC280734  Holcus lanatus Doris K. Kildale 1928-6-24 7062 Humboldt Redwood Creek at Berrys 289 Comment
  HSC10132  Holcus lanatus J. R. Eichelberger 1964-5-13 83 Humboldt 1/4 mile from U.S. 101 on the N side of the Mad River. Comment
  UCD84961  Holcus lanatus Henry M. Pollard 1945-8-24 7892 Humboldt Klamath River Canyon. Between Orleans and Camp Creek. Comment
  UCR143024  Holcus lanatus M. S. Jussel 1931-5-2 s.n. Humboldt Northwestern Coast; Outer North Coast Ranges, near Garberville 183 Comment
  RSA603763  Holcus lanatus Joseph A. Ewan 1937-7-2 10454 Humboldt Bull Creek State Park, 2 miles from Dryerville. Comment
  BLMAR150  Holodiscus discolor Donald Hazlett 1994-6-7 150 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC149897  Holodiscus discolor Joseph P. Tracy 1933-8-30 13031 Humboldt Grouse Mountain 1524 Comment
  HSC56316  Holodiscus discolor Overton, Butler 1979-8-2 12655 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC74664  Holodiscus discolor Gail Newton 1981-8-5 2368 Humboldt Near Bug Creek, E Fork 914 Comment
  SD42284  Holodiscus discolor Carl B. Wolf 1937-9-9 9310 Humboldt North coast Range, Wildcat Ridge, 6 3/10 mi. So. of Ferndale 305 Comment
  UC666848  Holodiscus discolor Joseph P. Tracy 1937-6-20 15347 Humboldt Bear River 10 miles upstream from the mouth Bear River 152 Comment
  UC902139  Holodiscus discolor Joseph P. Tracy 1947-8-24 17906 Humboldt Trinity Summit near Box Camp; Trinity Summit 1463 Comment
  HSC58667  Hordeum brachyantherum G. L. Clifton, Griswold 1979-8-1 12081 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  RSA87062  Hordeum brachyantherum Joseph P. Tracy 1933-6-6 12508 Humboldt Trinidad 9 Comment
  SEINET200843 Image available Hordeum brachyantherum Joseph Tracy, Roland von Bothmer; 1980 1911-6-25 3252 Humboldt Bucksport. Region about Humboldt Bay 0 Comment
  UCSB2822  Horkelia tridentata Constance, Lincoln; Beetle, Alan; Tracy, Joseph 1940-5-17 Humboldt Larrabee Valley, near Eureka 762 Comment
  UC659403  Horkelia tridentata subsp. flavescens Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2613 Humboldt near Eureka; Larrabee Valley 762 Comment
  HSC97584  Horkelia tridentata subsp. flavescens C. Witte 2007-5-18 43 Humboldt Near Bottleneck Spring. 1575 Comment
  CAS-BOT-BC206124  Hosackia crassifolia Alice Eastwood; John Thomas Howell 1937-6-23 4852 Humboldt 5 miles from Kneeland on road to Korbel Comment
  HSC99466  Hosackia oblongifolia var. oblongifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 120 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SD53242  Hosackia stipularis Darley F. Howe 1962-5-22 Humboldt 4.3 miles east of Orick on Bald Mountain Road 609 Comment
  UCD128229  Hydrocotyle ranunculoides Linda M. Barker 1976-8-2 1704 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  HSC97448  Hydrophyllum occidentale C. Witte 2007-5-22 84 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1390 Comment
  HSC13539  Hydrophyllum tenuipes R. D. Zortman 1963-5-12 40 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  HSC38628  Hydrophyllum tenuipes D. E. Anderson, J. P. Smith 1971-6-18 - 1100 Humboldt In narrow canyon of the N Fork of Mad River, along Hwy. 299, E of Blue Lake Comment
  HSC99430  Hydrophyllum tenuipes K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 79 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC562602  Hydrophyllum tenuipes Joseph P. Tracy 1924-6-1 6690 Humboldt Lawrence Creek Northern Coast Ranges (at crossing of Kneeland Road) 457 Comment
  UC582691  Hydrophyllum tenuipes Joseph P. Tracy 1937-7-25 15538 Humboldt Little Hors-Linto Creek; Trinity Summit 1371 Comment
  UC1103553  Hypericum anagalloides Joseph P. Tracy 1935-7-25 14229 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UC175706  Hypericum anagalloides Joseph P. Tracy 1912-7-14 3747 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  POM253651  Hypericum androsaemum C. L. Hitchcock, J. S. Martin, A. S. Hitchcock 5442 Humboldt Woods 7 miles east of Shelter Cove. 244 Comment
  UC1198408  Hypericum perforatum Joseph P. Tracy 1914-5-14 4449 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 Comment
  HSC67970  Hypericum perforatum J. P. Smith, Steve Selva 1970-6-14 3831 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  UC169053  Hypochaeris glabra Joseph P. Tracy 1912-7-25 3812 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC311436  Hypochaeris radicata Ashley C. Browne 1936-6-10 s.n. Humboldt Patrick's Point State Park Comment
  HSC26376  Hypochaeris radicata T. O. Osborne 1970-9-16 34 Humboldt Prisoner Rock, Trinidad Comment
  UC1069673  Hypochaeris radicata H. L. Person 1932-7-16 L.H. 25 Humboldt Highway n Trinidad; Rock Point Quad. Comment
  HSC96744  Iliamna latibracteata M. Mesler 2006-7-28 625 Humboldt E of Grouse Mtn., 2.1 mi. from NF 1, below road. 1448 Comment
  RSA366776  Iris Anonymous 1941-6-25 s.n. Humboldt Between Garberville [Garbervill Quad] and Pepperwood [Redcrest Quad] Comment
  UC162596  Iris douglasiana Joseph P. Tracy 1911-6-4 3215 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  JEPS17356  Iris douglasiana W. L. Jepson 1902-6 1909 Humboldt Idolwild; South Fork of Eel River Comment
  RSA135856  Iris douglasiana Lee W. Lenz, E. K. Balls 1951-5-8 16510 Humboldt 21.2 miles south of Scotia, Highway 101 Comment
  UC429165  Iris purdyi P. E. Goddard 1906-6 644 Humboldt above Bells (Eel River); Eel River Comment
  HSC66476  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-25 920 Humboldt On Eyesee Rd., 0.3 mi. N of Hwy. 96, Orleans Comment
  HSC35034  Iris tenuissima Thomas W. Nelson, James Nelson 1975-5-24 1856 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC97581  Iris tenuissima subsp. tenuissima Cara Witte 2007-5-29 131 Humboldt Along National Forest 1. Approximately 1/2 mile south of White Oak Opening. 1251 Comment
  HSC45611  Isatis tinctoria Diane L. Reed 1978-5-7 68 Humboldt E fork of Willow Creek, 34 mi. from Hwy. 101 on Hwy. 299 Comment
  HSC75280  Isoetes bolanderi J. O. Sawyer, D. A. Thornburgh 1980-9-9 4075 Humboldt Mill Creek Lake and surrounding meadows Comment
  CHSC57145  Isolepis cernua L. P. Janeway 1983-9-24 700 Humboldt 10-30 ft from water line of Big Lagoon at county campground (south corner of the lagoon). 3 Comment
  JEPS93174  Isolepis cernua Margriet Wetherwax and Kevin Downing 1993-8-9 2454 Humboldt s side of slough just past Pigeon Point (e side of road, near Bayside Rd and Myrtle, e side of bay, just n of Eureka); Humboldt Bay, Eureka Slough 5 Comment
  HSC13941  Ixia maculata R. van Weemen van Noord 1966-4-16 19 Humboldt 100 yds. S of N end of Samoa Drag St. 9 Comment
  HSC38446  Jaumea carnosa J. P. Smith 1976-7-3 8935 Humboldt Manila, Samoa Peninsula Comment
  HSC102931  Juncus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 934 Humboldt Patterson Meadows 1555 Comment
  UC1103049  Juncus balticus subsp. ater Joseph P. Tracy 1904-7-31 2128 Humboldt Eureka Northern Coast Region 0 Comment
  HSC67959  Juncus bolanderi Steve Selva, J. P. Smith 1970-6-14 3524 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UCR27990  Juncus bolanderi A. C. Sanders 1981-8-6 2300 Humboldt Near Orick, 1.6 mi west of Hwy 101 on Davison Road toward Gold Bluffs Beach Comment
  HSC96355  Juncus bolanderi Gordon Leppig 1998-8-23 1070 Humboldt Big Lagoon Bog in standing water 1 Comment
  CHSC10121  Juncus breweri J. W. Johnson 1961-8-17 Humboldt Arcata. In the vernal pond community of Hollow 10, W.M. Lanphere Farm. Samoa Peninsula. Comment
  HSC14098  Juncus bufonius var. occidentalis H. E. Parks, J. P. Tracy 1935-6-16 11273 Humboldt Buck Mt., lower NW slopes 793 Comment
  UC249747  Juncus covillei var. obtusatus Joseph P. Tracy 1923-6-19 6294 Humboldt Upper Mattole Valley Northern Coast Ranges 152 Comment
  UC1103039  Juncus ensifolius Joseph P. Tracy 1926-6-27 7665 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  UC1152095  Juncus ensifolius Joseph P. Tracy 1937-7-25 15563 Humboldt 6 mi ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  JEPS63872  Juncus hesperius Henry Melde 1902-2-8 Humboldt Eureka Comment
  HSC57015  Juncus laccatus Walter Overton, Marvin Butler 1979-7-24 9621 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  CDA39191  Juncus lescurii Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon County Park, Big Lagoon Bog. Comment
  HSC14075  Juncus oxymeris D. E. Anderson 1965-9-5 4089 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  UC14884  Juncus patens J. P. Tracy 1900-9-3 935 Humboldt immediate vicinity Eureka 0 Comment
  UC1152147  Juncus phaeocephalus var. paniculatus Joseph P. Tracy 1938-7-24 16086 Humboldt corner of Pacific and A Streets Eureka Comment
  UC1152084  Juncus tenuis Joseph P. Tracy 1928-6-24 8464 Humboldt Valley of South Yager Creek 762 Comment
  UC35025  Kalmia polifolia subsp. microphylla J. Burtt Davy 1899-6-23 5823 Humboldt Trinity Summit; North Coast Ranges, Trinity Summit 2133 Comment
  HSC59856  Keckiella corymbosa M. A. Baker 1979-7-7 1018 Humboldt 9.5 km E of Berry Summit along Hwy. 299, N bank of Willow Creek Comment
  CAS-BOT-BC237835  Keckiella lemmonii Marcus E. Jones 1931-7-16 28828 Humboldt Junction, East of Arcata Comment
  UC577412  Keckiella lemmonii Joseph P. Tracy 1929-8-4 8648 Humboldt ridge between Bull Creek and Mattole River 762 Comment
  CAS-BOT-BC340427  Lactuca saligna Joseph P. Tracy 1946-8-25 17650 Humboldt Eel River, Alton to Fortuna 15 Comment
  UC1223072  Lactuca serriola Joseph P. Tracy 1949-8-8 18402 Humboldt at Willow Creek (in Frank Graham's orchard); Trinity River Valley 152 Comment
  UC1239535  Lactuca serriola Joseph P. Tracy 1934-8-14 13577 Humboldt Holmes Flat North Coast Ranges, Holmes Flat 60 Comment
  HSC14213  Lamium purpureum R. C. Drewien 1963-3-24 7 Humboldt McKinleyville, Turner Dr. and Mill Creek crossing Comment
  HSC14214  Lamium purpureum S. J. Roberts 1965-4-10 26 Humboldt Dike of old Mad River channel Comment
  UC1223223  Lapsana communis Joseph P. Tracy 1950-8-7 19275 Humboldt 1 mi w of lower end Croghan Hole; Trinity Summit Comment
  UC249830  Lasthenia californica subsp. californica Joseph P. Tracy 1923-7-4 6520 Humboldt valley South Yager Creek; Northern Coast Ranges 762 Comment
  UC169054  Lasthenia glaberrima Joseph P. Tracy 1912-7-21 3779 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC195066  Lasthenia glaberrima Joseph P. Tracy 1916-6-19 4720 Humboldt Dobbyn Creek Northern Coast Ranges, Dobbyn Creek 182 Comment
  CAS-BOT-BC204952  Lathyrus japonicus Doris K. Kildale 1925-7-15 1086 Humboldt Eureka Slough Comment
  UC1199083  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1922-4-30 6010 Humboldt near The South Fork; Trinity River Valley 182 Comment
  HSC71352  Lathyrus latifolius J. P. Smith, J. O. Sawyer 1976-5-2 8622 Humboldt 3.7 mi. N of junction with Hwy. 299 on Hwy. 96 61 Comment
  UCD106361  Lathyrus latifolius W. A. Williams 1951-6-15 s.n. Humboldt 20 mi. E. Willow Creek. Comment
  CHSC859  Lathyrus littoralis M. Anthony 1960-5-14 Humboldt Near Arcata. Comment
  UC494114  Lathyrus littoralis H. E. Parks 1930-5-24 798 Humboldt Little River Lagoon Comment
  HSC97937  Lathyrus nevadensis subsp. nevadensis Cara Witte 2007-5-31 148 Humboldt Along National Forest 1. Approximately 1 mile south of 4E27. 1489 Comment
  JEPS64859  Lathyrus nevadensis var. nevadensis Harley P. Chandler Jun 1901 1290 Humboldt Hupa Indian Reservation North Coast Ranges 1097 Comment
  CAS-BOT-BC205043  Lathyrus palustris Malcom A. Nobs; S. Galen Smith 1949-8-3 1187 Humboldt At the southern outskirts of Eureka Comment
  UC162872  Lathyrus torreyi Joseph P. Tracy 1906-6-10 2475 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC100520  Lathyrus torreyi Carl C. Marshall Jun 1886 319 Humboldt Trail E of Hoopa. Comment
  JEPS79919  Lathyrus vestitus var. ochropetalus Joseph P. Tracy 1929-5-5 8579 Humboldt Phillipsville, facing South Fork of Eel River South Fork of Eel River; Northern Coast Ranges 121 Comment
  UC169300  Lathyrus vestitus var. vestitus Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3610 Humboldt near Hydesville; Northern Coast Region 30 Comment
  HSC39786  Layia carnosa Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  RSA0008479  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt Ocean Beach at mouth of Little River Comment
  UCD133993  Leontodon saxatilis H. S. Reed 1941-7-26 s.n. Humboldt near Trinidad. Comment
  UC1199164  Lepidium nitidum Joseph P. Tracy 1933-5-20 12225 Humboldt 3 mi s point of Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  POM299436  Leptosiphon androsaceus S. K. Harris, C. C. Harris 1942-6-17 s.n. Humboldt 1 mile north and 3 miles east of Chalk Mountain 665 Comment
  UC176462  Lessingia nemaclada Joseph P. Tracy 1908-6 2889 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  JEPS37563  Leucanthemum vulgare Lincoln Constance 1934-6-6 827 Humboldt Fire trail Dyerville tottorse Prairie; Bull Creek Region Comment
  SEINET7881646 Image available Leucanthemum vulgare H. E. Parks, S. T. Parks 1943-1 24257 Humboldt Spruce Cove, Trinidad 60 Comment
  UC573707  Leymus mollis subsp. mollis H. S. Yates 1936-6-18 5727 Humboldt near mouth of Little River; Eureka Quadrangle 4 Comment
  SEINET11764870  Lilaea scilloides J. P. Tracy 1950-6-18 18844 Humboldt Davis Creek, Cape Mendocino, S of point of the Cape 30 Comment
  CAS-BOT-BC508397  Lilium columbianum W. R. Dudley 1899-1-1 s.n. Humboldt Big Lagoon, south of Klamath River Comment
  HSC89438  Lilium columbianum P. A. Daly 1984-6-16 28 Humboldt Open bluffs of Trinidad Head trail 61 Comment
  UC179932  Lilium columbianum Joseph P. Tracy 1914-9-7 4617 B Humboldt 10 mi e Korbel (near the Bald Mt. House); Northern Coast Ranges 914 Comment
  CAS-BOT-BC130637  Lilium kelloggii Albert M. Vollmer; Ira L. Wiggins 1940-7-4 6 Humboldt On Orick-Weitchpec road, 15 miles west of Weitchpec 944 Comment
  CAS-BOT-BC130689  Lilium occidentale Doris K. Kildale 1925-6-30 1384 Humboldt On road to Humboldt Country Club 7 miles south of Eureka Comment
  CAS-BOT-BC130729  Lilium pardalinum Doris Kildale 1931-5-16 10686 Humboldt Snow Camp Comment
  UC666950  Lilium pardalinum Joseph P. Tracy 1938-7-4 15994 Humboldt Valley of South Yager Creek 762 Comment
  HSC57043  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-24 9687 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC132959  Lilium rubescens A. M. Vollmer; L. Beane 1951-6-11 135 Humboldt Bridgeville Comment
  HSC98357  Lilium vollmeri T. Jimerson, J. Pageau 1979-6-22 600 Humboldt Near Bee Mtn., close to the town of Orleans 656 Comment
  UC1005603  Limnanthes douglasii Frank W. Gould 1939-5-29 836 Humboldt near ski hut; Horse Mountain 1005 Comment
  UC275336  Limnanthes douglasii Joseph P. Tracy 1924-5-4 6667 Humboldt near Bridgeville; Northern Coast Ranges 304 Comment
  HSC90329  Limonium californicum Jean Hanson 1980-6-22 103 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  UC427875  Linanthus androsaceus H. E. Parks, J. P. Tracy 1930-5-25 794 Humboldt vicinity Bridgeville; Laribee Valley Comment
  UC702549  Linanthus androsaceus C. C. and S. K. Harris 1942-6-17 1272 Humboldt 1 mi n and 3 mi e Chalk 665 Comment
  JEPS58247  Linanthus bicolor Joseph P. Tracy 1937-5-17 15287 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC15802  Linum bienne F. B. Plett 1963-4-9 15 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  HSC95072  Linum bienne Andrea Pickart 2002-7-2 146 Humboldt King Salmon Sand Spit 0 Comment
  HSC39788  Linum bienne Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  UCSB30603  Linum bienne Edwards, David 1974-8-12 Humboldt North side of 7th. St., just W. of its overpass of U.S. 101, Arcata 18 Comment
  HSC7384  Lipocarpha occidentalis J. P. Tracy 1931-9-7 9650 Humboldt Trinity River Valley, Willow Creek 152 Comment
  JEPS37740  Lithocarpus densiflorus W. L. Jepson 1902-7-14 2024 A Humboldt Hupa Comment
  UC1196369  Lithocarpus densiflorus Joseph P. Tracy 1926-10-6 7807 Humboldt between South Fork of Trinity River and Madden Creek (mountain back of Ammon Ranch); Northern Coast Ranges 609 Comment
  SACT002878  Lithocarpus densiflorus D. McIntosh, L. Sanny 1959-3-1 Humboldt Densely covered hillside Comment
  CAS-BOT-BC36103  Lithocarpus densiflorus var. densiflorus L. R. Abrams 1916-7-11 6005 Humboldt Between Blackberry and Bridgeville Comment
  CAS-BOT-BC36147  Lithocarpus densiflorus var. densiflorus Doris K. Kildale 1926-7-25 2438 Humboldt Briceland Bridge. 1/2 mile west of Gaberville 114 Comment
  JEPS81092  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson and Jane P. Nelson 1978-2-5 3760 Humboldt Kneeland; e side of junction of Kneeland and Maple Creek roads 670 Comment
  RSA21079  Lithocarpus densiflorus var. densiflorus Carl B. Wolf 1937-8-13 9239 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  HSC20225  Lithophragma affine D. E. Anderson 1963-5-19 2468 Humboldt Kneeland Area Comment
  HSC97180  Lithophragma campanulatum Benjamin Hart, Erin Lonergan 2007-6-13 10 Humboldt 1 mi. E of USFS Rd. NF1 on 5N04 1524 Comment
  UCD66191  Lolium multiflorum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1177 Humboldt Around Fields Landing. Comment
  RSA728076  Lolium perenne Gary D. Wallace 1979-6-24 1860 Humboldt Near Brush Mountain Lookout, SW of the town of Willow Creek. 1216 Comment
