Search Results — 2000 specimen records retrieved (1351 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-BC77966  Abies concolor Doris K. Kildale 1930-8-3 10358 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  JEPS47996  Abies magnifica var. magnifica W. L. Jepson 1902-7-16 2043 Humboldt Trinity Summit 2133 Comment
  CAS-BOT-BC383850  Abronia latifolia Ira L. Wiggins 1930-7-7 4672 Humboldt Near Samoa Comment
  CHSC55899  Abronia latifolia L. P. Janeway 1987-7-31 2542 Humboldt Vicinity of Eureka; North spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  HSC59741  Abronia latifolia Clark L. Miller 1979-5-9 6117 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  CAS-BOT-BC233751  Abronia umbellata Doris K. Kildale 1926-6-18 2401 Humboldt Gold Bluffs Beach Comment
  POM264508  Abronia umbellata subsp. breviflora H. E. Parks 1941-09 24212 Humboldt Mouth of Little River. Comment
  HSC41124  Abronia umbellata var. breviflora Thomas W. Nelson, Jane P. Nelson, James Nelson 1976-9-26 3265 Humboldt Along beach S of Fern Canyon. Comment
  CAS-BOT-BC330540  Acer circinatum Doris K. Kildale 1925-6-28 836 Humboldt Lawrence Creek near bridge on Kneeland--Iaqua road 609 Comment
  POM17173  Acer circinatum J. B. Feudge 1923-7-25 54 Humboldt Fortuna 23 Comment
  UC249585  Acer circinatum Joseph P. Tracy 1922-5-29 6061 Humboldt South Yager Creek Northern Coast Ranges, South Yager Creek 762 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
  HSC60003  Acer macrophyllum M. A. Baker 1978-5-6 466 Humboldt Junction of Bald Hills Rd. with French Camp Rd. Comment
  CAS-BOT-BC28587  Achillea millefolium David D. Keck 1938-8-5 4775 Humboldt Big Lagoon Comment
  UC1125415  Achillea millefolium H. L. Person 1931-7-30 19358 Humboldt Fieldbrook; Eureka Quad. Comment
  CAS-BOT-BC28584  Achillea millefolium John Thomas Howell 1931-6-17 6718 Humboldt Mouth of Van Duzen River Comment
  RSA50430  Achillea millefolium var. arenicola G. R. Campbell 1949-6-28 s.n. Humboldt Collected near pool on Administration Grounds of Botanic Gardens, grown under prop. No. 5487 (seed collected by P. C. Everett, July 20, 1947, on coastal sand dunes, mouth of little river, along hwy 101, north of Eureka) Comment
  UC1225749  Achlys californica Joseph P. Tracy 1946-6-23 17594 Humboldt Kneeland Prairie 762 Comment
  HSC56973  Achlys triphylla Overton, Butler 1979-7-23 9506 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC57026  Achlys triphylla Overton, Butler 1979-7-24 9647 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC73179  Achlys triphylla M. A. Baker 1980-5-18 1295 Humboldt Near Black Mtn. 1006 Comment
  CAS-BOT-BC400025  Achlys triphylla Joseph P. Tracy 1933-5-21 12208 Humboldt North Coast Ranges. McClellan Mt. 670 Comment
  CAS-BOT-BC216455  Achnatherum occidentale subsp. californicum Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Moutnain Trail 1524 Comment
  UC212861  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1919-9-23 5285 Humboldt summit of ridge Northern Coast Ranges, Trinity Summit 1828 Comment
  UCD103953  Acmispon americanus var. americanus W. A. Williams 1951-6-15 s.n. Humboldt 10 miles E of Arcata. Comment
  BLMAR183  Acmispon brachycarpus Donald Hazlett 1994-6-7 183 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC37971  Acmispon micranthus Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  HSC76515  Acmispon micranthus Denis Kearns 1981-7-8 160 Humboldt Near Bluff Creek 622 Comment
  HSC98304  Acmispon micranthus R. J. Vernimen 1963-4-27 37 Humboldt 0.5 mi. off Samoa Rd., behind the Georgia-Pacific dump, 7.5 mi. SW of Arcata. Comment
  UC1222584  Aconitum columbianum Joseph P. Tracy 1950-7-31 19242 Humboldt n.e. side of top Grouse Mt. 1524 Comment
  UC1196186  Actaea rubra Joseph P. Tracy 1901-7-31 1230 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC44521  Adenocaulon bicolor Brad Klipfel 1973-7-1 128 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC164786  Adenocaulon bicolor J. P. Tracy 1900-7-22 904 Humboldt immediate vicinity Eureka 0 Comment
  HSC13040  Adiantum aleuticum C. Kline, D. Santana Oct 1970 44 Humboldt HSC Campus Comment
  HSC54522  Adiantum aleuticum Overton, Butler 1979-7-23 9453 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  POM347034  Adiantum aleuticum Lyman Benson 1928-7-13 487 Humboldt Weatt Ranger Station 61 Comment
  POM182456  Adiantum jordanii Joseph P. Tracy 1914-5-14 4427 Humboldt Hook Stream banks 122 Comment
  UC1199009  Aesculus californica Joseph P. Tracy 1912-7-4 3727 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC249587  Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville; Northern Coast Ranges 304 Comment
  HSC57973  Agastache urticifolia G. L. Clifton, Griswold 1979-7-31 11698 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1239671  Agastache urticifolia Joseph P. Tracy 1939-8-5 16387 Humboldt Dinsmore's 731 Comment
  UC577348  Agastache urticifolia Joseph P. Tracy 1932-7-13 10498 Humboldt Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC57003  Agoseris grandiflora Overton, Butler 1979-7-24 9589 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC70406  Agoseris grandiflora M. A. Baker 1980-6-7 1842 Humboldt Near Ammon Creek 732 Comment
  HSC98959  Agoseris grandiflora Cara Witte 2008-7-28 956 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1592 Comment
  UC176417  Agoseris grandiflora var. grandiflora J. P. Tracy 1904-7-4 2110 Humboldt immediate vicinity Eureka 0 Comment
  UC1196558  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1935-7-14 14078 Humboldt top of ridge Grouse Mountain; North Coast Ranges 1524 Comment
  CAS-BOT-BC15348  Agoseris heterophylla J. P. Tracy 1906-5-13 2455 Humboldt Sand hills of Ocean Beach at Samoa, opp. Eureka Comment
  UCD128605  Agoseris heterophylla K. Esau 1934-5-6 s.n. Humboldt above Fort Seward. 457 Comment
  HSC98543  Agoseris heterophylla Cara Witte 2008-6-7 684 Humboldt Along National Forest 1. Approximately 4 miles south of intersection National Forest 1 and 5N04. 1441 Comment
  UC582741  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1933-5-30 12417 Humboldt (near Garberville) Redway 152 Comment
  UC249842  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6280 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 304 Comment
  RSA129700  Agrostis capillaris H. S. Yates 5685 Humboldt Near Bayside 9 Comment
  CAS-BOT-BC127458  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon. 6 Comment
  CAS-BOT-BC127279  Agrostis exarata Joseph P. Tracy 1927-6-19 8193 Humboldt Northern Coast Region. Big Lagoon. 6 Comment
  UC1103389  Agrostis exarata Joseph P. Tracy 1950-7-16 19048 Humboldt open grassy flats Trinidad 3 Comment
  CHSC69848  Agrostis hallii Leonel Arguello 1989-8-20 Humboldt Collected at the Lanphere-Christensen Dunes Preserve 3 miles west of Arcata. Growing alongside North Dune Loop trail about 40 yards from the Salt Marsh trail. Comment
  HSC64165  Agrostis hallii J. O. Sawyer, K. A. Sawyer 1979-6-24 3409 Humboldt Slopes alongside Aikens Creek. 366 Comment
  UCD52704  Agrostis hallii Ray Evans 1956-7-19 s.n. Humboldt Bear River Ridge, 9 miles west of Ferndale. Comment
  UCD52807  Agrostis idahoensis Joseph P. Tracy 1950-7-31 19243 Humboldt Grouse Mountain. 1615 Comment
  HSC89897  Agrostis microphylla Leonel Arguello 1989-7-7 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi W of Arcata, south-west quadrant of Fernstrom-Root parcel. Comment
  CAS-BOT-BC139128  Agrostis oregonensis Joseph P. Tracy 1930-7-16 8904 Humboldt Northern Coast Ranges. South Fork Mountain. Near McKay Camp. 1676 Comment
  UC552750  Agrostis oregonensis Joseph P. Tracy 1934-7-13 13392 Humboldt Dows Prairie North Coast Ranges 60 Comment
  CAS-BOT-BC138636  Agrostis stolonifera Carl B. Wolf 1927-8-28 1189 Humboldt Eureka Bay, on the road to Arcata. Comment
  HSC8810  Agrostis stolonifera C. B. Wolf 1927-8-27 1189 Humboldt Eureka Bay, on the road from Eureka to Arcata. Comment
  SEINET3917179  Agrostis stolonifera Thomas Nelson, James Nelson 1976-7-28 3046 Humboldt West of alder Springs along 2S08.; 0 1554 Comment
  HSC8857  Aira caryophyllea Yarick 1960-8-3 Humboldt K & K. 7 mi, Krueger Cr. Comment
  CAS-BOT-BC138337  Aira caryophyllea var. caryophyllea W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula. Comment
  CAS-BOT-BC138196  Aira praecox Joseph P. Tracy 1925-6-13 7099 Humboldt Northern Coast Ranges. Eureka. 60 Comment
  HSC8867  Aira praecox J. W. Johnson 1961-9-4 1100 Humboldt Aracta, Samoa Peninsula, Christenson Farm Comment
  UC1198190  Allium acuminatum Joseph P. Tracy 1911-7-11 3511 Humboldt hills near mouth of Supply Creek; Northern Coast Ranges, Hoopa Valley 182 Comment
  CAS-BOT-BC460750  Allium amplectens Doris K. Kildale 1926-5-9 2000 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC462971  Allium bolanderi Carl Purdy 1933-6-1 s.n. Humboldt Redwood Creek Comment
  JEPS56361  Allium bolanderi W. L. Jepson 1902-7-1 1978 Humboldt Three Creeks to Willow Creek Comment
  HSC78654  Allium campanulatum D. K. Imper 1982-7-2 1490 Humboldt Near Connely Creek, N Fork 1493 Comment
  HSC102617  Allium cratericola M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1604 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  UC1198201  Allium falcifolium Joseph P. Tracy 1933-7-25 12891 Humboldt Grouse Mountain 1524 Comment
  UC1198189  Allium unifolium J. P. Tracy 1911-5-30 3209 Humboldt immediate vicinity of Eureka (bluff back of Bucksport); Bucksport 0 Comment
  UCD138614  Allium unifolium K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 457 Comment
  HSC102015  Allium validum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 916 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  CAS-BOT-BC171311  Alnus incana subsp. tenuifolia Milo S. Baker 1927-8-21 2487 a Humboldt Brush Mt. 914 Comment
  JEPS58618  Alnus rhombifolia W. L. Jepson 1902-7-29 2123 Humboldt Supply Creek Hupa Valley 243 Comment
  CAS-BOT-BC169545  Alnus rubra Joseph P. Tracy 1930-7-27 9113 Humboldt Mattole River, near Petrolia 15 Comment
  HSC81811  Alnus rubra Kenneth Clark 1980-6-14 692 Humboldt N Fork of Dead Man's Gulch; throughout Shelter Cove 61 Comment
  RSA24390  Alnus rubra C. B. Wolf 1941-2-22 9917 Humboldt Along Redwood Highway 2.8 miles south of Patricks Point State Park 30 Comment
  UC198600  Alnus rubra Joseph P. Tracy 1917-10-28 4859 Humboldt North Fork of Eel River Northern Coast Ranges, around Humboldt Bay 91 Comment
  UC527557  Alnus rubra C. B. Wolf 1931-8-28 2366 Humboldt Redwood Hwy 4 1/2 mi n of Fortuna Fortuna (on road to Eureka) 15 Comment
  HSC8884  Alopecurus geniculatus True Hoyle 1967-7-15 28267 Humboldt Dolson Ranch, 225 Bayside Rd., Arcata, next to Grade A milking barn 152 Comment
  HSC8898  Alopecurus geniculatus W. F. Cartwright 1965-5-20 77 Humboldt 5 mi. S of Arcata on Old Arcata Rd. Comment
  CAS-BOT-BC13711  Ambrosia chamissonis David D. Keck 1935-6-16 3385 Humboldt Mouth of Little River. Comment
  HSC2176  Ambrosia chamissonis H. E. Parks Aug 1941 24181 Humboldt Big Lagoon Comment
  HSC74335  Amelanchier alnifolia Gail Newton 1980-6-16 152 Humboldt Near Monks Camp 1097 Comment
  CAS-BOT-BC142888  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-5-14 3193 Humboldt Big Lagoon Comment
  HSC70685  Amelanchier alnifolia var. semiintegrifolia Gail Newton 1980-7-15 1574 Humboldt Near Sims Mtn. 1311 Comment
  HSC55636  Amelanchier pallida Overton, Butler 1979-7-24 9662 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC56096  Amelanchier pallida G. L. Clifton 1979-7-31 11803 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC56327  Amelanchier pallida Overton, Butler 1979-8-2 12680 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC1198750  Amelanchier utahensis Joseph P. Tracy 1912-5-5 3579 Humboldt Eureka Northern Coast Region (at the Azalea Block) 0 Comment
  RSA86667  Ammophila arenaria F. W. Peirson 1941-7-29 13112 Humboldt Little River Beach State Park. Comment
  UC153944  Anagallis arvensis J. P. Tracy 1906-6-17 2490 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC45131  Anaphalis margaritacea Alice Eastwood 1923-8-14 12304 Humboldt Samoa Comment
  HSC98655  Anaphalis margaritacea Cara Witte 2007-7-26 596 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1438 Comment
  SEINET11855259  Anaphalis margaritacea Unknown 1933-1 Humboldt Eureka Comment
  HSC102001  Anemone deltoidea M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 902 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC55868  Anemone deltoidea G. L. Clifton, Griswold 1979-7-25 10891 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC162853  Anemone deltoidea Joseph P. Tracy 1906-5-6 2444 Humboldt near Hydesville; North Coast Ranges 182 Comment
  UC502926  Anemone deltoidea Joseph P. Tracy 1932-7-13 10489 Humboldt near Corral Prairie (Trinity Summit); Klamath Mtns, Trinity Summit 1524 Comment
  CAS-BOT-BC391789  Anemone deltoidea Henry M. Pollard 1948-7-31 s.n. Humboldt Under Mt Orleans summit 1828 Comment
  CAS-BOT-BC391870  Anemone grayi Doris K. Kildale 1928-5-1 5984 Humboldt MacLellan Mountain 914 Comment
  HSC99580  Angelica genuflexa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 245 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
  UC1197382  Angelica genuflexa Joseph P. Tracy 1946-8-25 17635 Humboldt 2 mi s of Fields Landing (near Still Ranch) 6 Comment
  UC673053  Angelica genuflexa Joseph P. Tracy 1940-9-26 16725 Humboldt Eureka, near south city limits Eureka 6 Comment
  JEPS12244  Angelica hendersonii Joseph P. Tracy 1938-8-28 16133 Humboldt Trinidad 3 Comment
  UCD127229  Angelica hendersonii R. Tofsrud 1948-7-26 s.n. Humboldt along Highway 101 near Big Lagoon. Comment
  HSC71330  Angelica lucida J. M. DiTomaso 1980-6-7 1571 Humboldt Elkshead, N of Trinidad. Comment
  UC154250  Angelica lucida Joseph P. Tracy 1909-9-19 3087 Humboldt Region about Humboldt Bay (near Samoa, Northern Coast Region); Northern Coast Region 0 Comment
  UC642238  Angelica tomentosa Joseph P. Tracy 1938-8-14 16107 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  HSC56443  Antennaria howellii Griswold, Butler 1979-7-12 7190 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC205188  Antennaria media Joseph P. Tracy 1919-9-24 5293 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  HSC4648  Antennaria suffrutescens D. E. Anderson 1963-9-21 2845 Humboldt Grouse Mtn. Rd Comment
  JEPS89480  Antennaria suffrutescens Dean W. Taylor 1991-8-15 12303 Humboldt ridge 1 mi. w. Horse Mt.; N. Coast Ranges 1493 Comment
  UC1222874  Antennaria suffrutescens Joseph P. Tracy 1947-7-9 17864 Humboldt Horse Mountain 1432 Comment
  RSA10084  Anthoxanthum odoratum Joseph P. Tracy 1925-7-5 7164 Humboldt High Prairie, on Bald Mountain. 1067 Comment
  UC1103320  Anthoxanthum odoratum Joseph P. Tracy 1926-4-17 7412 Humboldt Northern Coast Ranges, Eurek Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC104450  Anthriscus caucalis Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 3 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  SD120899  Antirrhinum vexillocalyculatum subsp. breweri David M. Thompson 1983-6-30 359 Humboldt Willow Creek. Forest Service Road 10N02 (to Waterman Ridge and Horse Linto Creek), 0.8 miles N of junction with Sunset Pl. 2.7 miles from start of Patterson Road(at end of River Road, 0.9 miles from Hwy. 299 in Willow Creek 213 Comment
  UC1196739  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1946-11-17 17665 Humboldt Eel River at mouth of Van Duzen River; Eel River 18 Comment
  UC1198738  Aphanes occidentalis J. P. Tracy 1905-5-21 2184 Humboldt immediate vicinity Eureka 0 Comment
  UC1198743  Aphanes occidentalis Joseph P. Tracy 1934-3-11 13149 Humboldt Weitchpec 121 Comment
  JEPS49816  Apocynum cannabinum Lincoln Constance 1934-6-11 848 Humboldt trail along e. bank of S. Fork of Eel N. Dyerville Flat; S. Fork Eel R., Bull Creek Region, N. Dyerville Flat Comment
  UCSB1939  Aquilegia formosa Phillips, Priscilla 1958-6-7 Humboldt Just off Highway 101 on road to Big Lagoon Park Comment
  HSC103965  Arabis breweri var. breweri A. Thoele, Sydney Carothers 1995-7-13 39 Humboldt Six Rivers National Forest; Potato Hill, NE side of Pilot Creek. Take SR1 to jct. with 3N14, walk NW 1.4 mi., then SW 1/3 mi. down ridge 1498 Comment
  HSC57418  Arabis divaricarpa var. interposita G. L. Clifton, Griswold 1979-7-26 10181 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC57318  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-7-26 9373 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC3251  Aralia californica D. E. Anderson 1962-9-14 2337 Humboldt Fish Lake area Comment
  HSC99596  Aralia californica Overton, Butler 1979-7-24 14090 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  CDA38202  Aralia californica T. Gallion & M. S. Bergseng 1959-7-23 2816 Humboldt Red Gap Road, 3 miles east of Hoopa. 0 Comment
  UC933379  Aralia californica Annie M. Alexander and Louise Kellogg 1948-9-3 5587 Humboldt Trinity R. near Hoopa Reservation; Trinity R. Comment
  HSC30336  Arbutus menziesii Dale R. Gradek 1974-5-22 92 Humboldt 1 mi. E of Hwy. 101 on North Bank Rd. 30 Comment
  HSC7598  Arbutus menziesii D. E. Anderson 1962-3-17 1932 Humboldt ca. 3 mi. W of Bridgeville. On S facing bank above the Van Duzen River Comment
  HSC7602  Arbutus menziesii Dan O'Brien 1962-5-19 Humboldt 4 1/2 mi. E on Fickle Hill Rd. Comment
  HSC71803  Arceuthobium campylopodum M. A. Baker 1980-6-26 2381 Humboldt Near Sims Creek 610 Comment
  UC672852  Arceuthobium campylopodum Joseph P. Tracy 1932-7-14 10571 Humboldt ridges e of Corral Prairie Trinity Summit 1676 Comment
  SEINET11853818  Arctium minus J. P. Tracy 1950-1 19351 Humboldt Occasional at Beatrice, 3 mi S of Field's Landing Comment
  UC1225937  Arctostaphylos X media Joseph P. Tracy 1945-3-30 17505 Humboldt Eureka 45 Comment
  HSC100848  Arctostaphylos canescens J. P. Smith, J. O. Sawyer 2010-5-4 12813 Humboldt Along Bald Hills Road. 930 Comment
  CAS-BOT-BC24092  Arctostaphylos canescens subsp. canescens L. R. Abrams 1918-6-15 7112 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  CAS-BOT-BC25215  Arctostaphylos canescens subsp. canescens Clarence Roy Quick 1959-7-24 96 .59-40. Humboldt Bee Mt., ca. 12 miles SW of Orleans Comment
  SEINET11995492  Arctostaphylos canescens var. sonomensis W. Knight, Knight, I. 1988-1 s.n. Humboldt on embankment between Summit Rd junction & electronic towers at Summit, Horse Mt. Recreational Area Comment
  CAS-BOT-BC23740  Arctostaphylos columbiana C. Hart Merriam 1921-8-21 s.n. Humboldt 2 miles north of Trinidad Comment
  CAS-BOT-BC23761  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13134 Humboldt Vicinity of Trinidad Comment
  CAS-BOT-BC23799  Arctostaphylos columbiana E. K. Balls; L. W. Lenz 1955-5-16 20746 Humboldt 24.6 mie. SE of Shelter Cove, Coast Road to Rockport 457 Comment
  HSC7623  Arctostaphylos columbiana R. Spellenberg, D. Sutherland, A. Sylvester 1966-3-28 1381 Humboldt Lord Ellis Summit on Hwy. 299, about 7 mi. W of Redwood Creek Comment
  HSC7723  Arctostaphylos columbiana H. E. Parks Feb 1933 3985 Humboldt Spruce Cove, Trinidad Comment
  SBBG58415  Arctostaphylos columbiana H. E. Parks 1931-3-25 917 Humboldt near Patrick's Pt Comment
  UC154196  Arctostaphylos columbiana Joseph Burtt Davy and Walter C. Blasdale 1899-5 Humboldt Fruitland Comment
  UC535005  Arctostaphylos columbiana H. E. Parks December 1931 4950 Humboldt Hobson's Trinidad 60 Comment
  CAS-BOT-BC23735  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of the Van Duzen River. Comment
  RSA381132  Arctostaphylos columbiana var. columbiana Roman Gankin, W. Richard Hildreth 1967-10-26 1171 Humboldt 21.4 miles east of US 101 on Bald Hills Road from Orick. French Camp Ridge. Comment
  RSA632802  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27765 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  CAS-BOT-BC38831  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1926-6-27 2198 Humboldt Sweasey Lake - McClellan Mountain 792 Comment
  UC153967  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1909-10-7 3112 Humboldt Gans Prairie Northern Coast Ranges 609 Comment
  UC32672  Arctostaphylos nevadensis Chesnut and Drew 1888-7-21 Humboldt e slope S. Fork Mt. Comment
  CAS-BOT-BC40063  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1936-8-2 15075 Humboldt French Camp Ridge 1066 Comment
  UC600967  Arctostaphylos patula Joseph P. Tracy 1937-7-29 15600 Humboldt South Fork Mt. 1676 Comment
  CAS-BOT-BC43986  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17498 Humboldt Eureka 45 Comment
  POM212078  Arctostaphylos uva-ursi C. B. Wolf 1930-10-28 1035 Humboldt Samoa. 15 Comment
  UC1196867  Arctostaphylos uva-ursi Joseph P. Tracy 1947-8-31 17928 Humboldt near Samoa; Humboldt Bay 6 Comment
  SEINET11984848  Arctostaphylos uva-ursi Unknown 1965-1 555 Humboldt 1.3 mi S of Samoa, Samoa Peninsula Comment
  HSC67134  Arctostaphylos viscida J. P. Smith, J. O. Sawyer 1973-5-12 6696 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC384746  Arenaria serpyllifolia var. serpyllifolia Joseph P. Tracy 1933-5-18 12192 Humboldt Along Mad River, near Blue Lake 15 Comment
  HSC48067  Armeria maritima subsp. californica Thomas W. Nelson 1978-4-23 3879 Humboldt N of Samoa Comment
  HSC89499  Armeria maritima subsp. californica M. Roantree 1985-5-24 50 Humboldt N side of Trinidad Head on slope below trail. Comment
  RSA249359  Armeria maritima subsp. californica J. D. Ackerman 1974-5-25 267 Humboldt 0.25 mi S of Lufenholtz County Beach off Scenic Dr between Trinidad and Moonstone Beach. Comment
  HSC98121  Arnica cernua Cara Witte 2007-5-24 119 Humboldt Along National Forest 1. Approximately 1 mile south of intersection with 6N38 and 6N36. 1476 Comment
  UC1199254  Arnica cernua Joseph P. Tracy 1926-6-20 7625 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  UC582488  Arnica cordifolia Joseph P. Tracy 1935-7-30 14372 Humboldt top of ridge s of Red Cap Lake; Salmon Summit 2011 Comment
  HSC32237  Arrhenatherum elatius J. O. Sawyer 1970-6-24 2232 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  SEINET11853294  Artemisia douglasiana J. P. Tracy 1947-1 17892 Humboldt Trinity Summit at Box camp 1463 Comment
  HSC12354  Artemisia pycnocephala Steve Dorei 1970-10-7 146 Humboldt McKinleyville Comment
  SD41467  Artemisia pycnocephala Edith A. Purer 1932-7-27 4123 Humboldt Samoa Comment
  UCSB9161  Artemisia pycnocephala Parks, H.; Parks, S. 1952-06 Humboldt Samoa Comment
  RSA21583  Artemisia suksdorfii C. B. Wolf 1937-9-9 9303 Humboldt Coast, 4.5 mi S of Cape Mendocino. 6 Comment
  CAS-BOT-BC453343  Aruncus dioicus var. vulgaris Volney Rattan 1878-6-16 s.n. Humboldt Mad River Comment
  HSC44258  Asarum caudatum J. Walker 1977-4-23 13 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC1198117  Asarum caudatum Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3618 Humboldt near Hydesville 60 Comment
  UC6169  Asarum caudatum Harley P. Chandler May 1901 1267 Humboldt Redwood Belt 457 Comment
  HSC47656  Asarum caudatum Sheila Logan 1978-4-10 181 Humboldt Arcata Community Forest, near PSW Experimental Lab Comment
  HSC49821  Asarum caudatum R. York 1979-4-9 211 Humboldt Behind Humboldt State University Comment
  HSC62839  Asarum caudatum J. M. DiTomaso 1979-4-8 854 Humboldt Behind Humboldt State University campus, Arcata Comment
  RSA273341  Asclepias cordifolia Thomas W. Nelson, James Nelson 1976-5-30 2613 Humboldt McKeown Ranch north of Dinsmore. Comment
  CAS-BOT-BC65946  Aspidotis densa Carl D. Duncan 1920-9-22 s.n. Humboldt Trinity River, Hoopa Valley Comment
  UC53317  Aspidotis densa Joseph Burtt Davy 1899-6-19 5631 Humboldt Hoopa Mt Comment
  UC62541  Aspidotis densa Harley P. Chandler June, 1901 1380 Humboldt Hupa Indian Reservation; North Coast Ranges 152 Comment
  JEPS109802  Astragalus agnicidus Dean W. Taylor 2004-6-22 19115 Humboldt head of Scott Creek, flanks of Mt Baldy, Larabee Creek watershed 731 Comment
  UC1199092  Astragalus pycnostachyus var. pycnostachyus Joseph P. Tracy 1930-7-21 8891 Humboldt 3 mi s of point Cape Mendocino (southwestern slopes, fronting the ocean); Northern Coast Ranges, s Cape Mendocino 3 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
  JEPS109394  Astragalus umbraticus Dean W. Taylor 2009-7-14 20674 Humboldt vicinity Lake Prairie, reached via Guy Kerr Ranch Road off Snow Camp Road 1133 Comment
  UC179942  Astragalus umbraticus Joseph P. Tracy 1914-9-6 4598 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mt., betw High Prairie-Snow Camp 1219 Comment
  CAS-BOT-BC200852  Astragalus umbraticus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  RSA23653  Athyrium filix-femina subsp. cyclosorum C. B. Wolf 1939-7-6 9516 Humboldt Along Larabee Creek, 6 7/10 miles below Blocksberg on road to Bridgeville. 305 Comment
  UC1239778  Athyrium filix-femina var. cyclosorum Joseph P. Tracy 1923-8-7 6534 Humboldt Strong's Station; Northern Coast Ranges 60 Comment
  UC902198  Athyrium filix-femina var. cyclosorum Joseph P. Tracy 1949-8-26 18512 Humboldt ne of Hawkins Bar Happy Camp Mt; Trinity Summit Range 1280 Comment
  HSC70632  Athysanus pusillus R. York 1980-5-18 584 Humboldt Near Black Mtn 792 Comment
  UC526702  Avena fatua Joseph P. Tracy 1930-6-29 8824 Humboldt Buck Mountain Northern Coast Ranges (lower foothills of nw slope) Comment
  SEINET10668635  Baccharis Charlene A. Bennett, David B. Dunn; Chester T. Dziekanowski 1976-8-6 Bennett 486 Humboldt Collected by Hwy. 101, N side of Orick. Rocky area, densely forested by river. 30 Comment
  CAS-BOT-BC98771  Baccharis douglasii Carl B. Wolf 1927-8-30 1239 Humboldt Minor's Ranch, Union Matole, 6 mi. so. of Petrolia Comment
  UC164794  Baccharis glutinosa J. P. Tracy 1900-9-3 937 Humboldt immediate vicinity of Eureka 0 Comment
  UC1199296  Baccharis pilularis Joseph P. Tracy 1933-10-15 13099 Humboldt Miranda South Fork of Eel River 121 Comment
  HSC12350  Baccharis pilularis subsp. consanguinea Steve Dorei 1970-10-31 139 Humboldt Scotia Bluff area Comment
  HSC68159  Baccharis pilularis subsp. consanguinea J. P. Smith 1971-10-6 4963 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC64813  Barbarea verna J. P. Smith, Steve Selva 1970-6-30 4125 Humboldt Comment
  HSC6585  Barbarea verna D. E. Anderson 1962-3-31 1968 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  HSC7002  Barbarea verna W. F. Nickel 1965-4-22 Humboldt HSU campus between the Wildlife and Biological Science buildings Comment
  CDA38657  Bellardia trixago B. Villegas/D. Juliano 2010-6-17 PDR# 1535021 -A Humboldt Alderpoint: Garberville - Alderpoint Rd. 0 Comment
  JEPS84961  Bellis perennis Barbara Ertter with Thomas J. Delendick 1987-5-16 6917 Humboldt Hwy 299 roadside ca 8 mi e Arcata (9 1/2 mi w of Lord Ellis summit) 152 Comment
  HSC5189  Bellis perennis John A. Dubois 1962-5-23 20 Humboldt 20 miles East of Arcata Comment
  HSC62832  Bensoniella oregona William Davilla 1980-10-16 1219 Humboldt Snow Camp Mtn. 1390 Comment
  HSC35711  Berberis aquifolium Thomas W. Nelson 1975-10-12 2238 Humboldt McKeown Ranch, N of Dinsmore Comment
  CHSC23182  Berberis nervosa Robert F. Thorne; P. Everett 1965-8-5 35138 Humboldt Mt. Chamisal: Below summit. 533 Comment
  SDSU13768  Berberis nervosa D. F. Howe 1963-5-26 3555 Humboldt 3.2 miles east of Orick on Bald Hill Road. 457 Comment
  HSC45419  Bistorta bistortoides Thomas W. Nelson, Jane P. Nelson 1977-7-4 3595 Humboldt Margin of pond above Alder Springs 1585 Comment
  UC370622  Blechnum spicant H. E. Parks 1925-6-20 3231 Humboldt Orick Comment
  CAS-BOT-BC15788  Boechera acutina Joseph Prince Tracy 1932-7-11 10396 Humboldt Klamath Mountains. At Corral Prairie. 1524 Comment
  UC1198303  Boechera platysperma Joseph P. Tracy 1935-6-28 14325 1/2 Humboldt Head of Devils Hole Trinity Summit 1828 Comment
  RSA167245  Boisduvalia densiflora Joseph P. Tracy 1950-6-18 18843 Humboldt Cape Mendocino, near the ocean shore, south of point of the Cape: Davis Creek. 3 Comment
  HSC16669  Boschniakia strobilacea D. E. Anderson 1965-6-1 3773 Humboldt On ridge along Friday Hill Rd., about 2 mi. from its junction with Titlow Hill Rd. 1159 Comment
  CDA42735  Botrychium multifidum T. C. Fuller 1961-9-28 7054 Humboldt 1.5 miles south of Samoa. 0 Comment
  UC14481  Boykinia major Chesnut and Drew Aug. 1888 Humboldt head of Redwood Creek Comment
  CAS-BOT-BC420257  Boykinia occidentalis Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  HSC20181  Boykinia occidentalis H. E. Parks, S. T. Parks Jun, Jul 1952 24451 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC96467  Boykinia occidentalis Gordon Leppig 1997-6-19 464 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  POM89211  Boykinia occidentalis L. R. Abrams 1922-6-25 8285 Humboldt Big Lagoon, south of Orick. Comment
  SBBG26977  Boykinia occidentalis R. S. Ferris 1937-8-21 9390 Humboldt above beach, Shelter Cove Comment
  CAS-BOT-BC106290  Brickellia californica Doris K. Kildale 1926-8-29 2593 Humboldt Van Duzen River, near Strong's Station Comment
  CHSC20341  Briza maxima D. E. Anderson 1965-5-8 3626 Humboldt About 1 mile east of Blue Lake on Hw. 299. Comment
  UC1145097  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCD57367  Briza maxima R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  HSC9087  Briza maxima T. M. Mingo May 1965 Humboldt 0.25 mi. N of intersection of Fairhaven Dr. and old Hwy. 101 Comment
  HSC24375  Brodiaea elegans subsp. elegans J. O. Sawyer 1970-6-24 2245 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC1222692  Brodiaea elegans subsp. elegans Joseph P. Tracy 1950-7-31 19234 Humboldt near Clear Lake; Grouse Mountain, Buck Prairie 1573 Comment
  HSC3016  Brodiaea terrestris subsp. terrestris T. M. Mingo May 1965 Humboldt 100 ft. N of parking area at College Cove Comment
  CAS-BOT-BC484612  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1936-5-30 14837 Humboldt In firm grassy flats, edge of sand dunes. Near Samoa, on Humboldt Bay 6 Comment
  UC1197740  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1928-5-20 8441 Humboldt halfway between the ocean and Petrolia; Northern Coast Ranges, Mattole Valley 91 Comment
  UCD57869  Bromus carinatus Joseph P. Tracy 1936-6-17 14946 Humboldt Buck Mountain. 792 Comment
  SEINET201049 Image available Bromus carinatus var. carinatus Joseph P. Tracy 1925-7-5 7162 Humboldt High Prairie on Bald Mountain 1067 Comment
  SEINET943640  Bromus carinatus var. carinatus T. R. Van Devender, R. K. Van Devender 1990-1 90 -105 Humboldt Paticks Point State Park, near Trinidad Comment
  UC1103280  Bromus carinatus var. carinatus Joseph P. Tracy 1920-5-18 5326 Humboldt 5 mi above mouth of South Fork (along Eel River from South Fork to Scotia); Northern Coast Ranges, Eel River 60 Comment
  UC37672  Bromus carinatus var. carinatus J. Burtt Davy 1899-7-30 6179 Humboldt opposite Eureka (North Coast Ranges); North Coast Ranges Comment
  HSC40340  Bromus diandrus Linda M. Barker 1976-4-30 1403 Humboldt 3 mi. W of Arcata Comment
  HSC9285  Bromus diandrus R. E. Hafenfeld 1965-5-9 50 Humboldt Junction of County Rd. and Gold Bluff Beach Rd. Comment
  SEINET200636 Image available Bromus diandrus Joseph P. Tracy 1904-5-1 2042 Humboldt Eureka 0 Comment
