Search Results — 2000 specimen records retrieved (1371 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/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC54516  Abies concolor Overton, Butler 1979-7-23 9432 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC54602  Abies concolor Overton, Butler 1979-7-24 9684 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  SD42285  Abronia latifolia Carl B. Wolf 1937-9-9 3064 Humboldt Coast, 2 miles south of Cape Mendocino 6 Comment
  RSA0025080  Abronia latifolia Joseph P. Tracy 1901-8-7 1271 Humboldt Sand Hills of Ocean Beach at Samoa, opp. Eureka Comment
  CAS-BOT-BC330542  Acer circinatum C. B. Wolf 1931-8-29 2368 Humboldt Redwood Highway, 3 miles N of Orick. (Davison's Ranch on Prairie Creek) 60 Comment
  RSA386075  Acer circinatum H. E. McMinn 1931-6-28 2549 Humboldt Orick to Requa Comment
  UC668175  Acer glabrum var. glabrum Joseph P. Tracy 1933-7-11 12707 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  HSC58071  Acer glabrum var. torreyi G. L. Clifton, Griswold 1979-8-1 11962 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  CAS-BOT-BC331583  Acer macrophyllum Doris K. Kildale 1927-5-7 3112 Humboldt Elk Ridge Comment
  CHSC19499  Acer macrophyllum H. S. Logsdon 1964-5-10 8 Humboldt 4.0 mi. N.E. of Orick at Boye's Prairie. Comment
  HSC12932  Acer macrophyllum C. E. Fellows 1970-11-9 351 Humboldt HSC Campus, S side Bio Greenhouse Comment
  HSC31652  Acer macrophyllum Timothy B. Devine 1974-5-4 318 Humboldt 1/4 mi. N of junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  HSC58099  Achillea millefolium G. L. Clifton, Griswold 1979-8-1 12027 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC59675  Achillea millefolium George Kirn 1977-10-12 Humboldt South shore Little River, 1/2 mile from mouth 8 Comment
  HSC68080  Achillea millefolium J. P. Smith, Steve Selva 1970-6-30 4103 Humboldt Comment
  RSA296791  Achillea millefolium var. arenicola J. P. Smith, Thomas W. Nelson 1977-6-30 9221 Humboldt Samoa Peninsula just east of the drag strip. Comment
  RSA120839  Achillea millefolium var. californica S. S. Tillett 1956-7-6 624 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  POM118513  Achlys californica Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  CAS-BOT-BC400001  Achlys californica E. Gundershaug; K. White; D. Johnson 1994-5-17 23 Humboldt 0.5 miles N of Hwy. 299 on old logging road, 17 miles E of Blue Lake 510 Comment
  CAS-BOT-BC400015  Achlys triphylla Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UC1103145  Achnatherum lemmonii Joseph P. Tracy 1926-6-20 7649 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  UC526666  Achnatherum lemmonii Joseph P. Tracy 1927-5-14 8000 Humboldt near south fork Trinity River (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC98300  Acmispon micranthus Norman H. Moe 1962-5-12 Humboldt Lanphere's place, .25 mi. from ocean. Comment
  BLMAR154  Acmispon parviflorus Donald Hazlett 1994-6-7 154 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC55327  Aconitum columbianum subsp. columbianum Griswold, Butler 1979-7-12 7159 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC73574  Adenocaulon bicolor Gail Newton 1980-7-14 1511 Humboldt Near Deadman Ridge 1097 Comment
  RSA416320  Adenocaulon bicolor Thomas W. Nelson, Jane P. Nelson 1977-7-1 3564 Humboldt Unsurveyed section east of sec. 25, Along north side of ridge between Bear and Blanket creeks. 1494 Comment
  UC249775 Image available Adiantum X tracyi Joseph P. Tracy 1924-9-16 6868 Humboldt Eureka 30 Comment
  SD92989  Adiantum aleuticum W. Bertsch 1953-7-29 213 Humboldt Near Weott 60 Comment
  UC418981  Adiantum aleuticum H. E. and S. T. Parks May, 1930 749 Humboldt Van Duzen River Comment
  POM208978  Adiantum jordanii Lincoln Constance 1934-6-4 823 Humboldt rocky bluff above Dyerville-Bull Creek road, in Border Forest, Humbolt Redwood Park. 91 Comment
  UCD137190  Adiantum jordanii K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  HSC76197  Agastache urticifolia Overton, Butler 1979-8-2 12510 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC59857  Ageratina occidentalis M. A. Baker 1979-7-7 1016 Humboldt 9.5 km E of Berry Summit along Hwy. 299, N bank of Willow Creek Comment
  JEPS36371  Agoseris apargioides William S. Cooper 1925-7-29 114 Humboldt Samoa Comment
  SD62068  Agoseris apargioides var. maritima Darley F. Howe 1965-8-7 4121 Humboldt Orick. Comment
  HSC32220  Agoseris grandiflora J. O. Sawyer 1970-6-24 2241 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  SEINET202623 Image available Agoseris grandiflora Joseph P. Tracy 1942-7-18 17275 Humboldt Garberville north end of town. Comment
  CAS-BOT-BC29624  Agoseris grandiflora var. grandiflora Doris Kildale 1927-7-3 3648 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC29627  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1936-6-17 14949 Humboldt Buck Mountain, lower foothills of its northwest slope 792 Comment
  UC1222928  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1950-7-15 19047 Humboldt 1 mi n Willow Creek; Trinity River Comment
  UC1222937  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1950-7-6 19024 Humboldt 3 mi s, sw slopes of Buck Mt Burr Valley; Buck Mountain 1066 Comment
  HSC75463  Agoseris heterophylla J. O. Sawyer 1980-7-18 3612 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  POM161907  Agoseris heterophylla Joseph P. Tracy 1921-6-12 5816 Humboldt Kneeland Prairie 762 Comment
  UC165755  Agoseris heterophylla var. heterophylla J. P. Tracy 1906-5-13 2455 Humboldt sand hills at Samoa; Ocean Beach Comment
  UC175200  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1913-6-14 4132 Humboldt at, (opposite Buck Mountain, in valley of Van Duzen River) Dinsmore's Ranch; Northern Coast Ranges, Van Duzen River 762 Comment
  UC1198339  Agrostemma githago Joseph P. Tracy 1899-4-23 310 Humboldt Eureka; Northern Coast Region 0 Comment
  CAS-BOT-BC127456  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon. 6 Comment
  CAS-BOT-BC127300  Agrostis exarata Joseph P. Tracy 1927-7-17 8271 Humboldt Three Cabins. Western foothills of Chaparral Mountain. 457 Comment
  UC1103373  Agrostis exarata J. P. Tracy 1900-9-9 953 Humboldt Yager Creek near Hydesville; Yager Creek 60 Comment
  UC1103376  Agrostis exarata Joseph P. Tracy 1934-6-23 13252 Humboldt along river near Blue Lake; Mad River 15 Comment
  UC552713  Agrostis exarata Joseph P. Tracy 1935-5-25 13857 1/2 Humboldt Fort Seward 106 Comment
  CAS-BOT-BC139500  Agrostis hallii Ira L. Wiggins 1932-7-25 5896 Humboldt Roadsides near McKinleyville. Comment
  RSA10065  Agrostis hallii Joseph P. Tracy 1929-7-4 8610 Humboldt French Camp Ridge 1067 Comment
  UC1145078  Agrostis hallii Joseph P. Tracy 1938-7-4 15983 Humboldt valley South Yager Creek; Valley of South Yager Creek 762 Comment
  UCD52675  Agrostis hallii P. B. Kennedy 1923-6-14 305 Humboldt Stoddard store, near Garberville. Comment
  HSC58793  Agrostis idahoensis Overton, Butler 1979-7-31 11459 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC186902  Agrostis microphylla Joseph P. Tracy 1900-7-4 875 Humboldt Ocean Beach at Humboldt; Northern Coast Region, Ocean Beach, Humboldt Bay Comment
  RSA152377  Agrostis oregonensis Joseph P. Tracy 1941-8-24 17039 Humboldt South Fork Mountain. Near McKay camp. 1677 Comment
  CDA20604  Agrostis pallens B. Freeman 2005-8-1 PDR 1368990 Humboldt North Coast; Big Lagoon. 0 Comment
  SEINET4558769  Agrostis pallens Doris Kildale 1925-1 s.n. Humboldt Trinity Summit 1524 Comment
  UC249863  Agrostis scabra Joseph P. Tracy 1924-8-31 6841 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 91 Comment
  CAS-BOT-BC138630  Agrostis stolonifera David D. Keck 1938-8-5 4771 Humboldt Big Lagoon. Comment
  CAS-BOT-BC138441  Aira caryophyllea H. E. Parks; S. T. Parks 1936-6-1 5850 Humboldt Spruce Cove, Trinidad. Comment
  SEINET7594519 Image available Aira caryophyllea Ira L. Wiggins 1932-1 5974 Humboldt Hillside at mouth of Little River Comment
  RSA205970  Aira praecox Joseph P. Tracy 1900-6-5 849 Humboldt Immediate vicinity of Eureka. 0 Comment
  UC677684  Allium amplectens C. C. and S. K. Harris 1936-6-24 645 Humboldt at point where road from Bridgeville to Dinsmore crosses the Little Van Duzen River Little Van Duzen River 710 Comment
  CAS-BOT-BC462973  Allium bolanderi Harley P. Chandler 1901-6-1 1434 Humboldt Klamath River, North Coast Ranges 243 Comment
  SEINET3153890  Allium campanulatum N. Dennis 1965-6-19 132 Humboldt about 1/4 mi S and 1 mi E of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 mi SE of Kneeland 792 Comment
  HSC76218  Allium falcifolium Overton, Butler 1979-7-24 9708 Humboldt Near Black Rock 1554 Comment
  CAS-BOT-BC469016  Allium falcifolium Thomas W. Nelson; James L. Nelson 1980-6-10 5400 Humboldt Blocksburg Quad.; Along Swayback Ridge 4-wheel drive road 1.25 miles south of junction with Forest Service road. Comment
  UC3080  Allium falcifolium H. N. Bolander 6554 Humboldt Red Mts. Comment
  RSA249388  Allium hoffmanii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5588 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  UC666906  Allium membranaceum Joseph P. Tracy 1929-6-3 8599 Humboldt Trinity River Valley at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  HSC76440  Allium siskiyouense Denis Kearns 1981-6-24 27 Humboldt Near Cedar Camp 1219 Comment
  HSC23259  Allium triquetrum Jena Kattenhorn 1971-5-26 259 Humboldt Vacant lots of HSC campus Comment
  UC275561  Alnus rhombifolia Joseph P. Tracy 1923-10-14 6575 Humboldt North Dobbyn Creek Northern Coast Ranges 152 Comment
  POM160842  Alnus viridis subsp. sinuata Joseph P. Tracy 1919-9-18 5241 Humboldt Trinity Summit. 1829 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
  RSA181868  Alopecurus geniculatus Joseph P. Tracy 1951-6-21 19523 Humboldt back of the Everett Beck house (formerly George Gray) bed of Goose Lake. Hydesville Comment
  SEINET6820704 Image available Alopecurus geniculatus A. A. Beetle, Stebbins; Tracy 1942-6-2 3458 Humboldt Loleta Swamp, S of Eureka Comment
  UCD55896  Alopecurus geniculatus Joseph P. Tracy 1917-6-17 4816 Humboldt in Salmon Creek Valley, at south end of Humboldt Bay. 15 Comment
  HSC8902  Alopecurus pratensis J. P. Tracy 1942-6-2 17096 Humboldt Alton. 30 Comment
  UC677555  Alopecurus saccatus A. A. Beetle with Stebbins and Tracy May 1942 3464 Humboldt 1 mi. e. Alton Comment
  UC132197  Amaranthus albus Joseph P. Tracy 1907-8-20 2598 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA167300  Ambrosia artemisiifolia Joseph P. Tracy 1950-8-20 19313 Humboldt Frank Graham's place. Trinity River Valley at Willow Creek. 152 Comment
  JEPS40954  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13688 Humboldt along coast in front of s end of Stone Lagoon; Dry Lagoon, Stone Lagoon 3 Comment
  JEPS94282  Ambrosia chamissonis Vernon Oswald and Lowell Ahart 1997-9-4 8844 Humboldt Big Lagoon County Park at the sw edge of Big Lagoon Big Lagoon; North Coast Region, Big Lagoon County Park, Big Lagoon 3 Comment
  HSC102083  Amelanchier alnifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 987 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC18509  Amelanchier alnifolia H. E. Parks, J. P. Tracy 1925-6-25 2775 Humboldt Lawrence Creek Comment
  BLMAR626  Amelanchier alnifolia var. semiintegrifolia Jennifer Wheeler 2011-6-15 626 Humboldt Lacks Creek, Pine Ridge Road 914 Comment
  BLMAR688  Amelanchier alnifolia var. semiintegrifolia Jennifer Wheeler 2012-6-19 688 Humboldt Lacks Creek, Pine Ridge Road 1097 Comment
  RSA46661  Amelanchier pallida Doris K. Kildale 1938-6-5 15389 Humboldt Horse Mountain Comment
  UC1198748  Amelanchier utahensis Joseph P. Tracy 1932-7-18 10719 Humboldt Head of Brett Hole; Klamath Mountains, Trinity Summit 1828 Comment
  UC466773  Amelanchier utahensis P. E. Goddard 1901-7-12 77 Humboldt Hupa Comment
  HSC46959  Ammophila arenaria J. P. Smith, Thomas W. Nelson 1977-6-30 9201 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  SD41377  Ammophila arenaria Edith A. Purer 1932-7-30 4678 Humboldt South of Orick, sand dunes. Comment
  HSC17823  Anagallis arvensis J. F. Knezevich 1968-5-14 434 Humboldt 13 mi. S of Ferndale at Cape Mendocino 0 Comment
  HSC17826  Anagallis arvensis C. Haley 1937-9-22 Humboldt Elk River Comment
  POM286830  Anagallis arvensis Lyman Benson 1929-7-19 1585 Humboldt Weet Ranger St. Comment
  HSC4616  Anaphalis margaritacea Roxana S. Ferris 1937-8-21 9387 Humboldt Shelter Cove Comment
  SEINET10475558  Anaphalis margaritacea Mary Susan Taylor 1975-4-12 Taylor 466 Humboldt Ca. 2000 yds E of Hwy 101, in Orick, by railroad tracks. 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
  UC1196188  Anemone deltoidea H. E. Parks and Joseph P. Tracy 1931-5-31 9540 Humboldt Lawrence Creek; North Coast Ranges; Lawrence Creek 457 Comment
  HSC47958  Anemone oregana var. oregana Brad Klipfel 1975-5-24 626 Humboldt Horse Mtn. Comment
  UC582654  Angelica genuflexa Joseph P. Tracy 1937-8-22 15670 Humboldt 2 mi s of Fields Landing 6 Comment
  CAS-BOT-BC221421  Angelica hendersonii Carl B. Wolf 1927-8-29 1216 Humboldt Devil's Gate, south of Cape Mendocino Comment
  HSC71330  Angelica lucida J. M. DiTomaso 1980-6-7 1571 Humboldt Elkshead, N of Trinidad. Comment
  HSC93230  Angelica lucida Clair Golec 1998-5-29 Humboldt Mouth of Jacoby Creek at Humboldt Bay. Comment
  UCD127119  Angelica lucida Joseph DiTomaso 1980-6-8 1575 Humboldt next to Hwy 101 between Arcata and Eureka. 1 mile south of Indianola Road. 1158 Comment
  HSC71978  Angelica tomentosa J. M. DiTomaso 1980-8-4 1834 Humboldt Hwy 299, 5 mi W of Willow Creek at 34.4 mi mark 671 Comment
  JEPS14219  Angelica tomentosa Joseph P. Tracy 1938-9-5 16145 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  UC642243  Angelica tomentosa Joseph P. Tracy 1938-9-5 16145 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  HSC5993  Anisocarpus madioides Francis Winter 1960-4-24 Humboldt 1 mi. W of Hoopa on Bair Rd. 305 Comment
  HSC97641  Antennaria suffrutescens Cara Witte 2007-6-12 242 Humboldt Horse Mountain Botanical Area. Near mine area. Forest Service Road 6N38. 1311 Comment
  RSA254784  Anthemis cotula Thomas W. Nelson 1973-8-19 1111 Humboldt McKeown Ranch north of Dinsmore Comment
  CAS-BOT-BC137779  Anthoxanthum aristatum K. L. Chambers 1984-6-16 5150 Humboldt Bald Hills Road, 7.0 miles past Lady Bird Johnson Grove, Redwood National Park, east of Orick. Comment
  CAS-BOT-BC137740  Anthoxanthum odoratum H. S. Yates 1936-6-16 5684 Humboldt Near Bayside. 9 Comment
  SEINET3918444  Anthoxanthum odoratum H. E. Parks, S. T. Parks 1952-1 24444 Humboldt Spruce Cove, Trinidad.; 0 61 Comment
  UCD56232  Anthoxanthum odoratum Linda M. Barker 1976-4-30 1402 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. 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
  UC1197334  Anthriscus caucalis Mrs. C. M. Wilder 1933-6-7 Humboldt Carlotta; near Beckwith Mill 60 Comment
  UC902210  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1948-8-8 18086 Humboldt Iaqua school house; Iaqua 609 Comment
  UC1198741  Aphanes occidentalis Joseph P. Tracy 1919-4-27 5129 Humboldt Humboldt Bay Northern Coast Region (Ocean Beach) Comment
  HSC45442  Aquilegia formosa var. formosa M. Alcasas 1978-5-6 62 Humboldt Maple Creek Rd. 1.5 mi. W of Mad River crossing 161 Comment
  UC492254  Arabidopsis thaliana Joseph P. Tracy 1932-5-17 10091 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  HSC70689  Arabis breweri var. breweri Gail Newton 1980-7-15 1568 Humboldt Near Sims Mtn. 1311 Comment
  HSC58191  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-8-2 12287 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC167257  Aralia californica Paul F. Covel 1939-8-7 1638 Humboldt Mather Memorial Grove Comment
  JEPS40071  Aralia californica Lincoln Constance 1934-5-29 740 Humboldt n. bank Bull Creek opposite Squaw Creek; Bull Creek Region, W. Fork Eel R. Comment
  OBI20498  Aralia californica Carl B. Wolf 1937-9-8 9302 Humboldt North Coast Range, Bull Crk-Petrolia Rd, 12 mi W of Redwood hwy 457 Comment
  RSA96051  Aralia californica E. K. Balls 1954-8-5 19754 Humboldt Grown in Botanic Garden, Prop. No. 5123, origin of material being plants coll. by C. B. Wolf, March 2, 1941, North Coast Range, Bull Creek to Petrolia Rd., 12 mi. w. of Redwood Hwy Comment
  UC933379  Aralia californica Annie M. Alexander and Louise Kellogg 1948-9-3 5587 Humboldt Trinity R. near Hoopa Reservation; Trinity R. Comment
  HSC7599  Arbutus menziesii Francis Winter 1960-4-24 Humboldt 4 mi. E of Blue Lake, Hwy. 299 305 Comment
  HSC7601  Arbutus menziesii L. D. Napier 1962-5-20 19 Humboldt 10 mi. SE of Arcata on Fickle Hill. 534 Comment
  UC672852  Arceuthobium campylopodum Joseph P. Tracy 1932-7-14 10571 Humboldt ridges e of Corral Prairie Trinity Summit 1676 Comment
  UC1198125  Arceuthobium campylopodum J. P. Tracy 1901-6-26 1060 Humboldt on Humboldt HIll Eureka vicinity 0 Comment
  UC582721  Arctostaphylos Joseph P. Tracy 1937-4-3 15247 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC55002  Arctostaphylos X cinerea Overton, Butler 1979-7-23 9522 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC33153  Arctostaphylos canescens Thomas W. Nelson, Brad Klipfel, Jane Cole 1974-5-8 1248 Humboldt Horse Mtn. area, E of microwave tower 1220 Comment
  CAS-BOT-BC23760  Arctostaphylos columbiana Alice Eastwood; John Thomas Howell 1934-4-11 1326 Humboldt Patrick's Point Comment
  CAS-BOT-BC23764  Arctostaphylos columbiana J. E. Adams 1935-5-12 1048 Humboldt Patrick's Point Comment
  CAS-BOT-BC23780  Arctostaphylos columbiana Joseph P. Tracy 1936-8-2 15074 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC23781  Arctostaphylos columbiana Joseph P. Tracy 1933-6-13 12583 Humboldt Hoopa Mountain. Near summit on road from Hoopa westward to Bair's. On ridge 1 mile S. of road. 1219 Comment
  CAS-BOT-BC23787  Arctostaphylos columbiana Doris K. Kildale 1928-2-17 4270 Humboldt Patrick's Point Comment
  CAS-BOT-BC23813  Arctostaphylos columbiana C. Hart Merriam 1920-9-19 s.n. Humboldt Bald Mt. between Korbel and Redwood Creek Comment
  CAS-BOT-BC23823  Arctostaphylos columbiana Carl B. Wolf 1927-8-30 1241 Humboldt Paradise, 5 or 6 mi. no. of Ettersburg. Comment
  HSC35750  Arctostaphylos columbiana Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 1994 Humboldt French Camp, Bald Hills. Comment
  LA42321  Arctostaphylos columbiana H. E. Parks; 1931-3-25 917 Humboldt near Patrick's Point Comment
  RSA622685  Arctostaphylos columbiana Jon E. Keeley 1996-10-13 27786 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  POM209627  Arctostaphylos columbiana var. columbiana H. E. Parks 1931-12 4950 Humboldt Hobson's Trinidad. 61 Comment
  RSA31954  Arctostaphylos columbiana var. tracyi A. A. Heller 1937-6-12 15918 Humboldt Along the road parallelling the ocean at Bishop ine Lodge, 3 miles north of Trinidad. Comment
  SEINET11989090  Arctostaphylos columbiana var. tracyi R. Gankin, Hildreth, W. R. 1967-1 1170 Humboldt 21.4 mi E of US 101 on Bald Hills Rd (from Orick), French Camp Ridge Comment
  UCD50897  Arctostaphylos glandulosa Joseph P. Tracy 1940-7-14 16688 Humboldt Wilder Ridge (near Kings Peak). 762 Comment
  OBI14679  Arctostaphylos hispidula Carl B. Wolf 1937-8-13 9226 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New Road towards Trinity summit 1219 Comment
  SD42559  Arctostaphylos hispidula Carl B. Wolf 1937-8-13 9226 Humboldt 8.0 miles east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  JEPS38942  Arctostaphylos hookeri subsp. montana Joseph P. Tracy 1934-3-11 13154 Humboldt French Camp Ridge Comment
  UCD51746  Arctostaphylos hookeri subsp. montana Joseph P. Tracy 1947-7-5 17787 Humboldt Trinity Summit; ridge top one mile west of Mud Springs. 1158 Comment
  HSC70248  Arctostaphylos manzanita M. A. Baker 1980-6-8 1913 Humboldt Near Buck Flat. 1554 Comment
  RSA633019  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27808 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  UC1198680  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1930-6-15 8757 Humboldt Dobbyn Creek 152 Comment
  UC585968  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1934-7-1 13275 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC45880  Arctostaphylos nevadensis Joseph P. Tracy 1932-7-12 10474 Humboldt Trinity Summit, Head of Brett Hole 1828 Comment
  CAS-BOT-BC45881  Arctostaphylos nevadensis Joseph P. Tracy 1927-6-12 8132 Humboldt Horse Mountain 1432 Comment
  HSC102094  Arctostaphylos nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 997 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  SEINET11993007  Arctostaphylos nevadensis S. W. Edwards 1985-1 85 -52 Humboldt Horse Mt., due E Arcata 20 mi airline Comment
  UCD52857  Arctostaphylos nevadensis subsp. knightii Roman Gankin; W. R. Hildreth 1976-10-26 1177 Humboldt 21.4 miles east of U.S. 101 on Bald Hills Road from Orick; French Camp Ridge. Comment
  HSC74562  Arctostaphylos patula M. A. Baker 1980-5-17 1270 Humboldt Near Le Perron Peak 1066 Comment
  UC1173708  Arctostaphylos patula Joseph P. Tracy 1939-8-16 16419 Humboldt Grouse Mountain 1524 Comment
  UC600967  Arctostaphylos patula Joseph P. Tracy 1937-7-29 15600 Humboldt South Fork Mt. 1676 Comment
  CAS-BOT-BC43995  Arctostaphylos uva-ursi Bolimannsou 1907-5-15 s.n. Humboldt Samoa Comment
  HSC71587  Arctostaphylos viscida Gail Newton 1980-6-16 180 Humboldt Near Monks Camp 109 Comment
  RSA636989  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-10-13 27788 Humboldt Bald Hills Road, eastern end of Redwood National Park, 223 km W of Hwy 96, N of Eureka. 600 Comment
  UC668115  Arenaria serpyllifolia subsp. serpyllifolia Joseph P. Tracy 1933-5-18 12192 Humboldt near Blue Lake; Mad River 15 Comment
  UC1716064  Armeria maritima subsp. californica M. S. Taylor 1990-8-22 6083 Humboldt Samoa Recreation Area, Samoa Peninsula, Staging Area Eureka Comment
  UC34161  Arnica discoidea Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  UC581753  Arnica discoidea Joseph P. Tracy 1937-7-2 15398 Humboldt on ridge 2 mi e of, Grove's Prairie; Trinity Summit 1524 Comment
  CAS-BOT-BC82427  Arnica discoidea Henry M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans Comment
  CAS-BOT-BC82647  Arnica latifolia Joseph P. Tracy 1932-7-20 10736 Humboldt Trinity Summit, Fir Woods near Corral Prairie 1524 Comment
  HSC8990  Arrhenatherum elatius J. P. Tracy 1927-9-25 8369 Humboldt Eureka, alongside railroad track 0 Comment
  JEPS36982  Artemisia douglasiana W. L. Jepson 1936-8-12 17886 Humboldt Philipsville South Fork Eel River, Philipsville Comment
  UC1222995  Artemisia dracunculus Joseph P. Tracy 1950-8-20 19325 Humboldt 8 mi below Orleans (at Big Bar); Klamath River near Snake Creek 121 Comment
  OBI17056  Artemisia pycnocephala Carl B. Wolf 1940-11-10 9782 Humboldt Coast S of Mendocino-1/8 mi N of Where rd turns inland to Petrolia Comment
  SDSU6205  Artemisia suksdorfii D. F. Howe 1963-7-8 3620 Humboldt 2.5 miles west of Bridgeville on #36. 152 Comment
  UC249827  Artemisia suksdorfii Joseph P. Tracy 1924-8-10 6812 Humboldt Blue Slide on Van Duzen River 91 Comment
  CHSC1538  Aruncus dioicus var. pubescens 1936-6-15 Humboldt This specimen collected at siltcoos Lake in Oregon. Comment
Read comments
Jan 8 2007
  CAS-BOT-BC453344  Aruncus dioicus var. vulgaris C. D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  RSA78412  Aruncus sylvester Philip A. Munz 1952-6-25 17840 Humboldt S of Grizzly Creek, N Fork of Trinity River, N of Helena. 1006 Comment
  CHSC111  Asarum caudatum 1952-7-7 Humboldt Coastal. Comment
  UCSB26616  Asarum caudatum Havlik, Neil 1968-8-20 Humboldt On the Ferndale-Capetown Road, about 5 miles from Ferndale 457 Comment
  UC35246  Asclepias speciosa Chesnut and Drew 1888-7-22 Humboldt Hy-Am-Pum Comment
  RSA167434  Asclepias speciosa Joseph P. Tracy 1950-7-6 19002 Humboldt On the Albee Road 2 miles south of Burr Valley 1159 Comment
  RSA21097  Aspidotis densa C. B. Wolf 1937-6-14 8825 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  UCSB29324  Aspidotis densa Phelps, M. 1972-3-22 Humboldt Abundant on Cedar Flat, Elk Ridge 762 Comment
  POM289176  Aster chilensis Lyman Benson 1928-7-10 448 Humboldt Clam Beach, Trinidad. 9 Comment
  SEINET11852839  Aster chilensis J. P. Tracy 1950-1 19362 Humboldt Cape Ridge, 0.5 mi S of Capetown, along coast road, 1 i inland from Cape Mendocino 200 Comment
  CAS-BOT-BC192859  Astragalus purshii var. lectulus Thomas W. Nelson; James L. Nelson 1980-6-10 5405 Humboldt Along Swayback Ridge 4-wheel drive road ca. 2.5 miles north of junction with Forest Service road 1S07 1463 Comment
  JEPS118177  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
  BLMAR244  Asyneuma prenanthoides Jennifer Anthony-Wheeler 1997-7-24 244 Humboldt Lacks Creek, growing along base of rd cut Wside 1219 Comment
  HSC98039  Asyneuma prenanthoides Cara Witte 2007-7-17 539 Humboldt Along 4N38. Road to Board Camp Mountain. 1388 Comment
  RSA44514  Athyrium filix-femina subsp. cyclosorum Henry M. Pollard 1947-8-28 s.n. Humboldt Perch Creek Canyon, Mount Orleans Comment
  UC370619  Athyrium filix-femina var. cyclosorum H. E. Parks June, 1925 3234 Humboldt Orick Comment
  UCR37541  Athysanus pusillus L. P. Janeway 1983-5-21 300 Humboldt Above Titlow Hill Road. 3.3 mi south of Hwy 299 1250 Comment
  HSC45051  Avena fatua R. Sutherland 1978-4-24 8 .24478 Humboldt Kinsey Ridge above Oat Creek 396 Comment
  RSA10053  Avena fatua Joseph P. Tracy 1933-5-20 12229 Humboldt Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape. Comment
  POM312956  Azolla filiculoides Malcolm A. Nobs, S. Galen Smith 1949-8-9 1246 Humboldt Clam Beach Comment
  CAS-BOT-BC99404  Baccharis pilularis Doris K. Kildale 1925-12-25 1441 Humboldt mouth of Eel River Comment
  CAS-BOT-BC99407  Baccharis pilularis Carl B. Wolf 1927-8-22 805 Humboldt 1 mile south of Orick Comment
  UC249855  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay Eureka, Humboldt Bay 30 Comment
  HSC78978  Baccharis pilularis subsp. consanguinea L. P. Janeway 1984-12-5 1192 Humboldt On the N Spit of Humboldt Bay; on the W side Samoa Rd. near the boat ramp 5 Comment
  RSA167192  Balsamorhiza deltoidea Joseph P. Tracy 1950-6-15 18792 Humboldt Mail Ridge, north of Harris 7 miles Comment
  CAS-BOT-BC99990  Balsamorhiza deltoidea Mark Bransom; Daniel Brown; Ron Hildebrandt; Nina Meiselman 1986-4-19 20 Humboldt Across Rt. 299 from White's Bar picnic area; 1/2 mi. up roadbank Comment
  HSC39056  Barbarea orthoceras Thomas W. Nelson, Jane P. Nelson 1976-5-31 2642 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  HSC45103  Barbarea orthoceras R. Sutherland 1978-2-18 8 .18278 Humboldt S side of mouth of Mattole River 3 Comment
  HSC64185  Barbarea orthoceras J. O. Sawyer, M. A. Ericksen 1979-6-23 3390 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  CAS-BOT-BC145787  Beckmannia syzigachne Joseph P. Tracy 1928-6-24 8472 Humboldt Valley of South Yager Creek. 762 Comment
  JEPS25618  Bellis perennis Rimo Bacigalupi 1959-7-7 7251 Humboldt immediately behind bluff headland of Cape Mendocino Cape Mendocino 30 Comment
  CAS-BOT-BC48155  Bensoniella oregona Joseph P. Tracy 1939-7-9 16327 Humboldt Snow Camp in moist ground around meadow. 1402 Comment
  HSC74672  Berberis aquifolium Gail Newton 1981-5-16 2172 Humboldt Near Bug Creek. 1228 Comment
  SJSU2887  Berberis aquifolium var. aquifolium R. D. Spadoni 1965-3-27 3 Humboldt 0.25 mi SE of Dinsmore on State Rte 36 762 Comment
  CAS-BOT-BC75680  Berberis nervosa Doris K. Kildale 1928-5-15 6032 Humboldt Bug Creek, Chaparral Mountain. Comment
  CAS-BOT-BC75684  Berberis nervosa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain Trail. 914 Comment
  HSC76280  Berberis nervosa Denis Kearns 1981-7-8 146 Humboldt Near Bluff Creek 622 Comment
  RSA46905  Berberis pinnata Doris K. Kildale 1926-3-21 1591 Humboldt McDowell Butte, Kneeland. 915 Comment
Read comments
Jul 25 2012
  UC169912  Berberis pinnata Mrs. M. H. Manning April, 1901 33 Humboldt near Hupa Comment
  BLMAR413  Bidens cernua Clara Sander 2007-8-22 413 Humboldt South Spit, east side of road near "lone tree" 9 Comment
  HSC55066  Bistorta bistortoides G. L. Clifton, Griswold 1979-7-31 11638 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CHSC26466  Blechnum spicant J. Detzer 1977-4-8 3 Humboldt S end of Patricks Point State Park, ca. 0.2 mi w of Hwy. 101 and 5 mi n of Trinidad. 60 Comment
  JEPS53053  Boechera acutina Joseph P. Tracy 1932-7-11 10396 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC14301  Boechera platysperma Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mountain Trail. 1676 Comment
  UC572212  Bolboschoenus maritimus H. S. Yates 1936-6-16 5673 Humboldt 1 mi ne Samoa; Eureka Quad., ne of Samoa Comment
  HSC39874  Bolboschoenus robustus Peter Sorensen 1976-8-6 Humboldt King Salmon Comment
  HSC44123  Botrychium multifidum Thomas F. Lyon, Linda M. Barker 1977-5-8 1715 Humboldt 3 mi. W of Arcata in S pasture Comment
  CAS-BOT-BC420266  Boykinia occidentalis L. R. Abrams 1922-6-25 8285 Humboldt Big Lagoon south of Orick Comment
  HSC27017  Boykinia occidentalis Brad Klipfel 1973-8-17 270 Humboldt Big Lagoon Park Comment
  HSC23805  Brassica nigra R. A. Vanbianchi 1971-9-10 78 Humboldt Junction of Fieldbrook Rd. and old Hwy. 299 Comment
  HSC89443  Brassica rapa P. A. Daly 1986-2-23 50 Humboldt Along trails at Trinidad Head 6 Comment
  CAS-BOT-BC106297  Brickellia californica Carl B. Wolf 1931-8-31 1252 Humboldt Gravel slopes west side of South Fork of Trinity River, 1 mile above its mouth. (Sandy Bar Swimming Hole) 243 Comment
  POM289092  Brickellia californica Lyman Benson 1928-7-11 456 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  HSC8563  Briza maxima G. L. Martin 1966-5-10 41 Humboldt Mckinleyville, Mad River beach area in back of Ocean Dr., E side of river Comment
  RSA614433  Briza maxima K. L. Chambers 1993-5-5 5717 Humboldt Hwy. 101, where it meets the ocean just south of Orick. Comment
  SEINET3921283  Briza maxima K. L. Chambers 1984-6-16 5149 Humboldt Bald Hills Road, 7.9 miles past Lady Bird Johnson Grove, E. of Orick.; 0 Comment
  HSC33759  Briza minor Margaret Weatherwax 1975-5-24 159 Humboldt Dunes off Samoa Blvd. across from boat landing Comment
  UCD58203  Bromus carinatus A. H. Murphy 1951-4-18 s.n. Humboldt Tooby and Prior Ranch, Blocksburg. 457 Comment
  UC1145185  Bromus carinatus var. carinatus Joseph P. Tracy 1936-6-17 149246 Humboldt Buck Mountain 792 Comment
  UCD60204  Bromus catharticus var. elatus A. H. Murphy 1947-8-19 s.n. Humboldt Fairground's exper. area. Fortuna. Comment
  UC1103359  Bromus diandrus Joseph P. Tracy 1912-7-26 3877 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA126884  Bromus laevipes H. S. Yates 1936-6-17 5686 Humboldt 1 mile west of Bridgeville 183 Comment
  UC37638  Bromus laevipes Joseph Burtt Davy 1899-6-21 5724 Humboldt Hupa Valley, Supply Creek Supply Creek; Hupa Valley, Supply Creek Comment
  SEINET202034 Image available Bromus orcuttianus Joseph P. Tracy 1949-7-19 18373 Humboldt Grouse Mtn. on Friday Ridge, at Friday's Camp 1219 Comment
  HSC9369  Bromus tectorum C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-17 1345 Humboldt Trinity River, near bridge on Trinity Highway 152 Comment