  UC50705  Lolium perenne J. Burtt Davy 1899-6-18 5518 Humboldt Pepperwood bottoms; North Coast Ranges, Pepperwood bottoms Comment
  UCD66413  Lolium perenne Linda M. Barker 1976-7-5 1646 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  BLMAR646  Lomatium Jennifer Wheeler 2011-5-27 646 Humboldt Lacks Creek, Oak woodland of Stormy Saddle 1097 Comment
  HSC32942  Lomatium californicum Thomas W. Nelson, James Nelson 1973-5-28 954 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS16098  Lomatium californicum W. L. Jepson 1902-6-20 1892 a Humboldt Fort Seward Ranch Ridge (= Mail Ridge) 1219 Comment
  UC906634  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1947-7-5 17779 Humboldt ridge top 1 mi. w. Mud Springs (Trinity Summit); Trinity Summit 1158 Comment
  SEINET189441  Lomatium dissectum Lincoln Constance, Alan A. Beetle; Joseph P. Tracy 1940-5-17 2617 Humboldt Lower slopes of Buck Mountain; near Eureka. 792 Comment
  UC906633  Lomatium dissectum var. dissectum Joseph P. Tracy 1942-6-21 17220 Humboldt at Willow Creek Trinity R. Valley 152 Comment
  HSC75960  Lomatium macrocarpum Overton, Butler 1979-7-24 9738 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC1463743  Lomatium tracyi Barbara Kelly 1978-5-1 590 Humboldt 1/4 mi from Horse Mountain Road, 1/2 mi below turnoff to summit, near end of unused gravel road. Comment
  HSC32228  Lomatium triternatum var. triternatum J. O. Sawyer 1970-6-24 2227 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC154087  Lomatium utriculatum Joseph P. Tracy 1908-6-8 2626 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1239545  Lonicera ciliosa Joseph P. Tracy 1936-8-7 15115 1/2 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC81687  Lonicera conjugialis Thomas W. Nelson 1979-7-11 5001 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC1222488  Lonicera conjugialis Joseph P. Tracy 1951-6-16 19483 Humboldt summit of the Siskiyous at crossing of Takilma-Happy Camp Road Siskiyous Comment
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Jul 31 2012
  UC1239554  Lonicera hispidula var. vacillans Joseph P. Tracy 1911-7-9 3469 Humboldt near mouth Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  UC35427  Lonicera hispidula var. vacillans Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  SEINET10745663  Lonicera hispidula var. vacillans J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13012 Humboldt On U.S. 101, near Holmes, 1.76 km south of Stafford Road. Comment
  SEINET11168851 Image available Lonicera involucrata Unknown 1974-8-11 Humboldt Trinidad Comment
  CAS-BOT-BC241488  Lonicera involucrata var. ledebourii Ashley C. Browne 1938-6-11 s.n. Humboldt Patrick's [Patricks] Point State Park Comment
  CAS-BOT-BC200915  Lotus Doris Kildale Gillespie 1931-6-7 10589 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  HSC81932  Lotus aboriginus Thomas W. Nelson, Jane P. Nelson 1979-7-3 4961 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  RSA246781  Lotus corniculatus Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35231 Humboldt North edge of Eureka, east of Highway 101 5 Comment
  UC1197310  Lotus formosissimus J. P. Tracy 1901-6-30 1200 Humboldt immeditate vicinity Eureka 0 Comment
  UC1052456  Lotus humistratus H. E. Parks Aug 1941 24183 Humboldt Little River State Park Comment
  HSC45614  Lotus humistratus Diane L. Reed 1978-5-7 51 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  SEINET6932529  Lotus humistratus Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt About 4 miles southeast of Kneeland. Comment
  UC162804  Lotus humistratus Joseph P. Tracy 1906-7-4 2531 Humboldt near Hydesville; Northern Coast Region, Yager Creek 60 Comment
  JEPS19455  Lotus micranthus Joseph P. Tracy 1917-5-30 4795 Humboldt Northern Coast Region, mouth of Little River Little River; Northern Coast Region, Little River 6 Comment
  CDA27306  Lotus purshianus T. C. Fuller 1958-6-17 1721 Humboldt Petrolia, Lower Mattole. 0 Comment
  JEPS55745  Lotus purshianus var. purshianus Lincoln Constance 1934-5-26 667 Humboldt s end Dyerville Bridge (South Fork Eel River); , Bull Creek Region 45 Comment
  UC1197287  Lotus purshianus var. purshianus Joseph P. Tracy 1912-6-30 3713 Humboldt Eureka Northern Coast Region 0 Comment
  POM232036  Lotus unifoliolatus I. L. Wiggins 1930-7-22 4689 Humboldt Along bank of Redwood Creek btwn Blue Lake and Willow Creek. Comment
  RSA246782  Lotus unifoliolatus Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-7 35225 a Humboldt Samoa Peninsula. 3 Comment
  RSA32848  Lotus unifoliolatus A. A. Heller 1923-7-9 13778 Humboldt Near Blue Lake, 5 miles from Arcata. Comment
  HSC38527  Lotus unifoliolatus var. unifoliolatus D. E. Anderson, J. P. Smith 1971-6-18 - 1069 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC40946  Lotus unifoliolatus var. unifoliolatus Linda M. Barker 1976-6-1 1548 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC72621  Lotus unifoliolatus var. unifoliolatus J. P. Smith 1977-7-3 9235 Humboldt On Forest Service Road 13N01 to Fish Lake, 3.5 mi. from its junction with Highway 36 488 Comment
  UC1223408  Lotus yollabolliensis Joseph P. Tracy 1933-7-16 12798 Humboldt near McKay Camp (near the top of South Fork Mountain); South Fork Mountain 1676 Comment
  UC1196934  Ludwigia palustris Joseph P. Tracy 1923-6-27 6383 Humboldt shore of Lack Pond (opposite mouth of Willow Creek); Northern Coast Ranges, Trinity R. Valley, Lack Pond 182 Comment
  RSA170200  Luina hypoleuca Joseph P. Tracy 1944-8-13 17489 Humboldt Near Romanzoffia Creek. Willow Creek Canyon, along Trinity Highway 366 Comment
  CAS-BOT-BC201191  Lupinus Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  JEPS85681  Lupinus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt along summit near Blake lookout, South Fork Mountain (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  SEINET5736964 Image available Lupinus Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6113 Humboldt Collected in a waste area along Giuntoli Lane in Arcata. Adjacent to Eureka Sand and Gravel company and across the road from T.P. Tire Service (1265 Giuntoli Lane).; Arcata Comment
  SEINET202281  Lupinus albicaulis Joseph P. Tracy 1937-8-12 15656 Humboldt Snow Camp. 1402 Comment
  UC169051  Lupinus albifrons Joseph P. Tracy 1912-8-3 3969 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC198580  Lupinus albifrons Joseph P. Tracy 1916-6-19 4707 Humboldt Burr Creek Northern Coast Ranges, Burr Creek (on high ridges at Robertson Ranch) 914 Comment
  SD39026  Lupinus arboreus Charlotte M. Hook 1931-7-14 2105 Humboldt Above Eureka, sand dunes & coastal canyon Comment
  UC1129356  Lupinus arboreus G. T. Nordstrom Jul 1937 1441 Humboldt 1.5 mi sw Orick; Orick Quad. 152 Comment
  RSA296737  Lupinus arboreus var. arboreus J. P. Smith, T. W. Nelson 1977-6-30 9218 Humboldt Samoa Peninsula just east of the drag strip. Comment
  HSC101036  Lupinus elmeri A. Thoele, Sydney Carothers 1995-7-14 58 Humboldt Six Rivers National Forest; .6 mi. south of intersection of Forest Route 1 & Rd. 3N06, on the edge of Route 1. 1720 Comment
  JEPS95261  Lupinus elmeri A. Thoele and S. Carothers 1995-7-14 1000 Humboldt near Trinity Co. line; along Six Rivers Nat. Forest Rte.1(=South Fork Mountain Rd.), 0.6 mi S of int. with road 3N06; ca. 1 mi SE of Blake Mountain campground; ca. 30 airmiles ESE of Eureka 1719 Comment
Read comments
Sep 7 2010
  SEINET12165812  Lupinus formosus J. T. Vale 1988-1 s.n. Humboldt nr Honeydew Comment
  HSC102108  Lupinus latifolius var. latifolius M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1011 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  JEPS65077  Lupinus lepidus var. sellulus Joseph P. Tracy 1918-7-5 5021 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  CHSC921  Lupinus littoralis M. Underhill 1952-7-13 Humboldt Near coast. 0 Comment
  SEINET10486132  Lupinus polycarpus Donald E. Bright 1962-6-10 Bright 269 Humboldt Roadside, 5 mi s of ferndale. Comment
  SEINET10486156  Lupinus polycarpus Charles R. Gunn 1963-6-3 Gunn 2702 Humboldt 1/2 mi s of korbel on gravel road. In ditch along south mad river. Comment
  JEPS65420  Lupinus polyphyllus W. L. Jepson 1902-6-24 1927 Humboldt Eureka to Arcata; Eureka to Arcata Comment
  HSC14860  Lupinus polyphyllus H. E. Parks, S. T. Parks May 1930 737 Humboldt Vicinity of Alton Comment
  HSC59681  Lupinus rivularis George Kirn 1977-10-12 Humboldt South shore Little River, 1/2 mile from mouth 8 Comment
  SEINET10450622  Lupinus sellulus var. lobbii Thomas W. Nelson, Jane P. Nelson 1976-6-15 Nelson 2710 Humboldt Growing on serpentine along old trail from lookout to blocksburg. 1524 Comment
  CHSC943  Lupinus variicolor M. Underhill 1952-7-13 Humboldt 0 Comment
  HSC98824  Luzula comosa Cara Witte 2007-5-24 117 Humboldt Along National Forest 1. Approximately 1 mile south of intersection to Horse Mountain Mine and Communication Towers. 1412 Comment
  UC1152137  Luzula comosa Joseph P. Tracy 1938-5-8 15738 Humboldt 4 mi e town (vicinity of Carlotta, edge of woods near Cummings Creek); near Cummings Creek, vicinity of Carlotta 30 Comment
  UC3007  Luzula parviflora Harley P. Chandler May, 1901 1163 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  HSC83992  Luzula parviflora L. P. Janeway 1983-5-1 253 Humboldt Along dirt rd. E of HSU water tank 61 Comment
  HSC102059  Luzula subcongesta M. R. Mesler, Robin Bencie, K. A. Wayman 2011-7-12 1165 Humboldt Patterson Meadows 1566 Comment
  UC103678  Luzula subsessilis Joseph P. Tracy 1918-5-5 4925 Humboldt sand dunes of Ocean Beach at Humboldt Bay; Northern Coast Region, Ocean Beach at Humboldt Bay Comment
  HSC97349  Lycopodium clavatum D. E. Anderson 1965-11-26 4176 Humboldt 2 mi. E. of Moonstone Beach Comment
  HSC96513  Lysichiton americanus Gordon Leppig 1999-4-15 1114 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA183502  Lysichiton americanus T. L. Grosz 1964-5-1 C Humboldt 300 yards up on Park Ave. and behind Myrtle Ave. Comment
  UC1222701  Lysichiton americanus Joseph P. Tracy 1950-7-6 18992 Humboldt lower end of Burr Valley Comment
  UC524124  Lythrum hyssopifolia Ira L. Wiggins 1932-7-19 5889 Humboldt about 8 mi n of Arcata (near Clam Beach) Comment
  HSC89989  Lythrum hyssopifolia Leonel Arguello 1989-6-10 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, at the end of the Fernstrom-Root trail, along W border of the salt marsh. 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-BC342805  Madia elegans S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3483 Humboldt Highway about one mile west of Bridgeville Comment
  HSC97613  Madia elegans Cara Witte 2007-6-4 180 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  SEINET11810577  Madia elegans J. P. Tracy 1947-1 17827 Humboldt Horse Mountain 1067 Comment
  CAS-BOT-BC343029  Madia gracilis David D. Keck 1944-7-11 5500 Humboldt 12.3 mi. S.E. of Petrolia; halfway between upper Mattole and Honeydew, Mattole River 121 Comment
  HSC44541  Madia gracilis Brad Klipfel 1973-7-15 160 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS40364  Madia gracilis Lincoln Constance 1934-5-29 728 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  JEPS7387  Madia gracilis Joseph P. Tracy 1932-7-13 10494 Humboldt at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UCSC000290  Mahonia nervosa Beryl O. Schreiber 1934-6-5 1137 Humboldt road to Redding, 20 miles east of Blue Lake Redding, Blue Lake Comment
  HSC99058  Mahonia pinnata subsp. pinnata Cara Witte 2008-7-2 802 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  CHSC27891  Maianthemum dilatatum Susan Perkins 1978-4-25 44 Humboldt Redwood Park, e end of 13th St., Arcata. 0.8 mi e of City Hall. 7 mi nne of Eureka. 48 Comment
  UC1134630  Maianthemum dilatatum H. S. Yates 1936-6-23 5864 Humboldt 1 mi. s. Loleta; Rohnerville Quad. Comment
  CAS-BOT-BC508502  Maianthemum dilatatum Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka Comment
  HSC15597  Maianthemum dilatatum W. D. Stevens 1964-5-12 15 Humboldt E end of 14th St., Arcata Comment
  HSC57938  Maianthemum racemosum subsp. amplexicaule Gilbert Muth 1979-8-1 11600 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 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
  HSC38998  Maianthemum racemosum subsp. amplexicaule Thomas W. Nelson, Jane P. Nelson 1976-5-31 2658 Humboldt County line, S of meadow along 5E27 just N of its junction with 1S07 1524 Comment
  RSA289948  Maianthemum racemosum subsp. amplexicaule Lincoln Constance 1934-6-2 793 Humboldt Bull Creek road to mouth of Bull Creek, and up Bull Creek. Bull Creek region, South Fork Eel River Comment
  CAS-BOT-BC512771  Maianthemum stellatum V. Rattan 1883-6-1 s.n. Humboldt Near summit between Pilot Creek and South Fork Trinity River Comment
  RSA246761  Malus fusca Robert F. Thorne 1965-8-9 35300 Humboldt Big Lagoon. 3 Comment
  UC1198762  Malus fusca Joseph P. Tracy 1926-4-11 7410 Humboldt Blue Slide Northern Coast Ranges (on Van Duzen River) 91 Comment
  HSC100465  Marah Carl C. Marshall Apr 1886 55 Humboldt Everywhere. Comment
  UC990711  Marah oregana Roxana S. Ferris 1951-9-5 12448 Humboldt Trinidad Head Comment
  UCR51832  Marah oregana J. D. Ackerman 1975-6-10 451 Humboldt Humboldt Bay, c. 1 mi. north of Samoa bridge turnoff from Samoa Blvd., south of Manila Comment
  RSA91365  Medicago arabica Joseph A. Ewan 1937-7-2 10458 Humboldt Trinidad to Trinidad Head. Comment
  UC1103762  Melica bulbosa Joseph P. Tracy 1927-5-22 8073 Humboldt Kneeland Prairie; Northern Coast Range 762 Comment
  UC1103761  Melica fugax Joseph P. Tracy 1913-6-17 4193 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  CAS-BOT-BC281324  Melica harfordii Doris K. Kildale 1928-6-24 5287 Humboldt Horse Mountain 914 Comment
  HSC26126  Melica harfordii J. P. Smith, Steve Selva 1970-6-14 3816 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  HSC98816  Melica harfordii Cara Witte 2007-7-25 581 Humboldt Forest Service Road 5N10. Approximately 2.5 miles south from intersection with Forest Service Road 5N41. 1270 Comment
  UC1103756  Melica harfordii Joseph P. Tracy 1919-5-31 5172 Humboldt Willow Creek Northern Coast Ranges, Trinity River (hill slopes at w side of Trinity River) 152 Comment
  UCD87500  Melica harfordii Freed W. Hoffman 1946-5-24 1718 Humboldt Willow Creek. Comment
  UCD87511  Melica harfordii August L. Hormay 1932-5-12 s.n. Humboldt Bull Creek Road. Comment
  HSC75447  Melica spectabilis J. O. Sawyer 1980-7-18 3606 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC34139  Melica spectabilis Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5827 Humboldt Trinity Summit Comment
  RSA183513  Melica subulata D. E. Anderson 1965-5-8 3631 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along highway 299. Comment
  UC1145128  Melica subulata Joseph P. Tracy 1942-6-2 17107 Humboldt Valley of South Yager Creek 762 Comment
  BLMAR755  Melica subulata Jennifer Wheeler 2004-4-30 755 Humboldt King Range, Along Telegraph Ridge 670 Comment
  HSC15010  Melilotus albus Paul Shields Aug 1955 Humboldt 2 mi. N of Weott Comment
  RSA46823  Melilotus albus Doris K. Kildale 1926-4-9 1739 Humboldt Samoa Road Comment
  JEPS65536  Melilotus indicus Lincoln Constance 1934-5-26 662 Humboldt s end of Dyerville Bridge, South Fork of Eel River, Bull Creek Region Dyerville Bridge; Bull Creek Region, South Fork Eel River, Dyerville Bridge 45 Comment
  UC577385  Melissa officinalis Joseph P. Tracy 1925-8-16 7232 Humboldt near the South Fork Trinity River Valley (around farm); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC14245  Mentha canadensis D. E. Anderson 1961-9-9 1789 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon. Comment
  RSA83450  Mentha canadensis F. W. Peirson 1926-7-12 7044 Humboldt Humboldt County: Orick Comment
  UC166030  Mentzelia dispersa Joseph P. Tracy 1908-6 2843 Humboldt n/w slope Buck Mountain; Northern Coast Ranges 1219 Comment
  RSA293124  Micropus californicus Thomas W. Nelson, Jane P. Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  CAS-BOT-BC348376  Micropus californicus var. californicus M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles n. of Garberville Comment
  CAS-BOT-BC348834  Microseris douglasii subsp. douglasii K. L. Chambers 1969-5-25 2923 Humboldt On road to Harris 5.2 mi. E of the freeway overpass at Garberville Comment
  CAS-BOT-BC322677  Microseris laciniata S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3482 Humboldt Highway about one mile west of Bridgeville Comment
  CAS-BOT-BC349240  Microseris nutans Joseph P. Tracy 1930-7-16 8900 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  HSC39233  Microseris nutans D. E. Anderson, J. P. Smith 1971-7-6 - 1275 Humboldt Horse Mtn. Comment
  UC582708  Mimulus arvensis H. E. Parks and Joseph P. Tracy 1931-5-9 12541 Humboldt near Miranda 60 Comment
  BLMAR194  Mimulus aurantiacus Donald Hazlett 1994-6-7 194 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC20692  Mimulus aurantiacus var. aurantiacus D. E. Anderson 1961-8-25 1755 Humboldt 1.5 miles S of Trinidad. overlooking beach Comment
  JEPS15187  Mimulus aurantiacus var. aurantiacus G. T. Nordstrom July 1937 1437 Humboldt 1 1/2 mi sw Orick; Orick Quadrangle Comment
  UC722294  Mimulus aurantiacus var. aurantiacus C. L. Hitchcock, J. S. Martin 1939-7-14 5439 Humboldt Shelter Cove Comment