  UC1714488  Bromus diandrus Joseph P. Tracy 1916-5-31 4702 Humboldt along Eel River from South Fork to Scotia, Stitz Creek Stitz Creek; Northern Coast Ranges, Eel River, Stitz Creek 60 Comment
  CAS-BOT-BC155424  Bromus hordeaceus Henry M. Pollard 1948-7-18 s.n. Humboldt Orleans. Comment
  HSC79464  Bromus hordeaceus Kenneth Clark 1980-4-18 610 Humboldt Along access trail to Dead Man's Gulch, above gulch. 137 Comment
  HSC9174  Bromus hordeaceus G. B. Kendall 1965-5-8 44 Humboldt Trinidad State Park Beach. Comment
  HSC75287  Bromus vulgaris J. O. Sawyer, M. A. Ericksen 1980-8-18 4059 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  UC1198279  Cakile maritima Joseph P. Tracy 1946-1-13 17517 Humboldt Centerville Beach 3 Comment
  UCD114939  Cakile maritima M. Barbour 1969-12-15 s.n. Humboldt South of Silver Strand State Beach. Comment
  RSA232640  Cakile maritima var. maritima Larry E. DeBuhr, P. Everett 1972-5-22 608 Humboldt On the beach at Prairie Creek. Redwoods Sate Park Comment
  UC37779  Calamagrostis foliosa H. N. Bolander 1866-6 6470 Humboldt Mattole District; bluffs along seashore; Mattole District, Humboldt Co. Comment
  UC153940  Callitriche marginata J. P. Tracy 1910-5-22 3137 Humboldt Immediate Vicinity of Eureka 0 Comment
  HSC62828  Callitriche stagnalis J. M. DiTomaso 1979-4-21 888 Humboldt Fresh water creek at Clam Beach, 9 mi. N of Arcata. Comment
  CAS-BOT-BC80380  Calocedrus decurrens Doris K. Kildale 1925-8-18 1252 Humboldt Trinity Summit - McKay's Cabin 1524 Comment
  CAS-BOT-BC80390  Calocedrus decurrens Doris K. Kildale 1926-9-5 2610 Humboldt Lasseck's Peaks - at Goat Camp 1661 Comment
  HSC76306  Calocedrus decurrens Teresa Prendusi 1981-7-9 224 Humboldt Near Cedar Camp 1256 Comment
  CAS-BOT-BC488455  Calochortus amabilis Doris K. Kildale 1926-5-16 2004 Humboldt Miranda on south fork of Eel River. Comment
  HSC15423  Calochortus monophyllus J. Wendell Howe 1236 Humboldt Comment
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Feb 11 2018
  HSC15345  Calochortus tolmiei Class 1937-4-29 Humboldt Miranda Comment
  HSC15406  Calochortus tolmiei J. P. Tracy, H. E. Parks 1934-6-27 7 Humboldt Grouse Mtn. 1372 Comment
  JEPS17825  Calochortus tolmiei Joseph P. Tracy 1932-5-10 9931 Humboldt Bear River Ridge 609 Comment
  CAS-BOT-BC494366  Calochortus tolmiei H. C. Cantelow 1941-4-19 36 Humboldt 2 1/2 mi. n. e. of Cape Town. Open hillside above ocean on rd. to Ferndale from Patrolia. Comment
  RSA167194  Calycadenia ciliosa Joseph P. Tracy 1948-9-20 18220 Humboldt Hoopa Valley 91 Comment
  UC127837  Calycadenia fremontii Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  CAS-BOT-BC273315  Calycadenia fremontii Henry M. Pollard 1945-8-31 s.n. Humboldt Orleans to Somes Bar east side of Klamath River Comment
  UC4379  Calypso bulbosa Harley P. Chandler June, 1901 1280 Humboldt North Coast Ranges, Hupa Indian Reservation Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 1097 Comment
  RSA381906  Calypso bulbosa Grinnell 1917-6-6 s.n. Humboldt Hoopa Indian Reservation Comment
  UCD138888  Calypso bulbosa var. occidentalis Julie Lortz 1966-5-14 66 -51 Humboldt 26 mile east of Willow Creek. 1219 Comment
  HSC97465  Calyptridium monospermum Cara Witte 2007-5-29 122 Humboldt Along National Forest 1. Approximately 4 miles south of intersection National Forest 1 and 5N04. 1441 Comment
  UC162767  Calystegia occidentalis subsp. occidentalis Joseph P. Tracy 1911-7-6 3342 Humboldt mountain slopes along road between Three Creeks and Mouth Willow Creek; Northern Coast Ranges, btwn Three Creeks and Willow Creek 762 Comment
  RSA178575  Calystegia purpurata Joseph P. Tracy 1950-6-8 18769 Humboldt Near petrolia Hills between Town and Ocean. Comment
  CDA39891  Calystegia silvatica subsp. disjuncta Gordon Leppig 2001-7-8 1577 Humboldt Northern California - North Coast Region; Arcata, at the intersection of 11th and B Streets. 0 Comment
  RSA394825  Calystegia soldanella E. A. Purer 1932-7-27 4140 Humboldt Samoa Comment
  SD42477  Calystegia soldanella Carl B. Wolf 1937-6-18 8902 Humboldt Centerville Beach. 3 Comment
  UCD126164  Calystegia soldanella Roman Gankin 1965-8-6 559 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC18855  Calystegia soldanella P. F. Yull 1966-5-5 144 Humboldt 1 mi. S of Fairhaven Comment
  SEINET3992218  Camassia leichtlinii Unknown 1942-5-16 17331 Humboldt Redway (near Garberville) 152 Comment
  HSC74419  Camassia quamash subsp. linearis Gail Newton 1980-8-10 2041 Humboldt Near Blake Mountain. 1707 Comment
  HSC25217  Camissonia cheiranthifolia Norman Dennis 1965-6-8 104 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  CAS-BOT-BC160243  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Ira L. Wiggins 1930-7-7 4670 Humboldt Near Samoa Comment
  CHSC55903  Camissoniopsis cheiranthifolia subsp. cheiranthifolia L. P. Janeway 1987-7-31 2541 Humboldt Vicinity of Eureka; North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  UCSB15948  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  SEINET10462964  Campanula prenanthoides Newton 1981-8-6 Newton 2408 Humboldt Iaqua Buttes Quad, near Mad River, N slope, sedimentary soil. 1308 Comment
  SEINET10462925  Campanula prenanthoides Lincoln Constance 1934-6-11 Constance 854 Humboldt LOWER LOOK PRAIRIE, AND BULL CR. ROAD TO DYERVILLE Comment
  SEINET10463748  Campanula scouleri Rattan 1883-6-30 RATTAN s.n. Humboldt Between Redwood Creek and Mad River Comment
  HSC6630  Capsella bursa-pastoris J. L. Baker 1965-3-26 17 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  CAS-BOT-BC37419  Cardamine californica LeRoy Ellsworth Detling 1935-4-20 1643 Humboldt Redwood flat, 1 mile north of Dyerville. Comment
  CAS-BOT-BC37425  Cardamine californica Doris K. Kildale 1929-4-27 7444 Humboldt Lord Ellis road near Bald Mountain junction. (road to Willow Creek). Comment
  HSC44272  Cardamine californica Barbara Kelly 1977-4-23 300 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC1536942  Cardamine californica Gordon H. True Jr. 1936-2-26 328 Humboldt e Pepperwood (along Eel River); , e of Pepperwood 91 Comment
  POM311254  Cardamine californica var. integrifolia Keith C. Hughes 1961-2-3 326 Humboldt Richardson Grove State Park; Mt. Range: Coast Ranges; Drainage Area: Pacific Slope. 137 Comment
  RSA0034559  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  RSA176497  Cardamine californica var. integrifolia Doris K. Kildale 1927-1-23 2974 Humboldt Van Duzen River at the Blue Shale. 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
  HSC26791  Cardamine oligosperma Thomas W. Nelson 1971-4-27 426 Humboldt Along Jolly Giant Creek, HSU campus Comment
  HSC6640  Cardamine oligosperma John A. Dubois 1962-5-12 4 Humboldt 20 mi. E of Arcata Comment
  HSC100460  Cardamine paucisecta Carl C. Marshall Mar 1886 154 Humboldt Everywhere. Comment
  CAS-BOT-BC38127  Cardamine pensylvanica Joseph P. Tracy 1937-7-2 15401 Humboldt Trinity Summit. Head of Little Hors-Linto Creek. 1371 Comment
  UCR121762  Cardionema ramosissimum George K. Helmkamp, E. A. Helmkamp 2001-7-8 6997 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC96930  Carex abrupta E. Kimbrough, W. Meier 2007-6-13 10 Humboldt Grouse Mountain, 1 mi. E of NF1 on FS 5N04 1524 Comment
  UC562286  Carex aquatilis var. dives Joseph P. Tracy 1934-7-30 13504 Humboldt along coast in front of South End of Stone Lagoon (Dry Lagoon); Dry Lagoon 6 Comment
  UC50827  Carex arcta J. P. Tracy 1901-6-30 1195 Humboldt immediate vicinity of Eureka 0 Comment
  POM247170  Carex athrostachya Joseph P. Tracy 1934-7-18 13426 Humboldt Grouse Mountain. 1524 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
  RSA244324  Carex barbarae Larry E. DeBuhr 1973-4-23 989 Humboldt Richardson Grove Redwood State Park. Comment
  CAS-BOT-BC34010  Carex brevicaulis Joseph Prince Tracy 1939-5-7 16276 Humboldt Sand Dunes, near Samoa, on Humboldt Bay. 6 Comment
  HSC45435  Carex buxbaumii Thomas W. Nelson, Jane P. Nelson 1978-7-2 4397 Humboldt Along FS 2S08 near Pine Mtn. 1463 Comment
  UC303016  Carex concinnoides Joseph P. Tracy 1926-5-2 7447 Humboldt near Ruby Creek; Northern Coast Ranges, Willow Creek Canyon 609 Comment
  UC1103599  Carex concinnoides Joseph P. Tracy 1927-6-19 8202 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 15 Comment
  HSC95435  Carex cusickii Gordon Leppig 2001-6-16 1569 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  JEPS26003  Carex cusickii Joseph P. Tracy 1938-7-6 16023 Humboldt Big Lagoon 6 Comment
  SEINET7556710 Image available Carex densa Andrew L. Hipp 1999-5-31 458 Humboldt Alder Point, Alder Pt Rd ca 5 mi W of Alder Pt. 503 Comment
  CAS-BOT-BC20077  Carex echinata Joseph Prince Tracy 1932-7-14 10567 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  SEINET7557970 Image available Carex echinata subsp. phyllomanica Juha Pykala, D. H. Norris 1987-6-24 1900 Humboldt Big Lagoon, Big Lagoon fen. Comment
  HSC7163  Carex echinata subsp. phyllomanica Walker 1960-8-16 Humboldt 7 mi., K & K Comment
  SEINET7483969 Image available Carex exsiccata Joseph P. Tracy 1934-1 13502 Humboldt Along coast in front of South End of Stone Lagoon. 3 Comment
  CAS-BOT-BC20014  Carex feta Joseph Prince Tracy 1928-6-17 8451 Humboldt Trinity RIver Valley, at Willow Creek. 152 Comment
  HSC43478  Carex feta Thomas W. Nelson 1976-7-9 2999 Humboldt Along W side of ridge S of E peak of Lassic Mtn., (Signal Peak). 1524 Comment
  UC1152072  Carex feta Joseph P. Tracy 1950-7-6 19010 Humboldt 3 mi s Burr Valley (on the Albee Road); Buck Mountain 1158 Comment
  HSC48040  Carex fracta D. H. Norris 1972-6-26 23033 Humboldt Along Grouse Mtn. Rd., 5 mi. from intersection with Horse Mtn. Rd. Comment
  HSC98938  Carex fracta Cara Witte 2007-6-28 389 Humboldt Friday Ridge Road/ 6N08. 1389 Comment
  SEINET7561246 Image available Carex harfordii Andrew L. Hipp 1999-5-31 456 Humboldt Alder Point, Alder Pt Road ca 3 mi S of Alder Pt. 503 Comment
  JEPS25966  Carex harfordii Joseph P. Tracy 1927-7-17 8279 Humboldt Three Cabins: grassy slopes on lower western foothills of Chaparral Mountain 457 Comment
  HSC103083  Carex hassei Sydney Carothers 2014-6-22 25 Humboldt Six Rivers National Forest, Lassics Botanical Area. Below trail to Mount Lassic. 1707 Comment
  HSC70353  Carex hendersonii M. A. Baker 1980-6-7 1862 Humboldt Near Ammon Creek 732 Comment
  JEPS80026  Carex hendersonii Joseph P. Tracy 1926-6-13 7598 Humboldt Blue Lake Northern Coast Ranges, Blue Lake 152 Comment
  SEINET10650830  Carex hendersonii Victor Duran 1933-5-12 Duran 3412 Humboldt Bull Creek, at S Fork of the Eel River. Redwood forest floor. Comment
  HSC102204  Carex hoodii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1119 Humboldt Patterson Meadows 1555 Comment
  CHSC90279  Carex jonesii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8599 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  UC562263  Carex jonesii Joseph P. Tracy 1935-7-26 14257 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  UC562250  Carex lenticularis var. impressa Joseph P. Tracy 1935-7-23 14148 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC31261  Carex lenticularis var. impressa Joseph Prince Tracy 1935-7-23 14148 Humboldt Trinity Summit, Corral Prairie, in wet meadow. 1584 Comment
  HSC73725  Carex leporinella M. A. Baker 1980-7-22 3072 Humboldt Near Salmon Mtn. 1820 Comment
  UC249762  Carex leptalea Joseph P. Tracy 1924-7-13 6722 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC1152083  Carex luzulina var. luzulina Joseph P. Tracy 1951-6-14 19410 Humboldt Snow Camp Comment
  SEINET7483608 Image available Carex mendocinensis Ray Tallent 1987-1 894 Humboldt Six Rivers National Forest; Roadside S of Horse Mtn 1420 Comment
  CHSC84738  Carex microptera L. P. Janeway 2003-7-26 7920 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5 km northeast of the top of Grouse Mountain. 1554 Comment
  HSC45437  Carex microptera Thomas W. Nelson, Jane P. Nelson 1978-7-2 4401 Humboldt Off FS 2S08 near Pine Mtn., road to Lost Lake 1463 Comment
  CAS-BOT-BC32132  Carex multicaulis Joseph Prince Tracy 1942-6-2 17105 Humboldt Valley of South Yager Creek. 762 Comment
  HSC70323  Carex multicaulis M. A. Baker 1980-6-7 1875 Humboldt Near Ammon Creek 732 Comment
  SEINET7568483 Image available Carex multicostata L. P. Janeway 2003-7-30 7945 Humboldt Grouse Mountain quad. High North Coast Ranges. Edge of seedy area at upper edge of Clear Lake, 2.9 km southeast of Titlow Hill. 1494 Comment
  CAS-BOT-BC119539  Carex nudata W. R. Dudley 1899-6-21 s.n. Humboldt Bluffs below forks of Eel River. Comment
  CAS-BOT-BC119386  Carex obnupta Doris Kildale Gillespie 1931-6-7 10650 Humboldt South Fork Mt. Blake Lookout. 1726 Comment
  HSC86478  Carex obnupta Rudolf W. Becking 1988-4-9 Humboldt South Spit, opposite Fields Landing Comment
  SEINET10711645  Carex obnupta Robert F. Thorne 1965-8-7 Thorne 35199 Humboldt Big Lagoon; elev. c. 5 ft.; at edge of bog at S end of lagoon. Comment
  CAS-BOT-BC119230  Carex pachystachya Joseph Prince Tracy 1927-5-29 8077 Humboldt Big Lagoon 6 Comment
  CAS-BOT-BC119242  Carex pachystachya Joseph Prince Tracy 1939-7-9 16340 Humboldt Snow Camp 1402 Comment
  POM126147  Carex pachystachya Joseph P. Tracy 1923-6-17 6278 Humboldt Big Lagoon 6 Comment
  CAS-BOT-BC119168  Carex pansa Charles Vancouver Piper 1921-5-22 s.n. Humboldt Eureka. Comment
  CAS-BOT-BC119169  Carex pansa Joseph Prince Tracy 1911-6-25 3258 Humboldt Eureka, bayshore. Comment
  JEPS79855  Carex pansa Joseph P. Tracy 1935-7-18 14104 Humboldt next to Table Bluff (around Humboldt Bay); around Humboldt Bay 3 Comment
  HSC75279  Carex rostrata J. O. Sawyer, D. A. Thornburgh 1980-9-9 4076 Humboldt Mill Creek Lake and surrounding meadows Comment
  UC562254  Carex scopulorum var. bracteosa Joseph P. Tracy 1932-7-14 10562 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC118230  Carex scopulorum var. bracteosa Joseph Prince Tracy 1932-7-17 10675 Humboldt Trinity Summit. Wet meadow heading into Devil's Hole. 1828 Comment
  RSA314077  Carex serratodens Thomas W. Nelson, Jane P. Nelson 1978-7-2 4397 Humboldt On wet serpentine along road 2S08 near Pine Mountain. 1463 Comment
  CAS-BOT-BC116678  Carex subfusca Joseph Prince Tracy 1935-7-23 14141 Humboldt Trinity Summit, Corral Prairie, in wet meadow. 1584 Comment
  HSC44059  Carex subfusca Thomas W. Nelson 1976-7-9 3004 Humboldt Along creek S of Mount Lassic (Signal Peak). 1707 Comment
  UC1103085  Carex unilateralis Joseph P. Tracy 1928-6-24 8471 Humboldt valley of South Yager Creek 762 Comment
  CAS-BOT-BC115534  Carex unilateralis Joseph Prince Tracy 1946-5-30 17539 Humboldt Wet gully in grassland near Bridgeville. 457 Comment
  CAS-BOT-BC115537  Carex unilateralis Joseph Prince Tracy 1927-7-17 8276 Humboldt Three Cabins; grassy slopes on lower western foothills of Chaparral Mountain. 457 Comment
  JEPS100923  Carex vesicaria var. major Dean W. Taylor 1991-8-15 12278 Humboldt Snow Camp Lake 1310 Comment
  HSC96465  Carex viridula subsp. viridula Gordon Leppig 1997-8-3 639 Humboldt Big Lagoon County Park, Big Lagoon Bog, N edge 3 Comment
  UC1225792  Carpobrotus chilensis Joseph P. Tracy 1947-9-1 17924 Humboldt Big Lagoon 6 Comment
  JEPS25062  Castilleja affinis subsp. affinis Joseph P. Tracy 1942-7-1 17366 Humboldt opposite Buck Mountain (Dinsmore's, along Van Duzen River); Van Duzen River 762 Comment
  HSC20579  Castilleja affinis subsp. litoralis D. J. Jager 1965-5-12 67 Humboldt 0.5 mi. N of Trinidad on bluff above the ocean 46 Comment
  JEPS3288  Castilleja affinis subsp. litoralis C. R. Bell 1952-5-3 1324 Humboldt 1.8 mi s Trinidad (and 1.8 mi n of Little River, to the w of Highway 101) Comment
  HSC59457  Castilleja ambigua subsp. humboldtiensis M. A. Ericksen 1979-5-18 300 Humboldt Across from Bayside cutoff and Hwy. 101 Jct., Jct. between Arcata and Eureka Comment
  RSA273315  Castilleja ambigua subsp. humboldtiensis J. D. Ackerman 1975-6-10 462 Humboldt 1 mile N of Samoa Bridge turnoff from Samoa Blvd., S of Manila, Humboldt Bay Comment
  RSA33409  Castilleja ambigua subsp. humboldtiensis Doris K. Kildale 1926-6-25 2171 Humboldt Big Lagoon. Comment
  UC146237  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1900-7-4 867 Humboldt Samoa; North Coast Region, Humboldt Bay Region 0 Comment
  HSC55831  Castilleja applegatei G. L. Clifton 1979-7-25 10745 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC101746  Castilleja attenuata J. P. Smith, J. O. Sawyer 2010-5-2 12810 Humboldt Along Hwy. 96, N of Orleans 140 Comment
  SEINET13737390  Castilleja attenuata J. P. Tracy 1911-5-30 3198 Humboldt Eureka. Comment
  HSC46970  Castilleja exserta subsp. latifolia J. P. Smith, Thomas W. Nelson 1977-6-30 9210 Humboldt Samoa Peninsula just E of the drag strip. Comment
  HSC49514  Castilleja exserta subsp. latifolia R. York 1979-5-18 292 Humboldt Stabilized dunes opposite the Louisiana Pacific mill in Samoa Comment
  UCD122467  Castilleja exserta subsp. latifolia Linda M. Barker 1976-6-1 1545 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  JEPS10344  Castilleja exserta subsp. latifolia Joseph P. Tracy 1938-7-12 16058 Humboldt Table Bluff, w of lighthouse Table Bluff 6 Comment
  JEPS76825  Castilleja exserta subsp. latifolia L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-5-27 4805 Humboldt beach at Manila Manila; Samoa Peninsula, beach at Manila Comment
  HSC92193  Castilleja mendocinensis E. Mackey 1986-7-6 Humboldt Patrick's Point State Park, on trail to Wedding Rock. Comment
  CAS-BOT-BC244878  Castilleja miniata Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  UC1222459  Castilleja rubicundula subsp. lithospermoides H. E. Parks and Joseph P. Tracy 1930-5-25 8723 Humboldt near Bridgeville 182 Comment
  UC1502102  Ceanothus R. Sutherland 1975-7-4 3 .4.7 75 Humboldt se corner of S 11 Pt. Delgada Quad. 548 Comment
  CAS-BOT-BC49318  Ceanothus cuneatus Doris K. Kildale 1927-7-22 3833 Humboldt Lasseck's Peaks 1661 Comment
  UC668166  Ceanothus foliosus Joseph P. Tracy 1937-5-30 15314 Humboldt 3 mi s Bridgeville (by roadside.) 457 Comment
  UC728641  Ceanothus foliosus Milo S. Baker 1931-5-17 5192 Humboldt e Occidental (27.5 mi south of Garberville on hwy.) Comment
  HSC37602  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-13 10 .13575 Humboldt Brushy flat 509 Comment
  POM118617  Ceanothus incanus Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville. Comment
  CAS-BOT-BC63678  Ceanothus integerrimus L. B. Kildale 1928-6-24 5279 Humboldt Entrance to Hoopa Mt. Comment
  UC1198004  Ceanothus integerrimus Joseph P. Tracy 1921-6-19 5839 Humboldt ridge to n Willow Creek (between Willow Creek and campbell Creek, near Langdon's Gopher Camp.); Brannon Mountain, Northern Coast Ranges 762 Comment
  CAS-BOT-BC51216  Ceanothus parryi Mrs. H. C. Cantelow 1935-5-30 829 Humboldt N. of Garberville Comment
  HSC36681  Ceanothus parryi R. Sutherland 1975-4-22 8 .22475 Humboldt E of China Creek at county rd. 207 Comment
  HSC43184  Ceanothus parryi R. Sutherland 1975-4-22 6 .22475 Humboldt Near China Creek at county rd. 207 Comment
  CAS-BOT-BC52989  Ceanothus thyrsiflorus A. A. Heller 1923-7-9 13782 Humboldt On grassy slopes along the grade south of Eureka Comment
  HSC37609  Ceanothus thyrsiflorus R. Sutherland 1975-5-8 11 .8575 Humboldt Along county rd. near Mattole River, 6 mi W of Honeydew Comment
  JEPS42139  Ceanothus thyrsiflorus W. L. Jepson 1902-6-24 1928 Humboldt near Angel's Ranch (between Korbel and Acorn) 274 Comment
  RSA31956  Ceanothus thyrsiflorus A. A. Heller 1937-6-11 15916 Humboldt Sandy bluff above Patric Point State Park near Big Lagoon Comment
  UCD112727  Ceanothus thyrsiflorus K. Twitchell 1996-5-11 25 Humboldt Crannell, along old Highway 101 at Moonstone beach access. 36 Comment
  CAS-BOT-BC52861  Ceanothus velutinus Doris K. Kildale 1926-4-25 1812 Humboldt Hoopa Mountain 304 Comment
  SEINET201062  Ceanothus velutinus J. P. Tracy 1935-5-12 13798 Humboldt Trinity River Valley at Willow Creek 152 Comment
  CDA36344  Centaurea jacea Domenic Bongio 2011-11-15 PDR# 1414345 Humboldt Trinidad; Hwy 101 at mile-maker 104.05 near Patrick s Point Dr. 0 Comment
  UC166067  Centaurea melitensis Joseph P. Tracy 1911-7-4 3297 Humboldt along creek, near its mouth Willow Creek (tributary of Trinity River); North Coast Ranges, Trinity River, Willow Creek 182 Comment
  SDSU7104  Centaurium tenuiflorum D. F. Howe 1963-7-8 3622 Humboldt 8.2 miles west of Bridgeville on Cal 36, Van Duzen River. 91 Comment
  HSC53808  Cephalanthera austiniae Griswold, Butler 1979-7-10 6239 Humboldt Near Board Camp Mountain, close to the town of Willow Creek 1494 Comment
  HSC74319  Cephalanthera austiniae Gail Newton 1980-7-20 1600 Humboldt Near Bell Swamps 1463 Comment
  UC1196470  Cephalanthera austiniae Joseph P. Tracy 1932-7-20 10734 Humboldt Trinity Summit near Corral Prairie; Trinity Summit 1584 Comment
  UC8237  Cerastium arvense J. Burtt Davy 1899-6-10 5394 Humboldt Hubbard's Station North Coast Ranges, Hubbard's Station Comment
  HSC79360  Cerastium arvense Kenneth Clark 1980-4-18 599 Humboldt Above Dead Man's gulch 175 Comment
  UC8232  Cerastium arvense H. N. Bolander 1867-1 6520 Humboldt E. Fork Eel R. Comment
  UCD98057  Cerastium glomeratum H. E. Parks; S. T. Parks 1944-4-1 24279 Humboldt Spruce Cove, Trinidad. 60 Comment
  SFV18532  Cerastium glomeratum H. Barnes 2002-5-4 39 Humboldt McKinleyville. Hiller Park. Hammond Trail, 0.2 km north from parking lot. 25 Comment
  SBBG60189  Chamerion angustifolium R. Hartwell 1938-8-7 Humboldt near Eureka Comment
  HSC55266  Chamerion angustifolium subsp. circumvagum Overton, Butler 1979-8-2 12631 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC59666  Chamerion angustifolium subsp. circumvagum George Kirn 1977-9-4 Humboldt 3 mi. E of Eureka on Myrtle Ave. 11 Comment
  HSC76323  Cheilanthes gracillima Denis Kearns 1981-7-21 304 Humboldt Near Whiteys Peak 1585 Comment
  UC503076  Cheilanthes gracillima Joseph P. Tracy 1927-6-12 8166 Humboldt Horse Mt; Northern Coast Ranges 1066 Comment
  HSC100932  Cheilanthes gracillima Miss Handy Jun 1886 337 Humboldt Rocks near Maple Cr. Comment
  UC55946  Chenopodium botrys J. P. Tracy 1902-8-10 1767 Humboldt Eel River Railroad Station Immediate vicinity of Eureka 0 Comment
  UCD98277  Chenopodium macrospermum Malcolm A. Nobs; S. Galen Smith 1949-8-11 1340 Humboldt eastern shore of Stone Lagoon. Comment
  HSC40249  Chenopodium polyspermum Linda M. Barker 1976-8-24 1680 Humboldt 3 mi. W of Arcata Comment
  BLMAR166  Chimaphila menziesii Donald Hazlett 1994-6-7 166 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC451387  Chimaphila menziesii T. Worley; M. Mill; F. Rosenthal 1985-5-10 56 Humboldt Horse Mountain Rd., approx. 8 miles S of Hwy. 299 1143 Comment
  CAS-BOT-BC451496  Chimaphila umbellata Henry M. Pollard 1986-8-28 s.n. Humboldt Near summit, Orleans Mt. 1828 Comment
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Feb 21 2020
  UC1225900  Chimaphila umbellata Joseph P. Tracy 1947-7-9 17856 Humboldt Horse Mt. 1432 Comment
  UC176054  Chimaphila umbellata Joseph P. Tracy 1913-7-20 4368 Humboldt near Three Creeks on Willow Creek Rd.; N. Coast Ranges 1066 Comment
  CAS-BOT-BC30123  Chrysolepis chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt Northern Coast Ranges. French Camp Ridge. 1066 Comment
  RSA1834  Chrysolepis chrysophylla Carl B. Wolf 1930-10-30 1786 Humboldt Old coast road at Thorn. 305 Comment
  RSA20963  Chrysolepis chrysophylla Carl B. Wolf 1937-9-13 9338 Humboldt North Coast Range, summit of Grouse Mt. 1645 Comment
  CAS-BOT-BC36360  Chrysolepis sempervirens Joseph P. Tracy 1937-7-29 15583 Humboldt South Fork Mountain; barren rocky places along summit near Blake Lookout 1706 Comment
  RSA170226  Chrysosplenium glechomifolium Joseph P. Tracy 1918-4-28 4888 Humboldt At Eureka 0 Comment
  UC1141460  Chrysosplenium glechomifolium Harold E. Parks Feb 1939 5267 Humboldt 2 mi n Trinidad (along McNeil's Creek); McNeil's Creek Comment
  HSC95389  Cicuta douglasii Andrea Pickart 2002-7-19 187 Humboldt Arcata Marsh in Log Pond 10 Comment
  UC154254  Cicuta douglasii Joseph P. Tracy 1907-7-20 2597 Humboldt Region about Humboldt Bay, Northern Coast Region Humboldt Bay; Northern Coast Region, Humboldt Bay 0 Comment
  HSC24389  Circaea alpina subsp. pacifica J. O. Sawyer 1970-6-24 2254 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC56318  Circaea alpina subsp. pacifica Overton, Butler 1979-8-2 12657 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC58212  Circaea alpina subsp. pacifica Walter Overton 1979-8-1 12340 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC162349  Circaea alpina subsp. pacifica Joseph P. Tracy 1911-7-5 3311 Humboldt near its mouth Willow Creek; Northern Coast Ranges, Willow Creek (tributary of Trinity R. 304 Comment
  HSC100575  Circaea pacifica Carl C. Marshall Jul 1886 348 Humboldt Xavier's Place, Bald Hills. Comment
  CAS-BOT-BC284403  Cirsium arvense Alice Eastwood 1921-7-21 10659 Humboldt Carlotta Comment
  NY370205  Cirsium arvense L. Abrams 1916-7-11 6034 Humboldt Mouth of Grizzly Creek on Van Duzon River Comment
  CDA1114  Cirsium brevistylum T. R. Haig, T. C. Fuller 1959-6-12 2792 Humboldt 8 mi. N/ Trinidad. 0 Comment
  CAS-BOT-BC285529  Cirsium occidentale var. candidissimum L. B. Kildale 1930-7-7 10261 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  CAS-BOT-BC285531  Cirsium occidentale var. candidissimum Doris K. Kildale 1928-6-24 5275 Humboldt Horse Mountain 914 Comment
  CHSC36389  Cirsium occidentale var. candidissimum Donald M. Burke 1981-8-1 67 Humboldt Along Friday Ridge Rd. 560 Comment
  CAS-BOT-BC285528  Cirsium occidentale var. candidissimum John Thomas Howell 1937-7-31 13713 Humboldt Trinity River Canyon 2 miles west of Trinity Co. line Comment
  OBI81553  Cirsium occidentale var. candidissimum Jill M. Bushakra, John Bushakra 2000-6-16 42 Humboldt Across Hwy 101/Hwy 271 from the Elfin Glen Gift Shop, north of the Standish-Hickey Prk. Opening in coniferous forest. 213 Comment
  CAS-BOT-BC286388  Cirsium occidentale var. venustum Doris K. Kildale 1926-5-16 1838 Humboldt Horse Mountain 1066 Comment
  UC1223062  Cirsium remotifolium Joseph P. Tracy 1941-8-12 16976 Humboldt 2 mi s of town of Field's Landing 6 Comment
  UC1222854  Clarkia amoena Joseph P. Tracy 1951-6-30 19601 Humboldt Trinity Highway, at Berry's North Coast Ranges, Redwood Creek 274 Comment
  CAS-BOT-BC160945  Clarkia amoena subsp. amoena Peter H. Raven; R. Snow 1958-7-21 13656 Humboldt 7.2 miles north-west of Capetown on road to Ferndale Comment
  JEPS43650  Clarkia amoena subsp. huntiana W. L. Jepson 1902-7-1 1970 Humboldt near Berry's Ranch; Redwood Creek Comment
  UC1072042  Clarkia amoena subsp. huntiana H. and M. Lewis 1947-6-12 424 Humboldt 4.8 mi n Ohman Creek Bridge (4-07) (U. S. Highway 101) Comment
  HSC16279  Clarkia concinna subsp. concinna B. D. Rogers, William J. Ferlatte 1966-6-15 2105 Humboldt Larabee Valley 762 Comment
  HSC22848  Clarkia concinna subsp. concinna D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5055 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  UC162342  Clarkia davyi Joseph P. Tracy 1911-6-25 3256 Humboldt bluffs back of Bucksport (region about Humboldt Bay); Northern Coast Region 0 Comment
  LA206342  Clarkia gracilis H. Lewis; M. Lewis 1947-6-13 423 Humboldt Highway 36 at S Fork of Van Duzen River (Bridge 4-119) Comment
  UC902179  Clarkia gracilis subsp. sonomensis Joseph P. Tracy 1944-7-3 17484 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC38312  Clarkia purpurea Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  CAS-BOT-BC172506  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1928-6-24 7075 Humboldt Redwood Creek at Berry's 289 Comment
  HSC16258  Clarkia purpurea subsp. quadrivulnera B. D. Rogers, William J. Ferlatte 1966-6-15 2096 Humboldt E of Bridgeville on Hwy. 36 671 Comment
  UC1196976  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1936-6-9 14898 Humboldt 4 mi nw Petrolia (Domingo Hill) 213 Comment
  UC1196978  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1937-7-5 15372 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC902172  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1947-6-28 17723 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  UCSB23037  Clarkia purpurea subsp. quadrivulnera Tracy, Joseph 1936-6-10 Humboldt south fork of Trinity river; mountain slopes west of its mouth 457 Comment
  CAS-BOT-BC164723  Clarkia rhomboidea Harley P. Chandler 1901-6-1 1339 Humboldt Hupa Indian Reservation 152 Comment
  SEINET10492532  Clarkia rhomboidea Lincoln Constance 1934-6-15 Constance 880 Humboldt Summit of Grasshopper Peak, South Fork EeL River, Bull Creek Region. 3200 feet. 975 Comment
  CAS-BOT-BC439096  Claytonia cordifolia Harold E. Parks; Joseph P. Tracy 1949-6-25 11680 Humboldt Trinity Summit: at Box Camp 1463 Comment
  HSC24076  Claytonia lanceolata J. O. Sawyer 1971-6-15 2385 Humboldt S of Trinity Summit Station 1829 Comment
  CAS-BOT-BC440094  Claytonia perfoliata subsp. perfoliata Doris Kildale 1931-5-10 10547 Humboldt Snow Camp Comment
  HSC95726  Claytonia perfoliata subsp. perfoliata Steven Lee 2004-3-17 2 Humboldt S Fork Rd. from Hwy. 299 to Co. Rd. 341, along river access trail at end of road Comment
  HSC32310  Claytonia rubra subsp. rubra D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5662 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC71810  Claytonia saxosa Thomas W. Nelson, Jane P. Nelson 1980-6-27 5952 Humboldt Six Rivers National Forest, saddle between two peaks E of Mt. Lassic 1768 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
  CAS-BOT-BC443895  Claytonia sibirica Harley P. Chandler 1901-5-1 1264 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  HSC76598  Claytonia sibirica Teresa Prendusi 1981-7-24 474 Humboldt Near Whiteys Peak 1585 Comment
  SEINET190447  Claytonia sibirica J. P. Tracy 1932-7-14 10536 Humboldt Trinity Summit Corral Prairie 1585 Comment
  UC162972  Claytonia sibirica Joseph P. Tracy 1908-6 2860 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  POM109524  Clintonia andrewsiana Marcus E. Jones 1924-4-28 s.n. Humboldt Scotia. Comment
  CAS-BOT-BC499337  Clintonia andrewsiana Mrytle Paulson 1918-4-28 s. n. Humboldt Eureka Comment
  HSC100555  Clintonia uniflora Carl C. Marshall Jun 1886 316 Humboldt Trail E of Hoopa. Comment
  UC146212  Clintonia uniflora Joseph P. Tracy 1908-6-27 2733 Humboldt at foot of Buck Mountain, along the Van Duzen River Van Duzen River; Northern Coast Ranges, Buck Mountain, Van Duzen River 304 Comment
  HSC20587  Collinsia grandiflora Elrid H. Spinas 1948-6-16 53 Humboldt Horse Mtn. Comment
  UC41805  Collinsia grandiflora Harley P. Chandler May 1901 1251 Humboldt Redwood Belt; North Coast Ranges 457 Comment
  RSA60814  Collinsia linearis Frank W. Gould 1939-5-30 831 Humboldt Southwestern side of Horse Mountain. 762 Comment
  UC582455  Collinsia linearis Joseph P. Tracy 1936-6-10 14931 Humboldt South Fork of Trinity River, slopes w of its mouth South Fork of Trinity River 457 Comment
  UC1115823  Collinsia parviflora Joseph P. Tracy 1939-7-9 16332 Humboldt Snow Camp 1402 Comment
