Search Results — 2000 specimen records retrieved (1383 records with coordinates)
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Results for search: County=HUMBOLDT; Source=All;   

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

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  BLMAR207  Abies concolor Jennifer Anthony-Wheeler 1996-7-9 207 Humboldt Pilot ridge., growing as component of conifer mxed hardwood forest ar elevation range 1280 Comment
Read comments
Nov 1 2013
  HSC76287  Abies concolor Denis Kearns 1981-7-22 306 Humboldt Near Whiteys Peak. 1487 Comment
  CHSC19504  Abies grandis Wendell Wood 1970-10-7 305 Humboldt Mckinleyville. East end of Chateau Way. 106 Comment
  OBI36630  Abies grandis David J. Keil 1983-7-2 17304 Humboldt Patrick's point Comment
  HSC55173  Abies procera Gilbert Muth 1979-8-1 12174 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC62913  Abronia latifolia J. M. DiTomaso 1979-5-20 1062 Humboldt Little River State Beach 10 mi. N of Arcata Comment
  CAS-BOT-BC330544  Acer circinatum Joseph P. Tracy 1949-8-4 18424 Humboldt Near Mud Springs 1371 Comment
  POM87959  Acer circinatum L. R. Abrams 1922-6-27 8298 Humboldt Prairie Creek, 4 miles north of Orick Comment
Read comments
Feb 25 2015
  RSA183640  Acer circinatum D. E. Anderson 1965-5-8 3627 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along Highway 299 Comment
  HSC95908  Acer macrophyllum Will Ferrand 2002-4-20 25 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  UC668173  Acer macrophyllum Joseph P. Tracy 1933-4-2 10955 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC28589  Achillea millefolium David D. Keck 1938-8-5 4775 Humboldt Big Lagoon Comment
  HSC102524  Achillea millefolium M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1511 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC4546  Achillea millefolium J. W. Johnson 1961-8-17 1061 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC4548  Achillea millefolium R. I. Bonn 1965-4-3 15 Humboldt Four miles West of Arcata on Lanphere Rd. Comment
  HSC58006  Achillea millefolium G. L. Clifton, Griswold 1979-7-31 11793 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC58210  Achillea millefolium Walter Overton 1979-8-1 12329 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC58329  Achillea millefolium Overton, Butler 1979-8-2 12629 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  SD41360  Achillea millefolium Edith A. Purer 1932-7-27 4133 Humboldt Samoa, near Arcata. Comment
  HSC4573  Achillea millefolium John A. DuBois 1962-5-23 31 Humboldt 15 mi. E of Arcata Comment
  JEPS37083  Achillea millefolium Joseph P. Tracy 1933-5-20 12230 Humboldt south of point Cape Mendocino 3 Comment
  UC205165  Achillea millefolium Joseph P. Tracy 1919-9-18 5243 Humboldt in comparatively dry places Trinity Summit; Northern Coast Ranges 1524 Comment
  HSC97562  Achlys californica Cara Witte 2007-6-1 177 Humboldt Along Forest Service 5N10. 1.75 miles east of intersection with National Forest 1. 1365 Comment
  CAS-BOT-BC400023  Achlys triphylla Wayne Roderick 1967-7-22 s.n. Humboldt Ca. 5 miles e. of Carlotta 45 Comment
  JEPS47775  Achlys triphylla subsp. triphylla Milo S. Baker 1923-7-29 166 Humboldt along hwy. near Lawrence Creek Comment
  UC1565800  Achnatherum lemmonii R. Spellenberg 1990-7-10 10248 Humboldt 6 mi s on USFS 1 Berry Summit (on Calif. Hwy. 299) (8 mi wsw of Salyer) 1371 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
  UC526755  Achnatherum lemmonii Joseph P. Tracy 1930-7-23 9125 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  RSA167290  Achnatherum lemmonii var. lemmonii Joseph P. Tracy 1951-6-26 19563 Humboldt Halfway between Snow Camp & Twin Lakes (at Preston's old gate near road) Comment
  SEINET957914  Acmispon micranthus J. P. Tracy 1917-1 4795 Humboldt Mouth of Little River. 6 Comment
  HSC71163  Acmispon micranthus Thomas W. Nelson 1977-5-30 3409 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  HSC71716  Acmispon nevadensis var. nevadensis M. A. Baker 1980-6-26 2439 Humboldt Near Sims Creek 610 Comment
  CHSC35605  Acmispon parviflorus Jame P. Smith 1973-5-26 6837 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  CAS-BOT-BC391412  Aconitum columbianum subsp. columbianum Carl B. Wolf 1937-8-13 9249 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on New Road towards Trinity Summit 1524 Comment
  HSC48684  Aconitum columbianum subsp. columbianum Brad Klipfel 1973-7-31 238 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC73560  Aconitum columbianum subsp. columbianum M. A. Baker 1980-7-22 3111 Humboldt Near Grogan Hole. 1676 Comment
  HSC55739  Actaea rubra G. L. Clifton, Griswold 1979-7-26 10241 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  HSC56084  Actaea rubra G. L. Clifton, Griswold 1979-7-31 11772 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  JEPS60386  Actaea rubra W. L. Jepson 1932-7-29 16445 Humboldt Glenbrook Van Duzen R., Grizzly Flat Comment
  CAS-BOT-BC29864  Adenocaulon bicolor Carl B. Wolf 1927-8-21 766 Humboldt In Stephen's Grove Comment
  HSC952  Adiantum aleuticum C. B. Wolf 1927-8-28 1170 Humboldt On the grade 9 mi. from Willow Creek, Lord Ellis Rd. to Blue Lake Comment
  CDA35538  Aesculus californica R. Spandoni & J. R. Hunt 1980-9-3 Humboldt Petrolia. 0 Comment
  HSC34286  Agastache urticifolia K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  UC205185  Agoseris aurantiaca var. aurantiaca Joseph P. Tracy 1919-9-23 5284 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  POM174060  Agoseris grandiflora Joseph P. Tracy 1918-7-14 5076 Humboldt At Eureka 0 Comment
  UC1222935  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1951-6-24 19535 Humboldt Kneeland Prairie Kneeland Prairie 762 Comment
  UCD128605  Agoseris heterophylla K. Esau 1934-5-6 s.n. Humboldt above Fort Seward. 457 Comment
  UC1199476  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1925-5-30 2700 Humboldt on grassy slopes McClellan Mountain; Northern Coast Ranges 822 Comment
  UC1239509  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6280 1/2 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 304 Comment
  UC1103368  Agrostis alba J. P. Tracy 1900-9-2 933 1/2 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC127282  Agrostis exarata William Arents Silveus 1938-7-9 2983 Humboldt Dyerville. Comment
  HSC102221  Agrostis exarata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1137 Humboldt Patterson Meadows 1555 Comment
  HSC8790  Agrostis exarata H. E. Parks, S. T. Parks Jun 1952 7553 Humboldt Spruce Cove, Trinidad 61 Comment
  UC36912  Agrostis exarata Harley P. Chandler June, 1901 1512 Humboldt Klamath River 426 Comment
  LA10251  Agrostis exarata var. exarata H. E. Parks; June 1935 5607 Humboldt Spruce Cove, Trinidad Comment
  UC526882  Agrostis hallii Joseph P. Tracy 1930-6-29 8812 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  UCD52689  Agrostis hallii P. B. Kennedy 1923-8-2 s.n. Humboldt Bluff Creek Camp, Klamath River. Comment
  UCD52704  Agrostis hallii Ray Evans 1956-7-19 s.n. Humboldt Bear River Ridge, 9 miles west of Ferndale. Comment
  UCSC000097  Agrostis hallii H. S. Yates 1936-6-16 5674 Humboldt 1 mile N.E. of Samoa Samoa - Eureka 3 Comment
  JEPS121641  Agrostis idahoensis Jennifer Buck, Danielle Roach 2009-9-30 Humboldt Blake Fen, South Fork Mountain. Sloping fen on schist, NE aspect. Blake Mountain quadrangle. SFM02B Comment
  HSC58795  Agrostis oregonensis Overton, Butler 1979-7-31 11462 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  SD51396  Agrostis pallens Darley F. Howe 1961-8-1 Humboldt 6 miles north of Trinidad on #101. Comment
  CAS-BOT-BC138635  Agrostis stolonifera Joseph P. Tracy 1927-7-16 8253 Humboldt Region about Humboldt Bay. Mouth of Elk River. 6 Comment
  JEPS75413  Agrostis viridis W. L. Jepson 1932-7-26 16410 Humboldt Bull Creek 106 Comment
  HSC70927  Aira caryophyllea R. York 1980-5-18 578 Humboldt Near Black Mtn 792 Comment
  UC1103300  Aira caryophyllea Joseph P. Tracy 1914-7-5 4553 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UCD55705  Aira caryophyllea Joseph P. Tracy 1941-6-15 16907 Humboldt Wilder Ridge, east of Kings Peak. 762 Comment
  SEINET10839747  Aira caryophyllea Harold E. Parks, Susan T. Parks Parks 5850 Humboldt Spruce Cove, Trinidad. Comment
  HSC8869  Aira praecox J. P. Tracy 1932-5-16 10103 Humboldt Near Samoa, on Humboldt Bay 6 Comment
  SEINET201011  Aira praecox J. P. Tracy 1932-5-16 10103 Humboldt Near Samoa on Humboldt Bay north coast region 6 Comment
  UC1103296  Aira praecox Joseph P. Tracy 1932-5-16 10103 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC176166  Allium amplectens Joseph P. Tracy 1912-7-26 3844 Humboldt Lawrence Creek Northern Coast Ranges, Kneeland Prairie, Lawrence Creek 762 Comment
  CAS-BOT-BC460754  Allium amplectens Carl B. Wolf 1937-6-14 8810 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  HSC2957  Allium campanulatum J. P. Tracy 1932-7-12 10479 Humboldt Head of Brett Hole, Trinity Summit 1829 Comment
  HSC73663  Allium campanulatum M. A. Baker 1980-7-15 2974 Humboldt Near Whiting Ridge. 1341 Comment
  UCR39798  Allium falcifolium D. K. Imper 1982-7-1 s.n. Humboldt Six Rivers National Forest. Lassics Lookout & road to Pine Mtn. 1524 Comment
  RSA249434  Allium falcifolium D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5600 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  UC30070  Allium falcifolium Joseph Burtt Davy 1899-6-19 5659 Humboldt summit of ridge, Hoopa Mt. Hoopa Mt. Comment
  SEINET10532720  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-10 Nelson 5417 Humboldt Blocksburg quad. T1s, r5e, intersection of secs. 13 & 14. Along road to red mt. .5 Miles w of junction with swayback ridge rd. Serpentine bald 1372 Comment
  UC535705  Allium unifolium Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  UC412886  Allotropa virgata Mrs. M. H. Manning 1901-1 Humboldt Hupa Comment
  CAS-BOT-BC171313  Alnus incana subsp. tenuifolia Joseph P. Tracy 1927-8-22 8335 Humboldt Bald Mountain; In cold wet meadow near High Prairie 1066 Comment
  CAS-BOT-BC170946  Alnus rhombifolia Doris K. Kildale 1927-5-15 3292 Humboldt Mattole River Valley Comment
  UC503097  Alnus rhombifolia Joseph P. Tracy 1930-8-3 9143 Humboldt Dinsmore's Ranch Northern Coast Ranges, Van Duzen River (on river opposite Buck Mt.) 670 Comment
  HSC69582  Alnus rubra R. Kalal 1979-5-18 66 Humboldt Union St. between 11th and 12th St. 34 Comment
  RSA778733  Alnus rubra Lyman Benson 1929-7-19 1878 Humboldt Mouth of Matole [Mattole] River. Comment
  SEINET6820704 Image available Alopecurus geniculatus A. A. Beetle, Stebbins; Tracy 1942-6-2 3458 Humboldt Loleta Swamp, S of Eureka Comment
  UC1103314  Alopecurus geniculatus Joseph P. Tracy 1938-8-20 16139 Humboldt Alton 30 Comment
  UC573793  Alopecurus pratensis H. L. Person 1932-5-11 Humboldt Redwood Hwy. between Arcata and Eureka; Eureka Quad. 0 Comment
  SEINET10511197  Alopecurus saccatus Joseph P. Tracy 1912-7-21 Tracy 3780 Humboldt Alton. Along ditch. 30 Comment
  HSC46976  Ambrosia chamissonis J. P. Smith, Thomas W. Nelson 1977-6-30 9224 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  UC665538  Ambrosia chamissonis H. E. Parks 1941-9-1 24214 Humboldt sandy beaches at mouth Little River Comment
  SD39999  Ambrosia chamissonis Edith A. Purer 1932-7-27 4144 Humboldt Samoa, near Arcata on sand dunes Comment
  RSA28766  Ambrosia chamissonis var. chamissonis H. E. Parks 1941-09 24214 Humboldt Mouth of Little River Comment
  CAS-BOT-BC142886  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-5-13 3135 Humboldt Redwood Creek at Berry's 289 Comment
  HSC8845  Ammophila arenaria J. A. Waller 1965-5-18 23 Humboldt Samoa Comment
  HSC17838  Anagallis arvensis Harvey Doerksen 1962-5-8 12 Humboldt 3 mi. W of Blue Lake where Lindsey Creek joins the Mad River Comment
  UC906762  Anagallis arvensis Joseph P. Tracy 1947-6-15 17713 Humboldt Eureka 30 Comment
  HSC57923  Anaphalis margaritacea Gilbert Muth 1979-7-31 11547 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  CAS-BOT-BC45142  Anaphalis margaritacea Annie M. Alexander; Louise Kellogg 1948-9-3 5572 Humboldt Trinity and Klamath Rivers Comment
  HSC37663  Anaphalis margaritacea R. Sutherland 1976-8-18 14 .18876 Humboldt 195 Comment
  HSC4628  Anaphalis margaritacea H. E. Parks, S. T. Parks Aug 1943 24237 Humboldt Along Hwy, Stone Lagoon Comment
  HSC48847  Anemone deltoidea Brad Klipfel 1973-7-15 206 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55868  Anemone deltoidea G. L. Clifton, Griswold 1979-7-25 10891 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  POM118715  Anemone deltoidea Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  UC634952  Anemone deltoidea H. L. Mason 1929-5-9 5280 Humboldt Bull Creek Flat Comment