  UCSB10373  Mimulus aurantiacus var. aurantiacus Parks, H.; Parks, S. 1951-6-1 Humboldt Along bay shore near landing, Trinidad Comment
  HSC97174  Mimulus breweri Yun Chan, Renee Meyer, Sophary Yun 2007-6-13 9 Humboldt 1 mi. east of Hwy. 299 on Forest Service Rd. NF1; Grouse Mountain Meadow 1585 Comment
  UC615326  Mimulus cardinalis Beryl O. Schreiber 1932-7-11 364 Humboldt road s Garberville Comment
  UC1196791  Mimulus douglasii Joseph P. Tracy 1922-5-29 6079 Humboldt head South Yager Creek; Northern Coast Ranges 762 Comment
  UC1196792  Mimulus douglasii Joseph P. Tracy 1927-4-10 7892 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  RSA244981  Mimulus guttatus Jerry Parker 1968-11-11 237 Humboldt Clam Beach. Bottom of Patrick Creek. Comment
  RSA555245  Mimulus guttatus Robert F. Thorne, Percy C. Everett 1965-8-9 35317 Humboldt Clam Beach County Park: along highway. 3 Comment
  UC1063548  Mimulus inodorus H. L. Person 1932-8-1 Humboldt Korbel Eureka Quadrangle Comment
  UC582480  Mimulus inodorus Joseph P. Tracy 1923-9-16 6551 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC1196806  Mimulus kelloggii Joseph P. Tracy 1947-4-20 17671 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC36787  Mimulus moschatus Thomas W. Nelson, Jane Nelson, James Nelson 1975-7-20 2055 Humboldt Along Forest Service Rd. 2S08 to Pine Mountain Comment
  UC179950  Mimulus nasutus Joseph P. Tracy 1914-5-14 4457 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UC582706  Mimulus nasutus Joseph P. Tracy 1927-3-27 7850 Humboldt near South Fork; Trinity River Valley 182 Comment
  CAS-BOT-BC388628  Minuartia douglasii Joseph P. Tracy 1941-6-15 16915 Humboldt Panther Gap, on the Bull Creek - Mattole Road 762 Comment
  CAS-BOT-BC388630  Minuartia douglasii Carl B. Wolf 1937-6-14 8822 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  RSA21094  Minuartia douglasii C. B. Wolf 1937-6-14 8822 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC4059  Minuartia douglasii D. E. Anderson 1962-7-14 2262 Humboldt Comment
  HSC40009  Minuartia nuttallii subsp. gregaria Thomas W. Nelson, Jane P. Nelson 1976-7-1 2905 Humboldt Along ridge N of Bear Creek. 1463 Comment
  HSC4063  Minuartia pusilla D. E. Anderson 1963-5-19 2469 Humboldt Kneeland Area Comment
  HSC76262  Mitella trifida Teresa Prendusi 1981-7-21 270 Humboldt Near Whiteys Peak 1646 Comment
  HSC97645  Moehringia macrophylla C. Witte 2007-5-17 27 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  HSC56468  Monardella glauca Griswold, Butler 1979-7-12 7278 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC73745  Monardella odoratissima subsp. pallida M. A. Baker 1980-7-19 2989 Humboldt Near Bret Hole. 1814 Comment
  UC1239675  Monardella odoratissima subsp. pallida Joseph P. Tracy 1942-9-6 17310 Humboldt South Fork Mountain, near McKay Camp. 1676 Comment
  HSC14282  Monardella villosa Paul Shields Jul 1955 Humboldt 3 mi. S of Myers Flat Comment
  UC162959  Monardella villosa subsp. villosa Joseph P. Tracy 1911-7-9 3476 Humboldt Near Willow Creek west side of river; Northern Coast Ranges, Trinity River 182 Comment
  UC577342  Monardella villosa subsp. villosa Joseph P. Tracy 1937-7-11 15428 Humboldt Vicinity Garberville 121 Comment
  UC203967  Monardella villosa subsp. villosa Joseph P. Tracy 1918-7-2 4984 Humboldt Mattole Valley, mouth of Honey Dew Creek; Northern Coast Ranges 152 Comment
  SEINET4173669 Image available Monardella villosa var. glabella Joseph P. Tracy 1947-1 17782 Humboldt Trinity Summit; ridge top one mile west of Mud Springs, in serpentine formation 1158 Comment
  JEPS13817  Moneses uniflora Joseph P. Tracy 1926-5-22 7515 Humboldt Northern Coast Ranges, Prairie Creek Prairie Creek; Northern Coast Ranges, Prairie Creek 152 Comment
  UC21673  Monotropa hypopitys Harley P. Chandler Jun 1901 1536 Humboldt Klamath River 426 Comment
  CAS-BOT-BC444803  Montia diffusa Joseph P. Tracy 1937-6-27 15379 Humboldt Four-Mile Creek (west of mouth of South Fork of Trinity). 670 Comment
  HSC32127  Montia fontana D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5587 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC36356  Montia fontana J. P. Smith 1976-2-21 8507 Humboldt Tish Tang Campground Comment
  UC161050  Montia fontana Joseph P. Tracy 1909-5-2 2955 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  JEPS109237  Montia howellii Stephanie Puentes 2008-4-23 Humboldt Vicinity Larabee Valley, along Horse Creek about 1 mile upstream from Hwy 36. Comment
  UC198599  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  UC162970  Montia parvifolia Joseph P. Tracy 1908-6 2708 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  UC524121  Montia parvifolia I. L. Wiggins 1932-7-7 5879 Humboldt near Samoa Comment
  CAS-BOT-BC445156  Montia parvifolia Doris K. Kildale 1925-6-14 671 Humboldt Yager Creek near mouth Comment
  UC1561278  Montia parvifolia Barbara Ertter with Thomas J. Delendick 1987-5-16 6935 Humboldt 3 mi e of Berry Summit (on Hwy 299, 20 air mi e of Arcata, on s side of road above Willow Creek) 800 Comment
  HSC16101  Morella californica J. W. Johnson 1961-8-17 1045 Humboldt Edge of pond near barn, Lanphere Farm, Samoa Comment
  HSC16103  Morella californica J. W. Johnson 1961-11-27 1431 Humboldt Woods along the trail of the Hunt Farm, Samoa Comment
  HSC40948  Morella californica Linda M. Barker 1976-6-1 1542 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  UCD110276  Morella californica Linda M. Barker 1976-6-1 1542 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC526747  Muhlenbergia filiformis Joseph P. Tracy 1932-7-14 10544 Humboldt wet meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  JEPS30068  Myrica californica Joseph P. Tracy 1931-4-12 9332 Humboldt Dows Prairie Northern Coast Ranges, Dows Prairie 60 Comment
  RSA46887  Myrica californica Doris K. Kildale 1926-6-18 2393 Humboldt Gold Bluffs. Comment
  SEINET3155577  Myrica californica J. W. Johnson 1961-11-27 1431 Humboldt Arcata; along the trail on the Hunt Farm, Samoa Peninsula. Comment
  HSC77872  Myriophyllum sibiricum Andy Gordus 1978-1 Humboldt N side of Hwy. 299, near Essex Rd. Comment
  HSC77912  Myriophyllum spicatum Bruce Hulberg 1977-10-23 771023 .17 Humboldt Fish Lake Comment
  UC181244  Nassella pulchra Joseph P. Tracy 1914-5-14 4448 Humboldt Fort Seward Northern Coast Ranges (slopes) 121 Comment
  UC526767  Nassella pulchra Joseph P. Tracy 1927-5-8 7963 Humboldt slopes facing South Fork of Eel River; Northern Coast Ranges, Phillipsville 121 Comment
  HSC56058  Navarretia divaricata G. L. Clifton, Griswold 1979-7-31 11693 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC75514  Navarretia divaricata J. O. Sawyer, R. J. Cole 1977-7-3 3012 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  JEPS70294  Navarretia divaricata Joseph P. Tracy 1932-7-11 10395 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1198597  Navarretia divaricata Joseph P. Tracy 1926-6-27 7689 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  UC908378  Navarretia divaricata subsp. vividior Joseph P. Tracy Jul 16 1930-Jul 19 1930 9065 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC582694  Navarretia intertexta Joseph P. Tracy 1937-6-26 15363 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS70337  Navarretia intertexta W. L. Jepson 1902-6-25 1943 Humboldt Green Point Ranch Redwood Creek Comment
  UC1222713  Navarretia intertexta subsp. intertexta Joseph P. Tracy 1950-6-25 18899 Humboldt 3 mi s Burr Valley (near the Sprosten Place, on the road to the Albee Place) Comment
  RSA67625  Navarretia mellita P. A. Munz 1951-7-15 16545 Humboldt Ca. 3 mi. N of Willow Creek 137 Comment
  HSC43175  Navarretia squarrosa R. Sutherland 1976-8-13 16 .13876 Humboldt Redwood Creek, Whittemore Grove. 87 Comment
  HSC100628  Neillia opulifolia Carl C. Marshall Apr 1885 52 Humboldt Streams etc. near coast. Comment
  HSC99204  Nemophila heterophylla D. E. Anderson 1965-5-8 3650 Humboldt About 3 mi. N of Willow Creek along Rd. on E side of Trinity River Comment
  UC249522  Nemophila heterophylla Joseph P. Tracy 1922-4-30 5987 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC7214  Nemophila macrocarpa William Wightman Price 1890-7-1 s.n. Humboldt Jarnagan Comment
  SBBG6129  Nemophila menziesii var. atomaria H. and M. Dearing 1939-4-24 3424 Humboldt near Dyerville Comment
  CAS-BOT-BC219407  Nemophila parviflora M. S. Jussel 1931-5-2 92 Humboldt Sylvandale, 8 miles N. of Garberville Comment
  HSC58023  Nemophila parviflora G. L. Clifton 1979-7-31 11829 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC6967  Noccaea fendleri subsp. californica Paul Shields May 1955 Humboldt Kneeland Comment
  HSC74643  Noccaea fendleri subsp. glauca M. A. Baker 1980-5-18 1365 Humboldt Near Black Mtn. 792 Comment
  HSC34230  Notholithocarpus densiflorus var. densiflorus Linda M. Barker 1974-5-11 176 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  HSC98717  Notholithocarpus densiflorus var. echinoides Cara Witte 2007-8-9 644 Humboldt Along Forest Service Road 5N10. 2 miles east of intersection with National Forest 1. 1334 Comment
  HSC99062  Notholithocarpus densiflorus var. echinoides Cara Witte 2008-6-18 746 Humboldt Horse Mountain Botanical Area. Approximately 1 mile east of junction 6N36 and 6N36A. 1394 Comment
  RSA0013605  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-14 9353 Humboldt Town of Blue Lake. 15 Comment
  HSC59715  Nuttallanthus texanus Clark L. Miller 1979-5-9 1110 Humboldt Samoa Dunes off Samoa Blvd. Comment
  UC582473  Nuttallanthus texanus Joseph P. Tracy 1928-5-6 8431 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CHSC35519  Oemleria cerasiformis Thomas Nelson 1976-3-22 2276 Humboldt On hillside beside Eureka Muni. Golf Course. Comment
  UC1198784  Oemleria cerasiformis Joseph P. Tracy 1921-3-13 5420 Humboldt Alton; Northern Coast Region 30 Comment
  UC1197137  Oenanthe sarmentosa Joseph P. Tracy 1927-7-17 8265 Humboldt Butler Valley 152 Comment
  HSC96500  Oenanthe sarmentosa Gordon Leppig 1998-8-23 1075 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA46821  Oenanthe sarmentosa Doris K. Kildale 1925-7-28 1094 Humboldt [Unspecified] Comment
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Mar 22 2014
  UC642334  Oenanthe sarmentosa Joseph P. Tracy 1936-8-17 15149 Humboldt near Field's Landing 6 Comment
  SEINET10453198  Oenothera hookeri subsp. montereyensis Mary Susan Taylor 1982-10-24 Taylor 5186 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  CDA38173  Oenothera villosa subsp. strigosa E. C. Whitney 1968-6-26 s.n. Humboldt 1440 Carson Woods Road. 0 Comment
  CDA38174  Oenothera villosa subsp. strigosa E. C. Whitney 1966-8-3 s.n. Humboldt Orleans; Ferris Property. 0 Comment
  UC1196944  Oenothera wolfii Joseph P. Tracy 1927-7-24 8302 Humboldt 3 mi s point of cape (sw slopes fronting ocean); Northern Coast Ranges, Cape Mendocino 3 Comment
  HSC16681  Orobanche californica subsp. californica H. E. Parks, S. T. Parks 1930-9-14 782 Humboldt Big Lagoon Comment
  HSC16683  Orobanche californica subsp. californica D. E. Anderson 1965-10-25 4159 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  HSC16684  Orobanche californica subsp. californica Jerry Parker 1968-10-26 205 Humboldt Big Lagoon, dredged sand-spit opposite Sphagnum bog. Comment
  SEINET200762  Orogenia fusiformis Joseph P. Tracy 1942-6-23 17252 Humboldt Near top west of Water-Dog Lakes Trinity Summit. 1829 Comment
  HSC54740  Orthilia secunda G. L. Clifton, Griswold 1979-7-26 10203 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  HSC21583  Osmorhiza berteroi R. D. Zortman 1963-5-15 49 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  HSC56239  Osmorhiza berteroi Overton 1979-8-1 12330 Humboldt Near Mill Creek, close to the town of Hoopa 1341 Comment
  BLMAR209  Osmorhiza berteroi Jennifer Anthony-Wheeler 1996-7-9 209 Humboldt Pilot ridge, growing throughout shady understory Comment
  HSC21584  Osmorhiza berteroi D. E. Anderson 1961-8-11 1724 Humboldt E of Humboldt State College campus. 30 Comment
  HSC65513  Osmorhiza occidentalis M. A. Baker 1980-6-8 1907 Humboldt Near Buck Flat. 1554 Comment
  RSA24188  Oxalis oregana Carl B. Wolf 1941-3-2 9986 Humboldt N Coast Range. Bull Creek-Petrolia Road. 12 miles W of Redwood Highway. 457 Comment
  SEINET3347657 Image available Oxalis oregana A. A. Heller 1923-7-8 13770 Humboldt Near Pepperwood Comment
  HSC79477  Oxalis oregana Kenneth Clark 1980-3-23 531 Humboldt Alluvial terrace of S fork Dead Man's Gulch. 53 Comment
  SEINET12183670  Oxalis oregana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -290 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UC56731  Oxalis oregana Harley P. Chandler May, 1901 1160 Humboldt North Coast Ranges 30 Comment
  HSC16715  Oxalis pes-caprae W. F. Nickel 1965-5-15 Humboldt W side of College Elementary School, H.S.C. Campus Comment
  UC275338  Oxalis trilliifolia Joseph P. Tracy 1923-6-24 6362 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA152617  Panicum acuminatum var. acuminatum Joseph P. Tracy 1918-7-5 5014 Humboldt White Thorn Valley 305 Comment
  UC1103781  Panicum acuminatum var. acuminatum Joseph P. Tracy 1927-5-14 8003 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley nr South Fork 182 Comment
  UC196969  Panicum acuminatum var. acuminatum Joseph P. Tracy 1915-6-6 4644 Humboldt at Eureka Eureka; Northern Coast Region, at Eureka 0 Comment
  UC187238  Panicum capillare Joseph P. Tracy 1908-6 2929 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC13259  Parapholis incurva D. E. Anderson 1965-6-10 3786 Humboldt E part of Eureka. Comment
  HSC37849  Parentucellia viscosa Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  HSC95379  Parentucellia viscosa Andrea Pickart 2002-8-7 195 Humboldt Arcata Bottoms, along Lanphere Rd. 20 Comment
  RSA181631  Parentucellia viscosa Doris K. Niles 1950-6-1 7 Humboldt Island in Eel River, Niles field. Comment
  POM126123  Paspalum distichum Joseph P. Tracy, H. E. Parks 1924-8-3 6779 Humboldt Big Lagoon 6 Comment
  RSA249521  Paspalum distichum R. F. Thorne 1965-9-19 35459 -b Humboldt Freshwater Lagoon S. of Orick 3 Comment
  UC249517  Pectocarya pusilla Joseph P. Tracy 1922-4-30 5993 Humboldt near Willow Creek; Nothern Coast Ranges, Trinity River Valley 152 Comment
  UC169090  Pedicularis densiflora Mrs. M. H. Manning 1902-2 Humboldt near Hupa Comment
  SEINET10548991  Pedicularis densiflora subsp. densiflora Jones 1985-4-20 Jones 21 A Humboldt T34n,r6e,sec.21. Burnt ranch campground, shasta-trinity ntl. Froest. Found at Entrance to campground 433 Comment
  HSC99452  Pedicularis groenlandica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 102 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
  HSC55334  Pedicularis racemosa Terry Griswold, Marvin Butler 1979-7-12 7178 Humboldt Near Groves Prairie, close to the town of Willow Creek 1256 Comment
  POM301297  Pedicularis racemosa Joseph P. Tracy 1948-9-5 18170 Humboldt Happy Camp Mountain. In Trinity Summit Range, northeast of Hawkins Bar. 1280 Comment
  JEPS7210  Penstemon anguineus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8918 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC55839  Penstemon deustus G. L. Clifton, Terry Griswold 1979-7-25 10786 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  RSA412524  Penstemon deustus H. M. Pollard 1948-7-19 s.n. Humboldt River road near Fleet Ranch, near Orleans. Comment
  HSC49982  Penstemon laetus subsp. sagittatus M. A. Baker 1979-6-7 782 Humboldt N bank of road to Snow Mtn. 610 Comment
  JEPS11630  Penstemon laetus var. sagittatus Joseph P. Tracy 1937-7-2 15395 A Humboldt on ridge 2 mi e Groves Prairie; Trinity Summit 1524 Comment
  SEINET3360831 Image available Penstemon newberryi subsp. berryi Joseph P. Tracy 16-19 July 1930 8953 Humboldt South Fork Mountain; along summit near Blake lookout. 1707 Comment
  UC577358  Penstemon newberryi var. berryi Joseph P. Tracy 1932-7-12 10472 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  HSC59451  Penstemon newberryi var. berryi Richard Runyon 1979-6-27 40 Humboldt NW of Trinity Summit Station, W of ridge trail 1829 Comment
  HSC44827  Penstemon purpusii Thomas W. Nelson, Jane Nelson 1977-7-4 3600 Humboldt Along old trail above Alder Springs 1555 Comment
  CHSC57403  Pentagramma triangularis subsp. triangularis L. P. Janeway 1984-5-6 757 Humboldt Above Ishi Pishi Road, 1/2 mi northeast of Orleans. 137 Comment
  UC1197117  Perideridia parishii subsp. latifolia Doris Kildale Aug. 1925 Humboldt Trinity Summit 1524 Comment
  HSC17527  Persicaria maculosa Lincoln Constance 1934-6-12 861 Humboldt N bank of S Fork Eel River, Bull Creek Rd. Comment
  HSC45468  Persicaria wallichii Thomas W. Nelson, M. Alcasas 1978-10-10 4555 Humboldt Off Hwy. 101 right-of-way N of HSU exit Comment
  HSC6053  Petasites frigidus var. palmatus V. G. Vieira 1963-3-30 38 Humboldt Mad River Comment
  HSC13680  Phacelia bolanderi W. Lanphere 1937-5-25 Humboldt Dyerville Comment
  UC582693  Phacelia bolanderi Joseph P. Tracy 1937-6-20 15341 Humboldt 10 mi up stream from mouth; Bear River 152 Comment
  SEINET3119233 Image available Phacelia bolanderi Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15225 Humboldt Bolling Grove State Park. Comment