  UC582457  Collinsia rattanii Joseph P. Tracy 1925-5-20 7032 1/2 Humboldt Northern Coast Ranges, Laribee Valley Laribee Valley; Northern Coast Ranges, Laribee Valley 701 Comment
  UC176050  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1913-5-4 4053 Humboldt Kneeland Prairie; North Coast Ranges; Kneeland Prairie 762 Comment
  RSA411155  Collomia grandiflora Anstruther Davidson 1918-07 3352 Humboldt Eel River. Comment
  HSC45828  Collomia heterophylla J. P. Smith, J. O. Sawyer 1973-5-12 6672 Humboldt 2 mi. from Redwood Creek on Hoopa Rd. Comment
  UC133645  Collomia heterophylla Joseph P. Tracy 1909-7-31 3046 Humboldt on gravelly hillside Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC133660  Collomia tracyi Joseph P. Tracy 1908-6 2837 Humboldt nw talus slope Northern Coast Ranges, Buck Mountain 914 Comment
  UC978531  Collomia tracyi Joseph P. Tracy Jul 16 1930-Jul 19 1930 9046 Humboldt open glades along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  CAS-BOT-BC180241  Comandra umbellata subsp. californica Doris K. Kildale 1926-5-2 1867 Humboldt Willow Brook, rocky terrace on Trinity River 152 Comment
  HSC36297  Comarum palustre Dana A. Page 1973-11-24 Humboldt Crannell Rd. 0.5 mi. E of Hwy. 101, McKinleyville Comment
  HSC36436  Conium maculatum John Rehlingl 1974-6-27 Humboldt Along Alliance Rd. Comment
  HSC67014  Conyza canadensis J. P. Smith 1971-10-9 4988 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC12546  Conyza canadensis C. Kline 1970-11-15 65 Humboldt Bayside Rd., .5 mi. N of Bayside Comment
  CAS-BOT-BC133714  Corallorhiza Doris Kildale 1931-5-10 10689 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  HSC39077  Corallorhiza maculata J. D. Ackerman 1976-7-3 765 Humboldt 1 mi. E of Blue Lake along old state Hwy. 299. Simpson Demonstration Forest, near hwy. Comment
  UC1196450  Corallorhiza maculata Joseph P. Tracy 1930-7-18 9063 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC54866  Corallorhiza mertensiana G. L. Clifton, Griswold 1979-7-25 10776 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC176372  Corallorhiza striata Joseph P. Tracy 1913-6-14 4131 Humboldt Buck Mountain Northern Coast Ranges (nw slope, lower foothills) 762 Comment
  SEINET200684 Image available Corallorhiza striata var. striata Joseph P. Tracy 1913-6-14 4131 Humboldt Lower foothills of Buck Mountain, on its northwest slope 762 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
  JEPS93181  Cordylanthus maritimus subsp. palustris Margriet Wetherwax and Kevin Downing 1993-8-9 2462 Humboldt N of Eureka, along N side of Eureka Slough; Jacobs St. turn-off of 101N just beyond bridge over slough; between two Peterbilt warehouses; population extends sporadically to Johns Used and Crashed Cars 5 Comment
  HSC76251  Cordylanthus tenuis subsp. viscidus Denis Kearns 1981-7-6 64 Humboldt Near Mosquito Lake 1256 Comment
  CAS-BOT-BC101139  Corethrogyne filaginifolia J. Burtt Davy 1899-6-30 6185 Humboldt near Ferndale, n. Coast Ranges Comment
  CAS-BOT-BC101146  Corethrogyne filaginifolia Marcus E. Jones 1931-8-2 29133 Humboldt McKinleyville Comment
  HSC75232  Corethrogyne filaginifolia D. M. Gordon 1982-9-20 Humboldt End of country road (Lanphere Rd.)on Hunt property. Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  JEPS15870  Corethrogyne filaginifolia Joseph P. Tracy 1938-7-15 16059 Humboldt sandy fields at Bucksport (at Eureka); Eureka Comment
  UC1223038  Corethrogyne filaginifolia Joseph P. Tracy 1948-8-22 18106 A Humboldt 5 mi e of town old Strong's District School House; Carlotta 60 Comment
  SD38604  Corethrogyne filaginifolia var. filaginifolia Edith A. Purer 1932-7-30 4675 Humboldt Sand dunes south of Oric. Comment
  HSC59488  Cornus nuttallii M. A. Ericksen 1979-4-28 237 Humboldt Across from Bigfoot statue on left side of Hwy. 299, into Willow Creek from the west. Comment
  SEINET12137714  Cornus nuttallii F. H. Utech 1988-1 88 -278 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, bluff above Van Duzen River 800 Comment
  HSC102041  Cornus sericea M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 944 Humboldt Rustic Camp, northwest of Patterson Meadows Comment
  HSC6422  Cornus sessilis J. P. Tracy 1941-3-26 16846 Humboldt Four-Mile Creek near mouth of S Fork Trinity River. 610 Comment
  UC1167522  Cornus sessilis J. A. Delapp 1959-9-2 51 Humboldt 6 3/4 mi. n.-n.e. Schoolhouse Peak (near Big Prairie, V-Plot #81, <3N-95>); Quad. 11C-1 685 Comment
  UC502984  Cornus sessilis Joseph P. Tracy 1927-3-27 7857 Humboldt near S. Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  UC1225940  Corylus californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, N slope; along Hookton road 9 Comment
  CAS-BOT-BC180301  Corylus cornuta subsp. californica Joseph P. Tracy 1931-8-16 9611 Humboldt near Briceland 152 Comment
  HSC41319  Corylus cornuta subsp. californica Brad Klipfel 1974-9-2 528 Humboldt Horse Mtn. Comment
  HSC70453  Corylus cornuta subsp. californica Gail Newton 1980-7-20 1642 Humboldt Near Bell Swamps 1426 Comment
  HSC95923  Corylus cornuta subsp. californica Will Ferrand 2001-6-17 14 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  CAS-BOT-BC143487  Cotoneaster franchetii Peter F. Zika 2007-7-20 23323 Humboldt Lynda Lane near high school, S end of Big Lagoon, (NCo, North Coast) 20 Comment
  HSC5429  Cotula coronopifolia Rollin Sparrowe 1962-4-28 4 Humboldt In sloughs N and S of road Comment
  JEPS89545  Crepis capillaris Dean W. Taylor 1991-9-15 12288 Humboldt along Hwy. 101 near mouth of Tom Creek (Big Lagoon); N. Coast Ranges, Big Lagoon 3 Comment
  UCR122363  Crepis capillaris George K. Helmkamp, E. A. Helmkamp 2001-7-8 6992 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
  SDSU3878  Crepis capillaris D. F. Howe 1961-7-31 3098 Humboldt 37.7 miles south of Eureka on #101. Comment
  UCSB30599  Crepis capillaris Edwards, David 1974-7-13 Humboldt SW. of intersection of Fickle Hill Rd. and Hill St., ca. 1/3 mi. E. of U.S. 101, Arcata 36 Comment
  UC1225821  Crepis setosa Joseph P. Tracy 1947-7-13 17769 Humboldt Hors-Linto Creek; near mouth 152 Comment
  SEINET10529035  Crocosmia aurea Charlene A. Bennett 1976-8-6 Bennett 477 Humboldt Collected by hwy. 101, N side of orick. Rocky area, densely forested by river 30 Comment
  UC32552  Cryptantha flaccida Hy-Am Pum Jul 1888 Humboldt Comment
  UC525602  Cryptantha milobakeri Joseph P. Tracy 1927-5-15 8050 Humboldt w of Hoopa Valley; North Coast Ranges, Supply Creek 304 Comment
  HSC58237  Cryptantha torreyana Walter Overton 1979-8-1 12396 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC73718  Cryptantha torreyana M. A. Baker 1980-7-15 2976 Humboldt Near Whiting Ridge. 1341 Comment
  UC1239649  Cryptantha torreyana Harold E. Parks and Joseph P. Tracy 1934-6-27 11058 Humboldt Grouse Mt. 1432 Comment
  UC1239651  Cryptantha torreyana Joseph P. Tracy 1926-7-5 7732 Humboldt Valley of South Yager Creek 762 Comment
  UC562673  Cuscuta californica Joseph P. Tracy 1932-7-13 10496 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC104294  Cuscuta occidentalis Samantha E. Andres 2016-5-30 15 Humboldt Dry Lagoon Coastal Trail 5 Comment
  HSC89900  Cuscuta pacifica var. pacifica Leonel Arguello 1989-9-9 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  HSC59455  Cuscuta pacifica var. pacifica M. A. Ericksen 1979-5-18 302 Humboldt At edge of Humboldt Bay mud flats, 75 yards N of Arcata Redwood Company main gate, Hwy. 101 between Arcata and Eureka Comment
  POM318827  Cuscuta salina Patricia Wilder 1968-8-21 4416 a Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  CHSC31295  Cuscuta salina var. major Mark Stopher 1980-7-11 117 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  UC562478  Cuscuta subinclusa Joseph P. Tracy 1931-6-20 9586 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  HSC65846  Cycladenia humilis Gail Newton 1980-7-22 1655 Humboldt Near Devils Backbone 1554 Comment
  HSC66829  Cycladenia humilis M. A. Baker 1980-7-24 3197 Humboldt Near Orleans Mtn. 1625 Comment
  UCD60133  Cynosurus cristatus R. Tofsrud 1949-7-1 s. n. Humboldt South edge of Scotia. Comment
  BLMAR33  Cynosurus echinatus Brad Barr June, 1982 33 Humboldt King range, Lake ridge south facing slope Comment
  HSC37257  Cynosurus echinatus Lon Hall 1975-6-19 389 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC79447  Cynosurus echinatus Kenneth Clark 1980-4-18 579 Humboldt Access trail to Dead Man's Gulch, Shelter Cove. 122 Comment
  UC1103242  Cynosurus echinatus Joseph P. Tracy 1942-6-15 17141 Humboldt along South Fork of Eel River Miranda; along South Fork of Eel River 121 Comment
  SEINET11676331  Cynosurus echinatus L. K. Henry 1971-1 s.n. Humboldt along Rt. 36, 2 mi E of Dinsmore in Six Rivers National Forest 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
  UC668033  Cyperus eragrostis Joseph P. Tracy 1937-8-3 15612 Humboldt along Mad R. near Blue Lake; Mad R. 15 Comment
  CAS-BOT-BC114624  Cyperus eragrostis Joseph Prince Tracy 1935-7-17 14099 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  RSA275286  Cyperus eragrostis J. P. Smith, Advanced Plant Taxonomy Plant 1971-10-9 4990 Humboldt Mad River above the Fish Hatchery. Comment
  UC1103632  Cyperus eragrostis Joseph P. Tracy 1934-7-14 13399 Humboldt along Mad R. near Blue Lake; Mad R. 15 Comment
  HSC14680  Cytisus multiflorus R. A. Magie 1964-5-3 56 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  SEINET8477238  Cytisus scoparius D. Taylor 2011-5-4 21114 Humboldt Alderpoint Road in the vicinity of snowline fox farm (Larabee Valley 7 1/2 USGA quadrangle placename), vicinity of the road crossing of Knack Creek 341 Comment
  CAS-BOT-BC198198  Cytisus striatus Catherine Best 1990-6-26 1367 Humboldt At the edge of Stagecoach Road off Hwy. 101. Comment
  RSA728077  Dactylis glomerata Gary D. Wallace 1979-6-24 1859 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek; near Honker Timber scale (?), near lookout. 1216 Comment
  CAS-BOT-BC189738  Danthonia californica David D. Keck 1944-7-11 5493 Humboldt 3 miles northeast of Capetown. 152 Comment
  CAS-BOT-BC189746  Danthonia californica Doris K. Kildale 1928-7-1 5308 Humboldt French Camp - Bald Hills - Orick Martins Ferry road. Comment
  HSC72622  Danthonia californica J. P. Smith 1977-7-3 9231 Humboldt On Forest Service Road 13N01 to Fish Lake, 3.5 mi. from its junction with Highway 36 488 Comment
  UC1152021  Danthonia californica Joseph P. Tracy 1951-6-26 19571 a Humboldt Snow Camp and Twin Lakes vicinity Comment
  UC187246  Danthonia californica var. americana Joseph P. Tracy 1906-6-24 2510 Humboldt Humboldt Hill Northern Coast Region, region about Humboldt Bay (s slope) 0 Comment
  UCD60503  Danthonia californica var. americana R. Tofsrud 1947-6-27 s.n. Humboldt About halfway between Yager and Kneeland on county road. Comment
  UCD60514  Danthonia californica var. americana R. Tofsrud 1947-6-27 s.n. Humboldt About halfway between Yager and Kneeland on county road. Comment
  UC552754  Danthonia intermedia Joseph P. Tracy 1934-7-18 13421 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC420364  Darmera peltata Doris K. Kildale 1926-5-2 1900 Humboldt Willow Creek Flat Comment
  HSC20251  Darmera peltata C. F. Hudson 1964-5-7 6436 Humboldt 2 mi. up river from the mouth of Mad River, S bank 1 Comment
  UC204116  Darmera peltata Joseph P. Tracy 1918-5-27 4934 Humboldt foot of Grouse Mt. (Redwood Creek); Northern Coast Ranges 457 Comment
  JEPS12210  Datura stramonium W. L. Jepson 1932-7-29 16436 Humboldt Dyerville 88 Comment
  SEINET3823243 Image available Daucus pusillus J. P. Tracy 1909-7-18 3021 Humboldt Sand Hills of Ocean Beach at Samoa, opp. Eureka Comment
  UC1197353  Daucus pusillus Harley P. Chandler May, 1901 1154 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  JEPS15999  Daucus pusillus W. L. Jepson 1902-6 1963 Humboldt Redwood Creek, Hupa Rd. Comment
  HSC24780  Delairea odorata Barbara Kelly 1971-11-15 230 Humboldt North Bank Rd. next to Hwy. 101, McKinleyville Comment
  BLMAR630  Delphinium decorum Jennifer Wheeler 2011-6-15 630 Humboldt Lacks Creek, Pine Ridge Road Comment
  HSC102079  Delphinium decorum subsp. tracyi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 981 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CAS-BOT-BC10317  Delphinium hesperium Doris K. Kildale 1926-5-31 2079 Humboldt Cold Brook Camp between Kilipeville & lower Lake Comment
  CAS-BOT-BC9951  Delphinium nudicaule Doris K. Kildale 1927-3-20 2928 Humboldt Philipsville, south fork of Eel River Comment
  HSC27071  Delphinium nudicaule Clifton Raymond Chesbrough 1971-4-11 8 Humboldt 1.0 mi. E of Salyer on Hwy. 299, along Trinity River Comment
  JEPS2559 Image available Dentaria californica Joseph P. Tracy 1921-3-20 5426 Humboldt 12 mi e Hydesville (Van Duzen River at Blue Slide); Northern Coast Ranges, Van Duzen River; Van Duzen River at Blue Slide, E of Hydesville, Humboldt Co. 91 Comment
  SEINET10515720  Deschampsia cespitosa Mark Stopher 1980-6-4 Stopher 95 Humboldt Very common along Elk River near Hwy 101 bridge. T4N R1W sw 1/4 sec 4, Eureka quadrangle. Elevation 1 mi. 1 Comment
  CAS-BOT-BC194295  Deschampsia cespitosa subsp. cespitosa Joseph P. Tracy 1904-7-31 2129 Humboldt Eureka 60 Comment
  BLMAR534  Deschampsia danthonioides Jennifer Wheeler 2009-6-23 534 Humboldt King range, On King Peak road Comment
  UC187271  Deschampsia danthonioides J. P. Tracy 1903-5-24 1911 Humboldt Alder Point on Eel. R. Alder Point; Eel. R., Alder Point 152 Comment
  UC552716  Deschampsia danthonioides Joseph P. Tracy 1935-6-23 13969 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC201771  Deschampsia elongata H. N. Bolander 1862-1-1 s.n. Humboldt Unspecified Comment
  HSC103072  Deschampsia elongata Sydney Carothers 2014-6-12 13 Humboldt Six Rivers National Forest, Lassics Botanical Area, Red Lassic. Near upper pond and rustic camp site. 1706 Comment
  HSC72638  Deschampsia elongata J. P. Smith 1977-7-3 9245 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  HSC98873  Dianthus armeria Cara Witte 2007-8-1 618 Humboldt Friday Ridge Road (Forest Service Road 6N08). Approximately 1.25 miles northeast of intersection with Friday Camp. 1222 Comment
  HSC8354  Dicentra formosa D. E. Anderson 1962-3-24 1948 Humboldt Along Turner Rd. Comment
  HSC95828  Dicentra formosa Steven Lee 2004-3-30 7 Humboldt Arcata Community Forest, 100 ft. E of junction of Granite Ave. and Jolly Giant Creek Rd. 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-BC209196  Dichanthelium acuminatum subsp. acuminatum Joseph P. Tracy 1900-8-26 925 Humboldt Eureka 60 Comment
  SEINET7293093 Image available Dichanthelium acuminatum subsp. fasciculatum Joseph P. Tracy 1938-1 16172 Humboldt Bald Mountain; at 'Lake Prairie Comment
  RSA92453  Dichanthelium acuminatum var. fasciculatum F. W. Peirson 1923-7-9 3650 Humboldt along Eel River, Humboldt State Park Comment
  SEINET200953 Image available Dichanthelium oligosanthes subsp. scribnerianum Joseph P. Tracy 1931-5-17 9428 Humboldt Rocky places along river. Trinity River Valley at Willow Creek Comment
  UC146201  Dichelostemma capitatum Joseph P. Tracy 1908-6 2773 Humboldt opposite Buck Mountain; Northen Coast Ranges, Valley of Van Duzen River 304 Comment
  HSC97467  Dichelostemma capitatum subsp. pauciflorum Cara Witte 2007-5-29 126 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  UC666883  Dichelostemma congestum Joseph P. Tracy 1927-5-8 7965 Humboldt Phillipsville South Fork of Eel River 121 Comment
  HSC44758  Dichelostemma congestum Maralyn O'Meara 1972-6-8 81 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  HSC24401  Dichelostemma ida-maia J. O. Sawyer 1970-6-24 2216 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC48151  Dichelostemma ida-maia Brad Klipfel 1975-6-17 665 Humboldt Along Titlow Hill Rd. Comment
  RSA120194  Dichelostemma ida-maia S. S. Tillett 1956-7-6 622 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  HSC44728  Dichelostemma ida-maia Maralyn O'Meara 1972-6-8 79 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  UC175926  Dichelostemma ida-maia Joseph P. Tracy 1913-6-20 4227 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  UC1198161  Dichelostemma multiflorum Joseph P. Tracy 1911-7-6 3346 Humboldt along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  SEINET3885674  Dichelostemma pulchellum James P. Smith 1973-5-5 6485 Humboldt Roadside and streamside along Cook and Green Pass.; 0 Comment
  CHSC1743  Digitalis purpurea M. Anthony 1960-5-14 Humboldt N. of Arcata, Highway 101. Comment
  POM273546  Digitalis purpurea Lyman D. Benson 1928-7-10 523 Humboldt Weott Ranger Station. Seaward N Coast mtn range, S. Fork Eel River drainage. 61 Comment
  CAS-BOT-BC153238  Diplacus kelloggii Doris K. Kildale 1926-4-10 1786 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC153239  Diplacus kelloggii Doris K. Kildale 1927-5-20 3228 Humboldt Bug Creek 792 Comment
  HSC62879  Dipsacus fullonum J. M. DiTomaso 1979-5-20 1042 Humboldt Arcata, Hwy. 101 at Guintoli Rd. Comment
  CHSC27890  Disporum smithii Susan Perkins 1978-4-25 42 Humboldt Redwood Park, e end of 13th St., Arcata, 0.8 mi e of City Hall. 7 mi nne of Eureka. 48 Comment
  HSC71215  Distichlis spicata Thomas W. Nelson, Doris K. Niles 1979-5-19 4693 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  RSA168808  Dodecatheon jeffreyi Joseph P. Tracy 1951-6-14 19406 Humboldt Snow Camp. 1402 Comment
  UC562750  Dodecatheon jeffreyi Joseph P. Tracy 1927-8-22 8340 Humboldt in cold wet meadow near High Prairie (Bald Mountain); Northern Coast Ranges, , nr High Prairie 1066 Comment
  UC249685  Draba verna Joseph P. Tracy 1922-4-2 5986 Humboldt near Carlotta (Van Duzen River); Northern Coast Ranges, Van Duzen River bar 30 Comment
  CAS-BOT-BC401537  Drosera rotundifolia Doris K. Kildale 1929-8-5 8772 Humboldt Big Lagoon Comment
  HSC63033  Drymocallis glandulosa J. P. Smith, J. O. Sawyer 1973-5-12 6668 Humboldt 2 mi. from Redwood Creek on Hoopa Rd. Comment
  JEPS47226  Drymocallis glandulosa var. glandulosa Lincoln Constance 1934-6-15 878 Humboldt summit of Grasshopper Peak South Fork Eel River, Bull Creek Region (Bull Creek Region) 975 Comment
  JEPS44246  Drymocallis lactea var. austiniae W. L. Jepson 1902-7-24 2113 Humboldt Trinity Summit Trinity Summit (on summit) 2133 Comment
  UC1239776  Dryopteris arguta Joseph P. Tracy 1931-1-24 9280 Humboldt Alton; Northern Coast Region 30 Comment
  CAS-BOT-BC427987  Dudleya caespitosa Carl B. Wolf 1927-8-29 1222 Humboldt Coast so. of Cape Mendocino at Devils Gate Comment
  JEPS19336  Eleocharis acicularis Joseph P. Tracy 1934-7-13 13393 Humboldt Dow's Prairie; dried pond bed 60 Comment
  UC213006  Eleocharis bella Joseph P. Tracy 1919-5-31 5180 Humboldt shores of Lack Pond, near Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC7316  Eleocharis macrostachya S. J. Roberts 1965-5-8 51 Humboldt 1 mi. S of junction of Old Arcata Rd. and Bayside Cutoff Comment
  HSC7320  Eleocharis macrostachya C. B. Wolf 1927-8-22 793 Humboldt Big Lagoon Comment
  UC1103655  Eleocharis macrostachya Joseph P. Tracy 1935-8-25 14750 Humboldt Stone Lagoon 3 Comment
  UC1103666  Eleocharis macrostachya Joseph P. Tracy 1935-5-25 13849 Humboldt Fort Seward 106 Comment
  UC303024  Eleocharis parishii Joseph P. Tracy 1926-8-12 7767 Humboldt near S fork Trinity River Valley; Northern Coast Ranges 182 Comment
  RSA10130  Elymus X hansenii Joseph P. Tracy 1930-7-19 9054 Humboldt South Fork Mountain; open glades long summit near Blake Lookout 1738 Comment
  UC1137130  Elymus X macounii August L. Hormay 1932-5-12 Humboldt Bull Creek Road; near bridge Comment
  UC526781  Elymus elymoides subsp. elymoides Joseph P. Tracy 1932-7-14 10531 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC58665  Elymus elymoides var. elymoides G. L. Clifton, Griswold 1979-8-1 12052 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  RSA44455  Elymus glaucus Henry M. Pollard 1948-7-19 s.n. Humboldt River road between Orleans and Van Fleet Ranch Comment
  UC38194  Elymus glaucus Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5661 a Humboldt Hoopa Mt. Comment
  UCD61906  Elymus glaucus R. Tofsrud 1948-9-1 Humboldt Road junction near summit of Horse Mt. 1463 Comment
  HSC97930  Elymus glaucus subsp. glaucus Cara Witte 2007-6-19 295 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38 1220 Comment
  HSC9738  Elymus mollis subsp. mollis T. O. Preston 1963-5-6 21 Humboldt Sand dunes. Comment
  SD51252  Epilobium angustifolium Darley F. Howe 1961-8-1 3102 Humboldt 11.2 miles north of Trinidad on Highway 101. Comment
  JEPS31510  Epilobium campestre Joseph P. Tracy 1938-7-5 16010 Humboldt open flat by old Strong's District School House (5 mi e of town); Carlotta 45 Comment
  UC198613  Epilobium campestre Joseph P. Tracy 1916-6-19 4726 Humboldt Dobbyn Creek 182 Comment
  UC205232  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1920-8-15 5376 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  POM249603  Epilobium ciliatum subsp. ciliatum C. L. Hitchcock, J. P. Martin 1939-7-14 5441 Humboldt 7 miles east of Shelter Cove Comment
  POM225523  Epilobium ciliatum subsp. watsonii P. A. Munz 1936-8-13 14385 Humboldt Clam Beach Comment
  HSC98657  Epilobium densiflorum Cara Witte 2007-7-3 408 Humboldt White Oak Opening. 1242 Comment
  UC1198501  Epilobium densiflorum Joseph P. Tracy 1914-6-28 4517 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC55123  Epilobium glaberrimum subsp. fastigiatum G. L. Clifton, Terry Griswold 1979-8-1 11923 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  JEPS39329  Epilobium hallianum Joseph P. Tracy 1925-5-30 7046 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  RSA181877  Epilobium hallianum Joseph P. Tracy 1931-6-28 9589 Humboldt Northern Coast Ranges: Buck Mountain, lower foothills of its northwest slope 762 Comment
  HSC32152  Epilobium minutum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5598 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC72699  Epilobium minutum Gail Newton 1980-6-24 582 Humboldt Near Ladder Rock 1570 Comment
  HSC55147  Epilobium oregonense G. L. Clifton, Griswold 1979-8-1 12067 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC1196956  Epilobium septentrionale Joseph P. Tracy 1936-6-9 14901 Humboldt Mattole R. 3 mi. e. Petrolia; North Coast Region, Mattole R. 15 Comment
  POM290911  Epipactis gigantea Lyman Benson 1928-7-11 493 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  CAS-BOT-BC57105  Equisetum X ferrissii Henry M. Pollard 1946-8-27 s.n. Humboldt South side of Klamath River near Boyce Creek, Orleans region Comment
  HSC36227  Equisetum telmateia subsp. braunii John Rehling 1975-4-21 52 Humboldt Along Jolly Giant Creek behind HSU campus. Comment
  HSC70639  Equisetum telmateia subsp. braunii R. York 1980-5-18 594 Humboldt Near Black Mtn 792 Comment
  UC1187363  Equisetum telmateia subsp. braunii P. C. Hutchison 1961-3-3 885 Humboldt 1/2 ,i s Benbow (Hwy. 101, S. Fork Eel River) Comment
  UC526938  Equisetum telmateia subsp. braunii Joseph P. Tracy 1934-6-28 13268 Humboldt by Salmon Creek Northern Coast Ranges 9 Comment
  RSA21604  Equisetum telmateia var. braunii C. B. Wolf 1937-9-14 9351 Humboldt North Coast Range, Lord Ellis Road, 7.6 miles east of Blue Lake. 213 Comment
  RSA684699  Equisetum telmateia var. braunii N. R. Zabriskie, W. M. Zabriskie 1968-8-22 153 Humboldt Along road to Cap Mendocino. Comment
  CAS-BOT-BC213558  Eragrostis hypnoides Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans Region Comment
  RSA10056  Eragrostis hypnoides Joseph P. Tracy 1931-9-7 9663 Humboldt Trinity River Valley, at Willow Creek. Comment
  CAS-BOT-BC284096  Eragrostis pectinacea var. pectinacea Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  UCR52249  Erechtites argutus H. E. Parks 1937-1 24033 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC291178  Erechtites glomeratus L. R. Abrams 1916-7-18 6108 Humboldt Arcata to Trinidad, 18 mi along coast Comment
  HSC5490  Erechtites glomeratus H. E. Parks Aug 1941 24189 Humboldt Trinidad Comment
  HSC68152  Erechtites glomeratus J. O. Sawyer, J. P. Smith 1975-5-24 8081 Humboldt Off Samoa Blvd. across from the boat landing Comment
  RSA95039  Erechtites minimus F. W. Peirson 1923-7-10 3926 Humboldt A few miles from Garberville. Comment
  UCR48863  Erechtites prenanthoides R. D. Goeden, Don W. Ricker 1987-9-2 870902- 20 Humboldt Beside Mattole Rd at Bear River Ridge, south of Ferndale 525 Comment
  RSA783323  Erica lusitanica R. R. Halse 2010-3-25 7855 Humboldt Along US Hwy 101 ca. 9.7 miles S of Orick. 5 Comment
  HSC74435  Erigeron aliceae Gail Newton 1980-8-10 2065 Humboldt Near Blake Mountain 1707 Comment
  CAS-BOT-BC300370  Erigeron eatonii var. plantagineus Thomas W. Nelson; James L. Nelson 1980-6-10 5395 Humboldt North Coast Ranges. Jack Rabbit Valley. Along Swayback Ridge 4-wheel drive road 1 mile south of junction with Forest Service road 1493 Comment
  CAS-BOT-BC300675  Erigeron foliosus var. mendocinus Doris K. Kildale 1927-6-25 3585 Humboldt Near Ettersburg Comment
  UC594158  Erigeron glaucus S. K. Harris 1936-6-15 3380 Humboldt Trinidad Head. Comment
  HSC31557  Erigeron glaucus Glenn McGourty 1974-4-27 32 Humboldt Along side of Mattole River Comment
  HSC89429  Erigeron glaucus P. A. Daly 1984-6-16 31 Humboldt Open bluffs of Trinidad Head trail 61 Comment
  SD40123  Erigeron glaucus Edith A. Purer 1932-7-27 4143 Humboldt Comment
  SEINET4005694 Image available Erigeron philadelphicus O. M. Clark 1932-1 5312 Humboldt South Eureka. Comment
  UCD20386  Erigeron philadelphicus K. Esau 1934-5-6 s.n. Humboldt Fort Seward. Comment
  JEPS41378  Erigeron philadelphicus var. philadelphicus W. L. Jepson 1934-5-7 16688 Humboldt Bull Creek Comment
  HSC81654  Erigeron robustior Thomas W. Nelson, Jane P. Nelson 1980-7-13 6056 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  HSC13527  Eriodictyon californicum P. J. Zinke 1950-10-9 182 Humboldt E slope of King Peak 1159 Comment
  RSA134150  Eriodictyon californicum Percy C. Everett, E. K. Balls 1959-10-24 23953 Humboldt 2.8 miles southwest from Siskiyou-Humboldt Co. line, Somesbar to Orleans. 198 Comment
  HSC74726  Eriogonum compositum Gail Newton 1981-7-23 2275 Humboldt Near Bug Creek Butte 1494 Comment
  SBBG53807  Eriogonum latifolium C. M. Hoak 1931-7-14 Humboldt above Eureka Comment
  SEINET10479505  Eriogonum latifolium Mary Susan Taylor 1982-10-24 Taylor 5180 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  HSC35618  Eriogonum nudum var. nudum Thomas W. Nelson, B. Reinhardt 1975-7-30 2114 Humboldt E of Pilot Rock Comment
  RSA44500  Eriogonum nudum var. nudum H. M. Pollard 1947-8-22 s.n. Humboldt Klamath River bed near Fontana's Fishing Lodge, Orleans region Comment
  RSA46699  Eriogonum nudum var. nudum Doris K. Kildale 1927-6-25 3582 Humboldt Ettersburg Comment
  CAS-BOT-BC261722  Eriogonum nudum var. oblongifolium Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  RSA33411  Eriogonum nudum var. oblongifolium Doris K. Kildale 1927-7-1 3621 Humboldt Alton Hill Comment
  CAS-BOT-BC269867  Eriogonum nudum var. pubiflorum Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek - near Orleans Comment
  SEINET11938140  Eriogonum nudum var. pubiflorum J. P. Tracy 1950-1 19320 Humboldt along Klamath River at "Big Bar", just above Slat Creek 122 Comment
  CAS-BOT-BC267877  Eriogonum umbellatum Malcolm G. Smith 1966-6-1 s.n. Humboldt Horse Mountain Comment
  CAS-BOT-BC267968  Eriogonum umbellatum var. argus Joseph P. Tracy 1935-7-23 14133 Humboldt Trinity Summit, at Corral Prairie 1584 Comment
  HSC17370  Eriogonum umbellatum var. goodmanii J. Wendell Howe 1934-7-21 1314 Humboldt Horse Mtn., Cold Springs Comment
  UC198878  Eriophorum crinigerum H. N. Bolander, Kellogg, M. D. and Co. Humboldt Red Mt. Comment
  UC90307  Eriophyllum lanatum var. achilleoides W. W. Price 1890-7-1 Humboldt Mad River Comment
  POM288401  Eriophyllum lanatum var. grandiflorum Lyman Benson 1929-7-19 1862 Humboldt Dyerville to Matole River. Comment
  UC1199139  Eriophyllum lanatum var. grandiflorum Joseph P. Tracy 1911-7-6 3366 1/2 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity River 304 Comment
  CAS-BOT-BC301686  Eriophyllum lanatum var. lanceolatum Henry M. Pollard 1948-7-19 s.n. Humboldt Orleans to Van Fleet Ranch Comment
  HSC5585  Eriophyllum lanatum var. lanceolatum Lincoln Constance, R. C. Rollins 1942-5-12 2890 Humboldt Klamath River, 12 mi. N of Weitchpec 122 Comment
  RSA846  Eriophyllum staechadifolium E. R. Johnson 1928-8-25 1144 Humboldt Eureka Comment
  CAS-BOT-BC301922  Eriophyllum staechadifolium Joseph P. Tracy 1918-7-1 4971 Humboldt Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape 30 Comment
  UC275337  Erodium botrys Joseph P. Tracy 1923-5-13 6206 Humboldt near Bridgeville; Northern Coast Ranges 213 Comment
  HSC7229  Erodium cicutarium D. E. Anderson 1963-5-19 2463 Humboldt Barry Rd., 1/2 mi. W of Kneeland school Comment
  UC183565  Eryngium aristulatum var. aristulatum Joseph P. Tracy 1912-7 3777 Humboldt Alton Northern Coast Region, Alton 30 Comment
  HSC44569  Erysimum capitatum var. capitatum Brad Klipfel 1973-7-15 187 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57666  Erysimum capitatum var. capitatum G. L. Clifton, Terry Griswold 1979-7-25 10849 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC77515  Erysimum concinnum May Bugbee 1984-6-14 Humboldt Mattole Beach, S of mouth of Mattole River Comment
  CHSC93444  Erysimum menziesii Vernon H. Oswald 2000-4-3 9911 Humboldt Near the junction of New Navy Base Rd. and the road to Fairhaven on the North spit of Humboldt Bay. 9 Comment
  SEINET13679562 Image available Erythranthe floribunda Joseph P. Tracy 1911-1 3364 Humboldt Kobyo ranch, Along road between three creeks and mouth of willow creek. 762 Comment
  CAS-BOT-BC383051  Erythranthe guttata David B. Lowry 2005-5-16 PCK Humboldt Along Kneeland road, east of Slater Road 709 Comment
  HSC50933  Erythronium californicum G. L. Clifton, Overton 1979-6-3 3755 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  CAS-BOT-BC504308  Erythronium californicum Joseph P. Tracy 1938-6-13 15896 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC133332  Erythronium revolutum Harley P. Chandler 1901-6-1 1279 Humboldt Hupa Indian Reservation 1066 Comment
  CDA42403  Escallonia rubra R. Robison 2014-5-5 s.n. Humboldt Near Trinidad State Beach, east of park. 0 Comment
  HSC26453  Eschscholzia californica T. O. Osborne 1970-7-18 3 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  HSC26901  Eschscholzia californica Thomas W. Nelson 1973-7-27 1103 Humboldt SW of the airstrip at Kneeland Comment
  HSC58830  Eucephalus ledophyllus Overton, Butler 1979-8-2 12607 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC39172  Euchiton gymnocephalus D. E. Anderson, J. P. Smith 1971-6-28 - 1230 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC103276  Euonymus occidentalis Melinda Bailey 2014-10-8 Humboldt Kneeland, along Freshwater Creek. 762 Comment
  UC165820  Euonymus occidentalis var. occidentalis Joseph P. Tracy 1911-9-3 3539 Humboldt 1 mi. s.e. Eureka; Northern Coast Region 0 Comment
  UC1198979  Euphorbia spathulata Joseph P. Tracy 1926-5-9 7455 Humboldt near Bridgeville; Northern Coast Ranges 762 Comment