  CAS-BOT-BC185524  Bromus vulgaris Joseph Burtt Davy; Walter C. Blasdale 1899-6-10 5406 Humboldt North Coast Ranges. Hubbards Station. Comment
  HSC100142  Buddleja davidii G. F. Hrusa, C. E. Dogwin 2010-12-31 18278 Humboldt Kahlstrom Avenue, Westhaven 96 Comment
  HSC95586  Cakile edentula Andrea Pickart 2002-7-8 160 Humboldt N Spit Dunes, Mad River Co. Park, W of parking area 0 Comment
  UC1198281  Cakile edentula Joseph P. Tracy 1948-6-10 18063 Humboldt sand beach w. of town Trinidad 3 Comment
  UCD56962  Calamagrostis foliosa A. H. Murphy 1951-5-18 38 Humboldt Mattole River, second bridge upstream, ca. 1 mile south of Petrolia. 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-BC80385  Calocedrus decurrens Doris K. Kildale 1927-12-1 4203 Humboldt Klamath River at Orleans Comment
  HSC57012  Calocedrus decurrens Overton, Butler 1979-7-24 9611 Humboldt Near Titlow Hill, close to the town of Willow Creek. 381 Comment
  SEINET4152158  Calochortus amabilis Unknown 1914-5-14 4422 Humboldt Fort Seward 122 Comment
  JEPS17804  Calochortus amabilis Joseph P. Tracy 1916-6-19 4711 Humboldt Laribee Creek, at Bosworth's Northern Coast Ranges 457 Comment
  SEINET4169781  Calochortus catalinae Unknown 1935-7-14 Humboldt Clear Lake 1524 Comment
  HSC74278  Calochortus tolmiei M. A. Baker 1980-5-23 1395 Humboldt Near Buck Mtn. 1524 Comment
  HSC99312  Calochortus tolmiei M. A. Baker 1980-6-7 1813 Humboldt Near Brush Mtn. 1128 Comment
  JEPS17825  Calochortus tolmiei Joseph P. Tracy 1932-5-10 9931 Humboldt Bear River Ridge 609 Comment
  RSA113893  Calochortus tolmiei E. K. Balls, Lee W. Lenz 1955-5-15 20738 Humboldt 13.5 miles SW from Ferndale along Old Coast road to Capetown. 335 Comment
  UC1222580  Caltha biflora Joseph P. Tracy 1951-6-14 19408 Humboldt Snow Camp. 1402 Comment
  UC34627  Calycadenia fremontii Chesnut and Drew 1888-7-24 Humboldt Hy-Am-Pim Comment
  HSC102120  Calyptridium monospermum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1024 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC23151  Calystegia occidentalis subsp. occidentalis Harley P. Chandler June, 1901 1418 Humboldt Klamath River , Klamath River (North Coast Ranges) 304 Comment
  HSC48792  Calystegia occidentalis subsp. occidentalis Brad Klipfel 1975-6-17 660 Humboldt 2 mi. E of Titlow Hill Rd. along Hwy. 299 Comment
  RSA603171  Calystegia soldanella D. D. Keck, Jens Clausen 1935-6-16 3384 Humboldt Mouth of Little River. Comment
  HSC69837  Calystegia soldanella R. Kalal 1979-5-28 64 Humboldt W of Samoa Blvd. 3 Comment
  UC1586964  Camassia Juha Pykala and D. H. Norris 1987-6-5 1391 Humboldt e of Maple Creek (Snow Mountain Lake); Snow Mountain Lake 1386 Comment
  UC1225830  Camassia quamash Joseph P. Tracy 1947-5-3 17686 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC493384  Camassia quamash subsp. linearis M. S. Jussel 1931-5-1 s.n. Humboldt On road to Garberville Comment
  UC1197667  Camassia quamash subsp. quamash Joseph P. Tracy 1933-5-20 12272 Humboldt Cape Ridge back of Cape Mendocino; Cape Ridge 304 Comment
  RSA167258  Camissonia ovata Joseph P. Tracy 1951-5-5 19392 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town 61 Comment
  UC741172  Camissoniopsis cheiranthifolia subsp. cheiranthifolia C. C. and S. K. Harris, Clarence Crane Jr. 1939-8-23 970 Humboldt Samoa Comment
  JEPS11741  Campanula prenanthoides W. L. Jepson 1932-7-26 16413 Humboldt Bull Creek Comment
  SEINET10462964  Campanula prenanthoides Newton 1981-8-6 Newton 2408 Humboldt Iaqua Buttes Quad, near Mad River, N slope, sedimentary soil. 1308 Comment
  RSA21317  Campanula prenanthoides C. B. Wolf 1937-8-13 9215 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  SEINET10463219  Campanula prenanthoides Shields 1955-8-5 SHIELDS s.n. Humboldt 3 MI NW OF WEOTT, MOIST HILLSIDE Comment
  SEINET10939033  Campanula prenanthoides Pollard 1948-8-4 POLLARD s.n. Humboldt ORLEANS MTN TRAIL 4000 Comment
  SEINET201621 Image available Campanula prenanthoides Joseph P. Tracy 1911-7-4 3286 Humboldt Hills slopes at W side of Trinity River near Willow Creek. 244 Comment
  HSC58014  Campanula scouleri G. L. Clifton 1979-7-31 11815 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  SEINET10463645  Campanula scouleri Ira L. Wiggins 1930-7-22 Wiggins 4699 Humboldt ALONG BANK OF REDWOOD CR. BTWN BLUE L. & WILLOW CR. Comment
  SDSU2482  Cardamine angulata Wayne A. Bemis 1964-5-8 289 Humboldt North Coast redwood rain forest. Freshwater Forest of Freshwater City. 94 Comment
  CAS-BOT-BC37418  Cardamine californica LeRoy Ellsworth Detling 1935-4-20 1642 Humboldt Lansdale Redwood Grove. Comment
  CAS-BOT-BC37428  Cardamine californica John Thomas Howell 1954-4-24 29152 Humboldt Bull Creek Flat. Comment
  HSC57312  Cardamine californica Terry Griswold, Marvin Butler 1979-7-10 6318 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC6697  Cardamine californica Lincoln Constance 1934-5-26 651 Humboldt Bull Creek Region; N Dyerville Flat grove near Founder's Tree 49 Comment
  HSC6699  Cardamine californica D. E. Anderson 1965-6-1 3766 Humboldt Horse Mountain. 1220 Comment
  HSC91613  Cardamine californica E. Mackey 1987-3-1 Humboldt Patrick's Point State Park, by trail to Palmer's Point beach Comment
  HSC95664  Cardamine californica Kevin Thomas 2004-3-6 1 Humboldt Along beach access trail to College Cove Comment
  UC1199188  Cardamine californica Joseph P. Tracy 1918-4-21 4878 Humboldt on road to Kneeland Prairie (around Humboldt Bay); Northern Coast Ranges, around Humboldt Bay 152 Comment
  RSA167406  Cardamine californica var. integrifolia Joseph P. Tracy 1950-4-20 18619 Humboldt West slope of Buck Mountain, along highway, about 2 miles S of the Little Van Duzen crossing. Comment
  CAS-BOT-BC37792  Cardamine nuttallii Joseph P. Tracy 1927-6-12 8129 Humboldt Northern Coast Ranges. Horse Mountain. 1524 Comment
  CAS-BOT-BC37896  Cardamine oligosperma J. P. Tracy 1901-4-7 1009 Humboldt Immediate vicinity of Eureka. 152 Comment
  UC1199204  Cardamine oligosperma Joseph P. Tracy 1919-3-31 5166 Humboldt along Willow Creek ((Tributary of Trinity River, Humboldt Co) near its mouth); Northern Coast Ranges, along Willow Creek 152 Comment
  UCD114541  Cardamine oligosperma Joseph M. DiTomaso 1976-3-28 362 Humboldt 3 miles east of Willow Creek on Highway 299. Comment
  HSC6853  Cardaria draba J. P. Tracy 1933-5-19 12201 Humboldt Eel River, Alton to Fortuna 15 Comment
  CAS-BOT-BC384767  Cardionema ramosissimum Doris K. Kildale 1928-8-10 6265 Humboldt Samoa peninsula - Humboldt Bay Comment
  RSA167247  Carduus tenuiflorus Joseph P. Tracy 1942-6-28 17266 Humboldt Angel's Ranch' toward Hungry Hollow; Bald Mt. Comment
  CHSC107135  Carex abrupta R. E. Brainerd 2009-7-23 1568 Humboldt North Coast Range, South Fork Mountain; 19.6 miles west-northwest of Hayfork. UTM Zone 10 453477E 4494945N. 1661 Comment
  SEINET200666  Carex abrupta Joseph P. Tracy 1928-6-17 8450 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC194807  Carex arcta Joseph P. Tracy 1912-7-24 3806 Humboldt at Eureka Northern Coast Ranges, Eureka 0 Comment
  SEINET10585514  Carex arcta Joseph P. Tracy 1934-7-13 Tracy 13389 Humboldt Dow's Prairie. In sedge swamp with C. exsicata. 61 Comment
  UC562630  Carex athrostachya Joseph P. Tracy 1935-7-27 14306 Humboldt Trinity Summit, open places at McKay Prairie 1584 Comment
  RSA91675  Carex athrostachya Joseph P. Tracy 1935-7-27 14306 Humboldt Trinity Summit, open places at McKay Prairie. 1585 Comment
  CAS-BOT-BC19216  Carex barbarae Henry M. Pollard 1948-7-29 s.n. Humboldt Near Woodson Mine - Near Orleans. Comment
  UC1103102  Carex bolanderi Joseph P. Tracy 1926-6-6 7574 Humboldt Hoopa Mountain, near summit on road W from Hoopa to Bair's 1066 Comment
  CAS-BOT-BC19613  Carex brainerdii Joseph Prince Tracy 1937-7-24 15525 Humboldt Trinity Summit. Head of Devil's Hole. 1767 Comment
  CAS-BOT-BC110194  Carex buxbaumii Joseph P. Tracy 1927-4-23 7916 Humboldt Big Lagoon. 30 Comment
  UC562723  Carex concinnoides Joseph P. Tracy 1927-4-23 7911 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 60 Comment
  HSC98942  Carex concinnoides Cara Witte 2007-5-26 660 Humboldt National Forest 1. 1/2 mile south of intersection with Forest Service Roads 6N38 and 6N36. 1458 Comment
  CAS-BOT-BC34380  Carex cusickii Joseph Prince Tracy 1938-7-6 16023 Humboldt Big Lagoon. 6 Comment
  UC1115813  Carex densa Joseph P. Tracy 1938-6-9 15877 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC34973  Carex densa Joseph Prince Tracy 1936-6-3 14847 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC48137  Carex densa D. H. Norris 1971-7-17 19600 Humboldt Along Redwood House Rd., about 3 mi. W of intersection with Kneeland-Bridgeville Rd. Comment
  SEINET7557970 Image available Carex echinata subsp. phyllomanica Juha Pykala, D. H. Norris 1987-6-24 1900 Humboldt Big Lagoon, Big Lagoon fen. Comment
  CAS-BOT-BC19962  Carex exsiccata Mrs. H. C. Cantelow 1936-5-18 s.n. Humboldt 8 miles NE of Orick. Comment
  HSC76840  Carex exsiccata L. P. Janeway 1982-8-7 114 Humboldt Dry Lagoon 3 Comment
  CAS-BOT-BC19969  Carex exsiccata Doris K. Kildale 1927-7-23 3797 Humboldt Hoaglin Lake near Lassecks Peaks [Signal Peak]. Comment
  POM126509  Carex feta Joseph P. Tracy 1921-6-12 5828 Humboldt Butler Valley. 152 Comment
  CAS-BOT-BC21282  Carex fracta Joseph Prince Tracy 1937-7-25 15542 Humboldt Trinity Summit. Head of Hors-Linto Creek. 1371 Comment
  UC249741  Carex globosa Joseph P. Tracy 1921-4-24 5448 Humboldt Phillipsville Northern Coast Ranges, South Fork of the Eel River 121 Comment
  CAS-BOT-BC146593  Carex gynodynama Joseph P. Tracy 1927-5-8 7969 Humboldt Phillipsville; facing South Fork of Eel River 121 Comment
  HSC76807  Carex harfordii L. P. Janeway 1982-6-17 10 Humboldt 305 Comment
  UC50824  Carex hendersonii J. P. Tracy 1900-5-28 811 Humboldt immediate vicinity Eureka 0 Comment
  SEINET10855915  Carex hendersonii David Castaner 1984-5-29 Castaner 8070 Humboldt Entrance road to Cal-Barrel area. Moist forest. Comment
  UC303010  Carex hendersonii Joseph P. Tracy 1926-6-13 7598 Humboldt Blue Lake Northern Coast Ranges 152 Comment
  HSC74407  Carex hoodii Gail Newton 1980-8-10 2020 Humboldt Near Blake Mtn. 1798 Comment
  UC562436  Carex lenticularis var. impressa Joseph P. Tracy 1932-7-14 10554 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC61630  Carex lenticularis var. lipocarpa Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  HSC103142  Carex lenticularis var. lipocarpa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1068 Humboldt Patterson Meadows 1555 Comment
  HSC48375  Carex leptopoda D. H. Norris May 1970 12457 Humboldt Top of ridge above Freshwater Lagoon Comment
  POM126111  Carex lyngbyei Joseph P. Tracy 1922-5-28 6059 Humboldt Mouth of Little River 3 Comment
  UCR138659  Carex lyngbyei Gordon Leppig 1996-5-17 333 Humboldt Arcata, Arcata Marsh and Wildlife Sanctuary. Butcher Slough, E side about 20 m north of Interpretive Center Parking lot, just west of Sout I St 1 Comment
  HSC70470  Carex microptera Gail Newton 1980-7-20 1639 Humboldt Near Bell Swamps 1426 Comment
  RSA167282  Carex multicostata Joseph P. Tracy 1950-7-25 19064 Humboldt South Fork Mountain. Openings in fir forest near McKay camp. 1677 Comment
  HSC77271  Carex nebrascensis L. P. Janeway 1983-6-22 323 Humboldt Above Klamath River, near Aikens Creek 91 Comment
  UC562318  Carex nudata Joseph P. Tracy 1927-5-30 8082 Humboldt near Garberville (Redwood Creek) 121 Comment
  POM289940  Carex obnupta Lyman Benson 1929-7-15 s.n. Humboldt Clam Beach, Trinidad. Comment
  UC1598395  Carex obnupta Joy Mastrogiuseppe, Tom Nelson 1986-7-22 4353 Humboldt Burr Creek Burr Valley Comment
  BLMAR237  Carex obnupta Jennifer Anthony-Wheeler 1996-9-26 237 Humboldt King range, growing in wet places in creeksides habitat between Nadelos and Wailaki 548 Comment
  HSC91620  Carex obnupta E. Mackey 1986-6-16 Humboldt Patrick's Point State Park, beach N of Wedding Rock Comment
  SD51256  Carex obnupta Darley F. Howe 1961-8-1 3107 Humboldt Under Picea; 3 miles north of Arcata. Comment
  UCD140712  Carex obnupta L. P. Janeway; B. Castro 2004-9-10 8319 Humboldt North Coast. South Spit of Humboldt Bay, 3.6 km north-northeast of Table Bluff Lighthouse site; between South Spit Road and the Humboldt Bay mudflats. 2 Comment
  UC562653  Carex pachycarpa Joseph P. Tracy 1932-7-11 10411 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC119222  Carex pachystachya Harold Ernest Parks; Joseph Prince Tracy 1935-6-16 11271 Humboldt Buck Mt. Lower NW slope. 792 Comment
  HSC48037  Carex pachystachya D. H. Norris 1972-6-26 22971 Humboldt Along Grouse Mtn. Rd. about 3 mi. from intersection with Horse Mtn. Rd. Comment
  UC1103580  Carex pachystachya Joseph P. Tracy 1927-6-19 8204 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC562665  Carex pachystachya Joseph P. Tracy 1932-6-19 10242 Humboldt opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 762 Comment
  SJSU8437  Carex pansa H. T. Harvey 1977-7-5 603 Humboldt margin of tidal salt-marsh, Elk River Spit, Humboldt Bay Comment
  CAS-BOT-BC118822  Carex preslii R. Tallent 1987-8-11 895 Humboldt Six Rivers National Forest. Roadside S of Horse Mtn. 1389 Comment
  HSC70467  Carex rossii J. P. Tracy 1904-5-1 2041 Humboldt Eureka 0 Comment
  JEPS79859  Carex rossii Joseph P. Tracy 1935-6-2 13921 Humboldt Big Lagoon 3 Comment
  CHSC102858  Carex subbracteata Peter F. Zika 2009-6-15 24494 Humboldt Outer North Coast Range. Above Route 299, 2.3 road miles W of junction with Chezen Road, between Lord-Ellis and Berry summits. 680 Comment
  UC562656  Carex subfusca Joseph P. Tracy 1935-7-27 14296 Humboldt McKay Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC116679  Carex subfusca Joseph Prince Tracy 1928-6-24 8470 Humboldt Valley of south Yager Creek in wet meadow. 762 Comment
  RSA91641  Carex tumulicola Joseph P. Tracy 1932-5-1 9853 Humboldt Grassy open places at Redway. Vicinity of Garberville. 122 Comment
  UC1103115  Carex tumulicola Joseph P. Tracy 1927-5-8 7971 Humboldt Philipsville Northern Caost Ranges, South Fork of Eel River 121 Comment
  UC8083  Carex tumulicola Harley P. Chandler June 1901 1416 Humboldt Klamath River North Coast Ranges 335 Comment
  SEINET4170216  Carex unilateralis Unknown 1921-6-12 5828 Humboldt Butler Valley 152 Comment
  UC562329  Carex vesicaria Joseph P. Tracy 1934-7-18 13428 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC45970  Carex vesicaria J. P. Smith, Steve Selva 1970-6-30 4133 Humboldt Comment
  RSA28554  Carex viridula H. E. Parks 1935-09 5214 Humboldt Dry Lagoon, South of Orick Comment
  UC665690  Carex viridula var. viridula H. E. Parks September 1935 5214 Humboldt s Orick (in center of Dry Lagoon) 0 Comment
  HSC2874  Carpobrotus edulis C. B. Wolf 1927-8-29 1212 Humboldt Along the coast just S of Cape Mendocino. Comment
  CDA6949  Carthamus lanatus G. D. Barbe 1978-7-27 2418 Humboldt Along Salmon Creek, west of Miranda on Salmon Creek Road-Thomas Road. 0 Comment
  HSC22608  Castanea dentata J. P. Smith, J. O. Sawyer 1971-10-16 5051 Humboldt 5.1 mi. E of Carlotta on Hwy. 36 Comment
  UC162563  Castilleja Joseph P. Tracy 1911-5-30 3199 Humboldt Eureka; Northern Coast Region 0 Comment
  HSC99012  Castilleja affinis subsp. affinis C. Witte 2007-5-10 19 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1368 Comment
  BLMAR667  Castilleja affinis subsp. litoralis Jennifer Wheeler 2012-7-12 667 Humboldt King range, Strawberry rock 253 Comment
  JEPS93140  Castilleja affinis subsp. litoralis M. Wetherwax 1992-5-20 2435 Humboldt n side Wedding Rock (Patrick's Point State Park); Patrick's Point State Park 30 Comment
  UC902223  Castilleja affinis subsp. litoralis Joseph P. Tracy 1947-5-24 17692 Humboldt Big Lagoon 152 Comment
  HSC104042  Castilleja ambigua subsp. humboldtiensis C. Reynolds 2015-4-28 40 Humboldt Near creekside on Arcata Marsh, south of Interpretive Center 5 Comment
  OBI9388  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1938-7-15 16068 Humboldt Mouth of Eel River 3 Comment
  HSC55752  Castilleja applegatei G. L. Clifton, Griswold 1979-7-26 10284 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC20881  Castilleja exserta subsp. latifolia J. W. Johnson 1961-9-6 1106 Humboldt Arcata, Christenson Farm, Samoa Peninsula Comment
  HSC92193  Castilleja mendocinensis E. Mackey 1986-7-6 Humboldt Patrick's Point State Park, on trail to Wedding Rock. Comment
  HSC56307  Castilleja miniata Overton, Butler 1979-8-2 12624 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC213503  Castilleja miniata Joseph P. Tracy 1919-9-18 5228 Humboldt Trinity Summit; Northern Coast Ranges 1828 Comment
  HSC99043  Castilleja pruinosa Cara Witte 2008-6-4 678 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1307 Comment
  UC1502112  Ceanothus R. Sutherland 1976-1-30 4 .30.76 Humboldt Pt. Delgada Quad. 990 Comment
  HSC100905  Ceanothus Carl C. Marshall Jun 1887 462 Humboldt East branch. Comment
  SBBG115928  Ceanothus arcuatus J. M. Tucker 1948-9-3 1852 Humboldt House Mtn at jct of rd to Grouse Mtn and rd to Horse Mtn Mine 1463 Comment
  HSC40666  Ceanothus cordulatus Thomas W. Nelson, Jane P. Nelson 1976-7-1 2933 Humboldt Along 5E27 at its junction with 1S07 1555 Comment
  POM126157  Ceanothus cuneatus Joseph P. Tracy 1922-4-30 5998 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UCD111746  Ceanothus cuneatus Roman Gankin; W. R. Hildreth 1966-3-15 698 Humboldt State Highway 96, 8.4 miles north of Hoopa. Comment
  HSC37603  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-13 15 .13575 Humboldt Brushy flat 509 Comment
  HSC37592  Ceanothus foliosus var. vineatus R. Sutherland 1975-5-17 0 .17575 Humboldt Edge of Horse Mtn. 534 Comment
  POM118617  Ceanothus incanus Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville. Comment
  UCD112174  Ceanothus incanus T. I. Storer 1931-7-1 2218 Humboldt near Ferndale. Comment
  BLMAR249  Ceanothus integerrimus Jennifer Anthony-Wheeler 1997-7-24 249 Humboldt Lacks Creek, growing in disturbed sites among forest 1219 Comment
  HSC37606  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 7 .11775 Humboldt Along county rd. 259 Comment
  CAS-BOT-BC51206  Ceanothus parryi W. R. Dudley 1899-6-20 s.n. Humboldt South Fork of Eel River Comment
  HSC60193  Ceanothus parryi J. P. Smith, J. O. Sawyer 1975-4-6 8057 Humboldt N of Briceland on rd. to Hwy. 101 Comment
  UC1052837  Ceanothus parryi W. L. Colwell 1955-6-7 27 Humboldt Tree miles west of Weott, one half mile norht of Grasshopper Mountain lookout 914 Comment
  HSC44431  Ceanothus pumilus Brad Klipfel 1975-5-24 635 Humboldt Horse Mtn. Comment
  CAS-BOT-BC52223  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11089 Humboldt Summit of Trinidad Head 45 Comment
  CAS-BOT-BC52953  Ceanothus thyrsiflorus Doris K. Kildale 1927-5-14 3290 Humboldt Big Lagoon Comment
  HSC18332  Ceanothus thyrsiflorus D. E. Anderson 1962-2-10 1919 Humboldt 1.5 mi. S of Trinidad Comment
  HSC45481  Ceanothus thyrsiflorus Maralyn O'Meara 1973-2-9 127 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  CAS-BOT-BC52861  Ceanothus velutinus Doris K. Kildale 1926-4-25 1812 Humboldt Hoopa Mountain 304 Comment
  CAS-BOT-BC52867  Ceanothus velutinus Joseph P. Tracy 1932-7-17 10698 Humboldt Klamath Mountains - open ground at Corral Prairie 1524 Comment
  UC1193275  Ceanothus velutinus R. H. Neuns 1950-7-13 128 Humboldt 3 miles south of Alder Point 548 Comment
  UC906721  Centaurea benedicta Harold E. Parks and Joseph P. Tracy 1942-7-2 11580 Humboldt Dinsmore's 762 Comment
  UC1222953  Centaurea cyanus Joseph P. Tracy 1948-8-8 18097 Humboldt halfway between Bridgeville and head of S. Yager Bridgeville Comment
  CDA7312  Centaurea pratensis T. C. Fuller 1961-9-28 7046 Humboldt Opposite 2827 Hubbard Lane, one half block west of Harris Street at Redwood Acres Park. 0 Comment
  SEINET202640  Centaurium erythraea Unknown 1954-8-10 4755 Humboldt Along US Highway 101, one mile south of Garberville. 213 Comment
  RSA431135  Centaurium muehlenbergii Lyman Benson 1928-7-12 392 Humboldt Weott Ranger Station, South Fork of Eel River; Seaward North Coast Mt. Range. 61 Comment
  UC176957  Centunculus minimus Joseph P. Tracy 1912-7-21 3782 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  HSC63841  Cephalanthera austiniae M. A. Baker 1979-6-29 954 Humboldt 900 Comment
  JEPS64317  Cephalanthera austiniae Chesnut and Drew 1888-1 Humboldt Comment
  CAS-BOT-BC384900  Cerastium arvense Doris K. Kildale 1929-5-26 9142 Humboldt Klamath River at Orleans 152 Comment
  UC162888  Cerastium arvense Harley P. Chandler June, 1901 1384 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  UC1198320  Cerastium glomeratum Joseph P. Tracy 1911-7-5 3308 Humboldt near mouth Willow Creek; Northern Coast Ranges, Willow Creek (tributary of Trinity R. 182 Comment
  HSC4103  Cerastium glomeratum S. R. Johnson 1965-4-16 43 Humboldt 1.5 mi. N of Luffenholtz Beach. Comment
  HSC47013  Cerastium glomeratum Sheila Logan 1978-4-7 2 Humboldt Samoa Sand Dunes, 1/4 mi. N of Coast Guard Station at N spit of Samoa Peninsula Comment
  UC160965  Cercis occidentalis Harley P. Chandler June, 1901 1428 Humboldt Klamath River North Coast Ranges 304 Comment
  UC249526  Cercis occidentalis Joseph P. Tracy 1922-4-30 6003 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC91616  Chamaecyparis lawsoniana Susan H. Bicknell 1987-8-29 Humboldt Patrick's Point State Park, near Penn Creek Comment
  RSA47095  Chamaecyparis lawsoniana Doris K. Kildale 1926-8-15 2522 Humboldt Willow Creek Flat-- up Willow Creek above[?] 3 mi. from mouth 152 Comment
  CAS-BOT-BC166040  Chamerion angustifolium subsp. circumvagum Peter H. Raven; R. Snow 1958-7-21 13651 Humboldt 2.9 miles south of Ferndale on road to Cape Mendocino Comment
  HSC26872  Chamerion angustifolium subsp. circumvagum Clifton Raymond Chesbrough 1973-6-19 97 Humboldt 1/2 mi. N of College Cove along the coast Comment
  RSA44511  Cheilanthes gracillima Henry M. Pollard 1947-9-1 s.n. Humboldt Peak of Somes Mountain, near Orleans 1524 Comment
  UC275478  Chenopodium ambrosioides Joseph P. Tracy 1925-7-26 7212 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  RSA53826  Chenopodium ambrosioides var. ambrosioides H. M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  HSC61129  Chimaphila menziesii Jimerson, J. Pageau 1979-6-13 555 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  UC1197598  Chimaphila menziesii Joseph P. Tracy 1932-7-14 10568 Humboldt woods near Corral Prairie (Trinity Summit); Trinity Summit 1584 Comment
  UC1197602  Chimaphila menziesii Joseph P. Tracy 1947-8-24 17903 Humboldt near Box Camp (Trinity Summit); Trinity Summit 1524 Comment
  HSC98134  Chimaphila menziesii Cara Witte 2007-6-26 358 Humboldt Horse Mountain Botanical Area. 1341 Comment
  HSC48861  Chimaphila umbellata Brad Klipfel 1973-7-31 243 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55102  Chimaphila umbellata G. L. Clifton 1979-7-31 11834 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC72630  Chimaphila umbellata J. P. Smith 1977-7-3 9253 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  UCD117377  Chimaphila umbellata Linda M. Barker 1976-6-14 1597 Humboldt 3 miles west of Arcata. Comment
  CAS-BOT-BC451494  Chimaphila umbellata Milo S. Baker 1947-8-10 11899 Humboldt 15 mi. NE of Hoopa near end of forest road 1371 Comment
  JEPS49021  Chrysolepis chrysophylla Hilda W. Grinnell 1932-7-9 5 Humboldt above Kerlin Creek (South Fork Mt.); South Fork Mt. Comment
  RSA1834  Chrysolepis chrysophylla Carl B. Wolf 1930-10-30 1786 Humboldt Old coast road at Thorn. 305 Comment
  UC519308  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt French Camp Ridge; Northern Coast Ranges 1066 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
  HSC62998  Circaea alpina subsp. pacifica David Wheeler 1979-5-13 106 Humboldt Redwood Valley, 1.0 mi. S of dump on other side of Redwood Creek from rd. Comment
  HSC70502  Circaea alpina subsp. pacifica Gail Newton 1980-7-20 1620 Humboldt Near Bell Swamps 1426 Comment
  UC314621  Circaea alpina subsp. pacifica Joseph P. Tracy 1924-6-1 6691 Humboldt at crossing of the Kneeland Rd. Lawrence Creek; Northern Coast Ranges, Lawrence Creek 609 Comment
  JEPS59107  Cirsium arvense W. L. Jepson 1932-7-26 16403 Humboldt Bull Creek Comment
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Jan 17 2008
  UC1223063  Cirsium arvense Joseph P. Tracy 1950-8-1 19245 Humboldt near summit e of North Fork of Mad River Comment
  HSC5371  Cirsium arvense H. D. Sumner 1959-7-13 Humboldt Redwood Creek near Hwy. 299 305 Comment
  HSC98566  Cirsium cymosum var. cymosum Cara Witte 2008-7-30 981 Humboldt Horse Mountain Botanical Area. 1/4 mile east of intersection National Forest 1, and Forest Service Roads 6N36, 6N38. 1426 Comment
  HSC98616  Cirsium cymosum var. cymosum Cara Witte 2007-7-10 472 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38 1349 Comment
  JEPS89473  Cirsium douglasii var. breweri Dean W. Taylor 1991-8-15 12302 Humboldt ridge 1 mi w of Horse Mountain (North Coast Ranges); North Coast Ranges 1493 Comment
  UC1223057  Cirsium occidentale var. candidissimum Joseph P. Tracy 1950-8-4 19257 Humboldt at head of Canoe Creek; Bull Creek State Park, Grasshopper Peak, Canoe Creek Comment
  HSC39065  Cirsium occidentale var. candidissimum R. Sutherland 1976-6-23 1 .23676 Humboldt Telegraph Ridge 457 Comment
  HSC97210  Cirsium occidentale var. venustum Kiera A. Freeman, Heather J. Perry 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  CAS-BOT-BC288712  Cirsium remotifolium Joseph P. Tracy 1930-7-21 8887 Humboldt Bear River RIdge Comment
  UC1223041  Cirsium remotifolium var. odontolepis Joseph P. Tracy 1949-8-11 18472 Humboldt 2 to 6 mi s from Grouse Mt. (e of headwaters of Redwood Creek, beginning where the electric power line crosses, and working south); Kinsey Ridge 1280 Comment
  HSC5385  Cirsium vulgare J. W. Johnson 1961-9-10 1113 Humboldt Arcata, S of Dune 3 N, Christenson Farm, Samoa Pennisula Comment
  CAS-BOT-BC228803  Cistanthe umbellata R. K. Gierisch; D. H. Esplin 1969-7-1 3528 Humboldt Six Rivers National Forest. Grouse Mtn. Comment
  HSC45282  Clarkia amoena Clifton Raymond Chesbrough 1971-7-26 100 Humboldt 2 mi. N of Trinidad Comment
  UC198871  Clarkia amoena Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC56305  Clarkia amoena Joseph Burtt Davy 1899-6-21 5731 Humboldt Supply Creek Comment
  CAS-BOT-BC160966  Clarkia amoena subsp. amoena Alice Eastwood 1921-7-21 10663 Humboldt [Vanduzen] Van Duzen River, along the road Comment
  RSA125035  Clarkia amoena subsp. amoena Peter H. Raven, R. Snow 1958-7-21 13656 Humboldt 7.2 miles NW of Capetown on road to Ferndale. Comment
  POM271818  Clarkia amoena subsp. huntiana Lyman Benson 1929-7-19 1865 Humboldt Dyerville to Matole River. Comment
  CAS-BOT-BC164177  Clarkia concinna M. S. Jussel 1931-5-2 s.n. Humboldt Garberville Comment
  UC594157  Clarkia purpurea S. K. Harris, J. P. Tracy 1936-6-10 3277 Humboldt near mouth South Fork Trinity River (hills w of river) 640 Comment
  RSA249400  Clarkia purpurea subsp. purpurea D. E. Anderson, Thomas Nelson, S. Dowty 1973-6-17 5701 Humboldt McKeown Ranch north of Dinsmore Comment
  CAS-BOT-BC172501  Clarkia purpurea subsp. quadrivulnera Tom Craig 1941-6-29 s.n. Humboldt Samoa Comment
  CAS-BOT-BC172511  Clarkia purpurea subsp. quadrivulnera Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC172515  Clarkia purpurea subsp. quadrivulnera Alice Eastwood; John Thomas Howell 1937-6-22 4722 Humboldt Near Harris Comment
  UC183695  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1912-7-26 3831 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC172505  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1928-6-24 5293 Humboldt Horse Mountain Road near junction of Willow Creek Road 853 Comment
  UC1222851  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1950-6-15 18809 Humboldt n Harris (Fort Seward Ranch); Mail Ridge Comment
  UC314618  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1923-7-4 6527 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC673014  Claytonia cordifolia Joseph P. Tracy 1932-7-15 10583 Humboldt e of Corral Summit; Trinity Summit 1828 Comment
  HSC17708  Claytonia exigua subsp. glauca Elrid H. Spinas 1948-5-22 34 Humboldt Horse Mtn. Comment
  HSC17684  Claytonia perfoliata D. B. Bader 1963-2-17 36 Humboldt Second of the Clam Beach Lagoons W. of Hwy.101 Comment
  HSC26366  Claytonia perfoliata T. O. Osborne 1970-4-5 82 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  HSC17681  Claytonia perfoliata S. R. Johnson 1965-3-28 24 Humboldt 1 mi. N of Luffenholtz Beach Comment
  SEINET6903113  Claytonia perfoliata Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  UCD100844  Claytonia rubra subsp. depressa Linda M. Barker 1976-2-22 1316 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SD88533  Claytonia sibirica Darley F. Howe 1972-5-7 Humboldt Trinidad Comment
  UC162973  Claytonia sibirica Joseph P. Tracy 1911-6-4 3212 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  UC672987  Claytonia sibirica Joseph P. Tracy 1932-7-14 10536 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  UCD100886  Claytonia sibirica K. Esau 1934-5-8 s.n. Humboldt Redwood Highway, near Scotia. Comment
  UC418984  Claytonia sibirica H. E. Parks May 1930 742 Humboldt Upper Van Duzen River Comment
  HSC54022  Clintonia uniflora Griswold, Butler 1979-7-12 7181 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC1103461  Clintonia uniflora E. Ethel Tracy 1919-8-1 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1524 Comment
  JEPS6293  Collinsia grandiflora Joseph P. Tracy 1930-6-21 8781 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  JEPS25058  Collinsia grandiflora Joseph P. Tracy 1933-6-13 12572 Humboldt Hoopa Mountain; near summit on road from Hoopa westward to Blair's 1066 Comment
  UC41804  Collinsia grandiflora W. C. Blasdale 1896-6-8 Humboldt Graham's Comment
  HSC66827  Collinsia greenei M. A. Baker 1980-7-11 2808 Humboldt Near Red Mtn. 1433 Comment
  HSC49699  Collinsia linearis J. O. Sawyer 1977-7-3 3021 Humboldt At tish Tang at Tang Creek on Rd. S of Gorgan Hole Comment
  UC1011935  Collinsia linearis F. W. Pennell and J. P. Tracy 1940-7-7 26090 Humboldt w of Salyer (e slope of Grouse Mountain); Grouse Mountain 975 Comment
  UC26620  Collinsia linearis Harley P. Chandler Jun 1901 1294 Humboldt Hupa Indian Reservation near Hupa (between The Swag and Hupa); North Coast Ranges, Hupa Indian Reservation 304 Comment
  HSC81603  Collinsia rattanii Thomas W. Nelson, Jane P. Nelson 1980-5-25 5265 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  UC582458  Collinsia rattanii Joseph P. Tracy 1935-6-23 13994 Humboldt French Camp Ridge 1066 Comment
  UC582447  Collinsia torreyi var. wrightii Joseph P. Tracy 1935-7-28 14314 Humboldt Trinity Summit, Head of Devils Hole Head of Devils Hole; Trinity Summit, Head of Devils Hole 1828 Comment
  HSC73125  Collomia heterophylla M. A. Baker 1980-5-18 1306 Humboldt Near Black Mtn. 1006 Comment
  HSC36634  Collomia tracyi Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1907 Humboldt N side of Pine Mtn. Comment
  HSC74377  Collomia tracyi M. A. Baker 1980-6-28 2492 Humboldt Near Mad River Buttes 1445 Comment