  POM127633  Phacelia heterophylla subsp. virgata H. P. Chandler 1901-05 1257 Humboldt Redwood belt. 152 Comment
  UC562572  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1935-7-30 14385 Humboldt near top Salmon Summit 2103 Comment
  JEPS1200  Phacelia malvifolia Joseph P. Tracy 1934-6-10 13212 Humboldt DRY LAGOON (Along coast in front South End of Stone Lagoon.) Comment
  JEPS91346  Phacelia mutabilis Dean W. Taylor 1991-8-15 12299 Humboldt ridge 1 mile West of Horse Mountain, 1493 Comment
  JEPS55962  Phacelia mutabilis John Thomas Howell 1937-7-31 13715 Humboldt Boise Creek Comment
  JEPS2230  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1936-6-9 14876 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  JEPS81028  Phacelia nemoralis subsp. oregonensis James P. Smith 1973-5-26 6871 Humboldt near Rio Dell (bluffs along river); Eel River, Scotia Bluffs Comment
  HSC58024  Phacelia procera G. L. Clifton 1979-7-31 11831 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 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
  CAS-BOT-BC258866  Phalaris aquatica Joseph P. Tracy 1934-6-21 13241 Humboldt Around Humboldt Bay. Along highway across Salmon Creek flats 6 Comment
  UCD88519  Phalaris arundinacea J. W. Logan 1926-6-2 2 Humboldt Ferndale. Rusk Ranch. Comment
  CAS-BOT-BC76570  Philadelphus lewisii Doris K. Kildale 1927-8-7 3864 Humboldt Kneeland Prairie 762 Comment
  JEPS49603  Philadelphus lewisii Joseph P. Tracy 1926-6-27 7696 Humboldt Horse Mountain Northern Coast Ranges 1066 Comment
  SEINET12219857  Philadelphus lewisii subsp. californicus J. P. Tracy 1950-1 18853 Humboldt along Redwood Creek, 2 mi W of Briceland Comment
  HSC58654  Phleum alpinum G. L. Clifton, Griswold 1979-7-31 11726 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC183739  Phleum pratense Joseph P. Tracy 1912-7-27 3888 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC55333  Phlox adsurgens Griswold, Butler 1979-7-12 7177 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  RSA63693  Phlox adsurgens Milo S. Baker 1947-8-10 11944 Humboldt 15 miles northeast of Hoopa near end of forest road 1372 Comment
  UC1212579  Phlox adsurgens Francia Chisaki and Helen Sharsmith 1959-8-22 4755 Humboldt Happy Camp, just over line from Trinity County Inner North Coast Ranges 914 Comment
  HSC44351  Phlox diffusa Brad Klipfel 1975-7-11 698 Humboldt Horse Mtn. Comment
  JEPS69961  Phlox diffusa Joseph P. Tracy 1933-7-11 12657 Humboldt Horse Mountain 1432 Comment
  HSC45583  Phlox diffusa Diane L. Reed 1978-5-27 123 Humboldt Horse Mtn., Titlow Hill Rd., 3.4 mi. from junction with S.R. 299 Comment
  UC1178966  Phlox douglasii subsp. rigida Joseph P. Tracy 1933-7-11 12657 Humboldt Horse Mountain 1432 Comment
  HSC62687  Phoradendron serotinum subsp. macrophyllum Michelle Stevens 1979-5-12 146 Humboldt Just before Camp Bauer in Korbel along the N Fork of the Mad River Comment
  HSC15928  Phoradendron serotinum subsp. tomentosum M. C. Hartman 1963-5-11 35 Humboldt Berry summit Comment
  SEINET11763301  Phyllospadix torreyi H. E. Parks 1933-1 s.n. Humboldt Spruce Cove, Trinidad Comment
  CAS-BOT-BC140582  Physocarpus capitatus Carl B. Wolf 1927-8-30 1227 Humboldt 2 mi. s. of Petrolia on the [Matole] Mattole River near point where road crosses river Comment
  CHSC1563  Physocarpus capitatus A. Small 1954-6-4 Humboldt Coastal near Capetown. Comment
  JEPS108629  Physocarpus capitatus W. Roderick Humboldt 1.3 mi S of Indianola Comment
  UCD134309  Picea sitchensis Linda M. Barker 1976-4-13 1376 Humboldt Lanphere-Christensen Dunes, coastal forest and dunes 3 miles west of Arcata. Comment
  SD42286  Pinus attenuata Carl B. Wolf 1937-8-13 Humboldt North Coast Range, 8 miles east of Hoop Valley on new road towards Trinity Summit 1220 Comment
  MACF019659  Pinus contorta E. R. Blakley 1966-8-17 6799 Humboldt Patrick's Point 5 mi. North of Trinidad. 60 Comment
  UC1585370  Pinus contorta subsp. contorta R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 15 Humboldt w of Eureka (0.5 km s of Hwy. 255 on New Navy Base Rd. on North Spit of Samoa Peninsula, unstabilized dune system); North Spit Samoa Peninsula 5 Comment
  UCR32094  Pinus jeffreyi David J. Keil 1983-7-2 17315 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  HSC55156  Pinus monticola Gilbert Muth 1979-8-1 12109 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  UC502915  Pinus monticola Joseph P. Tracy 1927-6-12 8134 Humboldt Horse Mountain Northn Coast Ranges, Horse Mountain (in open forest of Jeffrey Pine) 1524 Comment
  UC1196914  Pinus muricata unknown 1935-7-1 Humboldt Moonstone Beach settlement Moonstone Beach (0.5 mi or so back from ocean) 60 Comment
  UC55659  Pinus ponderosa P. E. Goddard 1901-7-12 66 Humboldt Hupa Comment
  UC14936  Piperia elegans J. P. Tracy 1901-8-7 1253 Humboldt opposite Eureka; Samoa Comment
  JEPS64429  Piperia elegans W. L. Jepson 1932-7-25 16399 Humboldt Bull Creek South Fork Eel River Comment
  CDA13740  Piperia transversa G. F. Hrusa, D. Willis non T. D. Wilfred 1997-8-19 14089 Humboldt Trinity Mountains; above Van Duzen River on N side of Hwy 36 at Humboldt Co. MP 21.7, W of Bridgeville. Comment
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Dec 20 2007
  UC1152007  Piptatherum miliaceum Joseph P. Tracy 1951-6-21 19518 Humboldt experimental grass garden of Albert H. Murphy Hydesville Comment
  HSC44656  Pityopus californicus M. A. Baker 1978-7-19 623 Humboldt Bulk Collection 136 Comment
  HSC48733  Pityopus californicus J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 519 Humboldt Off FS 10N05. SE slope of Hopkins Butte. Bulk Collection 181 1037 Comment
  UC1197758  Pityopus californicus Joseph P. Tracy 1925-7-5 7184 Humboldt High Prairie on Bald Mountain North Coast Ranges 1066 Comment
  CAS-BOT-BC169838  Plagiobothrys Volney Rattan 1882-6-1 s.n. Humboldt unspecified 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
  UC1222219  Plagiobothrys reticulatus Joseph P. Tracy 1942-6-12 17112 Humboldt Prairie Creek at the prairie at Elk Grove; Prairie Creek, Elk Grove Comment
  LA204802  Plagiobothrys scopulorum Joseph P. Tracy; 1935-5-25 13844 Humboldt Fort Seward 106 Comment
  SEINET12275868  Plagiobothrys scouleri J. P. Tracy 1949-1 18322 Humboldt Cameron Hill on Kneeland Road Comment
  JEPS68130  Plagiobothrys tenellus Joseph P. Tracy 1921-4-24 5649 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  UCD124428  Plantago erecta D. E. Breedlove 1962-6-7 3046 Humboldt 1.5 miles south of Samoa on peninsula on west side of Humboldt Bay. 106 Comment
  UC198604  Plantago erecta Joseph P. Tracy 1917-5-30 4793 Humboldt mouth of Little River North Coast Ranges, Little River 6 Comment
  HSC62991  Plantago lanceolata David Wheeler 1979-4-23 83 Humboldt N end of Heindon Rd. at turn-around Comment
  UC154018  Plantago major J. P. Tracy 1910-10-1 3167 Humboldt immediate vicinity Eureka 0 Comment
  HSC16858  Plantago maritima D. E. Anderson 1961-9-13 1818 Humboldt Comment
  RSA43877  Plantago purshii var. oblonga H. M. Pollard 1948-8-3 s.n. Humboldt New Orleans. Comment
  UC154021  Plantago subnuda J. P. Tracy 1906-6-17 2493 Humboldt immediate vicinity Eureka 0 Comment
  HSC55142  Platanthera dilatata var. leucostachys G. L. Clifton, Griswold 1979-8-1 12029 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  RSA246764  Platanthera leucostachys Robert F. Thorne, Percy C. Everett 1965-8-9 35284 Humboldt Big Lagoon. 3 Comment
  HSC70989  Platanthera sparsiflora Gail Newton 1980-7-20 1648 Humboldt Near Bell Swamps 1426 Comment
  RSA12558  Platanthera stricta Carl B. Wolf 1934-7-2 5881 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  CAS-BOT-BC91639  Platystemon californicus Tom Craig 1941-6-29 s.n. Humboldt Samoa, near Eureka. Comment
  CAS-BOT-BC91635  Platystemon californicus Joseph P. Tracy 1932-6-26 10266 Humboldt Northern Coast Region.. Valley of South Yager Creek. 762 Comment
  HSC95538  Platystemon californicus Andrea Pickart 2002-3-14 8 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  JEPS4805  Plectritis brachystemon Joseph P. Tracy 1933-5-20 12250 Humboldt Northern Coast Ranges, Mattole Valley Mattole Valley; Northern Coast Ranges, Mattole Valley 60 Comment
  CHSC10124  Plectritis congesta J. W. Johnson 1962-4-19 1273 Humboldt Miller Farm, Samoa Peninsula. Arcata. Comment
  RSA178587  Plectritis congesta var. congesta Joseph P. Tracy 1950-5-6 18639 Humboldt At my cabin. Trinity River Valley, at Willow Creek. Comment
  HSC10625  Poa annua P. N. Slattery 1963-4-4 28 Humboldt Clam Beach. Comment
  UCD90242  Poa annua Linda M. Barker 1976-4-30 1399 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC10821  Poa confinis Francis Winter 1960-4-30 Humboldt Samoa Peninsula, 6 mi. W of Arcata. Comment
  UC525631  Poa confinis Joseph P. Tracy 1927-6-26 8209 Humboldt Stone Lagoon; North Coast Region 6 Comment
  UCD91030  Poa douglasii subsp. douglasii Linda M. Barker 1976-5-13 1491 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1103795  Poa howellii Joseph P. Tracy 1918-7-5 5035 Humboldt White Thorn Valley; Northern Coast Ranges 304 Comment
  UCD91135  Poa howellii A. H. Murphy 1950-5-10 s.n. Humboldt E. M. Cottrell Ranch, on Roth Road. Comment
  CAS-BOT-BC255848  Poa kelloggii Joseph P. Tracy 1906-5-20 2463 Humboldt Near Eureka, region about Humboldt Bay 152 Comment
  HSC10722  Poa kelloggii E. W. Styskel 1963-4-20 17 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 305 Comment
  LA12560  Poa macrantha H. S. Yates; 1936-6-18 5726 Humboldt near mouth of Little River 4 Comment
  UCD91549  Poa macrantha Joseph P. Tracy 1917-5-30 4799 Humboldt Ocean Beach at Little River. Comment
  HSC10816  Poa pratensis J. W. Johnson 1961-6-12 1425 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  HSC39179  Poa pratensis D. E. Anderson, J. P. Smith 1971-6-28 - 1222 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UCD91934  Poa pratensis A. H. Murphy 1947-6-10 s.n. Humboldt Fulton's Ranch, Bald Mtn. ca. 7 miles east of Blue Lake. Comment
  HSC97611  Poa pratensis subsp. pratensis Cara Witte 2007-6-4 204 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UCD91730  Poa secunda subsp. secunda A. H. Murphy 1947-4-2 s.n. Humboldt 2 miles S of Blocksburg. Comment
  UCD92045  Poa secunda subsp. secunda Joseph P. Tracy 1936-5-29 14822 Humboldt French Camp Ridge. 1066 Comment
  UC1145116  Poa trivialis Joseph P. Tracy 1943-7-18 17435 Humboldt Big Lagoon 9 Comment
  UC589885  Poa trivialis H. S. Yates 1936-6-16 5682 Humboldt near Bayside; Eureka Quad. 9 Comment
  CAS-BOT-BC232886  Polemonium carneum Carl B. Wolf 1937-6-17 8881 Humboldt Big Lagoon, S side at W of Redwood Highway 6 Comment
  HSC17210  Polemonium carneum J. Wendell Howe 5 May [year missing] Humboldt Big Lagoon Comment
  CDA3403  Polycarpon tetraphyllum Gordon Leppig 2000-12-6 1522 Humboldt 13th and A Streets, Arcata. Comment
  CDA36977  Polycarpon tetraphyllum R. Robison Humboldt Humboldt Lagoons State Park, south of Stone Lagoon day use parking area. 0 Comment
  RSA774713  Polygala californica Thekla Mohr 1918-07 3336 Humboldt Eel River. Comment
  POM209000  Polygala californica Lincoln Constance 1934-5-23 608 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park 366 Comment
  HSC64421  Polygonum aviculare J. P. Smith 1971-10-9 5048 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UCSB30611  Polygonum aviculare Edwards, David 1974-7-30 Humboldt In NW corner of Uniontown Shopping Center at the corner of "F" St. and 7th St., Arcata 18 Comment
  UC1198074  Polygonum bistortoides Joseph P. Tracy 1919-9-18 5242 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC54501  Polygonum douglasii G. L. Clifton, Griswold 1979-7-26 9363 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  RSA466318B  Polygonum douglasii Thomas W. Nelson, James Nelson 1976-7-28 3057 Humboldt Growing on meadow along 2E27 just N of its Jct. 1S07 1524 Comment
  UC672965  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1940-8-25 16707 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC418616  Polygonum majus Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  RSA178533  Polygonum minimum Joseph P. Tracy 1950-8-8 19281 Humboldt On trail betw Box Camp and Croghon Hole. 1677 Comment
  CHSC32964  Polygonum paronychia J. P. Smith; Advanced Taxonomy Class 1971-10-6 4957 Humboldt Dunes at the end of Murray Road in McKinleyville. Comment
  HSC17512  Polygonum paronychia J. W. Johnson 1961-8-17 1041 Humboldt Dune fields of W.M. Lanphere Farm, Samoa Peninsula Comment
  UCSC000204  Polygonum paronychia H. S. Yates 1936-6-16 5656 Humboldt 0.5 mile S.W. of Samoa - Eureka 3 Comment
  UC1713712  Polygonum parryi Joseph P. Tracy 1908-6 2932 Humboldt Buck Mountain Northern Coast Ranges (nw slope, ridge near water) 914 Comment
  UC1225798  Polygonum sachalinense Joseph P. Tracy 1946-8-25 17634 Humboldt roadside 1/2 mi s mouth of Elk River 6 Comment
  RSA53825  Polygonum spergulariiforme H. M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  CAS-BOT-BC71829  Polypodium californicum Joseph P. Tracy 1941-3-26 16835 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC1100  Polypodium californicum Francis Winter 1960-2-28 Humboldt Samoa peninsula, 6 mi. W of Arcata Comment
  HSC1139  Polypodium californicum J. W. Johnson 1962-4-10 1233 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  SEINET3873592  Polypodium californicum Jerry Parker 1968-10-25 186 Humboldt Stable dunes south of Widow White Creek.; 0 Comment
  RSA244982  Polypodium calirhiza D. A. Haskell 1966-4-16 13 Humboldt Coastal strand sand dunes near town of Samoa Comment
  UCD136882  Polypodium glycyrrhiza M. Wiesendanger 1928-4-7 902 Humboldt Redwood Highway, Lane's Redwood Flat, probably the Franklin K. Lane Grove. Comment
  RSA183501  Polypodium glycyrrhiza H. S. Logsdon 1964-5-13 20 Humboldt 4.0 miles northeast of Orick at Boye s Prairie Comment
  UCD136862  Polypodium glycyrrhiza Lincoln Constance 1934-5-31 748 Humboldt South fork Eel River, Bull Creek region. Comment
  CAS-BOT-BC72083  Polypodium scouleri Ira L. Wiggins 1957-6-20 14133 Humboldt East side of highway, Trinidad Comment
  HSC1114  Polypodium scouleri D. E. Anderson 1961-8-25 1754 Humboldt 1.5 mi. S of Trinidad Comment
  HSC1116  Polypodium scouleri Gene S. Van Horn 1962-5-26 33 Humboldt 250 E 17th St., Arcata 61 Comment
  RSA137268  Polypodium scouleri I. L. Wiggins 1957-6-20 14133 Humboldt East side of highway, Trinidad Comment
  HSC10823  Polypogon australis D. E. Anderson 1965-5-8 3656 Humboldt W end of bridge over Trinity River, 0.5 mile S of Willow Creek. Comment
  UCD91383  Polypogon monspeliensis Joseph P. Tracy 1942-6-15 17144 Humboldt Redwood Creek, opposite Redway on South Fork and Eel River. 91 Comment
  UCSC000003  Polypogon monspeliensis H. L. Person 1932-5-11 s.n. Humboldt Near Arcata 15 Comment
  UC1063666  Polystichum munitum H. L. Person 1932-7-10 Humboldt Lindsay Creek; Eureka Quadrangle Comment
  CAS-BOT-BC76661  Polystichum munitum Joseph P. Tracy 1933-7-21 12813 Humboldt Riverside Auto Park on Van Duzer River, 5 miles E of Carlotta. 60 Comment
  HSC56204  Populus trichocarpa G. L. Clifton, Griswold 1979-8-2 12195 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1225789  Populus trichocarpa Joseph P. Tracy 1948-4-11 17970 Humboldt 2 mi e Dyerville (Eel River); Eel River 48 Comment
  HSC59104  Potamogeton natans Clark L. Miller 1979-5-24 6154 Humboldt Clam beach ponds off Hwy. 101 N of McKinleyville Comment
  UC13488  Potamogeton natans W. C. Blasdale 1896-6-3 Humboldt Blue Lake Comment
  HSC17758  Potamogeton nodosus R. L. Jarvis 1962-4-29 35 Humboldt Turner draw, 3 mi. N of Arcata on Hwy. 101 15 Comment
  HSC36293  Potamogeton nodosus James K. Griswold 1974-5-18 Humboldt Westend Rd., across from Humboldt Flakeboard Comment
  HSC62825  Potamogeton nodosus J. M. DiTomaso 1979-4-21 892 Humboldt Next to Hwy. 101 at Crannell Rd. exit between Westhaven and Mckinleyville Comment
  HSC62830  Potentilla anserina subsp. pacifica J. M. DiTomaso 1979-4-21 883 Humboldt Clam Beach Comment
  HSC63026  Potentilla anserina subsp. pacifica J. P. Smith 1971-10-6 4937 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC97614  Potentilla glandulosa subsp. glandulosa Cara Witte 2007-5-31 156 Humboldt Along National Forest Route 1. Near Kinsey Ridge. 1.25 miles north of intersection with 4N09. 1308 Comment
  HSC44544  Potentilla gracilis var. fastigiata Brad Klipfel 1973-7-15 163 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC75938  Potentilla gracilis var. fastigiata Overton, Butler 1979-7-24 9703 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC418977  Potentilla gracilis var. gracilis H. E. Parks June, 1924 Humboldt Kneeland; Bald Hills, Kneeland Comment
  HSC57029  Prosartes hookeri Overton, Butler 1979-7-24 9653 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC72624  Prunella vulgaris subsp. lanceolata J. P. Smith 1977-7-3 9229 Humboldt On Forest Service Road 13N01 to Fish Lake, 3.5 mi. from its junction with Highway 36 488 Comment
  UC1196728  Prunella vulgaris var. lanceolata J. P. Tracy 1900-7-22 903 Humboldt immediate vicinity Eureka 0 Comment
  UC1288489  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-12-29 688 Humboldt on Eel River s Meyer's Flat (Eagle Point); Eel River Comment
  HSC56201  Prunus emarginata Gilbert Muth 1979-8-1 12184 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1780 Comment