  HSC47958  Anemone oregana var. oregana Brad Klipfel 1975-5-24 626 Humboldt Horse Mtn. Comment
  UC562611  Angelica arguta Joseph P. Tracy 1932-7-12 10443 Humboldt Trinity Summit, at Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  JEPS14236  Angelica genuflexa Joseph P. Tracy 1940-9-26 16725 Humboldt Near south city limits Eureka. 6 Comment
  UC642313  Angelica genuflexa Joseph P. Tracy 1938-9-25 16165 Humboldt near Murphy Meadows (Bald Mountain); Bald Mountain 944 Comment
  JEPS14103  Angelica hendersonii Joseph P. Tracy 1936-10-24 15205 Humboldt Table Bluff 91 Comment
  JEPS14107  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  UC582635  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  UC1197375  Angelica hendersonii Joseph P. Tracy 1924-9-21 6902 Humboldt toward Bucksport (Northern Coast Ranges, Eureka); Northern Coast Ranges, Eureka 0 Comment
  BLMAR426  Angelica tomentosa Clara Sander 2004-9-1 426 Humboldt Titlow Hill, Horse Mt area on Titlow hill road 1554 Comment
  HSC70545  Angelica tomentosa M. A. Baker 1980-7-22 3080 Humboldt Near Salmon Mtn. 1820 Comment
  UC183771  Angelica tomentosa Joseph P. Tracy 1913-9-9 4391 Humboldt Northern Coast Ranges, at s end of Big Lagoon Big Lagoon Big Lagoon Big Lagoon; Northern Coast Ranges, Big Lagoon 30 Comment
  UC205188  Antennaria media Joseph P. Tracy 1919-9-24 5293 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  HSC57992  Antennaria rosea subsp. rosea G. L. Clifton, Griswold 1979-7-31 11742 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC41291  Antennaria suffrutescens Brad Klipfel 1974-7-27 489 Humboldt Horse Mtn. Comment
  UC1199432  Antennaria suffrutescens Joseph P. Tracy 1934-6-14 13216 Humboldt Horse Mountain 1432 Comment
  JEPS13332  Anthemis arvensis Joseph P. Tracy 1937-10-3 15691 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  UC175182  Anthemis arvensis Joseph P. Tracy 1913-5-21 4074 Humboldt Eureka Northern Coast Region 0 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
  HSC8944  Anthoxanthum odoratum Paul Shields 1955-6-10 Humboldt Humboldt State University campus. Comment
  HSC89483  Anthoxanthum odoratum P. A. Daly 1986-3-12 70 Humboldt Trinidad Head, along trail 61 Comment
  RSA286350  Anthoxanthum odoratum R. F. Thorne 1974-7-29 45071 Humboldt Samoa Dunes: between Humboldt Bay and Pacific Ocean. Comment
  RSA34311  Anthoxanthum odoratum L. Larsen 1935-5-7 s.n. Humboldt Arcata Comment
  UC1056038  Anthoxanthum odoratum H. E. and S. T. Parks 1952-4 24444 Humboldt Trinidad, Spruce Cove Spruce Cove; Trinidad, Spruce Cove 60 Comment
  UC589908  Anthoxanthum odoratum H. S. Yates 1936-6-18 5736 Humboldt 2 mi n of Big Lagoon 30 Comment
  UC582470  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1933-8-30 13004 Humboldt Horse Mountain; Northern Coast Ranges 1066 Comment
  UC154129  Aphanes occidentalis J. P. Tracy 1904-4-24 2033 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa Comment
  UC154207  Aphanes occidentalis J. P. Tracy 1909-5-2 2961 Humboldt Immediate vicinity Eureka 0 Comment
  HSC41328  Apocynum androsaemifolium Brad Klipfel 1974-8-2 510 Humboldt Horse Mtn. Comment
  HSC57887  Apocynum androsaemifolium Overton, Butler 1979-7-31 11438 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC58036  Apocynum androsaemifolium G. L. Clifton 1979-7-31 11874 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC34969  Apocynum cannabinum Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  UC154172  Apocynum cannabinum Joseph Burtt Davy and Walter C. Blasdale 1899-6-29 5896 Humboldt near Requa Comment
  CAS-BOT-BC392164  Aquilegia formosa Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1371 Comment
  CAS-BOT-BC392166  Aquilegia formosa Doris Kildale Gillespie 1931-6-7 10614 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC99008  Aquilegia formosa var. formosa Cara Witte 2008-7-16 907 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 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
  HSC76368  Arabis breweri var. breweri Denis Kearns 1981-7-21 293 Humboldt Near Whiteys Peak 1585 Comment
  HSC75964  Arabis glabra Walter Overton, Butler 1979-8-2 12585 Humboldt Near Bret Hole, close to the town of Hoopa. 1554 Comment
  HSC57653  Arabis lyallii G. L. Clifton, Terry Griswold 1979-7-25 10824 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC98725  Arabis subpinnatifida Cara Witte 2007-5-23 93 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  HSC72985  Aralia californica M. A. Baker 1980-5-17 1191 Humboldt Near Le Perron Peak 792 Comment
  HSC54601  Arbutus menziesii Overton, Butler 1979-7-24 9683 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC7602  Arbutus menziesii Dan O'Brien 1962-5-19 Humboldt 4 1/2 mi. E on Fickle Hill Rd. Comment
  POM118486  Arbutus menziesii Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  RSA175206  Arbutus menziesii R. F. Thorne 1957-9-2 19006 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  RSA32651  Arbutus menziesii Doris K. Kildale 1927-5-7 3109 Humboldt Elk Ridge near Blacksburg. Comment
  RSA697566  Arbutus menziesii J. R. Bruff 1937-8-17 927 Humboldt Richardson Grove. Comment
  UC1187351  Arctostaphylos R. G. Skolmen 1960-10-25 10 (1) Humboldt two and a half mi nnw Weitchepec; Quad 11 D-2 975 Comment
  UC585941  Arctostaphylos Joseph P. Tracy 1935-6-23 13991 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  UC585953  Arctostaphylos Joseph P. Tracy 1932-7-18 10722 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  UC1225937  Arctostaphylos X media Joseph P. Tracy 1945-3-30 17505 Humboldt Eureka 45 Comment
  CAS-BOT-BC25209  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-11 16861 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  BLMAR648  Arctostaphylos columbiana Jennifer Wheeler 2011-5-27 648 Humboldt Lacks Creek, Pine Ridge Road, spur at Stormy Saddle 1097 Comment
  CAS-BOT-BC23782  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13151 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC23815  Arctostaphylos columbiana C. Hart Merriam 1921-7-10 s.n. Humboldt 19.5 miles south of Garberville, South fork of the Eel River. Comment
  CAS-BOT-BC23816  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15171 Humboldt Fickle Hill, 6 mi. SE of Arcata 609 Comment
  UC535005  Arctostaphylos columbiana H. E. Parks December 1931 4950 Humboldt Hobson's Trinidad 60 Comment
  UC585912  Arctostaphylos columbiana Joseph P. Tracy 1932-2-28 9772 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC726576  Arctostaphylos columbiana A. A. Heller 1937-6-12 15918 Humboldt along road paralleling the ocean Bishop Pine Lodge (3 mi n of Trinidad) Comment
  RSA134600  Arctostaphylos columbiana var. columbiana P. C. Everett, E. K. Balls, George B. Everett 1959-10-25 23965 Humboldt 8.8 mi. NE from Blue Lake, U.S. Hwy, 299, Arcata to Willow Creek. 274 Comment
  CHSC85572  Arctostaphylos glandulosa L. P. Janeway 2003-7-30 7948 Humboldt High North Coast Ranges. Along Friday Ridge Road, at south end of Friday Ridge, 1.0 km (air) east-southeast of Friday Camp. Roadside. 1359 Comment
  HSC27128  Arctostaphylos manzanita J. P. Smith, J. O. Sawyer 1973-2-10 5840 Humboldt 2.7 mi. W of Hwy. 96 on Brannan Mtn. Road, N of Willow Creek 366 Comment
  HSC37829  Arctostaphylos manzanita Thomas W. Nelson, Jane P. Nelson 1976-2-21 2249 Humboldt Tish-Tang Campground Comment
  RSA633025  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27805 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  CAS-BOT-BC38837  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1920-9-14 s.n. Humboldt Mts. near Willow Creek (1st ridge west of Trinity River on Willow Creek Road) Comment
  UC32687  Arctostaphylos manzanita subsp. manzanita Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  HSC7779  Arctostaphylos nevadensis D. E. Anderson 1965-6-1 3759 Humboldt Horse Mountain, S facing slope 1220 Comment
  RSA46694  Arctostaphylos nevadensis Doris K. Kildale 1938-6-5 15390 Humboldt Horse Mountain Comment
  CAS-BOT-BC40063  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1936-8-2 15075 Humboldt French Camp Ridge 1066 Comment
  HSC35782  Arctostaphylos patula Thomas W. Nelson, B. Reinhardt 1975-7-30 2097 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  CAS-BOT-BC43989  Arctostaphylos uva-ursi C. B. Wolf 1931-8-30 2374 Humboldt Samoa, Humboldt Bay. 7 Comment
  CAS-BOT-BC43994  Arctostaphylos uva-ursi Philip A. Munz 1954-7-25 19876 Humboldt in Coastal Strand Community, at Humboldt Lighthouse south of Samoa Comment
  CAS-BOT-BC47209  Arctostaphylos uva-ursi Doris K. Kildale 1926-6-18 2395 Humboldt Gold Bluffs. Comment
  HSC7725  Arctostaphylos uva-ursi S. J. Hawks 1965-3-19 10 Humboldt 1/4 mi. W of Fairhaven Comment
  RSA166376  Arctostaphylos uva-ursi R. F. Thorne 1957-9-3 19024 Humboldt Patrick's Point State Park. Comment
  UC1225930  Arctostaphylos uva-ursi Joseph P. Tracy 1945-5-10 17506 Humboldt Eureka 45 Comment
  SEINET2031082 Image available Arctostaphylos uva-ursi Joseph P. Tracy 1901-1 1061 Humboldt Region about Humboldt Bay 0 Comment
  HSC59030  Arctostaphylos viscida M. A. Baker 1979-6-7 795 Humboldt NE slope of Telescope Peak 1189 Comment
  UC1116236  Arenaria serpyllifolia subsp. serpyllifolia Joseph P. Tracy 1948-5-15 17975 Humboldt Trinity River Valley, Willow Creek 152 Comment
  UC1027189  Aristida oligantha J. I. Mallory 1955-9-17 122 Humboldt 3/8 mi nnw headquarters; Quad 29A-2, Cottrell Ranch 746 Comment
  CAS-BOT-BC64580  Armeria maritima subsp. californica Joseph P. Tracy 1927-6-8 8115 Humboldt Trinidad. 60 Comment
  HSC1975  Armeria maritima subsp. californica N. D. Dennis, D. E. Anderson 1965-6-8 108 Humboldt Samoa Peninsula along the W side of Humboldt Bay. Comment
  HSC100712  Arnica amplexicaulis Carl C. Marshall Jun 1886 273 Humboldt Trail E of Hoopa. Comment
  HSC96075  Arnica cernua J. Breton, A. Livingston, J. Lumbert 2005-6-24 1 Humboldt Horse Mtn. radio tower, 1/2 mile from intersection of three F.S. roads, 4.5 miles from Hwy. 299 on Titlow Hill Rd. 1445 Comment
  JEPS20981  Arnica cernua Joseph P. Tracy 1938-6-13 15902 Humboldt Horse Mt. 1432 Comment
  HSC49998  Arnica discoidea M. A. Baker 1979-6-7 790 Humboldt W slope of Snow Mtn. 762 Comment
  JEPS35862  Arnica discoidea Lincoln Constance 1934-6-19 910 Humboldt s of, near summit of Grasshopper Mtn Bull Creek Flat; South Fork of the Eel River, Grasshopper Mtn. 914 Comment
  UC129316  Arnica discoidea Joseph Burtt Davy and Walter C. Blasdale 1899-7-19 5668 Humboldt Hoopa Mt. North-Western California, Hoopa Mt. Comment
  UC249832  Arnica discoidea Joseph P. Tracy 1923-6-20 6335 Humboldt Briceland 304 Comment
  HSC44152  Arnica spathulata Thomas W. Nelson, Jane P. Nelson 1977-7-1 3555 Humboldt Along N side of ridge between Bear and Blanket Creeks. 1494 Comment
  HSC58342  Artemisia douglasiana Overton, Butler 1979-8-2 12667 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC75260  Artemisia douglasiana J. O. Sawyer, M. A. Ericksen 1980-8-18 4054 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  SEINET11842962  Artemisia douglasiana F. H. Utech 1986-1 86 -412 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  UC1052468  Artemisia pycnocephala H. E. and S. T. Parks 1952-6-1 24495 Humboldt Samoa Comment
  CAS-BOT-BC97243  Artemisia suksdorfii Carl B. Wolf 1927-8-29 1220 Humboldt [Devil's] Devils Gate, south of Cape Mendocino Comment
  RSA40781  Artemisia suksdorfii C. B. Wolf 1944-10-26 11470 Humboldt Redwood Highway at Junction of road to Crannell 15 Comment
  UC249827  Artemisia suksdorfii Joseph P. Tracy 1924-8-10 6812 Humboldt Blue Slide on Van Duzen River 91 Comment
  UC466610  Aruncus dioicus var. pubescens Joseph Burtt Davy and Walter C. Blasdale 1899-5 5722 Humboldt Supply Creek; North Coast Ranges, Hoopa Valley Comment
  HSC49144  Asarum caudatum J. O. Sawyer 1977-4-23 2840 Humboldt Dagsaw Spring on road to Onion Mtn. Comment
  SEINET3369095 Image available Asarum caudatum Richard R. Halse 2011-3-25 8163 Humboldt Along U.Sl. Hwy 101 ca 2.8 miles S of Stafford, near Exit 674. 74 Comment
  UC1198117  Asarum caudatum Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3618 Humboldt near Hydesville 60 Comment
  POM228362  Asarum caudatum C. C. Harris, S. K. Harris 1936-6-14 s.n. Humboldt On Yager Road from Carlotta 457 Comment
  SEINET8189642 Image available Asarum caudatum H. E. Parks 1931-3-24 0918 Humboldt Near Orick Comment
  UCSB26616  Asarum caudatum Havlik, Neil 1968-8-20 Humboldt On the Ferndale-Capetown Road, about 5 miles from Ferndale 457 Comment
  HSC63224  Asclepias cordifolia M. A. Baker 1978-5-6 489 Humboldt 2 km. S of Weitchpec Comment