  UC502956  Euphorbia spathulata Joseph P. Tracy 1929-5-5 8578 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River (slopes and groves along South Fork of Eel River) 121 Comment
  JEPS31927  Eurybia radulina W. L. Jepson 1936-8-13 17895 Humboldt n of, Tuttle Ranch Garberville Comment
  HSC67010  Euthamia occidentalis J. P. Smith 1971-10-9 5005 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC41382  Festuca occidentalis J. O. Sawyer 1970-6-27 2304 Humboldt Site 318. 1494 Comment
  POM205853  Festuca rubra Jos Burtt Davy, Blasdale 1899-7-30 6180 Humboldt Ferndale. Comment
  UC1145215  Festuca rubra Joseph P. Tracy 1950-6-17 18838 Humboldt Eureka 3 Comment
  SEINET11683172  Festuca rubra K. S. Erdman 1970-1 4812 Humboldt Gold Bluff Beach about 3 mi NW of Berry Glen and US 101 (Redwood NP) Comment
  CAS-BOT-BC282515  Festuca subbiflora W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River Comment
  HSC103976  Fragaria chiloensis C. Reynolds 2015-4-12 35 Humboldt Along Freshwater Beach, near the Kuchel Visitor Center 1 Comment
  POM231291  Fragaria chiloensis D. D. Keck, Jens Clausen 1935-6-16 3390 Humboldt Mouth of Little River. Comment
  UC154220  Fragaria chiloensis J. P. Tracy 1906-4-29 2423 Humboldt Eureka, immediate vicinity of Comment
  HSC90467  Fragaria chiloensis Jean Hanson 1980-3-8 30 Humboldt Indian (Gunther) Island, in Humboldt Bay. W end of island, 200 ft. from SW shore Comment
  RSA296728  Fragaria chiloensis J. P. Smith 1977-6-30 9205 Humboldt Samoa Peninsula just east of the drag strip. Comment
  HSC44279  Fragaria vesca D. L. Goforth 1977-4-23 4 Humboldt 2.5 mi.. S of Shelter Cove Rd. S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC18399  Frangula californica Dale Thornburg 1968-11-10 Humboldt Hogback Ridge NE of Ammon Guard Station Comment
  CAS-BOT-BC52730  Frangula californica subsp. californica Doris K. Kildale 1928-10-7 6754 Humboldt Trinity River at mouth of Willow Creek Comment
  CAS-BOT-BC52745  Frangula californica subsp. californica Alice Eastwood 1943-6-11 18975 Humboldt State Azalea Grove Comment
  BLMAR113  Frangula californica subsp. californica Jennifer Anthony-Wheeler 1995-1-19 113 Humboldt King range, growing in open clrng arng rd to new king range admin 283 Comment
  CAS-BOT-BC59963  Frangula purshiana W. R. Dudley 1899-1-1 s.n. Humboldt Arcata. Comment
  HSC15539  Fritillaria affinis D. E. Anderson 1962-5-1 2189 Humboldt Junction of Redwood Creek Rd. and rd. to Hoopa Comment
  HSC43114  Fritillaria affinis Maralyn O'Meara 1974-5-14 362 Humboldt Beside Hwy. 36, 14.2 mi. E of Bridgeville Comment
  RSA249430  Galium ambiguum D. E. Anderson, T. Nelson, S. Dowty 1972-6-14 5596 Humboldt Mt Lassic and two smaller peaks to immediate E. 1768 Comment
  UC176063  Galium ambiguum subsp. ambiguum Joseph P. Tracy 1912-7-31 3938 Humboldt near summit Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC26464  Galium aparine T. O. Osborne 1970-5-17 17 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  UC35335  Galium bolanderi Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  HSC71717  Galium californicum M. A. Baker 1980-6-26 2441 Humboldt Near Sims Creek 610 Comment
  JEPS52864  Galium californicum subsp. californicum Lauramay T. Dempster and Jean Colton 1963-8-7 3889 Humboldt Redwood Hwy (101) just n Richardson Grove Comment
  UC1225914  Galium divaricatum Joseph P. Tracy 1946-7-13 17614 Humboldt 5 mi e Carlotta (by old Strong's District School House) 60 Comment
  UCD121759  Galium divaricatum Thomas W. Nelson; Jane P. Nelson 1977-9-4 3746 Humboldt Willow Creek. Comment
  UC35332  Galium muricatum C. C. Marshall 1888-1 Humboldt Comment
  UC416654  Galium parisiense Harley P. Chandler June, 1901 1305 Humboldt Hupa Valley North Coast Ranges, Hupa Indian Reservation 152 Comment
  UC602546  Galium parisiense Joseph P. Tracy 1937-7-11 15421 Humboldt Garberville 152 Comment
  BLMAR206  Galium parisiense Jennifer Anthony-Wheeler 1996-7-9 206 Humboldt Pilots ridge., growing in warm, dry, rocky soil in understroy in mixed hardwood forest 1280 Comment
  UC1196091  Galium porrigens Joseph P. Tracy 1898-7-13 259 Humboldt near Hydesville; Northern Coast Ranges 60 Comment
  HSC57325  Galium triflorum Overton, Butler 1979-7-24 9643 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  SEINET12335256  Galium triflorum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -278 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  CAS-BOT-BC303392  Gamochaeta ustulata Joseph P. Tracy 1936-8-23 15163 Humboldt Carlotta 60 Comment
  HSC26353  Gamochaeta ustulata T. O. Osborne 1970-9-16 54 Humboldt Trinidad Bay, Prisoner Rock Comment
  UC127734  Gamochaeta ustulata Harley P. Chandler May 1901 1139 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  UC204756  Gamochaeta ustulata Joseph P. Tracy 1918-7-5 5028 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  HSC90249  Gamochaeta ustulata Jean Hanson 1980-5-24 59 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  UC166543  Gamochaeta ustulata Joseph P. Tracy 1911-7-9 3462 Humboldt near mouth of Willow Creek; North Coast Ranges, Valley of Trinity River, Willow Creek 152 Comment
  CAS-BOT-BC188544  Garrya elliptica L. R. Abrams 1916-7-18 6137 Humboldt Trinidad Comment
  CAS-BOT-BC194527  Garrya elliptica D. E. Breedlove 1962-7-7 3056 Humboldt On extensive sand dunes 1.5 miles south of Samoa [Samosa] on peninsulaon western side of Humboldt Bay Comment
  HSC8387  Garrya elliptica H. E. Parks 1933-2 4287 Humboldt Trinidad, cliffs near ocean Comment
  HSC89422  Garrya elliptica P. A. Daly 1984-5-13 18 Humboldt Along trail at Trinidad Head 61 Comment
  RSA485907  Garrya elliptica G. Dahling 1973-06 1229 Humboldt Along Highway 101, about ten miles north of Trinidad. Comment
  UC1196888  Garrya elliptica Joseph P. Tracy 1924-1-20 6595 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region 6 Comment
  HSC72925  Garrya fremontii Gail Newton 1980-7-22 1679 Humboldt Near Devils Backbone 231 Comment
  LA40291  Garrya fremontii Carl B. Wolf; 1930-10-24 1762 Humboldt along Klamath River, 1 mi. above the mouth of Slate Creek 243 Comment
  UC502980  Garrya fremontii Joseph P. Tracy 1932-3-6 9773 Humboldt Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UCD121142  Garrya fremontii George W. Jordan 1922-11-18 s.n. Humboldt Showers Pass. Comment
  UCD39985  Garrya fremontii Rodney Gale Myatt 1971-9-22 1200 Humboldt Along Salmon River, southeast of Somes Bar, and northeast of Hoopa Reservation. 426 Comment
  UC1103734  Gastridium ventricosum Joseph P. Tracy 1913-7-20 4380 Humboldt at Berry's ranch Redwood Creek; Northern Coast Ranges, Redwood Creek 304 Comment
  JEPS8446  Gaultheria ovatifolia Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3413 Humboldt meadow at Snow Camp, ridge between Mad River and Redwood Creek (Bald Mountain ridge) Snow Camp 1432 Comment
  UC604656  Gaultheria ovatifolia Joseph P. Tracy 1938-9-25 16168 Humboldt Bald Mountain, at Lake Prairie Bald Mountain; , Lake Prairie 1066 Comment
  CAS-BOT-BC58913  Gaultheria shallon Alice Eastwood 1907-4-21 20 Humboldt Port Trinidad Comment
  HSC100472  Gaultheria shallon Carl C. Marshall Mar 1886 143 Humboldt Everywhere. Comment
  RSA134599  Gaultheria shallon P. C. Everett, E. K. Balls, George B. Everett 1959-10-25 23964 Humboldt 10 mi. NE from Blue Lake, U.S. Hwy. 299, Arcata to Willow Creek. 457 Comment
  UC1197592  Gaultheria shallon J. P. Tracy 1901-5-30 1114 Humboldt immediate vicinity Eureka 0 Comment
  UC1541490  Gaultheria shallon W. K. Parks 1932-6-1 1404 Humboldt vicinity of Trinidad Comment
  UCSB4793  Gaultheria shallon Keator, Glenn 1958-6-18 Humboldt Road between Bridgeville and Kneeland Comment
  POM223144  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10400 Humboldt Klamath Mountains, Trinity Summit, open ground at Corral Prairie. 1524 Comment
  UC1196958  Gayophytum humile Joseph P. Tracy 1933-7-26 12918 Humboldt Grouse Mountain 1524 Comment
  UC35402  Gayophytum humile Chesnut and Drew 1888-7-20 Humboldt S. Fork Mt. Comment
  HSC54746  Gayophytum racemosum G. L. Clifton, Griswold 1979-7-26 10230 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  HSC58834  Gayophytum racemosum Overton, Butler 1979-7-31 11406 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  JEPS24349  Gentiana calycosa Joseph P. Tracy 1939-8-16 16412 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  JEPS24351  Gentiana plurisetosa Joseph P. Tracy 1919-9-22 5276 Humboldt Trinity Summit 1828 Comment
  JEPS47022  Gentiana sceptrum Joseph P. Tracy 1924-8-3 6768 Humboldt Northern Coast Region, Big Lagoon Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  RSA69772  Gentiana sceptrum R. S. Woglum 1938-8-29 2038 Humboldt Trinidad Comment
  SD42345  Gentiana sceptrum Carl B. Wolf 1937-9-12 9328 Humboldt Big Lagoon; south side along Redwood Highway. 6 Comment
  UCD103408  Geranium molle Joseph M. DiTomaso 1976-3-28 346 Humboldt Samoa Cookhouse in Samoa. Comment
  UC249572  Geranium oreganum Joseph P. Tracy 1922-6-18 6094 Humboldt Head of Middle Yager Creek Northern Coast Ranges 762 Comment
  UC1198959  Geranium oreganum Joseph P. Tracy 1924-4-27 6663 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  JEPS44855  Geum macrophyllum Milo S. Baker 1923-8-1 184 Humboldt roadside from Kneeland to Eureka Comment
  SEINET200731  Gilia capillaris Joseph P. Tracy 1933-7-25 12866 Humboldt Grouse Mtn. 1524 Comment
  HSC16967  Gilia capitata J. Wendell Howe 1931-6-7 Humboldt Wildcat Rd. W of Ferndale Comment
  HSC97970  Gilia capitata subsp. capitata Cara Witte, Michael Scott 2007-6-22 346 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  UC907951  Gilia capitata subsp. capitata Joseph P. Tracy 1935-6-23 13995 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC226151  Gilia capitata subsp. pacifica Doris K. Kildale 1927-5-15 3295 Humboldt Mattole River Valley Comment
  POM193010  Gilia capitata subsp. pacifica H. E. Parks, Joseph P. Tracy 1930-5-25 0793 Humboldt Near Bridgeville. Comment
  POM208997  Gilia capitata subsp. pacifica Lincoln Constance 1934-5-23 621 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park 366 Comment
  UC1197922  Gilia capitata subsp. pacifica Joseph P. Tracy 1921-5-30 5498 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC133647  Gilia capitata subsp. pacifica Joseph P. Tracy 1908-8-1 3068 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  JEPS76131  Gilia millefoliata Joseph P. Tracy 1917-5-30 4794 Humboldt Little River Beach Northern Coast Ranges, Little River Beach 6 Comment
  UC1197909  Gilia millefoliata Joseph P. Tracy 1937-6-5 15329 Humboldt Little River Beach 6 Comment
  JEPS69508  Gilia sinistra subsp. sinistra Joseph P. Tracy 1926-6-27 7679 Humboldt Horse Mountain 1432 Comment
  UC1198625  Glaux maritima Joseph P. Tracy 1934-7-3 13303 Humboldt around Humboldt Bay (along Freshwater Slough); Northern Coast Region, Freshwater Slough 3 Comment
  SEINET12118385  Glehnia leiocarpa L. R. Abrams 1916-1 6140 Humboldt at Trinidad Comment
  CAS-BOT-BC218434  Glehnia littoralis subsp. leiocarpa Joseph P. Tracy 1933-8-25 12994 Humboldt Centerville Beach, south of mouth of Eel River 6 Comment
  HSC10078  Glyceria declinata R. S. White 1965-5-19 87 Humboldt 5 mi. S of Samoa along the Samoa Rd. Comment
  UC212892  Glyceria elata Joseph P. Tracy 1919-9-25 5297 Humboldt Trinity Summit; Northern Coast Ranges 1889 Comment
  HSC100452  Gnaphalium Carl C. Marshall Sep 1886 346 Humboldt North Fork. Comment
  CAS-BOT-BC302537  Gnaphalium palustre H. E. Parks; S. T. Parks 1937-8-1 24080 Humboldt Spruce Cove, Trinidad Comment
  CDA6019  Gnaphalium palustre E. C. Whitney 1961-7-2 Humboldt A. Hartman property, McKinnleyville. 0 Comment
  POM247280  Gnaphalium sphaericum Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta. 30 Comment
  HSC29721  Goodyera oblongifolia J. D. Ackerman 1973-12-17 122 Humboldt 2 mi. N of Manila Comment
  HSC98555  Goodyera oblongifolia Cara Witte 2007-9-3 643 Humboldt Forest Service Road 5N09. 1 mile east of intersection with National Forest 1. 1332 Comment
  UC1196438  Goodyera oblongifolia Joseph P. Tracy 1913-9-21 4412 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UCD132548  Grindelia camporum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1179 Humboldt Around Fields Landing. Comment
  CAS-BOT-BC304749  Grindelia hirsutula Doris K. Kildale 1925-7-10 944 Humboldt Dyerville 45 Comment
  HSC89904  Grindelia hirsutula Leonel Arguello 1989-7-14 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata. Comment
  RSA125369  Grindelia hirsutula Peter H. Raven, Richard Snow 1958-7-21 13659 Humboldt Cape Mendocino Comment
  SEINET10724140  Grindelia hirsutula Harold E. Parks Parks 24190 Humboldt Gravel near water, Big Lagoon. Comment
  HSC75691  Hackelia bella Bill Copeland 1980-6-26 302 Humboldt Near Murphy Meadow 914 Comment
  HSC3670  Hackelia setosa J. P. Tracy 1937-7-25 15547 Humboldt Trinity Summit; on ridge 2 mi. E of Grove's Prairie 1524 Comment
  CAS-BOT-BC302441  Hazardia whitneyi var. discoidea Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  POM161485  Hazardia whitneyi var. discoidea Joseph P. Tracy 1919-9-23 5287 Humboldt Trinity Summit 1829 Comment
  HSC58097  Helenium bigelovii G. L. Clifton, Griswold 1979-8-1 12015 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC58152  Helenium bigelovii G. L. Clifton, Griswold 1979-8-2 12204 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC75258  Helenium bigelovii J. O. Sawyer, M. A. Ericksen 1980-8-18 4052 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  HSC99503  Helenium bigelovii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 163 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
  UC1409057  Helenium bolanderi Robert F. Thorne and P. Everett 1965-8-7 35194 Humboldt at s end Big Lagoon 1 Comment
  RSA20846  Helenium bolanderi C. B. Wolf 1937-6-18 8886 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  SEINET11840975  Helenium bolanderi J. P. Tracy 1901-1 1204 Humboldt Humboldt Bay 30 Comment
  HSC100435  Helenium puberulum Carl C. Marshall Jul 1886 350 Humboldt Liscom's Hill. Comment
  CAS-BOT-BC310080  Hemizonella minima L. P. Janeway 1984-6-23 897 Humboldt Titlow Hill 1478 Comment
  UC176472  Hemizonella minima Joseph P. Tracy 1908-6 2834 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Buck Mountain 1219 Comment
  CAS-BOT-BC306184  Hemizonia congesta subsp. congesta J. Clausen 1932-9-18 679 Humboldt 4 miles southwest of Capetown on the road to Petrolia 213 Comment
  CAS-BOT-BC309992  Hemizonia congesta subsp. tracyi Doris K. Kildale 1925-10-1 1697 Humboldt Kneeland Prairie Comment
  UC450002  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1923-6-20 6337 Humboldt near Briceland; North Coast Ranges 304 Comment
  CDA20030  Heracleum lanatum P. Haggard 2002-8-23 PDR P 070809 Humboldt North Coast; Wildlife Refuge in the vicinity of Eureka. Sheet 1 of 3 0 Comment
  UC180205  Heracleum lanatum Joseph P. Tracy 1914-6-14 4511 Humboldt Carlotta North Coast Ranges, Carlotta 60 Comment
  UC673045  Heracleum lanatum Joseph P. Tracy 1940-9-26 16730 Humboldt s. end Humboldt Bay (Salmon Creek Valley); , Salmon Creek Valley 9 Comment
  UC673047  Heracleum lanatum Joseph P. Tracy 1940-9-26 16730 Humboldt s. end Humboldt Bay (Salmon Creek Valley); , Salmon Creek Valley 9 Comment
  BLMAR674  Heracleum maximum Jennifer Wheeler 2013-6-7 674 Humboldt King range, Mattole Beach parking lot 6 Comment
  HSC76406  Heracleum maximum Denis Kearns 1981-7-23 428 Humboldt Near Whiteys Peak. 1524 Comment
  SD53244  Heracleum maximum Darley F. Howe 1962-5-22 3301 A Humboldt 0.5 miles north of Orick on # 101 29 Comment
  UC1199420  Hesperevax acaulis var. robustior Joseph P. Tracy 1937-5-31 15322 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley 152 Comment
  UC582500 Image available Hesperevax acaulis var. robustior Joseph P. Tracy 1932-5-1 9867 Humboldt vicinity of Garberville 121 Comment
  UC34985  Hesperolinon micranthum Hy-Am Pum July 1888 Humboldt Comment
  CAS-BOT-BC143652  Heteromeles arbutifolia L. B. Kildale 1930-7-7 10200 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  CAS-BOT-BC311053  Heterotheca oregona var. oregona John Thomas Howell 1936-8-29 12889 Humboldt Bluffs of Eel River, 11 miles n. of Garberville Comment
  CAS-BOT-BC311077  Heterotheca oregona var. rudis S. K. Harris 1938-8-24 s.n. Humboldt Eel River, near Fernbridge Comment
  BLMAR81  Heuchera micrantha Jennifer Anthony-Wheeler 1994-6-2 81 Humboldt IAQUA, growing along moist, rocky banks 3/4mi from pvd 853 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
  CAS-BOT-BC312386  Hieracium albiflorum Ira L. Wiggins 1930-7-22 4691 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  CAS-BOT-BC312398  Hieracium albiflorum Carl D. Duncan 1920-9-28 s.n. Humboldt Hoopa Comment
  HSC57892  Hieracium albiflorum Overton, Butler 1979-7-31 11464 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  HSC98711  Hieracium albiflorum Cara Witte 2007-7-25 577 Humboldt Forest Service Road 5N10. 2.5 miles east of intersection with National Forest 1. 1327 Comment
  UC1199461  Hieracium albiflorum Joseph P. Tracy 1926-11-7 7825 Humboldt Table Bluff Northern Coast Region, Humboldt Bay, Table Bluff 152 Comment
  UCD150387  Hippuris vulgaris William Anderson 1965-6-26 s.n. Humboldt Mad River Slough. Comment
  CAS-BOT-BC280735  Holcus lanatus L. R. Abrams 1916-7-11 6018 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  HSC10127  Holcus lanatus True Hoyle 1967-6-24 25967 Humboldt 20 mi. S of Arcata near Little Salmon Creek on the Marvin Stapp Ranch 46 Comment
  HSC27046  Holcus lanatus Brad W. Klipfel 1973-8-24 284 Humboldt Near Hwy. 101 Comment
  HSC37255  Holcus lanatus Lon Hall 1975-6-19 391 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  POM352401  Holcus lanatus Edith A. Purer 1932-7-30 16085 Humboldt South of Orick. Comment
  RSA53833  Holcus lanatus Henry M. Pollard 1946-8-10 s.n. Humboldt South of Klamath River and east of Perch Creek, Orleans region. Comment
  SBBG83770  Holcus lanatus J. D. Hobson -Jul-1966 Humboldt S end of sand spit forming Eureka Harbor, 10 mi S of Eureka; Loleta Comment
  HSC90680  Holcus mollis Gail Newton 1982-6-10 3589 Humboldt Elk River Wildlife Area, Eureka Comment
  CAS-BOT-BC149900  Holodiscus discolor Elmer I. Applegate 1923-9-12 3989 Humboldt Stone Lagoon Comment
  HSC41284  Holodiscus discolor Brad Klipfel 1974-7-23 476 Humboldt Horse Mtn. Comment
  HSC43843  Holodiscus discolor Maralyn O'Meara 1974-5-18 497 Humboldt Fisher Rd. near Carlotta Comment
  HSC58138  Holodiscus discolor Gilbert Muth 1979-8-1 12156 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC75944  Holodiscus discolor Overton, Butler 1979-7-24 9705 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  SD61035  Holodiscus discolor Darley F. Howe 1964-8-10 Humboldt 1.8 mile from Ferndale on rd. to Petrolia 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
  UC1103486  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1943-7-18 17439 Humboldt Big Lagoon 6 Comment
  RSA87057  Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt About Humboldt Bay, Mouth of Elk River. 3 Comment
  HSC22746  Hordeum marinum subsp. gussoneanum D. E. Anderson 1970-6-14 5124 Humboldt 2 mi. E of Mad River Bridge in Butler Valley. Comment
  UC14220  Horkelia californica subsp. dissita Chestnut and Drew 1888-5-1 Humboldt Grouse Creek Comment
  CDA20429  Horkelia tridentata P. Haggard 2002-8-5 PDR P 070940 Humboldt Northwestern California; USFS property roadside in the vicinity of Blue Lake. 0 Comment
  HSC97584  Horkelia tridentata subsp. flavescens C. Witte 2007-5-18 43 Humboldt Near Bottleneck Spring. 1575 Comment
  JEPS83627  Horkelia tridentata subsp. flavescens R. Raiche 1988-5-12 80113 Humboldt 6.6 mi sw Hoopa (on Bair Rd., Supply Crk. drainage) Comment
  RSA259582  Horkelia tridentata subsp. flavescens D. E. Anderson 1972-6-20 s.n. Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit. Comment
  HSC44374  Hosackia crassifolia Thomas W. Nelson, Jane P. Nelson 1977-7-4 3614 Humboldt Along road N of Alder Springs. 1524 Comment
  HSC44334  Hosackia oblongifolia var. oblongifolia Brad Klipfel 1975-6-17 676 Humboldt Horse Mtn. Comment
  HSC100885  Hosackia subpinnata Carl C. Marshall 9 Humboldt No data. Comment
  SBBG64581  Hydrocotyle ranunculoides A. Keedy 1988-9-20 13 Humboldt Arcata Salt Marsh Project Comment
  HSC13555  Hydrophyllum occidentale Elrid H. Spinas 1948-6-16 52 Humboldt Horse Mtn. Comment
  HSC13557  Hydrophyllum occidentale H. E. Parks, J. P. Tracy 1935-6-16 Humboldt Buck Mtn. Comment
  HSC58018  Hypericum anagalloides G. L. Clifton 1979-7-31 11820 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC99603  Hypericum anagalloides Gordon Leppig 1997-6-19 459 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  JEPS66787  Hypericum anagalloides W. H. Shockley 1879-1 Humboldt Eureka Comment
  UC175706  Hypericum anagalloides Joseph P. Tracy 1912-7-14 3747 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  CAS-BOT-BC400795  Hypericum anagalloides Doris K. Kildale 1925-8-17 1241 Humboldt Trinity Summit - Waterdog Lake 1828 Comment
  HSC91879  Hypericum anagalloides E. Mackey 1987-8-29 Humboldt Patrick's Point State Park, in woods near Palmer's Point Comment
  CAS-BOT-BC411326  Hypericum calycinum Robert F. Thorne; P. Everett 1965-8-9 35315 Humboldt Clam Beach County Park 3 Comment
  JEPS79906  Hypericum formosum var. scouleri Joseph P. Tracy 1935-7-21 14112 Humboldt opposite mouth of Willow Creek; Trinity R. Valley, Lack Pond 152 Comment
  RSA8307  Hypericum formosum var. scouleri I. L. Wiggins 1932-7-18 5886 Humboldt Boggy meadow between Arcata and Bayside Comment
  UC180207  Hypericum formosum var. scouleri Joseph P. Tracy 1914-7-21 3751 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC668260  Hypericum formosum var. scouleri Joseph P. Tracy 1935-7-21 14112 Humboldt opposite mouth of Willow Creek (Lack Pond); Trinity R. Valley, Lack Pond 152 Comment
  HSC75374  Hypericum perforatum J. O. Sawyer, M. A. Ericksen 1980-7-7 3576 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  UC1198412  Hypericum perforatum Joseph P. Tracy 1926-7-25 7754 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 152 Comment
  BLMAR223  Hypericum perforatum Jennifer Anthony-Wheeler 1996-7-11 223 Humboldt N. Dobbyn creek 1005 Comment
  HSC36441  Hypericum perforatum John Rehling 1974-7-12 10 Humboldt Bald Hills Rd. 23.5 mi. from Hwy. 101 Comment
  RSA94822  Hypochaeris glabra F. W. Peirson 1923-7-9 3934 Humboldt State Park on Eel River Comment
  JEPS36538  Hypochaeris radicata Lincoln Constance 1934-5-31 762 Humboldt along n side Bull Creek (from w boundary of park to Grasshopper Peak Road, Squaw Creek Road); South Fork Eel River, Bull Creek Region, Bull Creek flat Comment
  HSC100106  Hypochaeris radicata A. Montalvo 1975-5-24 271 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC79460  Hypochaeris radicata Kenneth Clark 1980-6-14 676 Humboldt On western slope above Dead Man's Gulch (near parking access) 145 Comment
  HSC90684  Hypochaeris radicata Gail Newton 1982-5-1 2488 Humboldt Eureka, Elk River Wildlife Area Comment
  UCD128252  Ilex aquifolium Linda M. Barker 1976-6-14 1594 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC123494  Iliamna latibracteata Doris K. Kildale 1926-7-5 2312 Humboldt Prairie Creek, near Davidson's. Comment
  POM205521  Iliamna latibracteata F. W. Peirson 1923-7-11 s.n. Humboldt Between Eureka and Crescent City Comment
  UC1173717 Image available Iliamna latibracteata Joseph P. Tracy 1939-7-23 16350 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
Read comments
Feb 27 2012
  HSC47580  Iris douglasiana Sheila Logan 1978-4-10 176 Humboldt Redwood Park behind HSU campus Comment
  JEPS17244  Iris douglasiana W. L. Jepson 1927-7-3 12360 a Humboldt Meyers Station Comment
  POM290986  Iris douglasiana Lyman Benson 1929-6-18 1734 Humboldt North of Arcata Comment
  UC1174761  Iris douglasiana L. W. Lenz and E. K. Balls 1951-5-8 16508 Humboldt 14.7 mi n Trinidad (Hwy 101) 6 Comment
  HSC45312  Iris tenax subsp. klamathensis R. York 1978-5-11 164 Humboldt Along logging road off Bark Shanty Rd., 4 mi. above Orleans Comment
  RSA135930  Iris tenax subsp. klamathensis Lee W. Lenz 1953-5-16 18310 Humboldt 0.25 miles S of Orleans on Klamath River 122 Comment
  UC632469  Iris tenax subsp. klamathensis E. W. Gifford Jul 1939 Humboldt Orleans Comment
  HSC79345  Iris tenuissima T. Jimerson, J. Pageau 1979-5-1 442 Humboldt 3.35 mi. S of Hwy. 96 on Red Cap Rd., Orleans Comment
  HSC6800  Isatis tinctoria D. E. Anderson 1965-5-1 3569 Humboldt Slides along Hwy. 96 and Klamath River, 3-4 mi. E of Weitchpec Comment
  UC667943  Isoetes nuttallii Joseph P. Tracy 1938-7-7 16034 Humboldt at Cold springs Grouse Mt. 1432 Comment
  HSC97440  Isolepis cernua Ivy Watson 2008-10-11 53 Humboldt N of river mouth, along small tributary E of sand dunes 4 Comment
  RSA246917  Isolepis cernua Robert F. Thorne, Percy C. Everett 1965-8-7 35215 Humboldt Samoa Peninsula: near sea level Comment
Read comments
Sep 12 2018
  UC668264  Isopyrum stipitatum Joseph P. Tracy 1935-5-5 13802 Humboldt Kneeland Prairie 822 Comment
  CAS-BOT-BC340152  Jaumea carnosa Malcom A. Nobs; S. Galen Smith 1949-8-3 1173 Humboldt Around Fields Landing Comment
  CHSC96733  Juncus balticus subsp. ater Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon County Park, Big Lagoon Bog. NAD 27 UTM Zone 10, 405321E, 4557202N. 3 Comment
  HSC38832  Juncus bolanderi R. Sutherland 1976-8-13 813876 Humboldt Whittemaore Grove at edge of forest 213 Comment
  JEPS66910  Juncus bolanderi Joseph P. Tracy 1918-7-3 4992 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  RSA32913  Juncus breweri A. A. Heller 1929-8-4 s.n. Humboldt Little River. Comment
  RSA340075  Juncus breweri Harold Lint 1964-4-1 C- 306 Humboldt Dry Lagoon State Park, Highway 101. Comment
  HSC13999  Juncus bufonius C. S. Chavez 1965-5-9 70 Humboldt Jct. of Bayside and Freshwater Rds. Comment
  RSA168857  Juncus capitatus Joseph P. Tracy 1948-6-13 18045 Humboldt Dobbyn Creek; At the former Will Perry Place. 152 Comment
  HSC102210  Juncus confusus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1125 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC1103048  Juncus covillei var. obtusatus Joseph P. Tracy 1918-7-5 5000 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  SD51269  Juncus effusus subsp. pacificus Darley F. Howe 1961-8-2 Humboldt 8.5 miles east of Orick, on Bald Mounatin Road. 609 Comment
  SEINET11789636  Juncus falcatus J. P. Tracy 1930-1 9218 Humboldt N end of Humboldt Bay Comment
  UC1152091  Juncus falcatus subsp. sitchensis Joseph P. Tracy 1938-7-6 16019 Humboldt sw corner Big Lagoon Comment
  HSC91872  Juncus hesperius E. Mackey 1987-8-28 Humboldt Patrick's Point State Park, Palmer's Point Comment
  UC1103057  Juncus hesperius J. P. Tracy 1900-8-26 931 Humboldt immediate vicinity Eureka 0 Comment
  HSC56395  Juncus laccatus Terry Griswold, Marvin Butler 1979-7-11 6963 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek 1320 Comment
  HSC58027  Juncus laccatus G. L. Clifton 1979-7-31 11842 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA183598  Juncus saximontanus D. E. Anderson 1965-9-5 4089 Humboldt Along Mad River, ca. 3 miles south of Blue Lake. Comment
  HSC71728  Juncus tenuis M. A. Baker 1980-6-26 2453 Humboldt Near Sims Creek 610 Comment
  UC194808  Juncus xiphioides Joseph P. Tracy 1915-9-12 4671 Humboldt Eel River, at mouth of Laribee Creek Northern Coast Ranges, Laribee Creek 60 Comment
  UC146235  Keckiella corymbosa Joseph P. Tracy 1908-7-31 2935 Humboldt Bridgeville Northern Coast Ranges (rocks along Van Duzen River) 152 Comment
  UC41735  Keckiella corymbosa Chesnut and Drew 1888-7-10 Humboldt Jarnigans's Comment
  POM206591  Koeleria macrantha Jos Burtt Davy, W. C. Blasdale 1899-6-9 5375 Humboldt Near Harris Comment
  HSC69892  Lagophylla ramosissima Thomas W. Nelson, Jane P. Nelson 1977-7-29 3639 Humboldt Beside S.R. 36 at head of Larabee Valley 823 Comment
  HSC26842  Lamium amplexicaule Thomas W. Nelson 1971-1-8 323 Humboldt Ferndale next to Co. Fair Grounds Comment
  CAS-BOT-BC352933  Lasthenia glaberrima Joseph P. Tracy; Harold E. Parks 1935-6-16 11274 Humboldt Buck Mt. Lower N.W. slopes 792 Comment
  UC169304  Lathyrus glandulosus Joseph P. Tracy 1912-7-26 3855 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC34616  Lathyrus japonicus Chirs Busik, P. K. Sather 1974-5-9 Humboldt Clam Beach County Park at the mouth of Strawberry Creek. Comment
  HSC14742  Lathyrus littoralis D. B. Bader 1963-4-1 17 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  POM199443  Lathyrus littoralis H. E. Parks 1930-5-24 0798 Humboldt Little River Lagoon. Comment
  UC1128970  Lathyrus littoralis H. S. Yates 1936-6-16 5658 Humboldt 0.5 mi sw Samoa; Eureka Quad. 3 Comment
  UC1222415  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1942-6-23 17226 Humboldt 1 mi w Mud Springs; Trinity Summit 1158 Comment
  HSC73128  Lathyrus polyphyllus M. A. Baker 1980-5-18 1283 Humboldt Near Black Mtn. 1006 Comment
  HSC100519  Lathyrus polyphyllus Carl C. Marshall Mar 1886 147 Humboldt Near Mad River. Comment
  UC495709  Lathyrus polyphyllus H. E. Parks and Joseph P. Tracy 1931-5-24 9455 Humboldt Kneeland, near school house Northern Coast Ranges 762 Comment
  UCD106344  Lathyrus polyphyllus W. Williams 1951-1 s.n. Humboldt location unknown. Comment
  UC1112278  Lathyrus torreyi R. E. Nelson 1956-7-3 193 Humboldt 1.5 mi s Brush Mountain (in vicinity of Salyer); Six Rivers National Forest, Salyer 792 Comment
  UC15357  Lathyrus torreyi H. N. Bolander 1867-1 6506 Humboldt Shelter Cove Comment
  UC33512  Lathyrus torreyi Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC1199071  Lathyrus vestitus Joseph P. Tracy 1901-6-2 1120 Humboldt immediate vicinity Eureka 0 Comment
  UC162589  Lathyrus vestitus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5358 Humboldt Bell Springs to Harris; North Coast Ranges 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
  CAS-BOT-BC325994  Layia carnosa David D. Keck; J. Clausen 1935-6-16 3381 Humboldt Mouth of Little River. Comment
  UC1223219  Layia gaillardioides Joseph P. Tracy 1950-6-8 187860 Humboldt Petrolia Comment
  RSA94973  Leontodon nudicaulis F. W. Peirson 1926-7-13 7056 Humboldt Near Blue Lake, Mad River. Comment
  CAS-BOT-BC339129  Leontodon saxatilis subsp. saxatilis H. S. Reed 1941-7-26 s.n. Humboldt Near Trinidad Comment
  HSC12416  Leontodon saxatilis subsp. saxatilis D. Santana Oct 1970 27 Humboldt Road side near Big Lagoon Comment
  UC582427  Leontodon saxatilis subsp. saxatilis Joseph P. Tracy 1936-8-23 15168 Humboldt vicinity Carlotta 30 Comment
  HSC26269  Lepidium oblongum Thomas W. Nelson 1971-5-31 448 Humboldt 915 Comment
  CAS-BOT-BC12876  Lepidium strictum Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta. Comment
  UC552286  Lepidium virginicum Joseph P. Tracy 1933-8-22 12992 Humboldt Mouth of Eel River North Coast Ranges 3 Comment
  UC1222651  Lepidium virginicum var. pubescens Joseph P. Tracy 1950-8-20 19317 Humboldt Orleans Comment