  JEPS44944  Prunus emarginata Joseph P. Tracy 1917-5-6 4780 Humboldt at Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC205472  Prunus emarginata Joseph P. Tracy 1919-9-24 5296 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1828 Comment
  UC666846  Prunus emarginata Joseph P. Tracy 1937-7-29 15594 Humboldt South Fork Mountain, near top at Hyampom Trail South Fork Mountain; , Hyampom Trail 1676 Comment
  HSC94127  Prunus laurocerasus Gordon Leppig 2000-4-12 1291 Humboldt Arcata: behind Humboldt State University, W of Fern Lake 49 Comment
  CAS-BOT-BC154737  Prunus virginiana var. demissa H. E. McMinn 1922-8-5 356 Humboldt Along Van [Dusen] Duzen River Comment
  CAS-BOT-BC357271  Pseudognaphalium microcephalum Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC5708  Pseudognaphalium thermale J. P. Tracy 1938-8-14 16111 Humboldt Trinity River Valley at Willow Creek 152 Comment
  CAS-BOT-BC80112  Pseudotsuga menziesii Doris K. Kildale 1928-10-7 6756 Humboldt Trinity River at mouth of Willow Creek Comment
  SEINET11737772  Pseudotsuga menziesii K. S. Erdman 1970-1 4792 Humboldt Redwood National Park near Holter Ridge entrance along Bald Hills Road, SE of Orick Comment
  NY63912  Pseudotsuga menziesii var. menziesii J. P. Tracy 1932-3-19 9789 Humboldt Blue Slide, on Van Duzen River Comment
  UC63998  Pseudotsuga menziesii var. menziesii Mrs. M. H. Manning 1902-3-1 Humboldt Comment
  UCD135129  Pseudotsuga menziesii var. menziesii P. Zinke 1950-8-3 145 Humboldt California Forest and Range Experiment Station. 3 miles south of Harris. Comment
  CAS-BOT-BC361931  Psilocarphus tenellus Doris K. Kildale 1926-6-27 2205 Humboldt Laribee Valley 701 Comment
  HSC100525  Psoralea physodes Carl C. Marshall Jun 1885 11 Humboldt Pilot Creek. Comment
  UCD136174  Pteridium aquilinum var. pubescens K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  SEINET200759  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-6-3 8600 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  CAS-BOT-BC460604  Pyrola aphylla Doris K. Kildale 1927-7-3 3632 Humboldt Willow Creek Flat 152 Comment
  JEPS66559  Pyrola asarifolia Joseph P. Tracy 1936-6-28 15016 Humboldt Bald Mountain at Lake Prairie 1066 Comment
  HSC55263  Pyrola crypta Overton, Butler 1979-8-2 12608 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC99085  Pyrola dentata Cara Witte 2007-6-26 355 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  CAS-BOT-BC62674  Quercus chrysolepis Doris K. Kildale 1927-5-15 3303 Humboldt Petrolia Comment
  HSC54572  Quercus chrysolepis Overton, Butler 1979-7-24 9606 Humboldt Near Titlow Hill, close to the town of Willow Creek. 381 Comment
  JEPS38040  Quercus chrysolepis Lincoln Constance 1934-6-15 885 Humboldt Summit of Grasshopper Peak South Fork Eel River, Bull Creek Region 975 Comment
  POM270213  Quercus chrysolepis Lyman Benson 1928-7-14 519 Humboldt Richardon's Grove of Redwoods, Redwood Highway, south county boundary, Middle N Coast Mt. Range, South Fork of Eel River. 122 Comment
  UC478893  Quercus chrysolepis Marcus E. Jones, A. M. 1931-7-16 28845 Humboldt near Trinity River (Burnt Ranch) Comment
  UC5535  Quercus chrysolepis unknown 1867-6-17 Humboldt Elk Ridge Comment
  HSC73544  Quercus garryana Gail Newton 1980-7-14 1469 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC102567  Quercus sadleriana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1554 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC70635  Quercus sadleriana R. York 1980-5-18 601 Humboldt Near Black Mtn. 792 Comment
  HSC55598  Quercus vacciniifolia Overton, Butler 1979-7-23 9411 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  SEINET3130963  Quercus vacciniifolia Unknown 1948-9-3 1851 Humboldt Horse Mountain, at junction of roads to Grouse Mountain and to Horse Mountain Mine, Six Rivers National Forest 1463 Comment
  UCD47426  Quercus vacciniifolia John M. Tucker 1948-9-3 1851 Humboldt California, Humbolt Co.; Horse Mountain, at junction of roads to Grouse Mountain and to Horse Mountain Mine, Six Rivers National Forest; 1950 Comment
  HSC56056  Ranunculus alismifolius var. hartwegii G. L. Clifton, Griswold 1979-7-31 11674 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC379199  Ranunculus aquatilis var. aquatilis Henry M. Pollard 1946-8-13 s.n. Humboldt pond near Harley place, Orleans region Comment
  HSC45584  Ranunculus californicus Diane L. Reed 1978-4-29 40 Humboldt Trinidad Head Comment
  BLMAR364  Ranunculus californicus Jennifer Anthony-Wheeler 2003-5-21 364 Humboldt South Spit, Disturbed ground on west side 3 Comment
  POM269618  Ranunculus flammula var. ovalis Joseph P. Tracy 1934-7-30 13499 Humboldt Dry Lagoon (Along coast in front of South End of Stone Lagoon.) 3 Comment
  RSA245287  Ranunculus hebecarpus Thomas W. Nelson 1971-5-7 429 Humboldt Beside Hwy 101, 1 miles S of Arcata. Comment
  HSC30324  Ranunculus occidentalis var. occidentalis Dale R. Gradek 1974-4-16 11 Humboldt 7 mi. E of Blue Lake on rd. adjacent to Hwy. 299 305 Comment
  UC1713273  Ranunculus pusillus Joseph P. Tracy 1919-5-31 5177 Humboldt opposite Willow Creek (shores of pond); Northern Coast Regions, Trinity River, Lack Pond 152 Comment
  UCR17461  Ranunculus repens R. S. Woglum 1938-8-29 2036 Humboldt North Coast, grounds of Trinidad State Park, south of Trinidad 38 Comment
  POM311440  Ranunculus repens D. E. Breedlove 1962-6-7 3027 Humboldt [?] miles S of Southern city limits of Eureka of Hwy 101. 3 Comment
  RSA554594  Ranunculus repens Walter Wisura 1993-5-9 4912 Humboldt Hwy 255 W of Arcata. Comment
  HSC18179  Ranunculus repens var. repens Harvey Doerksen 1962-5-8 22 Humboldt 3 mi. W of Blue Lake, fork of Lindsay Creek and Mad River Comment
  HSC39445  Ranunculus repens var. repens Linda M. Barker 1976-6-1 1555 Humboldt 3 mi. W of Arcata Comment
  CHSC35558  Ranunculus sardous Thomas Nelson; Doris Niles 1979-5-19 4696 Humboldt Mouth of Eel River at Crab Park. North of County Park. Comment
  UC502929  Ranunculus uncinatus Joseph P. Tracy 1932-7-10 10394 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC64070  Raphanus sativus J. P. Smith 1971-10-6 4965 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC28225  Raphanus sativus Thomas W. Nelson 1971-4-12 374 Humboldt Hookton Rd. at the junction of Copenhagen Rd. Comment
  RSA34319  Raphanus sativus Doris K. Kildale 1926-5-7 1506 Humboldt Bucksport. Eureka. Comment
  UC592714  Rhamnus californica subsp. californica Carl B. Wolf 1934-6-30 Humboldt back of Shelter Cove 60 Comment
  RSA1465  Rhamnus purshiana E. R. Johnson 1929-08 1410 Humboldt Arcata Redwood Park. 76 Comment
  UC1197988  Rhamnus purshiana Joseph P. Tracy 1935-7-25 14238 Humboldt lower end of Brett Hole Trinity Summit, Brett Hole 1584 Comment
  UC615053  Rhamnus purshiana Beryl O. Schreiber 1934-6-5 1141 Humboldt Gray's Resort Redwood Creek Comment
  CAS-BOT-BC56610  Rhododendron macrophyllum Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  HSC91897  Rhododendron macrophyllum E. Mackey 1987-5-19 Humboldt Patrick's Point State Park Comment
  UC1121079  Rhododendron occidentale H. L. Person 1930-6-20 Humboldt Bayside Road e of Arcata; Bayside Road Comment
  UC1543140  Rhododendron occidentale Frank Gould, Kay Beach 1940-5-5 1041 Humboldt along coast near Trinidad Comment
  HSC69697  Rhododendron occidentale var. paludosum R. Kalal 1980-6-8 16 Humboldt Azalea State Reserve 52 Comment
  HSC7892  Rhododendron occidentale var. paludosum Francis Winter 1960-5-6 Humboldt Across from Azalea State Park Entrance Comment
  RSA0063214  Rhododendron occidentale var. paludosum R. F. Thorne, Percy C. Everett 1965-8-7 35189 Humboldt Big Lagoon; at edge of bog at south end of lagoon. 2 Comment
  CAS-BOT-BC433135  Ribes Doris K. Kildale; L. B. Kildale 1930-5-12 9558 Humboldt McClellan Hill near Bridgeville 609 Comment
  POM184793  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt Trinity Summit. 1524 Comment
  UC667066  Ribes binominatum Joseph P. Tracy 1933-8-30 13058 Humboldt on e slope Grouse Mountain (near lookout station) 1615 Comment
  UCSB24357  Ribes binominatum Tracy, Joseph 1933-7-11 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC92885  Ribes bracteosum S. Green; R. Jacquet; H. Ross 1997-4-25 31 Humboldt Highway 299 at Redwood Creek Road, intersection. 609 Comment
  UC615054  Ribes bracteosum Beryl O. Schreiber 1934-6-5 1140 Humboldt road to Redding (Gray's Resort); Redwood Creek Comment
  OBI14064  Ribes divaricatum var. klamathense Joseph P. Tracy 1941-3-26 16813 Humboldt Lack Pond; in Trinity River Valley, opposite mouth of Willow Creek Comment
  UC902061  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1943-3-21 17412 Humboldt Alton 30 Comment
  UC70556  Ribes inerme var. klamathense J. Burtt Davy 1899-6-26 5867 Humboldt Hoopa Valley North Coast Ranges Comment
  CAS-BOT-BC168876  Ribes lacustre Joseph P. Tracy 1933-7-16 12784 Humboldt South Fork Mountain, openings in fir forest near McKay Camp 1676 Comment
  HSC102026  Ribes lacustre M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 927 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  CAS-BOT-BC176807  Ribes laxiflorum Doris K. Kildale 1927-4-10 3080 Humboldt Prairie Creek, north of Orick Comment
  UC11582  Ribes laxiflorum Harley P. Chandler May, 1901 1202 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC173363  Ribes lobbii L. R. Abrams 1918-6-14 7091 Humboldt Three Creeks Comment
  HSC98554  Ribes lobbii Cara Witte 2008-6-18 742 Humboldt 2 miles north of the intersection between National Forest 1 and Friday Ridge Road/ 6N08 1580 Comment
  UC902101  Ribes lobbii Joseph P. Tracy 1942-6-23 17234 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC74205  Ribes marshallii M. A. Baker 1980-7-19 3031 Humboldt Near Bret Hole. 1814 Comment
  JEPS49228  Ribes menziesii Jos. P. Tracy 1918-4-7 4866 Humboldt Luffenholz Creek 30 Comment
  UC1198935  Ribes menziesii Joseph P. Tracy 1913-3-9 4021 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC552240  Ribes menziesii Joseph P. Tracy 1935-3-3 13713 Humboldt Dow's Prairie 60 Comment
  UC902103  Ribes menziesii Joseph P. Tracy 1948-2-22 17950 Humboldt Hydesville 91 Comment
  UC1198945  Ribes roezlii Joseph P. Tracy 1932-3-19 9788 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC902057  Ribes roezlii Joseph P. Tracy 1942-3-8 17066 Humboldt Miranda South Fork of Eel River 121 Comment
  CAS-BOT-BC198900  Ribes roezlii var. cruentum L. R. Abrams 1918-6-16 7198 Humboldt Willows Creek Comment
  JEPS49455  Ribes roezlii var. cruentum P. E. Goddard 1901-7 83 1/2 Humboldt Hupa Comment
  UC249624  Ribes roezlii var. cruentum Joseph P. Tracy 1922-4-30 6041 Humboldt Three Creeks, along road between Three Creeks and mouth of Willow Creek Northern Coast Ranges 670 Comment
  UC667068  Ribes roezlii var. cruentum Joseph P. Tracy 1937-3-27 15240 Humboldt near Blue Lake; Mad River 15 Comment
  UC902104  Ribes roezlii var. cruentum Joseph P. Tracy 1942-4-4 17069 Humboldt e North Fork Mad River (near summit of Trinity Highway); Bald Mountain 640 Comment
  RSA0024584  Ribes roezlii var. cruentum H. M. Pollard 1948-8-9 s.n. Humboldt Camp Creek, near Orleans. Comment
  HSC100494  Ribes sanguineum Carl C. Marshall Apr 1885 135 Humboldt Near the coast everywhere. Comment
  HSC20336  Ribes sanguineum E. W. Styskel 1963-3-3 2 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  UC1198915 Image available Ribes sanguineum Joseph P. Tracy 1933-8-30 13059 Humboldt near Rnager's Lookout; Grouse Mountain 1615 Comment
  HSC20338  Ribes sanguineum Eugene Andreuccetti 1964-5-2 32 Humboldt 3.25 mi. N of Tish Tang Ranger Station on Hwy. 96 Comment
  CAS-BOT-BC144680  Ribes sanguineum var. glutinosum L. B. Kildale 1930-9-9 10405 Humboldt Bald Mountain 914 Comment
  JEPS49246  Ribes sanguineum var. glutinosum W. L. Jepson 1902-7-1 1972 Humboldt Hupa Road at Berry's Ranch Redwood Creek Comment
  JEPS1245  Romanzoffia californica Joseph P. Tracy 1924-4-27 6645 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 457 Comment
  HSC59061  Romanzoffia californica Thomas Wood 1979-4-20 124 Humboldt At Trinidad Bay 2 Comment
  UC1103817  Romanzoffia tracyi Joseph P. Tracy 1940-5-18 16563 Humboldt 2 mi. n. Trinidad (coast bluff opposite Park's place) 3 Comment
  UC775204  Romanzoffia tracyi J. P. Tracy and H. E. Parks 1933-5-9 11008 Humboldt Vicinity of Trinidad; bluff near ocean; vicinity of Trinidad, Humboldt Co. 15 Comment
  CAS-BOT-BC74508  Rorippa curvisiliqua Malcom A. Nobs; S. Galen Smith 1949-8-9 1238 Humboldt On southern side of the town of Blue Lake. Comment
  HSC44065  Rorippa curvisiliqua Thomas W. Nelson, Jane P. Nelson 1977-8-6 3701 Humboldt Above Alder Spring 1585 Comment
  UC495640  Rorippa curvisiliqua Joseph P. Tracy 1932-10-30 10902 Humboldt Eel River on gravel bars Alton Fortuna; Northern Coast Region, Eel River 15 Comment
  HSC44515  Rosa gymnocarpa Brad Klipfel 1973-7-1 123 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC70507  Rosa gymnocarpa Gail Newton 1980-7-20 1647 Humboldt Near Bell Swamps 1426 Comment
  HSC72825  Rosa gymnocarpa M. A. Baker 1980-6-26 2437 Humboldt Near Sims Creek 393 Comment
  UC667030  Rosa gymnocarpa Joseph P. Tracy 1936-8-7 15107 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC19626  Rosa gymnocarpa W. R. Rogers 1965-5-15 61 Humboldt Camp Bauer 1/4 mi. Korbel Comment
  CAS-BOT-BC146841  Rosa nutkana L. R. Abrams 1916-7-20 6146 Humboldt Between Eureka and Alton Comment
  HSC19614  Rosa nutkana D. J. Jager 1965-5-12 69 Humboldt 0.5 mi. N of Trinidad on bluff above College Cove 46 Comment
  OBI5837  Rosa nutkana Carl B. Wolf 1931-8-28 2364 Humboldt 1.8 mi from Rohnerville on the road to Fortuna 30 Comment
  UC588192  Rosa nutkana var. nutkana H. E. and S. T. Parks May 1937 5816 Humboldt Spruce Cove Trinidad 60 Comment
  CAS-BOT-BC148345  Rosa pisocarpa Joseph P. Tracy 1933-7-25 12898 Humboldt Grouse mt. 1524 Comment
  UCD17678  Rubus armeniacus H. Olmo; T. S. Mallah 1953-4-3 53 65 Humboldt California. Humboldt County: Redwood Highway, on road to Williams Grove along Eel River. 6.3 miles north of Miranda. Comment
  CAS-BOT-BC148382  Rubus leucodermis John Thomas Howell; Alice Eastwood 1937-6-22 4740 Humboldt Near Alder Point Comment
  BLMAR233  Rubus parviflorus Jennifer Anthony-Wheeler 1996-9-26 233 Humboldt King range, growing in moist shade along bearcrk between Nad & Wai campground 548 Comment
  HSC19665  Rubus parviflorus Harvey Doerksen 1962-5-22 25 Humboldt 1/4 mi. N Azalea Reserve State Park, floodplain of Mad River Comment
  HSC31795  Rubus parviflorus Steve Selva, Roger Jensen 1974-8-28 98 Humboldt Behind Humboldt State University, Arcata. Comment
  UCR275117  Rubus parviflorus Charity A. Hartshorn 2016-5-14 29 Humboldt Arcata Community Forest 244 Comment
  BLMAR234  Rubus ursinus Jennifer Anthony-Wheeler 1996-9-26 234 Humboldt King range, growing at base of N bank of S fork bear creekbed 548 Comment
  HSC34808  Rubus ursinus David Peters 1975-4-9 5 Humboldt .1 mi. E of Kirkpatrick Quarry Rd. on Jacoby Cr. Rd. Comment
  UC1128669  Rubus ursinus R. Stahelin 1933-5-15 19521 Humboldt Freshwater Eureka Quad. Comment
  UCD17930  Rubus ursinus H. Olmo; T. S. Mallah 1953-4-3 53- 59 A Humboldt California. Humboldt County: Jordan Street in Rohnerville. In city limits, 0.5 blocks west of the north side of the Richfield filling station. Comment
  HSC102932  Rumex M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 952 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  CHSC1353  Rumex acetosella M. Underhill 1952-7-14 Humboldt 30 Comment
  HSC55080  Rumex acetosella G. L. Clifton, Griswold 1979-7-31 11715 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC55264  Rumex acetosella Overton, Butler 1979-8-2 12614 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UCD100980  Rumex acetosella Linda M. Barker 1976-5-13 1483 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC17583  Rumex acetosella J. E. Lankila 1962-5-14 28 Humboldt W bank of river at Fernbridge Comment
  HSC37233  Rumex acetosella Lon Hall 1975-6-19 399 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC48031  Rumex acetosella Brad Klipfel 1974-5-27 404 Humboldt Horse Mtn. Comment
  HSC59582  Rumex acetosella Rick Lundquist 1979-4-24 34 Humboldt SE corner 7th and Union St., Arcata 24 Comment
  UC672928  Rumex conglomeratus Joseph P. Tracy 1935-7-17 14097 Humboldt opposite mouth of Willow Creek; Trinity River Valley, Lack Pond 152 Comment
  CAS-BOT-BC421748  Rumex conglomeratus Malcom A. Nobs; S. Galen Smith 1949-8-9 1236 Humboldt On southern side of the town of Blue Lake Comment
  SEINET200757  Rumex crispus Joseph P. Tracy 1908-7-30 2806 Humboldt Valley of Van Duzen River, opposite Buck Mountain. 300 Comment
  UC1191278  Rumex maritimus Malcolm A. Nobs and S. Galen Smith 1949-8-11 1338 Humboldt e shore Stone Lagoon Comment
  UC672926  Rumex occidentalis Joseph P. Tracy 1932-7-20 10730 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC55429 Image available Rumex salicifolius var. transitorius J. P. Tracy 1901-6-20 1157 Humboldt immediate vicinity Eureka; ; vicinity of Eureka, Humboldt Co. 0 Comment
  CAS-BOT-BC454158  Ruppia maritima Joseph P. Tracy 1938-7-15 16079 Humboldt Mouth of Eel River 3 Comment
  UCD92347  Rytidosperma penicillatum B. A. Madson 1938-8-5 s.n. Humboldt Loleta (coast). Comment