  HSC45623  Comandra umbellata subsp. californica Diane L. Reed 1978-4-22 12 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC37858  Conium maculatum Peter Sorensen 1976-6-2 Humboldt Humboldt Bay, Woodley Island Comment
  UCR275122  Conium maculatum Charity A. Hartshorn 2016-4-24 19 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  UC1199442  Conyza canadensis Joseph P. Tracy 1939-8-5 16395 Humboldt along Van Duzen River (Dinsmore's) 737 Comment
  JEPS109236  Coptis laciniata Stephanie Puentes 2008-4-23 Humboldt Vicinity Larabee Valley, along Horse Creek about 1 mile upstream from Hwy 36. Comment
  UC1196211  Coptis laciniata Joseph P. Tracy 1915-8-2 4663 Humboldt Northern Coast Ranges, Mouht of Lawrence Creek Lawrence Creek; Northern Coast Ranges, Lawrence Creek 152 Comment
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Jan 22 2014
  UC160953  Coptis laciniata Joseph P. Tracy Jul 27 1908-Jul 30 1908 2729 Humboldt opposite Buck Mountain (Northern Coast Ranges, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC98642  Corallorhiza maculata Cara Witte 2008-7-11 883 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  JEPS64347  Corallorhiza maculata W. L. Jepson 1902-6-28 1947 Humboldt Hupa Rd Green Point Ranch (ridge) 914 Comment
  UC14966  Corallorhiza maculata Harley P. Chandler June, 1901 1395 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC45237  Corallorhiza maculata Thomas W. Nelson, Jane P. Nelson 1977-6-19 3516 Humboldt Trail above Alder Springs 1585 Comment
  HSC98347  Corallorhiza striata T. Jimerson, J. Pageau 1979-6-12 527 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  JEPS79876  Corallorhiza striata Joseph P. Tracy 1918-5-28 4935 Humboldt on slope below High Prairie (near Redwood Creek); Northern Coast Ranges 609 Comment
  HSC95574  Cordylanthus maritimus subsp. palustris Andrea Pickart 2002-7-19 177 Humboldt Arcata Marsh at end of I St. 0 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
  UC936241  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1949-8-4 18411 Humboldt Mud Springs Trinity Summit 1341 Comment
  HSC98916  Cordylanthus tenuis subsp. viscidus Cara Witte 2007-7-11 512 Humboldt National Forest 1. Approximately 1 mile south of intersection with 5N01. Near Spike Buck Mountain. 1591 Comment
  UC634835  Cornus nuttallii H. L. Mason 1928-7-14 4897 Humboldt E. Fork Eel R. near Garberville; E. Fork Eel R. Comment
  UCD117252  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC774995  Cornus sericea subsp. sericea Carl B. Wolf 1937-8-13 9251 Humboldt 11 mi. e. Hoopa Valley (on new rd. towards Trinity Summit); North Coast Range 1524 Comment
  UC1196903  Cornus sessilis Joseph P. Tracy 1941-3-26 16846 Humboldt Four-mile Creek near mouth of S. Fork Trinity R. 609 Comment
  UC249590  Cornus sessilis Joseph P. Tracy 1922-4-20 6040 Humboldt Three Creeks Northern Coast Ranges, Three Creeks 670 Comment
  UC1199211  Coronopus didymus Joseph P. Tracy 1901-7-31 1234 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 60 Comment
  HSC6682  Coronopus didymus Lincoln Constance 1934-6-18 902 Humboldt S Fork Eel River, border of N Dyerville Flat, near S Fork RR Station and PO Comment
  HSC93466  Cortaderia selloana Gordon Leppig 1998-10-26 1106 Humboldt Arcata, Bayside Rd. at Crescent Way 6 Comment
  UC1175128  Corylus californica P. C. Everett and E. K. Balls 1959-10-24 23956 Humboldt 4.7 mi S from Bluff Creek (Hwy 96 from Orleans to Weitchpec) 121 Comment
  UC1225940  Corylus californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, N slope; along Hookton road 9 Comment
  CAS-BOT-BC172849  Corylus cornuta subsp. californica Ynez Whilton Winblad 1941-6-27 s.n. Humboldt Between Eureka and Orick Comment
  CAS-BOT-BC180301  Corylus cornuta subsp. californica Joseph P. Tracy 1931-8-16 9611 Humboldt near Briceland 152 Comment
  CAS-BOT-BC180305  Corylus cornuta subsp. californica Carl D. Duncan 1920-9-27 s.n. Humboldt Hoopa Comment
  CAS-BOT-BC180311  Corylus cornuta subsp. californica L. B. Kildale 1926-3-26 1647 Humboldt near junction with highway, on old Fortuna road 15 Comment
  SEINET12034008  Corylus cornuta var. californica J. P. Tracy 1951-1 19624 Humboldt along Van Duzen at Blue Slide 91 Comment
  POM289379  Cotula coronopifolia Lyman Benson 1928-7-10 435 Humboldt Clam Beach, Trinidad. 15 Comment
  UC1223033  Cotula coronopifolia Joseph P. Tracy 1948-5-31 17986 Humboldt Robertson's Sheep Ranch halfway between Garberville and Harris; Robertson's Ranch 609 Comment
  UC1198827  Crassula connata var. subsimplex Joseph P. Tracy 1940-4-7 16528 Humboldt near Samoa on Humboldt 6 Comment
  RSA89624  Crataegus monogyna E. K. Balls, Percy C. Everett 1953-10-13 18652 Humboldt 1 mile N of Arcata along Hwy 101. 6 Comment
  CAS-BOT-BC290585  Crepis capillaris Doris K. Kildale 1927-6-25 3540 Humboldt Shelter Cove 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
  UC581730  Crepis occidentalis Joseph P. Tracy 1935-7-30 14387 Humboldt Salmon Summit; at top 2112 Comment
  UC1223025  Crepis pleurocarpa Joseph P. Tracy 1947-7-9 17846 Humboldt Horse Mountain; top 1432 Comment
  CAS-BOT-BC290909  Crepis setosa Henry M. Pollard 1948-8-8 s.n. Humboldt Between Orleans and Camp Creek Comment
  HSC5462  Crocidium multicaule D. H. Norris 1969-3-1 2272 Humboldt Along Trinity River at Norton Creek, ca. 4 mi. N of Hoopa 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
  HSC57201  Cryptantha affinis Griswold, Butler 1979-7-10 7107 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC58011  Cryptantha affinis G. L. Clifton 1979-7-31 11808 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC525607  Cryptantha affinis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8941 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC33754  Cryptantha leiocarpa A. Montalvo 1975-5-24 284 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  UC54746  Cryptantha leiocarpa Harley P. Chandler May 1901 1144 Humboldt Samoa North Coast Ranges, Humboldt Bay 3 Comment
  HSC57192  Cryptantha torreyana Griswold, Butler 1979-7-11 6945 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC73579  Cryptantha torreyana Gail Newton 1980-7-14 1479 Humboldt Near Last Chance Ridge. 1219 Comment
  UC1239649  Cryptantha torreyana Harold E. Parks and Joseph P. Tracy 1934-6-27 11058 Humboldt Grouse Mt. 1432 Comment
  JEPS39856  Cupressus lawsoniana Joseph P. Tracy 1926-6-27 7672 Humboldt Horse Mountain North Coast Ranges 1463 Comment
  SEINET10531493  Cupressus macrocarpa Fred G. Meyer 1938-4-7 Meyer 1397 Humboldt About 20 miles north of Eureka Comment
  UCSB24335  Cuscuta californica Tracy, Joseph 1930-7-16 Humboldt South Fork Mountain; openings in fir forest near McKay Camp 1676 Comment
  HSC44543  Cuscuta occidentalis Brad Klipfel 1973-7-15 162 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC198629  Cuscuta occidentalis Joseph P. Tracy 1916-9-6 4760 Humboldt headwaters of Canoe Creek Northern Coast Ranges, Grasshopper Ridge, Canoe Creek 609 Comment
  HSC104274  Cuscuta pacifica var. pacifica Samantha E. Andres 2016-5-29 16 Humboldt Salt Marsh Trail, Lanphere Dunes Unit 30 Comment
  HSC62883  Cuscuta salina J. M. DiTomaso 1979-5-20 1065 Humboldt Eureka Bay 3 mi. SW of Arcata on Samoa Rd. Comment
  BLMAR215  Cynoglossum grande Jennifer Anthony-Wheeler 1996-7-9 215 Humboldt Pilot ridge., growing in shaged area in woodland, primarily beneath Oregon Oak 1280 Comment
  UC525558  Cynoglossum grande Joseph P. Tracy 1927-6-12 8154 Humboldt lower slopes Horse Mt.; Northern Coast Ranges, Horse Mt. 1219 Comment
  HSC100403  Cynoglossum grande Carl C. Marshall May 1886 160 Humboldt Vicinity of Humboldt Bay. Comment
  HSC47794  Cynosurus echinatus Michael A. Watkins 1978-6-10 14 Humboldt Arcata, E side of 7th St. overpass to Hwy. 101 Comment
  BLMAR416  Cyperus eragrostis Jennifer Wheeler 2007-8-29 416 Humboldt South Spit, East side of road near bay 9 Comment
  SEINET200971  Cyperus erythrorhizos Joseph P. Tracy 1920-8-15 5364 Humboldt Klamath River at mouth of Bluff Creek. 152 Comment
  CDA18046  Cyperus esculentus R. Spadoni 1999-8-3 PDR 1170316 Humboldt 1400 Main, Ferndale. 0 Comment
  CDA36734  Cytisus scoparius Richard R. Halse 2010-3-25 7856 Humboldt Along U.S. Hwy 101 ca. 9.7 miles south of Orick. Comment
  HSC14667  Cytisus scoparius F. B. Plett 1963-4-24 32 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  HSC14670  Cytisus scoparius S. J. Hawks 1965-4-6 21 Humboldt Luffenholtz Beach Comment
  HSC9535  Dactylis glomerata R. H. Berg 1963-2-23 2 Humboldt Fickle Hill area, Arcata Comment
  CDA31640  Danthonia californica T. R. Haig 1960-6-19 Humboldt 2 miles south of Kneeland 0 Comment
  HSC58114  Danthonia californica G. L. Clifton, Griswold 1979-8-1 12073 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  CHSC35545  Danthonia californica var. californica James Payne Smith Jr. 1977-7-3 9231 Humboldt Road to Fish Lake (Forest Service Road 13N01), 3.5 miles from its junction with State Route 36. 487 Comment
  CHSC26758  Daucus carota M. S. Taylor 1977-8-5 1432 Humboldt Around bridge over Eeel River, at turnoff from Hwy 101 to Ferndale, in Fernbridge. Comment
  UC1197352  Daucus pusillus Joseph P. Tracy 1901-8-2 1248 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA304852  Delphinium decorum subsp. decorum James R. Shevock 1971-5-29 1137 Humboldt Trinity Hwy 299. 244 Comment
  HSC37654  Delphinium decorum subsp. tracyi Robert M. Specht, John Rehling 1976-4-25 395 Humboldt 12 mi. E of Bridgeville on Hwy. 36, at SE end of Larabee Valley Comment
  RSA79370  Delphinium decorum subsp. tracyi E. K. Balls, Lee W. Lenz 1952-5-12 17196 Humboldt 11.2 miles E along Hwy 36 from Bridgeville to Cobbs Comment
  HSC46067  Delphinium depauperatum R. C. Wunner 1962-5-6 Humboldt Denny Forest Service Campground Comment
  HSC56322  Delphinium glaucum Overton, Butler 1979-8-2 12662 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  SEINET12099544  Delphinium hesperium J. P. Tracy 1950-1 18875 Humboldt 3 mi N of Blocksburg Comment
  HSC89622  Delphinium nudicaule Pat Daly, Rudy Galindo 1988-3-12 5 Humboldt S Fork Trail of Trinity River, trailhead 12.4 mi. up S Fork Rd. from Hwy. 299 457 Comment
  POM299320  Delphinium trolliifolium Lester Rowntree 1938-6-4 s.n. Humboldt Stone Lagoon near Orick Comment
  SEINET10515745  Deschampsia cespitosa Mark Stopher 1980-6-4 Stopher 95 Humboldt Very common along Elk River near Hwy 101 bridge. Eureka Quadrangle 7.5', T4N R1W S4 SW1/4. 1 Comment
  HSC82970  Deschampsia cespitosa subsp. beringensis A. L. Eicher 1985-8-8 Humboldt Salt marsh bordering Elk River, 0.4 mi. NW of the Elk River bridge. 1 Comment
  UC552716  Deschampsia danthonioides Joseph P. Tracy 1935-6-23 13969 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC201769  Deschampsia elongata H. E. Parks 1931-5-1 3646 a Humboldt Big Lagoon Comment
  HSC58650  Deschampsia elongata G. L. Clifton 1979-7-31 11682 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC75510  Deschampsia elongata J. O. Sawyer, R. J. Cole 1977-7-3 3019 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  HSC97565  Deschampsia elongata Cara Witte 2007-6-7 223 Humboldt Along National Forest 1. Approximately 1 mile north of cattle guard. Comment
  RSA126941  Deschampsia elongata H. S. Yates 1936-6-17 5706 Humboldt Lower northwest slope of Buck Mountain 793 Comment
  UC38482  Deschampsia elongata Harley P. Chandler May, 1901 1175 b Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 54 Comment
  HSC8603  Deschampsia elongata D. W. C. 1956-5-29 13 Humboldt Mattole- Rio Del -Atwell Creek Comment
  JEPS9737  Dicentra formosa Joseph P. Tracy 1933-5-28 12414 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  UC1196309  Dicentra formosa Joseph P. Tracy 1921-3-13 5422 Humboldt Alton; Northern Coast Region 30 Comment
  HSC34639  Dicentra formosa David M. Brazelton 1975-4-10 6 Humboldt 150 yards SW of junction of Fieldbrook Rd. and Evans Rd. Comment
  HSC45489  Dicentra formosa Maralyn O'Meara 1972-6-8 99 Humboldt Along Bald Hills Rd., 18 mi. from junction with Hwy. 101 Comment
  HSC8354  Dicentra formosa D. E. Anderson 1962-3-24 1948 Humboldt Along Turner Rd. Comment
  RSA0056407  Dicentra formosa James R. Shevock 1971-5-29 1139 Humboldt Trinity Hwy, 229. 243 Comment
  CAS-BOT-BC402402  Dicentra formosa subsp. formosa Mrytle Paulson 1918-4-18 s.n. Humboldt Eureka Comment
  UC1116210  Dicentra uniflora Joseph P. Tracy 1942-6-23 17253 Humboldt near Water-dog Lakes (Trinity Summit); Trinity Summit 1828 Comment
  SEINET200695  Dichelostemma X venustum Joseph P. Tracy 1923-7-4 6524 Humboldt Valley of South Yager Creek 762 Comment
  UC709439  Dichelostemma X venustum Joseph P. Tracy 1941-5-4 16867 Humboldt Miranda, along the South Fork of Eel River South Fork of Eel River 121 Comment
  UC176352  Dichelostemma capitatum Joseph P. Tracy 1913-6-13 4102 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northen Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC95583  Dichelostemma capitatum subsp. capitatum Andrea Pickart 2002-5-13 99 Humboldt Lamphere Dunes, Humboldt National Wildlife Refuge Comment
  UC1950087  Dichelostemma capitatum subsp. capitatum Barbara Ertter with Thomas J. Delendick 1987-5-16 6927 Humboldt near seepage on N side of road; S-facing slope; Vista Point just W of Berry Summit on Hwy 299, ca 15 airmiles E of Arcata Comment
  UC1198163  Dichelostemma congestum Joseph P. Tracy 1914-5-14 4446 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UCSB13002  Dichelostemma ida-maia Muller, Katherine 1954-6-21 Humboldt Mad River Camp #2 on Mad River, below Ruth P.O. Comment
  HSC23712  Digitalis purpurea Tim Baroni 1971-6-25 60 Humboldt Comment
  UCD64093  Digitaria sanguinalis Joseph P. Tracy 1942-9-13 17316 Humboldt Eureka. 30 Comment
  SBBG6909  Diplacus aurantiacus M. J. Cody 1938-7-14 Humboldt Trinidad Head Comment
  CAS-BOT-BC153234  Diplacus kelloggii John Cromwell; Julie Schneider; Audie Thoele 1994-3-19 5 Humboldt Hell's Half Acre, trailhead located about 12 miles South of South Fork Road off of Hwy. 299 457 Comment
  UC30077  Disporum hookeri Harley P. Chandler May, 1901 1089 Humboldt North Coast Ranges 152 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
  UC1197653  Disporum smithii J. P. Tracy 1906-4-22 2417 Humboldt immediate vicinity of Eureka 0 Comment
  RSA20815  Disporum smithii Carl B. Wolf 1937-9-10 9313 Humboldt Along old logging road 2 miles E of Trinidad on way to Hammond Lumber Co. s Camp 20 (abandoned). 152 Comment
  UCD64176  Distichlis spicata A. H. Murphy 1950-8-1 Humboldt Ocean House area, Cape Mendocino. Comment
  HSC70347  Dodecatheon hendersonii M. A. Baker 1980-6-7 1815 Humboldt Near Brush Mtn. 1128 Comment
  HSC85760  Dodecatheon hendersonii R. Earing, C. Cavanaugh, C. Collins 1987-3-6 3 Humboldt Gray's Falls Campground, approx. 10 mi. E of Willow Creek on Hwy. 299, along the Trinity River. 244 Comment
  JEPS14697  Dodecatheon jeffreyi Joseph P. Tracy 1932-7-17 10669 Humboldt ridges e Corral Prairie (Trinity Summit); , e of Corral Prairie 1828 Comment
  UC602557  Downingia cuspidata Joseph P. Tracy 1935-5-25 13843 Humboldt Fort Seward 106 Comment
  UC562604  Draperia systyla Joseph P. Tracy 1935-7-31 14389 Humboldt Devil's Backbone; ridge connecting Trinity Summit and Salmon Summit 1524 Comment
  HSC39929  Draperia systyla J. O. Sawyer 1970-6-25 2301 Humboldt 1646 Comment
  SEINET6425013 Image available Drosera rotundifolia Mrs. Alma Bonstell 1912-1 Humboldt Christmas Prairie 914 Comment
  RSA0011668  Drosera rotundifolia C. B. Wolf 1934-7-2 5897 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  RSA0011669  Drosera rotundifolia Patricia Wilder 1968-8-21 4380 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  CAS-BOT-BC159614  Drymocallis glandulosa var. glandulosa Doris K. Kildale 1926-5-9 1993 Humboldt Kneeland Prairie 762 Comment
  UC492182  Drymocallis glandulosa var. wrangelliana Joseph P. Tracy 1927-5-30 8088 Humboldt Briceland Northern Coast Ranges, Briceland 182 Comment
  HSC32284  Drymocallis rhomboidea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5618 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  CAS-BOT-BC70872  Dryopteris arguta Doris K. Kildale 1928-12-30 6884 Humboldt Phillipsville Comment
  SD92987  Dryopteris expansa W. Bertsch 1953-7-30 216 Humboldt Duncan Grove, Redwood Forest Comment
  HSC6461  Dudleya farinosa D. E. Anderson 1961-9-2 1773 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  HSC45062  Dysphania botrys R. Sutherland 1976-8-13 15 .13876 Humboldt Redwood Creek, Whittemore Grove. 87 Comment
  BLMAR359  Echinochloa crus-galli Jennifer Anthony-Wheeler 2003-10-21 359 Humboldt Headwaters Forest Reserve, coming out of rice straw 487 Comment
  UC526835  Echinochloa muricata var. microstachya Joseph P. Tracy 1930-10-12 9209 Humboldt Eel River on gravel bars Alton to Fortuna; Northern Coast Region, Eel River 15 Comment
  HSC7305  Eleocharis acicularis J. P. Tracy 1934-7-13 13393 Humboldt Dow's Prairie 61 Comment
  RSA275279  Eleocharis acicularis var. acicularis Thomas W. Nelson, Jane P. Nelson 1977-7-4 3592 Humboldt Pond above Alder Springs 1585 Comment
  RSA53823  Eleocharis obtusa var. engelmannii Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  HSC7324  Eleocharis pachycarpa J. P. Tracy, H. E. Parks 1931-6-7 9569 Humboldt Trinidad 61 Comment
  HSC73057  Elymus X hansenii M. A. Baker 1980-7-23 3163 Humboldt Near Orleans Mtn. 1859 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
  HSC9695  Elymus condensatus J. Wendell Howe 1253 Humboldt Little River Beach Comment
  UC1103207  Elymus glaucus J. P. Tracy 1901-6-16 1143 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC9745  Elymus glaucus subsp. glaucus D. E. Anderson 1962-7-10 2249 Humboldt Luffenholtz Beach, about 2 mi. S of Trinidad along old Hwy. 101 Comment
  SEINET200979  Elymus glaucus subsp. glaucus J. P. Tracy 1936-6-9 14889 Humboldt Bear River Lodge 457 Comment
  HSC9726  Elymus mollis subsp. mollis J. W. Johnson 1962-4-29 1297 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  HSC9738  Elymus mollis subsp. mollis T. O. Preston 1963-5-6 21 Humboldt Sand dunes. Comment
  HSC70693  Elymus multisetus Gail Newton 1980-7-15 1560 Humboldt Near Sims Mtn. 1311 Comment
  UCD62495  Elymus multisetus A. H. Murphy 1951-6-13 64 Humboldt Along Eel River at Fort Seward. Comment
  SEINET200933  Elymus trachycaulus subsp. trachycaulus J. P. Tracy 1912-7-27 3885 Humboldt Kneeland prairie 762 Comment
  UC1103470  Elytrigia repens Joseph P. Tracy 1940-10-5 16751 Humboldt Trinidad; foot of coast bluff 6 Comment
  UCD117423  Empetrum nigrum subsp. hermaphroditum James Payne Smith Jr. 1975-3-31 8048 Humboldt Megwill Point on Elk Head, just north of College Cove. Comment
  CAS-BOT-BC392223  Enemion stipitatum Joseph P. Tracy 1935-5-5 13802 Humboldt Kneeland Prairie 822 Comment
  HSC35708  Epilobium brachycarpum Thomas W. Nelson, B. Reinhardt 1975-7-30 2117 Humboldt E of Pilot Rock Comment
  HSC32948  Epilobium ciliatum subsp. ciliatum Thomas W. Nelson, James Nelson 1973-5-28 958 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC48852  Epilobium ciliatum subsp. ciliatum Brad Klipfel 1973-7-15 211 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS39330  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1916-9-5 4768 Humboldt 4 mi above river mouth (i.e., near Weott); Northern Coast Ranges, South Fork of Eel River 60 Comment
  UCD105926  Epilobium ciliatum subsp. glandulosum J. M. Tucker 1948-9-3 1858 Humboldt Clear Lake, near junction of Friday Ridge Road and Horse Mountain-Grouce Mountain Road. Comment
  HSC98058  Epilobium densiflorum Cara Witte 2007-7-17 543 Humboldt White Oak Opening 1257 Comment
  JEPS31532  Epilobium densiflorum Lincoln Constance 1934-6-7 834 Humboldt Johnson Prairie South Fork Eel River, Bull Creek Region Comment
  HSC98733  Epilobium densiflorum Cara Witte 2007-8-9 633 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1584 Comment
  JEPS39329  Epilobium hallianum Joseph P. Tracy 1925-5-30 7046 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  UC1197013  Epilobium hornemannii subsp. hornemannii Joseph P. Tracy 1932-7-17 10689 Humboldt head of Devil's Hole Klamath Mountains, Trinity Summit 1828 Comment
  HSC54877  Epilobium lactiflorum G. L. Clifton, Griswold 1979-7-25 10869 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 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
  RSA21077  Epilobium minutum Carl B. Wolf 1937-8-13 9237 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC429313  Epipactis gigantea P. E. Goddard 1907-7-15 #b 125 Humboldt Van Duzen Mad River (sunny side of river) Comment
  HSC46090  Equisetum arvense J. P. Smith 1971-10-9 5014 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC61024  Equisetum arvense Jimerson, J. Pageau 1979-8-10 723 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  UC667934  Equisetum hyemale subsp. affine Joseph P. Tracy 1937-3-21 15234 Humboldt near Grizzly Creek Van Duzen River 91 Comment
  HSC54581  Equisetum telmateia subsp. braunii Overton, Butler 1979-7-24 9625 Humboldt Near Titlow Hill, close to the town of Willow Cr. 1250 Comment
  SJSU8164  Equisetum telmateia subsp. braunii R. D. Spadoni 1965-3-26 Humboldt Trinidad Comment
  POM118344  Equisetum telmateia var. braunii Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. 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
  UC249866  Eragrostis pectinacea var. pectinacea Joseph P. Tracy 1924-8-31 6835 Humboldt Klamath River at Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 91 Comment
  CAS-BOT-BC284097  Eragrostis pectinacea var. pectinacea Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  HSC5492  Erechtites glomeratus J. W. Johnson 1961-9-10 1112 Humboldt Arcata, S of Dune 3 N, Christenson Farm, Samoa Pennisula Comment
  HSC79514  Erechtites glomeratus Kenneth Clark 1980-4-18 597 Humboldt Shelter Cove, middle alluvial terrace, Dead Man's Gulch 43 Comment
  UC1198998  Eremocarpus setiger Joseph P. Tracy 1908-6 2851 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CDA5472  Erica lusitanica T. C. Fuller 1961-3-22 5938 Humboldt North slope, Humboldt Hill, Eureka. 0 Comment
  POM126125  Ericameria arborescens subsp. arborescens Joseph P. Tracy 1924-8-24 6827 Humboldt Trinity River Valley, near Willow Creek 183 Comment
  CAS-BOT-BC33468  Erigeron breweri var. klamathensis Joseph Prince Tracy 1937-7-24 15515 Humboldt Trinity Summit, 2 miles SE of Devil's Hole 1584 Comment
  CAS-BOT-BC296111  Erigeron foliosus var. confinis Joseph P. Tracy 1935-6-23 13967 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC296115  Erigeron foliosus var. confinis Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  UC165069  Erigeron foliosus var. confinis Joseph P. Tracy 1911-7-6 3353 Humboldt Mountain slopes along road between Three Creeks and mouth of Willow Creek 762 Comment
  UC34629  Erigeron foliosus var. mendocinus Chesnut and Drew 1888-7-10 Humboldt Mad River Comment
  CAS-BOT-BC300677  Erigeron foliosus var. mendocinus Doris K. Kildale 1925-7-19 1046 Humboldt Bridgeville 228 Comment
  HSC26355  Erigeron glaucus T. O. Osborne 1970-9-16 32 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC90474  Erigeron glaucus Jean Hanson 1980-8-28 122 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka. W end of island between dikes. Comment
  HSC90479  Erigeron glaucus Jean Hanson 1980-8-28 121 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka. W end of island between dikes. Comment
  POM56121  Erigeron inornatus var. biolettii Joseph P. Tracy 1918-7-6 5052 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  HSC58174  Erigeron klamathensis G. L. Clifton, Griswold 1979-8-2 12255 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  JEPS41380  Erigeron philadelphicus var. philadelphicus Lincoln Constance 1934-5-26 685 Humboldt s end Dyerville Bridge; South Fork Eel River 45 Comment
  UC1223011  Erigeron robustior Joseph P. Tracy 1942-7-4 17371 Humboldt 2 mi w McClellan House (at Camp Desparation near the old Sweany place); McClellan Mountain 609 Comment
  HSC48395  Eriodictyon californicum Brad Klipfel 1973-6-10 149 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55063  Eriogonum compositum G. L. Clifton, Griswold 1979-7-31 11625 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC418996  Eriogonum latifolium H. E. Parks 1924-8-5 2454 Humboldt sand dunes, Little River lagoon Little River lagoon Comment
  UC1198148  Eriogonum latifolium Joseph P. Tracy 1913-9-21 4410 Humboldt Ocean Beach at Humboldt Bay Humboldt Bay Comment
  CDA30223  Eriogonum nudum M. K. Beyers, I. Shepardson 2009-9-13 259 Humboldt Roadside, in a shallow turn-out along State Route 254 (Avenue of the Giants). 0 Comment
  UC54704  Eriogonum nudum var. nudum Harley P. Chandler June, 1901 1491 Humboldt Klamath River North Coast Ranges, Klamath River 304 Comment
  UC775037  Eriogonum nudum var. nudum Carl B. Wolf 1937-8-13 9231 Humboldt 8 mi e on New Road towards Trinity Summit Hoopa Valley; North Coast Range 1219 Comment
  UCR32155  Eriogonum nudum var. nudum David J. Keil 1983-7-1 17272 Humboldt North Coast Range, Bull Creek Flats [Mattole] Road, c. 13 mi. west of junction with US Hwy 101 Comment
  HSC97941  Eriogonum nudum var. oblongifolium Cara Witte 2007-7-2 394 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1406 Comment
  UC205641  Eriogonum roseum Joseph P. Tracy 1919-9-13 5191 Humboldt Trinity River near Willow Creek - Northern Coast Ranges, Trinity River Comment
  CAS-BOT-BC267970  Eriogonum umbellatum var. argus Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1676 Comment
  CDA22681  Eriogonum umbellatum var. nelsoniorum L. P. Janeway, B. Castro 1996-8-4 5060 Humboldt High North Coast Ranges; Along Titlow Hill Road (Road #1) about 0.3 mile west of the spur road to top of Horse Mountain. Comment
  HSC32550  Eriogonum umbellatum var. nelsoniorum Thomas W. Nelson 1973-7-10 1032 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  UC1198157  Eriogonum umbellatum var. nelsoniorum Joseph P. Tracy 1932-7-12 10459 Humboldt Head of Brett Hole Trinity Summit, Brett Hole 1828 Comment
  HSC76554  Eriogonum umbellatum var. polyanthum Teresa Prendusi 1981-7-24 517 Humboldt Near Whiteys Peak 1634 Comment
  CAS-BOT-BC262322  Eriogonum vimineum F. D. Douthitt 1916-10-1 40 Humboldt Burned area - Snow Mt. Allotment Comment
  HSC5590  Eriophyllum lanatum Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  CAS-BOT-BC301020  Eriophyllum lanatum var. achilleoides L. Constance 1933-5-21 E 34 Humboldt Cliffs along the South Fork of the Eel River, 1 mile north of Garberville Comment
  HSC67897  Eriophyllum lanatum var. arachnoideum J. P. Smith 1973-5-26 6839 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC91916  Eriophyllum lanatum var. arachnoideum E. Mackey 1986-7-21 Humboldt Patrick's Point State Park; Wedding Rock Trail Comment
  UC129581  Eriophyllum lanatum var. arachnoideum Harley P. Chandler May 1901 1093 Humboldt Scotia North Coast Ranges, Humboldt Bay, Scotia 60 Comment
  UC165841  Eriophyllum lanatum var. arachnoideum Joseph P. Tracy 1906-7-15 2539 Humboldt Table Bluff Northern Coast, Region about Humboldt Bay, Table Bluff 0 Comment
  UC535728  Eriophyllum lanatum var. arachnoideum Eleanor Armstrong 1934-8-30 1180 Humboldt creek bed Richardson Grove 121 Comment
  CAS-BOT-BC301685  Eriophyllum lanatum var. lanceolatum Joseph P. Tracy 1933-8-6 12936 Humboldt French Camp Ridge 1066 Comment
  UC1198963  Erodium botrys Joseph P. Tracy 1913-6-27 4353 Humboldt McClellan Mt., on the Sweasey place Northern Coast Ranges 609 Comment
  UCR39816  Erodium botrys L. P. Janeway 1984-5-13 771 Humboldt Kneeland/Bridgefield Road c. 5 mi. east of the Kneeland Post Office 762 Comment
  UC1198966  Erodium brachycarpum Joseph P. Tracy 1926-3-14 7387 Humboldt Yager Creek Northern Coast Ranges, Carlotta 60 Comment
  HSC26363  Erodium cicutarium T. O. Osborne 1970-5-24 87 Humboldt Flat-iron Rock, 3/4 mi. NW Trinidad Lighthouse Comment
  HSC8498  Erodium cicutarium Elrid H. Spinas 1948-5-15 14 Humboldt Horse Mtn. Comment
  UC183565  Eryngium aristulatum var. aristulatum Joseph P. Tracy 1912-7 3777 Humboldt Alton Northern Coast Region, Alton 30 Comment
  CAS-BOT-BC41574  Erysimum capitatum S. K. Harris 1936-6-20 3493 Humboldt Above Van Duzen River about 3 miles west of Bridgeville. Comment
  CAS-BOT-BC41570  Erysimum capitatum Doris K. Kildale 1926-3-21 1578 Humboldt Knuland Prairie. 853 Comment
  HSC54208  Erysimum capitatum var. capitatum Terry Griswold, Marvin Butler 1979-7-12 7251 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC6787  Erysimum menziesii J. R. Woodside 1963-3-10 40 Humboldt 1.25 mi. N of Fairhaven. Comment
  HSC6789  Erysimum menziesii J. W. Johnson 1962-4-1 1414 Humboldt Samoa Peninsula, in a hollow behind the foredunes, near Dune 5, Christenson Farm. Comment
  UC1034752  Erysimum menziesii G. B. Rossbach 1955-6-10 596 Humboldt depression in coastal dunes near Humboldt Bay lighthouse (betw. Fairhaven and end of sandy point off Eureka) Comment
  CAS-BOT-BC383041  Erythranthe grandis David B. Lowry 2005-5-16 GBM Humboldt Along Gold Bluffs Road between Ranger Kiosk and Fern Canyon 11 Comment
  JEPS505  Erythronium californicum Joseph P. Tracy 1938-6-13 15896 Humboldt Horse Mountain 1432 Comment
  UC666962  Erythronium grandiflorum Joseph P. Tracy 1930-7-18 9037 Humboldt openings in forest near McKay Camp; South Fork Mountain 1676 Comment
  HSC38258  Erythronium revolutum Thomas W. Nelson 1976-4-3 2283 Humboldt Hwy 36 at east end of Swain's Flat Comment
  UC146199  Erythronium revolutum Ethel Tracy 1907-5-4 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC403033  Eschscholzia californica L. R. Abrams 1916-7-11 6058 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  UC146086  Eschscholzia californica Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  SEINET12102668  Eschscholzia californica J. P. Tracy 1950-1 18750 Humboldt Cape Mendocino. Sandy places at "Devil's Gate." S of point of the Cape 30 Comment
  HSC58379  Eucephalus ledophyllus Terry Griswold 1979-7-25 10759 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1814 Comment
  UC1199298  Eucephalus tomentellus Joseph P. Tracy 1930-7-19 9083 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC552255  Euchiton gymnocephalus Joseph P. Tracy 1936-3-22 14784 Humboldt 4 mi se Korbel (near Angels Ranch); North Coast Ranges 304 Comment
  CAS-BOT-BC310490  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  JEPS20476  Euchiton sphaericus Joseph P. Tracy 1936-8-24 15176 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  HSC100481  Euphorbia dictyosperma Carl C. Marshall Jun 1887 431 Humboldt Perrington Creek on rocks. Comment
  CDA4817  Euphorbia helioscopia W. Simas 1962-12-4 Humboldt Fisher property, Island School Road, Ferndale. 0 Comment
  HSC34947  Euphorbia peplus Dryden 1975-4-20 124 Humboldt Yard 0 Comment
  UC198587  Eurybia radulina Joseph P. Tracy 1917-9-2 4843 Humboldt Grouse Mountain 1524 Comment
  UC180190  Eurybia radulina Joseph P. Tracy 1914-9-6 4619 Humboldt Bald Mountain, between High Prairie and Snow Camp Bald Mountain 1066 Comment
  UCD98912  Fallopia sachalinensis H. E. Parks; S. T. Parks 1952-6-1 24448 Humboldt South of the Elk River Bridge on Highway 10. Comment