  RSA417736  Aster ledophyllus Brad W. Klipfel 1973-7-15 189 Humboldt Along ridge trail southeast of North Trinity Mountain 1829 Comment
  UC502992 Image available Astragalus agnicidus Henry Tosten 1931-6-7 Humboldt 4 mi s Miranda (near Bear Buttes, on Tosten and Pierce Ranch); ; near Bear Buttes, Humboldt Co. 762 Comment
  JEPS54822  Astragalus pycnostachyus var. pycnostachyus W. L. Jepson 1902-8-4 2143 Humboldt Cape Mendocino to Petrolia (ocean shore); Ocean shore, Cape Mendocino to Petrolia Comment
  CAS-BOT-BC193131  Astragalus rattanii var. rattanii Volney Rattan s.n. Humboldt Bug Creek Comment
  UC175639  Astragalus rattanii var. rattanii Joseph P. Tracy 1913-5-4 4051 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC82583  Astragalus rattanii var. rattanii J. W. Blankinship 1893-6-15 Humboldt Bridgeville Comment
  CAS-BOT-BC200853  Astragalus umbraticus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC60015  Athyrium filix-femina var. cyclosorum M. A. Baker 1977-5-1 281 Humboldt E of Humboldt State University. Comment
  HSC95880  Athyrium filix-femina var. cyclosorum Will Ferrand 2002-2-2 22 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  UC673040  Atriplex leucophylla Joseph P. Tracy 1928-7-25 8489 Humboldt Big Lagoon Big Lagoon (on sea-shore) 3 Comment
  HSC69756  Atriplex prostrata Thomas W. Nelson 1977-9-22 3751 Humboldt Along E side of State Rte. 101, N of Eureka airport Comment
  UC526858  Avena barbata Joseph P. Tracy 1930-6-29 8825 Humboldt Buck Mountain Northern Coast Ranges (lower foothills of nw slope) 762 Comment
  HSC9012  Avena fatua R. Spellenberg 1965-6-14 1123 Humboldt Along Barry Rd., 1 mi. from junction with Bridgeville Rd., Kneeland Prairie Comment
  HSC9024  Avena fatua W. F. Nickel 1965-5-16 Humboldt N Arcata next to the Humboldt Motor Hotel. Comment
  HSC5125  Baccharis douglasii Jerry Parker 1968-10-31 225 Humboldt South of Vista Point Comment
  POM318604  Baccharis douglasii Patricia Wilder 1968-8-21 4410 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  UCR122378  Baccharis glutinosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 7006 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  CAS-BOT-BC98034  Baccharis pilularis L. B. Kildale 1930-8-3 10488 Humboldt Chaparral Mt. at Bug Creek Comment
  RSA46911  Baccharis pilularis Doris K. Kildale 1925-12-25 1441 Humboldt Mouth of Eel River Comment
  HSC100426  Baeria chrysostoma Carl C. Marshall Jun 1885 31 Humboldt Bear River. Comment
  UC1222969  Balsamorhiza deltoidea Joseph P. Tracy 1950-6-15 18792 Humboldt 7 mi n, at Mail Ridge Harris Comment
  POM36319  Balsamorhiza hookeri var. lagocephala Geo. D. Butler 1909-4-14 635 Humboldt Dry hill near Eureka Comment
Read comments
Dec 1 2014
  HSC48865  Barbarea orthoceras Brad Klipfel 1973-6-10 58 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC99035  Barbarea orthoceras Cara Witte 2007-6-13 248 Humboldt Forest Service Road 5N01, Ammon Ridge Road. 1525 Comment
  JEPS31856  Bellis perennis Joseph P. Tracy 1937-6-20 15345 Humboldt 10 miles up from mouth of Bear River Bear River 152 Comment
  HSC5189  Bellis perennis John A. Dubois 1962-5-23 20 Humboldt 20 miles East of Arcata Comment
  HSC91368  Bellis perennis Collin Dillingham 1989-2-26 3 Humboldt Arcata; corner of 10th and D streets 0 Comment
  SEINET12219011  Bensoniella oregona J. P. Tracy 1951-1 19416 Humboldt East side of Snow Camp Meadows Comment
  HSC24379  Berberis aquifolium J. O. Sawyer 1970-6-24 2258 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  UC1198389  Berberis aquifolium var. repens Joseph P. Tracy 1947-7-5 17789 Humboldt ridge top 1 mi w Mud Springs (Trinity Summit) 1158 Comment
  CAS-BOT-BC75682  Berberis nervosa C. B. Wolf 1931-8-29 2372 Humboldt Near summit of Orick Hill on the road to Weitchpec. 304 Comment
  OBI30306  Berberis nervosa Wallace Weber, John C. Cooke, D. J. Pinkava, & David J. Keil 1969-8-19 2214 Humboldt 24.9 mi W of Humboldt county line on rte 299 Comment
  UCD129580  Bidens frondosa Joseph P. Tracy 1950-9-22 19367 Humboldt Klamath River, near Slate Creek, below Orleans 8 miles. From Orleans down the river. 121 Comment
  UCD114455  Boechera platysperma Joseph P. Tracy 1932-7-12 10458 Humboldt Klamath Mountains, Trinity Summit. Rocky exposed places, head of Brett Hole. 1828 Comment
  HSC93955  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1999-10-25 1268 Humboldt Hwy. 101, mile marker 61.40 2 Comment
  HSC31636  Borago officinalis Glenn McGourty 1974-6-1 85 Humboldt Comment
  HSC100314  Botrychium multifidum Lindsey Holm 2011-10-25 Humboldt Van Eck Forest near Fieldbrook. 7 Comment
  CAS-BOT-BC420270  Boykinia occidentalis Carl B. Wolf 1927-8-22 798 Humboldt Big Lagoon Comment
  HSC20181  Boykinia occidentalis H. E. Parks, S. T. Parks Jun, Jul 1952 24451 Humboldt Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC106296  Brickellia californica Carl B. Wolf 1927-8-27 1158 Humboldt On the Klamath River 2 mi. below the Salmon River Comment
  CAS-BOT-BC127681  Brickellia greenei Joseph P. Tracy 1934-9-5 13655 Humboldt Horse Mountain 1402 Comment
  UC1145097  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCR274950  Briza maxima Charity A. Hartshorn 2016-4-24 25 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  HSC38484  Briza minor Dennis Anderson, J. P. Smith 1971-6-18 - 1064 Humboldt Chezem Rd., 3 mi. E of bridge over Redwood Creek Comment
  HSC48326  Brodiaea elegans subsp. elegans Maralyn O'Meara 1974-7-11 528 Humboldt Kneeland, Barry Ridge Comment
  HSC98090  Brodiaea elegans subsp. elegans Cara Witte 2007-7-11 482 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  UC146225  Brodiaea elegans subsp. elegans Joseph P. Tracy 1908-6 2855 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  HSC100549  Brodiaea laxa Carl C. Marshall Jun 1885 94 Humboldt Hills everywhere. Comment
  SEINET200766  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1942-6-15 17125 Humboldt Englewood Natural prairie near Redcrest resort 91 Comment
  CAS-BOT-BC144345  Bromus Doris K. Kildale 1926-5-16 2009 Humboldt South Fork of Eel River. Miranda. Comment
  UCD125575  Bromus Laurel Goldsmith 2012-11-1 s.n. Humboldt Near Arcata. Humboldt Bay National Wildlife Refuge. Lanphere Dunes Unit, just outside main office. 6800 Lanphere Road. 5 Comment
  CAS-BOT-BC149568  Bromus carinatus var. carinatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UC37586  Bromus carinatus var. carinatus Joseph Burtt Davy 1899-6-8 5351 Humboldt near Bell's Springs Comment
  HSC9214  Bromus carinatus var. marginatus R. I. Bonn 1965-10-1 Humboldt 2 mi. N of Bridgeville on May Ranch. 732 Comment
  UC249501  Bromus carinatus var. maritimus Joseph P. Tracy 1922-5-28 6054 Humboldt Little River Beach; Northern Coast Ranges, Little River Beach 6 Comment
  CAS-BOT-BC155994  Bromus diandrus Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  HSC9271  Bromus diandrus J. W. Johnson 1962-4-18 1268 Humboldt Along the lane below the W.M. Lanphere Home, Samoa Peninsula Comment
  JEPS72928  Bromus diandrus Lincoln Constance 1934-5-26 674 Humboldt Bull Creek Region, South Fork Eel River, s end of Dyerville Bridge Dyerville Bridge; Bull Creek Region, South Fork Eel River, Dyerville Bridge 45 Comment
  HSC69864  Bromus hordeaceus Thomas W. Nelson 1978-5-28 4087 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  UCD58817  Bromus hordeaceus A. H. Shunk 1923-7-12 s.n. Humboldt Briceland. Comment
  HSC32513  Bromus laevipes D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5716 Humboldt McKeown Ranch, N of Dinsmore Comment
  UCR45821  Bromus marginatus Kenneth Clark 1980-5-10 643 Humboldt Point Delgada Q., Shelter Cove, coastal bluffs of Point Delgada 3 Comment
  UC204535  Bromus sterilis Joseph P. Tracy 1916-5-31 4701 Humboldt along Eel River from South Fork to Scotia, Stitz Creek Stitz Creek; Northern Coast Ranges, Eel River, Stitz Creek 60 Comment
  HSC73757  Bromus tectorum Gail Newton 1980-7-11 1326 Humboldt Near Red Mtn. 1341 Comment
  HSC97182  Bromus tectorum Benjamin Hart, Erin Lonergan 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1524 Comment
  CDA1852  Bromus vulgaris E. C. Whitney 1976-6-1 Humboldt Redcrest. 0 Comment
  UC34135  Bromus vulgaris Joseph Burtt Davy 1899-6-10 5406 Humboldt Hubbard's Station Comment
  RSA46798  Cacaliopsis nardosmia Doris K. Kildale 1926-4-18 1776 Humboldt McClellan Mountain. Comment
  UC175208  Cacaliopsis nardosmia Joseph P. Tracy 1913-6-17 4186 Humboldt Buck Mountain, near the summit Buck Mountain 1676 Comment
  UC1198281  Cakile edentula Joseph P. Tracy 1948-6-10 18063 Humboldt sand beach w. of town Trinidad 3 Comment
  UCR37862  Cakile edentula subsp. edentula D. Gordon 1982-9-23 s.n. Humboldt Northern Coast, Lanphere-Christensen Dunes Preserve, 3 mi west of Arcata Comment
  HSC39982  Cakile maritima Linda M. Barker 1976-6-22 1628 Humboldt 3 mi. W of Arcata Comment
  RSA232640  Cakile maritima var. maritima Larry E. DeBuhr, P. Everett 1972-5-22 608 Humboldt On the beach at Prairie Creek. Redwoods Sate Park Comment
  RSA10029  Calamagrostis canadensis Joseph P. Tracy 1932-7-14 10553 Humboldt Klamath Mountains; Trinity Summit. Wet Meadow at Corral Prairie 0 Comment
  UC1145051  Calamagrostis foliosa Joseph P. Tracy 1936-6-9 14899 Humboldt at bridge 3 mi e Petrolia (bluff bank of river); Mattole River 30 Comment
  HSC44185  Calamagrostis koelerioides Thomas W. Nelson, Jane P. Nelson 1977-9-3 3736 Humboldt Ridge NW of the pond above Alder Spring 1555 Comment
  HSC58535  Calamagrostis koelerioides Overton, Butler 1979-7-23 9442 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  SEINET200619 Image available Calamagrostis koelerioides Joseph P. Tracy 1934-7-18 13408 Humboldt Horse Mountain. Comment
  UC552720  Calamagrostis koelerioides Joseph P. Tracy 1935-7-30 14355 Humboldt Salmon Summit 1767 Comment
  UCD57524  Calamagrostis nutkaensis Elizabeth Wilson 1940-7-12 s.n. Humboldt north of Eureka. Comment
  HSC17634  Calandrinia ciliata P. N. Slattery 1963-3-31 35 Humboldt Clam Beach Comment
  CHSC106732  Callitriche heterophylla var. bolanderi Robert F. Thorne; P. Everett 1965-8-9 35323 Humboldt Clam Beach County Park: along highway in shallow water of ditch. 3 Comment
  JEPS42834  Callitriche heterophylla var. bolanderi W. L. Jepson 1936-8-17 17921 Humboldt 2.5 mi s Fields Landing Comment
  CAS-BOT-BC80385  Calocedrus decurrens Doris K. Kildale 1927-12-1 4203 Humboldt Klamath River at Orleans Comment
  CAS-BOT-BC80386  Calocedrus decurrens Doris K. Kildale 1926-8-31 2606 Humboldt Mattole River Valley, Geo. H. Mineis Ranch Comment
  HSC58098  Calocedrus decurrens G. L. Clifton, Griswold 1979-8-1 12019 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UCSB24062  Calocedrus decurrens McMinn, H. 1922-07 Humboldt 1 mile east of Dinsmore Comment
  HSC99312  Calochortus tolmiei M. A. Baker 1980-6-7 1813 Humboldt Near Brush Mtn. 1128 Comment
  CAS-BOT-BC494363  Calochortus tolmiei Volney Rattan 1882-6-1 s.n. Humboldt Kuseland Comment
  SEINET10528701  Calochortus tolmiei Lincoln Constance, Alan A. Beetle 1940-5-17 Constance 2614 Humboldt Perianth white to purplish, densely hairy within; gland purple. With Amelanchier and prunus, serpentine? Soil of openings in cut-over pinus Ponderosa-pseudotsuga-quercus garryana forest, larrabee valley, near eureka Comment
  UCD139586  Calochortus tolmiei Thomas W. Nelson; James L. Nelson 1980-6-10 5427 Humboldt along road to Red Mountain. 1371 Comment
  UC667122  Calochortus vestae Joseph P. Tracy 1930-6-15 8760 Humboldt Dobbyn Creek 152 Comment
  UC502923  Caltha biflora Joseph P. Tracy 1932-7-17 10671 Humboldt Ridges east of Corral Prairie, Trinity Summit; Klamath Mountains. 1828 Comment
  HSC74422  Caltha leptosepala Gail Newton 1980-8-10 2045 Humboldt Near Blake Mtn. 1707 Comment
  UC205227  Calycadenia fremontii Joseph P. Tracy 1919-9-13 5188 Humboldt near Mouth of Willow Creek; Valley of Trinity River, Northern Coast Ranges 152 Comment
  JEPS876  Calycadenia truncata Chesnut and Drew 1888-7-28 Humboldt Hy-Am-pon Comment
  RSA54132  Calycadenia truncata subsp. scabrella H. M. Pollard 1946-8-31 s.n. Humboldt Orleans to Somes Bar Comment
  CAS-BOT-BC275364  Calycadenia truncata var. truncata G. D. Carr 1974-9-12 784 Humboldt 5.3 miles SW of Somes Bar, 2.8 miles NE of Orleans on Highway 96 214 Comment
  HSC34523  Calypso bulbosa J. D. Ackerman 1975-5-3 442 Humboldt Just off Hwy. 299, 200 yds. E of Lord Ellis Summit, E of Blue Lake and W of Willow Creek and Redwood Creek 854 Comment
  HSC99380  Calypso bulbosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 29 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
  HSC70228  Calyptridium monospermum M. A. Baker 1980-6-8 1891 Humboldt Near Buck Flat. 1554 Comment