  UCD92351  Rytidosperma penicillatum R. Tofsrud 1947-7-1 200 Humboldt near Loleta. Comment
  RSA91846  Rytidosperma penicillatum F. W. Peirson 1941-7-28 13113 Humboldt at Patrick's Point State Park Comment
  SEINET10966379  Rytidosperma penicillatum Joseph P. Tracy 1942-6-28 Tracy 17267 Humboldt Hungry Hollow. on Bald Mountain 610 Comment
  HSC69636  Salicornia depressa R. Kalal 1980-5-8 22 Humboldt Foster Rd. near Arcata 6 Comment
  SEINET10937633  Salicornia virginica Mary Susan Taylor 1982-10-24 Taylor 5176 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  CAS-BOT-BC132666  Salix A. T. Whittemore 1980-3-15 80 -007 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC129895  Salix bonplandiana Joseph P. Tracy 1933-6-9 12528 Humboldt Along Eel River - Northern Coast Ranges 30 Comment
  POM182024  Salix eastwoodiae Joseph P. Tracy 1932-7-16 10647 Humboldt McKay Meadow. Tinity summit. Klamath Mountains. 1524 Comment
  JEPS14785  Salix exigua Joseph P. Tracy 1933-5-19 12203 Humboldt Alton to Fortuna (Eel River); Northern Coast Region, Eel River 15 Comment
  POM219693  Salix exigua H. E. Parks 1931-5-14 958 Humboldt Fernbridge. Eel River. 10 Comment
  LA208688  Salix exigua var. hindsiana Harold E. Parks; 1931-5-14 958 Humboldt Fernbridge, Eel River 10.0 Comment
  SBBG29091  Salix exigua var. hindsiana C. R. Ball, H. Parks, J. Tracy 1932-5-17 1335 Humboldt above Trinity River, 1 mi below bridge on Trinity Hwy 152 Comment
  UC490566  Salix exigua var. hindsiana Joseph P. Tracy 1932-6-14 10151 Humboldt at Willow Creek Trinity River valley; Northern Coast Ranges 152 Comment
  UC512026  Salix exigua var. hindsiana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1332 Humboldt near bridge on Trinity Hwy. (in ... channel of Trinity R.) 152 Comment
  UC512028  Salix exigua var. hindsiana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1330 Humboldt near bridge on Trinity Hwy. Trinity R. 152 Comment
  CAS-BOT-BC104098  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0975 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC106851  Salix hookeriana Harold E. Parks 1931-5-12 0953 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC106860  Salix hookeriana W. J. Ferlatte 1967-6-13 1118 Humboldt Clam Beach Lagoon 6 Comment
  CAS-BOT-BC107708  Salix hookeriana Harold E. Parks 1931-3-24 912 Humboldt Fortuna, on banks of Eel River 10 Comment
  CAS-BOT-BC107724  Salix hookeriana Alice Eastwood 1923-8-14 12321 Humboldt Samoa Comment
  CAS-BOT-BC107746  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1225 Humboldt In pine barrens near the coast, 1 mile north of Samoa Comment
  CAS-BOT-BC107760  Salix hookeriana Harold E. Parks 1931-5-28 0999 Humboldt Little River Lagoon Comment
  HSC90193  Salix hookeriana Jean Hanson 1980-3-8 10 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC90428  Salix hookeriana Jean Hanson 1980-3-8 12 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  JEPS12957  Salix hookeriana Joseph P. Tracy 1931-9-27 9692 Humboldt Alton to Fortuna (on gravel bars); Northern Coast Region, Eel River 15 Comment
  JEPS38443  Salix hookeriana J. P. Tracy 1906-4-12 2401 Humboldt Immediate vicinity of Eureka 0 Comment
  POM219354  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt Near Samoa. On Humboldt Bay. 6 Comment
  SD936  Salix hookeriana Harold E. Parks 1931-3-24 914 Humboldt Fortuna, on banks of Eel River 10 Comment
  UC1225926  Salix hookeriana Joseph P. Tracy 1947-6-28 17754 Humboldt Bridgeville Van Duzen River 198 Comment
  UC146206  Salix hookeriana J. P. Tracy 1904-4 2036 /2137 Humboldt Immediate vicinity of Eureka 0 Comment
  UC146208  Salix hookeriana J. P. Tracy 1904-4-3 2011 Humboldt Immediate vicinity of Eureka 0 Comment
  UC469115  Salix hookeriana Joseph P. Tracy 1931-8-23 9622 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC469129  Salix hookeriana Joseph P. Tracy 1931-8-23 9616 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC470437  Salix hookeriana Joseph P. Tracy 1931-10-18 9738 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 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
  UC518899  Salix hookeriana Jim Davis 1933-4-25 4 Humboldt around Eureka Comment
  UCD111039  Salix hookeriana Linda M. Barker 1976-4-30 1416 Humboldt 3 miles west of Arcata. Comment
  JEPS14791  Salix jepsonii Joseph P. Tracy 1933-7-16 12773 Humboldt meadow at McKay Camp S. Fork Mt.; Northern Coast Ranges 1676 Comment
  JEPS14760  Salix laevigata Joseph P. Tracy 1932-7-31 10290 Humboldt along Eel River at mouth of Larrabee Creek; Northern Coast Ranges 30 Comment
  POM218953  Salix laevigata H. P. Bracelin 1931-5-1 271 Humboldt Sylvandale, between Miranda and Meyers. S Fork of Eel River. Comment
  RSA5692  Salix laevigata H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Meyers. S Fork of Eel River. Comment
  UC469476  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1931-11-8 9744 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC518900  Salix lasiandra subsp. lasiandra Jim Davis Apr 25 1933-Apr 27 1933 3 Humboldt around Eureka Eureka Comment
  UC54675  Salix lasiandra subsp. lasiandra J. P. Tracy 1901-4-7 1013 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC125222  Salix lasiandra var. lasiandra Harold E. Parks; Susan T. Parks 1931-8-15 01078 Humboldt Blue Slide, Van Duzen River 100 Comment
  CAS-BOT-BC128196  Salix lasiandra var. lasiandra Doris K. Kildale 1926-3-7 1528 Humboldt Stephen's Grove, river bar - South Fork of Eel River 60 Comment
  CAS-BOT-BC107613  Salix lasiolepis Harold E. Parks; Susan T. Parks 1931-8-15 1079 Humboldt Blue Slide, Van Duzen River 100 Comment
  CHSC9560  Salix lasiolepis E. L. Smith 1971-4-7 930 Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  HSC98055  Salix lasiolepis Cara Witte 2007-7-11 497 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  UC1196627  Salix lasiolepis Joseph P. Tracy 1935-5-25 13890 Humboldt North Dobbyn Creek Dobbyn Creek 152 Comment
  UC176177  Salix lasiolepis Joseph P. Tracy 1912-7-26 3840 Humboldt Kneeland Prairie, Lawrence Creek Northern Coast Ranges, Kneeland Prairie, Lawrence Creek 762 Comment
  UC490470  Salix lasiolepis Joseph P. Tracy 1932-9-5 10770 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC490483  Salix lasiolepis Joseph P. Tracy 1932-9-5 10775 Humboldt upper Mattole Valley Northern Coast Ranges, upper Mattole Valley 152 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
  UC490548  Salix lasiolepis Joseph P. Tracy 1932-4-24 9805 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC490552  Salix lasiolepis Joseph P. Tracy 1932-3-6 9775 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC504020  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
  UC506341  Salix lasiolepis Joseph P. Tracy 1933-4-9 10967 Humboldt Bridgeville, along Van Duzen River 228 Comment
  UC506343  Salix lasiolepis Joseph P. Tracy 1933-5-11 10932 Humboldt Blue Slide, on Van Duzen River 91 Comment
  UC506344  Salix lasiolepis Joseph P. Tracy 1933-3-19 10932 Humboldt Blue Slide, on Van Duzen River 228 Comment
  CDA39553  Salix lasiolepis Gordon Leppig 1999-4-15 1116 Humboldt Big Lagoon County Park; Big Lagoon Bog. Comment
  CDA39554  Salix lasiolepis Gordon Leppig 1999-4-15 1118 Humboldt Big Lagoon County Park; Big Lagoon Bog. Comment
  CAS-BOT-BC107294  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01239 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  POM220140  Salix lasiolepis var. bigelovii H. E. Parks, Joseph P. Tracy 1931-5-17 976 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  CAS-BOT-BC107411  Salix lasiolepis var. lasiolepis Doris K. Kildale 1927-3-20 2907 Humboldt Stephens Grove on South Fork of Eel River 60 Comment
  RSA178543  Salix lasiolepis var. sandbergii Joseph P. Tracy 1950-4-20 18623 Humboldt Van Duzen River. 10 miles SE of Dinsmore's. About 4 miles SE of Kuntz. Comment
  POM220145  Salix lucida subsp. lasiandra H. E. Parks, Joseph P. Tracy 1931-5-17 966 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  CAS-BOT-BC125607  Salix melanopsis Harold E. Parks 1931-10-15 01077 Humboldt Bishop Pine Lodge, Trinidad 75 Comment
  LA208931  Salix melanopsis Harold E. Parks; 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  POM89799  Salix melanopsis Joseph P. Tracy 1920-5-31 5334 Humboldt Mouth of Yager Creek. 30 Comment
  UC519380  Salix melanopsis Joseph P. Tracy 1933-5-20 12261 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC906707  Salix melanopsis Harold E. Parks and Joseph P. Tracy 1942-5-16 11553 Humboldt vicnity of Garberville Garberville 152 Comment
  SEINET7545185  Salix melanopsis H. E. Parks 1931-1 0962 Humboldt Van Duzen River between Alton and Carlotta 5 Comment
  RSA0034666  Salix melanopsis var. bolanderiana H. P. Bracelin 1931-5-2 283 Humboldt East of Redwood Highway, 6 km. south of Alton. 20 Comment
  POM89803  Salix purpurea Joseph P. Tracy 1919-5-25 5137 Humboldt Humboldt Bay. Ryan's Slough 15 Comment
  CAS-BOT-BC129131  Salix scouleriana Harold E. Parks 1931-5-14 957 Humboldt Little Larabee Bridge, Van Duzen River 450 Comment
  HSC20076  Salix scouleriana J. P. Tracy 1932-7-13 10507 Humboldt Klamath Mtns., Trinity summit, Corral Prairie 1524 Comment
  RSA47087  Salix scouleriana Doris K. Kildale 1926-9-5 2637 Humboldt On trail between Goat Camp and Red Peak, Lassack's Peaks 1677 Comment
  UC1173623  Salix scouleriana Joseph P. Tracy 1935-3-8 13731 Humboldt alont Trinity Hwy. Willow Creek Canyon 304 Comment
  UC481359  Salix scouleriana Harold E. Parks 1931-5-14 957 Humboldt Van Duzen R. <at> Little Larabee Bridge; Van Duzen R. 450 Comment
  CAS-BOT-BC128989  Salix sitchensis Joseph P. Tracy 1934-3-25 13168 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC90465  Salix sitchensis Jean Hanson 1980-4-12 33 Humboldt Indian (Gunther) Island, Humboldt Bay, W end of island Comment
  UC481276  Salix sitchensis Harold E. Parks 1931-5-28 1029 Humboldt Little River Lagoon Comment
  UC511992  Salix sitchensis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1240 Humboldt floodplain of Van Duzen R. at Blue Slide; Van Duzen R. 91 Comment
  UC1196609  Salix tracyi Joseph P. Tracy 1934-9-30 13680 Humboldt Van Duzen River at Bridgeville 198 Comment
  UC1222585  Salsola tragus Joseph P. Tracy 1950-8-20 19323 Humboldt 8 mi. below Orleans (Klamath R. near Slate Creek, at Big Bar); Klamath R. 121 Comment
  RSA21578  Sambucus caerulea C. B. Wolf 1937-9-8 9299 Humboldt North Coast Range, Bull Creek-Petrolia Road, Bull Creek, 6 miles west of Redwood Highway 183 Comment
  POM118790  Sambucus callicarpa Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  CAS-BOT-BC238659  Sambucus nigra subsp. caerulea Doris K. Kildale 1926-9-9 2677 Humboldt Van Duzen River between Strong's [Strongs] Station & Bridgeville. Bar W. Ranch 158 Comment
  HSC59500  Sambucus racemosa var. racemosa M. A. Ericksen 1979-4-6 202 Humboldt 880 Central Ave. McKinleyville. 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
  CAS-BOT-BC157200  Sanguisorba officinalis L. B. Kildale 1930-7-11 10208 Humboldt Snow Camp head of Redwood Creek Comment
  HSC21611  Sanicula arctopoides R. D. Modafferi 1965-3-13 16 Humboldt 1 mi. N of Trinidad on Trinity St. 305 Comment
  HSC100691  Sanicula bipinnata Carl C. Marshall 432 Humboldt Spruce Grove. Comment
  CAS-BOT-BC223253  Sanicula bipinnatifida Joseph P. Tracy 1938-7-4 15985 Humboldt Valley of South Yager Creek 762 Comment
  HSC100692  Sanicula bipinnatifida Carl C. Marshall Apr 1886 184 Humboldt Hill at Scottsville. Comment
  HSC37194  Sanicula bipinnatifida Barbara Kelly 1976-5-13 255 Humboldt Below road at Kneeland Airport Comment
  HSC38937  Sanicula crassicaulis Linda M. Barker 1976-5-13 1485 Humboldt 3 mi. W of Arcata. Comment
  UC1022529  Sanicula crassicaulis C. Ritchie Bell 1952-5-3 3 X449 Humboldt 5 mi n of Loleta (to e of U.S. Hwy 101) Comment
  HSC102543  Sanicula graveolens M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1529 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1197084  Sanicula laciniata Joseph P. Tracy 1925-3-29 6950 Humboldt Northern Coast Ranges, South Fork of Eel River, Miranda South Fork Eel River; Northern Coast Ranges, , Miranda 91 Comment
  HSC21645  Sanicula tuberosa F. Morrell 1949-5-15 Humboldt Berry Summit Comment
  CAS-BOT-BC441184  Saxifraga mertensiana Doris K. Kildale 1927-3-20 2930 Humboldt Philipsville. South fork of Eel River Comment
  HSC7445  Schoenoplectus americanus J. W. Johnson 1962-4-18 1271 Humboldt Between the Mad River mouth and the Hunt Farm, Samoa Peninsula Comment
  RSA246910  Schoenoplectus maritimus Robert F. Thorne, Percy C. Everett 1965-8-7 35213 Humboldt Samoa Peninsula: near sea level Comment
  UC668011  Scirpus cernuus Joseph P. Tracy 1938-6-16 15942 Humboldt Trinidad 3 Comment
  UC668013  Scirpus cernuus Joseph P. Tracy 1932-5-10 9941 Humboldt s of point Cape Mendocino (near ocean shore) 3 Comment
  UC1152056  Scirpus microcarpus Joseph P. Tracy 1950-8-7 19269 Humboldt meadow at Box Camp (Trinity Summit); , meadow at Box Camp 1463 Comment
  HSC101577  Scleranthus annuus subsp. annuus J. P. Smith, J. O. Sawyer 2010-5-8 12863 Humboldt Lawn and parking lot adjacent to the Dinsmore Airport 733 Comment
  RSA183587  Scoliopus bigelovii R. D. Zortman 1963-3-16 13 Humboldt 5 miles northeast of Arcata; south of the Mad River, off Warren Creek Road. 91 Comment
  CAS-BOT-BC517413  Scoliopus bigelovii Doris K. Kildale 1927-3-19 2903 Humboldt Luffenholtz Creek near Trinidad Comment
  HSC59743  Scrophularia californica Clark L. Miller 1979-5-9 6117 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  JEPS11415  Scrophularia californica Lincoln Constance 1934-5-26 684 Humboldt s end of Dyerville Bridge; Bull Creek Region, South Fork Eel River 45 Comment
  JEPS6741  Scrophularia californica Joseph P. Tracy 1937-7-30 15565 Humboldt 6 mi s Arcata (Fickle Hill) 609 Comment
  UC582592  Scrophularia californica Joseph P. Tracy 1933-8-22 12980 Humboldt Eureka 6 Comment
  HSC37231  Scrophularia californica Lon Hall 1975-6-20 403 Humboldt About 2 mi. N from Shelter Cove Rd. on Horse Mtn. Rd., along Bear Creek, from streamside up to unused dirt logging road above creek 488 Comment
  HSC56430  Scutellaria antirrhinoides Griswold, Butler 1979-7-10 7138 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC98088  Scutellaria antirrhinoides Cara Witte 2007-7-11 481 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  HSC98722  Scutellaria antirrhinoides Cara Witte 2008-7-16 918 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  UC175777  Scutellaria antirrhinoides Joseph P. Tracy 1912-6-9 3670 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  HSC45581  Scutellaria tuberosa Diane L. Reed 1978-5-7 47 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  HSC57960  Sedum divergens G. L. Clifton, Griswold 1979-7-31 11660 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  SEINET12218663  Sedum divergens J. P. Tracy 1950-1 19294 Humboldt Croghan Hole on Trinity Summit 1676 Comment
  HSC76350  Sedum laxum subsp. heckneri Denis Kearns 1981-7-21 299 Humboldt Near Whiteys Peak 1585 Comment
  HSC97996  Sedum radiatum Cara Witte 2007-7-8 440 Humboldt Board Camp Mountain. Trail 4E28. 1498 Comment
  CAS-BOT-BC63826  Sedum spathulifolium Elizabeth Parsons Hawyer 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC6476  Sedum spathulifolium var. pruinosum Joel W. Reinhard 1966-5-20 49 Humboldt Two beaches N of College Cove Comment
  HSC89507  Sedum spathulifolium var. pruinosum M. Roantree 1985-6-11 89 Humboldt W side of Trinidad Head, W of trail Comment
  JEPS307  Selaginella oregana Joseph P. Tracy 1928-8-29 8426 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  CAS-BOT-BC69734  Selaginella wallacei Ira L. Wiggins 1957-6-20 14136 Humboldt 8.5 mi. s. of Ferndale. Comment
  UCD135494  Senecio glomeratus Linda M. Barker 1976-7-5 1634 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC99425  Senecio integerrimus var. exaltatus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-1 74 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
  UC1199241  Senecio integerrimus var. major Joseph P. Tracy 1938-5-1 15728 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1199242  Senecio integerrimus var. major Joseph P. Tracy 1938-6-13 15914 Humboldt Cold Springs Grouse Mountain 1432 Comment
  UC581705  Senecio integerrimus var. major Joseph P. Tracy 1930-7-18 9064 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC100446  Senecio mendocinensis Carl C. Marshall Jul 1887 433 Humboldt Spruce Grove. Comment
  UC1199491  Senecio minimus Joseph P. Tracy 1936-8-23 15161 Humboldt Carlotta Northern Coast Ranges Comment
  UC1199492  Senecio minimus Joseph P. Tracy 1934-8-31 Humboldt Kneeland Prairie 762 Comment
  UC581699  Senecio sylvaticus Joseph P. Tracy 1934-7-3 13305 Humboldt near Freshwater Corners (around Humboldt Bay); northern Coast Region, around Humboldt Bay 15 Comment
  HSC53962  Senecio triangularis Griswold, Butler 1979-7-11 7015 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  UC1199234  Senecio triangularis Joseph P. Tracy 1933-7-25 12846 A Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  HSC63881  Senecio triangularis M. A. Baker 1979-6-27 923 Humboldt Edge of Hoopa Indian Reservation Comment