  UC34070  Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt immediate vicinity Eureka 0 Comment
  UC53434  Festuca californica unknown 1896-6-9 Humboldt South Fork Mts. Northern Coast Ranges Comment
  HSC9852  Festuca californica D. C. Juve 1964-5-16 36 Humboldt Campbell Cr. Ranger Station. Hwy. 96. Hillside above Trinity River Comment
  CAS-BOT-BC278304  Festuca californica subsp. californica L. R. Abrams 1918-6-15 7126 Humboldt Brannan Mt near Willow Creek 1371 Comment
  CAS-BOT-BC282501  Festuca elmeri H. S. Yates 1936-6-17 5690 Humboldt South Fork Peak, lower N.W. slope of Buck Mtn. 792 Comment
  HSC32216  Festuca idahoensis J. O. Sawyer 1970-6-24 2229 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  RSA728074  Festuca idahoensis Gary D. Wallace 1979-6-24 1862 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek. 1216 Comment
  UC1103728  Festuca idahoensis Joseph P. Tracy 1921-5-30 5485 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC38531  Festuca occidentalis Harley P. Chandler May 1901 1186 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC278967  Festuca rubra H. S. Yates 1936-6-17 5697 Humboldt Lower northwest slope of Buck Mountain 792 Comment
  RSA152482  Festuca rubra Joseph P. Tracy 1950-6-17 18838 Humboldt At Eureka. Comment
  UC1145215  Festuca rubra Joseph P. Tracy 1950-6-17 18838 Humboldt Eureka 3 Comment
  UCD66389  Festuca rubra Thomas Nelson; Jane Nelson 1976-7-26 3024 Humboldt Trinity - Humboldt County line: Road 1S07 west of Black Lassic. 1615 Comment
  CAS-BOT-BC282515  Festuca subbiflora W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River Comment
  UC277198  Festuca subulata Joseph P. Tracy 1921-6-4 5812 Humboldt Alton Northern Coast Region 30 Comment
  UCD66438  Festuca subulata Joseph P. Tracy 1937-7-25 15541 Humboldt Trinity Summit, Head of Little Hors-Linto Creek. 1371 Comment
  UC53425  Festuca subuliflora Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5407 Humboldt Hubbards Station Comment
  UCD113170  Fragaria ananassa subsp. cuneifolia Linda M. Barker 1976-6-14 1590 Humboldt 3 miles west of Arcata. Comment
  UC1198725  Fragaria chiloensis Joseph P. Tracy 1918-4-21 4875 Humboldt Dows Prairie Northern Coast Ranges 60 Comment
  HSC18615  Fragaria vesca J. J. Wagoner 1965-5-1 25 Humboldt 6 mi. W of Willow Creek along Hwy. 299 Comment
  JEPS44683  Fragaria vesca Lincoln Constance 1934-6-8 841 Humboldt Cow Creek fire trail South Fork Eel River, Bull Creek Region (from Bull Creek road, n over divide into the headwaters of Bear Creek) Comment
  UC183556  Fragaria vesca Joseph P. Tracy 1913-6-25 4340 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CAS-BOT-BC52743  Frangula californica subsp. californica Doris K. Kildale 1927-7-3 3653 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC59993  Frangula purshiana Doris K. Kildale 1928-7-1 5304 Humboldt French Camp on Orick-Martin's Ferry Road. Comment
  HSC31511  Frangula purshiana Steve Selva, Roger Jensen 1974-8-21 29 Humboldt Redwood Forest across from Hwy. 101 entrance to Patrick's Point State Park Comment
  HSC89485  Frangula purshiana P. A. Daly 1984-5-13 19 Humboldt Along trail at Trinidad Head 61 Comment
  CAS-BOT-BC217695  Fraxinus latifolia Doris K. Kildale 1926-4-18 1783 Humboldt Bridgeville 228 Comment
  HSC15543  Fritillaria affinis A. H. Teshima 1963-5-8 34 Humboldt Moonstone Beach area Comment
  HSC15546  Fritillaria affinis F. B. Plett 1963-5-15 49 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  HSC97504  Fritillaria affinis C. Witte 2007-5-22 81 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  SEINET12050370  Fritillaria affinis F. H. Utech 1988-1 88 -285 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, Mile Marker 42.00, bluff above Van Duzen River 800 Comment
  UC672864  Fritillaria affinis Joseph P. Tracy 1940-5-17 16549 Humboldt McClellan Mountain 762 Comment
  CDA42402  Fuchsia R. Robison 2014-5-5 s.n. Humboldt Trinidad State Beach, west of Trinidad and near Ewing Street access area. 0 Comment
  HSC100105  Fumaria capreolata J. P. Smith 2010-4-7 12724 Humboldt Along Fischer Rd., S of junction with School Rd. in McKinleyville 8 Comment
  UC602525  Galium ambiguum var. siskiyouense Joseph P. Tracy 1925-5-30 7026 Humboldt Laribee Valley Northern Coast Ranges 731 Comment
  UC1196099  Galium bifolium Joseph P. Tracy 1939-7-9 16331 Humboldt Snow Camp 1402 Comment
  JEPS6702  Galium bolanderi Chesnut and Drew July 1888 Humboldt S. Fork Mt. Comment
  JEPS52855  Galium californicum subsp. californicum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3864 Humboldt 4.2 mi e Garberville (on road to Harris, at crest of ridge) 640 Comment
  SEINET10876857  Galium californicum subsp. californicum J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13009 Humboldt Leggett; Redwoods River Resort, 75000 Highway 101. Comment
  UC1196106  Galium californicum subsp. californicum Joseph P. Tracy 1942-5-16 17329 Humboldt along river half way between Miranda and Garberville; S. Fork Eel River 121 Comment
  HSC71828  Galium grayanum var. grayanum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5958 Humboldt Saddle E of Mt. Lassic 1677 Comment
  JEPS21476  Galium muricatum Francia Chisaki and Gene B. Newcomb 1958-6-23 1164 Humboldt on road to Shelter Cove 4 mi e of its junction with road to Ettersburg; on road to Shelter Cove 579 Comment
  JEPS14011  Galium parisiense Roxana S. Ferris 1955-7-11 12972 Humboldt betw. Willow Creek and Blue Lake (summit of US Hwy 299) Comment
  JEPS6495  Galium parisiense Joseph P. Tracy 1911-7-4 3278 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  UC1173701  Galium parisiense Joseph P. Tracy 1939-8-5 16378 Humboldt Dinsmore's 731 Comment
  JEPS52748  Galium porrigens var. porrigens Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3863 Humboldt 4.2 mi n Redway (along US 101, w-facing slope above Eel River) 91 Comment
  UC196077  Galium trifidum Joseph P. Tracy 1900-9-3 941 Humboldt Eureka Northern Coast Region 0 Comment
  SD88387  Galium trifidum subsp. columbianum Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  HSC40955  Galium triflorum Linda M. Barker 1976-7-5 1649 Humboldt 3 mi. W of Arcata. Comment
  UC1143113  Galium triflorum H. L. Person 1931-7-30 27 Humboldt Fieldbrook Eureka Quadrangle Comment
  JEPS6536  Galium triflorum W. L. Jepson 1902-6 1957 Humboldt Redwood Creek Comment
  CAS-BOT-BC303396  Gamochaeta ustulata M. S. Jussel 1931-5-2 s.n. Humboldt Near Garberville Comment
  HSC48772  Gamochaeta ustulata Brad Klipfel 1975-5-22 614 Humboldt Near the city of Eureka airport S of Samoa Comment
  CAS-BOT-BC200578  Garrya buxifolia Carl B. Wolf 1927-8-28 1169 Humboldt Lord Ellis Road to Blue Lake, 9 mi. from Willow Creek, 2 mi. from summit Comment
  HSC41344  Garrya buxifolia Brad Klipfel 1974-9-17 577 Humboldt Horse Mtn. Comment
  CAS-BOT-BC188538  Garrya elliptica Doris K. Kildale 1926-8-25 2550 Humboldt Mouth of Luffenholtz Creek near Trinidad Comment
  CAS-BOT-BC188539  Garrya elliptica Alice Eastwood 1923-8-14 12321 Humboldt Samoa Comment
  HSC22830  Garrya elliptica Gene S. Van Horn 1963-1-5 35 Humboldt On W.M. Lanphere's ranch 9 Comment
  HSC62874  Garrya elliptica J. M. DiTomaso 1979-5-20 1059 Humboldt Above College Cove at Elks Head, 1 mi. N of Trinidad. Comment
  UC1196883  Garrya elliptica J. P. Tracy 1901-2-22 993 Humboldt immediate vicinity Eureka 0 Comment
  UC1196886  Garrya elliptica Joseph P. Tracy 1921-1-23 5413 Humboldt near Lindsay Creek (hillside on Mad River); Northern Coast Region 30 Comment
  CAS-BOT-BC182171  Garrya fremontii Doris K. Kildale 2957 Humboldt McDowell Buttes near Kneeland 914 Comment
  HSC97975  Garrya fremontii Cara Witte 2007-7-8 425 Humboldt Board Camp Mountain. Pack trail 4N26. 1/2 mile from Tri Board Camp intersection. 1536 Comment
  UC630638  Garrya fremontii Joseph P. Tracy 1939-9-10 16499 Humboldt Willow Creek; Trinity River Valley 152 Comment
  CHSC27317  Gaultheria shallon T. B. Devine 1977-8-20 458 Humboldt Kneeland Road, 1 mi n of Kneeland. 548 Comment
  HSC22525  Gaultheria shallon Wm. F. Bowman 1968-10-26 Humboldt Big Lagoon County Park, SW corner of Big Lagoon. Comment
  HSC23141  Gaultheria shallon Norman Dennis 1965-6-19 125 Humboldt 0.25 mi S and 1.0 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  HSC59210  Gaultheria shallon Terry Roth 1979-5-29 103 Humboldt Arcata, entrance to the Canyon Dorms of Humboldt State University Comment
  RSA1367  Gaultheria shallon E. R. Johnson 1929-08 612 Humboldt Eel River. 91 Comment
  RSA249504  Gaultheria shallon R. F. Thorne, Percy C. Everett 1965-8-9 35287 Humboldt Big Lagoon. 3 Comment
  HSC55274  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-8-2 12663 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  JEPS27564  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9051 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  JEPS27607  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9069 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC58091  Gentiana plurisetosa G. L. Clifton, Griswold 1979-8-1 12004 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC902032  Gentiana sceptrum Joseph P. Tracy 1949-8-11 18457 Humboldt Snow Camp 1402 Comment
  UC1197400  Geranium carolinianum Joseph P. Tracy 1912-6-30 3712 Humboldt Eureka, at the Stephen Hill place Northern Coast Region 0 Comment
  UC1541358  Geranium molle Harold E. Parks May 1934 4323 Humboldt Spruce Cove Trinidad Comment
  UC668044  Geranium molle Joseph P. Tracy 1933-5-19 12197 Humboldt Alton to Fortuna (along the Eel River); Eel River 15 Comment
  HSC45990  Gilia capitata J. P. Smith 1973-5-26 6816 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SEINET6969928  Gilia capitata Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  UC52441  Gilia capitata subsp. capitata Harley P. Chandler June, 1901 1521 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  JEPS69517  Gilia capitata subsp. capitata Lincoln Constance 1934-5-23 621 Humboldt sw slope upper end Look Prairie (South Fork Eel River, Bull Creek Region); Bull Creek Region, South Fork Eel River, Look Prairie 365 Comment
  HSC95157  Gilia capitata subsp. pacifica Gordon Leppig 2003-6-25 1990 Humboldt E side headwaters of Brushy Creek 800 Comment
  HSC104345  Gilia capitata subsp. pacifica James Regan, Humboldt Redwood Co., LLC 2004-6-3 4 Humboldt Kneeland, near Kneeland Airport 854 Comment
  BLMAR597  Gilia millefoliata Jennifer Wheeler 2010-5-11 597 Humboldt Samoa Peninsula, Samoa Dunes Engangered Plant Protection Area 3 Comment
  CAS-BOT-BC225469  Gilia millefoliata Bolemanson 1907-5-15 s.n. Humboldt Samoa Comment
  HSC95545  Gilia millefoliata Andrea Pickart 2002-5-13 101 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  UC1602182  Githopsis specularioides Harley P. Chandler Jun 1901 1345 Humboldt Hupa Reservation North Coast Ranges 152 Comment
  HSC93526  Glehnia littoralis subsp. leiocarpa Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-6 748 Humboldt Dry Lagoon State Park, between ocean and Dry Lagoon 2 Comment
  UC1197364  Glehnia littoralis subsp. leiocarpa Joseph P. Tracy 1938-7-15 16077 Humboldt mouth of Eel River 6 Comment
  UCD127514  Glehnia littoralis subsp. leiocarpa Linda M. Barker 1976-6-22 1626 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA550922  Glyceria declinata R. F. Thorne, P. Everett 1965-8-9 35331 Humboldt Clam Beach County Park: along highway. 3 Comment
  HSC93744  Glyceria fluitans Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-25 791 Humboldt Arcata, Alder Grove Pond 18 Comment
  HSC98131  Glyceria striata Cara Witte 2007-6-27 376 Humboldt Forest Service Road 6N08. Friday Ridge Road. Approximately 2 miles south of intersection with 5N09. 1474 Comment
  UC526902  Glyceria striata Joseph P. Tracy Jul 16 1930-Jul 19 1930 8932 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain (South Fork Mountain) 152 Comment
  CAS-BOT-BC302538  Gnaphalium palustre H. E. Parks; S. T. Parks 1937-7-1 24026 Humboldt Spruce Cove, Trinidad Comment
  CAS-BOT-BC302539  Gnaphalium palustre H. E. Parks; S. T. Parks 1937-7-1 24026 Humboldt Spruce Cove, Trinidad Comment
  HSC39053  Gnaphalium palustre Linda M. Barker 1976-7-5 1639 Humboldt 3 mi. W of Arcata, coastal forest and dunes. Comment
  JEPS34040  Gnaphalium palustre W. L. Jepson 1936-8-17 17919 a Humboldt 2 mi s of Field's Landing (near Still's Ranch, marsh) Comment
  HSC49136  Gnaphalium palustre R. Becking 1979-7-29 Humboldt Van Duzen River at Cheatam Grove E of Carlotta Comment
  SEINET10474256  Gnaphalium purpureum Mary Susan Taylor 1977-8-2 Taylor 1426 Humboldt In mountains above and east of Eureka. Comment
  CDA20601  Gnaphalium ramosissimum B. Freeman 2005-10-25 PDR 1368985 Humboldt Klamath Ranges; Tully Creek Rd, Weitchpec. 0 Comment
  POM224403  Gnaphalium sphaericum J. T. Howell 1936-8-29 12888 Humboldt Eel River 16 miles N of Garberville. Comment
  RSA167297  Gnaphalium thermale Joseph P. Tracy 1950-9-22 19376 Humboldt Klamath River near Slate Creek; below Orleans 8 miles. 122 Comment
  SEINET8726302 Image available Godetia quadrivulnera C. C. Harris, S. K. Harris, J. P. Tracy 1942-1 s.n. Humboldt 7 miles north and 5 miles east of Willow Creek 165 Comment
  UC1196372  Goodyera oblongifolia Joseph P. Tracy 1932-7-17 10660 Humboldt near Corral Prairie (Trinity Summit); Trinity Summit 1584 Comment
  UC14959  Goodyera oblongifolia Ethel Tracy 1900-7-26 908 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  HSC98225  Goodyera oblongifolia A. M. Montalvo, J. D. Ackerman 1974-7-17 374 Humboldt About 7 mi. E of Carlotta, off Hwy. 36. Redwood Grove, E of Van Duzen Grove County Park. Van Duzen River Valley. 61 Comment
  UC179960  Goodyera oblongifolia Joseph P. Tracy 1914-8-30 4595 Humboldt Ocean Beach at Humboldt Bay, Northern Coast Region Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC1222817  Gratiola ebracteata Joseph P. Tracy 1951-6-21 Humboldt bed of former Goose Lake (Hydesville, back of the Everett Beck house (formerly George Gray's)); bed of former Goose Lake Comment
  CAS-BOT-BC304750  Grindelia hirsutula A. A. Heller 1924-7-21 13870 Humboldt At Eureka Comment
  CAS-BOT-BC304758  Grindelia hirsutula Carl B. Wolf 1937-9-9 9305 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 Comment
  CAS-BOT-BC304762  Grindelia hirsutula Carl B. Wolf 1937-9-9 9305 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 Comment
  HSC39104  Grindelia hirsutula J. D. Ackerman 1975-8-31 654 Humboldt Lanphere Rd., near Mad River Slough, Arcata Bottoms Comment
  HSC91913  Grindelia hirsutula E. Mackey 1986-12-18 Humboldt Patricks Point State Park; parking lot at Palmer's Point Comment
  RSA302649  Grindelia hirsutula J. R. Shevock 1972-3-27 1480 Humboldt Cape Mendocino. 46 Comment
  UC1118562  Grindelia hirsutula H. L. Person 1932-8-6 Humboldt slough between Arcata and Eureka; Eureka Quad. Comment
  CDA6159  Grindelia stricta var. platyphylla T. C. Fuller 1958-6-17 1719 Humboldt Maritime bluff above Oceanhouse, Cape Mendocino. 0 Comment
  UC201390  Guillenia lasiophylla Joseph P. Tracy 1918-5-1 4907 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC206137  Hackelia bella Joseph P. Tracy 1913-6-17 4174 Humboldt near the summit Buck Mountain; Northern Coast Ranges 1676 Comment
  RSA254793  Hackelia bella D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5571 Humboldt Westward lower slopes of Black Lassic near Trinity County line 1585 Comment
  JEPS35025  Helenium bigelovii Joseph P. Tracy 1930-7-16 8936 Humboldt at McKay Camp South Fork Mountain 1676 Comment
  CAS-BOT-BC306865  Helenium bolanderi Doris K. Kildale 1929-8-5 8773 Humboldt Big Lagoon Comment
  POM87954  Helenium bolanderi L. R. Abrams, R. C. Bacigalupi 1922-6-25 8261 Humboldt Between Trinidad and Big Lagoon Comment
  CAS-BOT-BC309412  Helenium puberulum Alice Eastwood 1921-7-21 10666 Humboldt Vanduzen [Van Duzen] River Comment
  BLMAR560  Helenium puberulum Jennifer Wheeler 2009-7-21 560 Humboldt Headwaters Forest Reserve, wet depression along trail north of Falk 60 Comment
  UC204746  Helminthotheca echioides Joseph P. Tracy 1918-7-1 4969 Humboldt southwestern slopes fronting the ocean three mi s of point Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  HSC34540  Hemitomes congestum Hap Ponedel 1975-9-20 Humboldt N side of Murray Rd, 1-2 mi. from Central Ave., McKinleyville, CA. Bulk Collection 83 Comment
  HSC45215  Hemitomes congestum Louise Watson, Mary Lou Schreiber 1978-9-29 Humboldt West side of summit, 1/4 mi. N. of McKinleyville-Fieldbrook Rd. Bulk Collection 137 Comment
  UC1368467  Hemizonella minima R. K. Gierisch 1969-7-1 3535 Humboldt Grouse Mtn. Six Rivers 1584 Comment
  JEPS12643  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1928-9-2 8494 Humboldt Dobbyn Creek Northern Coast Ranges 152 Comment
  UC1199372  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1934-7-9 13343 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC309981  Hemizonia congesta subsp. tracyi A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland Prairie Comment
  CAS-BOT-BC309985  Hemizonia congesta subsp. tracyi H. E. Parks; J. P. Tracy 1930-5-25 0880 Humboldt Near Bridgeville Comment
  CAS-BOT-BC309993  Hemizonia congesta subsp. tracyi S. K. Harris 1936-6-20 s.n. Humboldt Bluff above Van Duzen River about 1 mile west of Bridgeville Comment
  CAS-BOT-BC309994  Hemizonia congesta subsp. tracyi S. K. Harris 1936-6-20 s.n. Humboldt Bluff above Van Duzen River about 1 mile west of Bridgeville Comment
  RSA126141  Hemizonia tracyi Joseph P. Tracy 1923-7-4 6529 Humboldt Valley of South Yager Creek Comment
  UC673045  Heracleum lanatum Joseph P. Tracy 1940-9-26 16730 Humboldt s. end Humboldt Bay (Salmon Creek Valley); , Salmon Creek Valley 9 Comment
  UC1198757  Heteromeles arbutifolia Joseph T. Gregory 1935-12-21 Humboldt 4 mi n Willow Creek (Trinity River bluffs, at the Meitz Place); Trinity River 121 Comment
  CAS-BOT-BC311056  Heterotheca oregona var. oregona A. A. Heller 1924-7-20 13866 Humboldt Along the Eel River at Phillipsville Comment
  OBI76849  Heterotheca oregona var. rudis J. C. Semple & S. Heard, S. Heard 1986-8-18 8531 Humboldt Garberville. Gravel bar of S fork of Eel River near US 101 at Bear Cyn Rd Comment
  POM288698  Heterotheca oregona var. rudis Lyman Benson 1928-7-12 477 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  RSA93319  Heterotheca oregona var. rudis F. W. Peirson 1926-7-13 7051 Humboldt Near Blue Lake, Mad River Comment
  UC1557837  Heterotheca oregona var. rudis J. Semple and S. Heard 1986-8-18 8529 Humboldt near Myer's Flat (gravel bars of S. Fork Eel River at US-101); South Fork of Eel River Comment
  UC620692  Heterotheca oregona var. rudis S. K. Harris 1938-8-24 881 Humboldt near Fernbridge (sand of Eel River); Eel River Comment
  SBBG45062  Heterotheca sessiliflora subsp. bolanderi C. B. Wolf 1927-8-30 Humboldt 2 mi S of Petrolia on Mattole River near where road crosses river Comment
  HSC100650  Heuchera micrantha Carl C. Marshall Jun 1887 407 Humboldt Garberville. Comment
  HSC74559  Heuchera micrantha M. A. Baker 1980-7-11 2798 Humboldt Near Red Mtn. 1341 Comment
  UC1222390  Heuchera micrantha Joseph P. Tracy 1950-6-8 18716 Humboldt 2 mi s Ferndale (Wild Cat Road, at the Sand Cut) 304 Comment
  CAS-BOT-BC424195  Heuchera micrantha var. hartwegii Alice Eastwood 1907-4-21 s.n. Humboldt Trinidad, Light-house Point Comment
  HSC55843  Heuchera rubescens G. L. Clifton, Griswold 1979-7-25 10797 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  CAS-BOT-BC312399  Hieracium albiflorum L. R. Abrams 1918-6-16 7149 Humboldt Willow Creek Comment
  HSC31200  Hieracium albiflorum D. E. Anderson 1972-6-20 5745 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC81659  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1980-7-13 6066 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  HSC57935  Hieracium greenei G. L. Clifton, Griswold 1979-7-31 11587 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  POM360469  Hieracium greenei Thomas W. Nelson, Jane P. Nelson 1977-8-6 3714 Humboldt Along the lower south slope of Mt. Lassic (Signal Peak). 1494 Comment
  UC1103737  Hierochloe occidentalis Joseph P. Tracy 1934-7-9 13340 Humboldt 3 mi s Harris; Northern Coast Ranges 762 Comment
  CHSC31289  Holcus lanatus Mark Stopher 1980-7-11 116 Humboldt Along Elk River near Hwy 101 bridge. 1 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
  HSC26446  Holcus lanatus T. O. Osborne 1970-9-16 65 Humboldt Prisoner Rock, Trinidad Bay. Comment
  HSC47786  Holcus lanatus Michael A. Watkins 1978-6-10 7 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  SD51261  Holcus lanatus D. F. Howe 1961-8-1 Humboldt 9 miles north of Arcata on #101 Comment
  SEINET4585084  Holcus lanatus H. Parks, S. Parks 1943-1 24260 Humboldt North Coast Ranges, Spruce Cove, Trinidad. 61 Comment
  POM203237  Holcus lanatus M. S. Jussel 1931-5-2 s.n. Humboldt near Garberville Comment
  HSC90680  Holcus mollis Gail Newton 1982-6-10 3589 Humboldt Elk River Wildlife Area, Eureka Comment
  BLMAR753  Holodiscus discolor Jennifer Wheeler 2015-8-6 753 Humboldt King range, Strawberry Rock 189 Comment
  HSC18682  Holodiscus discolor H. E. Parks, S. T. Parks Jun 1927 257 Humboldt Hartsook 122 Comment
  HSC10163  Hordeum brachyantherum D. J. McVean 1965-5-22 85 Humboldt In field W of Jackson Rd., 1/4 mi N of Samoa Blvd. Comment
  UC552789  Hordeum marinum subsp. gussoneanum Joseph P. Tracy 1935-5-25 13866 Humboldt Fort Seward 106 Comment
  HSC103010  Hordeum murinum subsp. murinum J. P. Smith 2014-5-20 13852 Humboldt Samoa Peninsula 6 Comment
  CAS-BOT-BC536627  Horkelia californica Joseph P. Tracy 1949-7-7 18332 Humboldt Table Bluff Ridge 91 Comment
  UC1198711  Horkelia californica Joseph P. Tracy 1930-6-15 8755 Humboldt n Dobbyn Creek; Northern Coast Ranges 152 Comment
  HSC35867  Horkelia californica var. californica Thomas W. Nelson, James Nelson 1975-8-5 2127 Humboldt Beside rd. to Table Bluff 1.0 mi. W of Copenhagen Rd. Comment
  HSC99253  Hosackia oblongifolia var. oblongifolia Jimerson, J. Pageau 1979-8-10 717 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  HSC99466  Hosackia oblongifolia var. oblongifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 120 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC36320  Hosackia oblongifolia var. oblongifolia Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-20 1913 Humboldt USFS Rd. 2S08 to Pine Mtn. Comment
  SEINET957089  Hosackia rosea J. P. Tracy 1949-1 18321 Humboldt Undergrowth in woods near Boynton Prairie 12 miles southeast of Arcata; abundant especially in Tan Oak areas spreading by rootstocks. Comment
  CHSC68777  Hydrocotyle ranunculoides Vernon Oswald 1997-6-5 8545 Humboldt Robert Gearheart Marsh in the Arcata Marsh and Wildlife Sanctuary. 1 Comment
  UC1103413  Hydrocotyle ranunculoides Joseph P. Tracy 1940-10-5 16744 Humboldt mouth of Little River 3 Comment
  UC562601  Hydrophyllum fendleri var. albifrons Joseph P. Tracy 1932-7-15 10602 Humboldt ridges e Corral Prairie; Trinity Summit 1828 Comment
  HSC48869  Hydrophyllum occidentale Brad Klipfel 1973-6-10 51 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC13557  Hydrophyllum occidentale H. E. Parks, J. P. Tracy 1935-6-16 Humboldt Buck Mtn. Comment
  JEPS1642  Hydrophyllum tenuipes W. L. Jepson 1934-5-7 16691 Humboldt Bull Creek Comment
  HSC102581  Hypericum anagalloides M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1568 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC39621  Hypericum anagalloides Thomas W. Nelson, Jane Nelson 1976-6-15 2724 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC56966  Hypericum anagalloides Walter Overton, Butler 1979-7-23 9489 Humboldt Near Titlow Hill, close to the town of Willow Creek 1280 Comment
  HSC58119  Hypericum anagalloides G. L. Clifton, Griswold 1979-8-1 12088 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC668262  Hypericum anagalloides Joseph P. Tracy 1936-6-28 15029 Humboldt Lake Prairie at Bald Mt. 1066 Comment
  UC183760  Hypericum formosum var. scouleri Joseph P. Tracy 1913-7 4362 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  CAS-BOT-BC401236  Hypericum perforatum Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC57046  Hypericum perforatum Overton, Butler 1979-7-24 9695 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC668259  Hypericum perforatum Joseph P. Tracy 1937-4-3 15244 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  HSC36264  Hypericum perforatum John Rehling 1974-8-20 26 Humboldt Road leading to Alder Point Conservation camp 2 mi. from Hwy. 101 Comment
  UC204743  Hypochaeris radicata Joseph P. Tracy 1918-7-5 5022 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  HSC40966  Ilex aquifolium Linda M. Barker 1976-6-14 1594 Humboldt 3 mi. W of Arcata Comment
  UC909150  Ipomopsis aggregata Joseph P. Tracy 1932-7-12 10440 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC13865  Iris douglasiana J. J. Wagoner 1965-4-3 9 Humboldt 16 mi. N of Trinidad, W of Hwy. 101 in Dry Lagoon State Beach Park 24 Comment
  UCSB28085  Iris douglasiana Phelps, M. 1972-3-19 Humboldt 1.5 mi. from Garberville; along Old Briceland Rd; 0.5 mi. north of roadside 213 Comment
  HSC13853  Iris douglasiana J. C. Reppas 1963-3-16 1 Humboldt 820 Fickle Hill Rd. Comment
  HSC79519  Iris douglasiana Kenneth Clark 1980-3-1 519 Humboldt Middle terrace, Dead Man's Gulch, Shelter Cove 43 Comment
  JEPS17244  Iris douglasiana W. L. Jepson 1927-7-3 12360 a Humboldt Meyers Station Comment
  RSA40408  Iris douglasiana Philip A. Munz, Lee W. Lenz 1948-8-13 12350 Humboldt 8 miles east of Blue Lake, on Highway 299 305 Comment
  UC667113  Iris douglasiana Joseph P. Tracy 1933-5-20 12257 Humboldt Mattole Valley; Northern Coast Ranges 30 Comment
  UCD170782  Iris douglasiana Gordon Leppig 1998-5-7 752 Humboldt Quarry Rd. off Jacoby Creek. Road cut 50 m east of log pond. 97 Comment
  UC667116  Iris macrosiphon Joseph P. Tracy 1938-3-27 15700 Humboldt Miranda South Fork of Eel River (along South Fork of Eel River) 121 Comment
  UCD138785  Iris macrosiphon H. P. Olmo 1928-6-10 s.n. Humboldt Wooley Creek. Comment
  RSA134578  Iris purdyi Percy C. Everett, E. K. Balls 1959-10-26 23976 Humboldt 5.3 mi SE from Honeydew along old coast road to Ettersburg. 427 Comment
  UC275564  Iris purdyi Joseph P. Tracy 1924-7-4 6715 Humboldt Snow Camp; Northern Coast Ranges 1371 Comment
  SEINET12056923  Iris purdyi J. P. Tracy 1950-1 18950 Humboldt at "Friday Camp", Friday Ridge. Grouse Mountain 1219 Comment
  HSC65229  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-1 444 Humboldt 3.6 mi. N of Orleans on FS Rd. 15N01 Comment
  SEINET3875944  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 438 Humboldt On Ishi Pishi Road, 1.7 mi. south of intersection with Forest Road 11N11, Orleans.; 0 213 Comment
  SEINET12051377  Iris tenax subsp. klamathensis F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -314 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC35034  Iris tenuissima Thomas W. Nelson, James Nelson 1975-5-24 1856 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC67520  Iris tenuissima J. P. Smith, J. O. Sawyer 1973-5-12 6698 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  CDA14235  Isatis tinctoria R. Spadoni 1998-5-11 s.n. Humboldt Hwy 299 near Blue Lake. 0 Comment
  HSC61723  Isatis tinctoria Ruby Van Deventer 1963-7-1 Humboldt Along the Klamath River at Pecwan 238 Comment
  UC1152073  Isolepis carinata Joseph P. Tracy 1948-5-31 17982 Humboldt 1/2 mi ne Garberville (on the road to Harris); ne of Garberville Comment
  JEPS93173  Isolepis cernua Margriet Wetherwax and Kevin Downing 1993-8-9 2454 Humboldt s side of slough just past Pigeon Point (e side of road, near Bayside Rd and Myrtle, e side of bay, just n of Eureka); Humboldt Bay, Eureka Slough 5 Comment
  UC1115831  Isopyrum stipitatum Joseph P. Tracy 1939-4-2 16207 Humboldt Kneeland Prairie 762 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
  HSC85848  Juncus balticus subsp. ater L. P. Janeway 1983-9-24 699 Humboldt S side of Big Lagoon at county camp ground, 10-30 ft. from water line 3 Comment
  HSC38832  Juncus bolanderi R. Sutherland 1976-8-13 813876 Humboldt Whittemaore Grove at edge of forest 213 Comment
  RSA54121  Juncus bolanderi Henry M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  UCD170802  Juncus breweri Gordon Leppig 1998-6-14 833 Humboldt Mackerricher State Park. Ingelnook Fen just north of Fen. 6 Comment
  UC1152112  Juncus bufonius Joseph P. Tracy 1927-6-19 8197 Humboldt Big Lagoon Comment
  HSC63875  Juncus ensifolius M. A. Baker 1979-6-29 961 Humboldt Hopkins Creek 750 Comment
  UC1152105  Juncus exiguus Joseph P. Tracy 1930-7-17 8982 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC40877  Juncus hesperius Linda M. Barker 1976-6-1 1568 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC63849  Juncus laccatus M. A. Baker 1979-6-27 918 Humboldt Comment
  UC421840  Juncus mertensianus Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5787 Humboldt Trinity Summit North Coast Ranges Comment
  RSA246772  Juncus nevadensis var. inventus Robert F. Thorne, Percy C. Everett 1965-8-9 35312 Humboldt Big Lagoon. 3 Comment
  RSA126572  Juncus patens H. S. Yates 1936-6-23 5858 Humboldt 2 miles southeast of mouth of Mad River. 305 Comment
  UC162566  Keckiella lemmonii Joseph P. Tracy 1911-7-11 3504 Humboldt opposite Sugar Bowl Ranch (near Willow Creek, hill slopes at w side of Trinity River, opposite Sugar-bowl ranch); Northern Coast Ranges 304 Comment
  UC1196075  Kelloggia galioides Joseph P. Tracy 1932-7-13 10511 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  UC602548  Kelloggia galioides Joseph P. Tracy 1930-7-19 9081 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC885732  Kickxia elatine Carl D. Duncan 1920-9-22 Humboldt Hoopa Valley Comment
  HSC38432  Kickxia elatine J. P. Smith 1976-10-30 8997 Humboldt Mad River, E of Essex Lane exit. Comment
  UC205187  Kyhosia bolanderi Joseph P. Tracy 1919-9-18 5252 Humboldt meadow McKay; Trinity summit 1524 Comment
  UC479390  Lactuca biennis Marcus E. Jones, A. M. 1931-7-14 29090 Humboldt s Eureka Comment
  POM187943  Lactuca biennis Marcus E. Jones 1931-7-14 29090 Humboldt South of Eureka Comment
  UCD125067  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka. 45 Comment
  HSC14215  Lamium purpureum D. E. Anderson 1962-3-18 1945 Humboldt Corner of Hwy. 101 and Hwy. 299 Comment
  UC1199134  Lasthenia californica subsp. californica Joseph P. Tracy 1925-5-30 7050 Humboldt McClellan Mountain Northern Coast Ranges, McClellan Mountain 822 Comment
  CAS-BOT-BC213491  Lathyrus jepsonii subsp. californicus Alice Eastwood; John Thomas Howell 1937-6-23 4769 Humboldt Near Dinsmore's. Comment
  HSC62924  Lathyrus littoralis J. M. DiTomaso 1979-4-22 913 Humboldt Big Lagoon, 8 mi. N of Trinidad Comment
  RSA406671  Lathyrus littoralis Charlotte M. Hoak 1931-7-14 s.n. Humboldt Sand dunes above Eureka City. Comment
  JEPS64859  Lathyrus nevadensis var. nevadensis Harley P. Chandler Jun 1901 1290 Humboldt Hupa Indian Reservation North Coast Ranges 1097 Comment
  HSC14753  Lathyrus palustris J. P. Tracy 1907-7-20 2593 Humboldt Near Samoa Comment
  JEPS55333  Lathyrus palustris Joseph P. Tracy 1907-7-20 2593 Humboldt near Samoa (Region about Humboldt Bay, Northern Coast Region); Northern Coast Region 0 Comment