  HSC59460  Calystegia soldanella M. A. Ericksen 1979-5-18 297 Humboldt Samoa Dunes, .5 mi. S of Simpson Timber Company plant entrance Comment
  HSC6364  Calystegia soldanella J. W. Johnson 1961-8-17 1021 Humboldt W.M. Lanphere Farm, Samoa Peninsula Comment
  HSC6367  Calystegia soldanella J. R. Woodside 1963-5-11 6 Humboldt 1.25 mi. N of Fairhaven Comment
  HSC93522  Calystegia soldanella Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-6 747 Humboldt Dry Lagoon State Park, between ocean and Dry Lagoon 2 Comment
  RSA337437  Calystegia soldanella R. F. Thorne, P. C. Everett, K. Thorne 1965-8-9 35307 Humboldt Big Lagoon. 3 Comment
  CHSC20349  Calystegia soldanella D. E. Anderson; N. Dennis 1965-6-8 1036 Humboldt Samoa Peninsula along the west side of Humboldt Bay. Sections 3, 4, 9, 10, 15, 16, 17, 20, 21, 28, 29, 31, 32. Comment
  HSC66287  Camassia quamash subsp. linearis M. A. Baker 1980-6-8 1878 Humboldt Near Buck Flat. 1554 Comment
  CAS-BOT-BC493385  Camassia quamash subsp. linearis Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  HSC16444  Camissonia cheiranthifolia C. O. Baker 1962-5-7 31 Humboldt 1 mi. N of Samoa, 1/2 mi. E of coastline Comment
  LA206042  Camissoniopsis cheiranthifolia C. C. Harris; S. K. Harris 1939-8-23 sn Humboldt Samoa Comment
  CAS-BOT-BC160239  Camissoniopsis cheiranthifolia subsp. cheiranthifolia C. C. Harris; S. K. Harris; Clarence Crane, Jr. 1939-8-23 s.n. Humboldt On beach-sand at Samoa Comment
  CAS-BOT-BC160245  Camissoniopsis cheiranthifolia subsp. cheiranthifolia D. E. Breedlove 1962-6-7 3036 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  POM225298  Campanula prenanthoides P. A. Munz 1936-8-10 14338 Humboldt Little Van Duzen River, 15 miles east of Bridgeville. Comment
  UC602559  Campanula scouleri Joseph P. Tracy 1926-6-27 7691 Humboldt Horse Mountain 1219 Comment
  HSC38209  Cardamine breweri Thomas W. Nelson, J. P. Smith 1976-4-25 2382 Humboldt Brazil Ranch E of Hwy. 101 near College of the Redwoods Comment
  CAS-BOT-BC37251  Cardamine breweri Joseph P. Tracy 1906-4-29 2432 Humboldt Northern Coast Region. Region about Humboldt Bay. South slope of Humboldt Hill. 152 Comment
  CAS-BOT-BC37424  Cardamine californica Doris K. Kildale 1927-1-23 2974 Humboldt Van Duzen River at the Blue Shale. Comment
  CAS-BOT-BC37431  Cardamine californica Victor Duran 1933-5-11 3405 Humboldt Van Duzen River near Bridgeville. Comment
  UC1199200  Cardamine californica Joseph P. Tracy 1924-2-24 6603 Humboldt near McKee's Mill (South Fork Eel River); Northern Coast Ranges, South Fork Eel River 60 Comment
Read comments
Jul 25 2012
  UC162640  Cardamine californica Joseph Burtt Davy and Walter C. Blasdale 1899-6-18 5610 Humboldt Bald Mountain North-Western California, Bald Mountain Comment
  UC183542  Cardamine californica Joseph P. Tracy 1913-6-17 4180 Humboldt near summit Buck Mountain; Northern Coast Ranges, near summit Buck Mountain 1524 Comment
  SEINET6914416  Cardamine californica var. integrifolia J. P. Tracy 1911-4-2 3171 Humboldt Immediate vicinity of Eureka, altitude 0-500 feet. Comment
  UC1199194  Cardamine nuttallii Joseph P. Tracy 1933-6-11 12665 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1371 Comment
  UC1199203  Cardamine oligosperma Joseph P. Tracy 1918-5-1 4898 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  UC1199207  Cardamine oligosperma Joseph P. Tracy 1920-5-18 5328 Humboldt 5 mi from Dyerville (South Fork Eel River, Forest Lodge, along Eel River from South Fork to Scotia); Northern Coast Ranges, South Fork Eel River, Forest Lodge 60 Comment
  HSC37574  Cardionema ramosissimum J. D. Ackerman 1975-6-10 458 Humboldt 1 mi. N of Samoa bridge turnoff from Samoa Blvd., S of Manila Comment
  HSC4143  Cardionema ramosissimum Norman H. Moe 1962-5-23 Humboldt Lanphere's Place Comment
  RSA441719  Cardionema ramosissimum M. B. Dunkle 1936-8-18 4828 Humboldt Moonstone Beach. Comment
  UC161023  Cardionema ramosissimum Joseph P. Tracy 1909-7-18 3018 Humboldt Ocean Beach at Humboldt Bay; Northern Coast Region, , Ocean Beach Comment
  CDA18215  Carduus tenuiflorus G. D. Barbe, T. C. Fuller 1974-6-17 1843 Humboldt North Coast Ranges; Shelter Cove, uphill, E of Sail Court. 91 Comment
  CDA18246  Carduus tenuiflorus G. D. Barbe, T. C. Fuller 1974-6-18 1884 Humboldt North Coast Ranges; Fortuna bottoms, Grizzly Bluff; Waddington Rd. 1/4 mi N of Pleasant Point Rd. (Ferndale Bottoms) 2 mi N of Grizzly Bluff Rd. 0 Comment
  CDA6909  Carduus tenuiflorus J. P. Tracy 1936-6-28 15008 Humboldt Hungry Hollow on Bald Mountain. Comment
  UC577397  Carduus tenuiflorus Joseph P. Tracy 1936-6-28 15008 Humboldt Hungry Hollow Bald Mt. 762 Comment
  SEINET202626  Carduus tenuiflorus Joseph P. Tracy 1942-6-28 17266 Humboldt 'Angel's Ranch' toward Hungry Hollow; Bald Mountain Comment
  CAS-BOT-BC18515  Carex abrupta Joseph Prince Tracy 1932-7-14 10546 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  CAS-BOT-BC18516  Carex abrupta Joseph Prince Tracy 1932-7-14 10546 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  UCD149856  Carex aquatilis var. dives H. McC.; William Anderson 1964-8-5 s.n. Humboldt Dry Lagoon. Comment
  CAS-BOT-BC18009  Carex arcta Joseph Prince Tracy 1934-7-13 13389 Humboldt Dow's Prairie. 60 Comment
  UC50827  Carex arcta J. P. Tracy 1901-6-30 1195 Humboldt immediate vicinity of Eureka 0 Comment
  UC562629  Carex athrostachya Joseph P. Tracy 1935-7-23 14140 Humboldt Trinity summit, Corral Prairie Comment
  SEINET7484301 Image available Carex barbarae Peter F. Zika 2009-1 24503 Humboldt E side of Route 96, near town of Hoopa, W side of Trinity River, Outer North Coast Range (NCoRO) 90 Comment
  CAS-BOT-BC19213  Carex barbarae Joseph Prince Tracy 1929-6-23 8606 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC74641  Carex bolanderi M. A. Baker 1980-5-18 1359 Humboldt Near Black Mtn. 792 Comment
  SEINET200966  Carex bolanderi Joseph P. Tracy 1935-6-23 13985 Humboldt Northern Coast Ranges French Camp Ridge. 1067 Comment
  HSC43238  Carex bolanderi R. Sutherland 1977-4-5 5477 Humboldt 386 Comment
  SEINET7552610 Image available Carex bolanderi David Castaner 1989-6-19 10248 b Humboldt Fern Canyon. Comment
  UC1103068  Carex brainerdii Joseph P. Tracy 1942-6-23 17247 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC34013  Carex brevicaulis Joseph Prince Tracy 1939-4-27 16228 Humboldt Mouth of Little River. 9 Comment
  JEPS25962  Carex buxbaumii Joseph P. Tracy 1927-4-23 7916 Humboldt Big Lagoon 3 Comment
  HSC76385  Carex concinnoides L. P. Janeway 1982-6-20 13 Humboldt NE facing slope near ridgetop 1 mi. SE of Horse Mtn. along FS 6N36 1384 Comment
  CHSC98363  Carex densa Thomas W. Nelson; Jane P. Nelson 1982-7-10 7086 Humboldt North Coast Ranges. Along Mad River at Anderson's Ford. 609 Comment
  HSC97784  Carex echinata subsp. echinata Juha Pykala, D. H. Norris 1987-6-11 1618 Humboldt N Trinity Mtn. Wilderness, W of Crogan Hole 1555 Comment
  POM160306  Carex echinata subsp. echinata Joseph P. Tracy 1926-6-27 7666 Humboldt Horse Mountain 1463 Comment
  UC249759  Carex echinata subsp. phyllomanica Joseph P. Tracy with H. E. Parks 1924-8-3 6773 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC48777  Carex echinata subsp. phyllomanica Brad Klipfel 1974-5-11 340 Humboldt SW side of Big Lagoon Comment
  CAS-BOT-BC19964  Carex exsiccata Joseph Prince Tracy 1934-7-13 13388 Humboldt Dow's Prairie. 60 Comment
  POM224512  Carex exsiccata H. C. Cantelow 1936-5-18 s.n. Humboldt 8 miles NE of Orick. Comment
Read comments
Jan 20 2011
  SEINET7708306 Image available Carex feta J. P. Tracy 1950-7-6 19010 Humboldt Albee Road; Buck Mountain, 3 mi S of Burr Valley Comment
  UC1103576  Carex geyeri Joseph P. Tracy 1938-6-13 15901 Humboldt Horse Mountain 1432 Comment
  POM247169  Carex globosa Joseph P. Tracy 1932-4-23 9832 Humboldt Englewood. 91 Comment
  UC562715  Carex globosa Joseph P. Tracy 1932-4-23 9832 Humboldt Englewood North Coast Ranges 91 Comment
  CAS-BOT-BC22315  Carex harfordii Alice Eastwood; John Thomas Howell 1937-6-23 4791 Humboldt Near Dinsmores. Comment
  CAS-BOT-BC22316  Carex harfordii Joseph Prince Tracy 1927-7-17 8279 Humboldt Three Cabins; grassy slopes on lower western foothills of Chaparral Mountain. Edge of pond. 457 Comment
  CAS-BOT-BC21753  Carex hassei Joseph Prince Tracy 1941-5-11 16868 Humboldt Big Lagoon. 152 Comment
  POM160901  Carex hassei Joseph P. Tracy 1924-7-13 6721 Humboldt Big Lagoon. 6 Comment
  UC562718  Carex hassei Joseph P. Tracy 1927-4-23 7917 Humboldt Big Lagoon Northern Coast Region 6 Comment
  JEPS79845  Carex hendersonii Joseph P. Tracy 1911-6-4 3230 Humboldt Northern Coast Region, along Little River, 5 mi from the Coast Little River; Northern Coast Region, Little River 121 Comment
  CHSC90268  Carex hoodii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8542 Humboldt North Coast Ranges. Along Forest Road 13N01 18 miles from junction with State Route 96. 1066 Comment
  HSC74407  Carex hoodii Gail Newton 1980-8-10 2020 Humboldt Near Blake Mtn. 1798 Comment
  CAS-BOT-BC7565  Carex integra Joseph Prince Tracy 1935-7-23 14139 Humboldt Trinity Summit. Open places at Corral Prairie. 1584 Comment
  JEPS79856  Carex lenticularis var. impressa Joseph P. Tracy 1935-7-23 14148 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC48039  Carex leptopoda D. H. Norris 1972-6-26 23032 Humboldt Along Grouse Mtn. Rd., 5 mi. from intersection with Horse Mtn. Rd. Comment
  SEINET7565155 Image available Carex leptopoda David Castaner 1989-6-19 10248 a Humboldt Fern Canyon. Comment
  CAS-BOT-BC31585  Carex luzulina var. luzulina Joseph Prince Tracy 1930-7-16 8987 Humboldt South Fork Mountain, in wet meadow at McKay Camp. 1676 Comment
  CAS-BOT-BC31586  Carex luzulina var. luzulina Joseph Prince Tracy 1939-7-9 16341 Humboldt Snow Camp. 1402 Comment
  UC562657  Carex mariposana Joseph P. Tracy 1935-7-23 14141 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC31823  Carex mendocinensis R. Tallent 1935-7-14 14086 Humboldt Six Rivers National Forest. Roadside of Horse Mtn. 1419 Comment
  HSC102160  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1070 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC32129  Carex multicaulis Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1371 Comment
  CAS-BOT-BC119536  Carex nudata Joseph Prince Tracy 1935-6-22 13959 Humboldt Eel River, at mouth of Larrabee Creek. Comment
  UCR40087  Carex nudata L. P. Janeway 1983-7-23 435 Humboldt Blue Lake Q., North Fork of Mad River at the old Hwy 299 bridge (near the new bridge). 40 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
  CAS-BOT-BC119385  Carex obnupta W. R. Dudley 1899-6-1 s.n. Humboldt Peninsula opposite Eureka. Comment
  UC585634  Carex ovalis Joseph P. Tracy 1937-8-7 15617 Humboldt Murphy Ridge Bald Mt. 914 Comment
  HSC102163  Carex pachystachya M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1073 Humboldt Patterson Meadows 1555 Comment
  UC709399  Carex pachystachya Joseph P. Tracy 1938-7-18 16083 Humboldt Eureka 30 Comment
  CAS-BOT-BC119234  Carex pachystachya Joseph Prince Tracy 1930-7-10 8868 Humboldt Brannan Mountain 1219 Comment
  CAS-BOT-BC118823  Carex preslii Joseph Prince Tracy 1932-6-19 10242 Humboldt Dinsmore's Ranch: on Van Duzen River opposite Buck Mountain. 762 Comment
  CAS-BOT-BC117538  Carex serratodens Joseph Prince Tracy 1926-6-27 7692 Humboldt Horse Mountain. Comment
  HSC104335  Carex serratodens James Regan, Humboldt Redwood Co., LLC Jun 2011 32 Humboldt Kneeland, near Kneeland Airport 854 Comment
  JEPS25961  Carex subbracteata Joseph P. Tracy 1918-7-5 5017 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  SEINET4290245 Image available Carex subbracteata Unknown 2009-1 24497 Humboldt Outer North Coast Range (NCoRo), between Lord-Ellis and Berry summits. Above Chezen Road, at junction with Route 299. Comment
  HSC48739  Carex subfusca Brad Klipfel 1973-6-10 64 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC116682  Carex subfusca Joseph Prince Tracy 1928-6-17 8450 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC49014  Carex tumulicola M. A. Baker 1979-5-25 756 Humboldt Comment
  HSC7084  Carex tumulicola H. E. Parks 1924-8-9 2444 Humboldt Near Carlotta Comment
  UC1103116  Carex tumulicola Joseph P. Tracy 1924-9-14 6876 1/2 Humboldt Butter Valley Northern Caost Ranges 152 Comment
  UC194813  Carex tumulicola Joseph P. Tracy 1906-6-24 2507 Humboldt near, Humboldt Hill, region about Humboldt Bay Fields Landing; Northern Coast Region 0 Comment
  CAS-BOT-BC115537  Carex unilateralis Joseph Prince Tracy 1927-7-17 8276 Humboldt Three Cabins; grassy slopes on lower western foothills of Chaparral Mountain. 457 Comment