  HSC71061  Leptosiphon bicolor Thomas W. Nelson, Jane P. Nelson 1980-5-30 3395 Humboldt McKeown Ranch along rd. to Anderson's Ford 854 Comment
  HSC73816  Leptosiphon ciliatus Gail Newton 1980-6-7 119 Humboldt Near Brush Mtn. 1128 Comment
  HSC35595  Leptosiphon nuttallii Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2006 Humboldt French Camp, Bald Hills. Comment
  CAS-BOT-BC341826  Lessingia nemaclada Alice Eastwood 1921-7-21 10674 Humboldt Vanduzen [Van Duzen] River Comment
  JEPS20619  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET11810782  Lessingia nemaclada var. mendocina H. P. Chandler 1901-1 1503 Humboldt Klamath River, North Coast Ranges 427 Comment
  HSC67026  Leucanthemum vulgare J. P. Smith 1970-6-7 3803 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  UC181261  Leymus X vancouverensis Joseph P. Tracy 1914-7-16 4586 Humboldt Humboldt Bay Northern Coast Region, Eureka (same spot as my #3744) 0 Comment
  CAS-BOT-BC272246  Leymus triticoides David D. Keck 1944-7-11 5496 Humboldt Cape Mendocino 3 Comment
  JEPS81114  Ligusticum apiifolium Joseph M. DiTomaso 1980-6-27 1623 Humboldt 6 mi. from Orleans (on Gasquet-Orleans Rd.) Comment
  HSC70658  Ligusticum californicum Gail Newton 1980-7-14 1539 Humboldt Near Deadman Ridge 1097 Comment
  HSC74226  Ligusticum californicum M. A. Baker 1980-7-19 3021 Humboldt Near Bret Hole. 1814 Comment
  HSC74437  Ligusticum californicum Gail Newton 1980-8-10 2068 Humboldt Near Blake Mtn. 1707 Comment
  UC183567  Ligusticum californicum Joseph P. Tracy 1912-7-31 3951 Humboldt near summit Buck Mt.; Northern Coast Ranges, Buck Mt. 1524 Comment
  HSC56325  Ligusticum grayi Overton, Butler 1979-8-2 12668 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC75965  Ligusticum grayi Overton, Butler 1979-8-2 12584 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UC1197169  Ligusticum grayi Joseph P. Tracy 1932-7-12 10444 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  CDA36066  Ligustrum vulgare R. Robison 2011-6-3 Humboldt Trinidad State Beach, across road from Humboldt State Marine Research Center. 0 Comment
  UCD127580  Lilaeopsis occidentalis Malcolm A. Nobs; S. Galen Smith 1949-8-3 1166 Humboldt Eel River Valley, 1 mile south of Fields Landing. Comment
  HSC21521  Lilaeopsis occidentalis J. W. Johnson 1962-6-5 Humboldt Lanphere Farm, Samoa Peninsula, Hollow 10 Comment
  CAS-BOT-BC130511  Lilium bolanderi Tom Craig 1941-6-20 s.n. Humboldt Joyell Mine, 10 miles east of Green City Comment
  CAS-BOT-BC508392  Lilium columbianum Doris K. Kildale 1927-7-10 3739 Humboldt Gans Prairie, Bald Hills Road Comment
  CAS-BOT-BC508404  Lilium columbianum A. M. Vollmer; L. Beane 1951-7-1 s.n. Humboldt A few miles north of Arcata, logging road near U.S. 101 Comment
  HSC89438  Lilium columbianum P. A. Daly 1984-6-16 28 Humboldt Open bluffs of Trinidad Head trail 61 Comment
  UC175293  Lilium kelloggii Joseph P. Tracy 1913-7-20 4376 Humboldt e of Korbel (Bald Mountain); Northern Coast Ranges, Bald Mountain 914 Comment
  JEPS563  Lilium pardalinum Joseph P. Tracy 1937-7-24 15533 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  SEINET3992214  Lilium pardalinum Unknown 1937-7-24 15533 Humboldt Trinity Summit, head of Little Hors-Linto Creek 1372 Comment
  UC666957  Lilium pardalinum Joseph P. Tracy 1937-7-24 15533 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  JEPS62008  Lilium pardalinum Hilda Grinnell 1932-7-19 31 Humboldt near McKay Camp 1676 Comment
  RSA12542  Lilium pardalinum Carl B. Wolf 1934-7-2 5896 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  HSC77937  Lilium pardalinum subsp. vollmeri D. K. Imper 1982-7-23 1495 Humboldt Near Onion Lake. 1371 Comment
  RSA44370B  Lilium washingtonianum Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mountain 1677 Comment
  CDA35335  Limnanthes douglasii B. F. Kemp 1958-5-5 395 -58 Humboldt Loleta. 0 Comment
  HSC100568  Limnanthes douglasii Carl C. Marshall Jun 1887 68 Humboldt Damp soils throughout Humboldt. Comment
  HSC103462  Limnanthes douglasii subsp. douglasii Thomas W. Nelson, Jane Nelson 2005-5-1 9306 Humboldt Between State Route 101 and exit to Sunnybrae 5 Comment
  SD129683  Limnanthes douglasii var. nivea Barbara Ertter, Thomas J. Delendick 1987-5-16 6925 Humboldt Vista Point just west of Berry Summit on Highway 299, ca. 15 miles east of Arcata. 914 Comment
  UC665605  Linanthus androsaceus Victor Duran 1933-5-10 3403 Humboldt near Blocksburg Comment
  UC162582  Linanthus filipes Joseph P. Tracy 1911-7-9 3456 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity River 182 Comment
  UC524126  Linaria vulgaris Ira L. Wiggins 1932-7-19 5890 Humboldt near Trinidad Head Comment
  HSC98065  Linnaea borealis Cara Witte 2007-7-12 523 Humboldt Forest Service Road 5N10C. Approximately 1 mile south for intersection with Ammon Ridge Road. 1252 Comment
  HSC99851  Linnaea borealis subsp. longiflora T. Jimerson, J. Pageau 1979-6-12 533 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  HSC39788  Linum bienne Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  UCD110597  Linum lewisii var. lewisii Ferd Ambrosini; J. W. Logan 1926-4-1 s.n. Humboldt Fr. Ranch to Fernando. Comment
  HSC48978  Listera caurina Rudolf W. Becking 1979-7-15 Humboldt Fish Lake Comment
  CHSC110733  Listera cordata Dean Wm. Taylor 2011-5-4 21113 Humboldt Alderpoint Road in the vicinity of the headwaters of Knack Creek 777 Comment
  UC667091  Lithophragma campanulatum Joseph P. Tracy 1933-7-11 12689 Humboldt Grouse Mountain 1524 Comment
  UCD115917  Lobularia maritima Joseph P. Tracy 1946-6-2 17556 Humboldt Garden escape, sand dunes, near Samoa, on Humboldt Bay. 6 Comment
  UC582504  Logfia gallica Joseph P. Tracy 1935-5-30 13914 Humboldt Willow Creek, Trinity River Valley, Willow Creek 152 Comment
  HSC79445  Lolium perenne Kenneth Clark 1980-5-10 640 Humboldt Sheltor Cove, above Dead Man's Gulch. 122 Comment
  UC1222609  Lomatium dissectum Joseph P. Tracy 1950-6-15 18805 Humboldt 7 mi N of Harris (Jenk's Ranch) Comment
  POM32369  Lomatium dissectum var. dissectum Lincoln Constance, Alan Beetle, Joseph Tracy 1940-5-17 2617 Humboldt NW slope, Lower slopes of Buck Mtn, near Eureka. 793 Comment
  HSC55748  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-7-26 10275 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC56003  Lomatium macrocarpum Overton, Butler 1979-7-31 11454 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC1222756  Lomatium macrocarpum Joseph P. Tracy 1950-6-15 18823 Humboldt n.e. side Mail Ridge (at Huestis Rock); , Huestis Rock Comment
  HSC36117  Lomatium macrocarpum J. D. Ackerman 1975-6-18 471 Humboldt Big Hill Rd., 10.4 mi. E of Hoopa and Hwy. 96 Comment
  JEPS14256  Lomatium macrocarpum Joseph P. Tracy 1933-7-25 12894 Humboldt Grouse Mt. 1524 Comment
  UC673273  Lomatium macrocarpum Lincoln Constance and Reed C. Rollins 1942-5-12 2882 Humboldt 5 mi. n.e. Weitchpec (Klamath R. 1 mi. s. of Bluff Creek); Klamath-Siskiyou Region, Klamath R. 121 Comment
  JEPS14247  Lomatium tracyi Joseph P. Tracy 1930-7-10 8869 Humboldt Northern Coast Ranges, Brannan Mt. 1219 Comment
  JEPS118113  Lomatium utriculatum Dean W. Taylor 2005-6-9 19338 Humboldt vicinity Larabee Valley; ridge dividing Swift Creek from Horse Creek, ca. 2 air miles SSE of Larabee Valley 853 Comment
  OBI81593  Lomatium utriculatum Coll. Tracey, Viola Call 1964-6-20 2272 Humboldt South-facing rocky outcropping near summit above Van Duzen river 7miles east of Bridgeville. 853 Comment
  SD264747  Lomatium utriculatum Tracey Call, Viola Call 1964-6-19 2271 Humboldt Dry, west-facing hillside 1 mile north of Harris P.O. and ca 3I(c) miles south of Harris Jct. 609 Comment
  SEINET5222458  Lonicera involucrata Unknown 2002-8-22 85 Humboldt McKinleyville, along Fischer Road just N of the Mad River Comment
  UC162847  Lotus aboriginus J. P. Tracy 1901-5-12 1078 Humboldt immediate vicinity Eureka 0 Comment
  JEPS20790  Lotus aboriginus W. L. Jepson 1902-6 1944 Humboldt Berry Ranch Redwood Creek Comment
  HSC26447  Lotus corniculatus Brad Klipfel 1973-4-28 16 Humboldt Along Canyon Creek, SW of Korbel Comment
  UC1197292  Lotus humistratus Joseph P. Tracy 1931-6-14 9575 Humboldt Alton, along Van Duzen River Northern Coast Ranges, Van Duzen River 30 Comment
  UC168974  Lotus micranthus Joseph P. Tracy 1912-6-9 3647 Humboldt Alton Northern Coast Region 30 Comment
  JEPS55502  Lotus micranthus Lincoln Constance 1934-5-23 610 Humboldt above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC1197314  Lotus oblongifolius var. oblongifolius Joseph P. Tracy 1932-7-13 10519 Humboldt Corral Prairie Klamath Mountains 1524 Comment
  UC160992  Lotus purshianus var. purshianus Joseph P. Tracy 1911-8-27 3536 Humboldt Eureka Northern Coast Region 0 Comment
  UC176274  Lotus purshianus var. purshianus Joseph P. Tracy 1913-7-20 4386 Humboldt Redwood Creek, at crossing of Willow Creek road Northern Coast Ranges 304 Comment
  HSC58199  Luina hypoleuca Walter Overton 1979-8-2 12302 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1402 Comment
  HSC70698  Luina hypoleuca Gail Newton 1980-7-15 1554 Humboldt Near Sims Mtn. 1311 Comment
  SEINET10488353  Lupinus affinis Charles Piper Smith 1948-5-10 Smith 48248 Humboldt Hwy 101. 0.2 Miles s of miranda Comment
  SEINET200686  Lupinus albicaulis Joseph P. Tracy 1926-5-15 7495 Humboldt Kneeland Prairie. 762 Comment
  HSC97974  Lupinus albicaulis Cara Witte 2007-7-9 468 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  UC1223275  Lupinus albicaulis var. shastensis Joseph P. Tracy 1936-6-9 14908 Humboldt Mattole Valley Northern Coast Ranges, Mattole Valley (near Hadley place) 152 Comment
  UC1223268  Lupinus albicaulis var. shastensis Joseph P. Tracy 1949-8-7 18433 Humboldt on road from Hoopa to Box Camp at summit of ridge near where the road to Big Hill turns off Trinity Summit; , rd fr Hoopa to Box Camp Comment
  CAS-BOT-BC196223  Lupinus albifrons var. eminens Doris K. Kildale 1926-4-30 1929 Humboldt Fruitland Hill - Harris road divided between north & south forks of Eel River Comment
  HSC40974  Lupinus arboreus Linda M. Barker 1976-5-13 1474 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  SD81280  Lupinus arboreus Darley F. Howe 1969-5-30 4586 Humboldt 2.4 miles south of Orick on Hwy 101, fresh-water lagoon Comment
  UCSB23856  Lupinus arboreus Haller, John 1967-6-17 Humboldt At Clam Beach County Park; U.S. Highway 101, about 10 miles north of Arcata Comment
  RSA246780  Lupinus arboreus var. arboreus Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-9 35328 Humboldt Clam Beach County Park: along highway. 3 Comment
  RSA407031  Lupinus arboreus var. arboreus Bonnie C. Templeton 1964-6-13 10091 Humboldt Samoa, west of Arcata. Comment
  UC15950  Lupinus bicolor Harley P. Chandler May, 1901 1146 Humboldt Humboldt Bay; Humboldt Bay, North Coast Ranges 3 Comment
  HSC78624  Lupinus bicolor L. P. Janeway 1984-5-16 785 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd. just N of the boat ramp 3 Comment
  SEINET10484916  Lupinus bicolor subsp. pipersmithii Charles Piper Smith 1948-5-10 Smith 48251 Humboldt Highway 101 - garberville, 2 miles north. Comment
  HSC79068  Lupinus breweri D. K. Imper 1984-5-17 Humboldt Across drainage E of Sims Mtn. 1220 Comment
  CAS-BOT-BC205381  Lupinus elmeri Joseph P. Tracy 1930-7-16 8954 Humboldt South Fork Mountain; open glades along summit near Blake lookout 1737 Comment
  HSC58640  Lupinus latifolius G. L. Clifton, Griswold 1979-7-31 11636 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC70982  Lupinus latifolius subsp. viridifolius Gail Newton 1980-7-22 1663 Humboldt Near Devils Backbone 1554 Comment
  HSC99444  Lupinus latifolius var. latifolius K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 94 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1223287  Lupinus latifolius var. latifolius Joseph P. Tracy 1939-8-16 16415 Humboldt near Clear Lake; Grouse Mountain Grouse Mountain; , near Clear Lake 1524 Comment
  HSC102527  Lupinus latifolius var. viridifolius M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1514 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  SEINET12154580  Lupinus lepidus H. P. Chandler 1901-1 1498 Humboldt Klamath River 427 Comment
  UC201370  Lupinus lepidus var. sellulus Joseph P. Tracy 1918-7-5 5021 Humboldt White Thorn Valley Comment
  POM276552  Lupinus littoralis Lyman D. Benson 1928-7-10 446 Humboldt Clam Beach, Trinidad. 12 Comment
  JEPS65332  Lupinus luteolus W. L. Jepson 1902-8-3 2142 Humboldt near Capetown (Adobe Hill); near Capetown 91 Comment
  UC1197271  Lupinus nanus Joseph P. Tracy 1913-6-11 4090 Humboldt near Little Van Duzen Bridge 762 Comment
  JEPS61938  Lupinus onustus Joseph T. Gregory 1935-7-24 740 Humboldt open places at Corral Prairie; Trinity Summit, open places at Corral Prairie 1584 Comment
  UC1197251  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1907-6-25 2576 Humboldt mouth Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay region, Elk River 0 Comment
  RSA21084  Lupinus rivularis Carl B. Wolf 1937-6-19 8912 Humboldt Van Duzen River, 3/10 mi. above Bridgeville. 122 Comment
  RSA170274  Lupinus sellulus var. artulus Joseph P. Tracy 1918-7-5 5021 Humboldt White Thorn Valley. 305 Comment
  HSC57899  Lupinus tracyi Overton, Butler 1979-7-31 11479 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  UC1488744  Lupinus tracyi Marc Baker 1980-7-19 2987 Humboldt near Bret Hole 105 Comment
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Jul 7 2009
  HSC14891  Lupinus variicolor R. I. Bonn 1965-5-9 42 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC93220  Lupinus variicolor Ananda Dickie, Wendy Hooper, Rose Madrone, Kyla Waddell 1996-5-12 57 Humboldt Arcata bottoms, intersection of Janes Rd. and Jackson Ranch Rd., 200 m E of the Simpson Administration Bldg. 24 Comment
  HSC98044  Luzula comosa Cara Witte 2007-5-31 163 Humboldt Buck Flat. Intersection of National Forest 1 and 5N01. 1547 Comment
  UC183719  Luzula comosa Joseph P. Tracy 1912-6-2 3642 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  HSC61636  Luzula comosa Ruby Van Deventer 1959-6-29 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  RSA15576  Luzula comosa Carl B. Wolf 1927-8-28 1167 Humboldt 9 miles from Willow Creek, on the grade of the road to Blue Lake. Comment
  HSC90656  Luzula multiflora subsp. multiflora Gail Newton 1982-5-2 2518 Humboldt Elk River Wildlife Area Comment
  HSC56397  Luzula parviflora Griswold, Butler 1979-7-11 6967 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC74203  Luzula parviflora M. A. Baker 1980-7-19 3037 Humboldt Near Bret Hole 1814 Comment
  HSC98527  Luzula parviflora Cara Witte 2008-7-25 937 Humboldt At intersection with Forest Service Road 5N10C and Forest Service Road 5N10. 1346 Comment
  HSC102059  Luzula subcongesta M. R. Mesler, Robin Bencie, K. A. Wayman 2011-7-12 1165 Humboldt Patterson Meadows 1566 Comment
  UC1103675  Luzula subsessilis Joseph P. Tracy 1900-5-28 819 Humboldt Northern Coast Region, at Eureka 0 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
  POM319613  Lycopodiella inundata Patricia Wilder 1968-8-21 4384 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  RSA246934  Lycopodiella inundata R. F. Thorne, Percy C. Everett 1965-8-7 35192 Humboldt Big Lagoon, south end. 2 Comment
  HSC93250  Lysichiton americanus Gordon Leppig 1998-3-9 712 Humboldt Arcata, Alder Grove Pond, E side 12 Comment
  HSC15935  Lythrum hyssopifolia W. C. Vinyard, D. E. Anderson 1961-10-12 Humboldt Humboldt State College Campus. Comment
  JEPS40326  Madia elegans Joseph P. Tracy 1921-8-21 5937 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  SD88396  Madia elegans subsp. vernalis Darley F. Howe 1972-5-6 Humboldt 1.5 miles north of Phillipsville Comment
  HSC70393  Madia exigua M. A. Baker 1980-6-7 1849 Humboldt Near Ammon Creek 732 Comment
  CAS-BOT-BC344356  Madia exigua Carl B. Wolf 1937-6-19 8910 Humboldt Van Duzen River, 3/10 mi. above Bridgeville 121 Comment
  UC176479  Madia gracilis Joseph P. Tracy 1908-6 2869 Humboldt Valley of Van Duzen River; Buck Mountain 762 Comment
  UC495627 Image available Madia gracilis Joseph P. Tracy 1931-6-28 9588 Humboldt lower foothills of northwest slope of Buck Mountain Comment
  RSA167396  Madia gracilis subsp. gracilis Joseph P. Tracy 1950-7-6 19026 Humboldt Sproston's Place, 3 miles south of Burr Valley 1067 Comment
  POM362191  Madia madioides M. O'Mera 1974-7-1 541 Humboldt Kneeland, Barry Ridge, just off ridge Comment
  HSC39946  Madia sativa Linda M. Barker 1976-7-5 1636 Humboldt 3 mi. W of Arcata. Comment
  HSC40133  Madia sativa Thomas W. Nelson 1976-8-10 3167 Humboldt Beside Hwy. 101 at the turnoff to Sunnybrae Comment
  CAS-BOT-BC508511  Maianthemum dilatatum Volney Rattan 1883-6-4 s.n. Humboldt 3 miles east of Eureka Comment
  HSC59443  Maianthemum dilatatum Kenneth Clark 1979-4-21 133 Humboldt By junction of Little River Rd. and Central Ave., McKinleyville Comment
  RSA244984  Maianthemum dilatatum M. N. Gold 1966-5-15 25 Humboldt Dry Lagoon State Park, 13 miles north of Trinidad Comment
  UCSB15906  Maianthemum dilatatum Breedlove, Dennis 1962-6-8 Humboldt Along U.S. Highway 101, 8 miles north of Orick 60 Comment
  UCD139077  Maianthemum racemosum T. E. Weier 1942-5-22 s.n. Humboldt near Dyerville, Highway 101. Comment
  HSC70842  Maianthemum racemosum subsp. amplexicaule Gail Newton 1980-6-16 185 Humboldt Near Onion Mtn. 1280 Comment
  HSC37816  Maianthemum racemosum subsp. amplexicaule Eugene Andreuccetti 1964-5-2 44 Humboldt On Hwy. 299 at cross of Cedar Creek Comment
  SEINET12050378  Maianthemum racemosum subsp. amplexicaule F. H. Utech 1988-1 88 -270 Humboldt 14 mi W of Bridgeville to Carlotta on CA 36, Mile Marker 11.40, Van Duzen Co. Park (Pamplin Grove) 50 Comment
  CAS-BOT-BC512772  Maianthemum stellatum Doris K. Kildale 1926-3-26 1648 Humboldt Old Fortuna Road 15 Comment
  HSC54205  Malacothrix clevelandii Griswold, Butler 1979-7-12 7248 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC98525  Malacothrix clevelandii Cara Witte 2008-7-10 845 Humboldt National Forest 1. 2 miles north of intersection with Forest Service Road 4N09. 1267 Comment
  CAS-BOT-BC347414  Malacothrix floccifera L. R. Abrams 1916-7-11 6063 Humboldt Mouth of Grizzly Creek between Bridgeville and Fortuna on Van Duzon [Duzen] River Comment
  UC614810  Malacothrix floccifera Beryl O. Schreiber 1932-7-11 365 Humboldt road s Garberville Comment
  RSA151816  Malus fusca H. E. Parks 1939-05 s.n. Humboldt Trinidad, Spruce cove, near sea level. Comment
  UC1198762  Malus fusca Joseph P. Tracy 1926-4-11 7410 Humboldt Blue Slide Northern Coast Ranges (on Van Duzen River) 91 Comment
  UC18729  Malva nicaeensis C. C. Marshall 1888-1 Humboldt in Humboldt County Humboldt County Comment
  HSC23743  Marah oregana Tim Baroni 1971-7-6 122 Humboldt About 5 mi. S of Ferndale on the Mattole Rd. Comment
  HSC73820  Marah oregana Gail Newton 1980-6-7 135 Humboldt Near Brush Mtn. 1128 Comment
  HSC26658  Marah oregana Thomas W. Nelson 1973-5-22 920 Humboldt Growing on C.S.U.H. campus Comment
  HSC79515  Marah oregana Kenneth Clark 1980-3-1 513 Humboldt Shelter Cove, middle alluvial terrace, Dead Man's Gulch 37 Comment
  JEPS42490  Marah oregana W. L. Jepson and W. W. Mott 1903-6-23 2207 Humboldt White Thorn; s. Humboldt Co. Comment
  UCSB23847  Marah oregana Keefe, Joseph 1967-7-8 Humboldt Crannell Road, 2.0 miles east of Crannell, north of Eureka 30 Comment
  UC1197425  Medicago polymorpha Joseph P. Tracy 1932-5-1 9882 Humboldt vicinity of Garberville Northern Coast Ranges 121 Comment
  HSC14970  Medicago polymorpha J. E. Lankila 1962-5-6 16 Humboldt W bank of Eel River across from Shively, .25 mi. from Bear Creek Comment
  HSC14974  Medicago polymorpha Jack Rockwell 1962-5-12 74 Humboldt N of Bridgeville in hillside canyon 213 Comment
  HSC98040  Medicago sativa Cara Witte 2007-7-17 537 Humboldt Along National Forest 1 on Kinsey Ridge. 1 mile south of intersection with 4N06. 1234 Comment
  UC1145134  Melica aristata Joseph P. Tracy 1949-7-19 18374 Humboldt Friday Camp Grouse Mountain (Grouse Mountain) 1219 Comment
  UC1103761  Melica fugax Joseph P. Tracy 1913-6-17 4193 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  CAS-BOT-BC240328  Melica harfordii Dana York; Kim Hayler 2012-5-18 3105 Humboldt Six Rivers National Forest, near Somes Bar, 585 meters SE of the confluence of the Klamath and Salmon rivers, E and above highway 96 215 Comment
  SEINET200333 Image available Melica harfordii Joseph P. Tracy 1913-6-13 4116 Humboldt Bolander Rocky Mountain slopes; near summit of ridge between Van Duzen and Mad rivers on Dinsmore's Ranch. 1067 Comment
  UC181238  Melica harfordii Joseph P. Tracy 1913-6-13 4116 Humboldt near summit of ridge between Van Duzen River and Mad River (on Dinsmore's Ranch); Northern Coast Ranges 1066 Comment
  UCD87570  Melica harfordii H. S. Yates 1936-6-17 5721 Humboldt Near Burr Valley. 914 Comment
  CAS-BOT-BC262472  Melica subulata Joseph P. Tracy 1935-7-25 14224 Humboldt Trinity Summit. Near Corral Prairie 1584 Comment
  HSC10370  Melica subulata E. W. Styskel 1964-4-3 59 Humboldt 0.25 mi. NE of Garbervillie Airport along Sprowl Creek Rd. 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
  UC34140  Melica subulata Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5405 Humboldt Hubbard's Station; North Coast Ranges Comment
  UC526922  Melica subulata Joseph P. Tracy Jul 16 1930-Jul 19 1930 8913 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UCD88652  Melica subulata A. H. Murphy 1951-5-18 41 Humboldt K. Roscoe Ranch, Upper Mattole. Comment
  UC673064  Melilotus albus Joseph P. Tracy 1938-7-15 16081 Humboldt Van Duzen Eel River (gravel bar at mouth) 15 Comment
  HSC15005  Melilotus albus J. Sandborg, F. Sandborg 1968-7-19 53 Humboldt Bluff Creek near Notice Creek 793 Comment
  HSC79364  Melilotus indicus Kenneth Clark 1980-5-10 654 Humboldt Along coastal bluffs of Point Delgada, Shelter Cove 6 Comment
  JEPS79933  Mentha pulegium Joseph P. Tracy 1933-8-22 12985 Humboldt near Loleta; near Loleta 6 Comment
  UC1239692  Mentha pulegium Joseph P. Tracy 1916-9-5 4772 Humboldt 4 mi above mouth of South Fork of Eel River; South Fork of Eel River 60 Comment
  UC577383  Mentha pulegium Joseph P. Tracy 1933-8-22 12985 Humboldt near Loleta; near Loleta 6 Comment
  HSC70912  Mentzelia dispersa Gail Newton 1980-7-23 1740 Humboldt Near Packsaddle Ridge 1463 Comment
  UC166483  Mentzelia laevicaulis var. laevicaulis Joseph P. Tracy 1908-6 2933 Humboldt Opposite Buck Mountain; Northern Coast Ranges,Valley of Van Duzen River 762 Comment
  HSC37227  Menyanthes trifoliata Anonymous 1976-5-14 Humboldt NW of McClellan Mtn. Comment
  HSC91898  Menziesia ferruginea E. Mackey 1986-5-13 Humboldt Patrick's Point State Park, Octopus Grove Comment
  HSC7849  Menziesia ferruginea subsp. ferruginea J. C. Reppas 1963-4-20 33 Humboldt 1 mi. N of Fickle Hill Rd. Comment
  UC175183  Micropus californicus var. californicus Joseph P. Tracy 1913-6-13 4099 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  SEINET198985  Micropus californicus var. californicus S. K. Harris, JP Tracy 1942-6-15 sn Humboldt Harris Road 1 mi E of Garberville Comment
  UC1223043  Microseris laciniata subsp. laciniata Joseph P. Tracy 1947-6-8 17706 Humboldt by old Strong's District School House (5 mi e of town); Carlotta 60 Comment
  JEPS13224  Microseris laciniata subsp. leptosepala W. L. Jepson 1902-6 1942 Humboldt Redwood Creek, Green Point Ranch Comment
  SEINET11810183  Microseris laciniata subsp. leptosepala J. P. Tracy 1947-1 17828 Humboldt Horse Mountain 1128 Comment
  UC682105  Microseris laciniata subsp. leptosepala G. L. Stebbins Jr. with A. A. Beetle 1942-6-1 3276 Humboldt 1/2 mi n Weitchpec 243 Comment
  CAS-BOT-BC349237  Microseris nutans Joseph P. Tracy 1930-7-16 8900 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  HSC73727  Microseris nutans M. A. Baker 1980-7-22 3062 Humboldt Near Salmon Mtn. 1820 Comment
  HSC70251  Microsteris gracilis M. A. Baker 1980-6-8 1917 Humboldt Near Buck Flat. 1554 Comment
  HSC20679  Mimulus aurantiacus var. aurantiacus J. E. Lankila 1962-5-6 7 Humboldt W bank of Eel River across from Shively, .25 mi. from Bear Creek Comment
  HSC20685  Mimulus aurantiacus var. aurantiacus Steve Dorei 1970-10-31 132 Humboldt Scotia bluff area, N side of railroad tracks. Comment
  HSC20687  Mimulus aurantiacus var. aurantiacus R. Spellenberg 1965-6-14 1136 Humboldt Hwy. 299, 1 mi. E of Blue Lake Comment
  JEPS10232  Mimulus aurantiacus var. aurantiacus Lincoln Constance 1934-5-26 657 Humboldt s end Dyrville Bridge; South Fork Eel River, Bull Creek Region 45 Comment
  SFV15855  Mimulus aurantiacus var. aurantiacus D. M. Thompson 1992-6-6 1116 Humboldt 0.8 miles south of Highway 101 interchange access road (to Trinity Town) along road to Luffenholtz Beach. East side of road on steep bank. 50 Comment
  UC582604  Mimulus breweri Joseph P. Tracy 1932-7-10 10375 Humboldt Trinity Summit 1584 Comment
  HSC102597  Mimulus guttatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1584 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC20721  Mimulus guttatus J. F. Knezevich 1968-5-14 432 Humboldt 13 mi. S of Ferndale at Cape Mendocino 0 Comment
  HSC70515  Mimulus guttatus Gail Newton 1980-7-20 1619 Humboldt Near Bell Swamps 1426 Comment
  JEPS25699  Mimulus guttatus P. C. Hutchison 1961-5-22 2033 Humboldt 1/2 mi above Somes Bar (Hiway 299 ca. 100 ft. from Siskiyou Co. line) Comment
  UC1196811  Mimulus kelloggii Joseph P. Tracy 1908-6 2938 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  HSC75474  Mimulus moschatus J. O. Sawyer 1980-7-18 3621 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC582497  Mimulus primuloides Joseph P. Tracy 1935-7-26 14258 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  HSC82387  Mimulus primuloides var. primuloides Thomas W. Nelson 1979-7-11 5011 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC1196805  Mimulus pulsiferae Harold E. Parks and Joseph P. Tracy 1934-6-27 11087 Humboldt Grouse Mt. 1432 Comment
  UC1103542  Minuartia californica Joseph P. Tracy 1925-5-30 7033 Humboldt Larribee Valley Northern Coast Ranges 701 Comment
  UC1198336  Minuartia californica Joseph P. Tracy 1927-3-27 7859 Humboldt near the South Fork; Trinity River Valley 182 Comment
  UC275482  Minuartia cismontana Joseph P. Tracy 1925-5-30 7040 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  HSC4054  Minuartia douglasii Lincoln Constance 1934-5-29 732 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  OBI19559  Minuartia douglasii Carl B. Wolf 1937-6-14 8822 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  UCD98275  Minuartia douglasii Joseph P. Tracy 1942-6-23 17225 Humboldt Trinity Summit; one mile west of Mud Springs. Comment
  HSC4087  Minuartia nuttallii subsp. gregaria D. E. Anderson 1965-6-1 3763 Humboldt Horse Mountain, W facing slope 1220 Comment
  JEPS43508  Mitella ovalis Joseph P. Tracy 1933-5-14 12183 Humboldt Willow Creek Canyon along Trinity Highway; Willow Creek Canyon 365 Comment
  UC303176  Mitella ovalis Joseph P. Tracy 1923-4-8 6176 Humboldt Carlotta Northern Coast Ranges 60 Comment
  UC1197971  Modiola caroliniana Joseph P. Tracy 1942-5-16 17333 Humboldt Garberville 152 Comment
  CHSC63391  Moehringia macrophylla Vernon H. Oswald 1994-6-29 6361 Humboldt Titlow Hill Rd. (forest Rd.) 9.6 mi S of Hwy. 299, 4.5 mi S of 6N35, S of Willow Creek. 1572 Comment
  HSC55106  Moehringia macrophylla G. L. Clifton 1979-7-31 11846 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  JEPS79819  Moehringia macrophylla Joseph P. Tracy 1935-7-25 14225 Humboldt near Corral Prairie (Trinity Summit); , near Corral Prairie 1584 Comment
  HSC41256  Monardella odoratissima Brad Klipfel 1974-6-25 446 Humboldt Horse Mtn. Comment
  UC577400  Monardella purpurea Joseph P. Tracy 1926-6-20 7657 Humboldt Horse Mountain 1310 Comment
  OBI13608  Monardella sheltonii Carl B. Wolf 1937-8-13 9223 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New rd towards Trinity Summit Comment
  POM61350  Monardella villosa Joseph P. Tracy 1918-7-6 5042 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  RSA0022786  Monardella villosa subsp. subserrata F. W. Peirson 1926-7-13 7050 Humboldt Near Blue Lake, Mad River Comment
  UC2035936  Monardella villosa subsp. villosa C. Epling, Wm. Robison 1935-7-24 Humboldt Dyerville Comment
  UC203968  Monardella villosa subsp. villosa Joseph P. Tracy 1918-7-5 5037 Humboldt Garberville Northern Coast Ranges 121 Comment
  UC183608  Montia chamissoi Joseph P. Tracy 1913-6-17 4169 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  CAS-BOT-BC444802  Montia diffusa Don Hagar 1957-5-21 59 Humboldt Brush Mountain, 3.5 miles southwest of Willow Creek 853 Comment
  SEINET3025745  Montia linearis Joseph P. Tracy 1913-5-4 4067 Humboldt Kneeland Prairie 760 Comment
  CAS-BOT-BC445151  Montia parvifolia I. L. Wiggins 1932-7-7 5879 Humboldt Near Samoa Comment
  CAS-BOT-BC445162  Montia parvifolia Harley P. Chandler 1901-5-1 1261 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  HSC55193  Montia parvifolia G. L. Clifton, Terry Griswold 1979-8-2 12267 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA47091  Myrica californica Doris K. Kildale 1926-11-28 2866 Humboldt Patrick s Point Comment
  HSC77912  Myriophyllum spicatum Bruce Hulberg 1977-10-23 771023 .17 Humboldt Fish Lake Comment
  HSC6893  Nasturtium officinale P. W. Shields 1955-6-16 Humboldt HSU campus Comment
  HSC73502  Navarretia capillaris Gail Newton 1980-7-11 1325 Humboldt Near Red Mtn. 1341 Comment
  HSC44287  Navarretia divaricata J. P. Smith, Steve Selva 1970-6-30 4098 Humboldt Comment
  HSC39198  Nemophila menziesii var. atomaria D. E. Anderson, J. P. Smith 1971-7-6 - 1326 Humboldt 1.0 mi. W of Pine Ridge Summit, 6 mi. E of junction with Redwood Valley Rd. Comment
  HSC77393  Nemophila pedunculata L. P. Janeway 1983-4-16 234 Humboldt Near the old Hwy. 299 on W side of Berry Summit. 823 Comment
  HSC43110  Notholithocarpus densiflorus var. densiflorus Thomas W. Nelson, Jane P. Nelson 1978-2-5 3760 Humboldt Kneeland, E side of junction of Kneeland and Maple Creek roads 671 Comment
  HSC49510  Nuphar polysepala R. York 1979-4-16 263 Humboldt Along Hwy. 101 across from Clam Beach between Westhaven and McKinleyville 0 Comment
  HSC20658  Nuttallanthus texanus R. T. Forester 1963-4-30 18 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  SEINET11915945  Oemleria cerasiformis J. P. Tracy 1950-1 18618 Humboldt 2 mi W of Dinsmore's, Buck Mountain, lower foothills of its NW slope 762 Comment
  HSC38335  Oenanthe sarmentosa Peter Sorensen 1976-8-11 Humboldt King Salmon Comment
  HSC97444  Oenanthe sarmentosa Ivy Watson 2008-9-28 27 Humboldt Beach N of river mouth, along small tributary E of sand dunes 4 Comment
  UCD106955  Oenothera wolfii D. Wiesendanger; F. Randall 1926-8-1 1544 Humboldt Near Arcata. Comment
  JEPS11679  Orobanche californica subsp. californica Joseph P. Tracy 1924-8-3 6761 Humboldt Big Lagoon. Comment
  JEPS12001  Orobanche fasciculata Joseph P. Tracy 1935-7-30 14374 Humboldt Salmon Summit. Comment
  BLMAR43  Osmorhiza berteroi June, 1982 43 Humboldt King range, tolkan campground Comment