  UC1222413  Lathyrus polyphyllus Joseph P. Tracy 1951-6-16 19469 Humboldt 6 mi ne Hawkins Bar (on the Takilma-Happy Camp Road, near State Line); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC162867  Lathyrus polyphyllus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5355 Humboldt Bell Springs to Harris; North Coast Ranges Comment
  UCD106344  Lathyrus polyphyllus W. Williams 1951-1 s.n. Humboldt location unknown. Comment
  HSC14756  Lathyrus torreyi Lincoln Constance 1934-5-24 633 Humboldt S Fork Eel River, bordering lower Look Prairie on E. side 122 Comment
  UC931682  Lathyrus torreyi C. L. Hitchcock 1949-6-7 19084 Humboldt ca 15 mi e Blue Lake (along Highway 299) Comment
  BLMAR670  Lathyrus torreyi Jennifer Wheeler 2013-6-3 670 Humboldt Lacks Creek, West side near broom at end of road 701 Comment
  JEPS55357  Lathyrus vestitus var. ochropetalus Mrs. M. H. Manning 1900-1 Humboldt Hupa Valley Comment
  HSC59501  Lemna minor M. A. Ericksen 1979-5-29 308 Humboldt Northern-most of Clam Beach ponds Comment
  UC1101254  Lemna minuscula Malcolm A. Nobs, S. Galen Smith 1949-8-9 1237 Humboldt on s side of town of Blue Lake Blue Lake Comment
  HSC5926  Leontodon saxatilis subsp. saxatilis S. R. Johnson 1965-3-15 12 Humboldt 1 mi. N of Luffenholtz Beach Comment
  UC1199164  Lepidium nitidum Joseph P. Tracy 1933-5-20 12225 Humboldt 3 mi s point of Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  CAS-BOT-BC226527  Leptosiphon acicularis M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles N. of Garberville Comment
  CHSC42328  Leptosiphon androsaceus Victor Duran 1933-5-10 3403 Humboldt Near Blocksburg. Comment
  HSC22865  Leptosiphon androsaceus D. E. Anderson 1965-5-8 3636 Humboldt 4 mi. E of Berry Summit along Hwy. 299 Comment
  SBBG5980  Leptosiphon bicolor H. and M. Dearing 1939-5-24 3419 Humboldt pass, Dyerville to Mattole Rd, W of Panther Gap Comment
  RSA0096840  Leptosiphon filipes Joseph P. Tracy 1950-5-30 18710 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC12864  Leucojum aestivum D. La Conte 1970-11-17 17 Humboldt HSC campus, Arcata Comment
  SEINET197649 Image available Lewisia triphylla Joseph P. Tracy 1935-7-24 14178 Humboldt Trinity summit near Ranger Station 1830 Comment
  CAS-BOT-BC283512  Leymus X vancouverensis Joseph P. Tracy 1927-6-26 8214 Humboldt Stone Lagoon 6 Comment
  UC249795  Leymus mollis subsp. mollis Joseph P. Tracy 1923-5-19 6212 Humboldt Trinidad Northern Coast Ranges (ocean beach) 3 Comment
  POM160887  Leymus triticoides Joseph P. Tracy 1918-7-6 5063 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  UC1197172  Ligusticum apiifolium Joseph P. Tracy 1939-8-5 16379 Humboldt along Van Duzen R. below Dinsmore's; Van Duzen R. 762 Comment
  UC642246  Ligusticum apiifolium Joseph P. Tracy 1937-8-15 15666 Humboldt 4 mi. e. Orick (Gans Prairie); Gans Prairie 548 Comment
  HSC44546  Ligusticum californicum Brad Klipfel 1973-7-15 165 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC76407  Ligusticum californicum Teresa Prendusi 1981-7-24 456 Humboldt Near Whiteys Peak 1585 Comment
  HSC65840  Lilium bolanderi Gail Newton 1980-6-16 161 Humboldt Near Monks Camp. 1097 Comment
  CAS-BOT-BC508402  Lilium columbianum A. M. Vollmer; L. Beane 1951-7-1 s.n. Humboldt A few miles north of Arcata near U.S. Highway 101 Comment
  SEINET12057695  Lilium columbianum F. H. Utech 1978-6-30 78 -260 Humboldt ca 2.5 km S of Del Norte/Humboldt County line on US 101 Comment
  UC1035026  Lilium columbianum A. M. Vollmer and L. Beane Jul 1953 121 Humboldt Comment
  CAS-BOT-BC130647  Lilium kelloggii Albert M. Vollmer; Ira L. Wiggins 1940-7-4 6 Humboldt On Orick-Weitchpec road, 15 miles west of Weitchpec 944 Comment
  RSA74747  Lilium kelloggii Albert M. Vollmer, L. Beane 1951-06 s.n. Humboldt On road to Bald Mountain, east of Korbel Comment
  UC666951  Lilium pardalinum Joseph P. Tracy 1930-7-17 8999 Humboldt McKay Camp; South Fork Mountain 1676 Comment
  HSC56955  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-23 9465 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  HSC57043  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-24 9687 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC132967  Lilium rubescens Alice Eastwood; John Thomas Howell 1937-6-22 4730 Humboldt Near Alder Point Comment
  CAS-BOT-BC506199  Lilium vollmeri Peter H. Raven; R. Snow 1958-7-20 13641 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge Comment
  CAS-BOT-BC133014  Lilium washingtonianum subsp. purpurascens 1901-7-24 s.n. Humboldt Near Arcata Comment
  HSC15780  Limnanthes douglasii D. E. Anderson 1965-5-8 3634 Humboldt 4 mi. E of Berry Summit along Hwy. 299 Comment
  JEPS19583  Limnanthes douglasii Joseph P. Tracy 1933-5-20 12271 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  OBI12589  Limnanthes douglasii Lincoln Constance 1934-5-29 721 Humboldt S Fork Eel River. Upper Look Prairie 366 Comment
  UC275336  Limnanthes douglasii Joseph P. Tracy 1924-5-4 6667 Humboldt near Bridgeville; Northern Coast Ranges 304 Comment
  HSC17100  Limnanthes douglasii subsp. nivea William J. Ferlatte, B. D. Rogers 1966-6-15 2106 Humboldt Larabee Valley 762 Comment
  CDA20098  Limnobium laevigatum E. Finley 2003-3-27 PDR 1035513 Humboldt North Coast Ranges; Alder Grove Marsh, Arcata. 0 Comment
  SEINET7253531 Image available Limonium californicum Joseph P. Tracy 1901-1 1254 Humboldt At Samoa 1 Comment
  CDA39662  Limonium californicum T. C. Fuller 1961-9-27 7045 Humboldt 1 mile north of Indianola Road, Highway 101, 5 miles north of Eureka. 0 Comment
  UC52532  Linanthus bicolor J. P. Tracy 1902-7-4 1763 Humboldt immediate vicinity Eureka 0 Comment
  UC908238  Linanthus ciliatus Joseph P. Tracy 12923 Humboldt s slope Grouse Mountain (towards Grouse Creek Basin); North Coast Ranges 1219 Comment
  HSC20667  Linaria vulgaris H. E. Parks, S. T. Parks Aug 1943 22239 Humboldt Along Hwy., Stone Lagoon 15 Comment
  RSA0087552  Linnaea borealis subsp. longiflora Mrs. M. H. Manning 1901-06 108 Humboldt Trinity Summit. Comment
  UC1239560  Linnaea borealis var. longiflora Joseph P. Tracy 1936-6-28 15018 Humboldt Bald Mountain at Lake Prairie; Bald Mountain at Lake Prairie 1066 Comment
  RSA20849  Linum angustifolium Carl B. Wolf 1937-6-18 8889 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  HSC15798  Linum bienne Gerald T. Rood 1962-5-6 18 Humboldt Kneeland Rd. ca. 1 mi. W of Barry Rd. Comment
  HSC15800  Linum bienne W. F. Nickel 1965-4-28 Humboldt On Humboldt State Campus on S side of biological science building. Comment
  HSC49829  Linum bienne Maralyn O'Meara 1974-7-11 531 Humboldt Kneeland, Barry Ridge Comment
  UC161076  Linum usitatissimum Joseph P. Tracy 1911-6-11 3236 Humboldt near Trinidad; Northern Coast Ranges 60 Comment
  JEPS19999  Lipocarpha micrantha Joseph P. Tracy 1931-9-7 9650 A Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC55228  Listera convallarioides G. L. Clifton, Griswold 1979-8-2 12428 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC136462  Listera cordata Doris K. Kildale 1926-3-21 1592 Humboldt Field redacted by CAS, contact the data manager for more information 609 Comment
  SEINET12034162  Lithocarpus densiflorus J. P. Tracy 1950-1 19253 Humboldt Grasshopper Peak (in Bull Creek State Park at head of Canoe Creek) Comment
  CHSC35521  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson; Jane P. Nelson 1978-2-5 3760 Humboldt Kneeland, east side of junction of Knreeland and Maple Creek roads. 670 Comment
  UC1196492  Lithophragma affine Joseph P. Tracy 1918-5-26 4944 Humboldt lower foothills towards Redwood Creek Grouse Mt.; Northern Coast Ranges, , towards Redwood Creek 762 Comment
  HSC82106  Lithophragma campanulatum Thomas W. Nelson, Jane P. Nelson 1980-5-25 5259 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  HSC73961  Lithophragma heterophyllum Gail Newton 1980-6-7 130 Humboldt Near Brush Mtn. 1128 Comment
  UC1225759  Lobularia maritima Joseph P. Tracy 1946-6-2 17556 Humboldt near Somoa (on Humboldt Bay); Humboldt Bay 6 Comment
  HSC78980  Lobularia maritima L. P. Janeway 1984-12-5 1195 Humboldt N Spit of Humboldt Bay, W side Samoa Rd. near the boat ramp 5 Comment
  UC1199424  Logfia gallica Joseph P. Tracy 1936-8-23 15165 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  CAS-BOT-BC283409  Lolium multiflorum Brant Rogers; Arnold Tiehm 1978-6-28 1058 Humboldt Virgin Valley. Pasture just S of Range HQ Duffurena Ranch 1472 Comment
  HSC10302  Lolium perenne John Warner Hosking 1968-6-7 Humboldt HSC Campus, Arcata. Comment
  UCD66459  Lolium perenne A. A. Beetle; G. L. Stebbins Jr. 1942-6-2 3476 Humboldt 4 miles north of Birdgeville. Comment
  UC1103156  Lolium temulentum Joseph P. Tracy 1913-6-19 4211 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD66658  Lolium temulentum A. H. Murphy 1947-5-12 Humboldt Fairgrounds at Ferndale. Comment
Read comments
May 24 2012
  HSC74397  Lomatium californicum Gail Newton 1980-6-28 721 Humboldt Near Mad River Butte. 1536 Comment
  HSC96281  Lomatium californicum Wanda Naylor, Laurel Goldsmith 2005-6-24 14 Humboldt S of Grouse Mountain on NF1 1595 Comment
  UC162334  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1911-7-6 3345 Humboldt along rd. between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  HSC26274  Lomatium dasycarpum subsp. dasycarpum Thomas W. Nelson 1971-5-31 455 Humboldt Dry bar of the Mad River Comment
  SEINET13944712 Image available Lomatium howellii William A. Weber 1965-1 12295 Humboldt hills 5 mi E of Bridgeville; 2100 ft alt 640 Comment
  HSC102607  Lomatium macrocarpum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1594 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  RSA12522  Lomatium macrocarpum C. B. Wolf 1934-7-3 5914 Humboldt 21 mi. from Orick on Weitchpec Rd. Comment
  UC154251  Lomatium macrocarpum Joseph P. Tracy 1908-6 2835 Humboldt n.w. slope Buck Mt. 1219 Comment
  UC314629  Lomatium tracyi Joseph P. Tracy 1926-6-20 7610 Humboldt Horse Mt. Northern Coast Ranges, Horse Mt. 1524 Comment
  HSC45626  Lomatium utriculatum Diane L. Reed 1978-5-27 133 Humboldt Horse Mtn., Titlow Hill Rd., 2.7 mi. from Hwy. 299 Comment
  SD88513  Lonicera involucrata Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  CAS-BOT-BC241490  Lonicera involucrata var. ledebourii Alice Eastwood 1923-8-14 12306 Humboldt Samoa Comment
  HSC23144  Lonicera involucrata var. ledebourii Thomas W. Nelson 1970-10-17 238 Humboldt Big Lagoon Comment
  UC719786  Lonicera involucrata var. ledebourii Rogers McVaugh 1941-8-3 6217 Humboldt ca. 1 1/4 mi s H.Q. Patrick's Point State Park Comment
  UC534996  Lotus aboriginus H. E. Parks Jul 1932 Humboldt Bishop Pine Lodge Trinidad 60 Comment
  HSC28150  Lotus aboriginus Chris Gist 1971-6-19 39 Humboldt Hwy. 299, 10 mi. E of Blue Lake. Comment
  POM199441  Lotus aboriginus H. E. Parks, J. P. Tracy, C. R. Parks 1930-9-15 0762 Humboldt Kneeland, Bald Hills. Comment
  SEINET3523157 Image available Lotus aboriginus Joseph P. Tracy 1949-6-20 18321 Humboldt Near Boynton Prairie, 12 mi SE of Arcata Comment
  HSC78921  Lotus humistratus Jimerson, Imper 1982-5-17 1441 Humboldt Near Ashfield Ridge. 822 Comment
  RSA406183  Lotus humistratus Lester Rowntree 1931-7-21 s.n. Humboldt Mattole River Bridge 2 miles from Petrolia. Comment
  UC495724  Lotus humistratus Joseph P. Tracy 1929-4-28 8547 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC49979  Lotus humistratus M. A. Baker 1979-6-1 772 Humboldt N bank of road to Snow Mt. 610 Comment
  UC727682  Lotus nevadensis var. nevadensis Milo S. Baker 1946-6-14 11490 Humboldt hwy about 1/3 way up South Fork Mt. South Fork Mt. Comment
  SEINET12154246  Lotus oblongifolius J. P. Tracy 1936-1 14856 Humboldt Lack Pond, in Trinity River Valley, opposite mouth of Willow Crk 152 Comment
  UC303190  Lotus purshianus var. purshianus Joseph P. Tracy 1923-6-17 6271 Humboldt Big Lagoon Northern Coast Region 6 Comment
  RSA406270  Lotus unifoliolatus Bonnie C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  UC1197303  Lotus wrangelianus Joseph P. Tracy 1927-6-18 8178 Humboldt on road from ocean towards Petrolia; Northern Coast Ranges, Cape Mendocino 30 Comment
  UC1197306  Lotus wrangelianus Joseph P. Tracy 1931-6-14 9578 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  CAS-BOT-BC201191  Lupinus Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  SEINET5766215 Image available Lupinus N. H. Russell 1967-6-16 67 -11 Humboldt Clam Beach County Park, about 10 miles north of Eureka Comment
  UC584132  Lupinus David D. Keck and J. Clausen 1935-6-16 3392 Humboldt mouth of Little River Comment
  SEINET10488353  Lupinus affinis Charles Piper Smith 1948-5-10 Smith 48248 Humboldt Hwy 101. 0.2 Miles s of miranda Comment
  UC503004  Lupinus albicaulis var. shastensis Joseph P. Tracy 1932-6-14 10161 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  SEINET12170729  Lupinus albifrons E. A. York 1990-1-10 2659 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC40963  Lupinus arboreus Linda M. Barker 1976-5-13 1472 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  SBBG3527  Lupinus arboreus M. J. Cody 1938-7-14 Humboldt Trinidad Head Comment
  RSA407033  Lupinus arboreus var. arboreus Charlotte M. Hoak 1931-7-14 s.n. Humboldt Above Eureka. Comment
  HSC71165  Lupinus bicolor Thomas W. Nelson 1977-5-30 3411 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  UC1197277  Lupinus bicolor Joseph P. Tracy 1929-5-5 8564 Humboldt along South Fork of Eel River Miranda (Northern Coast Ranges); , South Fork of Eel River 121 Comment
  UC179935  Lupinus bicolor Joseph P. Tracy 1914-7-5 4561 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges, High Prairie on Bald Mountain 1066 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
  HSC74224  Lupinus latifolius subsp. viridifolius M. A. Baker 1980-7-19 3018 Humboldt Near Bret Hole. 1814 Comment
  JEPS65283  Lupinus latifolius var. latifolius Lincoln Constance 1934-5-29 714 Humboldt Upper Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC169060  Lupinus latifolius var. latifolius Joseph P. Tracy 1912-7-3 3719 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  POM92968  Lupinus latifolius var. latifolius L. R. Abrams 1922-6-25 8235 Humboldt 2 miles south of Fortuna Comment
  UC201370  Lupinus lepidus var. sellulus Joseph P. Tracy 1918-7-5 5021 Humboldt White Thorn Valley Comment
  HSC90754  Lupinus littoralis Gail Newton 1982-5-5 2534 Humboldt Elk River Wildlife Area, Eureka. Comment
  POM276552  Lupinus littoralis Lyman D. Benson 1928-7-10 446 Humboldt Clam Beach, Trinidad. 12 Comment
  UC584210  Lupinus littoralis David D. Keck and J. Clausen 1935-6-16 3383 Humboldt Mouth of Little River Comment
  RSA87026  Lupinus luteolus F. W. Peirson 1926-7-13 7057 Humboldt Near Blue Lake, Mad River Comment
  HSC14893  Lupinus rivularis S. S. Stutz 1963-4-28 32 Humboldt 7 mi. SE of Arcata, on Fickle Hill Rd. Comment
  UCD109516  Lupinus rivularis P. B. Kennedy 1929-6-12 s.n. Humboldt Around Eureka. Comment
  UC1152142  Luzula cascadensis Joseph P. Tracy 1930-7-17 8972 Humboldt Near McKay Camp, South Fork Mountain 1676 Comment
  HSC14059  Luzula comosa R. I. Bonn 1965-5-7 31 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC70225  Luzula comosa M. A. Baker 1980-6-8 1886 Humboldt Near Buck Flat. 1554 Comment
  CHSC117678  Luzula macrantha Peter F. Zika 2011-7-3 25500 Humboldt Titlow Hill Road, near junction with Forest Road 6N36, 1 air mile S of Horse Mountain, Outer North Coast Ranges. 1410 Comment
  UC183777  Luzula macrantha Joseph P. Tracy 1901-5-12 1087 Humboldt At Eureka; Northern Coast Region 0 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
  RSA78055  Lychnis coronaria P. A. Munz 1952-6-27 17799 Humboldt Boise Creek Public Camp west of Willow Creek. Comment
  HSC95519  Lycopodium clavatum Gordon Leppig 2004-2-3 2130 Humboldt Pacific Lumber Co. land, NE edge of THP 1-00-032. 300 Comment
  UCD23453  Lycopodium clavatum K. Niles 1950-10-1 s.n. Humboldt Loleta. Comment
  HSC103699  Lysichiton americanus M. R. Mesler 2014-9-3 1638 Humboldt Arcata, Jolly Giant Creek Rd 49 Comment
  RSA0023003  Lythrum Robert F. Thorne, P. C. Everett 1965-8-9 35324 Humboldt Clam Beach County Park: along highway. 3 Comment
  SEINET11261198  Lythrum hyssopifolia Rick Lundquist 1979-5-18 100 Humboldt Arcata South Quadrangle. South G Street ca 1 mile south of Samoa Boulevard.; 0 0 Comment
  HSC59797  Lythrum hyssopifolia Clark L. Miller 1979-5-19 1148 Humboldt Along Samoa Blvd. before railroad tracks, 4 mi. W of Arcata. Comment
  HSC62980  Lythrum hyssopifolia David Wheeler 1979-5-22 128 Humboldt Samoa, intersection of Samoa Blvd. and the railroad tracks near Arcata Redwood Co. Comment
  UC34191  Madia elegans Harley P. Chandler 1901-6-1 1409 Humboldt Klamath River North Coast Ranges 243 Comment
  CAS-BOT-BC342802  Madia elegans J. Clausen 1932-9-18 688 Humboldt 8.2 miles west of Bull Creek Store; near summit of ridge 914 Comment
  RSA15579  Madia elegans subsp. elegans C. B. Wolf 1927-8-28 1162 Humboldt On the Trinity River, 3 miles from Weitchpec Comment
  HSC58171  Madia gracilis G. L. Clifton, Griswold 1979-8-2 12245 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  JEPS7504  Madia gracilis Joseph P. Tracy 1935-7-23 14132 Humboldt at Corral Prairie Trinity Summit 1584 Comment
  UC176727  Madia gracilis Joseph P. Tracy 1909-8-1 3069 Humboldt Kneeland Prairie 762 Comment
  POM54277  Madia gracilis subsp. gracilis M. H. Manning 1902-06 s.n. Humboldt Hupa Comment
  RSA0011631  Madia sativa R. F. Thorne, Percy C. Everett 1965-8-7 35216 -b Humboldt Samoa Peninsula. 0 Comment
  UC581813  Madia sativa Joseph P. Tracy 1936-6-9 14909 Humboldt Upper Mattole Valley 121 Comment
  RSA1369  Mahonia nervosa E. R. Johnson 1929-08 618 Humboldt 7 miles east of Arcata on the road to Willow Creek. 76 Comment
  RSA89891  Mahonia nervosa E. K. Balls, P. C. Everett 1953-10-13 18655 Humboldt 17.4 mi. E of jct Hwys 101 and 299 above Blue Lake. 274 Comment
  HSC89446  Maianthemum dilatatum P. A. Daly 1984-5-13 23 Humboldt Along trail at Trinidad Head 61 Comment
  UC212989  Maianthemum dilatatum Joseph P. Tracy 1920-4-25 5316 Humboldt at Eureka Northern Coast Ranges, Eureka 0 Comment
  CAS-BOT-BC508509  Maianthemum dilatatum Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC508519  Maianthemum dilatatum Alice Eastwood 1907-4-21 35 Humboldt Port Trinidad Comment
  RSA376907  Maianthemum dilatatum Larry E. DeBuhr, Gary D. Wallace 1972-5-22 606 Humboldt About 25 miles north of Arcata on the south end of Big Lagoon. Comment
  RSA41939  Maianthemum dilatatum H. C. Cantelow 1935-5-30 s.n. Humboldt 8 miles north of Orick Comment
  CHSC24724  Maianthemum racemosum G. Strang 1976-4-10 7 Humboldt 1.2 mi. e of Hydesville, s side of highway. 45 Comment
  HSC12251  Maianthemum racemosum subsp. amplexicaule Gary J. Stebbins 1970-4-5 56 Humboldt Along rd. to Maple Creek 1.6 mi. W of bridge over Mad River Comment
  HSC41341  Maianthemum racemosum subsp. amplexicaule Brad Klipfel 1974-9-7 559 Humboldt Horse Mtn., E fork of Willow Creek. Comment
  HSC58079  Maianthemum racemosum subsp. amplexicaule G. L. Clifton, Griswold 1979-8-1 11983 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC97509  Maianthemum racemosum subsp. amplexicaule Cara Witte 2007-5-31 155 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  HSC15654  Maianthemum racemosum subsp. amplexicaule J. R. Eichelberger 1964-5-5 71 Humboldt 0.5 mi. E of entrance to Azalea State reserve Comment
  CAS-BOT-BC347411  Malacothrix floccifera Joseph P. Tracy 1911-7-4 3278 Humboldt Northern Coast Ranges. Along Willow Creek. (Tributary of Trinity River, Humboldt County) near its mouth 152 Comment
  RSA319241  Malus fusca Patricia Wilder 1968-8-21 4387 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  HSC23743  Marah oregana Tim Baroni 1971-7-6 122 Humboldt About 5 mi. S of Ferndale on the Mattole Rd. Comment
  JEPS42473  Marah oregana Lincoln Constance 1934-5-31 743 Humboldt from w boundary of Park to Grasshopper Pk.(Squaw Cr.) rd (along n side of creek); South Fork Eel River, Bull Creek Flat Comment
  HSC12785  Marah oregana M. J. Athey 1970-11-2 7 Humboldt Trinidad, just after Westhaven turnoff on Hwy. 101, and Havenway Comment
  RSA239725  Marah oregana Larry E. DeBuhr, Gary D. Wallace 1973-5-19 1116 Humboldt Prairie Creek Redwood State Park; along Gold Bluff Beach. Comment
  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
  UC1103753  Melica aristata Joseph P. Tracy 1936-8-7 15105 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC1145132  Melica aristata Joseph P. Tracy 1948-8-15 18157 Humboldt 2 mi e Grove's Prairie (on ridge, Trinity Summit); Trinity Summit 1524 Comment
  UCD66181  Melica californica D. W. Cooper 1956-6-5 s.n. Humboldt Upper Mattole area. Benbow Ranch, Ettersburg. Comment
  CAS-BOT-BC281320  Melica harfordii David D. Keck 1948-7-2 6005 Humboldt E side Rocky Ridge, E of Berry's summit, 4.1 miles W of Willow Creek, near boundary of Six Rivers National Forest 457 Comment
  CAS-BOT-BC281328  Melica harfordii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mountain Trail 1524 Comment
  HSC98673  Melica harfordii Cara Witte 2008-7-10 848 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile from National Forest 1. Under powerlines. 1237 Comment
  SEINET200110 Image available Melica stricta Joseph P. Tracy 1935-7-28 14333 Humboldt Trinity Summit head of Brett Hole 1830 Comment
  CAS-BOT-BC262467  Melica subulata Joseph P. Tracy 1935-5-25 13898 Humboldt North Coast Ranges. Dobbyn Creek 152 Comment
  HSC15010  Melilotus albus Paul Shields Aug 1955 Humboldt 2 mi. N of Weott Comment
  RSA152465  Mentha aquatica Joseph P. Tracy 1943-11-14 17451 Humboldt Field s Landing, 2 miles from town 6 Comment
  RSA152288  Mentha pulegium Joseph P. Tracy 1946-8-25 17642 Humboldt Grizzly Bluff; along Eel River Comment
  HSC32925  Micropus californicus var. californicus Thomas W. Nelson, James Nelson 1973-5-28 968 Humboldt McKeown Ranch N of Dinsmore Comment
  CAS-BOT-BC348374  Micropus californicus var. californicus S. K. Harris; J. P. Tracy 1942-6-15 s.n. Humboldt Harris Road, 1 mile east of Garberville 30 Comment
  UC1223189  Micropus californicus var. californicus Joseph P. Tracy 1942-6-15 17150 Humboldt 1/2 mi ne Garberville (on the road to Harris) Comment
  HSC74440  Microseris nutans M. A. Baker 1980-6-28 2478 Humboldt Near Mad River Buttes 1445 Comment
  UC34653  Microseris nutans Chesnut and Drew 1888-7-21 Humboldt w slope South Fork Mt. Comment
  HSC75455  Microsteris gracilis J. O. Sawyer 1980-7-18 3596 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC98810  Microsteris gracilis Cara Witte 2007-5-21 56 Humboldt Board Camp Mountain. 1/2 mile south of intersection with 4N38 and National Forest 1. 1427 Comment
  POM193012  Microsteris gracilis subsp. gracilis H. E. Parks, Joseph P. Tracy 1930-5-25 0795 Humboldt Laribee Valley. 793 Comment
  UC582606  Mimulus alsinoides Joseph P. Tracy 1923-6-3 6258 Humboldt Kneeland Prairie 762 Comment
  HSC39618  Mimulus breweri Thomas W. Nelson, Jane P. Nelson 1976-6-15 2722 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  UC582603  Mimulus breweri Joseph P. Tracy Jul 16 1930-Jul 19 1930 8975 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC147904  Mimulus breweri Joseph P. Tracy 1908-6 2699 Humboldt opposite Buck Mountain; Northern Coast Ranges, Van Duzen River Valley 762 Comment
  HSC20704  Mimulus cardinalis Paul Shields 1955-8-12 Humboldt 1/2 mi. N of Miranda Comment
  HSC72408  Mimulus dentatus J. P. Smith 1973-5-26 6821 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC102503  Mimulus guttatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1488 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  JEPS86687  Mimulus nanus var. nanus L. R. Heckard with T. I. Chuang 1990-7-15 6770 Humboldt below and s of road South Fork Mountain (summit of Blakes Mountain); , Blakes Mountain 1800 Comment
  UC1196781  Mimulus pulsiferae Joseph P. Tracy 1912-7-31 3919 Humboldt near summit (stream-bank); Northern Coast Ranges, Buck Mountain 1676 Comment
  CAS-BOT-BC388626  Minuartia douglasii Joseph P. Tracy 1935-6-23 13972 Humboldt French Camp Ridge 1066 Comment
  HSC57617  Minuartia nuttallii subsp. gregaria G. L. Clifton, Griswold 1979-7-25 10742 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1198870 Image available Mitella diversifolia Joseph P. Tracy 1935-7-22 14123 Humboldt near Forks of Tish-Tang-A-Tang Creek; Trinity Summit 1371 Comment
  HSC38487  Moehringia macrophylla D. E. Anderson, J. P. Smith 1971-7-6 - 1272 Humboldt Horse Mtn. Comment
  HSC38514  Moehringia macrophylla D. E. Anderson, J. P. Smith 1971-6-18 - 1086 Humboldt Horse Mtn. Comment
  HSC99385  Moehringia macrophylla K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 34 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC58145  Monardella odoratissima subsp. pallida Gilbert Muth 1979-8-1 12183 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1781 Comment
  HSC101619  Monardella odoratissima subsp. pallida Cara Witte 2007-6-28 390 Humboldt Intersection of 6N08 (Friday Ridge Road) and 5N39. 1475 Comment
  RSA33443  Monardella odoratissima subsp. pallida Carl B. Wolf 1937-8-13 9269 Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  UC1239675  Monardella odoratissima subsp. pallida Joseph P. Tracy 1942-9-6 17310 Humboldt South Fork Mountain, near McKay Camp. 1676 Comment
  CAS-BOT-BC220518  Monardella villosa L. R. Abrams; R. C. Bacigalupi 1922-6-25 8221 Humboldt Camp 6 mi north of Garberville Comment
  CAS-BOT-BC220519  Monardella villosa Hubert O. Jenkins 1943-8-1 s.n. Humboldt In dry rocky bed of Eel River, Richardson Grove Comment
  HSC14282  Monardella villosa Paul Shields Jul 1955 Humboldt 3 mi. S of Myers Flat Comment
  JEPS62396  Monardella villosa subsp. villosa W. L. Jepson 1932-7-28 16433 Humboldt Dyerville 88 Comment
  UC2035936  Monardella villosa subsp. villosa C. Epling, Wm. Robison 1935-7-24 Humboldt Dyerville Comment
  UC535774  Monotropa hypopitys Eleanor Armstrong 1934-8-1 1171 Humboldt Richardson Grove Comment
  UC673011  Montia diffusa Joseph P. Tracy 1930-8-24 9165 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC444799  Montia diffusa Don Hagar 1956-5-14 59 Humboldt Brush Mt., ca. 6 miles sw. of Willow Creek 914 Comment
  POM163985  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka Comment
  CAS-BOT-BC445157  Montia parvifolia Doris K. Kildale 1928-6-24 5263 Humboldt Redwood Creek at Berry's 289 Comment
  UC83800  Montia parvifolia Harley P. Chandler May, 1901 1261 Humboldt North Coast Ranges, Redwood Belt Redwood Belt; North Coast Ranges, Redwood Belt 152 Comment
  SBBG1265  Morella californica M. J. Cody 1928-7-14 Humboldt 2 mi N of Trinidad Comment
  UCD86793  Muhlenbergia mexicana Eleanor Armstrong 1934-1 1148 Humboldt Richardson Grove. Comment
  UCD86796  Muhlenbergia mexicana Eleanor Armstrong 1934-1 1149 Humboldt Richardson Grove. Comment
  UCD86804  Muhlenbergia mexicana Joseph P. Tracy 1918-9-29 5115 Humboldt South Fork of Eel River, 4 miles above the mouth. 60 Comment
  UC1222232  Myosotis discolor Joseph P. Tracy 1948-6-13 18036 Humboldt on Larrabee Creek rd. halfway between Bridgeville and Blocksburg Comment
  CAS-BOT-BC101665  Myrica californica V. Rattan s.n. Humboldt unspecified Comment
  POM232029  Myrica californica I. L. Wiggins 1930-7-11 4682 Humboldt Near Samoa Comment
  RSA174002  Myrica californica Robert F. Thorne 1957-9-2 19009 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  RSA46887  Myrica californica Doris K. Kildale 1926-6-18 2393 Humboldt Gold Bluffs. Comment
  UC1585367  Myrica californica R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 18 Humboldt W. of Eureka 0.5 km. S. of Hwy. 255 on New Navy Base Rd., on North spit of Samoa Peninsula. Comment
  UC722454  Myrica californica C. L. Hitchcock 1939-7-14 5437 a Humboldt bluffs facing sea at Shelter Cove Comment
  HSC77872  Myriophyllum sibiricum Andy Gordus 1978-1 Humboldt N side of Hwy. 299, near Essex Rd. Comment
  UCSB24729  Myriophyllum sibiricum Keefe, Joseph 1967-7-8 Humboldt east side of U.S. Highway 101; turnoff to Crannell Road; north of Eureka 6 Comment
  HSC15606  Narcissus pseudonarcissus J. L. Baker 1965-4-14 52 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  UC1152040  Nassella pulchra A. H. Murphy 1951-3-30 Humboldt along roadside near Mattole River Grange Hall; Mattole Valley Comment
  HSC75466  Navarretia capillaris J. O. Sawyer 1980-7-18 3596 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC82413  Navarretia divaricata Thomas W. Nelson 1979-7-11 5033 Humboldt Along trail from Grogan's Hole to summit of N Trinity Mtn. Comment
  HSC76562  Navarretia divaricata var. divaricata Denis Kearns 1981-7-22 324 Humboldt Near Whiteys Peak. 1487 Comment
  UC908144  Navarretia intertexta Joseph P. Tracy 1932-6-14 10162 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC35870  Navarretia mellita Thomas W. Nelson 1975-8-5 Humboldt Parking area of 7th Day Advent Church in Eureka Comment
  JEPS70390  Navarretia mellita Joseph P. Tracy 1934-7-9 13333 Humboldt 5 mi s Harris 762 Comment
  CAS-BOT-BC232739  Navarretia sinistra subsp. pinnatisecta Doris K. Kildale 1926-8-2 2444 Humboldt Flannegan's Mill near Strong's Station, Van Duzen River Comment
  SEINET200382  Navarretia squarrosa J. P. Tracy 1904-7-31 2135 Humboldt Immediate vicinity of Eureka. 0 Comment
  HSC99204  Nemophila heterophylla D. E. Anderson 1965-5-8 3650 Humboldt About 3 mi. N of Willow Creek along Rd. on E side of Trinity River Comment
  SBBG6129  Nemophila menziesii var. atomaria H. and M. Dearing 1939-4-24 3424 Humboldt near Dyerville Comment
  UC249523  Nemophila menziesii var. atomaria Joseph P. Tracy 1922-5-28 6055 Humboldt Little River Beach Northern Coast Ranges 6 Comment
  POM73962  Nemophila menziesii var. atomaria Joseph P. Tracy 1906-5-6 2445 Humboldt Near Hydesville. 60 Comment
  UC562595  Nemophila parviflora Joseph P. Tracy 1932-7-13 10492 Humboldt near Corral Prairie (Trinity Summit); , near Corral Prairie 1584 Comment
  HSC71030  Nemophila pedunculata Thomas W. Nelson 1977-4-20 3322 Humboldt Along FS Rd. 1N15 at bridge over Mad River 762 Comment
  UC198618  Nicotiana quadrivalvis Joseph P. Tracy 1916-9-5 4764 Humboldt 4 mi above South Fork of Eel River mouth; Northern Coast Ranges 60 Comment
  UC162684  Nicotiana quadrivalvis Joseph P. Tracy 1911-7-10 3500 Humboldt near Mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  UC902226  Nothochelone nemorosa Joseph P. Tracy 1948-8-15 18138 Humboldt on Ridge 2 mi e of Grove's Prairie (Trinity Summit); Trinity Summit 1524 Comment
  HSC54589  Notholithocarpus densiflorus var. densiflorus Overton, Butler 1979-7-24 9657 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC16162  Nuphar polysepala D. B. Bader 1963-3-29 5 Humboldt Second of the Clam beach lagoons, W of Hwy. 101 Comment
  HSC48251  Nuphar polysepala James Hansen 1975-5-28 Humboldt Essex pond on Essex Ranch, .5 mi. N of Hwy. 299 near Blue Lake Comment
  HSC37167  Nuttallanthus texanus J. D. Ackerman 1974-6-12 319 Humboldt 1 mi. N of Manila between Mad River Slough and sand dunes Comment
  JEPS15792  Oenanthe sarmentosa Joseph P. Tracy 1924-9-28 6910 Humboldt Centerville Northern Coast Ranges, Centerville 6 Comment