  CAS-BOT-BC115539  Carex unilateralis Joseph Prince Tracy 1930-6-15 8756 Humboldt Bordering a pond, Dobbyn Creek 152 Comment
  CHSC107143  Carex utriculata R. E. Brainerd 2009-7-23 1564 Humboldt North Coast Range, South Fork Mountain; 19.6 miles west-northwest of Hayfork. UTM Zone 10 453477E 4494945N. 1661 Comment
  UC562327  Carex utriculata Joseph P. Tracy 1932-7-14 10563 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC562332  Carex utriculata Joseph P. Tracy 8988 Humboldt South Fork Mountain; McKay Camp 1676 Comment
  CHSC43009  Carex viridula subsp. viridula L. P. Janeway 1987-8-30 2534 Humboldt At Dry Lagoon. Middle of lagoon. 3 Comment
  HSC91590  Carpobrotus chilensis E. Mackey 1987-2-5 Humboldt Patrick's Point State Park, area next to Wedding Rock. Comment
  CAS-BOT-BC281884  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie on ridge 1 mile N above Bull Creek, ca 2 miles W of Dyerville Comment
  UCD129942  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie, on ridge 1 m. north above Bull Creek, ca. 2 miles west of Dyerville. Comment
  UC382597  Castilleja Joseph P. Tracy 1925-8-14 7230 Humboldt near Samoa (Samoa Sand Dunes, on Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  BLMAR667  Castilleja affinis subsp. litoralis Jennifer Wheeler 2012-7-12 667 Humboldt King range, Strawberry rock 253 Comment
  UC1196864  Castilleja affinis subsp. litoralis J. P. Tracy 1901-5-12 1084 Humboldt immediate vicinity Eureka 0 Comment
  BLMAR305  Castilleja ambigua subsp. humboldtiensis Jennifer Anthony-Wheeler 2002-7-1 305 Humboldt South Spit 6 Comment
  HSC49512  Castilleja ambigua subsp. humboldtiensis R. York 1979-5-18 299 Humboldt Around Humboldt Bay Comment
  CAS-BOT-BC255521  Castilleja applegatei var. pinetorum F. W. Pennell; J. P. Tracy 1940-7-7 26097 Humboldt Grouse Mountain, w. of Salyer 1554 Comment
  HSC38194  Castilleja attenuata Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  JEPS9969  Castilleja attenuata Lincoln Constance 1934-6-19 916 Humboldt near Grasshopper Peak summit; South Fork Eel River, Bull Creek Region 914 Comment
  CHSC95387  Castilleja exserta C. Sander 2005-8-16 CA 330 -81 Humboldt Ecoregion 14. Humboldt County. Manila Dunes ACEC. 3 Comment
  HSC95071  Castilleja exserta subsp. latifolia Andrea Pickart 2002-7-2 148 Humboldt King Salmon Sand Spit 0 Comment
  JEPS8743  Castilleja foliolosa Joseph P. Tracy 1934-7-9 13329 Humboldt 5 mi s Harris; Mail Ridge 762 Comment
  HSC55670  Castilleja pruinosa Overton, Butler 1979-7-25 9874 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  POM126157  Ceanothus cuneatus Joseph P. Tracy 1922-4-30 5998 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UCD19484  Ceanothus cuneatus John M. Tucker 1948-9-3 1852 Humboldt Six Rivers National Forest (formerly part of Trinity National Forest), on Horse Mountain at junction of road to Grouse Mt. and road to Horse Mt. Mine. 1463 Comment
  HSC38378  Ceanothus incanus J. P. Smith, J. O. Sawyer 1975-4-6 8050 Humboldt Rd. to Shelter Cove, 5 mi from the Whitethorn-Ettersburg junction Comment
  UC1198006  Ceanothus integerrimus Joseph P. Tracy 1937-6-26 15365 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET13945948 Image available Ceanothus integerrimus D. E. Anderson 1965-1 3657 Humboldt At W end of bridge over Trinity River, ca 1/2 mi S of Willow Creek; T6N R5E SEC32 Comment
  HSC36682  Ceanothus parryi R. Sutherland 1975-5-30 5 .30575 Humboldt N of Briceland, Redwood Creek near rd. 177 Comment
  HSC43182  Ceanothus parryi R. Sutherland 1975-7-5 9 .5775 Humboldt 244 Comment
  SBBG4535  Ceanothus parryi H. and M. Dearing 1933-5-15 979 Humboldt near Garberville Comment
  CAS-BOT-BC52045  Ceanothus prostratus Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  CAS-BOT-BC52046  Ceanothus prostratus Doris K. Kildale 1926-4-25 1811 Humboldt Hoopa Mountain 792 Comment
  HSC33413  Ceanothus pumilus Thomas W. Nelson 1974-5-30 1350 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  CAS-BOT-BC52216  Ceanothus thyrsiflorus Doris K. Kildale 1926-4-11 1753 Humboldt Blue Slide in the Van Duzen River Comment
  CAS-BOT-BC52952  Ceanothus thyrsiflorus Kenneth Clark 1980-6-14 684 Humboldt Shelter Cove - Point Delgada quad. Above north fork Dead Man's Gulch. 213 Comment
  CAS-BOT-BC52991  Ceanothus thyrsiflorus Erin Karnatz; Paul Fearn; Ed Kentner 1994-5-14 50 Humboldt ~2 mi. east of Blue Lake; north side of Hwy 299. 152 Comment
  HSC18332  Ceanothus thyrsiflorus D. E. Anderson 1962-2-10 1919 Humboldt 1.5 mi. S of Trinidad Comment
  HSC60290  Ceanothus thyrsiflorus Phyllis Krieg 1979-4-21 Humboldt Near Clam Beach Lagoon Trail, E of Hwy. 101 0 Comment
  CAS-BOT-BC52864  Ceanothus velutinus Volney Rattan 1882-1-1 s.n. Humboldt Road to Knuland Prairie Comment
  UC503021  Ceanothus velutinus Joseph P. Tracy 1932-7-17 10698 Humboldt open ground at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  CDA35602  Ceanothus velutinus T. C. Fuller, T. Gallion 1959-7-23 2817 Humboldt Red Gap Road, 3 miles east of Hoopa. 0 Comment
  CDA39219  Centaurea maculosa Weylan Shaw 2013-8-2 PDR# 120 P06003643 Humboldt Vicinity of Blue Lake, near the Mad River. Comment
  HSC100711  Centaurea melitensis Carl C. Marshall Jun 1886 287 Humboldt Hooker's near Hoopa. Comment
  UC429101  Cephalanthera austiniae P. E. Goddard 1906-6 693 Humboldt Blocksburg Comment
  UCD98057  Cerastium glomeratum H. E. Parks; S. T. Parks 1944-4-1 24279 Humboldt Spruce Cove, Trinidad. 60 Comment
  HSC4106  Cerastium glomeratum R. D. Modafferi 1965-3-19 57 Humboldt .5 mi. S of Trinidad on Hwy. 101 305 Comment
  SEINET6904629  Cerastium glomeratum Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  HSC69761  Chamaesyce maculata Thomas W. Nelson, Jane P. Nelson 1977-9-4 3747 Humboldt Willow Creek Comment
  CDA30234  Chamaesyce serpyllifolia M. K. Beyers, I. Shepardson 2009-9-13 236 Humboldt In dry portion of the eastern side of the Eel River, east of State Route 254 (Avenue of the Giants) and Highway 101. Just west of the unincorporated community of Shively. 0 Comment
  JEPS52363  Chamaesyce serpyllifolia Joseph P. Tracy 1928-9-16 6555 Humboldt near the South Fork; Northern Coast Ranges, Trinity River Valley Comment
  UCD103625  Chamerion angustifolium Linda M. Barker 1976-8-24 1682 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC144090  Chamerion angustifolium subsp. circumvagum J. P. Tracy 1903-8-9 1938 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC55201  Cheilanthes gracillima Overton 1979-8-1 12308 Humboldt Near Mill Cr., close to the town of Hoopa 1402 Comment
  HSC74745  Cheilanthes gracillima Gail Newton 1981-8-7 2426 Humboldt Near Bug Creek Butte 1244 Comment
  CAS-BOT-BC70164  Cheilanthes gracillima Henry M. Pollard 1947-9-1 s.n. Humboldt Peak of Somes Mtn. nr. Orleans 1524 Comment
  CDA3058  Chenopodium ambrosioides B. F. Kemp 1957-11-8 511 -57 Humboldt Orrick. 0 Comment
  CAS-BOT-BC473030  Chenopodium macrospermum var. farinosum Malcom A. Nobs; S. Galen Smith 1949-8-11 1340 Humboldt Marsh at eastern shore of Stone Lagoon Comment
  RSA44459  Chenopodium multifidum H. M. Pollard 1947-8-30 s.n. Humboldt North Road along Klamath River near Redcap Creek. Orleans region. Comment
  UC1225781  Chenopodium murale Joseph P. Tracy 1948-1-11 17949 Humboldt Eureka 30 Comment
  UC179956  Chenopodium murale Joseph P. Tracy 1914-6-26 4519 Humboldt Eureka Northern Coast Region 0 Comment
  HSC71674  Chimaphila menziesii M. A. Baker 1980-6-26 2390 Humboldt Near Sims Creek 610 Comment
  BLMAR529  Chimaphila umbellata Jennifer Wheeler 2009-6-23 529 Humboldt King range, On King Peak road Comment
  SEINET11835174  Chrysanthemum segetum J. P. Tracy 1950-1 18831 Humboldt Eureka Comment
  JEPS37866  Chrysolepis chrysophylla var. chrysophylla W. L. Jepson 1902-6 2150 Humboldt near McKee's Comment
  UC1193060  Chrysolepis chrysophylla var. minor G. W. Tourtillott 1950-10-11 34 Humboldt 1 mi w Queens Peak 609 Comment
  UC906758  Cicendia quadrangularis Joseph P. Tracy 1942-5-16 17342 Humboldt Garberville 152 Comment
  JEPS35983  Cichorium intybus Lincoln Constance 1934-6-25 933 Humboldt Bull Creek Region. South Fork Eel River. On E side of road at Englewood, across the road from Collin's Englewood Campground. Comment
  HSC95389  Cicuta douglasii Andrea Pickart 2002-7-19 187 Humboldt Arcata Marsh in Log Pond 10 Comment
  JEPS156  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt near Arcata (s of Salmon Creek, Mad River); Mad River Comment
  SD58270  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt Marsh south of Salmon Creek Comment
  UC180176  Cicuta douglasii Joseph P. Tracy 1914-9-6 4612 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mountain 1219 Comment
  CAS-BOT-BC284405  Cirsium arvense Doris K. Kildale 1925-7-26 1069 Humboldt Mad River at West End Crossing Comment
  CAS-BOT-BC284441  Cirsium brevistylum L. R. Abrams 1927-9-1 12062 Humboldt Big Lagoon Comment
  UC1238036  Cirsium douglasii var. douglasii H. E. and S. T. Parks 1947-6-1 24441 Humboldt South Fork Camp Willow Creek Comment
  CAS-BOT-BC285533  Cirsium occidentale var. candidissimum Carl B. Wolf 1934-6-30 5839 Humboldt 7 mi. from Shelter Cove on road to Briceland 152 Comment
  CAS-BOT-BC288722  Cirsium remotifolium Joseph P. Tracy 1934-7-6 13659 Humboldt Kneeland Prairie 762 Comment
  UC1052188  Cirsium vulgare J. L. Meyer 1954-10-11 30 Humboldt 3 m n Blocksburg; Quad. No. 29A3 457 Comment
  HSC75274  Cirsium vulgare J. O. Sawyer, D. A. Thornburgh 1980-9-9 4081 Humboldt Mill Creek Lake and surrounding meadows Comment
  HSC96518  Cirsium vulgare Gordon Leppig 1998-8-23 1071 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  CAS-BOT-BC439048  Cistanthe monosperma Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt., near Orleans 1828 Comment
  HSC23113  Clarkia amoena Norman Dennis 1965-6-19 133 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
  HSC45282  Clarkia amoena Clifton Raymond Chesbrough 1971-7-26 100 Humboldt 2 mi. N of Trinidad Comment
  CAS-BOT-BC160975  Clarkia amoena subsp. amoena Joseph P. Tracy 1909-7-31 3026 Humboldt Kneeland Prairie 762 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
  POM214926  Clarkia purpurea subsp. purpurea Joseph P. Tracy 1932-6-26 10264 Humboldt North Coast Ranges: Valley of South Yager Creek 762 Comment
  POM208995  Clarkia purpurea subsp. quadrivulnera Lincoln Constance 1934-5-23 619 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park. 366 Comment
  UC180230  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1914-7-5 4569 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA108220  Clarkia purpurea subsp. viminea Harlan Lewis, M. Lewis 1947-6-14 422 Humboldt Highway 36 at south fork of Van Duzen River Bridge (4-119) Comment
  HSC55143  Claytonia cordifolia G. L. Clifton, Terry Griswold 1979-8-1 12036 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC45098  Claytonia exigua subsp. exigua R. Sutherland 1978-4-23 26 .23478 Humboldt 729 Comment
  UC494113  Claytonia parviflora subsp. parviflora H. E. Parks, J. P. Tracy 1930-5-25 877 Humboldt Laribee Valley Comment
  CHSC93570  Claytonia perfoliata subsp. mexicana Charles E. Fellows 1972-4-29 484 Humboldt 8 mi. e.s.e. of Eureka, 3.1 mi. above town of Freshwater on the w. side of road to Kneeland. Ca. 20 m below road. 609 Comment
  JEPS43187  Claytonia perfoliata subsp. mexicana Joseph P. Tracy 1916-4-30 4682 Humboldt Table Bluff Northern Coast Ranges, Humboldt Bay (aroung Humboldt Bay) 152 Comment
  JEPS43376  Claytonia perfoliata subsp. mexicana Lincoln Constance 1934-5-26 681 Humboldt North Dyerville Flat grove South Fork Eel River, Bull Creek (near Founders' Tree) 48 Comment
  UC494168  Claytonia perfoliata subsp. perfoliata H. E. Parks, J. P. Tracy 1930-5-25 877 Humboldt Laribee Valley Comment
  HSC24337  Claytonia perfoliata subsp. perfoliata C. E. Fellows 1971-8-16 398 Humboldt Clam Beach, near end of Central Ave. Comment
  RSA249332  Claytonia rubra D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5610 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC39958  Claytonia rubra subsp. depressa Linda M. Barker 1976-4-13 1378 Humboldt 3 mi. W of Arcata Comment
  UCD100844  Claytonia rubra subsp. depressa Linda M. Barker 1976-2-22 1316 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET200312  Claytonia rubra subsp. rubra J. P. Tracy 1913-6-16 4141 Humboldt Dinsmore's Ranch in valley of Van Duzen River opposite Buck Mt. 762 Comment
  HSC41232  Claytonia saxosa Brad Klipfel 1974-5-8 322 Humboldt Horse Mtn. Comment
  HSC82185  Claytonia saxosa Thomas W. Nelson 1977-6-15 3442 Humboldt Along old road to ski area 1372 Comment
  UC535735  Claytonia sibirica Eleanor Armstrong 1162 Humboldt Richardson Grove Comment