  UC642259  Osmorhiza occidentalis Joseph P. Tracy 1935-7-24 14189 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC12761  Oxalis articulata subsp. rubra M. J. Athey 1970-11-8 12 Humboldt Along Arcata blvd., in Arcata. Comment
  RSA245261  Oxalis corniculata R. A. Vanbianchi 1971-11-5 92 Humboldt Humbolt State College campus. SouthWest corner theatre arts building. Comment
  CHSC19520  Oxalis oregana R. D. Modafferi 1965-5-1 66 Humboldt 0.5 mile south of Trinidad on old highway 101. Roadside. Comment
  HSC34809  Oxalis oregana John Palmer 1975-4-9 298 Humboldt 40 yds. E of intersection of 17th at Bayview St., Arcata Comment
  HSC89720  Oxalis pes-caprae Larry Levine, Manuel Pachero, , Robert Murphey 1989-2-24 3 Humboldt HSU campus, garden plot SE of Buck House 40 Comment
  UCD111002  Oxalis pilosa R. N. Raynor 1935-1 s.n. Humboldt Humboldt County. Comment
  CHSC414  Packera bolanderi var. bolanderi M. Underhill 1952-7-12 Humboldt 121 Comment
  UC418982  Packera bolanderi var. bolanderi H. E. and S. T. Parks May 1930 747 Humboldt near Blue Slide; Middle Van Duzen River Comment
  CDA2139  Parapholis incurva Gordon Leppig, Sylvia Leppig 2000-5-29 1385 Humboldt Trinidad Harbor, Trinidad. Comment
  HSC39757  Parapholis strigosa Peter Sorensen 1976-7-11 Humboldt Woodley Island. Comment
  HSC104072  Parnassia palustris S. Carothers 2001-8-29 Humboldt Six Rivers National Forest; Lassics Botanical Area 1537 Comment
  HSC54592  Paxistima myrsinites Overton, Butler 1979-7-24 9660 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  RSA183616  Pedicularis densiflora D. E. Anderson 1965-5-1 3556 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek. Comment
  SD51262  Pedicularis densiflora Darley F. Howe 1961-8-1 3112 Humboldt 9.0 miles north of Arcata on Highway 101. 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
  CAS-BOT-BC69341  Pellaea brachyptera Joseph P. Tracy 1939-8-16 16423 Humboldt Grouse Mountain 1524 Comment
  HSC39931  Pellaea brachyptera J. O. Sawyer 1970-6-25 2294 Humboldt 1646 Comment
  HSC24382  Penstemon anguineus J. O. Sawyer 1970-6-24 2255 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC100680  Penstemon azureus Carl C. Marshall 461 Humboldt Near P. Asbills, S Humboldt. Comment
  HSC102131  Penstemon deustus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1035 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC577366  Penstemon heterophyllus var. heterophyllus Joseph P. Tracy 1933-6-25 12616 Humboldt along Eel River 2 to 5 mi e South Fork Eel River (Camp Grant); along Eel River, e of South Fork 45 Comment
  HSC41280  Penstemon laetus subsp. sagittatus Brad Klipfel 1974-6-25 441 Humboldt Horse Mtn., along ridge running to the E of Horse Mtn. proper Comment
  HSC72988  Penstemon newberryi M. A. Baker 1980-7-23 3144 Humboldt Near Orleans Mtn. 1859 Comment
  RSA21443  Penstemon newberryi subsp. berryi Carl B. Wolf 1937-8-12 9207 Humboldt North Coast Range, South Fork Mountain, 0.6 miles S of Blake Lookout. 1677 Comment
  JEPS5715  Penstemon newberryi var. berryi Chestnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  HSC37502  Pentagramma triangularis J. D. Ackerman 1974-5-25 264 Humboldt 0.25 mi. S of Lufenholtz Beach off Scenic Dr. between Moonstone and Trinidad Comment
  RSA0094699  Pentagramma triangularis Ira L. Wiggins 1957-6-21 14139 Humboldt On E side of road, 1 mi. S of Garberville. Comment
  HSC99556  Perideridia gairdneri subsp. borealis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 221 Humboldt Near North Trinity Mtn, 11. 5 mi E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  JEPS14224  Perideridia howellii Joseph P. Tracy 1930-10-26 9237 Humboldt Valley of South Yager Creek 762 Comment
  SEINET12119282  Perideridia kelloggii J. P. Tracy 1950-1 19382 Humboldt Berry's Mountain, E of Redwood Creek on Trinity Highway 549 Comment
  UC1197118  Perideridia parishii subsp. latifolia Joseph P. Tracy 1932-7-18 10707 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  CAS-BOT-BC413711  Persicaria hydropiper Henry M. Pollard 1956-10-9 s.n. Humboldt Fig Tree Riffle at Woodson Mine, Klamath River, Orleans Comment
  HSC95377  Persicaria lapathifolia Andrea Pickart 2002-8-7 193 Humboldt Arcata Marsh along I St. 20 Comment
  CAS-BOT-BC330380  Petasites frigidus var. palmatus M. S. Jussel 1931-5-2 s.n. Humboldt 20 miles N of Garberville Comment
  BLMAR530  Phacelia bolanderi Jennifer Wheeler 2009-6-23 530 Humboldt King range, On Paradise Ridge road Comment
  HSC42200  Phacelia bolanderi Ed Cope 1977-4-23 22 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UCR15551  Phacelia bolanderi George K. Helmkamp 1978-7-15 s.n. Humboldt Prairie Creek Redwoods State Park 305 Comment
  UC562573  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1926-6-20 7661 Humboldt lower slopes Horse Mt. 914 Comment
  UCD120520  Phacelia heterophylla subsp. virgata Alice Eastwood; John Thomas Howell 1937-6-23 4757 Humboldt Dinsmore's. Comment
  HSC56933  Phacelia mutabilis G. L. Clifton, Butler 1979-7-26 9369 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC74412  Phacelia mutabilis Gail Newton 1980-8-10 2030 Humboldt Near Blake Mtn. 1707 Comment
  POM259083  Phalaris aquatica J. T. Howell 1937-7-31 13721 Humboldt 4 miles north of Loleta Comment
  CAS-BOT-BC258965  Phalaris californica Joseph P. Tracy 1925-6-7 7085 Humboldt Lord-Ellis Road, on Bald Mt. 609 Comment
  RSA167286  Phalaris californica Joseph P. Tracy 1951-6-26 19599 Humboldt on Butter Valley Road, about 2 miles east of junction of Kneeland Prairie Road Comment
  UC526833  Phalaris californica Joseph P. Tracy 1925-6-7 7085 Humboldt Lord-Ellis Road Bald Mt.; North Coast Ranges, Bald Mt. 609 Comment
  UCD88768  Phalaris californica Joseph P. Tracy 1951-6-26 19599 Humboldt Butter Valley Road, about 2 miles E of junction of Kneeland Prairie Road. Comment
  UC154110  Philadelphus lewisii Joseph P. Tracy 1908-6 2886 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  RSA0046048  Philadelphus lewisii Marcus E. Jones 1931-7-16 s.n. Humboldt Junction, East of Arcata. Comment
  HSC58414  Phleum alpinum Griswold, Butler 1979-7-12 7215 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC1103789  Phleum alpinum Joseph P. Tracy 1919-9-24 5293 1/2 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1889 Comment
  UCD89321  Phleum alpinum A. H. Murphy 1951-6-25 66 Humboldt Snow Camp Meadow, 8 miles e.n.e. Kneeland. 1402 Comment
  CAS-BOT-BC250884  Phleum pratense Henry M. Pollard 1948-7-17 s.n. Humboldt Orleans Comment
  UC572265  Phlox adsurgens H. S. Yates 1936-6-22 5849 Humboldt 4 mi ne Bald Mountain; China Flat Quad. Comment
  CAS-BOT-BC452021  Phyllospadix torreyi W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  HSC93254  Picea sitchensis Gordon Leppig 1998-3-15 719 Humboldt Quarry Rd. off Jacoby Creek 98 Comment
  SD51259  Picea sitchensis Darley F. Howe 1961-8-1 Humboldt 3 miles north of Arcata on Highway #101 Comment
  UC55646  Picea sitchensis J. Burtt Davy 1899-7-30 6186 Humboldt in gulches in back Ferndale; North Coast Ranges Comment
  CAS-BOT-BC78289  Pinus attenuata A. A. Heller 1917-7-7 12811 Humboldt Alder Springs grade below Rattlesnake [spring] Spring Comment
  CAS-BOT-BC78376  Pinus contorta H. E. Parks; S. T. Parks 1938-3-1 24125 Humboldt Spruce Cove, Trinidad 60 Comment
  HSC1487  Pinus contorta J. W. Johnson 1962-4-29 1294 Humboldt Ridge 8, Lanphere Farm, Samoa Peninsula Comment
  OBI33911  Pinus jeffreyi David J. Keil 1983-7-2 17315 Humboldt Ca. 4 mi SE of SR 299 along Titlow HIll rd below Horse Mtn Summit Rd Comment
  HSC74337  Pinus lambertiana M. A. Baker 1980-5-18 1280 Humboldt Near Black Mtn. 1006 Comment
  HSC55145  Pinus monticola G. L. Clifton, Griswold 1979-8-1 12046 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC42411  Pinus muricata Robert M. Specht 1977-11-20 1190 Humboldt Near Hwy. 101, on flats along Georgia Pacific's A-line rd. , Bulk Collection # 117 122 Comment
  UC552843  Plagiobothrys hispidulus Joseph P. Tracy 1935-7-25 14226 Humboldt wet meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC23128  Plagiobothrys nothofulvus Norman Dennis 1965-6-11 114 Humboldt 1/4 mi. S and 1 mi. E of the junction of Barry Ridge Rd. and the Eureka-Bridgeville county road, along Ashfield Ridge Rd. About 5 mi. SE of Kneeland 793 Comment
  UC1239622  Plagiobothrys nothofulvus Joseph P. Tracy 1937-5-16 15284 Humboldt summit ridge (Harris); Harris 914 Comment
  RSA80192  Plagiobothrys reticulatus Alice Eastwood, J. T. Howell 1937-6-23 4811 Humboldt Little Van Duzen River. Comment
  UC1222212  Plagiobothrys reticulatus Joseph P. Tracy 1951-6-24 19536 Humboldt Kneeland Prairie 762 Comment
  UC1239609  Plagiobothrys reticulatus Joseph P. Tracy 1936-6-9 14884 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC1541669  Plagiobothrys reticulatus H. E. and S. T. Parks July 1937 24042 Humboldt Trinidad, Spruce Cove Comment
  UC582613  Plagiobothrys reticulatus Joseph P. Tracy 1937-6-20 15351 Humboldt ten mi up stream from the mouth Bear River 152 Comment
  JEPS60989  Plagiobothrys reticulatus var. reticulatus Jos. P. Tracy 1909-7-4 3009 Humboldt Eureka Comment
  UC1222198  Plagiobothrys scouleri Joseph P. Tracy 1948-8-7 18084 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC1180486  Plagiobothrys tenellus Robert Ornduff 1960-6-1 6179 Humboldt meadow on high ridge about 3 mi e Garberville (on road to Alder Point) Comment
  JEPS6423  Plantago erecta Joseph P. Tracy 1932-5-10 9945 Humboldt near Petrolia; Northern Coast Ranges, Mattole Valley 60 Comment
  UC1196145  Plantago erecta Joseph P. Tracy 1946-6-2 17553 Humboldt near Samoa; Humboldt Bay 6 Comment
  UCR37555  Plantago erecta L. P. Janeway 1983-5-1 257 Humboldt Northern Coast, North Spit (Samoa Peninsula). Sand dunes west of Samoa Rd and north of Coast Guard Station 6 Comment
  UC198604  Plantago erecta Joseph P. Tracy 1917-5-30 4793 Humboldt mouth of Little River North Coast Ranges, Little River 6 Comment
  HSC59583  Plantago lanceolata Rick Lundquist 1979-4-24 35 Humboldt SE corner 7th and Union St., Arcata 24 Comment
  HSC62906  Plantago maritima J. M. DiTomaso 1979-5-20 1057 Humboldt Above College Cove at Elks Head, 1 mi. N of Trinidad. Comment
  SJSU11079  Plantago maritima H. T. Harvey 1977-7-6 608 Humboldt S Spit, Humboldt Bay Comment
  HSC67513  Plantago maritima J. P. Smith 1976-7-3 8933 Humboldt Just N of Samoa Bridge Comment
  UC162682  Plantago maritima var. juncoides Joseph P. Tracy 1911-6-25 3254 Humboldt Bucksport Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC48688  Platanthera dilatata var. leucostachys Brad Klipfel 1973-7-31 255 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC54529  Platanthera sparsiflora Overton, Butler 1979-7-23 9471 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  UC666988  Platanthera sparsiflora Joseph P. Tracy 1930-7-17 8990 Humboldt McKay Camp South Fork Mountain 1676 Comment
  CAS-BOT-BC91631  Platystemon californicus Alice Eastwood s.n. Humboldt Samoa. Comment
  HSC16798  Platystemon californicus J. R. Woodside 1963-4-3 34 Humboldt 1.25 mi. N of Fairhaven. Comment
  HSC1976  Platystemon californicus D. E. Anderson, N. Dennis 1965-6-8 107 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  UC146095  Platystemon californicus Joseph P. Tracy 1908-6-9 2656 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1196294  Platystemon californicus Joseph P. Tracy 1944-5-14 17466 Humboldt at Bucksport Bucksport (near Eureka); near bay shore at Bucksport (near Eureka) 6 Comment
  UC146097  Platystemon californicus Joseph P. Tracy 1904-5-1 2047 Humboldt Bucksport; Northern Coast Region, Region about Humboldt Bay 0 Comment
  UC999830  Plectritis brachystemon S. C. Dyal 1938-6-10 739 Humboldt near Capetown Comment
  UC999834  Plectritis congesta S. C. Dyal 1938-6-11 719 b Humboldt 10 mi w of Dinsmore (on McClellan Mountain); McClellan Mountain Comment
  HSC21691  Plectritis congesta subsp. brachystemon Jack Rockwell 1962-5-4 51 Humboldt E of road along stream bank. 549 Comment
  RSA178587  Plectritis congesta var. congesta Joseph P. Tracy 1950-5-6 18639 Humboldt At my cabin. Trinity River Valley, at Willow Creek. Comment
  HSC70751  Pleuricospora fimbriolata R. York 1980-5-17 532 Humboldt Near Le Perron Peak 1066 Comment
  CAS-BOT-BC458164  Pleuricospora fimbriolata Doris K. Kildale 1927-8-7 3858 Humboldt Lawrence Creek 609 Comment
  UC1103803  Pleuropogon refractus Joseph P. Tracy 1926-5-22 7514 Humboldt Prairie Creek; Northern Coast Ranges, Prairie Creek 152 Comment
  SEINET200752  Pneumonanthe oregana J. P. Tracy 1904-8-7 2140 Humboldt Immediate vicinity of Eureka. 0 Comment
  HSC26347  Poa annua T. O. Osborne 1970-4-5 78 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  UC1145120  Poa bolanderi Joseph P. Tracy 1937-7-29 15581 Humboldt near McKay camp South Fork Mt 1676 Comment
  HSC10662  Poa bulbosa D. E. Anderson 1963-5-18 2446 Humboldt 1.4 mi. W of Berry Summit. Comment
  UC569487  Poa douglasii H. S. Yates 1936-6-18 5726 Humboldt near mouth Little River; Eureka Quadrangle 4 Comment
  UC70825  Poa douglasii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6181 Humboldt Ferndale Comment
  HSC38923  Poa macrantha Linda M. Barker 1976-5-13 1491 Humboldt 3 mi. W of Arcata. Comment
  RSA10134  Poa macrantha Joseph P. Tracy 1933-5-20 12224 Humboldt Cape Mendocino, near ocean shore, south point of the Cape. 3 Comment
  RSA54930  Poa macrantha W. A. Silveus 1938-7-10 6912 Humboldt North of Eureka Comment
  HSC10758  Poa pratensis E. W. Styskel 1964-4-26 72 Humboldt End of Davis St. at edge of Eel River in Rio Dell. Comment
  UC552763  Poa pratensis subsp. pratensis Joseph P. Tracy 1935-6-23 13987 Humboldt French Camp Ridge 1066 Comment
  RSA63625  Poa secunda Milo S. Baker s.n. Humboldt Near Yager Comment
  HSC70687  Poa secunda subsp. secunda Gail Newton 1980-7-13 1572 Humboldt Near Sims Mountain. 1311 Comment
  UC1103170  Poa secunda subsp. secunda J. P. Tracy 1903-5-23 1896 Humboldt on Eel River Alder Point 152 Comment
  HSC70762  Poa trivialis R. York 1980-5-17 520 Humboldt Near Le Perron Peak 792 Comment
  UC1145117  Poa trivialis Joseph P. Tracy 1937-6-6 15330 Humboldt Ferndale 15 Comment
  UC589885  Poa trivialis H. S. Yates 1936-6-16 5682 Humboldt near Bayside; Eureka Quad. 9 Comment
  UCD92116  Poa trivialis Collector Unknown 1949-6-1 s.n. Humboldt Miranda. Comment
  CAS-BOT-BC244205  Poa unilateralis Joseph P. Tracy 1927-6-8 8113 Humboldt Trinidad. Bluffs facing ocean Comment
  CAS-BOT-BC244297  Podagrostis humilis Joseph P. Tracy 1935-7-27 14281 Humboldt Trinity Summit. Corral Prairie 1584 Comment
  HSC44772  Polygala californica Thomas W. Nelson, Jane P. Nelson 1977-7-4 3585 Humboldt W side of road N from Alder Springs 1494 Comment
  HSC64167  Polygala cornuta J. O. Sawyer, K. A. Sawyer 1979-6-24 3411 Humboldt Slopes alongside Aikens Creek. 366 Comment
  CAS-BOT-BC167572  Polygala cornuta var. cornuta Henry M. Pollard 1946-8-11 s.n. Humboldt Perch Creek, Orleans region Comment
  HSC17470  Polygonum aviculare P. W. Shields 1955-6-18 Humboldt HSC Campus Comment
  HSC17474  Polygonum aviculare C. B. Wolf 1927-8-29 1208 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  UC672973  Polygonum aviculare subsp. depressum Joseph P. Tracy 1940-10-18 16778 Humboldt Trinidad 9 Comment
  RSA12549  Polygonum bistortoides Carl B. Wolf 1934-7-2 5889 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  HSC100602  Polygonum convolvulus Carl C. Marshall Sep 1886 246 Humboldt Fields near Arcata. Comment
  HSC54692  Polygonum douglasii Overton, Butler 1979-7-26 9989 Humboldt Near Willow Creek 1341 Comment
  HSC55160  Polygonum douglasii Gilbert Muth 1979-8-1 12122 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC56170  Polygonum douglasii G. L. Clifton, Griswold 1979-8-1 12063 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC101995  Polygonum douglasii var. douglasii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 894 Humboldt Patterson Meadows 1566 Comment
  HSC98067  Polygonum douglasii var. douglasii Cara Witte 2007-7-11 508 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  CAS-BOT-BC109178  Polygonum paronychia Doris K. Kildale 1926-6-18 2398 Humboldt Gold Bluffs. Comment
  HSC49614  Polygonum paronychia R. York 1979-5-18 296 Humboldt Stabilized dunes opposite the Louisiana Pacific mill in Samoa Comment
  POM319269  Polygonum paronychia Patricia Wilder 1968-8-21 4416 b Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  CAS-BOT-BC419956  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1933-7-25 12868 Humboldt Grouse Mountain 1524 Comment
  HSC55283  Polygonum polygaloides subsp. kelloggii Overton, Butler 1979-8-2 12711 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC205474  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1919-9-22 5269 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  CAS-BOT-BC71831  Polypodium californicum Ira L. Wiggins 1957-6-21 14141 Humboldt E side of road, 1 mi. S of Garberville Comment
  HSC1102  Polypodium californicum Francis Winter 1960-4-24 Humboldt 1.0 mi. N of Redwood Creek Ranch 396 Comment
  HSC34520  Polypodium californicum Thomas W. Nelson, J. D. Ackerman 1974-5-25 260 Humboldt S Trinidad Beach, S of Trinidad Head and Trinidad Comment
  UC275412  Polypodium glycyrrhiza Joseph P. Tracy 1925-11-25 7326 Humboldt near the S Fork Trinity River Valley; Northern Coast Ranges 182 Comment
  UCSB51220  Polypodium scouleri Almanza, Ed 1976-7-15 Humboldt Cemetary road, east of Hwy. 101, Trinidad 15 Comment
  CAS-BOT-BC232957  Polypogon australis Peter Rubtzoff 1968-9-4 5959 Humboldt Goulds Bar, S Fork Eel River SE of Weott Comment
  RSA129382  Polypogon interruptus H. S. Yates 1936-6-16 5678 Humboldt 1 mile NE of Samoa 3 Comment
  JEPS72929  Polypogon monspeliensis Lincoln Constance 1934-5-26 672 Humboldt sand and gravel bar of South Fork of Eel River s end Dyerville Bridge (Bull Creek Region); South Fork Eel River, Bull Creek Region 45 Comment
  UC906712  Polystichum Harold E. Parks and Joseph P. Tracy 1942-5-16 11547 Humboldt half way between Miranda and Garberville 152 Comment
  HSC1156  Polystichum imbricans D. E. Anderson 1963-9-21 2832 Humboldt 0.5 mi. E of Willow Creek Comment
  UCD39987  Polystichum imbricans subsp. curtum Rodney Gale Myatt 1971-9-22 1198 B Humboldt Along Salmon River, southeast of Somes Bar, and northeast of Hoopa Reservation. 426 Comment
  HSC98978  Polystichum imbricans subsp. imbricans Cara Witte 2007-5-23 96 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 0.5 mi. south of intersection with 5N04 and 4N32E. 1402 Comment
  HSC99526  Polystichum lonchitis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 190 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1372 Comment
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May 14 2014
  RSA693276  Polystichum lonchitis Anstruther Davidson 1923-8-10 17060 Humboldt Near Bridgeville Comment
  HSC41301  Polystichum munitum Brad Klipfel 1974-7-27 500 Humboldt Horse Mtn. Comment
  HSC54599  Polystichum munitum Overton, Butler 1979-7-24 9679 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC54652  Polystichum munitum Overton, Butler 1979-7-25 9860 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC99514  Polystichum munitum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 177 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SBBG296  Polystichum munitum H. and M. Dearing 1939-5-27 3454 Humboldt Bishop Pine Lodge, Patricks Pt Comment
  HSC79181  Polystichum munitum C. J. Thomas 1984-9-25 116 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  HSC95887  Polystichum munitum Will Ferrand 2002-4-20 26 Humboldt 9 mi. E of int. of West End Rd. and Warren Cr. Rd. 67 Comment
  HSC98643  Polystichum munitum Cara Witte 2008-7-10 864 Humboldt Forest Service Road 4N06. 2 miles west of National Forest 1. 1195 Comment
  SEINET10793992  Polystichum munitum J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13008 Humboldt Leggett; Redwoods River Resort, 75000 Highway 101. Comment
  UC249849  Polystichum munitum Joseph P. Tracy 1924-8-24 6828 Humboldt E Fork Willow Creek; Northern Coast Ranges 457 Comment
  CAS-BOT-BC102908  Populus trichocarpa Doris K. Kildale; L. B. Kildale 1930-4-13 9571 Humboldt Bridgeville 289 Comment
  UC176664  Populus trichocarpa Joseph P. Tracy 1913-6-22 4261 B Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  JEPS395  Potamogeton foliosus Joseph P. Tracy 1934-8-14 13588 Humboldt South Fork of Eel River (midway between Miranda and Garberville) 91 Comment
  UC672878  Potamogeton foliosus H. E. Parks and Joseph P. Tracy 1933-6-11 12548 Humboldt near Miranda 91 Comment
  HSC17758  Potamogeton nodosus R. L. Jarvis 1962-4-29 35 Humboldt Turner draw, 3 mi. N of Arcata on Hwy. 101 15 Comment
  UC195349  Potamogeton pectinatus Joseph P. Tracy 1916-6-19 4718 Humboldt Dobbyn Creek; Northern Coast Ranges 182 Comment
  CAS-BOT-BC143074  Potentilla anserina subsp. pacifica Joseph P. Tracy 1934-7-30 13509 Humboldt Dry Lagoon (Along coast in front of South End of Stone Lagoon) 3 Comment
  CDA26070  Potentilla anserina subsp. pacifica B. F. Kemp 1958-5-14 Humboldt Ferndale. 0 Comment
  HSC18724  Potentilla anserina subsp. pacifica S. J. Hawks 1965-5-14 66 Humboldt 2 mi. NW of McKinleyville Comment
  UC1191497  Potentilla anserina subsp. pacifica Malcolm A. Nobs, S. Galen Smith 1949-8-3 1161 Humboldt 1 mi s Fields Landing; Eel River Valley, s of Fields Landing Comment
  HSC102125  Potentilla drummondii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1029 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC1586954  Potentilla drummondii Juha Pykala and D. H. Norris 1987-6-11 1593 Humboldt s North Trinity Mountain (w of Crogan Hole); North Trinity Mountain Wilderness Area 1550 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
  HSC75470  Potentilla gracilis var. fastigiata J. O. Sawyer 1980-7-18 3617 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC158496  Potentilla gracilis var. gracilis Doris K. Kildale 1926-6-27 2210 Humboldt Laribee Valley 701 Comment
  UC418977  Potentilla gracilis var. gracilis H. E. Parks June, 1924 Humboldt Kneeland; Bald Hills, Kneeland Comment
  UC1198695  Potentilla palustris Joseph P. Tracy 1912-10-20 3991 Humboldt borders Loleta Pond (s of Eureka); Northern Coast Ranges, Loleta Pond 15 Comment
  CAS-BOT-BC517511  Prosartes smithii Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  SEINET12050892  Prosartes smithii F. H. Utech 1977-1 77 -370 Humboldt ca 4.5 mi S of Del Norte County line on US 101 enroute to Crescent City Comment
  HSC328  Prunella vulgaris J. Wendell Howe Humboldt Y Camp, Redway, Rocky Beach Comment
  JEPS62488  Prunella vulgaris var. lanceolata Joseph P. Tracy 1940-9-26 16729 Humboldt Eureka 6 Comment
  UC162689  Prunella vulgaris var. lanceolata Joseph P. Tracy 1911-7-7 3380 Humboldt three mi nw junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges, nw jct Willow Cr with Trinity River 914 Comment
  UC418989  Prunella vulgaris var. lanceolata H. E. Parks and J. P. Tracy 1930-9-14 770 Humboldt above Bayside Comment
  UC1321005  Prunella vulgaris var. vulgaris Andrew P. Nelson 1960-1 629 -2 Humboldt Comment
  CAS-BOT-BC159982  Prunus emarginata Doris K. Kildale 1926-9-5 2620 Humboldt Lasseck's Peaks - on trail to Red Peak 1661 Comment
  HSC57014  Prunus emarginata Overton, Butler 1979-7-24 9614 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  JEPS44946  Prunus emarginata Joseph P. Tracy 1924-4-20 6638 Humboldt near Fortuna (Northern Coast Ranges); Northern Coast Ranges 60 Comment
  UC1198770  Prunus emarginata Joseph P. Tracy 1920-4-18 5314 Humboldt around Humboldt Bay (Mad River, near bridge on Trinidad Road); Northern Coast Region, Mad River 15 Comment
  UC492201  Prunus emarginata Joseph P. Tracy 1932-7-13 10527 Humboldt at Corral Prairie, Trintiy Summit, Klamath Mountains Corral Prairie; Klamath Mountains, Trintiy Summit 1524 Comment
  HSC94127  Prunus laurocerasus Gordon Leppig 2000-4-12 1291 Humboldt Arcata: behind Humboldt State University, W of Fern Lake 49 Comment
  CAS-BOT-BC154739  Prunus virginiana var. demissa Doris K. Kildale 1926-5-20 3240 Humboldt Bug Creek 792 Comment
  UC492199  Prunus virginiana var. demissa Joseph P. Tracy 1928-8-5 8493 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  SD39794  Pseudognaphalium stramineum Edith A. Purer 1932-7-27 4128 Humboldt Samoa Comment
  CAS-BOT-BC357605  Pseudognaphalium stramineum L. R. Abrams 1922-6-25 8223 Humboldt 6 mi north of Garberville Comment
  UC164843  Pseudognaphalium stramineum Joseph P. Tracy 1911-7-5 3306 Humboldt along, near its mouth Willow Creek (tributary of Trinity River); Northern Coast Ranges, Trinity River, Willow Creek 182 Comment
  UC1223108  Pseudognaphalium thermale Joseph P. Tracy 1942-8-30 17303 Humboldt at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  BLMAR148  Pseudotsuga menziesii Donald Hazlett 1994-6-9 148 Humboldt King range, E-facing slope off hourse mountain ridge 609 Comment
  UC484076  Pseudotsuga menziesii Carl B. Wolf 1930-10-29 1785 Humboldt Old Coast Road 7 mi s Honeydew P.O. 304 Comment
  HSC44052  Pseudotsuga menziesii var. menziesii Thomas W. Nelson, Jane P. Nelson 1977-4-23 3345 Humboldt Tributary to Blanket Creek 1463 Comment
  HSC54561  Pseudotsuga menziesii var. menziesii Overton, Butler 1979-7-24 9576 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  OBI36577  Pseudotsuga menziesii var. menziesii David J. Keil 1983-7-1 17264 Humboldt Ca. 8 mi W of jctn US101 along Bull Crk Flats rd Comment
  JEPS40511  Psilocarphus tenellus W. L. Jepson 1934-5-7 16706 Humboldt Bull Creek Buckeye Prairie, Bull Creek Comment
  UC1222912  Psilocarphus tenellus Joseph P. Tracy 1942-7-26 17293 Humboldt 1.0 mi n Redwood House (at an old millsite); Valley of South Yager Creek 609 Comment
  SEINET4207976  Psoralea physodes Thomas Nelson, Jane Nelson 1977-7-1 3573 Humboldt Growing on dry road cut along road 2S08 below Goat Hill.; 0 1524 Comment
  HSC99408  Pteridium aquilinum var. pubescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 57 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC314641  Pterospora andromedea Joseph P. Tracy 1926-6-27 7673 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  UC1222154  Pterospora andromedea Joseph P. Tracy 1950-8-8 19274 Humboldt 3 mi e Box Camp; Trinity Summit Comment
  SEINET199671  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-4-28 8549 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  UC642278  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-6-3 8600 Humboldt Trinity Rivery Valley, at Willow Creek 152 Comment
  UCD92960  Puccinellia pumila Joseph P. Tracy 1938-7-15 16073 Humboldt Mouth of Eel River. Comment
  CAS-BOT-BC460599  Pyrola aphylla Doris Kildale Gillespie 1931-6-7 10645 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  JEPS58839  Pyrola aphylla Milo S. Baker 1923-7-31 168 Humboldt Booth's Run, North Coast Comment
  RSA47165  Pyrola asarifolia subsp. bracteata Doris K. Kildale 1927-7-10 3730 Humboldt Gans Prairie, Bald Mountain Comment
  HSC72629  Pyrola dentata J. P. Smith 1977-7-3 9254 Humboldt Six Rivers National Forest, along FS Rd. 11N17, above Blue Lake 762 Comment
  UC153965  Pyrola picta Joseph P. Tracy 1909-7-31 3047 Humboldt Kneeland Prairie 762 Comment
  UC32690  Pyrola picta Chestnut and Drew 1888-7-21 Humboldt South Fork Mts. Comment
  CAS-BOT-BC62626  Quercus chrysolepis Doris K. Kildale 1928-4-29 5970 Humboldt Horse Mt. Comment
  HSC54661  Quercus chrysolepis Overton, Butler 1979-7-25 9887 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC99510  Quercus chrysolepis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 172 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
  UC1196530  Quercus chrysolepis Joseph P. Tracy 1935-7-14 14066 Humboldt ridge back of Clear Lake; North Coast Ranges, Grouse Mountain 1524 Comment
  SEINET10970825  Quercus chrysolepis Jones 1985-6-6 Jones 112 Humboldt T34n,r4e,sec.14. Titlow rd. Ca 8 miles s off hwy. Pinus, arbutus, querus Chrysolepis, quercus vaccinifolia habitat 1143 Comment
  HSC53996  Quercus garryana Griswold, Butler 1979-7-11 7083 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  HSC8236  Quercus garryana D. E. Anderson 1961-9-3 1778 Humboldt Comment
  CAS-BOT-BC105169  Quercus kelloggii Doris K. Kildale 1930-4-13 9579 Humboldt Bridgeville 289 Comment
  HSC98688  Quercus kelloggii Cara Witte 2008-10-18 1060 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N36. 1248 Comment
  HSC72800  Quercus sadleriana Gail Newton 1980-6-17 219 Humboldt Near Onion Mtn. 1341 Comment
  HSC72804  Quercus vacciniifolia M. A. Baker 1980-6-16 1939 Humboldt Near Monks Camp. 1097 Comment
  CAS-BOT-BC104534  Quercus vacciniifolia N. Wynne; M. Peckham; J. Bamesberger 1994-5-6 43 Humboldt on W side of SRF Rd. 6N36, one mile N of intersection with Titlow Rd. Comment
  SEINET200362  Ranunculus J. P. Tracy 1921-7-31 5861 Humboldt Fortuna 30 Comment
  UC1196276  Ranunculus bulbosus J. P. Tracy 1899-5-1 297 Humboldt 6th and G streets Immediate vicinity of Eureka (in gulch) 0 Comment
  CAS-BOT-BC378853  Ranunculus californicus var. californicus Doris K. Kildale 1926-3-21 1585 Humboldt Kneeland Prairie 488 Comment
  HSC73243  Ranunculus occidentalis M. A. Baker 1980-5-18 1340 Humboldt Near Black Mtn. 792 Comment
  UC162860  Ranunculus occidentalis J. P. Tracy 1900-5-30 826 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC71029  Ranunculus occidentalis Thomas W. Nelson 1977-4-20 3321 Humboldt Along FS 1N15 between Hwy. 36 and summit 915 Comment
  UC1196224  Ranunculus occidentalis Joseph P. Tracy 1920-5-18 5327 Humboldt 5 mi above Dyerville; Northern Coast Ranges, South Fork Eel River, Forest Lodge 60 Comment
  UC1537332  Ranunculus occidentalis Gordon H. True Jr. 1936-5-11 466 Humboldt 12 mi w Miranda (e slope of ridge); Elk Ridge 457 Comment
  HSC32314  Ranunculus occidentalis var. occidentalis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5658 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  UC1196247  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1911-6-30 3273 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1196256  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1912-6-2 3641 Humboldt Eureka Northern Coast Region 0 Comment
  UC162864  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1909-5-31 2982 Humboldt Eureka Comment
  HSC18220  Ranunculus orthorhynchus var. platyphyllus Jack Rockwell 1962-5-4 53 Humboldt Along Ellison Creek near rd. 457 Comment
  HSC32043  Ranunculus parviflorus J. D. Ackerman 1974-6-12 317 Humboldt 1 mi. N of Manila between Mad River Slough and sand dunes Comment
  UC1103008  Ranunculus pusillus Joseph P. Tracy 1931-5-17 9424 Humboldt opposite mouth of Willow Creek; Northern Coast Ranges, Trinity River Valley, Lack Pond 152 Comment
  UC160952  Ranunculus repens Joseph P. Tracy 1910-6-5 3150 Humboldt region about Humboldt Bay Northern Coast Region (marshes) 0 Comment
  UCD97080  Ranunculus repens Linda M. Barker 1976-6-1 1555 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CHSC68500  Ranunculus repens var. repens Vernon H. Oswald 1997-4-10 8316 Humboldt Clam Beach between Arcata and Trinidad. On the bank of a creek on the back beach. 30 Comment