  CDA38485  Oenanthe sarmentosa Tario 1932-9-21 s.n. Humboldt Arcata. 0 Comment
  SEINET12119027  Oenanthe sarmentosa J. P. Tracy 1950-1 19348 Humboldt Field's Landing, 2 mi S of town 6 Comment
  CHSC70155  Oenothera glazioviana David K. Imper 1983-7-1 Humboldt Eureka. Weedlot on 6th Street. 15 Comment
  NY233562  Oenothera hookeri subsp. wolfii C. B. Wolf 1934-10-11 6172 Humboldt Roadside along the Redwood Highway, just south of Trinidad. Comment
  RSA0083228  Orthilia secunda C. B. Wolf 1937-8-13 9264 Humboldt North Coast Range, 12 mi. E. of Hoopa Valley on New Road toward Trinity Summit. 1677 Comment
  CAS-BOT-BC238377  Orthocarpus Joseph P. Tracy 1935-7-24 14171 Humboldt Trinity Summit, near ranger station 1828 Comment
  RSA402027B  Orthocarpus faucibarbatus S. K. Harris 1936-6-7 683 Humboldt Eureka. Near railroad station. 3 Comment
  UC1222795  Orthocarpus imbricatus Joseph P. Tracy 1950-8-8 19285 Humboldt Croghan Hole Trinity Summit (Trinity Summit); , Croghan Hole 1676 Comment
  HSC45577  Osmorhiza berteroi Diane L. Reed 1978-5-7 48 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  UC162920  Osmorhiza berteroi Joseph P. Tracy 1911-7-5 3322 Humboldt along Willow Creek near mouth (creek is a tributary of Trinity River)); Northern Coast Ranges 304 Comment
  HSC96296  Osmorhiza occidentalis Laurel Goldsmith, Wanda Naylor 2005-6-10 7 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1370 Comment
  UC1222753  Osmorhiza occidentalis Joseph P. Tracy 1950-6-25 18887 Humboldt Burr Valley Buck Mountain (nw slope of mt.) 1066 Comment
  HSC32844  Osmorhiza purpurea Thomas W. Nelson, Jane P. Nelson 1973-5-28 945 Humboldt McKeown Ranch N of Dinsmore Comment
  CHSC24885  Oxalis oregana W. A. Vaccaro 1976-4-4 1 Humboldt Ca. 300 yds. NE of int. of Cedar St. and W. St., Cutten. 45 Comment
  CSUSB850  Oxalis oregana Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  SEINET3347662 Image available Oxalis oregana Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15204 Humboldt Bolling Grove State Park; unspecified Comment
  HSC16709  Oxalis oregana D. E. Anderson 1963-2-9 2366 Humboldt S of Kneeland on Rd. to Brigeville Comment
  HSC45275  Oxalis oregana Brad Klipfel 1973-4-28 6 Humboldt Along Korbel to Maple Creek County Rd. Comment
  UC1145221  Panicum acuminatum var. acuminatum Joseph P. Tracy 1938-9-25 16172 Humboldt Bald Mountain at Lake Prairie; Bald Mountain at Lake Prairie 1066 Comment
  UC33881  Panicum capillare Chestnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  UC535745  Panicum capillare Eleanor Armstrong 1147 Humboldt Richardson Grove Comment
  HSC82967  Parapholis strigosa A. L. Eicher 1986-7-7 Humboldt Humboldt Bay, 0.2 mi. S of the mouth of Jacoby Creek. 1 Comment
  UC1222446  Parentucellia viscosa H. E. Parks and Joseph P. Tracy 1932-8-13 10348 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  HSC71156  Paxistima myrsinites Thomas W. Nelson 1977-6-15 3426 Humboldt Along USFS Rd. 5N10 just N of its junction with USFS Rd. 6N08 1372 Comment
  BLMAR493  Pectiantia ovalis Jennifer Wheeler 2009-4-30 493 Humboldt King range, Hidden Valley trail; trail start Comment
  HSC20926  Pedicularis densiflora D. E. Anderson 1965-5-1 3556 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  HSC20923  Pedicularis densiflora Jack Rockwell 1962-5-13 69 Humboldt N of main highway on logged hillside 632 Comment
  CHSC3181  Pedicularis groenlandica Robert D. Briggs 1966-5-8 R- 187 Humboldt 1/4 mile south of Summit- 18 miles west of Willow Creek, on State 299. Comment
  HSC50938  Pedicularis semibarbata G. L. Clifton, Walter Overton 1979-6-3 3760 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  CAS-BOT-BC67768  Pellaea andromedifolia Doris K. Kildale 1928-12-30 6768 Humboldt Phillipsville Comment
  JEPS7210  Penstemon anguineus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8918 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1245389  Penstemon anguineus Joseph T. Gregory 1933-7-16 449 Humboldt nr MacKay Camp (edge of swamp); nr MacKay Camp 1737 Comment
  UC1222461  Penstemon heterophyllus Joseph P. Tracy 1936-6-17 14973 Humboldt at crossing of highway below Larrabee Valley (Little Van Duzen River); , below Larrabee Valley 713 Comment
  NY601767  Penstemon heterophyllus var. purdyi L. Constance 1934-5-26 676 Humboldt South Fork of Eel River, south end of Dyerville Bridge 45.7 Comment
  UC673099  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1940-5-5 16543 Humboldt Garberville Garberville (on river bar) 152 Comment
  UC585632  Penstemon laetus var. sagittatus Joseph P. Tracy 1937-7-24 15512 Humboldt 2 mi se Devil's Hole; Trinity Summit, se of Devil's Hole 1584 Comment
  NY629991  Penstemon parvulus J. P. Tracy 1942-6-23 17223 Humboldt Trinity Summit. Ridge top one mile west of Mud Springs, in serpentine formation 1158.2 Comment
  HSC35942  Penstemon rattanii Thomas W. Nelson, Jane Nelson, James Nelson 1975-7-15 2034 Humboldt French Camp, Bald Hills. Comment
  UC201729  Penstemon rattanii unknown 1883-6-9 Humboldt near Kneeland Pr.; near Kneeland Pr. Comment
  UC906651  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1947-8-24 17894 Humboldt Box Camp Trinity Summit 1463 Comment
  LA37541  Perideridia gairdneri subsp. borealis Joseph P.; 1948-9-26 18235 Humboldt Fickle Hill, Boynton Prairie, 6 mi. SE of Arcata, at edge prairie 609 Comment
  UC154075  Perideridia gairdneri subsp. borealis J. P. Tracy Aug 26 1900-May 12 1901 Humboldt near Eureka; Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC413506  Persicaria amphibia Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  UCD99507  Persicaria lapathifolia Malcolm A. Nobs; S. Galen Smith 1949-8-9 1232 Humboldt Southern side of the town of Blue Lake. Comment
  CAS-BOT-BC419194  Persicaria maculosa L. R. Abrams; R. Bacigalupi 1922-6-25 8270 Humboldt Big Lagoon south of Orick Comment
  CAS-BOT-BC419193  Persicaria maculosa Carl D. Duncan 1920-9-22 s.n. Humboldt Trinity River, Hoopa Valley Comment
  HSC17527  Persicaria maculosa Lincoln Constance 1934-6-12 861 Humboldt N bank of S Fork Eel River, Bull Creek Rd. Comment
  HSC98989  Petasites frigidus var. palmatus Cara Witte 2008-6-4 680 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  UC1199487  Petasites frigidus var. palmatus Joseph P. Tracy 1936-2-28 14770 Humboldt Trinidad 3 Comment
  RSA183572  Petasites palmatus R. I. Bonn 1965-3-5 4 Humboldt 4 miles west of Arcata on Samoa Road. Comment
  SEINET11809912  Petasites palmatus J. P. Tracy 1947-1 17670 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  OBI77760  Phacelia bolanderi Rimo Bacigalupi, G. T. Robbins 1954-6-28 4657 Humboldt Trinity River, 2 mi N of Hoopa, Hoopa Valley Indian reservation 91 Comment
  POM287461  Phacelia bolanderi Lyman Benson 1928-7-12 484 Humboldt Woods across South Fork Eel River from Weott Ranger Station; seaward north coast mt. range. 61 Comment
  UCD120311  Phacelia californica James P. Smith; Advanced Plant Taxonomy Class 1973 1973-5-26 6871 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC30744  Phacelia heterophylla subsp. virgata D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5620 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC1199106  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1945-7-4 17512 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS1158  Phacelia mutabilis Joseph P. Tracy 1932-7-12 10432 Humboldt Corral Prairie Trinity Summit 1584 Comment
  RSA134090  Phacelia nemoralis subsp. oregonensis L. R. Heckard 1952-5-13 275 Humboldt Above the South Fork of the Eel River, about w miles S of the Humboldt County line. Redwood and Madrone area along U.S. 101. Comment
  UC1222902  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1950-6-8 18737 Humboldt ridge summit near Mountain Glen Ranch (7 mi s of Ferndale); Bear River Ridge 609 Comment
  SEINET200961 Image available Phalaris angusta J. P. Tracy 1935-5-25 13856 Humboldt Fort Seward 107 Comment
  BLMAR51  Phalaris californica Brad Barr June, 1982 51 Humboldt King range, Lake ridge Nroth facing slope Comment
  UC820491  Phalaris californica John Thomas Howell 1937-7-31 13718 Humboldt between Redwood Creek and Korbel; btw Redwood Creek and Korbel Comment
  SBBG2732  Philadelphus lewisii H. and M. Dearing 1939-6-23 3693 Humboldt 30 mi E of Arcata Comment
  RSA0046936  Philadelphus lewisii Lyman Benson 1928-7-10 397 Humboldt Hills by Humboldt Bay, Fortuna. Mouth of Eel River. 30 Comment
  RSA0057782  Philadelphus lewisii Roxana S. Ferris 1955-7-11 12975 Humboldt Summit of U.S. Hwy 299 btwn. Willow Creek and Blue Lake. Comment
  UC52675  Phlox adsurgens Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  RSA256575  Phlox adsurgens J. O. Sawyer 1970-6-24 2262 Humboldt S of Mill Creek Gap. F.S. Road 10N02. 1433 Comment
  SEINET3882874  Physaria kingii subsp. cobrensis C. Reed, Kathryn W. Rollins 1981-6-6 81229 Humboldt 8a, Charles Sheldon Wildlife Refuge, 43 miles northeast of Cedarville.; 0 Comment
  RSA175261  Picea sitchensis Robert F. Thorne 1957-9-3 19011 Humboldt Little River Beach, few miles S of Trinidad. Comment
  UC535711  Picea sitchensis Eleanor Armstrong 1934-7-31 1145 Humboldt Patricks Point 30 Comment
  UC1134104  Pinus contorta subsp. contorta H. S. Yates 1936-6-16 5660 Humboldt 1 mi sw Samoa; Eureka Quad. 6 Comment
  NY49716  Pinus contorta var. contorta R. E. Anderson 1987-3-28 172 Humboldt Patrick's Point State Park, on west Rim Trail 30 Comment
  CAS-BOT-BC73151  Pinus jeffreyi Joseph P. Tracy; H. E. Parks 1934-6-14 11030 Humboldt Horse Mountain 1432 Comment
  HSC99046  Pinus jeffreyi Cara Witte 2008-6-15 754 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36. 1 mile north of intersection with 6N36A. 1428 Comment
  HSC54513  Pinus monticola Overton, Butler 1979-7-23 9429 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC31514  Pinus muricata Steve Selva, Roger Jensen 1974-8-21 32 Humboldt E bank of Hwy. 101 opposite rest stop, 2 mi. N of Trinidad Comment
  SEINET3874233 Image available Pinus muricata Robert M. Specht 1977-11-20 1190 Humboldt Population ranges from a few scattered trees near Hhighway 101 to flats along Georgia Pacific's A-line.; 0 122 Comment
  HSC70642  Pinus ponderosa R. York 1980-5-18 591 Humboldt Near Black Mtn. 792 Comment
  UC55660  Pinus ponderosa P. E. Goddard 1901-7-10 51 Humboldt ona Hupa (<currently spelled Hoopa as a place name>) Comment
  JEPS64469  Piperia candida Lincoln Constance 1934-5-27 708 Humboldt s end of Dyerville Bridge (Bull Creek Region, S. Fork Eel River); Bull Creek Region, S. Fork Eel River 45 Comment
  UC1488747  Piperia elegans J. D. Ackerman 1974-8-13 405 Humboldt ca 2 mi n Manila (between sand dunes and Mad River Slough) Comment
  UC526817  Plagiobothrys bracteatus Joseph P. Tracy 1933-7-20 12812 Humboldt near Blue Lake (in dry bed of slough); Mad River 15 Comment
  UC1239619  Plagiobothrys nothofulvus Joseph P. Tracy 1933-5-20 12243 Humboldt Mattole Valley near Petrolia; Northern Coast Ranges 30 Comment
  RSA80192  Plagiobothrys reticulatus Alice Eastwood, J. T. Howell 1937-6-23 4811 Humboldt Little Van Duzen River. Comment
  UC1222207  Plagiobothrys scouleri Joseph P. Tracy 1946-5-19 17535 Humboldt near Ashfield; Kneeland Prairie 822 Comment
  UC1222195  Plagiobothrys scouleri var. scouleri Joseph P. Tracy 1950-6-25 18900 Humboldt 3 mi s Burr Valley (near Sproston place, on road to Albee place, sw slopes Buck Mountain); Buck Mountain 1158 Comment
  HSC34459  Plantago erecta J. P. Smith, J. O. Sawyer 1975-5-11 8084 Humboldt Samoa Peninsula, just N of The Coast Guard Station boundary. Comment
  HSC40307  Plantago lanceolata Linda M. Barker 1976-4-30 1401 Humboldt 3 mi. W of Arcata Comment
  OBI11640  Plantago lanceolata Joseph P. Tracy 1947-8-10 17882 Humboldt Eureka Comment
  HSC37170  Plantago lanceolata J. D. Ackerman 1974-5-25 259 Humboldt S Trinidad Beach, S of Trinidad Head Comment
  UC1196134  Plantago major Joseph P. Tracy 1931-9-7 9657 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET10782201  Plantago major J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13016 Humboldt On U.S. 101, near Holmes, 1.76 km south of Stafford Road. Comment
  HSC37954  Plantago maritima Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  SJSU11078  Plantago maritima H. T. Harvey 1977-7-5 602 Humboldt Elk R Spit, Humboldt Bay Comment
  HSC55027  Platanthera dilatata Overton, Butler 1979-7-31 11451 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC74221  Platanthera dilatata var. leucostachys M. A. Baker 1980-7-22 3121 Humboldt Near Grogan Hole. 1676 Comment
  UCR37808  Platanthera dilatata var. leucostachys T. Jimerson, J. Pageau 1979-10-8 727 Humboldt Near Tish Tang A Tang Ridge close to the town of Hoopa Comment
  HSC70989  Platanthera sparsiflora Gail Newton 1980-7-20 1648 Humboldt Near Bell Swamps 1426 Comment
  HSC76612  Platanthera sparsiflora Teresa Prendusi 1981-7-9 177 Humboldt Near Cedar Camp. 1268 Comment
  SEINET3124150 Image available Platystemon californicus Joseph P. Tracy 1904-5-1 2047 Humboldt Region about Humboldt Bay, sandy field at Bucksport 0 Comment
  UC169077  Plectritis brachystemon Harley P. Chandler May, 1901 1149 B Humboldt North Coast Ranges, Humboldt Bay Humboldt Bay; North Coast Ranges, Humboldt Bay 3 Comment
  UC1239578  Plectritis congesta Harley P. Chandler May, 1901 1149 Humboldt North Coast Ranges, Humboldt Bay Humboldt Bay; North Coast Ranges, Humboldt Bay 3 Comment
  HSC21686  Plectritis congesta subsp. congesta J. R. Good 1964-5-3 37 Humboldt 0.10 mi. N of Fairhaven, 60 yds. W of road. Comment
  HSC96284  Plectritis congesta subsp. congesta J. Breton, A. Livingston 2005-6-8 5 Humboldt 2.0 mi. S of Hwy. 299 on Titlow Rd. 1032 Comment
  HSC63844  Pleuricospora fimbriolata M. A. Baker 1979-6-29 953 Humboldt 900 Comment
  SEINET200957 Image available Pleuropogon refractus J. P. Tracy 1932-7-14 10539 Humboldt Corral Prairie 1524 Comment
  UC1145107  Pleuropogon refractus Joseph P. Tracy 1939-7-9 16334 Humboldt Snow Camp 1402 Comment
  SEINET200751  Pneumonanthe setigera Joseph P. Tracy 1919-9-22 5274 Humboldt Trinity Summit 1829 Comment
  UC1103179  Poa confinis Joseph P. Tracy 1922-5-28 6056 Humboldt Little River Beach North Coast Ranges. Little River Beach 6 Comment
  CHSC10126  Poa douglasii J. W. Johnson 1961-8-17 1028 Humboldt On a dune, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC10705  Poa douglasii S. J. Moore 1965-5-9 48 Humboldt Dry Lagoon State Park, near entrance. Comment
  UC569487  Poa douglasii H. S. Yates 1936-6-18 5726 Humboldt near mouth Little River; Eureka Quadrangle 4 Comment
  UC1103795  Poa howellii Joseph P. Tracy 1918-7-5 5035 Humboldt White Thorn Valley; Northern Coast Ranges 304 Comment
  CAS-BOT-BC255850  Poa kelloggii Harley P. Chandler 1901-5-1 1183 Humboldt Humboldt Bay 30 Comment
  HSC90698  Poa macrantha Gail Newton 1982-6-5 3576 Humboldt Elk River Wildlife Area, Eureka. Comment
  POM204873  Poa macrantha Joseph P. Tracy 1900-7-4 886 Humboldt Sand Hills of Ocean Beach at Samoa, opp. Eureka Comment
  RSA21035  Poa macrantha C. B. Wolf 1937-6-18 8904 Humboldt Centerville Beach 3 Comment
  HSC10764  Poa pratensis Gene S. Van Horn 1962-5-5 13 Humboldt Arcata, 250 East 17th St. 61 Comment
  HSC40520  Poa secunda subsp. secunda Thomas W. Nelson, Jane P. Nelson 1976-7-1 2927 Humboldt Along ridge W of Lassic Peak (Signal Peak). 1738 Comment
  UCD91732  Poa secunda subsp. secunda Al Murphy 1947-8-1 s.n. Humboldt Horse Mt. Comment
  HSC10812  Poa unilateralis R. D. Rogers 1964-4-16 5 Humboldt Patricks Point State Park. Comment
  RSA249525  Polygonum arenastrum Robert F. Thorne, Percy C. Everett 1965-8-8 35244 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  HSC17470  Polygonum aviculare P. W. Shields 1955-6-18 Humboldt HSC Campus Comment
  CAS-BOT-BC413931  Polygonum aviculare subsp. aviculare Carl B. Wolf 1927-8-29 1208 Humboldt Devil's Gate, south of Camp Mendocino Comment
  CAS-BOT-BC414301  Polygonum aviculare subsp. neglectum H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  HSC71819  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5954 Humboldt Six Rivers National Forest, saddle between two peaks E of Mt. Lassic 1768 Comment
  UCD100266  Polygonum douglasii Joseph P. Tracy 1947-8-24 17922 Humboldt Box Camp Trail, Trinity Summit. 1676 Comment
  UC1116240  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1947-7-9 17835 Humboldt Horse Mountain Northern Coast Ranges 1432 Comment
  UC1222470  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1912-7-31 3941 Humboldt Buck Mountain Northern Coast Ranges (near summit) 1676 Comment
  UC1101153  Polygonum lapathifolium Malcolm A. Nobs and S. Galen Smith 1949-8-9 1234 Humboldt Town of Blue Lake; pond on s side Comment
  CHSC10117  Polygonum paronychia J. W. Johnson 1962-2-15 1152 Humboldt Arcata. In Hollow 3 South near foot of Dune 3 North, Christenson Farm Samoa Peninsula.. Comment
  HSC49614  Polygonum paronychia R. York 1979-5-18 296 Humboldt Stabilized dunes opposite the Louisiana Pacific mill in Samoa Comment
  HSC55283  Polygonum polygaloides subsp. kelloggii Overton, Butler 1979-8-2 12711 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CDA2917  Polygonum sachalinense T. C. Fuller 1962-8-6 9364 Humboldt South side of Highway 299 to Willow Creek just east of road to Bald Mountain, 11.2 miles east of Blue Lake. 0 Comment
  CDA2919  Polygonum sachalinense T. C. Fuller 1960-8-25 4973 Humboldt Northwestern; Outer North Coast Ranges region; West of Highway 101, 0.25 mile north of Humboldt Hill Road, Eureka. 0 Comment
  HSC98684  Polygonum sawatchense subsp. sawatchense Cara Witte 2007-6-20 312 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  CAS-BOT-BC71830  Polypodium californicum Donald Branscomb 1958-12-1 s.n. Humboldt Trinidad Comment
  CAS-BOT-BC71831  Polypodium californicum Ira L. Wiggins 1957-6-21 14141 Humboldt E side of road, 1 mi. S of Garberville Comment
  CAS-BOT-BC76844  Polypodium glycyrrhiza Donald Branscomb 1959-2-1 s.n. Humboldt Trinidad Comment
  CAS-BOT-BC76870  Polypodium glycyrrhiza Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  RSA46707  Polypodium glycyrrhiza Doris K. Kildale 1929-3-10 6942 Humboldt Bug Creek Comment
  CAS-BOT-BC76841  Polypodium glycyrrhiza Volney Rattan 1903-1-1 s.n. Humboldt Above Mad River. Comment
  CHSC27876  Polypodium scouleri Sam M. Grossberg 1978-3-11 1 Humboldt Sequoia City Park, Eureka, ca. 100 yds s of U Street entrance. 22 Comment
  CAS-BOT-BC232957  Polypogon australis Peter Rubtzoff 1968-9-4 5959 Humboldt Goulds Bar, S Fork Eel River SE of Weott Comment
  UC39737  Polypogon interruptus Harley P. Chandler June, 1901 1332 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 304 Comment
  CAS-BOT-BC233215  Polypogon maritimus Joseph P. Tracy 1930-10-19 9236 Humboldt Eel River, Alton to Fortuna 15 Comment
  HSC62871  Polypogon monspeliensis J. M. DiTomaso 1979-4-21 887 Humboldt Clam Beach. Comment
  HSC89907  Polypogon monspeliensis Leonel Arguello 1989-5-27 Humboldt Lanphere-Christensen Dunes Preserve 3 miles W of Arcata. End of Saltmarsh trail. Comment
  UC1714513  Polypogon monspeliensis Joseph P. Tracy 1916-5-31 4692 Humboldt along Eel River from South Fork to Scotia Holmes Flat; Northern Coast Ranges, along Eel River 60 Comment
  HSC65985  Polystichum imbricans Gail Newton 1980-7-23 1714 Humboldt Near Packsaddle Ridge 1463 Comment
  CAS-BOT-BC76763  Polystichum imbricans subsp. imbricans L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road. Comment
  RSA247492  Polystichum munitum Gary D. Wallace 1966-9-12 703 Humboldt Along Hwy. 299 E of Arcata near Willow Creek; Comment
  HSC35693  Polystichum munitum Thomas W. Nelson 1975-1-16 1749 Humboldt E of HSU campus 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
  RSA171967  Populus trichocarpa Robert F. Thorne 1957-9-2 18990 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC1222285  Populus trichocarpa Joseph P. Tracy 1950-8-8 19290 Humboldt Croghen Hole on Trinity Summit (at head of hole, edge of rock area); on Trinity Summit, Croghan Hole 1676 Comment
  HSC49611  Potamogeton natans R. York 1979-4-16 234 Humboldt Between Arcata and Eureka along Hwy. 101 Comment
  POM145402  Potamogeton natans J. B. Feudge 1923-7-23 449 Humboldt Lagoon at Trinidad. 0 Comment
  RSA54124  Potamogeton natans Henry M. Pollard 1946-8-16 s.n. Humboldt Near Camp Creek, Orleans region. Comment
  UC1099846  Potamogeton natans Malcolm A. Nobs, S. Galen Smith 1949-8-9 1229 Humboldt 1 mi n of Arcata (at junction of Highways 101 and 299); Mad River Valley Comment
  HSC92714  Potamogeton pusillus R. York 1977-10-22 54 Humboldt Behind Fieldbrook School Comment
  SEINET11663841  Potamogeton pusillus S. K. Harris 1938-1 808 Humboldt Eel River, near Fernbridge Comment
  BLMAR306  Potentilla anserina subsp. pacifica Jennifer Anthony-Wheeler 2002-7-1 306 Humboldt South Spit 6 Comment
  UC1321457  Potentilla anserina subsp. pacifica Arne Henrik Rousi 12 Humboldt Comment
  RSA21017  Potentilla anserina var. grandis Carl B. Wolf 1937-9-12 9326 Humboldt Dry Lagoon State Park. 5 Comment
  RSA232639  Potentilla anserina var. grandis Larry E. DeBuhr, Gary D. Wallace 1972-5-22 609 Humboldt On the beach at Prairie Creek. Redwoods Sate Park Comment
  HSC102139  Potentilla glandulosa subsp. glandulosa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1043 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC100560  Prosartes hookeri Carl C. Marshall Apr 1887 392 Humboldt Hoopa Valley. Comment
  HSC103987  Prosartes smithii E. R. Fyer 2015-4-29 31 Humboldt Arcata Community Forest 129 Comment
  UCSB27862  Prosartes smithii Phelps, M. 1972-3-20 Humboldt 0.5 mi. south of Redway on Old Hwy. 101, 1000 yds. from road toward river 182 Comment
  SEINET13947097 Image available Prunella vulgaris W. J. Ferlatte, B. D. Rogers 1966-1 2083 Humboldt 1 mi E of Forest Glen; 2400 ft alt., T29E, R8E, SEC19 732 Comment
  JEPS62490  Prunella vulgaris var. lanceolata Joseph P. Tracy 1934-7-14 13403 Humboldt along Mad River near Blue Lake; along Mad River near Blue Lake 15 Comment
  UC1402050  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-19 630 -20 Humboldt Comment
  CAS-BOT-BC159983  Prunus emarginata Doris K. Kildale; L. B. Kildale 1930-5-5 9554 Humboldt Bug Creek, Chaparral Mt. Comment
  CAS-BOT-BC159984  Prunus emarginata Doris Kildale Gillespie 1931-6-7 10593 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  UC14175  Prunus virginiana var. demissa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  UC582512  Pseudognaphalium californicum Joseph P. Tracy 1937-7-11 15415 Humboldt vicinity Garberville 121 Comment
  CAS-BOT-BC357602  Pseudognaphalium stramineum Carl B. Wolf 1927-8-29 1223 Humboldt Seacoast, Devil's Gate, south of Cape Mendocino Comment
  HSC56460  Pseudognaphalium stramineum Griswold, Butler 1979-7-12 7244 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  BLMAR704  Pseudognaphalium stramineum Jennifer Anthony-Wheeler 1994-9-8 704 Humboldt Samoa dunes, growing atop a knoll/dune with I the Samoa Pen. Rare plant area 15 Comment
  JEPS20501  Pseudognaphalium stramineum Lincoln Constance 1934-5-26 665 Humboldt s end Dyerville Bridge (sand and gravel bar of river); South Fork Eel River 45 Comment
  UC484076  Pseudotsuga menziesii Carl B. Wolf 1930-10-29 1785 Humboldt Old Coast Road 7 mi s Honeydew P.O. 304 Comment
  RSA254796  Psilocarphus tenellus var. tenellus Thomas W. Nelson, James Nelson 1973-5-28 970 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC54542  Pteridium aquilinum var. pubescens Walter Overton, Butler 1979-7-23 9526 Humboldt Near Titlow Hill, close to the town of Willow Creek 1280 Comment
  HSC38325  Pteridium aquilinum var. pubescens J. D. Ackerman 1975-9-15 744 Humboldt Arcata, behind Fern Ln. E of Humboldt State University Comment
  UC672932  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  HSC90883  Puccinellia nutkaensis Leonel Arguello 1989-6-24 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata; 30 yards from Salt Marsh Trail. Comment
  OBI22190  Puccinellia nutkaensis Joseph P. Tracy 1950-6-17 18834 Humboldt Eureka Comment
  CAS-BOT-BC460594  Pyrola aphylla Doris K. Kildale 1926-6-27 2187 Humboldt Sweasey Lake, McClellan Mountain 822 Comment
  CAS-BOT-BC462868  Pyrola asarifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC462869  Pyrola asarifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC63482  Pyrola asarifolia subsp. asarifolia M. A. Baker 1979-6-6 362 Humboldt 1.5 km N of Post Office on Patrick's Point Drive, Trinidad Comment
  POM209002  Pyrola bracteata Lincoln Constance 1934-6-8 835 Humboldt Cow Cr. fire-trail, Bull Cr. watershed, Humboldt Redwood Park. 457 Comment
  HSC49999  Pyrola dentata M. A. Baker 1979-6-7 792 Humboldt 1250 Comment
  HSC99085  Pyrola dentata Cara Witte 2007-6-26 355 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  HSC55055  Pyrola picta G. L. Clifton, Griswold 1979-7-31 11588 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa Comment
  CAS-BOT-BC466033  Pyrola picta Doris Kildale Gillespie 1931-6-7 10658 Humboldt South Fork Mt., Black Lookout 1726 Comment
  CAS-BOT-BC466034  Pyrola picta Doris K. Kildale 1927-7-23 3786 Humboldt Hoaglin Lake, near Lasseck's Peaks Comment
  CAS-BOT-BC62673  Quercus chrysolepis Doris K. Kildale 1926-3-21 1689 Humboldt McDowell Butte, Kneeland Prairie 914 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
  JEPS38040  Quercus chrysolepis Lincoln Constance 1934-6-15 885 Humboldt Summit of Grasshopper Peak South Fork Eel River, Bull Creek Region 975 Comment
  RSA178558  Quercus chrysolepis Joseph P. Tracy 1950-8-4 19256 Humboldt Summit of ridge northeast of the lookout station, Grasshopper Peak (in Bull Creek State Park) at head of Canoe Creek. Comment
  UCD82872  Quercus chrysolepis Rodney Gale Myatt 1971-9-21 1185 -14 Humboldt Near Orleans, northeast of Hoopa Reservation, along Klamath River. 185 Comment
  CAS-BOT-BC94313  Quercus garryana Doris K. Kildale 1928-7-1 5666 Humboldt Klamath River at Bluff Creek Comment
  UC1193249  Quercus garryana R. H. Neuns 1950-7-31 Humboldt Mail Ridge, e headwaters of Stuhead Creek Mail Ridge, Stuhead Creek 883 Comment
  HSC8266  Quercus kelloggii Doris K. Kildale 1926-9-9 2682 Humboldt Low Gap of Mad River at Black Oaks 747 Comment
  UCD165089  Quercus parvula var. shrevei Lois W. Weeth; Kerry Heise and John M. Tucker 2003-10-21 s.n. Humboldt 22 mi. from Garberville along Alderpoint Rd. 116 Comment
  UC1388987  Quercus sadleriana Milo S. Baker 1947-8-10 11896 Humboldt 16 mi ne Hoopa (along trail to Trinity Summit, from end of Forest Rd) 1371 Comment
  SBBG115525  Quercus sadleriana G. J. Muth 1972-8-15 1845 Humboldt near Big Hill Rd 1431 Comment
  HSC37839  Quercus vacciniifolia Thomas W. Nelson, Jane P. Nelson 1976-2-21 2245 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. W of Hoopa Comment
  HSC41254  Quercus vacciniifolia Brad Klipfel 1974-6-25 444 Humboldt Horse Mtn. Comment
  SEINET3136624  Quercus vacciniifolia R. W. Spellenberg 1990-7-10 10245 Humboldt Extreme E edge of co., 8 mi WSW of Salyer at 6 mi S of Berry Summit (on Calif. Hwy 299) on USFS 1, S4 T5N R4E 1372 Comment
  UC212981  Quercus vacciniifolia Joseph P. Tracy 1919-9-23 5286 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC36093  Ranunculus aquatilis George L. Williams 1962-4-20 Humboldt Beside Hwy. 101 near Mad River Comment
  UC162339  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1911-7-7 3395 Humboldt three mi nw junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC1196241  Ranunculus californicus Joseph P. Tracy 1901-4-14 1024 Humboldt Humboldt Bay Northern Coast Region (sand dunes of ocean beach) Comment
  JEPS55086  Ranunculus californicus Joseph P. Tracy 1916-4-30 4681 Humboldt Table Bluff Northern Coast Ranges, about Humboldt Bay 152 Comment
  SEINET13716687  Ranunculus californicus Unknown 1916-4-30 4681 Humboldt Around Humboldt Bay Comment
  BLMAR362  Ranunculus muricatus Clara Sander 2003-5-21 362 Humboldt South Spit, West side of road 9 Comment
  UC1196218  Ranunculus occidentalis J. P. Tracy 1901-5-30 1107 Humboldt Immediate vicinity of Eureka 0 Comment
  UC1196225  Ranunculus occidentalis Joseph P. Tracy 1921-4-24 5453 Humboldt Phillipsville Flat Northern Coast Ranges, South Fork of Eel River 91 Comment
  HSC97644  Ranunculus occidentalis var. occidentalis C. Witte 2007-5-8 12 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1397 Comment
  HSC39246  Ranunculus occidentalis var. occidentalis J. P. Smith, J. O. Sawyer 1976-5-2 8633 Humboldt Redwood Creek-Hoopa Rd., 0.6 mi. W of its junction with Loop Rd. in Hoopa Reservation 122 Comment
  HSC39419  Ranunculus occidentalis var. occidentalis Thomas W. Nelson, Jane P. Nelson 1976-6-15 2712 Humboldt Along trail from lookout to Blocksburg 1555 Comment
  JEPS79960  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  UC1542906  Ranunculus orthorhynchus var. orthorhynchus H. E. and S. T. Parks May 1930 755 Humboldt Laribee Valley Comment
  UC162870  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1908-6-7 2614 Humboldt Butler Valley Northern Coast Ranges, Mad River 152 Comment
  UC1042328  Ranunculus parviflorus John Thomas Howell 1954-4-25 29153 Humboldt Arcata Comment
  UC1196263  Ranunculus parviflorus Joseph P. Tracy 1942-6-2 17110 Humboldt roadside 2 mi n Bridgeville 457 Comment
  RSA97039  Ranunculus parviflorus J. T. Howell 1954-4-25 29153 Humboldt Garden weed, Arcata Comment
  HSC95591  Ranunculus repens Andrea Pickart 2002-3-31 24 Humboldt Arcata Marsh, Dan Hauser Marsh 0 Comment
  HSC39445  Ranunculus repens var. repens Linda M. Barker 1976-6-1 1555 Humboldt 3 mi. W of Arcata Comment
  HSC12337  Raphanus sativus Steve Dorei 1970-10-26 115 Humboldt Arcata, South G st. 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
  UC709447  Rhamnus californica subsp. occidentalis Joseph P. Tracy 1941-9-4 17012 Humboldt along Trinity Highway Willow Creek Canyon 609 Comment
  RSA1465  Rhamnus purshiana E. R. Johnson 1929-08 1410 Humboldt Arcata Redwood Park. 76 Comment
  UC726369  Rhamnus purshiana A. A. Heller 1923-7-9 13775 Humboldt 5 mi from Arcata (near Blue Lake) Comment
  SEINET2031087 Image available Rhododendron columbianum Joseph P. Tracy 1924-1 6728 Humboldt Big Lagoon 6 Comment
  RSA254755  Rhododendron macrophyllum Thomas W. Nelson 1974-5-7 1239 Humboldt Beside the old Kneeland Rd. Comment
  UC1537162  Rhododendron macrophyllum Gordon H. True Jr. 1936-5-12 474 Humboldt near Kneeland Post Office 762 Comment
  UCSB4803  Rhododendron occidentale Phillips, Priscilla 1958-6-7 Humboldt Highway 101, 14.1 mi. south of Prairie Creek Redwoods State Park (north of Trinidad) Comment
  UCSC000554  Rhododendron occidentale R. Stahelin 1933-7-26 s.n. Humboldt Eureka Comment
  UC1586906  Ribes Juha Pykala 1987-6-20 1849 Humboldt n House of Prof. D. H. Norris; Kneeland, Greenwood Heights 350 Comment
  UC492203  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  RSA24301  Ribes bracteosum Carl B. Wolf 1941-2-25 9958 Humboldt Freshwater lagoon. 30 Comment
  UC1046563  Ribes bracteosum R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3407 Humboldt near High Prairie (on long high ridge between Mad River and Redwood Creek); Bald Mountain 1066 Comment