  UCR86959  Claytonia sibirica Walter Wisura 1993-5-9 4909 Humboldt Northwest; Hwy 299, 5.7 mi west of Willow Creek at E-fork camp ground 730 Comment
  HSC17735  Claytonia sibirica P. Markle 1962-4-26 15 Humboldt Entrance to trail to HSU campus from City of Arcata reservoir road 30 Comment
  SEINET202283  Claytonia sibirica J. P. Tracy 1950-7-2 18960 Humboldt Fern Spring Happy Camp Mt. in Trinity Summit Range 6 mi NE of Hawkins Bar 1280 Comment
  UC1282109  Claytonia sibirica Victor Duran 1933-5-11 3407 Humboldt 6 mi w Bridgeville; Van Duzen River Comment
  HSC99240  Claytonia washingtoniana C. E. Fellows 1971-4-10 424 Humboldt About 1 mi. S of College of the Redwoods, W side of surface road Comment
  CAS-BOT-BC92597  Clematis ligusticifolia Carl D. Duncan 1920-9-21 314 Humboldt On floor of Hoopa Valley. Comment
  UC183678  Clematis ligusticifolia Joseph P. Tracy 1912-8-3 3963 Humboldt opposite Buck Mt. (Dinsmore's Ranch, valley of Van Duzen R.); Northern Coast Ranges, valley of Van Duzen R., Dinsmore's Ra 762 Comment
  HSC14644  Clianthus puniceus R. A. Magie 1964-5-3 58 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  CAS-BOT-BC499965  Clintonia uniflora Mrs. H. C. Cantelow 1939-6-5 s.n. Humboldt Near Van Duzen River, 1 1/2 miles west of Dinsmore Comment
  UC582461  Collinsia grandiflora Joseph P. Tracy 1927-6-12 8159 Humboldt Horse Mtn; Northern Coast Ranges; Horse Mtn 1219 Comment
  HSC65475  Collinsia linearis Gail Newton 1980-6-24 580 Humboldt Near Ladder Rock 1570 Comment
  RSA60814  Collinsia linearis Frank W. Gould 1939-5-30 831 Humboldt Southwestern side of Horse Mountain. 762 Comment
  JEPS26114  Collinsia parviflora Peter H. Raven with R. Snow 1958-7-20 13634 Humboldt 2.8 mi s jct of Titlow Hill and Friday Ridge rds (near Grouse Mtn) Comment
  UC1196763  Collinsia rattanii Joseph P. Tracy 1908-6 2704 Humboldt opposite Buck Mountain (Northern Coast Ranges, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC45589  Collomia heterophylla Diane L. Reed 1978-5-27 137 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  HSC53963  Collomia heterophylla Griswold, Butler 1979-7-11 7017 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC70776  Collomia heterophylla R. York 1980-5-17 551 Humboldt Near Le Perron Peak. 415 Comment
  HSC44406  Collomia heterophylla R. York 1978-5-6 158 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 Comment
  UC133645  Collomia heterophylla Joseph P. Tracy 1909-7-31 3046 Humboldt on gravelly hillside Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1197858  Collomia tracyi Joseph P. Tracy 1933-8-30 13052 Humboldt gravelly opening in woods North Coast Ranges, Grouse Mountain 1524 Comment
  CAS-BOT-BC157349  Comarum palustre Carl B. Wolf 1927-8-22 775 Humboldt Big Lagoon Comment
  HSC36436  Conium maculatum John Rehlingl 1974-6-27 Humboldt Along Alliance Rd. Comment
  HSC38916  Conium maculatum J. P. Smith 1973-5-26 6794 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC49219  Coptis laciniata J. O. Sawyer 1977-4-23 2846 Humboldt Dagsaw Spring on road to Onion Mtn. 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
Read comments
Jan 22 2014
  HSC99341  Corallorhiza maculata T. Jimerson, J. Pageau 1979-6-12 526 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  UC14983  Corallorhiza maculata J. Burtt Davy and W. C. Blasdale 1899-6-18 5622 Humboldt Bald Mt. Comment
  UCD138919  Corallorhiza maculata Kenneth D. Stewart 1965-7-13 s.n. Humboldt U.S. Highway 299, ca. 20 miles east of Blue Lake. Comment
  HSC97979  Corallorhiza mertensiana Cara Witte 2007-7-8 428 Humboldt Board Camp Mountain. Pack trail 4E26. 1463 Comment
  UC1196460  Corallorhiza mertensiana Joseph P. Tracy 1918-6-23 4960 Humboldt near Boynton Prairie; Northern Coast Ranges, around Humboldt Bay 304 Comment
  UC1196463  Corallorhiza striata Joseph P. Tracy 1926-5-15 7497 Humboldt Ashfield Butte Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC78076  Cordylanthus maritimus subsp. palustris Craig Martz 1984-7-18 204 Humboldt Samoa Peninsula, about 100 feet E of paved parking area at the junction of Hwy. 255 and Vance Ave, upper edge of marsh. Comment
  HSC90429  Cordylanthus maritimus subsp. palustris Jean Hanson 1980-6-22 98 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  UC582559  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1933-8-22 12991 Humboldt mouth of Eel River (in salt marsh) 3 Comment
  JEPS25066  Cordylanthus pilosus subsp. pilosus Joseph P. Tracy 1912-8-3 3977 Humboldt opposite Buck Mt.; Valley of Van Duzen River 762 Comment
  POM21204  Cordylanthus pilosus subsp. pilosus L. R. Abrams 1916-7-10 5964 Humboldt Between Harris and Alder Pt. Comment
  UC1239004  Cordylanthus tenuis subsp. viscidus Freed W. Hoffman 1949-7-14 3063 Humboldt sw Mt. Lassic Lookout; North Coast Ranges, Pine Point Ridge Comment
  HSC100234  Cordyline australis J. P. Smith 2010-5-29 12891 Humboldt Eureka; Near intersection of West Del Norte St. and Railroad Ave. Comment
  BLMAR678  Corethrogyne filaginifolia Jennifer Wheeler 2013-7-12 678 Humboldt King range, Johnny Jack Ridge 677 Comment
  CAS-BOT-BC101142  Corethrogyne filaginifolia Joseph P. Tracy 1936-7-10 15046 Humboldt Vicinity of Carlotta 30 Comment
  CAS-BOT-BC101147  Corethrogyne filaginifolia W. R. Dudley 1899-6-1 s.n. Humboldt Eureka [Penninsula] Peninsula Comment
  CAS-BOT-BC212006  Cornus nuttallii Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC39628  Cornus nuttallii Thomas W. Nelson, Jane P. Nelson 1976-6-15 2733 Humboldt Just W of Goat Hill, along branch road off FS 2S08 1463 Comment
  HSC97510  Cornus nuttallii Cara Witte 2007-5-21 72 Humboldt Along National Forest 1. Approximately 1 mile north of White Oak Opening. 1272 Comment
  UC35022  Cornus nuttallii Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie Comment
  UC906755  Cornus nuttallii Joseph P. Tracy 1945-11-11 17516 Humboldt along Trinity Hwy. Willow Creek Canyon 762 Comment
  SEINET12137714  Cornus nuttallii F. H. Utech 1988-1 88 -278 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, bluff above Van Duzen River 800 Comment
  UC249592  Cornus sessilis Joseph P. Tracy 1921-8-21 5941 Humboldt Trinity R. at mouth of S. Fork <Trinity R.>; Northern Coast Ranges, Trinity R. 152 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
  UC1103505  Corylus californica Joseph P. Tracy 1909-8-29 3080 Humboldt Humboldt Hill, N side Northern Coast Region, region about Humboldt Bay 0 Comment
  UC1222290  Corylus californica Joseph P. Tracy 1950-7-31 19226 Humboldt about 1 mi N of Friday's Camp (where road crosses side of Friday Ridge) Comment
  HSC31123  Corylus cornuta subsp. californica J. O. Sawyer 1970-6-24 2260 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  HSC104410  Corylus cornuta subsp. californica Adam N. Canter 2017-6-15 9 Humboldt Near Fields Landing; Humboldt Hill, Spring Street 100 Comment
  UCR32167  Corylus cornuta var. californica David J. Keil 1983-7-2 17312 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  CHSC19513  Cotula coronopifolia J. F. Knezevich 1968-5-14 431 Humboldt Collected 13 miles south of Ferndale at Cape Mendocino. Comment
  SEINET3817856  Cotula coronopifolia Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-9 15319 Humboldt Clam beach, 15 miles north Eureka Comment
  UC492243  Crassula connata var. subsimplex Joseph P. Tracy 1931-3-26 9293 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R., Alton 30 Comment
  UCD112977  Crataegus douglasii Louis C. Wheeler 1950-8-14 6780 Humboldt 5 mi. east of Shelter Core. 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
  UC1071676  Crepis capillaris H. L. Person 1932-7-19 Humboldt Lindsay Creek Eureka Quadrangle Comment
  POM289673  Crepis capillaris Lyman Benson 1929-7-12 1798 Humboldt Weott Ranger Station; S Fork Eel River. Comment
  UC302296  Crepis pleurocarpa Joseph P. Tracy 1926-6-20 7621 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  UC485361  Crepis pleurocarpa P. E. Goddard 1906-6 660 Humboldt Lasseck Pk. Comment
  RSA43684  Crepis setosa H. M. Pollard 1948-8-8 s.n. Humboldt Roadside between Orleans and Camp Creek Comment
  UC249531  Crocidium multicaule Joseph P. Tracy 1922-5-29 6075 Humboldt Sout Yager Creek Valley 762 Comment
  CDA2722  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-3 17446 Humboldt Northwest corner of overpass of Hwy 101 freeway to Garberville, 1 miles south of Fields Landing. 0 Comment
  UC1103234  Crypsis vaginiflora Joseph P. Tracy 1931-9-7 9668 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC3566  Cryptantha affinis J. P. Tracy, H. E. Parks 1934-6-27 11059 Humboldt Grouse Mtn. Comment
  HSC3608  Cryptantha intermedia var. hendersonii H. E. Parks, J. P. Tracy 1934-6-14 11021 Humboldt Horse Mtn. near Arford cabin 1220 Comment
  HSC104443  Cryptantha leiocarpa Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 3 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC1239665  Cryptantha leiocarpa Joseph P. Tracy 1927-6-26 8212 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  UCSB14885  Cryptantha leiocarpa 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  UC71489  Cryptogramma acrostichoides Joseph Burtt Davy and W. C. Blasdale 1899-6-21 5844 Humboldt Trinity Summit Comment
  RSA640954  Cuscuta californica K. Thorne, P. C. Everett 1965-8-9 35305 Humboldt Big Lagoon 3 Comment
  HSC6390  Cuscuta californica J. P. Tracy 1930-7-16 8912 Humboldt S Fork Mtn. near McKay Camp 1677 Comment
  CDA39936  Cuscuta campestris W. Simas 1965-8-25 s.n. Humboldt Bartlett property, Shively. 0 Comment
  HSC3640  Cynoglossum grande Elrid H. Spinas 1948-5-15 3 Humboldt Horse Mtn. Comment
  HSC3643  Cynoglossum grande S. S. Stutz 1963-4-21 26 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  UC1239626  Cynoglossum grande Joseph P. Tracy 1923-3-17 6166 Humboldt vicinity of Garberville; Northern Coast Ranges 121 Comment
  SEINET11696011  Cynosurus cristatus Unknown 1956-7-19 s.n. Humboldt 4.5 mi NW of Petrolia Comment
  HSC73571  Cynosurus echinatus Gail Newton 1980-7-14 1508 Humboldt Near Last Chance Ridge. 1219 Comment
  UC1145093  Cynosurus echinatus Joseph P. Tracy 1944-7-3 17486 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  RSA183563  Cyperus eragrostis D. E. Anderson 1963-9-29 2848 Humboldt Fish Lake. Comment
  UC535738  Cyperus eragrostis Eleanor Armstrong 1157 Humboldt Richardson Grove Comment
  CDA38926  Cyperus eragrostis Gordon Leppig 1998-6-26 859 Humboldt McKinleyville, Hammond Trail, 100 m south of Knox Cove. Comment
  POM89790  Cyperus erythrorhizos Joseph P. Tracy 1920-8-15 5364 Humboldt Klamath River, at mouth of Bluff Creek 152 Comment
  CAS-BOT-BC113831  Cyperus niger var. capitatus Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans. Comment
  JEPS64063  Cyperus squarrosus Joseph P. Tracy 1916-9-5 4773 Humboldt 4 mi. above mouth S. Fork Eel R.; Northern Coast Ranges, S. Fork Eel R. 60 Comment
  UC1103635  Cyperus squarrosus Joseph P. Tracy 1921-9-4 5952 Humboldt mouth of S. Fork Trinity (Trinity R. Valley near Willow Creek); Northern Coast Ranges, Trinity R. Valley, S. Fork Trinity 152 Comment
  HSC98411  Cyperus strigosus Edward G. Kynoch, Jr. 1966-9-23 407 Humboldt Near Trinity River, and Willow Creek 142 Comment
  HSC74653  Cystopteris fragilis M. A. Baker 1980-5-17 1226 Humboldt Near Le Perron Peak 792 Comment
  HSC97609  Cystopteris fragilis Cara Witte 2007-6-4 203 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC98728  Cystopteris fragilis Cara Witte 2007-7-20 563 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1460 Comment
  HSC14671  Cytisus scoparius Harvey Doerksen 1962-5-22 26 Humboldt .5 mi. E of Hwy. 299-101 junction. Comment
  CAS-BOT-BC189763  Dactylis glomerata Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  HSC22835  Dactylis glomerata B. D. Rogers 1964-4-28 28464 Humboldt Humboldt State campus near Redwood Hall parking lot Comment
  HSC9542  Dactylis glomerata S. R. Johnson 1965-5-10 54 Humboldt 1.0 mi. N of Luffenholtz Beach Comment
  UC37938  Dactylis glomerata Joseph Burtt Davy and Walter C. Blasdale 1899-6-16 5557 Humboldt Scotia Comment
  HSC45108  Danthonia californica R. Sutherland 1978-5-2 4 .2578 Humboldt 341 Comment
  UC1152022  Danthonia californica Joseph P. Tracy 1951-6-26 19572 Humboldt Snow Camp and Twin Lakes vicinity Comment
  UC718006  Danthonia californica David D. Keck 1944-7-11 5493 Humboldt 3 mi ne Capetown 152 Comment
  UC1103260  Danthonia californica var. americana Joseph P. Tracy 1949-8-11 18475 Humboldt 2-6 mi s Grouse Mt.; Kinsey Ridge 1280 Comment
  UC526686  Danthonia californica var. americana Joseph P. Tracy 1931-5-31 9548 Humboldt Kneeland Prairie Northern Coast Ranges 792 Comment
  HSC98100  Danthonia unispicata Cara Witte 2007-6-20 306 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  UCD61361  Danthonia unispicata R. Tofsrud 1948-9-3 Humboldt Road junction near summit of Horse Mt. 1463 Comment