  RSA20783  Senecio triangularis C. B. Wolf 1937-8-13 9247 Humboldt North Coast Range 11 mi. E. of Hoopa Valley on New Road towards Trinity Summit. 1524 Comment
  UC1070215  Senecio vulgaris H. L. Person 1932-8-20 18486 Humboldt Eureka Inn Eureka, Eureka Inn Comment
  MACF015653  Sequoia sempervirens F. A. MacFadden 1935-6-22 13644 Humboldt Richardson's Grove, Humboldt California Comment
  RSA383928  Sequoia sempervirens M. B. Dunkle 1936-8-22 4858 Humboldt Williams Grove, Eel River. 213 Comment
  UCR142864  Sequoia sempervirens C. B. Wolf 1944-10-25 11469 Humboldt North Coast, Eel River Valley, Redwood Hwy, 2.4 mi south of Scotia 61 Comment
  SEINET10719715  Sequoia sempervirens Ronald J. Mastrogiuseppe Mastrogiuseppe s.n. Humboldt On the flood plain of the Founders' Grove. Comment
  UC205153  Sericocarpus oregonensis subsp. oregonensis Joseph P. Tracy 1919-9-14 5214 Humboldt near mouth of Willow Creek (valley of Trinity River); Trinity River 152 Comment
  UC526852  Setaria viridis Joseph P. Tracy 1934-8-18 13589 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  HSC1093  Sherardia arvensis W. Lanphere 1937-2-16 Humboldt H.S.C. Campus Comment
  HSC19857  Sherardia arvensis E. W. Styskel 1963-5-19 44 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  JEPS50069  Sidalcea diploscypha W. L. Jepson 1934-5-7 16701 Humboldt Buckeye Prairie Bull Creek, Buckeye Prairie Comment
  JEPS50089  Sidalcea diploscypha Lincoln Constance 1934-5-23 613 Humboldt sw slope Upper end Look Prairie Bull Creek Region, South Fork Eel River, Look Prairie (South Fork Eel River, Bull Creek Region) 365 Comment
  UC668136  Sidalcea malachroides Joseph P. Tracy 1938-6-15 15938 Humboldt vicinity Carlotta; vicinity of Carlotta 30 Comment
  UC668138  Sidalcea malachroides Joseph P. Tracy 1938-6-15 15938 Humboldt vicinity Carlotta; vicinity of Carlotta 30 Comment
  RSA87998  Sidalcea malviflora C. L. Hitchcock 1952-6-28 19639 Humboldt Dow s Prairie, 4 miles N. of Arcata, Comment
  HSC57355  Sidalcea malviflora subsp. nana Overton, Butler 1979-7-26 10047 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  UC1197976  Sidalcea malviflora subsp. patula Joseph P. Tracy 1927-6-18 8180 Humboldt hills w Petrolia; Northern Coast Ranges, w of Petrolia 152 Comment
  UC1197968  Sidalcea oregana subsp. eximia Joseph P. Tracy 1932-9-16 10800 Humboldt Dows Prairie Northern Coast Ranges, Dows Prairie 60 Comment
  RSA20781  Sidalcea oregana subsp. spicata Carl B. Wolf 1937-8-13 9245 Humboldt North Coast Range, 11 miles E of Hoopa Valley on new road towards Trinity Summit 1524 Comment
  HSC35031  Silene bolanderi Thomas W. Nelson, James Nelson 1975-5-24 1849 Humboldt McKeown Ranch, N of Dinsmore. Comment
  SEINET10537655  Silene californica Mary Merello 1993-6-19 Merello 659 Humboldt Along the Weott-Honeydew Road just outside of the Rockerfeller Forest boundary. Redwood Forest. 90 Comment
  HSC100416  Silene californica Carl C. Marshall Jun 1885 93 Humboldt Hills everywhere. Comment
  RSA78056  Silene californica P. A. Munz 1952-3-27 17800 Humboldt Boise Creek Public Camp west of Willow Creek. 366 Comment
  UC13584  Silene campanulata subsp. glandulosa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  HSC4184  Silene gallica Lincoln Constance 1934-5-24 631 Humboldt S Fork Eel River, bordering lower Look Prairie on E. side 122 Comment
  HSC59744  Silene gallica Clark L. Miller 1979-5-9 6116 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  HSC61770  Silene gallica Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  CHSC63389  Silene grayi Vernon H. Oswald 1994-6-29 6360 Humboldt Titlow Hill Rd. (Forest Rd. 1) 5.6 mi S of Hwy. 299, S of Willow Creek. 1469 Comment
  UC668082  Silene grayi Joseph P. Tracy 1932-7-12 10477 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  HSC48475  Silene hookeri J. P. Smith, J. O. Sawyer, Jane Cole 1978-5-21 9932 Humboldt Six Rivers Natl. Forest, along Ishi Pishi Rd., 1.5 mi. from the Ishi Pishi Bridge over the Klamath River 305 Comment
  HSC100709  Silene hookeri Carl C. Marshall Jun 1886 10 Humboldt S Fork Mtn. near summit. 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
  HSC4219  Silene lemmonii J. P. Tracy 1932-7-12 10452 Humboldt Trinity Summit, near Corral Prairie 1585 Comment
  UC1198790  Sisymbrium altissimum Joseph P. Tracy 1933-6-25 12618 Humboldt 2 to 5 mi e of the South Fork (along Eel River, Camp Grant); Eel River, Camp Grant 45 Comment
  UC492253  Sisymbrium altissimum Joseph P. Tracy 1932-5-17 10090 Humboldt Trinity River near Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  UC552236  Sisymbrium officinale Joseph P. Tracy 1933-8-22 12976 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC13915  Sisyrinchium bellum F. B. Plett 1963-3-31 14 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  HSC13929  Sisyrinchium bellum R. D. Modaferri 1965-5-13 97 Humboldt 0.8 mi. N of Trinidad on Trinity St. 305 Comment
  HSC59467  Sisyrinchium bellum M. A. Ericksen 1979-5-13 284 Humboldt Chezem Rd., 0.2 mi. W of Hwy. 299 Comment
  POM208981  Sisyrinchium bellum Lincoln Constance 1934-6-4 815 Humboldt South slope of Look Prairie, Bull Creek, Humboldt Redwood Park 381 Comment
  UC13803  Smilax californica Chesnut and Drew 1888-7-23 Humboldt Hy-Am-Pum Comment
  SBBG54057  Solanum americanum R. S. Woglum 1938-8-29 2021 Humboldt Samoa Comment
  RSA47109  Solanum americanum Doris K. Kildale 1926-3-22 1601 Humboldt Helena Creek. Comment
  JEPS12169  Solanum umbelliferum Lincoln Constance 1934-6-2 788 Humboldt Bull Creek Region, South Fork Eel River, Bull Creek road to mouth of Bull Creek, and up Bull Creek South Fork Eel River; Bull Creek Region, , Bull Creek Comment
  POM210211  Solidago canadensis subsp. elongata H. E. Parks 1931-07 1056 Humboldt Trinidad. 76 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
  UC1070251  Solidago elongata H. L. Person 1932-7-19 Humboldt Lindsay Creek Eureka Quad, Lindsay Creek Comment
  HSC59683  Solidago spathulata George Kirn 1977-10-30 Humboldt 1/2 mi. from mouth of Elk River 8 Comment
  HSC90234  Solidago spathulata L. Watson, J. Meninga Aug 1990 10 Humboldt Near Manilla. Mad River Slough and Dunes. 10 ft. N of parking lot, E of trail Comment
  SEINET191265 Image available Solidago spathulata S. K. Harris 1939-9-5 990 Humboldt Samoa. Comment
  UC1173677  Solidago spathulata Joseph P. Tracy 1939-8-18 16426 Humboldt on vacant lot on Clark St. (between C and D; 1/2 mi from bay); Eureka 15 Comment
  UC1478656  Solidago spathulata Robert F. Thorne 1974-7-29 45070 Humboldt between Humboldt Bay and Pacific Ocean (Samoa Dunes); Samoa Dunes Comment
  UC673079  Solidago velutina subsp. californica Joseph P. Tracy 1940-8-18 16702 Humboldt South Fork Eel River near Bolling Grove; South Fork Eel River 91 Comment
  UC1223173  Soliva sessilis Joseph P. Tracy 1942-6-15 17157 Humboldt on the road to Harris 1/2 mi ne Garberville 304 Comment
  HSC35009  Soliva sessilis J. O. Sawyer 1975-5-20 2695 Humboldt 1445 Chester Ave., Sunnybrae Comment
  CAS-BOT-BC374427  Sonchus asper Joseph P. Tracy 1932-6-4 10132 Humboldt Bridgeville 198 Comment
  HSC56199  Sorbus scopulina Gilbert Muth 1979-8-1 12165 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC1198764  Sorbus scopulina var. scopulina Joseph P. Tracy 1935-7-28 14310 Humboldt Ridges e of Corral Prairie; Trinity Summit 1828 Comment
  RSA355701  Sparganium angustifolium subsp. emersum Walter Wisura, Dave Kelly 1986-7-30 4135 Humboldt North of Crannel on Louisiana Pacific Lumber Co. property; in pond ca. 1 mile beyond the gate. Comment
  HSC97446  Sparganium emersum Ivy Watson 2008-10-5 35 Humboldt Blue Lake; ~ 500 ft. upstream of the Hatchery Rd. bridge, north bank. 22 Comment
  UC14919  Sparganium erectum subsp. stoloniferum Hattie F. Tracy 1901-6-26 1216 Humboldt Loleta 15 Comment
  HSC10995  Spartina densiflora T. L. Ackerman 1964-5-10 46 Humboldt Across US 101 from Murray Field, Humboldt Bay Comment
  HSC4236  Spergula arvensis S. J. Hawks 1965-4-6 22 Humboldt Clam Beach Comment
  HSC4241  Spergula arvensis S. R. Johnson 1965-3-14 2 Humboldt 1.5 mi N of Luffenholtz Beach Comment
  CAS-BOT-BC390302  Spergularia macrotheca var. macrotheca Alice Eastwood; John Thomas Howell 1936-7-3 3782 Humboldt Eureka Comment
  HSC37315  Spergularia rubra J. P. Smith 1976-5-27 8814 Humboldt Corner of 14th and G St. Arcata Comment
  JEPS45003  Spiraea densiflora Joseph P. Tracy 1926-6-20 7630 Humboldt Horse Mountain; Northern Coast Ranges 1463 Comment
  UC666852  Spiraea douglasii Joseph P. Tracy 1937-7-17 15435 Humboldt Eureka 30 Comment
  UCSB26682  Spiraea douglasii Havlik, Neil 1968-8-21 Humboldt south end of Big Lagoon, north of Trinidad 1 Comment
  HSC55605  Spiraea splendens var. splendens Overton, Butler 1979-7-23 9444 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  UC666994  Spiranthes porrifolia Joseph P. Tracy 1937-6-26 15376 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC18465  Spiranthes romanzoffiana Jana Kattenhorn 1970-10-14 168 Humboldt Big Lagoon Comment
  UC1196398  Spiranthes romanzoffiana Mrs. Alma Bonstell 1912-8-5 Humboldt Christmas Prairie Northern Coast Ranges 914 Comment
  UC666993  Spiranthes romanzoffiana Joseph P. Tracy 1934-7-21 13477 Humboldt near Samoa (edges of dunes); Humboldt Bay 6 Comment
  UC672873  Spirodela polyrhiza Joseph P. Tracy 1932-8-21 10371 Humboldt w slope Chaparral Mt. (Three Cabins Ranch, on e side of Mad River) 457 Comment
  HSC100156  Spirodela polyrhiza Kenneth Clark 1979-4-21 148 Humboldt Off of Cranell Rd., 50 ft. E of Hwy. 101 Comment
  UC635137  Stachys ajugoides var. rigida H. L. Mason 1932-7-21 7103 Humboldt Big Lagoon Comment
  CDA41013  Stachys ajugoides var. rigida T. C. Fuller 1962-8-6 9351 Humboldt Highway 299 to Blue Lake, 4.8 miles west of Willow Creek. 0 Comment
  UCLA70877  Stachys ajugoides var. rigida Joseph P. Tracy 1938-7-12 16054 Humboldt Table Bluff Beach, lowlands at w foot of bluff Table Bluff 6 Comment
  UCLA71115  Stachys ajugoides var. rigida H. Lewis 1940-7-3 Humboldt Little River Beach State Park Comment
  UCLA71140  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  SDSU7904  Stachys chamissonis Harvey 1938-8-13 2269 Humboldt North of Arcata. Comment
  RSA33417  Stachys emersonii Carl B. Wolf 1937-8-13 9246 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on new road towards Trinity Summit. 1524 Comment
  RSA82579  Stachys emersonii F. W. Peirson 1926-7-12 7034 Humboldt Redwood Creek, Orick. Comment
  HSC74423  Stachys rigida Gail Newton 1980-8-10 2046 Humboldt Near Blake Mtn. 1707 Comment
  HSC49394  Stachys rigida R. York 1979-5-15 288 Humboldt Trail leading to College Cove 1 mi. N of Trinidad Comment
  RSA20845  Stachys rigida subsp. quercetorum Carl B. Wolf 1937-6-18 8885 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  HSC48678  Stachys rigida var. rigida Brad Klipfel 1973-7-31 250 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC48033  Stellaria nitens Brad Klipfel 1974-5-27 407 Humboldt Horse Mtn. Comment
  UC183560  Stellaria nitens Joseph P. Tracy 1913-5-4 4045 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC97387  Stipa pulchra J. P. Tracy 1927-5-8 7963 Humboldt Phillipsville, facing S fork of Eel River 122 Comment
  UC956549  Streptanthus tortuosus Freed W. Hoffman 1949-7-18 2863 Humboldt Red Mountain rd 9.6 mi from Eureka-Red Bluff Highway 1615 Comment
  UC492251  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9029 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UCSB25555  Streptopus amplexifolius Keefe, Joseph 1967-7-9 Humboldt Fern Canyon, south edge of Prairie Creek State Park 3 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
  UC1103500  Streptopus amplexifolius var. americanus Joseph P. Tracy 1930-7-17 8998 Humboldt McKay Camp; South Fork Mountain 1676 Comment
  HSC99468  Symphoricarpos mollis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 122 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1225823  Symphoricarpos mollis Joseph P. Tracy 1948-8-15 18144 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UCD136540  Symphyotrichum chilense Collector unknown Date unknown s.n. Humboldt exact location unknown. Comment
  CAS-BOT-BC98926  Symphyotrichum foliaceum var. parryi Joseph P. Tracy 1917-9-1 4836 Humboldt Murphy Meadow, Bald Mountain 1066 Comment
  SEINET11071711 Image available Symphytum asperum Joseph P. Tracy 1943-1 17448 Humboldt Near Iverson Dairy Ranch, Arcata Comment
  UC1198058  Synthyris reniformis Joseph P. Tracy 1926-2-28 7380 A Humboldt e fork Willow Creek Canyon; Northern Coast Ranges 457 Comment
  CAS-BOT-BC376723  Tanacetum bipinnatum M. Louise Hutchinson 1913-1-1 s.n. Humboldt Eureka Comment
  CAS-BOT-BC376736  Tanacetum bipinnatum Ira L. Wiggins 1940-7-10 9484 Humboldt Big Lagoon Comment
  HSC6248  Tanacetum bipinnatum J. W. Johnson 1962-6-4 1405 Humboldt W end of Hollow 10, W.M Lanphere Farm, Samoa Peninsula Comment
  HSC90426  Tanacetum bipinnatum Jean Hanson 1980-6-22 93 Humboldt Indian (Gunther) Island in Humboldt Bay, city of Eureka. W end of island; ca. 100 ft. inland from shore Comment
  UC1223071  Tanacetum parthenium Joseph P. Tracy 1946-9-10 17659 Humboldt Tracy's garden, at Eureka Northern Coast Ranges, Eureka 0 Comment
  CAS-BOT-BC376777  Tanacetum parthenium Henry M. Pollard 1947-8-21 s.n. Humboldt Near Camp Creek, Orleans region Comment
  SBBG65853  Tanacetum vulgare R. Hartwell 1938-8-4 Humboldt near Ferndale Comment
  UC1239515  Taraxacum officinale Joseph P. Tracy 1924-5-4 6666 Humboldt Bridgeville Northern Coast Ranges 243 Comment
  UC1197330  Tauschia kelloggii Joseph P. Tracy 1926-4-11 7407 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  HSC98547  Taxus brevifolia Cara Witte 2008-6-7 687 Humboldt Forest Service Road 5N10. Approximately 1 mile south of intersection with Friday Ridge Road/ 6N08. 1346 Comment
  SBBG56445  Taxus brevifolia L. Rowntree 1931-7-26 Humboldt Carlotta Comment
  UC54785  Taxus brevifolia P. E. Goddard Jul 1 1901-Aug 1 1901 127 Humboldt Mud Springs Trinity Summit Trail, Mud Springs Comment
  POM117233  Tellima grandiflora Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  HSC93510  Tellima grandiflora Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-6 745 Humboldt Hwy. 101 road cut overlooking Big Lagoon 40 Comment
  UC668275  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1937-5-30 15308 Humboldt along creek 3 mi n Blocksburg; Larrabee Creek 457 Comment
  UCR32079  Thuja plicata David J. Keil 1983-7-2 17308 Humboldt North Coast Range, c. 10.5 mi east of the junction with US Hwy 101 along SR 299 [2-3 mi. east of Blue Lake] 183 Comment
  RSA134612  Thuja plicata 1959-10-25 23970 Humboldt 6.9 mi SW from Ferndale on old coast road to Capetown. 564 Comment
  CAS-BOT-BC88318  Thysanocarpus curvipes Doris K. Kildale 1926-4-25 1803 Humboldt Willow Creek Flat. 152 Comment
  CAS-BOT-BC88322  Thysanocarpus curvipes John H. Thomas 1968-4-21 14355 Humboldt About 6.4 miles south of Weitchpec (as measured along the road). 170 Comment
  UCR64482  Tiarella trifoliata var. unifoliata Lyman Benson 1928-7-11 454 Humboldt Dyerville, Bull Creek, S. Fork Eel River, Bull Creek Flat. 120 Comment
  CAS-BOT-BC436906  Tiarella trifoliata var. unifoliata Milo S. Baker 1923-7-1 82 Humboldt Near Wilder's Comment
  HSC20439  Tolmiea diplomenziesii F. B. Plett 1963-5-15 47 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  UC1197064  Torilis arvensis subsp. arvensis Mrs. Archie Cathey 1938-7-30 Humboldt Miranda Cathey Ranch 152 Comment
  RSA12424  Torreyochloa pallida var. pauciflora C. B. Wolf 1934-7-2 5870 Humboldt Small Lake at Snow Camp. (Mountains east of Korbel). 1372 Comment
  CAS-BOT-BC169175  Toxicodendron diversilobum Volney Rattan 1878-1-1 s.n. Humboldt Undspecified Comment
  UC1222896  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  SEINET200361  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1937-7-2 15387 Humboldt Happy Camp Mountain; Trinity Summit Range; Northeast of Hawkins Bar. 1280 Comment
  UC165509  Trifolium albopurpureum var. albopurpureum Harley P. Chandler 1901-6-1 1321 Humboldt Hupa Indian Reservation (now spelled Hoopa on modern maps) North Coast Ranges 152 Comment
  UC1197213  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1912-6-9 3668 Humboldt Alton Northern Coast Ranges Comment
  UC16425  Trifolium barbigerum J. Burtt Davy 1899-6-17 5603 Humboldt Arcata Comment
  SEINET6934847  Trifolium barbigerum Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland Prairie, about 4 miles southeast of Kneeland. Comment
  UC1197493  Trifolium barbigerum Joseph P. Tracy 1904-4-24 2027 Humboldt Ocean Beach Humboldt Bay Comment
  HSC45171  Trifolium dichotomum R. Sutherland 1978-5-21 3 .21578 Humboldt 433 Comment
  HSC45173  Trifolium dichotomum R. Sutherland 1978-5-19 17 .19578 Humboldt 183 Comment
  POM160884  Trifolium dichotomum Joseph P. Tracy 1925-5-30 7023 Humboldt Mcclellan Mountain. 823 Comment
  HSC77333  Trifolium dubium L. P. Janeway 1983-4-30 239 Humboldt 21 Comment
  UC16713  Trifolium eriocephalum var. eriocephalum J. Burtt Davy 1899-6-7 5385 Humboldt near Harris; North Coast Ranges Comment
  UC495702  Trifolium fucatum Joseph P. Tracy 1927-6-5 8100 Humboldt s Yager Creek (valley); Northern Coast Ranges 762 Comment
  POM20265  Trifolium fucatum var. fucatum L. R. Abrams 1916-7-11 6036 Humboldt North of Grizzly Creek on Van Duzon River. Comment