  UC154115  Ribes bracteosum Joseph P. Tracy June 1904 2104 Humboldt near Falk's Mill (on Elk River); Northern Coast Region, Humboldt Bay 0 Comment
  UC303170  Ribes bracteosum Joseph P. Tracy 1923-8-19 6535 Humboldt at crossing Kneeland Road (Lawrence Creek); Northern Coast Ranges 609 Comment
  UC667076  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1939-4-27 16226 Humboldt Mouth Little River 6 Comment
  UC492206  Ribes inerme var. klamathense Joseph P. Tracy 1927-5-15 8039 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC667073  Ribes inerme var. klamathense Joseph P. Tracy 1939-5-6 16281 Humboldt opposite mouth Willow Creek (Lack Pond); Trinity River Valley 152 Comment
  HSC103226  Ribes lobbii Jade Paget-Seekins 2010-6-23 24 Humboldt Horse Mountain. Slightly less than 10 miles up Titlow Hill Road, on Forest Route 1. Near 'Road Narrows' sign. 1558 Comment
  HSC39629  Ribes lobbii Thomas W. Nelson, Jane P. Nelson 1976-6-15 2734 Humboldt Just W of Goat Hill along road off FS 2S08 1463 Comment
  UC1198925  Ribes lobbii Joseph P. Tracy 1936-8-8 15139 Humboldt ne Hawkins Bar.; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC673202  Ribes lobbii Lincoln Constance, Reed C. Rollins 1942-5-11 2864 Humboldt 8 mi e Blue Lake (near summit); North Coast Ranges Comment
  UC1198933  Ribes menziesii var. menziesii Joseph P. Tracy 1924-3-30 6636 Humboldt 3 miles west of Bridgeville; Northern Coast Ranges. 228 Comment
  UC1198948  Ribes roezlii var. amictum Joseph P. Tracy 1914-5-30 4487 Humboldt near Hydesville; Northern Coast Region of California, Van Duzen River 60 Comment
  CAS-BOT-BC212520  Ribes sanguineum Joseph P. Tracy 1949-4-10 18281 Humboldt Redwood Creek at Berry's 365 Comment
  HSC90030  Ribes sanguineum Andrew Enberg, Brad Penkala, Dan Scofield 1990-4-27 62 Humboldt Titlow Rd. 0.5 mi. S of its intersection with Hwy. 299 854 Comment
  UC1563694  Ribes sanguineum Barbara Ertter with Thomas J. Delendick 1987-5-16 6939 Humboldt ca. 3 mi e Berry Summit (on Hwy 299, on s side of road above Willow Cr., ca. 20 air mi e of Arcata) 800 Comment
  UC902087  Ribes sanguineum Joseph P. Tracy 1949-7-19 18380 Humboldt Grouse Mountain 1280 Comment
  HSC20338  Ribes sanguineum Eugene Andreuccetti 1964-5-2 32 Humboldt 3.25 mi. N of Tish Tang Ranger Station on Hwy. 96 Comment
  CAS-BOT-BC144680  Ribes sanguineum var. glutinosum L. B. Kildale 1930-9-9 10405 Humboldt Bald Mountain 914 Comment
  CAS-BOT-BC144688  Ribes sanguineum var. glutinosum Joseph Andorfer Ewan 1937-7-1 10444 Humboldt on river bench. Stephan Grove on Eel River, n. of Garberville Comment
  CAS-BOT-BC144689  Ribes sanguineum var. glutinosum C. Epling; Wm. Robison 1935-7-22 s.n. Humboldt Patrick's Point Comment
  HSC103217  Ribes sanguineum var. glutinosum Jade Paget-Seekins 2010-3-14 3 Humboldt McKinleyville, west end of Hiller Park. 10 Comment
  UC1198911  Ribes sanguineum var. glutinosum Joseph P. Tracy 1925-3-15 6946 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC1541335 Image available Ribes viscosissimum W. K. Parks July 1933 Humboldt South Fork Mountain Comment
  JEPS1248  Romanzoffia californica Joseph P. Tracy 1923-4-29 6196 Humboldt Kneeland Prairie 762 Comment
  HSC57635  Romanzoffia sitchensis G. L. Clifton, Griswold 1979-7-25 10793 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1103817  Romanzoffia tracyi Joseph P. Tracy 1940-5-18 16563 Humboldt 2 mi. n. Trinidad (coast bluff opposite Park's place) 3 Comment
  SEINET10638531 Image available Romanzoffia tracyi Joseph P. Tracy, Harold E. Parks 1933-5-9 Tracy 11008 Humboldt Wet slide on bluff near ocean. Vicinity of Trinidad. 15 Comment
  UC492262  Rorippa curvisiliqua H. E. Parks and Joseph P. Tracy 1931-5-17 9426 Humboldt Trinity River Valley Willow Creek; Northern Coast Ranges, Trinity River Valley nr Willow Creek 152 Comment
  CAS-BOT-BC147437  Rosa californica Joseph P. Tracy 1941-6-29 16965 Humboldt Buck Mountain 762 Comment
  JEPS47282  Rosa eglanteria W. L. Jepson 1936-8-15 17902 Humboldt Strongs station Van Duzen River, Grizzly Creek Comment
  BLMAR535  Rosa gymnocarpa Jennifer Wheeler 2009-6-23 535 Humboldt King range, On Paradise Ridge road Comment
  HSC99635  Rosa gymnocarpa T. Jimerson, J. Pageau 1979-6-13 543 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  CAS-BOT-BC146836  Rosa nutkana H. E. Parks; S. T. Parks 1937-5-1 5816 Humboldt Spruce Cove, Trinidad 60 Comment
  UC180188  Rosa nutkana var. nutkana Joseph P. Tracy 1914-5-30 4479 Humboldt Alton Northern Coast Region (same locality as Tracy #40000) 30 Comment
  CAS-BOT-BC148340  Rosa pisocarpa Alice Eastwood; John Thomas Howell 1937-6-23 4763 Humboldt Dinsmore's Comment
  CAS-BOT-BC148348  Rosa pisocarpa Doris K. Kildale 1931-6-6 10858 Humboldt Gans Prairie, Orick-Whitepec Road Comment
  UC154203  Rosa pisocarpa Joseph P. Tracy 1908-6 2873 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD17685  Rubus H. Olmo; T. S. Mallah 1953-4-3 53 58 Humboldt California. Humboldt County: 300 yards west of junction of State 1 and Redwood Highway, across from Justice Court of Long Valley. Comment
  HSC19650  Rubus leucodermis Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  HSC47658  Rubus parviflorus Sheila Logan 1978-4-10 178 Humboldt Redwood Park behind HSU campus Comment
  HSC56140  Rubus parviflorus G. L. Clifton, Griswold 1979-8-1 11961 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC77922  Rubus parviflorus L. P. Janeway, Paul Wilson 1984-5-7 768 Humboldt Near Coast Guard Station, N Spit of Humboldt Bay 3 Comment
  RSA523867  Rubus parviflorus G. H. True 1936-5-12 473 Humboldt 5 miles S of Kneeland. 457 Comment
  UC162331  Rubus parviflorus Joseph P. Tracy 1911-7-7 3432 Humboldt between Willow Creek and Campbell Creek (viz. Ridge n of Willow Creek, near the summit); Northern Coast Ranges, Brannan Mountain, n Willow Creek 1219 Comment
  CHSC94934  Rubus spectabilis K. Lang; J. Lang 2005-3-16 38 Humboldt Trinidad, N. California coast. 51 Comment
  JEPS44771  Rubus spectabilis Joseph P. Tracy 1923-4-15 6192 Humboldt at Berry's Northern Coast Ranges, Redwood Creek (Redwood Creek) 274 Comment
  UC14181  Rubus spectabilis W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  UC1199050  Rubus ursinus Joseph P. Tracy 1939-4-16 16210 Humboldt vicinity Carlotta; vicinity of Carlotta 30 Comment
  UCD17612  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 053 Humboldt California. Humboldt County: 6 miles from Dyerville junction of U.S. 101, on road to Weitchpec. Comment
  RSA89568  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
  HSC58183  Rudbeckia klamathensis G. L. Clifton, Griswold 1979-8-2 12271 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS39867  Rumex obtusifolius Milo S. Baker 1923-8-4 181 Humboldt s of Stone Lagoon Comment
  HSC17620  Rumex pulcher David K. Smith 1968-10-26 40 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  UC1541397  Rumex salicifolius var. salicifolius Harold E. Parks 1934-8 5166 Humboldt Big Lagoon Comment
  UC495729  Rupertia physodes Joseph P. Tracy 1930-6-15 8765 Humboldt near Blocksburg; Northern Coast Ranges 457 Comment
  HSC59504  Ruppia maritima M. A. Erickson 1979-5-23 305 Humboldt Arcata, creek adjacent to an abandoned logging pond at the S end of H St., Arcata Comment
  UCD92343  Rytidosperma penicillatum Ray Evans 1956-7-19 s.n. Humboldt Bear River, 3 miles east of Capetown. Comment
  HSC62891  Salicornia depressa J. M. DiTomaso 1979-5-20 1066 Humboldt Eureka Bay 3 mi. SW of Arcata on Samoa Rd. Comment
  CAS-BOT-BC132708  Salix A. T. Whittemore 1980-3-15 80 -008 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC132710  Salix A. T. Whittemore 1980-3-15 80 -004 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  RSA0034667  Salix coulteri Harold E. Parks 1931-3-25 0903 Humboldt Orick, Van Duzen River 6 Comment
  CAS-BOT-BC103814  Salix exigua Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01234 Humboldt On floodplain of the Van Duezn River, 1 1/2 miles east of Alton 30 Comment
  UC469442  Salix exigua var. hindsiana Joseph P. Tracy 1931-9-19 9673 Humboldt Van Duzen R. Alton; Northern Coast Region 30 Comment
  CAS-BOT-BC104098  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0975 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC104099  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0969 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC104106  Salix hindsiana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-17 01332 Humboldt channel of Trinity River, near bridge on Trinity Highway 152 Comment
  CAS-BOT-BC104116  Salix hindsiana Henry M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon Comment
  CAS-BOT-BC107677  Salix hookeriana John Johnson 1962-3-15 1132 Humboldt Lamphere Ranch, about 4 miles west of Arcata. Sand dune formation along beach Comment
  CAS-BOT-BC107703  Salix hookeriana Harold E. Parks 1931-5-12 952 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107713  Salix hookeriana Doris K. Kildale 1927-3-25 3003 Humboldt Near Buckspot School House 50 Comment
  CAS-BOT-BC107744  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1221 Humboldt In pine barrens near the coast, 1 mile north of Samoa Comment
  CAS-BOT-BC107773  Salix hookeriana Harold E. Parks; Susan T. Parks 1932-4-7 1103 Humboldt Little River Lagoon, Trinidad 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
  HSC40860  Salix hookeriana Linda M. Barker 1976-4-13 1380 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC6821  Salix hookeriana H. E. Parks 1931-3-24 912 Humboldt Along lower Eel River, near Fortuna Comment
  JEPS13089  Salix hookeriana Joseph P. Tracy 1936-10-24 15203 Humboldt Fortuna; bank of Eel River 15 Comment
  SD939  Salix hookeriana Harold E. Parks August 1931 1053 Humboldt Little River Lagoon Comment
  UC1196673  Salix hookeriana Joseph P. Tracy 1925-11-15 7315 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay (same region as #6929) 60 Comment
  UC1225776  Salix hookeriana Joseph P. Tracy 1948-4-4 17959 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC275498  Salix hookeriana Joseph P. Tracy 1925-10-11 7280 Humboldt near Kneeland Prairie (near Loren Frost place on Kneeland Rd.); Northern Coast Ranges 609 Comment
  UC490472  Salix hookeriana Joseph P. Tracy 1932-9-5 10771 Humboldt Mattole River near Petrolia; North Coast Region 15 Comment
  UC492344  Salix hookeriana Harold E. and Susan T. Parks 1932-4-10 1103 a Humboldt Little River Lagoon Trinidad Comment
  RSA0034665  Salix hookeriana var. tomentosa Harold E. Parks 1931-5-12 0952 Humboldt Samoa, Humboldt Bay. 0 Comment
  UC1196577  Salix lasiandra subsp. lasiandra J. P. Tracy 1901-3-31 995 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC107103  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt Redwood Creek, at Berry's 274 Comment
  CAS-BOT-BC107607  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-17 1323 Humboldt On west slpe of Berry's Mountain, east of Redwood Creek, on Trinity Highway 762 Comment
  CAS-BOT-BC107617  Salix lasiolepis Harold E. Parks 1931-9-26 9696 Humboldt Redwood Creek, at Berry's 274 Comment
  HSC93741  Salix lasiolepis Gordon Leppig 1998-4-7 734 Humboldt Horse Mtn., 854 Comment
  HSC96369  Salix lasiolepis Gordon Leppig 1999-4-15 1119 Humboldt Big Lagoon County Park, Big Lagoon Bog, W fen edge 3 Comment
  HSC98689  Salix lasiolepis Cara Witte 2008-9-13 1042 Humboldt Forest Service Road 4N38. 1/2 mile south of intersection to Tri Board Camp. 1506 Comment
  LA208773  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-12 1239 Humboldt Van Duzen River at Blue Slide 91 Comment
  LA208776  Salix lasiolepis Harold E. Parks; Joseph P. Tracy 1933-3-19 11006 Humboldt Van Duzen River, 2 mi. W of Bridgeville 228 Comment
  POM219356  Salix lasiolepis Joseph P. Tracy 1931-3-31 9327 Humboldt Redwood Creek. At Berry's. 274 Comment
  UC469413  Salix lasiolepis Joseph P. Tracy 1927-4-10 7888 Humboldt Redwood Creek, at Berry's 274 Comment
  UC469416  Salix lasiolepis Joseph P. Tracy 1927-8-7 8305 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC469420  Salix lasiolepis Joseph P. Tracy 1929-10-20 8681 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 701 Comment
  UC504020  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1254 Humboldt 2 mi E of Redwood Highway ( Mad River at Engelhart gravel pit, above Blue Lake) Comment
  UC506342  Salix lasiolepis Joseph P. Tracy 1933-4-9 10966 Humboldt Bridgeville, along Van Duzen River 228 Comment
  UC506507  Salix lasiolepis Joseph P. Tracy 1932-6-4 10126 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC512032  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1327 Humboldt e Redwood Creek (w slope of mt., on Trinity Hwy); Berry's Mountain 762 Comment
  UC519336  Salix lasiolepis Joseph P. Tracy 1933-5-20 12264 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC519350  Salix lasiolepis Joseph P. Tracy 1933-11-12 13116 Humboldt along S. Fork Eel R. Miranda; North Coast Ranges, S. Fork Eel R. 91 Comment
  UCD111589  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-17 01333 Humboldt Trinity River, near bridge on Trinity Highway. 152 Comment
  POM220140  Salix lasiolepis var. bigelovii H. E. Parks, Joseph P. Tracy 1931-5-17 976 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  CAS-BOT-BC107404  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-3-28 1678 Humboldt Redwood Creek near Berry's 289 Comment
  CAS-BOT-BC107414  Salix lasiolepis var. lasiolepis Henry M. Pollard 1945-9-4 s.n. Humboldt near Camp Creek, Klamath River Canyon Comment
  HSC102022  Salix lucida subsp. lasiandra M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 923 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC99455  Salix lucida subsp. lasiandra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 107 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
  SBBG22043  Salix lucida subsp. lasiandra R. F. Thorne 1957-9-2 18988 Humboldt Eel River, Burlington State Park, just S of Weott Comment
  CAS-BOT-BC125620  Salix melanopsis W. R. Dudley 1899-6-21 s.n. Humboldt Junction of North and South forks of Eel River Comment
  CAS-BOT-BC125628  Salix melanopsis Harold E. Parks 1931-5-14 0956 a Humboldt Van Duzen River above Bridgeville 300 Comment
  HSC20059  Salix melanopsis H. E. Parks 1931-5-14 961 Humboldt Van Duzen River, between Alton and Carlotta 15 Comment
  JEPS14789  Salix melanopsis Joseph P. Tracy 1933-6-11 12551 Humboldt S. Fork Eel River near Miranda; Northern Coast Ranges 60 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
  UC162708  Salix melanopsis Joseph P. Tracy 1911-7-4 3295 Humboldt Willow Creek near mouth <of> Trinity R.; Northern Coast Ranges, Willow Creek - tributary of Trinity R 182 Comment
  CAS-BOT-BC129134  Salix scouleriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1219 Humboldt 1 mile north of Samoa, approximately sea level. Comment
  CAS-BOT-BC129166  Salix scouleriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1219 Humboldt Near the coast, 1 mile north of Samoa, approximately at sea level. Comment
  UC1173630  Salix scouleriana Joseph P. Tracy 1937-3-21 15236 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  CAS-BOT-BC128959  Salix sitchensis Joseph P. Tracy 1933-7-16 12773 Humboldt South Fork Mountain; in wet meadow at McKay Camp. 1676 Comment
  HSC20106  Salix sitchensis H. E. Parks 1931-3-24 913 Humboldt Vicinity of Fortuna Comment
  HSC43418  Salix sitchensis R. Sutherland 1978-2-18 4 .18278 Humboldt S side Mattole River 8 Comment
  HSC79545  Salix sitchensis Kenneth Clark 1980-3-24 546 Humboldt Alluvial terrace of Dead Man's Gulch 15 Comment
  POM219562  Salix sitchensis H. E. Parks 1931-3-25 903 Humboldt Orick. Van Duzen River. 6 Comment
  SBBG21982  Salix sitchensis R. F. Thorne 1957-9-2 Humboldt Eel River at Burlington State Park, just S of Weott Comment
  UC1196703  Salix sitchensis Joseph P. Tracy 1933-3-5 10917 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R., Alton 30 Comment
  UC1225790  Salix sitchensis Joseph P. Tracy 1948-4-11 17972 Humboldt 3 mi. e. Dyerville (Eel R.); Eel R. 60 Comment
  UC146202  Salix sitchensis J. P. Tracy 1905-11-5 2397 Humboldt immediate vicinity Eureka 0 Comment
  UC490531  Salix sitchensis Joseph P. Tracy 1932-7-18 10724 Humboldt head of Brett Hole; Klamath Mts., Trinity Summit, Brett Hole 1828 Comment
  UC490534  Salix sitchensis Joseph P. Tracy 1932-7-13 10506 Humboldt wet meadow at Corral Prairie; Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC492341  Salix sitchensis Harold E. and Susan T. Parks 1932-4-12 1111 Humboldt on Van Duzen R. Blue Slide; Van Duzen R., Blue Slide 90 Comment
  UC511968  Salix sitchensis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1256 Humboldt 2 mi. e. of Redwood Hwy. and above Blue Lake Rd. (floodplain of Mad R.); Mad R., Engelhart gravel pit Comment
  UC709434  Salix sitchensis Joseph P. Tracy 1941-8-27 17036 Humboldt forest near McKay camp; S. Fork Mt. 1676 Comment
  SEINET4855902  Salix tracyi Unknown 1931-5-17 0976 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  RSA24053  Sambucus callicarpa C. B. Wolf 1941-2-22 9918 Humboldt Along Redwood Highway 2.8 miles south of Patricks Point State Park 30 Comment
  RSA86658  Sanguisorba officinalis subsp. microcephala F. W. Peirson 1941-7-28 13102 Humboldt About 10 miles below Patrick's Creek Camp Comment
  BLMAR57  Sanicula arctopoides Jennifer Anthony-Wheeler 1994-2-24 57 Humboldt Samoa dunes, growing in Samoa Dunes rare plant area in dune mat habitat 12 Comment
  HSC21611  Sanicula arctopoides R. D. Modafferi 1965-3-13 16 Humboldt 1 mi. N of Trinidad on Trinity St. 305 Comment
  UC1197109  Sanicula bipinnatifida Joseph P. Tracy 1927-5-8 7989 Humboldt Garberville 152 Comment
  UC642301  Sanicula bipinnatifida Joseph P. Tracy 1938-7-4 15985 Humboldt Valley of South Yager Creek 762 Comment
  HSC37847  Sanicula crassicaulis Peter Sorensen 1976-6-2 Humboldt Woodley Island, Humboldt Bay 1 Comment
  HSC82103  Sanicula crassicaulis Thomas W. Nelson, Jane P. Nelson 1980-5-25 5264 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  HSC96220  Sanicula crassicaulis April A. Allard, Gregory D. O'Connell 2005-6-8 4 Humboldt 0.4 mi. S of Hwy. 299 on Titlow Hill Rd. 854 Comment
  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
  UC1515012  Sanicula laciniata Bolander June 1867 6522 Humboldt Mattole River Comment
  HSC55291  Sanicula tuberosa Terry Griswold, Butler 1979-7-10 6264 Humboldt Near Board Camp Mountain 1372 Comment
  HSC73669  Sanicula tuberosa M. A. Baker 1980-7-15 2957 Humboldt Near Whiting Ridge. 1341 Comment
  POM232030  Satureja douglasii I. L. Wiggins 1930-7-11 4681 Humboldt Near Samoa. Comment
  JEPS79978  Saxifraga marshallii Joseph P. Tracy 1941-3-26 16834 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC441185  Saxifraga mertensiana Duart V. Brown 1947-3-25 7 Humboldt Bull Creek near Highway on Hoopa Valley Indian Reservation Comment
  SEINET3411481 Image available Saxifraga mertensiana Joseph P. Tracy 1922-4-30 6009 Humboldt Mouth of South Fork of Trinity river 152 Comment
  SEINET3991728  Schoenolirion Unknown 1926-6-20 Humboldt Horse Mtn. Comment
  RSA246889  Schoenoplectus acutus var. occidentalis Robert F. Thorne, Percy C. Everett 1965-8-9 35283 Humboldt Big Lagoon. 3 Comment
  HSC45967  Schoenoplectus tabernaemontani J. P. Smith 1973-5-26 6804 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC1100779  Scirpus cernuus Malcolm A. Nobs, S. Galen Smith 1949-8-11 1347 Humboldt marshes on eastern side Big Lagoon; marshes on eastern side Big Lagoon Comment
  CDA39126  Scirpus maritimus Gordon Leppig 1998-6-25 851 Humboldt Route 101, mile marker 81.60 Comment
  UC249744  Scirpus maritimus Joseph P. Tracy 1924-9-28 6907 Humboldt Centerville Northern Coast Ranges, Centerville (in tule swapm near the ocean beach) 3 Comment
  UC668015  Scirpus maritimus Joseph P. Tracy 1934-10-13 13684 Humboldt Big Lagoon Big Lagoon (near shore) 3 Comment
  HSC58796  Scirpus microcarpus Gilbert Muth 1979-7-31 11522 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  CDA39390  Scoliopus bigelovii Q. L. Holdeman 1963-2-2 s.n. Humboldt West side of Highway 101, just north of Redcrest. 0 Comment
  SEINET926248  Scoliopus bigelovii Joseph P. Tracy 1950-1 18611 Humboldt 1 mile west of Dinsmore's. Along Van Duzen River, opposite Buck Mountain. 762 Comment
  SEINET10548800  Scrophularia californica Charlene A. Bennett 1976-8-6 Bennett 480 Humboldt Collected by hwy 101, n side of orick, rocky area, densely forested by river. Comment
  CHSC68503  Scrophularia californica subsp. californica Vernon H. Oswald 1997-4-10 8318 Humboldt Road paralleling Hwy. 101 between Clam Beach and Little River State Beach, north of Arcata. 30 Comment
  UC1239705  Scutellaria antirrhinoides Joseph P. Tracy 1927-7-24 8296 Humboldt Mattole Valley 152 Comment
  JEPS62919  Scutellaria antirrhinoides W. L. Jepson 1902-7-1 1969 Humboldt near Berrys Ranch (Redwood Creek, Expedition from Ukiah to the Hupa Indian Reservation); Redwood Creek Comment
  SEINET6982183  Scutellaria antirrhinoides Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  UCD125670  Scutellaria antirrhinoides K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 457 Comment
  UC577340  Scutellaria californica Joseph P. Tracy 1937-7-11 15423 Humboldt vicinity of Garberville 121 Comment
  HSC35620  Scutellaria californica Thomas W. Nelson, B. Reinhardt 1975-7-30 2115 Humboldt E of Pilot Rock Comment
  UC25878  Scutellaria tuberosa C. C. Marshall 1888-1 Humboldt Comment
  UC1222179  Sedum Joseph P. Tracy 1950-6-8 18715 Humboldt bluffs at the Sand Cut Wildcat Road 2 mi s Ferndale; s of Ferndale 304 Comment
  UC1198838  Sedum laxum subsp. heckneri Joseph P. Tracy 1947-7-9 17865 Humboldt Horse Mountain Horse Mountain (on barren ledge of rock) 1432 Comment
Read comments
Aug 17 2011
  UC1198843  Sedum laxum subsp. heckneri Joseph P. Tracy 1944-7-3 17488 Humboldt along Trinity Highway (Willow Creek Canyon); Willow Creek Canyon 304 Comment
  UC667081  Sedum laxum subsp. heckneri Joseph P. Tracy 1935-7-30 14363 Humboldt Salmon Summit 1767 Comment
  UC302107  Sedum radiatum Joseph P. Tracy 1926-7-5 7726 Humboldt Valley of South Yager Creek Northern Coast Ranges, Valley South Yager Creek 762 Comment
  HSC92016  Sedum spathulifolium var. pruinosum E. Mackey 1987-9-7 Humboldt Patrick's Point State Park Comment
  SBBG19224  Selaginella oregana L. L. Kiefer 1963-8-6 769 Humboldt Patrick's Pt St Park, N side of Lookout Rock 45 Comment
  RSA170262  Selaginella oregana Joseph P. Tracy 1920-10-24 5407 Humboldt Near Korbel. 640 Comment
  JEPS37085  Senecio glomeratus W. L. Jepson 1902-6 1935 Humboldt Korbel to Angel's Ranch 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
  HSC6121  Senecio integerrimus var. major D. E. Anderson 1965-5-22 3727 Humboldt Hunt Ranch, 3-4 mi. N of Bridgeville Comment
  UC1199241  Senecio integerrimus var. major Joseph P. Tracy 1938-5-1 15728 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1223048  Senecio integerrimus var. major Joseph P. Tracy 1946-5-19 17537 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC364013  Senecio integerrimus var. major Thomas W. Nelson; Jane P. Nelson 1980-5-25 5250 Humboldt North Coast Ranges. Along road from Dinsmore to Anderson Crossing. McKeown Ranch road ca 100 m north of junction of road to Hindley Cabin 822 Comment
  UC1199492  Senecio minimus Joseph P. Tracy 1934-8-31 Humboldt Kneeland Prairie 762 Comment
  UC205168  Senecio minimus Joseph P. Tracy 1919-8-31 5185 Humboldt Eureka 0 Comment
  UCD135598  Senecio minimus P. B. Kennedy 1925-8-29 s.n. Humboldt northeast Eureka. Comment
  HSC74692  Senecio sylvaticus Gail Newton 1981-7-22 2266 Humboldt Near Bug Creek 1375 Comment
  UC1199236  Senecio sylvaticus Harold E. Parks and Joseph P. Tracy 1941-7-5 11491 Humboldt in woods near Coon Creek; Trinity River 152 Comment
Read comments
Jun 26 2012
  HSC103247  Senecio sylvaticus Jenny Moore, Tom Carlberg 2014-9-2 Humboldt Six Rivers National Forest, Denny Quad, Grizzly Camp Trailhead. 1409 Comment
  HSC56435  Senecio triangularis Griswold, Butler 1979-7-12 7150 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC99427  Senecio triangularis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 76 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC581709  Senecio triangularis Joseph P. Tracy 1930-7-16 8934 Humboldt in wet meadow at McKay Camp (South Fork Mountain); , McKay Camp 1676 Comment
  RSA168840  Senecio vulgaris Joseph P. Tracy 1943-11-28 17454 Humboldt Eel River bar at mouth of Van Duzen near Alton Comment
  SEINET11802700  Senecio vulgaris J. P. Tracy 1943-1 17454 Humboldt Eel River Bar at mouth of Van Duzen, near Alton Comment
  CAS-BOT-BC85845  Sequoia sempervirens Ronald J. Mastrogiuseppe 1966-11-1 s.n. Humboldt On flood plain of the Founders' Grove, Humboldt Redwoods State park Comment
  HSC34728  Sequoia sempervirens R. E. Cooksey Sep 1972 54 Humboldt Between Miranda and Phillipsville on Avenue of the Giants 30 Comment
  IRVC3682  Sequoia sempervirens R. H. Whittaker, W. A. Niering U Humboldt Humboldt Redwoods State Park. Comment
  NY64510  Sequoia sempervirens R. R. Wilson 1938-4-14 189 Humboldt Near Redway Comment
  UC1530712  Sequoia sempervirens R. W. Becking 1984-9-23 Humboldt Federation of Women's Grove Humboldt Co. Weott, Humboldt Redwoods State Park, Federation (Humboldt Co. Weott <sic>, Humboldt Redwoods State Park) Comment
  HSC98000  Sericocarpus oregonensis var. oregonensis Cara Witte 2007-8-1 610 Humboldt National Forest 1 on Kinsey Ridge. 1 1/2 miles north of White Oak Opening. 1256 Comment
  UCD92863  Setaria viridis A. H. Murphy 1948-9-1 s.n. Humboldt Cottral Ranch, Table Bluff. Comment
  CHSC40213  Sherardia arvensis L. P. Janeway 1984-5-13 775 Humboldt Along the Kneeland/Bridgeville Road ca 15 mi east of the Kneeland post office just past Lone Star Junction and near Lone Star Creek. 609 Comment
  POM203228  Sherardia arvensis M. S. Jussel 1931-5-2 s.n. Humboldt 20 mi. N. of Garberville. Comment
  HSC100571  Sidalcea diploscypha Carl C. Marshall Jun 1887 467 Humboldt S Humboldt. Comment
  CHSC96447  Sidalcea malachroides Gordon Leppig; Todd Treadwell 2005-6-8 2248 Humboldt Pacific Lumber Company land. Blue Slide Creek watershed. UTM Zone 10 NAD 1927, 419949E, 4482795N. 245 Comment
  HSC96276  Sidalcea malachroides Gordon Leppig 2002-5-22 1713 Humboldt Van Duzen River Watershed, Redwood House Rd. PALCO timberlands. 700 Comment
  UC18692  Sidalcea malachroides J. Burtt Davy 1899-6-13 5482 Humboldt Englewood Prairie North Coast Ranges, Englewood Prairie Comment
  UC35225  Sidalcea malachroides Chestnut and Drew 1888-7-8 Humboldt near Arcata; near Arcata Comment
  SEINET11982179  Sidalcea malviflora J. P. Tracy 1950-1 18738 Humboldt 7 mi S of Ferndale, Bear River Ridge 610 Comment
  UC668144  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1936-8-2 15062 Humboldt French Camp Ridge 1066 Comment
  BLMAR690  Sidalcea malviflora subsp. malviflora Jennifer Wheeler 2013-6-7 690 Humboldt King range, Windy Point 106 Comment
  JEPS67247  Sidalcea malviflora subsp. patula Milo S. Baker 1923-7-20 38 Humboldt Head of Yager Cr. Comment
  HSC23746  Sidalcea oregana Tim Baroni 1971-7-6 120 Humboldt 10 mi. S of Ferndale on Mattole Rd. Comment
  UC668141  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  HSC35031  Silene bolanderi Thomas W. Nelson, James Nelson 1975-5-24 1849 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC8435  Silene campanulata subsp. campanulata Bolander 1866-1 6517 Humboldt Red Mountain Comment
  HSC61770  Silene gallica Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  JEPS50880  Silene grayi Joseph P. Tracy 1926-6-20 7628 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  UC668082  Silene grayi Joseph P. Tracy 1932-7-12 10477 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  UC659353  Silene hookeri Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2612 Humboldt near Eureka; McClellan Mountain, near Eureka 822 Comment
  POM264849  Silene hookeri subsp. bolanderi Lincoln Constance, A. A. Beetle, Joseph P. Tracy 1940-5-17 2612 Humboldt Edge of Quercus Garryana grove, rocky knolls on N slope. McClellan Mtn, near Eureka 823 Comment
  BLMAR151  Silene laciniata subsp. californica Donald Hazlett 1994-6-7 151 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC389048  Silene laciniata subsp. californica Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC4168  Silene laciniata subsp. californica C. B. Wolf 1927-8-29 1196 Humboldt 7 mi. S of Ferndale and Capetown, Bear River Ridge, Mt. Glen Comment
  RSA168876  Silene verecunda subsp. platyota Joseph P. Tracy 1951-6-26 19586 Humboldt North side of Board Camp Mountain, at extreme head of Redwood Creek. 1541 Comment
  CAS-BOT-BC75285  Sisymbrium officinale Joseph P. Tracy 1933-8-22 12976 Humboldt Eureka. 60 Comment
  RSA246653  Solanum americanum Robert F. Thorne, Percy C. Everett 1965-8-5 35147 Humboldt Samoa Dunes. 3 Comment
  RSA424568  Solanum americanum T. S. Elias, Barbara A. Elias 1987-8-26 10629 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge Comment
  HSC21308  Solanum nigrum Francis Morrell 1949-5-30 35 Humboldt Weitchpec Comment
  UC1196152  Solanum umbelliferum Joseph P. Tracy 1935-7-20 14325 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1828 Comment
  RSA167235  Solanum umbelliferum Joseph P. Tracy 1950-6-18 18851 Humboldt Open places at edge of thicket, Briceland. Comment
  SEINET10872207  Solidago Mary Susan Taylor 1990-8-22 Taylor 6079 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  RSA245000  Solidago canadensis subsp. elongata William J. Ferlatte, B. D. Rogers 1966-8-15 3131 Humboldt North Bank Road, 2 miles north of Arcata. Comment
  HSC102169  Solidago elongata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1081 Humboldt Patterson Meadows 1555 Comment
  UC535089  Solidago elongata H. E. Parks 1931-7 1056 Humboldt Trinidad 76 Comment
  HSC46962  Solidago spathulata J. P. Smith, Thomas W. Nelson 1977-6-30 9219 Humboldt Samoa Peninsula just E of the drag strip. Comment
  RSA254746  Solidago spathulata Thomas W. Nelson 1971-11-11 598 Humboldt At the foot of Murray Road, McKinleyville. Comment
  UCSC000787  Solidago spathulata H. L. Person 1932-7-20 s.n. Humboldt Eureka, Field Brook, Tinriesia Forest Comment
  UC673079  Solidago velutina subsp. californica Joseph P. Tracy 1940-8-18 16702 Humboldt South Fork Eel River near Bolling Grove; South Fork Eel River 91 Comment
  CHSC52926  Soliva sessilis L. P. Janeway; Ken Berg 1984-4-11 721 Humboldt On the North Spit of Humboldt Bay; at the turnout along Samoa Rd across from the boat ramp just north of he Coast Guard Sta. 3 Comment
  HSC38348  Sonchus asper Peter Sorensen 1976-7-14 Humboldt North Spit Comment
  UC582434  Sonchus asper Joseph P. Tracy 1932-5-22 10115 Humboldt between Miranda and Redway; North Coast Ranges, South Fork Eel River 91 Comment
  UCD136156  Sonchus oleraceus Linda M. Barker 1976-6-1 1546 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA355701  Sparganium angustifolium subsp. emersum Walter Wisura, Dave Kelly 1986-7-30 4135 Humboldt North of Crannel on Louisiana Pacific Lumber Co. property; in pond ca. 1 mile beyond the gate. Comment
  CAS-BOT-BC235369  Spartina densiflora Ken Berg 1986-7-28 637 Humboldt Humboldt Bay, Arcata; foot of I Street Comment