  SBBG44189  Darmera peltata K. K. Muller 1954-6-21 630 Humboldt Mad River Camp 2, Mad River, below Ruth Post Office Comment
  RSA520566  Datisca glomerata M. Hanson 1990-5-22 84 Humboldt In the Trinity River, 75 meters E of the Hwy 96 bridge N of Hoopa. Comment
  CDA9725  Daucus carota D. G. Kelch 2007-7-25 7 .508 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  UC154249  Daucus pusillus J. P. Tracy 1909-7-18 3021 Humboldt sand hills of Ocean Beach at Samoa opposite Eureka Comment
  HSC34963  Delphinium decorum subsp. tracyi Thomas W. Nelson 1975-5-24 1861 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC97582  Delphinium decorum subsp. tracyi Cara Witte 2007-5-23 105 Humboldt Near Grouse Mtn. Along 4N32. Approximately 0.5 mi. S of intersection with 5N04 and 4N32E. 1398 Comment
  HSC56322  Delphinium glaucum Overton, Butler 1979-8-2 12662 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA46895  Delphinium nudicaule Doris K. Kildale 1927-5-15 3164 Humboldt Petrolia Comment
  UC1196331  Delphinium nudicaule Joseph P. Tracy 1923-6-3 6260 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC32854  Delphinium trolliifolium Thomas W. Nelson, James Nelson 1973-5-28 942 Humboldt McKeown Ranch N of Dinsmore Comment
  RSA254789  Delphinium trolliifolium Thomas W. Nelson, James Nelson 1973-5-28 942 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC37428  Delphinium trolliifolium D. W. Snell 1964-4-18 49 Humboldt Mad River bottom, 3 mi. N of Blue Lake Comment
  UC1222573  Delphinium trolliifolium Joseph P. Tracy 1950-6-25 18883 Humboldt nw slope Buck Mountain, Burr Valley 1066 Comment
  UC1299388  Delphinium trolliifolium Freed W. Hoffman 1946-5-20 964 Humboldt hills near Capetown Comment
  JEPS2559 Image available Dentaria californica Joseph P. Tracy 1921-3-20 5426 Humboldt 12 mi e Hydesville (Van Duzen River at Blue Slide); Northern Coast Ranges, Van Duzen River; Van Duzen River at Blue Slide, E of Hydesville, Humboldt Co. 91 Comment
  UCD61253  Deschampsia cespitosa Malcolm A. Nobs; S. Galen Smith 1949-8-3 1167 Humboldt 1 mile south of Fields Landing, Eel River Valley. Comment
  UCR32148  Deschampsia cespitosa subsp. beringensis David J. Keil 1983-7-2 17301 Humboldt Humboldt Bay salt marsh at Arcata Corporation Yard [600 G St.] Comment
  HSC99038  Deschampsia elongata Cara Witte 2007-6-13 263 Humboldt Along Forest Service Road 5N04. Near spring by Grouse Mountain. 1583 Comment
  HSC99096  Deschampsia elongata Cara Witte 2008-7-14 889 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. 1431 Comment
  HSC26869  Dicentra formosa Clifton Raymond Chesbrough 1973-6-19 93 Humboldt 1/2 mi. N of College Cove Comment
  SJSU1033  Dicentra formosa A. C. Browne 1950-5-23 Humboldt Weott Comment
  HSC99360  Dicentra formosa subsp. formosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 9 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA273432  Dicentra formosa subsp. formosa M. A. Baker 1977-4-23 176 Humboldt 2.5 miles South of Shelter Cove Road. South fork of Bear Creek at Wailaki Campground. 561 Comment
  CAS-BOT-BC402403  Dicentra formosa subsp. formosa L. R. Abrams 1918-6-12 7084 Humboldt Cottage Nurseries, Eureka Comment
  CAS-BOT-BC209194  Dichanthelium acuminatum subsp. acuminatum Joseph P. Tracy 1931-5-17 9427 Humboldt Along river, Willow Creek, Trinity River Valley. 152 Comment
  CAS-BOT-BC209196  Dichanthelium acuminatum subsp. acuminatum Joseph P. Tracy 1900-8-26 925 Humboldt Eureka 60 Comment
  UC1005674  Dichelostemma capitatum Frank W. Gould 1939-5-30 838 Humboldt about 25 mi due e Eureka (near top of Horse Mountain); Horse Mountain 1100 Comment
  HSC24401  Dichelostemma ida-maia J. O. Sawyer 1970-6-24 2216 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  CAS-BOT-BC501026  Dichelostemma ida-maia H. D. Ripley; R. C. Barneby 1945-6-16 6810 Humboldt S. of Weott 91 Comment
  UC198610  Digitalis purpurea Joseph P. Tracy 1917-5-30 4790 Humboldt Dows Prairie Comment
  UCD64093  Digitaria sanguinalis Joseph P. Tracy 1942-9-13 17316 Humboldt Eureka. 30 Comment
  SBBG26842  Diplacus kelloggii L. Constance, R. C. Rollins 1941-5-12 Humboldt bluffs at jct of Klamath and Salmon Rivers, 1 mi S of Somes Bar 152 Comment
  SEINET8208225  Diplacus kelloggii Marshall Ross 1942-5-5 1255 Humboldt Trinity National Forest; Hoopa Indian Reservation; 4.6 miles north of Hoopa. 244 Comment
  UCD137492  Dipsacus fullonum Joseph P. Tracy 1937-8-3 15610 Humboldt along Mad River, near Blue Lake. 15 Comment
  UC1197658  Disporum hookeri Joseph P. Tracy 1937-7-2 15409 Humboldt Trinity Summit, head of Little Hors-Linto Creek Little Hors-Linto Creek; Trinity Summit, Little Hors-Linto Creek 1371 Comment
  UC535769  Disporum hookeri Eleanor Armstrong 1934-5-27 Humboldt Richardson Grove Comment
  RSA520552  Disporum hookeri var. hookeri Michael A. Hanson 1990-5-22 83 Humboldt Between Weitchpec and Orleans on Bluff Creek Road, 4.6 miles (7.4) west of highway 96. Comment
  POM319490  Disporum smithii Patricia Wilder 1968-8-22 4424 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  UCR67630  Disporum smithii Michael A. Hanson 1990-5-21 71 Humboldt Little Creek Trail in Redwood National Park; on the E side of Hwy 101 c. 7 mi (11 km) south of Klamath. 325 Comment
  RSA46820  Disporum smithii Doris K. Kildale 1926-3-26 1636 Humboldt Old Kneeland road. Comment
  SDSU11887  Disporum smithii Harvey 1938-8-13 2243 Humboldt Humbolt State Redwood Park Comment
  CAS-BOT-BC208661  Distichlis spicata Joseph P. Tracy 1933-8-22 12989 Humboldt Mouth of Eel River 3 Comment
  UC249802  Distichlis spicata Joseph P. Tracy 1923-6-19 6286 Humboldt Mouth of Davies Creek Comment
  UC203975  Dodecatheon hendersonii Joseph P. Tracy 1918-5-28 4947 Humboldt High Prairie on Bald Mountain Northern Coast Ranges, High Prairie on Bald Mountain 1066 Comment
  UC562750  Dodecatheon jeffreyi Joseph P. Tracy 1927-8-22 8340 Humboldt in cold wet meadow near High Prairie (Bald Mountain); Northern Coast Ranges, , nr High Prairie 1066 Comment
  UC1243950  Downingia elegans Joseph P. Tracy 1947-6-28 17748 Humboldt Larrabee Valley 731 Comment
  RSA20854  Downingia yina C. B. Wolf 1937-6-18 8894 Humboldt 1/2 mile S of Fortuna. 15 Comment
  RSA654125  Downingia yina Beecher Crampton 1956-6-26 3651 Humboldt Margin of Snow's Lake, 3.5 miles east of Seigler Springs Comment
  HSC49811  Drosera rotundifolia R. York 1979-4-13 227 Humboldt Big Lagoon Bog. Comment
  HSC59622  Drymocallis glandulosa J. P. Smith, Steve Selva 1970-6-30 4148 Humboldt Comment
  CAS-BOT-BC159613  Drymocallis glandulosa var. glandulosa Doris K. Kildale 1929-5-26 9136 Humboldt Klamath River at Orleans 152 Comment
  HSC76190  Drymocallis glandulosa var. reflexa Overton, Butler 1979-7-24 9773 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UC903191  Drymocallis glandulosa var. wrangelliana Mrs. H. P. Bracelin 1931-5-2 285 Humboldt 3.5 mi s Alton; s of Alton Comment
  RSA21039  Drymocallis glandulosa var. wrangelliana Carl B. Wolf 1937-6-19 8908 Humboldt Van Duzen River at Dunns Mill, 5 miles below Bridgeville. 91 Comment
  CAS-BOT-BC70875  Dryopteris arguta Ira L. Wiggins 1957-6-21 14140 Humboldt E side of road, 1 mi. S of Garberville Comment
  JEPS35200  Dryopteris arguta W. L. Jepson 1932-8-9 16542 Humboldt Deerfoot Glade Bull Creek 121 Comment
  JEPS4047  Dryopteris expansa Roland A. Dede 1952-12-6 2834 Humboldt Ferndale Comment
  POM188328  Dryopteris expansa Marcus E. Jones 1931-8-2 29171 Humboldt Klamath Comment
  CAS-BOT-BC113802  Dulichium arundinaceum Joseph Prince Tracy 1938-9-25 16173 Humboldt Dense masses in shallow water, Bald Mountain, at Lake Prairie. 1066 Comment
  HSC44817  Dulichium arundinaceum Bruce G. Marcot 1977-7-21 Humboldt Big Lake Comment
  CAS-BOT-BC197062  Echinochloa crus-galli Henry M. Pollard 1945-8-24 s.n. Humboldt Near Harley place Comment
  HSC44325  Eleocharis acicularis Thomas W. Nelson, Jane P. Nelson 1977-7-4 3592 Humboldt Margin of drying pond above Alder Springs 1585 Comment
  JEPS19331  Eleocharis pachycarpa Joseph P. Tracy 1935-6-8 13947 Humboldt along coast in front of Stone Lagoon (Dry Lagoon); Dry Lagoon 3 Comment
  SD129632  Eleocharis pachycarpa Harold E. Parks June 1934 5275 Humboldt Trinidad, Spruce Cove. (IPB 10/07) Comment
  CAS-BOT-BC113206  Eleocharis parishii Doris K. Kildale 1927-7-3 3664 Humboldt Willow Creek Flat, swampy outflow from spring. Comment
  HSC73057  Elymus X hansenii M. A. Baker 1980-7-23 3163 Humboldt Near Orleans Mtn. 1859 Comment
  SEINET201037  Elymus X hansenii Joseph P. Tracy 1930-7-16 9054 Humboldt South Fork Moutain, open glades along summit near Blake lookout. Comment
  UC526782  Elymus elymoides subsp. elymoides Joseph P. Tracy Jul 16 1930-Jul 19 1930 8955 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  HSC58627  Elymus elymoides var. elymoides Overton, Butler 1979-7-31 11458 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC1804  Elymus glaucus William J. Ferlatte, B. D. Rogers 1966-6-15 2107 Humboldt Larabee Valley 762 Comment
  HSC54604  Elymus glaucus Overton, Butler 1979-7-24 9688 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC203477  Elymus glaucus subsp. glaucus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC203479  Elymus glaucus subsp. glaucus Doris K. Kildale 1929-5-26 9133 Humboldt Klamath River at Orleans 152 Comment
  UC212884  Elymus glaucus subsp. virescens Joseph P. Tracy 1920-7-4 5340 Humboldt Little River Beach Northern Coast Ranges (rocky bluffs facing ocean) 15 Comment
  HSC98130  Elymus hispidus Cara Witte 2007-6-28 387 Humboldt Forest Service Road 5N10. 1293 Comment
  HSC74674  Elymus multisetus Gail Newton 1981-7-23 2269 Humboldt Near Bug Creek Butte 1494 Comment
  SEINET200638  Elymus virescens Joseph P. Tracy 1927-6-26 8215 Humboldt Stone Lagoon. 6 Comment
  UC1541559  Epilobium H. E. and S. T. Parks July 1937 24050 Humboldt Spruce Cove Trinidad 64 Comment
  RSA39090  Epilobium angustifolium var. macrophyllum P. A. Munz 1948-8-15 12361 Humboldt 2 miles west of Hydesville Comment
  UC505111  Epilobium brachycarpum Joseph P. Tracy 1932-5-22 10112 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  UC562421  Epilobium brachycarpum Joseph P. Tracy 1933-8-6 12942 Humboldt French Camp Ridge 1066 Comment
  HSC101058  Epilobium ciliatum John McRae 1997-7-2 240 Humboldt Near south portion of Lassics Botanical Area; Van Duzen Rd off Hwy. 36 to Forest Service Rd. 1S07, west on FS Rd. 2S08 to 2S08C, ~ 5 mi. further 1555 Comment
  HSC48852  Epilobium ciliatum subsp. ciliatum Brad Klipfel 1973-7-15 211 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC205232  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1920-8-15 5376 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  HSC43235  Epilobium ciliatum subsp. ciliatum R. Sutherland 1976-8-19 3 .19876 Humboldt 259 Comment
  UC722075  Epilobium ciliatum subsp. ciliatum C. L. Hitchcock and J. S. Martin 1939-7-14 5441 Humboldt 7 mi e Shelter Cove 243 Comment
  POM225523  Epilobium ciliatum subsp. watsonii P. A. Munz 1936-8-13 14385 Humboldt Clam Beach Comment
  UC562516  Epilobium densiflorum Joseph P. Tracy 1934-7-9 13352 Humboldt bed of dry pond Dobbyn Creek 152 Comment
  RSA181876  Epilobium hallianum Joseph P. Tracy 1930-7-16 8977 Humboldt Northern Coast Ranges: South Fork Mountain; in wet meadow at McKay Camp 1677 Comment
  HSC75356  Epilobium minutum J. O. Sawyer, M. A. Ericksen 1980-7-18 3643 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  HSC76622  Epilobium minutum Denis Kearns 1981-7-22 322 Humboldt Near Whiteys Peak. 1487 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
  HSC63171  Epilobium septentrionale M. A. Baker 1979-7-7 1017 Humboldt 9.5 km E of Berry Summit along Hwy. 299, N bank of Willow Creek Comment
  RSA1439  Epilobium septentrionale E. R. Johnson 1929-08 1437 Humboldt Eel River. 91 Comment
  UC1198495  Epilobium torreyi Joseph P. Tracy 8744 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  POM232041  Epipactis gigantea I. L. Wiggins 1930-7-8 4677 Humboldt Sandstone cliffs along the Eel River, near Scotia Comment
  HSC60046  Equisetum arvense M. A. Baker 1978-5-6 508 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  CAS-BOT-BC56974  Equisetum arvense Joseph P. Tracy 1937-7-2 15391 Humboldt Happy Camp Mountain (in Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  HSC71087  Equisetum arvense Thomas W. Nelson, Jane Nelson 1977-5-30 3406 Humboldt Back bay of Mad River at Anderson's Ford 640 Comment
  CAS-BOT-BC57789  Equisetum telmateia Henry M. Pollard 1945-9-1 s.n. Humboldt Road to Camp Creek, Klamath River Canyon. Comment