  HSC34802  Raphanus sativus Scott M. Kruse 1975-4-9 3 Humboldt Old Arcata Rd. and Chester Way, Arcata 3 Comment
  RSA8097  Rhamnus californica Carl B. Wolf 1927-8-30 1226 Humboldt 2 miles S of Petrolia on the Matole River near point where the road crosses the river. Comment
  UC1197992  Rhamnus californica Joseph P. Tracy 1934-8-4 13556 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC535751  Rhamnus californica Eleanor Armstrong 1934-8-24 1142 Humboldt Richardson Grove 121 Comment
  JEPS42009  Rhamnus californica subsp. californica W. L. Jepson 1903-6-19 2206 Humboldt Briceland, s Humboldt County Briceland Comment
  UC165816  Rhamnus californica subsp. californica Joseph P. Tracy 1909-7-31 3037 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  POM126158  Rhamnus californica subsp. occidentalis Joseph P. Tracy 1921-10-2 5963 Humboldt Kneeland Prairie. Comment
  POM257952  Rhamnus purshiana H. E. Parks, S. T. Parks 1935-05 5541 Humboldt Spruce Cove, Trinidad. 64 Comment
  UC165824  Rhamnus purshiana Joseph P. Tracy 1908-6 2848 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC7832  Rhododendron columbianum D. E. Anderson 1961-9-13 1804 Humboldt Big Lagoon County Park Comment
  CAS-BOT-BC56615  Rhododendron macrophyllum Clarence R. Quick 1959-7-24 59 -24 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  UC1193361  Rhododendron macrophyllum R. H. Neuns 1950-10-10 137 Humboldt 2 mi ne of Thorne (Quadrangle 29C3) 335 Comment
  JEPS58767  Rhododendron occidentale Joseph P. Tracy 1926-6-27 7663 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1463 Comment
  UC275301  Rhododendron occidentale R. M. Holman 1925-7-23 Humboldt Big Lagoon Comment
  RSA46883  Rhododendron occidentale var. paludosum Doris K. Kildale 1926-1-3 1485 Humboldt Big Lagoon. Comment
  HSC103230  Ribes binominatum Jade Paget-Seekins 2010-6-23 27 Humboldt Horse Mountain. Slightly less than 10 miles up Titlow Hill Road, on Forest Route 1. Near 'Road Narrows' sign. 1558 Comment
  HSC100491  Ribes divaricatum Carl C. Marshall Apr 1886 171 Humboldt Vicinity of Humboldt Bay. Comment
  CAS-BOT-BC108909  Ribes divaricatum var. pubiflorum Doris K. Kildale 1926-3-25 1619 Humboldt Liscom Hill. Lower Mad River. 30 Comment
  HSC103224  Ribes inerme var. klamathense Jade Paget-Seekins 2010-5-20 16 Humboldt Off Forest Route 16 (between Big Bar and Hayfork) , approx. 0.6 miles up the 4N29. 1028 Comment
  POM237433  Ribes laxiflorum S. T. Parks 1937-6-4 24004 Humboldt Along Prairie Creek at Valley Green Comment
  CAS-BOT-BC173368  Ribes lobbii J. H. Thomas 1949-6-13 912 Humboldt Along trail between Le Perron Flat and Whiteys Peak. Six Rivers National Forest. (East of town of Orleans) 1371 Comment
  SEINET3119071 Image available Ribes marshallii Unknown 1932-7-15 s.n. Humboldt Trinity Summit, Ridges East of Corral Prairie 1829 Comment
  CAS-BOT-BC206034  Ribes menziesii Alice Eastwood 1907-4-21 13 Humboldt Port Trinidad Comment
  JEPS49222  Ribes menziesii Jos. P. Tracy 1909-2-14 2941 Humboldt Eureka 0 Comment
  HSC102620  Ribes nevadense M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1607 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  CAS-BOT-BC212653  Ribes nevadense W. R. Dudley 1901-8-25 s.n. Humboldt Near the 14 mile post, Salmon Creek, Salmon Mountains Comment
  UC667069  Ribes roezlii Joseph P. Tracy 1933-3-5 10916 Humboldt Alton North Coast Ranges, Van Duzen River 30 Comment
  RSA0024753  Ribes roezlii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5594 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  BLMAR391  Ribes roezlii var. cruentum Jennifer Wheeler 2005-4-22 391 Humboldt Lacks Creek, Near road just befor 100 acre field 853 Comment
  UC667062  Ribes roezlii var. cruentum Joseph P. Tracy 1933-7-11 12695 Humboldt Grouse Mountain 1524 Comment
  RSA0024587  Ribes roezlii var. cruentum Lyman Benson 1929-7-19 1872 Humboldt Ridge between Bull Creek and Matole [Mattole] River. Comment
  HSC20345  Ribes sanguineum Frances Oldridge 1946-1 Humboldt Eureka Comment
  UC1198915 Image available Ribes sanguineum Joseph P. Tracy 1933-8-30 13059 Humboldt near Rnager's Lookout; Grouse Mountain 1615 Comment
  RSA0019528  Ribes sanguineum Peter H. Raven, Richard Snow 1958-7-20 13644 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge. Comment
  HSC18478  Ribes sanguineum var. glutinosum Jana Kattenhorn 1971-2-22 189 Humboldt HSC campus, E side of one way rd. between Jolly Giant Complex and campus Comment
  HSC48065  Ribes sanguineum var. glutinosum Thomas W. Nelson 1978-4-23 3883 Humboldt N of Samoa Comment
  UC1127607  Ribes sanguineum var. glutinosum A. E. Wieslander 1931-7-28 246 Humboldt Railroad Creek, Crannell Eureka Quadrangle Comment
  UC154114  Ribes sanguineum var. glutinosum Joseph P. Tracy 1901-4-26 1051 Humboldt region about Humboldt Bay (Humboldt Hill); Northern Coast Region 0 Comment
  UC921844  Ribes sanguineum var. glutinosum C. Epling, Wm. Robison 1935-7-22 Humboldt Patrick's Point Comment
  HSC71157  Ribes sanguineum var. sanguineum Thomas W. Nelson 1977-6-15 3426 Humboldt Along USFS Rd. 5N10 just N of its junction with USFS Rd. 6N08 1372 Comment
  CAS-BOT-BC173993  Ribes viscosissimum Joseph P. Tracy 1932-7-12 10466 Humboldt Ridges East of Corral Prairie 1828 Comment
  UC1222365  Romanzoffia californica Joseph P. Tracy 1950-6-15 18818 Humboldt at Huestis Rock on n.e. side Mail Ridge Comment
  UC1239758  Romanzoffia californica Joseph P. Tracy 1946-5-19 17529 Humboldt Kneeland Prairie 762 Comment
  UC552250  Romanzoffia californica Joseph P. Tracy 1923-4-29 6196 Humboldt Kneeland Prairie 762 Comment
  UC527555  Rosa eglanteria C. B. Wolf 1931-8-28 2363 Humboldt 1/8 mi from kRohnerville on road to Fortuna Comment
  CAS-BOT-BC146475  Rosa gymnocarpa Doris K. Kildale 1925-8-16 1142 Humboldt Trinity Summit Trail between Horse Linto Creek & [Tish-tang-i-tang] Tish Tang a Tang 1371 Comment
  POM275419  Rosa gymnocarpa Lyman D. Benson 1928-7-12 489 Humboldt Weott Ranger Station. Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  RSA113163  Rosa gymnocarpa Roxana S. Ferris 1955-7-11 12971 Humboldt E of summit near Willow Creek, along US Hwy 299 Comment
  UC1222307  Rosa gymnocarpa Joseph P. Tracy 1950-8-4 19267 Humboldt ne Lookout (at head of creek); Bull Creek State Park, Grasshopper Peak, Canoe Creek Comment
  UC492161  Rosa gymnocarpa var. gymnocarpa Joseph P. Tracy Jul 16 1930-Jul 19 1930 8909 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  CAS-BOT-BC146844  Rosa nutkana Alice Eastwood; John Thomas Howell 1937-6-23 4825 Humboldt Near Bridgeville Comment
  UC1199022  Rosa nutkana var. nutkana J. P. Tracy 1901-6-23 1163 Humboldt immediate vicinity of Eureka 0 Comment
  UC902158  Rosa pisocarpa Joseph P. Tracy 1947-7-4 17813 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC99308  Rosa rubiginosa C. B. Wolf 1927-8-30 1251 Humboldt 3 mi. S of Thorn along old coast road Comment
  CAS-BOT-BC133114  Rosaceae C. Hart Merriam 1921-8-19 s.n. Humboldt Big Lagoon 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
  RSA89565  Rubus discolor Philip A. Munz 1954-7-23 19864 Humboldt 5 miles SE of Carlotta Comment
  POM182019  Rubus laciniatus F. W. Peirson 1923-7-10 3755 Humboldt Wood border opening near road about 6 miles N of Garberville. Comment
  CAS-BOT-BC148385  Rubus leucodermis Doris K. Kildale 1927-5-13 3138 Humboldt Redwood Creek at Berry's 289 Comment
  HSC19651  Rubus leucodermis Lincoln Constance 1934-5-24 655 Humboldt S Fork Eel River, bordering lower Look Prairie on E. side 122 Comment
  HSC57010  Rubus leucodermis Overton, Butler 1979-7-24 9603 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  HSC58235  Rubus leucodermis Walter Overton 1979-8-1 12392 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC71715  Rubus leucodermis M. A. Baker 1980-6-26 2436 Humboldt Near Sims Creek 610 Comment
  CAS-BOT-BC147238  Rubus parviflorus Kenneth Clark 1980-3-23 535 Humboldt On middle terrace of north fork Dead Man's Gulch 76 Comment
  CAS-BOT-BC147239  Rubus parviflorus Joseph P. Tracy 1932-7-15 10576 Humboldt Near Corral Prairie 1524 Comment
  HSC97656  Rubus parviflorus Kevin Thomas 2004-4-26 17 Humboldt Jacoby Creek Rd. Comment
  JEPS47711  Rubus parviflorus Lincoln Constance 1934-5-31 756 Humboldt Bull Creek Flat South Fork Eel River, Bull Creek Region (along Bull Creek, from w boundary of Park to Grasshpper Peak (Squaw Creek) rd., South Fork Eel River) Comment
  SEINET4948924  Rubus parviflorus Unknown 1938-8-6 15397 Humboldt Eureka Comment
  HSC39968  Rubus spectabilis Linda M. Barker 1976-3-22 1345 Humboldt 3 mi. W of Arcata Comment
  RSA304831  Rubus spectabilis James R. Shevock 1972-3-26 1466 Humboldt Along Hwy 299. 366 Comment
  RSA74607  Rubus spectabilis E. K. Balls, Lee W. Lenz 1956-6-12 1667 Humboldt Between Willow Creek and Blue Lake. Comment
  UC1301222  Rubus spectabilis Paul C. Hutchison 1966-5-26 2741 Humboldt near U.S. highway 101 (Prairie Creek Redwood Grove State Park); Prairie Creek Redwood Grove State Park 50 Comment
  CDA26338  Rubus ursinus Gordon Leppig 1998-5-11 762 Humboldt Northern California Peatlands; Big Lagoon County Park. Big Lagoon Bog. Comment
  HSC12759  Rubus ursinus M. J. Athey 1970-11-5 20 Humboldt Havenway in Westhaven, Trinidad Comment
  UC1199049  Rubus ursinus J. P. Tracy 1901-6-23 1164 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC1199051  Rubus ursinus Joseph P. Tracy 1948-8-15 18134 Humboldt on ridge 2 mi e Grove's Prairie (Trinity Summit); Trinity Summit 1524 Comment
  UC666866  Rubus ursinus Joseph P. Tracy 1936-8-7 15112 Humboldt 2 mi se Devil's Hole (westerly exposure); Trinity Summit, se of Devil's Hole 1584 Comment
  UCD17848  Rubus ursinus H. Olmo 8-10 May 1962 62 36 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. Comment
  UCD89723  Rubus ursinus Lindsay Clark 2008-6-23 KRC 2 Humboldt Nadelos Campground in King Range Conservation Area, 3.8 miles SE of Shelter Cove. 551 Comment
  HSC99000  Rubus ursinus subsp. ursinus Cara Witte 2008-7-16 906 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  RSA89567  Rubus vitifolius Philip A. Munz 1954-7-23 19865 Humboldt 5 miles SE of Carlotta Comment
  SEINET3111192  Rubus vitifolius Steve Selva, Roger Jensen 1974-8-28 90 Humboldt Approx 10 mi S of Arcata on the sand dunes of the Samoa Peninsula. Comment
  RSA167402  Rudbeckia occidentalis Joseph P. Tracy 1948-9-12 18204 Humboldt Box Camp; Trinity Summit. 1463 Comment
  SEINET5710896  Rudbeckia occidentalis Lowell E. Urbatsch 1990-1 6799 Humboldt From Calif. 99 at Hawkins Bar (in Trinity County), turn onto the road to Denny and travel 1.7 miles down this road to a fork; take the left fork (not leading to Denny but to Waterman Ridge and Zeigler Point) and travel 6.7 miles down this road to another fork. Take the rt. fork (away from the rd. leading to Waterman Ridge and Willow Creek). On this rd. (FD 7 NO4) travel 1.5 miles to another fork; continue on 7No4N (the left fork) for 7.4 miles. At this point, take 7NO4N, the rd to Groves Prairie. The collection site is about 50m to the right near the Groves Prairie Creek sign. The site is 17.9 miles from Hawkins Bar just beyond mile marker 9.; Groves Prairie Comment
  HSC17569  Rumex acetosella D. B. Bader 1963-3-1 37 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  HSC64433  Rumex acetosella J. P. Smith 1971-10-6 4943 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC76221  Rumex acetosella Overton, Butler 1979-7-24 9767 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC32426  Rumex acetosella Linda M. Barker 1974-5-11 171 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  UC249658  Rumex maritimus Joseph P. Tracy 1921-8-7 5867 Humboldt Stone Lagoon Northern Coast Region 3 Comment
  SDSU9723  Rumex obtusifolius subsp. agrestis D. F. Howe 1959-8-4 2804 Humboldt 86 miles W of Weaverville on #299. 152 Comment
  UC249558  Ruppia maritima W. L. Jepson and J. P. Tracy 1921-8-7 5862 Humboldt Stone Lagoon; Northern Coast Region 3 Comment
  SEINET10966379  Rytidosperma penicillatum Joseph P. Tracy 1942-6-28 Tracy 17267 Humboldt Hungry Hollow. on Bald Mountain 610 Comment
  HSC77919  Sagina decumbens subsp. occidentalis L. P. Janeway, Paul Wilson 1984-5-25 818 Humboldt N Spit of Humboldt Bay; BLM lands near the Coast Guard Station 5 Comment
  UC668104  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1936-6-3 14851 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley, Willow Creek 152 Comment
  HSC4064  Sagina maxima subsp. crassicaulis D. E. Anderson 1961-9-13 1813 Humboldt Trinidad Beach Comment
  CAS-BOT-BC132667  Salix A. T. Whittemore 1980-3-15 80 -001 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC132712  Salix A. T. Whittemore 1980-3-15 80 -009 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  HSC94188  Salix alba Gordon Leppig, Sylvia Leppig, Kai Leppig 2000-4-16 1297 Humboldt Arcata Marsh and Wildlife Sanctuary, W bank of Hauser Marsh 1 Comment
  CAS-BOT-BC129886  Salix bonplandiana Mrs. H. P. Bracelin 1931-5-1 270 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  CAS-BOT-BC129898  Salix bonplandiana Joseph P. Tracy 1933-6-9 12529 Humboldt Shively - Northern Coast Ranges 30 Comment
  UC463039  Salix boothii Leland S. Smith 1931-9-16 2633 Humboldt Babbitt Spring; Jones Valley Range, Tahoe Nat'l Forest 2133 Comment
Read comments
Jul 10 2015
  POM220112  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 971 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SJSU219  Salix exigua C. R. Ball, H. E. Parks & J. P. Tracy 1932-5-17 1336 Humboldt above Trinity R, 1 mi below bridge on Trinity Highway 152 Comment
  UC1196600  Salix exigua var. hindsiana Joseph P. Tracy 1932-7-31 10294 Humboldt along Eel R. from S. Fork to Scotia (Larrabee Creek); Northern Coast Ranges 60 Comment
  UC469442  Salix exigua var. hindsiana Joseph P. Tracy 1931-9-19 9673 Humboldt Van Duzen R. Alton; Northern Coast Region 30 Comment
  UC512027  Salix exigua var. hindsiana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1331 Humboldt near bridge on Trinity Hwy. (in ... channel of Trinity R.) 152 Comment
  CAS-BOT-BC104103  Salix hindsiana Harold E. Parks 1931-5-14 0958 Humboldt Fernbridge, Eel River 10 Comment
  CAS-BOT-BC106860  Salix hookeriana W. J. Ferlatte 1967-6-13 1118 Humboldt Clam Beach Lagoon 6 Comment
  CAS-BOT-BC107747  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1226 Humboldt In pine barrens near the coast, 1 mile north of Samoa Comment
  CAS-BOT-BC107769  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1222 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  CAS-BOT-BC107774  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-12 1246 Humboldt Gravelly floodplain of Van Dezen River at Blue Slide 91 Comment
  HSC40862  Salix hookeriana Linda M. Barker 1976-4-30 1422 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC40869  Salix hookeriana Linda M. Barker 1976-3-22 1340 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC96367  Salix hookeriana Gordon Leppig 1999-4-15 1120 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  HSC96614  Salix hookeriana Gordon Leppig 2005-4-8 2208 Humboldt N Spit Swamp, edge of swamp 100 m S of Samoa bridge 4 Comment
  JEPS13091  Salix hookeriana Joseph P. Tracy 1936-2-23 14772 Humboldt Fortuna; bank of Eel River 15 Comment
  POM184871  Salix hookeriana H. E. Parks, Susan T. Parks 1932-4-10 1103 -a Humboldt Little River Lagoon. Trinidad. At sea level. 0 Comment
  POM219558  Salix hookeriana H. E. Parks 1931-3-24 912 Humboldt Fortuna. Eel River. 10 Comment
  RSA342501  Salix hookeriana Robert F. Thorne, Percy C. Everett 1965-8-7 35230 -c Humboldt Big Lagoon. 3 Comment
  SBBG59115  Salix hookeriana H. E. Parks 1931-5-28 999 Humboldt Little River Lagoon Comment
  UC1196547  Salix hookeriana Joseph P. Tracy 1926-2-21 7360 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC470422  Salix hookeriana Joseph P. Tracy 1931-9-19 9677 Humboldt Van Duzen R. at Alton; Northern Coast Ranges, , Van Duzen R. 30 Comment
  UC470429  Salix hookeriana Joseph P. Tracy 1931-9-20 9687 Humboldt Trinidad Northern Coast Region 60 Comment
  UC470438  Salix hookeriana Joseph P. Tracy 1931-9-19 9674 Humboldt on Van Duzen R. Alton; Northern Coast Region, , Van Duzen R. 30 Comment
  UC481279  Salix hookeriana Harold E. Parks 1931-8-1 1053 Humboldt Little River Lagoon Comment
  UC490476  Salix hookeriana H. E. Parks and Joseph P. Tracy 1932-8-13 10344 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  UC506346  Salix hookeriana Joseph P. Tracy 1933-3-19 10925 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC511999  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1238 Humboldt floodplain of Van Duzen R. at Blue Slide 91 Comment
  UC512095  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1214 Humboldt 1 mi n Samoa (in pine barrens near the coast) Comment
  UC512097  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1212 Humboldt 1 mi n Samoa (pine barrens near coast) Comment
  UC512122  Salix hookeriana Harold E. Parks and Joseph P. Tracy 1933-3-19 11007 Humboldt 2 mi w Bridgeville; Van Duzen River 228 Comment
  UC518898  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 4 Humboldt around Eureka Comment
  UC519341  Salix hookeriana Joseph P. Tracy 1933-7-20 12808 Humboldt near Blue Lake (on gravel bar); Northern Coast Region, Mad River 15 Comment
  CDA39526  Salix hookeriana Gordon Leppig 2005-4-8 2203 Humboldt Humboldt Bay Dunes and Wetlands; North Spit, south end of Peninsula Drive. Comment
  UC481814  Salix laevigata Mrs. H. P. Bracelin 1931-5-1 270 Humboldt between Miranda and Meyers (Sylvandale); S. Fork Eel R., Sylvandale Comment
  UC492484  Salix lasiandra subsp. lasiandra Harold E. and Susan T. Parks 1932-4-16 1099 Humboldt ca. 16 km. from mouth of Eel R. Ferndale Comment
  CAS-BOT-BC107576  Salix lasiolepis Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107581  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1255 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107615  Salix lasiolepis Harold E. Parks 1931-3-31 9327 Humboldt Redwood Creek, at Berry's 274 Comment
  CAS-BOT-BC107650  Salix lasiolepis Joseph P. Tracy; Harold E. Parks 1933-3-19 11007 Humboldt On Van Duzen River, 2 miles west of Bridgeville 228 Comment
  HSC96365  Salix lasiolepis Gordon Leppig 1999-4-15 1123 Humboldt Big Lagoon County Park, Big Lagoon Bog, E fen edge 3 Comment
  JEPS12910  Salix lasiolepis Joseph P. Tracy 1927-3-27 7870 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  UC512018  Salix lasiolepis C. R. Ball, H. E. Parks, and J. P. Tracy 1932-5-17 1340 Humboldt near pond at Willow Creek (Graham Ranch) near junction with Trinity River 152 Comment
  UC512025  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1333 Humboldt near bridge on Trinity Highway (foot of bank); Trinity River 152 Comment
  CAS-BOT-BC107293  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01241 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  POM219682  Salix lasiolepis var. bigelovii H. E. Parks 1931-5-14 963 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  CAS-BOT-BC107405  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-3-28 1677 Humboldt Redwood Creek at Berry's Comment
  CAS-BOT-BC125614  Salix melanopsis Doris K. Kildale 1925-6-27 765 Humboldt Yager Creek - near mouth 30 Comment
  CAS-BOT-BC125625  Salix melanopsis Joseph P. Tracy 1932-4-17 9798 Humboldt Eel River, Alton to Fortuna 15 Comment
  POM362860  Salix melanopsis H. P. Bracelin 1931-5-2 283 Humboldt E of Redwood Hwy, 6km S of Alton. 20 Comment
  SBBG57931  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt E of Redwood Hwy, 6 km S of Alton Comment
  UC1173599  Salix melanopsis Joseph P. Tracy 1937-7-24 15507 Humboldt Mad R. at mouth of Lindsey Creek Lindsey Creek; Mad R. 15 Comment
  UC1196565  Salix melanopsis H. E. Parks and Joseph P. Tracy 1931-3-26 9299 Humboldt Van Duzen R. near Alton; Northern Coast Ranges, Van Duzen R. 30 Comment
  UC1196637  Salix melanopsis Joseph P. Tracy 1932-8-27 10746 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC469449  Salix melanopsis Joseph P. Tracy 1931-5-3 9348 Humboldt Mad R. near Blue Lake; Northern Coast Region, Mad R. 15 Comment
  UC481285  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC481287  Salix melanopsis Harold E. Parks 1931-5-14 961 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC519376  Salix melanopsis Joseph P. Tracy 1933-6-11 12552 Humboldt S. Fork Eel R. near Miranda; Northern Coast Ranges, S. Fork Eel R. 60 Comment
  POM92416  Salix melanopsis L. R. Abrams 1922-6-25 8227 Humboldt 6 miles N of Garberville Comment
  CAS-BOT-BC129130  Salix scouleriana Harold E. Parks 1931-5-20 994 Humboldt Blue Lake, Mad River 15 Comment
  CAS-BOT-BC129165  Salix scouleriana Harold E. Parks 1933-1-1 1341 Humboldt Spruce Cove, Highway 101, Trinidad 64 Comment
  CAS-BOT-BC129172  Salix scouleriana H. E. Parks 1932-11-25 1351 Humboldt Spruce Cove (Parks Ranch), Trinidad Comment
  HSC56010  Salix scouleriana Gilbert Muth 1979-7-31 11493 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  JEPS12944  Salix scouleriana Joseph P. Tracy 1929-10-20 8680 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 701 Comment
  UC481272  Salix scouleriana Harold E. Parks 1931-5-28 1017 Humboldt edge of dunes Little River Lagoon Comment
  CAS-BOT-BC128999  Salix sitchensis Harold E. Parks 1931-3-26 906 Humboldt Alton, on Van Duzen River 15 Comment
  HSC20109  Salix sitchensis C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-12 1230 Humboldt Van Duzen River, 1.5 mi. E of Alton 30 Comment
  HSC38186  Salix sitchensis Thomas W. Nelson, James Nelson 1976-3-23 3288 Humboldt Eureka, E side of F St., 3800 block Comment
  HSC90465  Salix sitchensis Jean Hanson 1980-4-12 33 Humboldt Indian (Gunther) Island, Humboldt Bay, W end of island Comment
  HSC90749  Salix sitchensis Jean Hanson 1980-3-8 22 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC1196712  Salix sitchensis Joseph P. Tracy 1935-3-3 13716 Humboldt near mouth Mad R. 6 Comment
  UC481215  Salix sitchensis Harold E. Parks 1931-5-20 995 Humboldt Mad R. Blue Lake; , Blue Lake 15 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
  UC526709  Salix sitchensis Joseph P. Tracy 1934-3-25 13168 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  CDA42178  Sambucus racemosa Bell 1945-7-14 s.n. Humboldt Highway #54. 0 Comment
  HSC1798  Sanguisorba minor William J. Ferlatte, B. D. Rogers 1966-8-15 3122 Humboldt 1/2 mi. E of Azalea State Park Comment
  HSC104438  Sanguisorba officinalis J. Martin, Bianca Hayashi, Cheri Sanville 2012-8-28 Humboldt Northern end of Christmas Prairie Lake Comment
  CHSC68485  Sanicula arctopoides Vernon H. Oswald 1997-4-10 8330 Humboldt Elk Head, north end of Trinidad State Beach. Along the edge of the bluffs overlooking the ocean. 30 Comment
  HSC77517  Sanicula arctopoides K. Berg 1984-4-8 527 Humboldt South spit of Humboldt Bay, 1.4 mi. S of South Jetty, E of road Comment
  JEPS184  Sanicula arctopoides Joseph P. Tracy 1936-5-30 14838 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  HSC21621  Sanicula bipinnatifida Paul Shields May 1955 Humboldt Horse Mountain Comment
  HSC23089  Sanicula bipinnatifida D. E. Anderson 1965-5-1 3564 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  HSC90000  Sanicula crassicaulis Leonel Arguello 1989-6-10 Humboldt Lanphere- Christensen Dunes Preserve, 3 mi. W of Arcata. Beside the N fork of the Hunt trail. Comment
  UC1197096  Sanicula crassicaulis Joseph P. Tracy 1925-3-29 6949 Humboldt Northern Coast Ranges, Miranda, South Fork Eel River South Fork Eel River; Northern Coast Ranges, Miranda, South Fork Eel River 91 Comment
  UC154126  Sanicula crassicaulis Joseph P. Tracy 1908-6 2748 Humboldt Northern Coast Ranges, Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  HSC56174  Sanicula graveolens G. L. Clifton, Terry Griswold 1979-8-1 12078 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC642320  Sanicula laciniata Joseph P. Tracy 1927-5-8 7961 Humboldt along South Fork of Eel River, Miranda South Fork Eel River; , Miranda 121 Comment
  JEPS973  Sanicula tuberosa Joseph P. Tracy 1927-6-12 8156 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1219 Comment
  UC642316  Sanicula tuberosa Joseph P. Tracy 1933-6-13 12568 Humboldt Hoopa Mountain, near summit on road from Hoopa westward to Bair's Hoopa Mountain 1066 Comment
  UC1198890  Saxifraga integrifolia Joseph P. Tracy 1922-4-30 6000 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC441183  Saxifraga mertensiana Joseph P. Tracy 1911-6-4 3217 Humboldt Along Little River. 5 miles from the coast 121 Comment
  UC1198889  Saxifraga mertensiana Joseph P. Tracy 1932-4-24 9813 Humboldt between Miranda and Redway (South Fork Eel River); North Coast Ranges, South Fork Eel River 91 Comment
  SEINET8754002 Image available Scandix pecten-veneris Richard R. Halse 2015-1 9381 Humboldt Along U.S. Hwy. 101 ca. 2.5 miles southeast of Weott 123 Comment
  UC642324  Scandix pecten-veneris Joseph P. Tracy 1927-4-24 7926 Humboldt Eureka 15 Comment
  CAS-BOT-BC111697  Schoenoplectus pungens var. badius David Daniels Keck 1938-8-5 4772 Humboldt Big Lagoon, among rocks in open spots on beach. Comment
  UCD60367  Schoenoplectus pungens var. badius Gordon Leppig 1998-6-25 855 Humboldt McKinleyville, Mad River Estuary at end of Murray Rd. 0 Comment
  HSC44826  Schoenoplectus subterminalis Bruce G. Marcot 1978-7-3 Humboldt Red Mtn. Lake, submerged Comment
  UC1541345  Scirpus maritimus Harold E. Parks September 1934 5201 Humboldt Big Lagoon Comment
  HSC36890  Scirpus microcarpus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2058 Humboldt Beside Rd. 2S08 to Pine Mtn. Comment
  HSC48781  Scirpus microcarpus Brad Klipfel 1974-5-11 336 Humboldt SW side of Big Lagoon Comment
  HSC15632  Scoliopus bigelovii F. B. Plett 1963-4-24 30 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  HSC15639  Scoliopus bigelovii D. E. Anderson 1964-2-23 2904 Humboldt Near Indian Creek on Kneeland-Bridgeville Rd. Comment
  SEINET12050531  Scoliopus bigelovii F. H. Utech 1988-1 88 -023 Humboldt 0.1 mi N of Meyers Flat along Avenue of the Giants (alt. US 101), along South Fork Eel River 60 Comment
  UC175808  Scoliopus bigelovii Joseph P. Tracy 1913-6-20 4223 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Valley of Van Duzen R., Dinsmore's Ranch 762 Comment
  HSC21125  Scrophularia californica D. A. Shally 1965-5-15 43 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  HSC21127  Scrophularia californica R. I. Bonn 1965-5-9 44 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  SEINET12330006  Scrophularia californica F. H. Utech 1986-1 86 -407 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  UCD170580  Scrophularia californica Gordon Leppig 1998-4-14 739 Humboldt McKinleyville, Central Ave. south-bound lane near 101 junction. 42 Comment
  HSC58326  Scutellaria antirrhinoides Overton, Butler 1979-8-2 12623 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  JEPS62902  Scutellaria siphocampyloides Joseph P. Tracy 1932-5-17 10083 Humboldt Trinity River Valley, Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC65963  Sedum laxum subsp. flavidum M. A. Baker 1980-7-15 2941 Humboldt Near Whiting Ridge. 1341 Comment
  HSC66822  Sedum laxum subsp. flavidum M. A. Baker 1980-7-11 2769 Humboldt Near Red Mtn. 1341 Comment
  HSC79269  Sedum laxum subsp. flavidum D. K. Imper 1983-7-13 Humboldt Six Rivers National Forest, Bennett Peak Comment
  CAS-BOT-BC64701  Sedum laxum subsp. heckneri Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  JEPS47745  Sedum laxum subsp. heckneri Wayne Roderick 1961-7-10 61 .989 Humboldt 6.6 mi n Orleans (Klamath River, 1.4 mi s of Siskiyou County line (Somesbar)); Klamath River, n of Orleans 152 Comment
  HSC98999  Sedum laxum subsp. laxum Cara Witte 2007-6-19 294 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38 1220 Comment
Read comments
Aug 17 2011
  HSC44562  Sedum obtusatum subsp. retusum Brad Klipfel 1973-7-15 182 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC32326  Sedum radiatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5667 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC98588  Sedum radiatum Cara Witte 2008-7-16 916 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  CAS-BOT-BC63790  Sedum radiatum subsp. radiatum Doris Kildale Gillespie 1931-6-7 10602 Humboldt Soth Forb Mt. Blake Lookout. 1726 Comment
  JEPS73714  Sedum spathulifolium L. R. Heckard with T. I. Chuang 1968-7-5 1988 Humboldt along Mail Ridge Road 4 1/2 mi n of its junction with the Harris Road (e of Garberville); e of Garberville Comment
  JEPS48059  Sedum spathulifolium Lincoln Constance 1934-6-1 767 Humboldt Bull Cr. Road between Dyerville Bridge and Bull Cr. flat grove (mouth Bull Cr.) (Mouth Bull Cr, South Fork Eel River); South Fork Eel River, Bull Creek Region 45 Comment
  UC1225751  Sedum spathulifolium Joseph P. Tracy 1948-5-15 17981 1/2 Humboldt along Trinity Highway Willow Creek Canyon (on rocks at the East Fork Willow); East Fork Willow Creek, Willow Creek Canyon 457 Comment
  HSC6475  Sedum spathulifolium var. spathulifolium Lincoln Constance 1934-6-1 767 Humboldt S Fork Eel River, Bull Creek Rd. between Dyerville Bridge and Bull Creek Flat Grove. 46 Comment
  HSC6479  Sedum spathulifolium var. spathulifolium Francis Winter 1960-5-7 Humboldt 4 mi. S of Hoopa Indian Reservation, on Hoopa-Willow Creek Rd. 152 Comment
  LA209677  Selaginella oregana Lawrence L. Kiefer; 1963-8-6 769 Humboldt Patrick's Point State Park, Lookout Rock 45 Comment
  UC581696  Senecio glomeratus Joseph P. Tracy 1934-6-19 13234 Humboldt vicinity Carlotta 30 Comment
  HSC39001  Senecio integerrimus var. major Thomas W. Nelson, Jane P. Nelson 1976-5-31 2653 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  HSC72692  Senecio integerrimus var. major Gail Newton 1980-6-24 562 Humboldt Near Ladder Rock 1570 Comment
  HSC82545  Senecio integerrimus var. major Thomas W. Nelson 1979-7-11 5003 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC249532  Senecio integerrimus var. major Joseph P. Tracy 1922-6-12 6087 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC67933  Senecio integerrimus var. major J. P. Smith, J. O. Sawyer 1974-6-2 7652 Humboldt 1372 Comment
  UC1223148  Senecio integerrimus var. major Joseph P. Tracy 1951-5-26 19509 Humboldt opposite Willow Creek; Trinity River Comment
  UC1223157  Senecio integerrimus var. major Joseph P. Tracy 1950-6-15 18793 Humboldt 7 mi n Harris (Jenk's Ranch); Mail Ridge Comment
  UC1118080  Senecio minimus H. L. Person 1931-7-30 Humboldt Fieldbrook Eureka Quad., Fieldbrook Comment
  UC1199490  Senecio minimus Joseph P. Tracy 1920-9-19 5400 Humboldt along newly constructed road, North Fork of Mad River; Northern Coast Ranges 304 Comment
  HSC58095  Senecio triangularis G. L. Clifton, Griswold 1979-8-1 12011 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC58178  Senecio triangularis G. L. Clifton, Griswold 1979-8-2 12262 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 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