  HSC103560  Spartium junceum Spadoni 2002-6-26 70828 Humboldt Along roadside in the vicinity of Garberville. Comment
  CAS-BOT-BC389921  Spergula arvensis Robert F. Thorne; P. Everett 1965-8-8 35265 Humboldt N edge of Eureka, E of Hwy. 101 4 Comment
  HSC4238  Spergula arvensis H. E. Parks May 1932 Humboldt Vicinity of Trinidad Comment
  UCD99184  Spergula arvensis Collector unknown 1925-6-7 1613 Humboldt Willow Camp. Comment
  HSC90751  Spergularia canadensis var. occidentalis Jean Hanson 1980-6-22 96 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  CDA18204  Spergularia macrotheca var. macrotheca G. D. Barbe, T. C. Fuller 1974-6-17 1830 Humboldt North Coast Ranges; Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  HSC45059  Spergularia rubra R. Sutherland 1978-5-12 6 .12578 Humboldt Mckee Flat 288 Comment
  RSA0098106  Spergularia rubra James Payne Smith 1976-5-27 8814 Humboldt Arcata, corner of 14th and G Street. Comment
  HSC49824  Spergularia salina R. York 1979-4-16 238 Humboldt E of the Emerson Mill along Samoa Blvd. Comment
  CAS-BOT-BC149614  Spiraea douglasii Alice Eastwood 1923-8-14 12323 Humboldt Samoa Comment
  HSC96475  Spiraea douglasii Gordon Leppig 1997-6-19 457 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  RSA85248  Spiraea douglasii F. W. Peirson 1923-7-11 3752 Humboldt 7 miles N of Arcata. Comment
  UC1196405  Spiranthes porrifolia Joseph P. Tracy 1942-6-15 17154 Humboldt Garberville 152 Comment
  JEPS64512  Spiranthes romanzoffiana W. L. Jepson 1921-8-11 9412 Humboldt Big Lagoon Comment
  RSA286353  Spiranthes romanzoffiana Robert F. Thorne 1974-7-29 45085 Humboldt Samoa Dunes: between Humboldt Bay and Pacific Ocean. Comment
  HSC62698  Spirodela polyrhiza Michelle Stevens 1979-5-18 120 Humboldt Ponds across from Clam Beach 0 Comment
  HSC98913  Stachys ajugoides Cara Witte 2007-7-11 490 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  HSC96495  Stachys chamissonis Gordon Leppig 1997-6-19 458 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  SD93024  Stachys chamissonis W. Bertsch 1953-7-30 230 Humboldt Highway 101, 5 miles north of Arcata. Comment
  UCLA54082  Stachys chamissonis H. Lewis 1940-7-3 Humboldt Little River Beach State Park Comment
  HSC14416  Stachys mexicana D. E. Anderson 1961-8-11 1727 Humboldt E of Humboldt State College campus. 30 Comment
  SBBG6537  Stachys rigida H. and M. Dearing 1939-6-23 3696 Humboldt 12 mi E of Arcata Comment
  SDSU7951  Stachys rigida var. rigida D. F. Howe 1964-8-7 3943 Humboldt Hoopa Valley 1067 Comment
  RSA118623  Stellaria media Marcus E. Jones 1924-4-26 s.n. Humboldt Fortuna. Comment
  UC162890  Stellaria media Harley P. Chandler May 1901 1266 Humboldt Redwood Belt; North Coast Ranges 152 Comment
  HSC12712  Stellaria media M. J. Athey 1970-11-20 1 Humboldt Along 1st. St. in Westhaven, Trinidad Comment
  HSC4271  Stellaria media S. R. Johnson 1965-3-23 17 Humboldt 1 mi. N of Luffenholtz Beach Comment
  POM174067  Stephanomeria virgata Joseph P. Tracy 1918-7-7 5039 Humboldt Garberville. 152 Comment
  HSC58409  Stipa lemmonii Terry Griswold, Marvin Butler 1979-7-10 7124 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  CAS-BOT-BC87607  Streptanthus tortuosus Doris K. Kildale 1928-5-27 5955 Humboldt Kneeland Prairie. 853 Comment
  UC229826  Streptanthus tortuosus Joseph P. Tracy 1922-9-3 6106 Humboldt rocky bluffs at Bluff Creek; Northern Coast Ranges, Klamath River 152 Comment
  UC673071  Streptanthus tortuosus Joseph P. Tracy 1940-7-7 16667 Humboldt rocky banks Grouse Mt. 1463 Comment
  UC673194  Streptanthus tortuosus Lincoln Constance and Reed C. Rollins 1942-5-12 2880 Humboldt bluffs at mouth of creek 6 mi ne Weitchpec; Klamath-Siskiyou Region, Bluff Creek 152 Comment
  UC1198798  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1913-6-17 4165 Humboldt near summit Northern Coast Ranges, Buck Mountain 1524 Comment
  UC492251  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9029 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  HSC35696  Streptanthus tortuosus var. tortuosus Thomas W. Nelson, B. Reinhardt 1975-7-30 2103 Humboldt Beside road out Whiting Ridge Comment
  HSC58202  Streptanthus tortuosus var. tortuosus Walter Overton 1979-8-1 12306 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1402 Comment
  UC1103496  Streptopus amplexifolius var. americanus Joseph P. Tracy 1949-6-25 18346 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC54897  Stuckenia filiformis subsp. alpina G. L. Clifton, Griswold 1979-7-25 10957 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  HSC58186  Swertia radiata G. L. Clifton, Griswold 1979-8-2 12275 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC73239  Symphoricarpos albus var. laevigatus M. A. Baker 1980-5-18 1320 Humboldt Near Black Mountain. 360 Comment
  HSC32242  Symphoricarpos mollis J. O. Sawyer 1970-6-24 2236 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC58128  Symphoricarpos mollis Gilbert Muth 1979-8-1 12121 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC58801  Symphyotrichum bracteolatum G. L. Clifton, Griswold 1979-7-31 11611 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC58804  Symphyotrichum bracteolatum G. L. Clifton, Griswold 1979-7-31 11705 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1199309  Symphyotrichum bracteolatum Joseph P. Tracy 1919-9-14 5209 Humboldt near mouth, (valley of Trinity River) Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  CHSC10151  Symphyotrichum chilense J. W. Johnson 1961-8-23 1048 Humboldt Arcata. Along the sides of the Lanphere County Road by Mad River Slough. Comment
  CAS-BOT-BC99160  Symphyotrichum chilense E. K. Balls 1950-7-17 14927 Humboldt Redwood Hwy, 4 mi. north of Loleta 7 Comment
  CAS-BOT-BC99161  Symphyotrichum chilense E. K. Balls 1950-7-17 14927 Humboldt Redwood Hwy, 4 mi. north of Loleta 7 Comment
  CAS-BOT-BC99167  Symphyotrichum chilense L. R. Abrams 1927-9-1 12063 Humboldt unspecified Comment
  HSC21150  Synthyris reniformis R. D. Modafferi 1965-3-13 13 Humboldt 1.2 mi. N of Trinidad on Trinity St. 0 Comment
  JEPS26264  Synthyris reniformis Joseph P. Tracy 1948-8-15 18116 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC582543  Synthyris reniformis Joseph P. Tracy 1923-3-10 6152 Humboldt Van Duzen River, near Grizzly Creek; Van Duzen River 91 Comment
  SEINET10473457  Tanacetum Mary Susan Taylor 1990-8-22 Taylor 6072 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  UC1173660  Tanacetum balsamita Joseph P. Tracy 1939-9-15 16500 Humboldt Eureka 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
  HSC90678  Tanacetum bipinnatum Gail Newton 1982-5-5 2523 Humboldt Elk River Wildlife Area, Eureka. Comment
  JEPS37129  Tanacetum camphoratum William S. Cooper 1925-7-30 123 Humboldt Little River Comment
  UC1302426  Tanacetum camphoratum Philip A. Munz 1963-6-13 24524 Humboldt Samoa Comment
  JEPS17996  Tanacetum camphoratum George B. Rossbach 1955-6-10 559 Humboldt between Fairhaven and end of point off Eureka (near Humboldt Bay (lagoon) and lighthouse) Comment
  SEINET4016798  Tanacetum camphoratum O. M. Clark 1932-1 663 Humboldt North Eureka. Comment
  SEINET11798896  Taraxacum laevigatum J. P. Tracy 1948-1 17973 Humboldt Trinity River at Willow Creek Comment
  JEPS36856  Taraxacum officinale Lincoln Constance 1934-6-12 864 Humboldt Bull Creek road and n bank of South Fork Eel River, Dyerville South Fork Eel River, Bull Creek Region, Dyerville Comment
  HSC49986  Tauschia glauca M. Andre' Baker 1979-6-7 787 Humboldt On N bank of the road to Snow Mt. 610 Comment
  HSC73247  Tauschia kelloggii M. A. Baker 1980-5-18 1311 Humboldt Near Black Mtn. 1006 Comment
  CAS-BOT-BC85208  Taxus brevifolia L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road Comment
  POM299136  Taxus brevifolia Joseph P. Tracy 1927-3-27 7865 Humboldt Willow Creek Canyon 762 Comment
  UC63993  Taxus brevifolia Mrs. M. H. Manning 1901-10-1 Humboldt Comment
  UC667096  Tellima grandiflora Joseph P. Tracy 1935-7-23 14163 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  BLMAR282  Tellima grandiflora Jennifer Anthony-Wheeler 1999-5-28 282 Humboldt King range, growing along prosper ridge of the strawberry rock grazing allotment 304 Comment
  UCSB24358  Tellima grandiflora Tracy, Joseph 1935-7-23 Humboldt Trinity Summit; Lower End of Brett Hole 1584 Comment
  UC160904  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1908-6 2714 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1196164  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1947-4-27 17672 Humboldt Metropolitan 30 Comment
  CAS-BOT-BC399767  Thalictrum polycarpum Alice Eastwood 1921-7-21 10669 Humboldt Vanduzen [Van Duzen] River, on the road Comment
  UC1198813  Thlaspi californicum Joseph P. Tracy 1921-5-30 5483 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC30092  Thuja plicata Chris Gist 1973-5-14 150 Humboldt HSC Campus S of Engineering Building Comment
  UC484081  Thuja plicata Carl B. Wolf 1930-10-25 1764 Humboldt 9 m above Blue Lake (along road to Willow Creek (Lord Ellis Road)) 243 Comment
  CAS-BOT-BC88328  Thysanocarpus curvipes Lincoln Constance; Reed C. Rollins 1942-5-12 2884 Humboldt Klamath-Siskiyou Region. Mouth of Bluff Creek, 6 miles northeast of Weitchpec. 152 Comment
  JEPS54121  Thysanocarpus curvipes W. L. Jepson 1934-5-7 16702 Humboldt Bull Creek; Buckeye Prairie, Bull Creek Comment
  HSC6995  Thysanocarpus curvipes E. C. Murczek 1964-4-4 27 Humboldt 8 mi. N of Hoopa Comment
  UC183553  Thysanocarpus curvipes Joseph P. Tracy 1913-6-11 4092 Humboldt in valley of Van Duzen River opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River, Buck Mt. 762 Comment
  UC668049  Thysanocarpus curvipes Joseph P. Tracy 1938-5-1 15736 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, at Willow Creek 152 Comment
  HSC97995  Tiarella trifoliata var. unifoliata Cara Witte 2007-7-11 492 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  RSA246667  Tiarella trifoliata var. unifoliata R. F. Thorne, Percy C. Everett 1965-8-5 35140 Humboldt Mt. Chamisal; Below summit. 534 Comment
  UC154149  Tiarella trifoliata var. unifoliata Mrs. M. H. Manning Sept. 1901 Humboldt near Hupa; near Hupa Comment
  UCR3923  Tiarella trifoliata var. unifoliata David Whistler, H. M. Whistler 1964-7-29 640729- 5 Humboldt 0.2 mi north of Meyers Flats on U.S. 101 75 Comment
  POM48093  Tiarella trifoliata var. unifoliata J. B. Feudge 1923-7-19 58 Humboldt Fortuna. 15 Comment
  HSC56107  Tolmiea diplomenziesii G. L. Clifton 1979-7-31 11858 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1198896  Tolmiea diplomenziesii Joseph P. Tracy 1925-11-25 7328 Humboldt near The South Fork (Trinity River Valley); Northern Coast Ranges 182 Comment
  UC1222359  Tolmiea diplomenziesii Joseph P. Tracy 1950-6-15 19040 Humboldt vicinity Willow Creek (near mouth of Raccoon Creek, 1 mi ne of Patterson's Ranch) Comment
  UC154137  Tolmiea diplomenziesii Joseph Burtt Davy and Walter C. Blasdale 1899-5 5628 Humboldt Bald Mt.; North Coast Ranges Comment
  CAS-BOT-BC447610  Tolmiea menziesii Harley P. Chandler 1901-5-1 1268 Humboldt Redwood Belt 457 Comment
  CAS-BOT-BC447609  Tolmiea menziesii Volney Rattan 1883-6-1 s.n. Humboldt Humboldt County Comment
  SEINET12221295  Tolmiea menziesii H. P. Chandler 1901-1 1268 Humboldt North Coast Ranges 457 Comment
  HSC84015  Tonella tenella L. P. Janeway 1983-4-30 241 Humboldt At E Fork USFS Campground, canyon bottom 473 Comment
  RSA80427  Tonella tenella Margaret Stason 1938-4-14 12410 Humboldt Few miles east of Arcata on Weaverville Road. Comment
  UC668182  Toxicodendron diversilobum Joseph P. Tracy 1937-5-30 15301 Humboldt 5 mi. n. Blocksburg (Larrabee Creek); Larrabee Creek 365 Comment
  HSC56236  Trautvetteria caroliniensis Walter Overton 1979-8-1 12318 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC535719  Trichostema lanceolatum Eleanor Armstrong 1934-7-15 1128 Humboldt Richardson Grove 121 Comment
  HSC53982  Trichostema oblongum Griswold, Butler 1979-7-11 7057 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  UC1223386  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1936-5-29 14819 Humboldt French Camp Comment
  UC1103431  Trifolium barbigerum Joseph P. Tracy and Ernest B. Babcock 1912-5-12 3636 Humboldt Eureka Northern Coast Ranges Comment
  UC1223516  Trifolium barbigerum Joseph P. Tracy 1933-5-20 12240 Humboldt Petrolia Mattole Valley Comment
  UC16424  Trifolium barbigerum Harley P. Chandler May, 1901 1102 Humboldt Humboldt Bay; North Coast Ranges Comment
  HSC34958  Trifolium bifidum Thomas W. Nelson 1975-5-24 1872 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC16435  Trifolium bifidum var. decipiens Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5342 B Humboldt Harris Comment
  HSC100529  Trifolium ciliolatum Carl C. Marshall Jun 1887 476 Humboldt Near Jewett Creek. Comment
  HSC100530  Trifolium depauperatum Carl C. Marshall May 1887 436 Humboldt Kneeland Prairie. Comment
  UC1103438  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1921-5-30 5481 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC70358  Trifolium dubium M. A. Baker 1980-6-7 1867 Humboldt Near Ammon Creek 732 Comment
  JEPS65857  Trifolium dubium Joseph P. Tracy 1916-5-31 4699 Humboldt along Eel River (from South Fork to Scotia); Northern Coast Ranges 60 Comment
  JEPS66053  Trifolium dubium W. L. Jepson 1902-6-24 1923 Humboldt Eureka to Arcata Comment
  UC631194  Trifolium dubium Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  HSC45106  Trifolium dubium R. Sutherland 1978-5-16 6 .16578 Humboldt 157 Comment
  RSA135394  Trifolium eriocephalum subsp. eriocephalum Volney Rattan 1878-1 s.n. Humboldt Kneeland Prairie. Comment
  HSC99715  Trifolium eriocephalum subsp. eriocephalum Glenn W. K. Shelton 2010-7-19 25 Humboldt Big Hill Rd., switchback in road 1256 Comment
  UC16713  Trifolium eriocephalum var. eriocephalum J. Burtt Davy 1899-6-7 5385 Humboldt near Harris; North Coast Ranges Comment
  HSC15123  Trifolium fucatum R. A. Rasp 1964-5-17 38 Humboldt 1 mi. S of Arcata beside Hwy. 101 Comment
  HSC43108  Trifolium fucatum Maralyn O'Meara 1974-5-14 360 Humboldt Along Hwy. 36, 7.1 mi. E of Bridgeville Comment
  UCD109057  Trifolium fucatum W. A. Williams 1951-6-1 s.n. Humboldt Humboldt County. Comment
  SEINET12147901  Trifolium fucatum var. virescens J. P. Tracy 1950-1 18747 Humboldt Cape Ridge, 1 mi E of Cape Mendocino 152 Comment
  RSA168859  Trifolium hybridum Joseph P. Tracy 1938-6-15 15926 Humboldt Salmon Creek Flats, south end Humboldt Bay. Comment
  HSC100251  Trifolium incarnatum J. P. Smith, & J. O. Sawyer 2010-5-2 12808 Humboldt Along Hwy. 96, N of Orleans 140 Comment
  UC495659  Trifolium longipes var. oreganum Joseph P. Tracy 1930-7-23 9136 Humboldt Horse Ranges Northern Coast Ranges Comment
  UC495662  Trifolium macraei Joseph P. Tracy 1932-5-10 9935 Humboldt Bear River edge Northern Coast Ranges 609 Comment
  SEINET7097947  Trifolium macrocephalum A. G. Vestal 1937-1 s.n. Humboldt Ca. 14 miles south of Garberville on Route 101. UTM Zone 10, 433343 mE, 4422303 mN. Lat. 39 57' 00ao N, Long. 123 46' 49ao W NAD 27 (Converted to WGS84 decimal degrees) Comment
  UC1541587  Trifolium microcephalum Harold E. Parks May 1935 5539 Humboldt Spruce Cove Trinidad Comment
  UCSC000413  Trifolium microcephalum H. S. Yates 1936-6-18 5734 Humboldt 2 miles N. of Big Lagoon - Rocky Pt. 30 Comment
  HSC95594  Trifolium microdon Andrea Pickart 2002-5-13 102 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  UC1197541  Trifolium microdon J. P. Tracy 1910-5-22 3139 Humboldt Eureka vicinity 0 Comment
  UC1223344  Trifolium microdon Joseph P. Tracy 1933-5-28 12406 Humboldt Ocean View Cemetery Eureka Comment
  UC1103443  Trifolium oliganthum Joseph P. Tracy 1921-4-24 5460 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  UC1197043  Trifolium pratense Joseph P. Tracy 1911-6-25 3264 Humboldt Eureka Northern Coast Region 0 Comment
  POM277936  Trifolium pratense Lyman D. Benson 1928-7-10 426 Humboldt Fortuna 30 Comment
  HSC15170  Trifolium repens J. L. Baker 1965-4-24 16 Humboldt 4 mi. N of Arcata on N. Bank Rd., Humboldt Meridian Comment
  RSA249709  Trifolium repens Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35250 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  HSC84044  Trifolium subterraneum L. P. Janeway 1983-4-30 240 Humboldt 21 Comment
  UC1223543  Trifolium variegatum var. pauciflorum Joseph P. Tracy 1933-5-20 12241 Humboldt Petrolia Northern Coast Ranges, Mattole Valley Comment
  UC1197563  Trifolium variegatum var. variegatum Joseph P. Tracy 1927-6-5 8103 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC1223308  Trifolium variegatum var. variegatum Joseph P. Tracy 1942-6-15 17121 Humboldt Englewood Prairie Comment
  CDA14904  Trifolium vesiculosum P. Haggard 1998-9-14 s.n. Humboldt on Hwy 101 nr. Orick. 0 Comment
  UC1223314  Trifolium willdenovii Joseph P. Tracy 1936-6-9 14910 Humboldt near Hadley Place (upper valley); Norhern Coast Ranges, Mattole Valley Comment
  UC1197511  Trifolium willdenovii Joseph P. Tracy 1932-5-17 10092 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1197533  Trifolium willdenovii J. P. Tracy 1900-6-4 868 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC15190  Trifolium wormskioldii R. E. Hafenfeld 1965-5-9 24 Humboldt Jct. County Rd. and Gold Bluff Beach Rd. Comment
  HSC15188  Trifolium wormskioldii J. W. Johnson 1962-5-13 1353 Humboldt Arcata, Christenson Farm on the Samoa Peninsula Comment
  UC1197038  Trifolium wormskioldii Joseph P. Tracy 1913-6-25 4336 Humboldt Dinsmore's Ranch Northern Coast Ranges (in valley of Van Duzen River opposite Buck Mtn) 762 Comment
  HSC36261  Triglochin maritima John Rehling 1974-8-20 23 Humboldt Big Lagoon Bog Comment
  UC30093  Trillium albidum Mrs. M. H. Manning Apr., 1902 Humboldt near Hupa Hupa Comment
  CAS-BOT-BC133396  Trillium ovatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  HSC34647  Trillium ovatum Thomas Anthony 1975-4-7 1 Humboldt 0.5 mi. N of Myers Flat on Avenue of the Giants Comment
  SD56735  Trillium ovatum Darley F. Howe 1963-5-26 Humboldt 3.7 miles east of Orick, on Bald Hill Road. 487 Comment
  CAS-BOT-BC521320  Trillium rivale J. H. Thomas 1949-6-12 897 Humboldt 2 miles west of Matins Ferry on road to Orick. Comment
  SEINET10458968  Triodanis biflora Chesnut CHESNUT s.n. Humboldt KNEELAND, CAMPBELLS Comment
  SEINET10459937  Triodanis perfoliata Willis L. Jepson Jepson 1940 Humboldt REDWOOD CREEK Comment
  UC169335  Triodanis perfoliata Joseph P. Tracy July, 1908 2912 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt and Trinity Counties); Northern Coast Ranges, ridge btw Van Duzen and Mad Rivers 914 Comment
  CHSC70841  Triphysaria eriantha subsp. rosea Vernon Oswald 1998-4-16 8916 Humboldt Samoa Boat Ramp County Park on the North Spit of Humboldt Bay. Growing along New Navy Base Rd. fronting the park. 6 Comment
  HSC104280  Triphysaria pusilla Samantha E. Andres 2016-5-14 8 Humboldt Lyons Ranch Trailhead, along Bald Hills Rd. 793 Comment
  CHSC1822  Triphysaria versicolor subsp. faucibarbata V. Holt 1941-5-30 Humboldt Comment
  UC1222443  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1935-5-25 13851 Humboldt Fort Seward 106 Comment
  JEPS26252  Triphysaria versicolor subsp. versicolor J. P. Tracy 1900-6-25 863 Humboldt immediate vicinity Eureka; immed vicinity of Eureka 0 Comment
  HSC13409  Trisetum canescens R. Long 1964-5-16 Humboldt Tish-tang Ranger Station near Willow Creek Comment
  HSC9982  Trisetum cernuum W. F. Cartwright 1965-4-23 65 Humboldt 3 mi. E of Arcata on Fickle Hill Rd. Comment
  SEINET8719521 Image available Trisetum cernuum Unknown 1952-1 7551 Humboldt Spruce Grove, Trinidad. Comment
  UC187230  Trisetum flavescens J. P. Tracy 1911-7-12 3527 Humboldt Blue Lake 60 Comment
  HSC3061  Triteleia laxa D. E. Anderson 1962-7-14 2251 Humboldt 2 mi. W of Kneeland Post Office Comment
  CDA2565  Triticum aestivum Gordon Leppig, Sylvia Leppig, K. Neander 2000-4-14 1293 Humboldt East of Community Center parking lot, Arcata. Comment
  HSC95905  Tsuga heterophylla Will Ferrand 2001-6-17 6 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  OBI17879  Tsuga heterophylla Wallace Weber, John C. Cooke, D. J. Pinkava, & David J. Keil 1969-8-19 2213 Humboldt 24.9 mi W of Humboldt County line on Rte 299 Comment
  OBI33131  Tsuga heterophylla David J. Keil 1983-7-2 17305 Humboldt Freeway exit from US 101 at Patrick's Point Comment
  UC615043  Tsuga heterophylla Beryl O. Schreiber 1934-6-5 1133 Humboldt 15 mi e of Blue Lake (road to Redding, wooded slope) Comment
  HSC14489  Umbellularia californica Francis Winter 1960-4-24 Humboldt 2 mi. NE of Redwood Creek Ranch 610 Comment
  HSC49911  Umbellularia californica Maralyn O'Meara 1973-2-9 123 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  JEPS9172  Utricularia macrorhiza Joseph P. Tracy 1930-8-3 9146 Humboldt on old rd. to Dinsmore's (pond near Little Van Duzen R.) 762 Comment
  RSA46868  Vaccinium cespitosum Doris K. Kildale 1927-7-10 3725 Humboldt Gans Prairie, Bald Hills. Comment
  HSC28133  Vaccinium ovatum J. D. Ackerman, A. M. Montalvo 1973-3-27 45 Humboldt 1.5 mi. N of Manila Comment
  HSC79432  Vaccinium ovatum Kenneth Clark 1981-4-5 1301 Humboldt Above S fork Dead Man's Gulch 114 Comment
  POM285981  Vaccinium ovatum Lyman Benson 1929-7-16 1837 Humboldt Weott Ranger Station. Comment
  UC154182  Vaccinium ovatum Harley P. Chandler Jun 1901 1397 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Valley 152 Comment
  UCD118109  Vaccinium ovatum T. I. Storer 1931-7-1 2221 Humboldt Coast. Comment
  HSC31487  Vaccinium parvifolium Steve Selva, Roger Jensen 1974-8-28 97 Humboldt Behind Humboldt State University, Arcata. Comment
  HSC7924  Vaccinium parvifolium P. Markle 1962-5-3 18 Humboldt Arcata Community behind HSU campus 30 Comment
  UC154041  Vaccinium parvifolium J. P. Tracy 1907-5-20 2563 Humboldt Immediate vicinity Eureka 0 Comment
  UC22217  Vaccinium parvifolium Harley P. Chandler May 1901 1182 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  JEPS66684  Vaccinium uliginosum subsp. occidentale Joseph P. Tracy 1935-7-26 14262 Humboldt Water Dogs Lake Trinity Summit 1828 Comment
  HSC48405  Valeriana sitchensis subsp. sitchensis Brad Klipfel 1973-6-10 108 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CHSC53306  Vancouveria hexandra L. P. Janeway 1984-5-13 782 Humboldt Along Redwood House Road ca 1 1/2 mi from Hwy 36. 228 Comment
  HSC68321  Vancouveria hexandra J. P. Smith 1973-5-26 6841 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC99463  Vancouveria hexandra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 117 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC854707  Vancouveria hexandra Elizabeth Parsons Hawver June 1915 Humboldt Carlotta Comment
  HSC97944  Vancouveria hexandra Cara Witte 2007-6-21 325 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1430 Comment
  CAS-BOT-BC76095  Vancouveria planipetala Alice Eastwood; John Thomas Howell 1937-6-22 4720 Humboldt Near Harris. Comment
  HSC44512  Vancouveria planipetala Brad Klipfel 1973-7-1 122 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA438026  Vancouveria planipetala Miss Hutchinson s.n. Humboldt Unspecified. Comment
  UC161073  Vancouveria planipetala Joseph P. Tracy 1911-7-7 3420 Humboldt Brannan Mountain viz. ridge n of Willow Creek between Willow and Campbell Creeks (near the summit); Northern Coast Ranges, Brannan Mountain, n Willow Creek 1219 Comment
  UCR52470  Vancouveria planipetala J. O. Sawyer, R. J. Cole 1977-7-3 3003 Humboldt Environs of Mud Sprng. Big Hill Road (F.S. 8N01) 1246 Comment
  UCD95098  Vancouveria planipetala H. P. Olmo 1928-6-10 s.n. Humboldt Wooley Creek. Comment
  HSC57172  Veratrum insolitum Overton, Butler 1979-7-26 9981 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC45597  Veronica americana Diane L. Reed 1978-5-27 136 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  POM283821  Veronica americana Lyman D. Benson 1928-7-10 441 Humboldt Clam Beach, Trinidad. Comment
  RSA46832  Veronica americana Doris K. Kildale 1926-5-9 1988 Humboldt Kneeland Prairie. Comment
  HSC28222  Veronica americana John R. Keith 1973-5-15 Humboldt Abandoned log pond about 200 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  HSC98613  Veronica arvensis Cara Witte 2007-6-21 331 Humboldt White Oak Opening. Along Kinsey Ridge. 1259 Comment
  HSC97553  Veronica peregrina subsp. xalapensis Cara Witte 2007-5-31 166 Humboldt Buck Flat. 1547 Comment
  JEPS29846  Veronica scutellata Rimo Bacigalupi and L. Heckard, J. Weiler 1961-6-23 7836 Humboldt about 1 mi w of Carlotta (or about 0.5 mi e of Hydesville) Comment
  UC147901  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1910-4-17 3115 Humboldt Valley of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, Elk River 0 Comment
  POM283765  Veronica serpyllifolia var. humifusa Lyman D. Benson 1928-7-12 478 Humboldt Weott Ranger Station. Seaward N Coast mtn range. S Fork Eel River. 61 Comment
  HSC39004  Vicia americana var. americana Thomas W. Nelson, Jane P. Nelson 1976-5-31 2650 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  UC709400  Vicia americana var. americana Joseph P. Tracy 1933-7-26 12905 Humboldt near 5350 ft Grouse Mt. summit; Grouse Mt. Comment
  HSC71618  Vicia hirsuta J. P. Smith 1973-5-26 6812 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC78754  Vicia tetrasperma L. P. Janeway, Paul Wilson 1984-5-25 828 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  UC524122  Vicia villosa subsp. villosa Ira L. Wiggins 1932-7-7 5880 Humboldt near Samoa Comment
  UC1761620  Viola adunca J. P. Tracy 1901-6-23 1168 Humboldt Eureka Comment
  UC1198417  Viola bakeri Joseph P. Tracy 1942-6-23 17257 Humboldt ridges near Water-dog Lakes; Trinity Summit 1828 Comment
  HSC98620  Viola cuneata Cara Witte 2008-5-26 657 Humboldt National Forest 1. 1 mile north of intersection with Forest Service Road 5N10. 1457 Comment
  SEINET200810 Image available Viola glabella J. P. Tracy 1927-6-12 8153 Humboldt Northern COast Ranges Horse Mountain 1219 Comment
  UC164832  Viola glabella Joseph P. Tracy 1910-4-17 3118 Humboldt near forks of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay 0 Comment
  CAS-BOT-BC536494  Viola glabella Doris K. Kildale 1927-3-22 2939 Humboldt North fork of Elk River Comment
  HSC96273  Viola glabella J. Breton, A. Livingston 2005-6-15 10 Humboldt NE of Grouse Mtn. 1490 Comment
  UC1198447  Viola glabella Joseph P. Tracy Jul 16 1930-Jul 19 1930 9020 Humboldt forest near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1761732  Viola hallii H. E. Parks 1934-6-27 5255 Humboldt Grouse Mountain Comment
  SEINET11996974  Viola lobata F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -311 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC103112  Viola macloskeyi M. Mesler 2010-7-15 835 Humboldt Near Blake Mtn, FS rd N01 off rd 4N12 Comment
  UC1198451  Viola ocellata Joseph P. Tracy 1919-5-31 5163 Humboldt near Willow Creek (at w side of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  UC275333  Viola ocellata Joseph P. Tracy 1924-3-30 6629 Humboldt 3 mi w of Bridgeville (apparently its western limit, Van Duzen River (not in redwood belt)); Northern Coast Ranges, Van Duzen River 182 Comment
  UCSB27854  Viola praemorsa Phelps, M. 1972-3-20 Humboldt 1000 yds. north of Whitethorn turnoff on Shelter Cove Rd., roadside 304 Comment
  HSC21878  Viola praemorsa subsp. praemorsa Greg Bos 1965-5-15 272 Humboldt 2 mi. W of Berry Summit along US 299 701 Comment
  UC249588  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1922-5-29 6067 Humboldt Head of South Yager Creek; Northern Coast Ranges, South Yager Creek Comment
  HSC104092  Viola sempervirens Monica Rodriguez, William A. Worley 2015-2-21 6 Humboldt Rock Creek Ranch; 8.2 mi. along South Fork Rd. from Redwood Highway 199. 134 Comment
  RSA273350  Viola sempervirens N. G. Sugihara 1977-4-23 13 Humboldt 2.5 miles S of Shelter Cove Road. South Fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC34806  Viola sempervirens Lon Hall 1975-3-27 301 Humboldt Near Shelter Cove, above Bear Creek 366 Comment
  UC1198426  Viola sempervirens Joseph P. Tracy 1921-2-27 5416 Humboldt Bear Creek Flat near Pepperwood (along Eel River from South Fork to Scotia); Northern Coast Ranges, Eel River, Bear Creek Flat 60 Comment
  HSC98736  Viola sheltonii Cara Witte 2008-6-2 670 Humboldt Along National Forest 1. 1 mile north of 5N18 (road to Spike Buck Mt.) 1583 Comment
  HSC100699  Vitis californica Carl C. Marshall Jun 1886 313 Humboldt Hoopa. Comment
  JEPS40256  Vitis californica W. L. Jepson 1924-9-20 10653 Humboldt Richardson Grove South Fork Eel River Comment
  CAS-BOT-BC198760  Vulpia bromoides Henry M. Pollard 1948-7-22 s.n. Humboldt Perch Creek Canyon near Orleans Comment
  UC589877  Vulpia bromoides H. S. Yates 1936-6-16 5663 Humboldt 1 mi sw Samoa; Eureka Quad. 6 Comment
  HSC32482  Vulpia microstachys Bonnie Prange 1974-5-18 Humboldt Off Hwy. 299 at China Slide. Comment
  UC204712  Vulpia microstachys var. microstachys Joseph P. Tracy 1918-5-26 4942 Humboldt Redwood Creek Northern Coast Ranges, Grouse Mt. (lower foothills of Grouse Mt) 762 Comment
  UCD94899  Vulpia myuros A. H. Murphy 1951-5-15 35 Humboldt Foster Ranch, 3 miles west of Miranda. Comment
  UC1145202  Vulpia myuros var. hirsuta Joseph P. Tracy 1936-6-17 14959 Humboldt nw slope Buck Mountain (Burr Valley); Burr Valley 1066 Comment
  HSC33414  Whipplea modesta Thomas W. Nelson 1974-5-30 1348 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  JEPS43494  Whipplea modesta Lincoln Constance 1934-5-31 761 Humboldt along Bull Cr. from w boundary of Park to Grasshopper Pk. (Squaw Crk.) rd. (n side of cr.); South Fork Eel River, Bull Creek Region, Bull Cr. flat Comment
  UCD117288  Whipplea modesta K. Esau 1934-5-8 s.n. Humboldt Redwood Highway, near Scotia. Comment
  HSC20442  Whipplea modesta Yarick 1960-8-5 Humboldt M&M, 7 mi., Krueger Creek Comment
  CHSC70127  Wisteria floribunda Katie Grenier 1988-4-22 271 Humboldt Humboldt State University, S. side of Plant Operations Bldg. on 14th St., growing on fence. Comment
  BLMAR442  Xanthium spinosum Jennifer Anthony-Wheeler 2008-10-1 442 Humboldt Humboldt County, growing on Collenberg dairy, Mad River Road 7 Comment
  HSC33411  Xerophyllum tenax Thomas W. Nelson 1974-5-30 1351 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  HSC56963  Xerophyllum tenax Overton, Butler 1979-7-23 9481 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  HSC98358  Xerophyllum tenax T. Jimerson, J. Pageau 1979-6-12 525 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  SD51273  Xerophyllum tenax Darley F. Howe 1961-8-2 3123 Humboldt 24 miles east of Orick, on Bald Mountain Road. Comment
  UC13722  Xerophyllum tenax Chesnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  HSC34745  Zeltnera muehlenbergii Thomas W. Nelson 1974-7-19 1670 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC12015  Zeltnera muehlenbergii Wilbur Peterson 1970-10-31 102 Humboldt Scotia Bluffs, edge of Eel River Comment
  UC1173722  Zigadenus micranthus var. micranthus Harold E. Parks and Joseph P. Tracy 1934-6-27 11041 Humboldt Horse Mountain 1432 Comment



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