  HSC38085  Trifolium gracilentum Thomas W. Nelson, James Nelson 1976-5-30 2606 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC18849  Trifolium incarnatum C. E. Fellows 1970-5-10 263 Humboldt Rio Dell Comment
  HSC59064  Trifolium incarnatum Thomas Wood 1979-4-6 95 Humboldt On Hwy. side W of 2nd bridge overpass from Eureka, on Gunther Island Comment
  HSC77334  Trifolium incarnatum C. J. Thomas 1983-5-9 28 Humboldt Adjacent to Hwy. overpass walkway near HSU 23 Comment
  SDSU5282  Trifolium incarnatum D. F. Howe 1969-6-3 4623 Humboldt 13 miles north of Orick on # 101. Comment
  HSC58651  Trifolium longipes G. L. Clifton, Griswold 1979-7-31 11709 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC162780  Trifolium longipes var. hansenii Joseph P. Tracy 1908-6 2919 Humboldt nw slopes Buck Mtn; Northern Coast Ranges 1219 Comment
  UC1197233  Trifolium macraei Joseph P. Tracy 1923-5-19 6209 Humboldt near Trinidad; Northern Coast Ranges 15 Comment
  UC1541587  Trifolium microcephalum Harold E. Parks May 1935 5539 Humboldt Spruce Cove Trinidad Comment
  UC180206  Trifolium obtusiflorum Joseph P. Tracy 1914-7-5 4545 Humboldt High Prairie Northern Coast Ranges, Bald Mtn 1066 Comment
  JEPS66013  Trifolium oliganthum Milo S. Baker 5560 Humboldt s Garberville Comment
  UC16702  Trifolium pratense Joseph Burtt Davy and Walter C. Blasdale 1899-6-15 5535 Humboldt near Scotia Comment
  HSC23489  Trifolium pratense R. A. Vanbianchi 1971-9-24 89 Humboldt Comment
  HSC58412  Trifolium repens Griswold, Butler 1979-7-12 7147 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC15164  Trifolium repens J. R. Kahl 1962-5-4 20 Humboldt 2 mi. S of Trinidad along old Hwy. 101 30 Comment
  UC1223320  Trifolium subterraneum Joseph P. Tracy 1951-6-21 19520 Humboldt in experimental garden of A. H. Nurphy on ranch of Everett Beck Hydesville Comment
  UC169345  Trifolium variegatum var. melananthum Joseph P. Tracy 1912-6-30 3714 Humboldt Eureka Northern Coast Region 0 Comment
  HSC103851  Trifolium wormskioldii G. D. Barbe, T. C. Fuller 1974-6-17 1851 Humboldt Crescent City; Pebble Beach Rd., south of Airport and Washington Blvd. Comment
  JEPS66087  Trifolium wormskioldii W. L. Jepson 1902-6-25 1934 Humboldt Korbel to Angel's Ranch Comment
  UCD109957  Trifolium wormskioldii W. A. Williams 1956-6-19 s.n. Humboldt Domingues Creek. 91 Comment
  RSA667224  Triglochin maritima George K. Helmkamp, E. A. Helmkamp 2001-7-8 6995 Humboldt North coastal strand: North spit of Samoa Peninsula, 0.5 miles N of CA-255 bridge over Humboldt Bay. 6 Comment
  UC672871  Triglochin maritima Joseph P. Tracy 1934-7-20 13466 Humboldt Big Lagoon 3 Comment
  UC1134686  Trillium albidum R. Stahelin 1933-5-17 Humboldt Arcata City Park Eureka Quad., Arcata City Park Comment
  HSC101808  Trillium kurabayashii Kjirsten A. Wayman 2012-4-1 304 Humboldt Hoopa, 0.3 miles up Bair Road, near Supply Creek 168 Comment
  CAS-BOT-BC133394  Trillium ovatum L. R. Abrams 1922-6-25 8257 Humboldt North of Mad River near Arcata Comment
  SBBG1084  Trillium ovatum H. and M. Dearing 1933-5-15 269 Humboldt Humboldt County [no specific locality] Comment
  UC1197827  Trillium ovatum Joseph P. Tracy 1912-3-3 3561 Humboldt at Eureka Eureka; Northern Coast Region 0 Comment
  UC1222528  Trillium ovatum Joseph P. Tracy 1950-4-20 18613 Humboldt 1 mi. w. Dinsmore's (on Van Duzen R.); Van Duzen R. Comment
  UC1537232  Trillium ovatum Gordon H. True Jr. 1936-2-26 329 Humboldt on Eel R. near Pepperwood; Eel. R. 91 Comment
  CAS-BOT-BC521313  Trillium rivale Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mountain 1524 Comment
  RSA135459  Triodanis biflora Volney Rattan 1883-6-30 s.n. Humboldt Redwood Creek. Comment
  SEINET12324840  Triodanis biflora H. P. Chandler 1901-1 1415 Humboldt North Coast Ranges, Klamath River 427 Comment
  UC34956  Triodanis biflora Chesnut and Drew 1888-7-9 Humboldt near Campbell's Comment
  CDA41904  Triphysaria pusilla April A. Allard & Gregory D. O Connell 2005-6-1 8 Humboldt Coldspring Camp, 7.4 miles south of Hwy. 299 on NF1. Comment
  HSC104272  Triphysaria versicolor subsp. versicolor Samantha E. Andres 2016-5-4 6 Humboldt Along Jackson Ranch Rd., near the bridge; ~.25 mi. from Hwy. 255 intersection 3 Comment
  JEPS10443  Triphysaria versicolor subsp. versicolor Joseph P. Tracy 1944-5-14 17467 Humboldt Eureka 6 Comment
  HSC99056  Trisetum canescens Cara Witte 2008-7-10 847 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile from National Forest 1. Under powerlines. 1237 Comment
  UC1541533  Trisetum cernuum Harold E. Parks 1934-5-16 4935 Humboldt Carlotta; near station 15 Comment
  UC15026  Triteleia bridgesii Harley P. Chandler June, 1901 1344 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC3103  Triteleia laxa Greg Bos 1965-5-15 273 Humboldt Berry Summit near Hwy. 299 793 Comment
  UC1197719  Triteleia laxa Joseph P. Tracy 1914-7-5 4563 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges 1066 Comment
  CAS-BOT-BC526350  Triteleia laxa Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC23715  Triteleia laxa Tim Baroni 1971-6-25 36 Humboldt 8 mi. E of Petrolia Comment
  RSA89626  Tsuga heterophylla E. K. Balls, P. C. Everett 1953-10-13 18654 Humboldt 11.3 mi to 16.6 mi E of jct. w/ Hwy 101 on Hwy 299 above Blue Lake. 244 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
  BLMAR193  Turritis glabra Donald Hazlett 1994-6-7 193 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC73933  Turritis glabra Doris K. Kildale 1927-7-17 3761 Humboldt Big Creek. 792 Comment
  JEPS65676  Ulex europaeus Joseph P. Tracy 1923-11-24 6594 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC49911  Umbellularia californica Maralyn O'Meara 1973-2-9 123 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  SEINET12102554  Umbellularia californica E. H. Graham 1931-1 6960 Humboldt Along highway near Garberville Comment
  SEINET12103378  Umbellularia californica J. P. Tracy 1950-12-10 s.n. Humboldt no further locality Comment
  RSA167409  Urtica dioica subsp. gracilis Joseph P. Tracy 1950-8-8 19276 Humboldt 1 mile west of lower end of Brogham Hole, 'Trinity Summit Trip'. Comment
  HSC49505  Utricularia macrorhiza R. York 1979-4-13 225 Humboldt Behind grammar school in Fieldbrook. Comment
  CAS-BOT-BC193964  Vaccinium cespitosum Harley P. Chandler 1901-5-1 1181 Humboldt Humboldt Bay 30 Comment
  UC1197771  Vaccinium cespitosum J. P. Tracy 1906-4-22 2415 Humboldt immediate vicinity Eureka; , Ricks Prairie 0 Comment
  UC1197772  Vaccinium cespitosum J. P. Tracy 1901-4-7 1007 Humboldt immediate vicinity Eureka; , Rick's Prairie 0 Comment
  CAS-BOT-BC199223  Vaccinium membranaceum Joseph P. Tracy 1935-7-22 14121 Humboldt Forks of Tish-Tang-a-Tang Creek, Trinity Summit 1371 Comment
  HSC34153  Vaccinium ovatum Linda M. Barker 1974-5-11 186 Humboldt Redwoods National Park, beside Bald Hills Road 366 Comment
  HSC40255  Vaccinium ovatum Linda M. Barker 1976-4-30 1423 Humboldt 3 mi. W of Arcata Comment
  UC1174843  Vaccinium ovatum P. C. Everett and E. K. Balls 1959-10-26 23974 Humboldt 4 mi se Honeydew (along Old Coast Road to Ettersburg) 457 Comment
  UCD166883  Vaccinium ovatum Colleen Rossier 2016-9-16 1 Humboldt In vicinity of Red Cap Road, upper side of road, plot Red Cap #1. 264 Comment
  CAS-BOT-BC199405  Vaccinium parvifolium Doris K. Kildale; J. W. Gillespie 1929-6-25 8393 Humboldt Pines Pasture, Eureka Comment
  LA44792  Vaccinium parvifolium Carl Epling; William Robison 1935-7-22 sn Humboldt Patrick's Point Comment
  UC1121143  Vaccinium parvifolium A. E. Wieslander 1931-5-19 205 Humboldt Near Orleans; Klamath Forest, Hoopa Quad. Comment
  UC32645  Vaccinium parvifolium J. Burtt Davy 1899-6-18 5608 Humboldt Bald Mt., near Korbel; North Coast Ranges Comment
  UC562450  Vaccinium parvifolium Joseph P. Tracy 1927-6-12 8133 Humboldt Horse Mountain 1432 Comment
  UC562494  Vaccinium parvifolium Joseph P. Tracy 1927-5-15 8057 Humboldt On road west from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  HSC100480  Vaccinium parvifolium Carl C. Marshall May 1886 217 Humboldt Woods, Humboldt Bay. Comment
  HSC7928  Vaccinium scoparium D. E. Anderson 1965-6-1 3758 Humboldt Horse Mtn., near ski lodge 1433 Comment
  HSC44529  Valeriana sitchensis subsp. sitchensis Brad Klipfel 1973-7-1 137 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC212729  Valeriana sitchensis subsp. sitchensis Joseph P. Tracy 1919-9-18 5230 Humboldt Trinity Summit; Northern Coast Ranges 1828 Comment
  HSC3383  Vancouveria hexandra Frances Oldridge 1946-1 Humboldt Eureka Comment
  RSA0007780  Vancouveria hexandra Larry E. DeBuhr, Gary Wallace 1972-5-22 611 Humboldt Prairie Creek, Redwoods State Park, along Davidson Rd. Comment
  CAS-BOT-BC76086  Vancouveria planipetala L. R. Abrams 1918-6-16 7189 Humboldt Willow Creek. Comment
  HSC73140  Vancouveria planipetala M. A. Baker 1980-5-18 1294 Humboldt Near Black Mtn. 1006 Comment
  HSC38742  Vancouveria planipetala J. D. Ackerman 1975-6-18 468 Humboldt Big Hill Rd., 7.9 mi. E of Hoopa and Hwy. 96 Comment
  JEPS51168  Velezia rigida W. L. Jepson 1902-7-25 2120 Humboldt Hupa Valley Supply Creek (Supply Creek); , Supply Creek Comment
  UC429307  Veratrum californicum var. californicum P. E. Goddard 1906-6 690 Humboldt Lassick Pk. Comment
  HSC57172  Veratrum insolitum Overton, Butler 1979-7-26 9981 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  SD51275  Veratrum insolitum Darley F. Howe 1961-8-2 3124 Humboldt 24 miles east of Orick, on Bald Mountain Road. 914 Comment
  HSC21173  Verbascum thapsus H. D. Sumner 1959-7-13 Humboldt Redwood Creek near Hwy. 299 305 Comment
  HSC67839  Verbena lasiostachys J. P. Smith 1971-10-9 5027 Humboldt Mad River above the Fish Hatchery. Comment
  HSC100685  Veronica americana Carl C. Marshall May 1885 118 Humboldt Along brooks, ditches etc. Comment
  SEINET10547645  Veronica americana Charlene A. Bennett 1976-8-6 Bennett 482 Humboldt Collected by hwy 101, n side of orick. Rocky area, densely forested by river. 30 Comment
  UC1222425  Veronica peregrina subsp. xalapensis Joseph P. Tracy 1925-5-30 7016 Humboldt 3 mi w of Bridgeville (Kemp's Ranch); Kemp's Ranch 198 Comment
  SEINET6988462 Image available Veronica peregrina var. xalapensis Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  HSC15258  Vicia americana var. americana J. P. Tracy 1935-5-26 13908 Humboldt Iaqua 610 Comment
  HSC56369  Vicia americana var. americana Terry Griswold, Butler 1979-7-11 6390 Humboldt Near Snow Camp Mountain 1320 Comment
  HSC58021  Vicia americana var. americana G. L. Clifton 1979-7-31 11826 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  JEPS66131  Vicia americana var. americana Lincoln Constance 1934-6-12 873 Humboldt Dyerville South Fork Eel River, Bull Creek Region (Bull Creek road and n bank of South Fork Eel River) Comment
  HSC89497  Vicia gigantea P. A. Daly 1984-5-8 3 Humboldt Trinidad Head 61 Comment
  POM68420  Vicia gigantea Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  RSA168921  Vicia hirsuta Joseph P. Tracy 1943-7-1 17428 Humboldt Vacant lot, 7th and I Streets, Eureka. (Same place as no. 17474). Comment
  UC162799  Vicia sativa subsp. nigra J. P. Tracy 1901-6-30 1202 Humboldt immediate vicinity Eureka 0 Comment
  HSC15256  Vicia sativa subsp. nigra J. R. Eichelberger 1964-5-3 41 Humboldt 2 mi. N of Fieldbrook Comment
  HSC31808  Vicia sativa subsp. sativa Donald Spalinger 1974-4-25 22 Humboldt Forest across from 1756 Ridgewood Dr. 122 Comment
  UC17027  Vicia sativa subsp. sativa Joseph Burtt Davy and Walter C. Blasdale 1899-5 5548 Humboldt near Scotia Comment
  HSC39995  Vicia sativa subsp. sativa J. P. Smith, J. O. Sawyer 1975-5-31 8145 Humboldt Samoa Peninsula adjacent to Redwood Workshop Area. Comment
  RSA755058  Vicia villosa Robert F. Thorne, Percy C. Everett 1965-8-8 35254 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  UC1761500  Viola Milo S. Baker 1923-7-30 157 Humboldt near Fredericksons Ranch, Eureka-Bridgeville Hwy Comment
  CAS-BOT-BC263952  Viola adunca L. B. Kildale 1926-3-30 1537 Humboldt Big Lagoon Comment
  HSC21756  Viola adunca D. E. Anderson 1961-10-1 1856 Humboldt E side of Freshwater Lagoon Comment
  HSC21758  Viola adunca F. B. Plett 1963-3-9 5 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  HSC21762  Viola adunca D. E. Anderson 1963-5-25 2492 Humboldt Ca. 2 mi. S of Capetown Comment
  HSC73065  Viola adunca M. A. Baker 1980-6-16 1948 Humboldt Near Onion Mtn. 1280 Comment
  RSA12423  Viola adunca Carl B. Wolf 1934-7-2 5871 Humboldt At edge of small lake at Snow Camp. (Mts. east of Korbel). 1372 Comment
  UC707010 Image available Viola californica Milo S. Baker 1946-6-14 11492 Humboldt Miller Spring South Fork Mt.; S Fork of Miller Spring, Humboldt Co. 1524 Comment
  HSC55596  Viola cuneata Overton, Butler 1979-7-23 9407 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC21785  Viola glabella Frances Oldridge 1946-1 Humboldt Eureka Comment
  HSC97583  Viola glabella Cara Witte 2007-5-23 100 Humboldt Near Grouse Mtn. Along 4N32. Approximately 0.5 mi. S of intersection with 5N04 and 4N32E. 1398 Comment
  UC502964  Viola glabella Joseph P. Tracy 1927-6-12 8153 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1219 Comment
  CAS-BOT-BC536494  Viola glabella Doris K. Kildale 1927-3-22 2939 Humboldt North fork of Elk River Comment
  HSC97173  Viola glabella Yun Chan, Renee Meyer, Sophary Yun 2007-6-13 11 Humboldt 1 mi. E of Hwy. 299 on F.S. Rd. NF1; Grouse Mtn. Meadow 1585 Comment
  RSA24186  Viola glabella Carl B. Wolf 1941-3-1 9980 Humboldt 0.2 mi NE of Strongs Station (on the Van Duzen River) on rd to Yaeger. 61 Comment
  CAS-BOT-BC530124  Viola lobata subsp. integrifolia Doris Kildale 1931-5-10 10577 Humboldt Snow Camp Comment
  HSC71727  Viola ocellata M. A. Baker 1980-6-26 2456 Humboldt Near Sims Creek 610 Comment
  HSC81588  Viola ocellata Thomas W. Nelson, Jane P. Nelson 1980-5-25 5263 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  HSC71027  Viola ocellata Thomas W. Nelson 1977-4-20 3319 Humboldt Along FS 1N15 between Hwy. 36 and summit 915 Comment
  CHSC68506  Viola odorata Vernon H. Oswald 1997-4-10 8329 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  HSC71814  Viola purpurea subsp. purpurea Thomas W. Nelson, Jane P. Nelson 1980-6-27 5953 Humboldt Six Rivers National Forest. Saddle between two peaks E of Mt. Lassic 1768 Comment
  UC963849  Viola sempervirens H. E. and S. T. Parks April, 1944 24268 Humboldt Spruce Cove; North Coast Ranges, Trinidad, Spruce Cove 60 Comment
  HSC34806  Viola sempervirens Lon Hall 1975-3-27 301 Humboldt Near Shelter Cove, above Bear Creek 366 Comment
  SEINET200824 Image available Viola sheltonii J. P. Tracy 1913-6-17 4187 Humboldt Buck Mountain near the summit Comment
  UC165807  Vitis californica Joseph P. Tracy 1911-7-5 3333 Humboldt Willow Creek Northern Coast Ranges ((tributary of Trinity River), near its mouth) 152 Comment
  HSC79420  Vulpia bromoides Kenneth Clark 1980-4-18 584 Humboldt On western bluffs above Dead Man's Gulch. 137 Comment
  HSC9838  Vulpia bromoides J. W. Johnson 1962-4-29 1303 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  UCD93441  Vulpia bromoides Linda M. Barker 1976-4-30 1398 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC184235  Vulpia microstachys var. pauciflora S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3431 Humboldt Northwest slopes of Buck Mountain 822 Comment
  RSA121356  Vulpia microstachys var. pauciflora H. L. Person 1932-5-11 s.n. Humboldt Near Arcata 0 Comment
  UC1145191  Vulpia microstachys var. pauciflora Joseph P. Tracy 1936-7-5 15039 Humboldt Grouse Mountain 1524 Comment
  UC1145192  Vulpia microstachys var. pauciflora Joseph P. Tracy 1942-6-23 17224 Humboldt 1 mi w Mud Springs; Trinity Summit 1158 Comment
  RSA10073  Vulpia microstachys var. pauciflora Joseph P. Tracy 1925-5-17 6985 Humboldt Trinity River Valley, near the South Fork. 183 Comment
  UC38479  Vulpia myuros var. hirsuta Harley P. Chandler May 1901 1120 Humboldt Humboldt Bay; North Coast Ranges 30 Comment
  CHSC68557  Whipplea modesta Vernon H. Oswald 1997-4-29 8356 Humboldt Humboldt Bay NWR, Hookton Slough Trail on the levee along the south side of Hookton Slough. On the edge of the trail. 0 Comment
  HSC55640  Whipplea modesta Overton, Butler 1979-7-24 9691 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  JEPS25683  Whipplea modesta P. C. Hutchison 1961-5-22 2008 Humboldt on US 299 14.3 mi e Arcata junction with hiway US 101 Comment
  HSC6317  Wyethia angustifolia D. E. Anderson 1963-5-25 2484 Humboldt 2-3 mi. N of Capetown Comment
  SBBG36549  Wyethia angustifolia H. and M. Dearing 1939-6-23 3695 Humboldt 20 mi E of Arcata Comment
  HSC73870  Wyethia longicaulis Gail Newton 1980-7-14 1462 Humboldt Near Last Chance Ridge. 1219 Comment
  JEPS37537  Xanthium strumarium Lincoln Constance 1934-6-12 865 Humboldt n bank South Fork Eel River (Dyerville, Bull Creek Road, Bull Creek Region); n bank South Fork Eel River, Bull Creek Region, Dyerville Comment
  HSC26270  Zigadenus venenosus var. venenosus Thomas W. Nelson 1971-5-31 450 Humboldt 915 Comment
  HSC104124  Zostera marina Justin Garwood 2015-7-5 Humboldt Comment
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Mar 1 2018



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