  UC1223185  Senecio vulgaris Joseph P. Tracy 1943-11-28 17454 Humboldt Eel River Bar at mouth Van Duzen (near Alton); Eel River Bar at mouth of Van Duzen Comment
  HSC31518  Sequoia sempervirens Steve Selva, Roger Jensen 1974-8-28 95 Humboldt Behind Humboldt State University, Arcata. Comment
  UC1222776  Sherardia arvensis Joseph P. Tracy 1950-6-18 18854 Humboldt on top Cape Ridge Comment
  CAS-BOT-BC205571  Sidalcea malachroides Joseph P. Tracy 1938-6-7 15860 Humboldt Canyon Creek, 5 miles SE of Korbel 152 Comment
  HSC93948  Sidalcea malachroides Claire Golec 1999-6-2 Humboldt HB&M, old landing off of skid road, along ridgeline above Van Duzen River 427 Comment
  HSC96580  Sidalcea malachroides Gordon Leppig, Todd Treadwell 2005-6-8 2248 Humboldt Blue Slide Creek watershed, Pacific Lumber Co. land. 245 Comment
  UC108878  Sidalcea malachroides J. W. Blankinship Jun 17 1893-Jun 20 1893 Humboldt Eureka , Hydesville (Hydesville) Comment
  HSC73172  Sidalcea malviflora M. A. Baker 1980-5-18 1350 Humboldt Near Black Mtn. 792 Comment
  UC302048  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1926-6-20 7659 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  RSA46866  Sidalcea malviflora subsp. patula Doris K. Kildale 1927-7-10 s.n. Humboldt Gans Prairie, Bald Mountain Comment
  CAS-BOT-BC5793  Sidalcea oregana subsp. eximia Joseph Prince Tracy 1907-6-25 2578 Humboldt In valley of Elk River, region about Humboldt Bay 152 Comment
  UC902187  Sidalcea oregana subsp. eximia Joseph P. Tracy 1947-7 17822 Humboldt Box Camp Meadow , Box Camp Meadow (Trinity Summit) 1463 Comment
  POM209753  Sidalcea oregana subsp. spicata Joseph P. Tracy 1932-7-10 10382 Humboldt Trinity Summit Corral Prairie, in wet meadow Comment
  UC14437  Silene antirrhina Chestnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC32097  Silene bolanderi D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5698 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
  UC1198362  Silene californica Joseph P. Tracy 1898-7-13 267 Humboldt near Hydesville; Northern Coast Region, near Hydesville 60 Comment
  UC668100  Silene californica Joseph P. Tracy 1935-6-23 13997 Humboldt French Camp Ridge 1066 Comment
  UCR123953  Silene californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6965 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  JEPS23253  Silene campanulata Joseph P. Tracy 1933-7-25 12871 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC174877  Silene campanulata subsp. glandulosa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  CHSC33021  Silene gallica James Payne Smith Jr. 1970-6-7 3804 Humboldt 0.6 miles north of Luffenholtz Beach along Calif. 1 near Trinidad. Comment
  CAS-BOT-BC387077  Silene gallica Doris K. Kildale 1928-5-30 6037 Humboldt mouth of Lindsey Creek Comment
  HSC81686  Silene grayi Thomas W. Nelson 1979-7-11 5005 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  CAS-BOT-BC389049  Silene laciniata subsp. californica Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CAS-BOT-BC389067  Silene laciniata subsp. californica Alice Eastwood; John Thomas Howell 1937-6-23 4760 Humboldt Dinsmore's Comment
  HSC4174  Silene laciniata subsp. californica R. Spellenberg 1964-6-16 434 Humboldt 0.25 mi. W of Hwy. 299 bridge over S Fork of Trinity River Comment
  UCSB1864  Silene laciniata subsp. californica Constance, Lincoln; Beetle, Alan 1940-5-16 Humboldt Coastal bluffs above Alton Comment
  UC465640  Silene latifolia subsp. alba Mrs. M. H. Manning 1901-1 Humboldt near Hupa (Hoopa Valley); near Hupa, Hoopa Valley Comment
  UC1222649  Sisymbrium altissimum Joseph P. Tracy 1950-8-20 19322 Humboldt 8 mi below Orleans (near Slate Creek, along Klamath River at Big Bar); Klamath River, Big Bar 121 Comment
  HSC98162  Sisyrinchium bellum Brad Klipfel 1973-4-28 12 Humboldt Along Canyon Creek Comment
  HSC23117  Sisyrinchium californicum Norman Dennis 1965-6-3 142 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  SBBG6657  Solanum americanum H. and M. Dearing 1939-5-25 3431 Humboldt near Samoa Comment
  CAS-BOT-BC157484  Solanum umbelliferum H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. Trail 1524 Comment
  RSA47108  Solanum umbelliferum Doris K. Kildale 1925-5-10 625 Humboldt Strongs Station Comment
  UC585974  Solanum umbelliferum Joseph P. Tracy 1924-5-4 6668 Humboldt 6 mi w of Bridgeville (Van Duzen River); Van Duzen River 121 Comment
  HSC67892  Solidago elongata J. P. Smith 1973-5-26 6848 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC1223177  Solidago elongata Joseph P. Tracy 1949-8-11 18458 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC365663  Solidago spathulata S. K. Harris 1939-9-5 s.n. Humboldt At Samoa Comment
  HSC12531  Solidago spathulata Wilbur Peterson 1970-10-7 22 Humboldt McKinleyville Beach at the end of Murray Rd. Comment
  HSC28941  Solidago spathulata Thomas W. Nelson 1971-11-11 598 Humboldt Foot of Murray Rd., McKinleyville. Comment
  HSC59683  Solidago spathulata George Kirn 1977-10-30 Humboldt 1/2 mi. from mouth of Elk River 8 Comment
  RSA254746  Solidago spathulata Thomas W. Nelson 1971-11-11 598 Humboldt At the foot of Murray Road, McKinleyville. Comment
  UC1409170  Solidago spathulata Robert F. Thorne and P. Everett 1965-8-5 35164 Humboldt Samoa Dunes 3 Comment
  HSC79453  Sonchus asper Kenneth Clark 1980-4-18 605 Humboldt Along access trail to Deadman's Gulch. 46 Comment
  HSC23255  Sparaxis tricolor Jana Kattenhorn 1971-4-7 214 Humboldt Around HSU campus, Arcata Comment
  CAS-BOT-BC235371  Spartina densiflora W. A. Silveus 1938-7-10 2966 Humboldt Eureka Comment
  POM313133  Spartina densiflora Malcolm A. Nobs, S. Galen Smith 1949-8-3 1180 Humboldt Marshes near mouth of Elk River, ca. 4 mi south of Eureka on Hwy 101 Comment
  RSA10096  Spartina densiflora Joseph P. Tracy 1924-8-4 6738 Humboldt Eureka, Marsh at R.R. station Comment
  HSC26364  Spergularia macrotheca T. O. Osborne 1970-4-5 85 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  HSC26360  Spergularia macrotheca T. O. Osborne 1970-6-18 46 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  CAS-BOT-BC149616  Spiraea douglasii H. E. McMinn 1922-7-1 289 Humboldt North of Scotia Comment
  CAS-BOT-BC149620  Spiraea douglasii Harley P. Chandler 1901-5-1 1197 Humboldt Humboldt Bay 30 Comment
  HSC40970  Spiraea douglasii Linda M. Barker 1976-6-14 1600 Humboldt 3 mi. W of Arcata Comment
  RSA239688  Spiraea douglasii Larry E. DeBuhr 1973-4-23 996 Humboldt Big Lagoon 10 miles S of Orick, SW end of lagoon Comment
  RSA472780  Spiraea douglasii Emery M. Whilton 1941-6-25 s.n. Humboldt Scotia. Comment
  UC492192  Spiraea douglasii Joseph P. Tracy 1932-8-28 10760 Humboldt Bald Mountain Northern Coast Ranges (at Lake Prairie) 1066 Comment
  HSC59648  Spirodela polyrhiza Michael Dalke 1979-5-18 91 Humboldt Hwy. 101, Clam beach pond 0 Comment
  HSC62923  Spirodela punctata J. M. DiTomaso 1979-4-21 893 Humboldt Next to Hwy. 101 at Crannell Rd. exit between Westhaven and Mckinleyville Comment
  UC577313  Stachys ajugoides var. rigida Joseph P. Tracy 1935-7-18 14102 Humboldt Table Bluff 15 Comment
  UCLA70839  Stachys ajugoides var. rigida Joseph P. Tracy 1937-6-20 15342 Humboldt Bear River 152 Comment
  JEPS63026  Stachys chamissonis Joseph P. Tracy 1940-9-26 16726 Humboldt Eureka 3 Comment
  HSC58159  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-8-2 12219 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  CAS-BOT-BC175345  Stellaria borealis subsp. sitchana Harley P. Chandler 1901-5-1 1196 Humboldt Humboldt Bay 30 Comment
  UC1198343  Stellaria nitens Joseph P. Tracy 1908-6 2737 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC161001  Stellaria nitens Joseph P. Tracy 1910-4-24 3126 Humboldt near Humboldt Bay (Ocean Beach at Humboldt Bay); Northern Coast Region Comment
  UC902035  Stenanthium occidentale Joseph P. Tracy 1949-8-26 18517 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC99013  Stipa lemmonii var. lemmonii Cara Witte 2007-6-7 231 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  HSC102164  Stipa occidentalis var. californica M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1074 Humboldt Patterson Meadows 1566 Comment
  HSC103294  Streptanthus tortuosus Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3014 Humboldt Six Rivers National Forest; ~ 1.7 mi. south of Berry Summit along Titlow Hill Road.; ~ 1.4 mi. west-northwest of Horse Mtn. Radio Tower. 980 Comment
  UC1541461  Streptanthus tortuosus var. orbiculatus W. K. Parks July, 1933 Humboldt Buck Mountain Comment
  HSC96249  Streptanthus tortuosus var. tortuosus Kaylea Eickhoff, Cara M. Witte 2005-6-8 4 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 980 Comment
  HSC58025  Streptopus amplexifolius G. L. Clifton 1979-7-31 11833 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC58219  Streptopus amplexifolius Walter Overton 1979-8-1 12357 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC35348  Symphoricarpos albus var. laevigatus A. M. Montalvo, J. D. Ackerman 1975-6-22 481 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36 Comment
  CAS-BOT-BC99165  Symphyotrichum chilense Carl B. Wolf 1927-8-29 1201 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge, Mt. Glen Comment
  SBBG60770  Symphyotrichum chilense R. Hartwell 1938-8-6 Humboldt Eureka Comment
  CAS-BOT-BC98928  Symphyotrichum foliaceum var. parryi Joseph P. Tracy 1937-8-12 15634 Humboldt Snow Camp 1402 Comment
  UC205155  Symphyotrichum hendersonii Joseph P. Tracy 1919-9-18 5224 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1889 Comment
  JEPS40830  Symphyotrichum subspicatum Milo S. Baker 1923-8-3 Humboldt roadside near Trinidad Comment
  UC1541367  Synthyris reniformis Harold E. Parks March 1934 4831 Humboldt Spruce Cove; Trinidad Comment
  HSC91945  Synthyris reniformis E. Mackey 1987-3-1 Humboldt Patrick's Point State Park, Big Meadow, next to copse Comment
  JEPS26266  Synthyris reniformis Joseph P. Tracy 1935-2-9 13711 Humboldt w side of Dow's Prairie 60 Comment
  UC1199274  Tanacetum balsamita Joseph P. Tracy 1936-6-21 14990 Humboldt Iaqua, near abandoned ranch site Iaqua 609 Comment
  CAS-BOT-BC376723  Tanacetum bipinnatum M. Louise Hutchinson 1913-1-1 s.n. Humboldt Eureka Comment
  HSC33751  Tanacetum bipinnatum A. Montalvo 1975-5-24 288 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC95076  Tanacetum bipinnatum Andrea Pickart 2002-7-2 144 Humboldt King Salmon Sand Spit 0 Comment
  CAS-BOT-BC376732  Tanacetum bipinnatum A. A. Heller 1937-6-12 15900 Humboldt On the coast at Trinidad just below the road leading up to the lighthouse on Trinidad Head Comment
  RSA165849  Tanacetum camphoratum P. A. Munz 1963-6-13 24524 Humboldt At Samoa. Comment
  RSA121874  Tanacetum camphoratum H. S. Yates 1936-6-16 5651 Humboldt 0.5 mile SW of Samoa. 6 Comment
  UC1223070  Tanacetum parthenium Joseph P. Tracy 1946-7-28 17624 Humboldt Head of Willow Creek Comment
  UC902012  Taraxacum officinale Harold E. Parks and Joseph P. Tracy 1949-6-25 11671 Humboldt Box Camp Meadow Trinity Summit 1524 Comment
Read comments
Aug 5 2009
  HSC97580  Taraxacum officinale C. Witte 2007-5-18 37 Humboldt Along National Forest 1. Approximately 1 mile north of intersection with 5N09. 1456 Comment
  HSC59852  Tauschia kelloggii M. A. Baker 1979-7-6 1007 Humboldt Just past the 4 mi. marker on Eyesee Rd. from Hwy. 96 Comment
  UC154074  Tauschia kelloggii Joseph P. Tracy 1908-6-7 2607 Humboldt on Mad River at Maple Creek; Northern Coast Ranges, Mad River, Maple Creek 152 Comment
  UC463017  Taxus brevifolia E. B. Copeland 1931-8-18 Humboldt below Densmore; Van Duzen River Comment
  CAS-BOT-BC447404  Tellima grandiflora Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC56241  Tellima grandiflora Walter Overton 1979-8-1 12338 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC63223  Tellima grandiflora M. A. Baker 1978-5-6 511 Humboldt 2 km. S of Weitchpec Comment
  UC667955  Thelypteris nevadensis Joseph P. Tracy 1937-7-25 15556 Humboldt ne of Hawkins Bar (Happy Camp Mt.); Trinity Summit Range 1280 Comment
  UC673060  Thermopsis gracilis Joseph P. Tracy 1937-5-31 15326 Humboldt rocky point at Ruby Creek (along Trinity Hwy); Willow Creek Canyon 518 Comment
  HSC64140  Thermopsis macrophylla J. O. Sawyer, J. P. Smith, J. Cole 1977-7-2 3050 Humboldt Rd. 11N17 between Dagsaw Springs and Divide Lake 793 Comment
  UC902019  Thlaspi arvense Joseph P. Tracy 1949-9-29 18582 Humboldt near Freshwater Corners; near Freshwater Corners 30 Comment
  NY17194  Thuja plicata W. B. Cooke 1969-8-19 2222 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA537270  Thuja plicata W. Wisura, J. Romero 1991-10-20 4611 Humboldt 9.7- 10.6 mi E of Hwy 101 near Arcata, along Hwy 299 above Blue Lake. Comment
  JEPS49714  Tiarella trifoliata var. unifoliata Milo S. Baker 1923-7-19 82 c Humboldt canyon near Carlotta; canyon near Carlotta Comment
  HSC103111  Tofieldia glutinosa M. Mesler 2010-7-15 834 Humboldt Near Blake Mtn, FS rd N01 off rd 4N12 Comment
  HSC59080  Tolmiea diplomenziesii Thomas Wood 1979-5-15 194 Humboldt E of Arcata at Essex Park, .5 mi. E of W End Rd. 21 Comment
  UC11943  Tolmiea diplomenziesii J. Burtt Davy Jun 1899 5628 Humboldt Hoopa Mt.; North Coast Ranges Comment
  UC11947  Tolmiea diplomenziesii W. C. Blasdale Jun 1899 5887 Humboldt Weitchpec North Coast Ranges, Klamath River (on the Klamath River, opposite the mouth of the Trinity) Comment
  BLMAR634  Tonella tenella Jennifer Wheeler 2011-6-15 634 Humboldt Lacks Creek, Pine Ridge Road 914 Comment
  UC27664  Tonella tenella C. C. Marshall 1888-1 Humboldt Comment
  UC642292  Torilis nodosa Joseph P. Tracy 1927-6-18 8183 Humboldt near Petrolia (Hills between Petrolia and Ocean) 152 Comment
  HSC58403  Torreyochloa pallida var. pauciflora Griswold, Butler 1979-7-11 7037 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC89478  Toxicodendron diversilobum P. A. Daly 1986-3-12 81 Humboldt Trinidad Head 61 Comment
  OBI15363  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt Dobbyn Creek; 3 mi NE of Alderpoint Comment
  UC1222896  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  UC582683  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  HSC98952  Tragopogon dubius Cara Witte 2008-7-28 955 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1592 Comment
  HSC56236  Trautvetteria caroliniensis Walter Overton 1979-8-1 12318 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  JEPS63123  Trichostema lanceolatum W. L. Jepson 1921-9-11 9466 Humboldt DeVoy Flat, South Fork Eel River Comment
  RSA82198  Trichostema laxum F. W. Peirson 1926-7-13 7063 Humboldt Mad River, vicinity of Blue Lake. Comment
  UCD117587  Trientalis latifolia D. Sanchez-Mata; S. Rivas-Martinez, M. Costa, and M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Patricks Point. 25 Comment
  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
  UC1223472  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1943-5-23 17426 Humboldt e Redwood Creek (on Trinity Highway); Berry's Mountain Comment
  SBBG122678  Trifolium arvense J. Dittes, J. Guardino 2003-6-7 2003 -65 Humboldt entrance rd to Aikens Crk Cmpgrd, ca. 4.1 air-mi NE of confluence of Trinity River and Klamath River, ca. 0.3 air-mi NW of confluence of Klamath River and Aikens Crk 106 Comment
  SDSU5270  Trifolium arvense D. F. Howe 1979-6-25 5195 Humboldt #299, one milesouth of Willow Creek. Comment
  POM160892  Trifolium bifidum Joseph P. Tracy 1922-4-30 5992 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UC1197181  Trifolium bifidum var. decipiens Joseph P. Tracy 1906-5-6 2448 Humboldt near Hydesville; North Coast Ranges 60 Comment
  UC1197054  Trifolium bifidum var. decipiens Joseph P. Tracy 1948-6-13 18027 Humboldt near Burr Creek, 5 miles SE of Bridgeville, Hillside Comment
  UC1223327  Trifolium campestre Joseph P. Tracy 1936-8-1 15060 Humboldt 6 mi se Blue Lake (near Bear Canyon Creek, in logged-off country) 365 Comment
  UC1197495  Trifolium cyathiferum Joseph P. Tracy 1933-7-15 12735 1/2 Humboldt lower foothills of nw slope; Buck Mtn Comment
  UC1223483  Trifolium cyathiferum Joseph P. Tracy 1937-7-19 15458 Humboldt lower foothills northwest slope; Buck Mtn Comment
  HSC15111  Trifolium depauperatum Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  HSC90242  Trifolium dubium Jean Hanson 1980-5-24 62 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  POM214889  Trifolium eriocephalum subsp. eriocephalum Joseph P. Tracy 8821 Humboldt Buck Mountain Comment
  UC16713  Trifolium eriocephalum var. eriocephalum J. Burtt Davy 1899-6-7 5385 Humboldt near Harris; North Coast Ranges Comment
  UC33571  Trifolium eriocephalum var. eriocephalum Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC495702  Trifolium fucatum Joseph P. Tracy 1927-6-5 8100 Humboldt s Yager Creek (valley); Northern Coast Ranges 762 Comment
  SEINET12147991  Trifolium fucatum var. virescens J. P. Tracy 1938-1 15950 Humboldt S side of Cape Ridge. Cape Mendocino, s of point of the cape 30 Comment
  UC1223452  Trifolium howellii Joseph P. Tracy 1934-7-18 13449 Humboldt at top Grouse Mtn 1524 Comment
  UC1197209  Trifolium longipes subsp. hansenii Joseph P. Tracy 1930-7-6 8837 Humboldt Northern Coast Ranges. Kneeland Prairie same place as #8721. 762 Comment
  HSC95210  Trifolium microcephalum Andrea Pickart 2002-7-3 155 Humboldt Lanphere Dunes: Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  UC495695  Trifolium microcephalum Joseph P. Tracy 1932-5-1 9893 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  UC495697  Trifolium microdon Joseph P. Tracy 1927-6-18 8184 Humboldt between Petriola and the ocean hills; Northern Coast Ranges 152 Comment
  UC249721  Trifolium oliganthum Joseph P. Tracy 1921-4-24 5438 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  UC165581  Trifolium repens Harley P. Chandler May, 1902 1092 Humboldt Scotia North Coast Ranges 60 Comment
  HSC84044  Trifolium subterraneum L. P. Janeway 1983-4-30 240 Humboldt 21 Comment
  UC1223532  Trifolium variegatum var. variegatum Joseph P. Tracy 1950-6-29 18938 Humboldt 6 mi se Arcata (Fickle Hill) Comment
  UCD109897  Trifolium willdenovii Joseph P. Tracy 1933-6-24 12615 Humboldt North end of Big Lagoon. Comment
  RSA181629  Trifolium wormskioldii Doris K. Niles 1950-6-1 8 Humboldt Island in Eel River, Niles field. Comment
  HSC89895  Triglochin maritima Leonel Arguello 1989-6-11 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  UC146219  Trillium albidum Joseph P. Tracy 1905-4-2 2155 Humboldt region about Humboldt Bay near Arcata; Northern Coast Region, Humboldt Bay 0 Comment
  CHSC59627  Trillium ovatum R. N. Raynor 1934-4-1 Humboldt Above Fort Seward. Comment
  HSC24377  Trillium ovatum J. O. Sawyer 1970-6-24 2278 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC71798  Trillium ovatum Gail Newton 1980-6-16 169 Humboldt Near Monks Camp. 1097 Comment
  HSC89492  Trillium ovatum P. A. Daly 1986-2-28 59 Humboldt Trinidad Head, along trail 61 Comment
  UC30089  Trillium ovatum Harley P. Chandler June, 1901 1281 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 304 Comment
  HSC15698  Trillium ovatum J. C. Reppas 1963-3-9 21 Humboldt 1.0 mi. from the Pony Farm and N Fickle Hill Rd. Comment
  UC1103502  Trillium ovatum Ralph Ferguson 1948-4-9 Humboldt Sutter tract Eureka 60 Comment
  UC1197816  Trillium ovatum Joseph P. Tracy 1930-7-16 8967 Humboldt forest near McKay Camp McKay Camp; S. Fork Mt. 1676 Comment
  CAS-BOT-BC521312  Trillium rivale Joseph P. Tracy 1911-7-7 3413 Humboldt Brannan Mountain; Viz Ridge North of Willow Creek, between Willow and Campbell Creeks, near the summit, in pine forest; Northern Coast Ranges 1219 Comment
  SEINET3992212  Trillium sessile Unknown 1928-4-29 8418 Humboldt Prairie Creek 152 Comment
  JEPS13339  Triphysaria eriantha subsp. eriantha Harley P. Chandler May, 1901 1142 Humboldt Humboldt Bay; North Coast Ranges, Humboldt Bay 3 Comment
  HSC20849  Triphysaria eriantha subsp. eriantha B. Francis 1964-5-19 45 Humboldt 0.5 mi. S of Fairhaven Comment
  CAS-BOT-BC199621  Trisetum canescens L. R. Abrams 1918-6-16 7142 Humboldt Willow Creek Comment
  UC1103150  Trisetum canescens J. P. Tracy 1900-7-4 877 Humboldt opposite Eureka (Sand Hills of Ocean Beach at Samoa); Samoa Comment
  UC526695  Trisetum canescens Joseph P. Tracy 1927-6-19 8194 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  CAS-BOT-BC193518  Trisetum cernuum John Thomas Howell; Gordon H. True; Lewis S. Rose 1972-6-5 48819 Humboldt Patrick Point State Park Comment
  HSC33515  Trisetum cernuum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5713 Humboldt McKeown Ranch, N of Dinsmore Comment
  JEPS75416  Trisetum cernuum W. L. Jepson 1932-7-26 16420 Humboldt Bull Creek 121 Comment
  UC526697  Trisetum cernuum Joseph P. Tracy 1926-5-22 7502 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  SEINET8719521 Image available Trisetum cernuum Unknown 1952-1 7551 Humboldt Spruce Grove, Trinidad. Comment
  HSC98366  Triteleia bridgesii T. Jimerson, J. Pageau 1979-5-24 472 Humboldt Near Orleans 226 Comment
  SD52191  Triteleia hyacinthina Frank Stephens 1894-5-14 10295 Humboldt Eel River. 320 Comment
  CAS-BOT-BC519142  Triteleia hyacinthina H. C. Cantelow 1939-6-4 3917 Humboldt Road to Bridgeville 4 1/2 miles west of Alder Point Comment
  RSA183022  Triteleia laxa Lee W. Lenz 1966-5-24 24657 Humboldt W of Berry Summit, US 299. Comment
  RSA36387  Triteleia laxa E. K. Balls, Lee W. Lenz 1956-6-12 21663 Humboldt 23 miles southwest of Willow Creek along U.S. Highway 299 toward Arcata 640 Comment
  UCD135134  Tsuga heterophylla Roman Gankin 1965-8-7 563 Humboldt Big Lagoon County Park. Comment
  UCR275103  Typha domingensis Charity A. Hartshorn 2016-4-24 20 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  HSC41923  Umbellularia californica Ed Cope 1977-4-23 25 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC59566  Umbellularia californica Rick Lundquist 1979-4-22 26 Humboldt 8.4 mi. up Fickle Hill Rd. from 11th St. across from HSU observatory 610 Comment
  UCD111533  Urtica dioica subsp. gracilis Linda M. Barker 1976-9-3 1696 Humboldt 3 miles west of Arcata. Comment
  POM380627  Urtica dioica subsp. gracilis Lyman D. Benson 1929-7-12 1792 Humboldt Weott Ranger Station; S Fork Eel River. Comment
  UC1197782  Vaccinium membranaceum Joseph P. Tracy 1932-7-20 10741 Humboldt Forks of Tish-Tang-A-Tang Creek Trinity Summit 1371 Comment
  HSC104091  Vaccinium ovatum Monica Rodriguez, William A. Worley 2015-2-21 9 Humboldt Rock Creek Ranch; 8.2 mi. along South Fork Rd. from Redwood Highway 199. 131 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
  UC412670  Vaccinium ovatum Mrs. M. H. Manning Apr 1899 Humboldt Hupa Valley Comment
  UCD166885  Vaccinium ovatum Colleen Rossier 2016-9-16 3 Humboldt In vicinity of Red Cap Road, plot Red Cap #2. 264 Comment
  JEPS66689  Vaccinium parvifolium Lincoln Constance 1934-5-31 759 Humboldt Bull Creek Region: Bull Creek flat, along Bull Creek from W boundary of Park to Grasshopper Peak (Squaw Creek) rd. N side of creek, South Fork Eel River Comment
  UC463032  Vaccinium parvifolium E. B. Copeland 1931-8-17 Humboldt Below Dinsmore; Van Duzen River Comment
  UC1239584  Valeriana sitchensis subsp. scouleri Mrs. R. D. Douglass 1919-5-8 Humboldt near Ferndale; Nothern Coast Region Comment
  UC416773  Valeriana sitchensis subsp. sitchensis Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5839 Humboldt Trinity Summit; North Coast Ranges Comment
Read comments
May 9 2008
  CAS-BOT-BC76050  Vancouveria hexandra Mrs. H. E. Wilder 1924-4-26 s.n. Humboldt Carlotta. Comment
  HSC3377  Vancouveria hexandra E. W. Styskel 1963-5-16 23 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  HSC99004  Vancouveria hexandra Cara Witte 2008-8-16 1026 Humboldt Ammon Ridge Road. Approximately 1/4 mile east of intersection with National Forest 1. 1548 Comment
  CHSC63383  Vancouveria planipetala Vernon H. Oswald 1994-6-29 6363 Humboldt Friday Ridge Rd. (Forest Rd. 6N08) 3.5 mi NE of Titlow Hill Rd., 4.6 mi S of Brush Mtn. Lookout Rd., S of Hey. 299 and Willow Creek. 1237 Comment
  HSC57096  Veratrum insolitum Overton, Butler 1979-7-24 9820 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UC1225852  Veratrum insolitum Joseph P. Tracy 1948-8-15 18120 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  HSC38435  Verbena lasiostachys J. P. Smith 1976-10-30 9000 Humboldt Mad River, E of Essex Lane exit. Comment
  HSC59134  Veronica americana Terry Roth 1979-5-29 102 Humboldt Glendale exit off Hwy. 299, gravel road towards Mad River, near Mad River 30 Comment
  HSC21195  Veronica americana P. Markle 1962-5-22 53 Humboldt Along road to City of Arcata reservoir Comment
  HSC21197  Veronica americana W. F. Nickel 1965-5-15 Humboldt 1/4 mi. E of Arcata on road to Arcata Reservoir, near Jolly Giant Parking Lot Comment
  JEPS26268  Veronica arvensis Joseph P. Tracy 1906-6-10 2482 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 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
  BLMAR723  Vicia gigantea Jennifer Wheeler 2014-4-20 723 Humboldt South Spit/Mike Thompson Wildlife Area, South Jetty Rd on Table Bluff cliff face 3 Comment
  OBI12617  Vicia hirsuta Joseph P. Tracy 2016-5-31 4689 Humboldt Stitz Crk. Along Eel River from S Fork to Scotia Comment
  CAS-BOT-BC263945  Viola adunca Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC21758  Viola adunca F. B. Plett 1963-3-9 5 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  HSC21772  Viola adunca T. M. Mingo May 1965 Humboldt W of College Cove Comment
  HSC36502  Viola adunca Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1888 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  UC668253  Viola adunca Joseph P. Tracy 1938-6-13 15913 Humboldt Grouse Mountain at Cold Springs; Grouse Mountain 1432 Comment
  RSA0006435  Viola californica Milo S. Baker 1946-6-14 11492 Humboldt South Fork Mt., on forest road in open spots in Fir forest, near Miller Spring and beyond. 1524 Comment
  RSA256721  Viola cuneata D. E. Anderson 1972-6-20 5749 Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit. Comment
  HSC21785  Viola glabella Frances Oldridge 1946-1 Humboldt Eureka Comment
  HSC21787  Viola glabella W. Lanphere 1937-5-11 Humboldt Hoopa Comment
  HSC71038  Viola glabella Thomas W. Nelson 1977-4-20 3330 Humboldt Along USFS Road 1N15 at summit 915 Comment
  CAS-BOT-BC536492  Viola glabella Henry M. Pollard 1948-7-18 s.n. Humboldt Near Orleans Comment
  HSC71155  Viola glabella Thomas W. Nelson 1977-6-15 3428 Humboldt Along FS 6N01, just N of Clear Lake 1372 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
  UC1103563  Viola glabella Joseph P. Tracy 1940-8-25 16710 Humboldt near High Prairie; Bald Mountain 1036 Comment
  CAS-BOT-BC536941  Viola lobata Volney Rattan 1879-6-1 s.n. Humboldt Klamath Comment
  CAS-BOT-BC536955  Viola lobata Volney Rattan 1879-6-1 s.n. Humboldt Klamath Comment
  UC668247  Viola lobata subsp. integrifolia Joseph P. Tracy 1937-7-2 15408 Humboldt Head of Little Hors-Linto Creek; Trinity Summit. 1371 Comment
  UC66205  Viola ocellata Mrs. M. H. Manning Apr. 1901 41 Humboldt near Hupa Comment
  UC668245  Viola ocellata Joseph P. Tracy 1938-5-1 15731 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC1761429  Viola palustris Milo S. Baker 1923-8-23 445 b Humboldt 3 1/2 mi E of Eureka 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
  HSC21856  Viola sempervirens H. E. Parks, S. T. Parks Apr 1944 24268 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC38828  Viola sempervirens J. P. Smith, J. O. Sawyer 1973-5-12 6708 Humboldt 10.1 mi. from Hwy. 96 on Big Hill Rd. 1372 Comment
  POM286646  Viola sempervirens Lyman D. Benson 1928-7-8 378 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; Watershed: S Fork Eel River. 61 Comment
  HSC100699  Vitis californica Carl C. Marshall Jun 1886 313 Humboldt Hoopa. Comment
  RSA44497  Vitis californica H. M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon. Comment
  SEINET10918233  Vitis californica Unknown 1988-7-25 Anonymous s.n Humboldt Hwy Am [P--], Chestnut & Drew Comment
  CAS-BOT-BC199801  Vulpia Doris K. Kildale 1927-6-25 3563 Humboldt Fearren's Ranch between Thorn & Shelter Cove Comment
  HSC40344  Vulpia bromoides Linda M. Barker 1976-5-13 1478 Humboldt 3 mi. W of Arcata. Comment
  SEINET11683266  Vulpia bromoides K. S. Erdman 1970-1 4809 Humboldt Gold Bluff Beach about 3 mi NW of Berry Glen and US 101 (Redwood N.P.) Comment
  UC1103717  Vulpia microstachys var. pauciflora Joseph P. Tracy 1913-6-19 4201 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1145190  Vulpia microstachys var. pauciflora Joseph P. Tracy 1936-5-29 14825 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  HSC73581  Vulpia myuros Gail Newton 1980-7-14 1482 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC9941  Vulpia myuros D. E. Anderson 1965-9-5 4088 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  HSC79517  Vulpia octoflora var. octoflora Kenneth Clark 1980-3-24 543 Humboldt Shelter Cove, N fork of Dead Man's Gulch. 76 Comment
  HSC101659  Whipplea modesta J. P. Smith, J. O. Sawyer 2011-4-23 13119 Humboldt Along Salmon Creek Rd., 4.6 miles from its junction with U.S. 101. 290 Comment
  HSC20445  Whipplea modesta John A. Dubois 1962-5-12 5 Humboldt 20 mi. E of Arcata Comment
  HSC20447  Whipplea modesta J. W. Johnson 1962-4-22 1280 Humboldt Willow Creek along the Hwy. on the canyon slope W of town Comment
  HSC73158  Whipplea modesta M. A. Baker 1980-5-18 1287 Humboldt Near Black Mtn. 1006 Comment
  UC1198901  Whipplea modesta Joseph P. Tracy 1908-6 2728 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UCR32168  Whipplea modesta David J. Keil 1983-7-2 17322 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  HSC100587  Whipplea modesta Carl C. Marshall Jul 1886 332 Humboldt Mountains. Comment
  POM281864A  Woodwardia fimbriata Lyman Benson 1928-7-9 396 Humboldt Weott Ranger Station. Seaward N Coast Range, S Fork Eel River watershed. 61 Comment
  CAS-BOT-BC382919  Wyethia angustifolia Doris K. Kildale 1927-5-20 3205 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC382922  Wyethia angustifolia Volney Rattan 1879-1-1 s.n. Humboldt Unspecified Comment
  HSC35597  Wyethia angustifolia Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2008 Humboldt French Camp, Bald Hills Comment
  JEPS32104  Wyethia angustifolia W. L. Jepson 1934-5-8 16717 Humboldt n of Redway; South Fork Eel River Comment
  UC175391  Wyethia angustifolia Joseph P. Tracy 1913-6-10 4079 Humboldt bluff near Bucksport; Northern Coast Ranges, Eureka 0 Comment
  UCD137002  Wyethia longicaulis Gordon Leppig 1998-6-1 872 Humboldt Horse Mountain. Buck Flat, Titlow Hill Rd. At Ammon Ridge Rd. 1524 Comment
  HSC12015  Zeltnera muehlenbergii Wilbur Peterson 1970-10-31 102 Humboldt Scotia Bluffs, edge of Eel River Comment
  HSC8417  Zeltnera muehlenbergii Paul Shields Jul 1955 Humboldt 3 mi. S of Myers Flat Comment
  HSC31209  Zigadenus micranthus D. E. Anderson 1972-6-20 5741 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC39225  Zigadenus micranthus D. E. Anderson, J. P. Smith 1971-7-6 1288 Humboldt Horse Mtn. Comment



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