  HSC36227  Equisetum telmateia subsp. braunii John Rehling 1975-4-21 52 Humboldt Along Jolly Giant Creek behind HSU campus. Comment
  HSC12909  Equisetum telmateia subsp. braunii Steve Dorei 1970-10-16 73 Humboldt HSC campus, behind Johnson House Comment
  RSA23654  Equisetum telmateia var. braunii C. B. Wolf 1939-7-6 9515 Humboldt Along Larabee Creek, 5.8 mi below Blocksburg on road to Bridgeville. Comment
  HSC9785  Eragrostis mexicana subsp. virescens J. P. Tracy 1931-9-7 9653 Humboldt Trinity River Valley, Willow Creek Comment
  UC212870  Eragrostis pilosa var. pilosa Joseph P. Tracy 1920-8-15 5361 Humboldt mouth of Bluff Creek (Klamath R.); Northern Coast Ranges, Klamath R. 152 Comment
  UCR52249  Erechtites argutus H. E. Parks 1937-1 24033 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  UCD117420  Erica lusitanica T. C. Fuller 1961-3-22 5938 Humboldt N. slope Humboldt Hill, Eureka. Comment
  UC1223016  Erigeron aliceae Joseph P. Tracy 1950-7-31 19237 Humboldt top of Grouse Mountain 1524 Comment
  HSC29848  Erigeron glaucus Thomas W. Nelson 1971-11-11 596 Humboldt Sand dunes at the foot of Murray Rd. McKinleyville Comment
  CAS-BOT-BC308846  Erigeron glaucus A. A. Heller 1937-6-12 15915 Humboldt Trinidad on the coast near the Whaling Station, foot of the grade leading up to the lighthouse on Trinidad Head Comment
  RSA246776  Erigeron glaucus R. F. Thorne, Percy C. Everett 1965-8-7 35220 Humboldt Samoa Peninsula. 3 Comment
  UC165064  Erigeron inornatus var. inornatus Joseph P. Tracy 1908-7-1 2894 Humboldt ridge between Van Duzen River and Mad River (near low gap, Humboldt and Trinity Counties); Trinity County 914 Comment
  HSC95874  Erigeron maniopotamicus Thomas W. Nelson, Sydney Carothers 2004-6-18 9253 Humboldt Board Camp Mountain Road off Forest Service Road 49N38, 1 mile from junction with Forest Service Road 1. 1482 Comment
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Jun 21 2014
  CAS-BOT-BC214584  Erigeron philadelphicus L. R. Abrams 1916-7-11 6051 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  UC169037  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1912-7-4 3725 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA44298  Eriodictyon californicum H. M. Pollard 1945-9-1 s.n. Humboldt Road to Redcap Creek. Comment
  CDA18250  Eriogonum latifolium G. D. Barbe, T. C. Fuller 1974-6-19 1876 Humboldt North Coast Ranges; Mad River mouth, beach S of river, at end of Iversen Lane, Tyee City. 7 Comment
  HSC39955  Eriogonum latifolium Linda M. Barker 1976-6-22 1615 Humboldt 3 mi. W of Arcata Comment
  LA206936  Eriogonum latifolium Carl Epling; Mrs. Epling 1935-8-15 sn Humboldt Arcata Spit Comment
  POM279950  Eriogonum latifolium Lyman Benson 1929-7-15 1811 Humboldt Clam Beach, Trinidad. Comment
  CAS-BOT-BC259183  Eriogonum latifolium W. R. Dudley 1899-6-1 s.n. Humboldt Peninsula opposite Eureka Comment
  UC176709  Eriogonum luteolum var. luteolum Joseph P. Tracy 1912-8-3 3968 Humboldt opposite Buck Mountain; Valley of Van Duzen River 762 Comment
  OBI36370  Eriogonum nudum David J. Keil 1983-7-1 17272 Humboldt Ca 13 mi W of jctn US 101 along Bull Crk Flats Rd Comment
  RSA21586  Eriogonum nudum var. nudum Carl B. Wolf 1937-8-13 9231 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC1198140  Eriogonum nudum var. nudum Joseph P. Tracy 1930-7-4 9929 Humboldt near. on raod from Bull Creek to Mattole Windy Nip Gap 762 Comment
  UC176684  Eriogonum nudum var. nudum Joseph P. Tracy 1912-7-26 3858 Humboldt hills on the Ashfield Ridge North Coast Ranges, Kneeland Prairie, Ashfield Ridge 762 Comment
  HSC32552  Eriogonum nudum var. oblongifolium Thomas W. Nelson 1973-9-2 1121 Humboldt McKeown Ranch N of Dinsmore Comment
  UC672894  Eriogonum umbellatum var. argus Joseph P. Tracy 1935-7-23 14133 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UC55392  Eriogonum umbellatum var. dumosum Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5735 Humboldt Supply Creek North Coast Ranges, Hoopa Valley, Supply Creek Comment
  HSC43084  Eriogonum umbellatum var. nelsoniorum Brad Klipfel 1973-8-3 300 Humboldt N Trinity Mtn. 1860 Comment
  HSC43081  Eriogonum umbellatum var. nelsoniorum Brad Klipfel 1973-7-31 261 Humboldt N Trinity Mtn. 1860 Comment
  HSC5592  Eriophyllum lanatum D. E. Anderson 1963-3-16 2384 Humboldt Scotia Bluffs Comment
  HSC97922  Eriophyllum lanatum var. achilleoides Cara Witte 2007-6-19 299 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1393 Comment
  UC165840  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1900-9-10 956 Humboldt near Hydesville (gravel bar of the Van Duzen River); Van Duzen River 60 Comment
  CAS-BOT-BC301182  Eriophyllum lanatum var. arachnoideum Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC31217  Eriophyllum lanatum var. grandiflorum D. E. Anderson 1972-6-20 5738 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  POM288402  Eriophyllum lanatum var. grandiflorum Lyman Benson 1929-7-14 1801 Humboldt Weott Ranger Station, South Fork Eel River. Comment
  UC165856  Eriophyllum lanatum var. lanceolatum Joseph P. Tracy 1911-7-8 3441 Humboldt about 0.5 mi above mouth Willow Creek (on s bank of river); Northern Coast Ranges, Valley of the Trinity River 152 Comment
  UC668204  Eriophyllum staechadifolium Joseph P. Tracy 1938-6-17 15958 Humboldt s of point of Cape Cape Mendocino 3 Comment
  JEPS61366  Erodium botrys Lincoln Constance 1934-5-27 701 Humboldt s end Dyerville Bridge; South Fork Eel River, Bull Creek Region Comment
  JEPS61382  Erodium cicutarium Lincoln Constance 1934-5-27 702 Humboldt s end Dyerville Bridge (South Fork Eel River); , Bull Creek Region 45 Comment
  HSC44066  Erysimum capitatum var. capitatum Thomas W. Nelson, Jane P. Nelson 1977-8-6 3697 Humboldt Rd. 2S08 between Alder Spring and Pine Mtn. 1585 Comment
  BLMAR129  Erysimum concinnum Jennifer Anthony-Wheeler 1996-4-4 129 Humboldt King range, growing on cliff faces at entrance 4mi creek & cliff faces facing ocean 12 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
  RSA0008580  Erysimum menziesii R. I. Bonn 1965-3-19 10 -a Humboldt 4 miles west of Arcata, on Lanphere Road Comment
  CAS-BOT-BC153741  Erythranthe alsinoides Doris K. Kildale 1929-4-23 7438 Humboldt Kneeland Prairie 853 Comment
  SEINET13723796 Image available Erythranthe moschata Joseph P. Tracy 1908-1 2697 Humboldt Valley of Van Duzen River; opposite Buck Mountain 762 Comment
  HSC36498  Erythronium californicum Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-14 1893 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  CAS-BOT-BC504309  Erythronium californicum Frank W. Gould 1939-5-30 826 Humboldt Top of Horse Mountain 1219 Comment
  HSC49995  Erythronium californicum M. A. Baker 1979-6-6 778 Humboldt Along road to N side of Hospital Peak Comment
  JEPS61853  Erythronium grandiflorum W. L. Jepson 1902-7-16 2039 Humboldt Trinity Summit 2133 Comment
  HSC15503  Erythronium revolutum G. N. Bos 1965-5-2 245 Humboldt 8 mi. E of Korbel on Bald Mtn. Rd. 793 Comment
  UC201282  Erythronium revolutum Joseph P. Tracy 1918-5-1 4896 Humboldt Ashfield Butte Northern Coast Ranges 762 Comment
  CAS-BOT-BC403038  Eschscholzia californica R. James; M. Goering; S. Matthews 1985-4-20 045 Humboldt Burnt Ranch Campground, Shasta-Trinity National Forest Comment
  UC1607850  Euchiton gymnocephalus Parks and Tracy 1932-7-30 1133 Humboldt Trinidad; Camp Twenty One 182 Comment
  UC552255  Euchiton gymnocephalus Joseph P. Tracy 1936-3-22 14784 Humboldt 4 mi se Korbel (near Angels Ranch); North Coast Ranges 304 Comment
  UC1540456  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  SEINET8222401  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta. 30 Comment
  UCD132296  Euchiton sphaericus John Thomas Howell 1956-8-29 12888 Humboldt Eel River 16 miles north of Garberville. Comment
  CAS-BOT-BC310680  Euthamia occidentalis Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  RSA44303  Euthamia occidentalis H. M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  UCD65901  Festuca californica subsp. californica Joseph P. Tracy 1938-6-13 15903 Humboldt Horse Mountain. 1432 Comment
  CAS-BOT-BC282500  Festuca elmeri Doris K. Kildale 1928-6-24 5286 Humboldt Horse Mountain 914 Comment
  CAS-BOT-BC278421  Festuca idahoensis Joseph P. Tracy 1930-7-10 8867 Humboldt Northern Coast Ranges. Brannan Mountain 1219 Comment
  UC1103726  Festuca idahoensis Joseph P. Tracy 1941-6-15 16909 Humboldt Wilder Ridge 609 Comment
  BLMAR39  Festuca perennis Brad Barr 39 Humboldt King range, hidden valley enclosure Comment
  SEINET200833  Festuca roemeri Joseph P. Tracy 1912-7-26 3868 Humboldt Kneeland Prairie 762 Comment
  BLMAR400  Festuca rubra Jennifer Anthony-Wheeler 2005-6-29 400 Humboldt South Spit, salt marsh variant 6 Comment
  POM313227  Festuca rubra Malcolm A. Nobs, S. Galen Smith 1949-8-3 1171 Humboldt Around Field's Landing. Comment
  SACT001197  Festuca rubra Malcolm Nobs, S. Smith 1949-8-3 Humboldt Salt marshes. Comment
  UC176573  Festuca rubra Joseph P. Tracy 1912-7-7 3740 Humboldt Eureka North Coast Region 0 Comment
  HSC21492  Foeniculum vulgare Wm. F. Bowman 1968-11-9 Humboldt Along E edge of Humboldt Bay, along elevated area near railroad tracks. Comment
  RSA183617  Fragaria californica D. E. Anderson 1965-5-1 3558 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek. Comment
  HSC12453  Fragaria chiloensis Wendell Wood 1970-9-9 283 Humboldt Gold Bluffs Beach near Fern Canyon 0 Comment
  HSC18611  Fragaria vesca J. C. Reppas 1963-4-11 37 Humboldt 820 Fickle Hill Rd. Comment
  UC1198723  Fragaria vesca Joseph P. Tracy 1935-7-25 14237 Humboldt McKay Prairie; Trinity Summit 1584 Comment
  HSC45262  Fragaria virginiana M. Alcasas 1978-6-3 120 Humboldt Titlow Hill Rd. 0.8 mi. from Hwy. 299 1113 Comment
  HSC18394  Frangula californica P. W. Shields May 1955 Humboldt 2 mi N of Willow Creek Comment
  CAS-BOT-BC52729  Frangula californica subsp. californica C. D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC12313  Frangula purshiana Wendell Wood 1970-9-22 296 Humboldt McKinleyville, E end of Chateau Way 107 Comment
  HSC18419  Frangula purshiana T. M. Mingo May 1965 Humboldt 2 mi N of Trinidad Comment
  SEINET200390  Frasera speciosa Joseph P. Tracy 10731 Humboldt Trinity Summit , Open places at Corral Prairie. 1585 Comment
  CAS-BOT-BC217698  Fraxinus latifolia Doris K. Kildale 1927-5-13 3142 Humboldt Redwood Creek at Berry's 289 Comment
  UC1197624  Fritillaria affinis Joseph P. Tracy 1937-6-12 8151 Humboldt Horse Mountain 1371 Comment
  HSC82043  Fritillaria affinis Thomas W. Nelson, James Nelson 1980-6-10 5439 Humboldt Along branch rd. off Swayback Ridge 4-wheel drive rd. 200 yds from junction 1433 Comment
  UC1005680  Fritillaria affinis Frank W. Gould 1939-5-30 830 Humboldt Horse Mountain, about half-way up mountain road Horse Mountain 1000 Comment
  UC2029548  Fumaria capreolata Richard R. Halse 2013-3-28 8767 Humboldt Eureka, weed area by a Texaco station near 3543 Broadway St. (U.S. Highway 101) and its intersection with McCullens Ave. Comment
  CDA3559  Fumaria capreolata Gordon Leppig, Sylvia Leppig 2000-12-7 1523 Humboldt 7th and I Street just west of Post Office, Arcata. Comment
  UC1222495  Galium aparine Joseph P. Tracy 1950-6-25 18891 Humboldt Burr Valley Comment
  UC416655  Galium aparine Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5403 Humboldt Hubbard's Station North Coast Ranges Comment
  HSC19781  Galium aparine B. D. Rogers, William J. Ferlatte 1966-6-8 2087 Humboldt Forest Glen Campground Comment
  HSC71493  Galium bolanderi M. A. Baker 1980-6-7 1797 Humboldt Near Brush Mtn. 1128 Comment
  JEPS25687  Galium bolanderi P. C. Hutchison 1961-5-22 2010 Humboldt 1.1 mi s Berry Summit (at 2871 ft alt. on hiway US 299) (on road to Horse Mountain, in slide) 914 Comment
  JEPS52856  Galium californicum subsp. californicum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3862 Humboldt 4.2 mi n Redway (along US 101, w-facing slope above river); Eel River 91 Comment
  HSC103090  Galium grayanum var. nanum Sydney Carothers 2014-7-3 16 Humboldt Six Rivers National Forest, Lassics Botanical Area, Mt. Lassic, upper north slope 1775 Comment
  UC416658  Galium muricatum Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5471 Humboldt near Elk Prairie (Fruitland); North Coast Ranges Comment
  JEPS52749  Galium porrigens var. porrigens L. T. Dempster and G. L. Stebbins 1963-7-10 3856 Humboldt 6.8 mi w mouth of Bull Creek; Bull Creek (settlement) 91 Comment
  JEPS52974  Galium porrigens var. porrigens Lauramay T. Dempster and Jean Colton 1963-8-7 3888 Humboldt e Shelter Cove Comment
  UC169022  Galium trifidum Joseph P. Tracy 1906-8-18 2542 Humboldt Eureka Northern Coast Region 0 Comment
  HSC26353  Gamochaeta ustulata T. O. Osborne 1970-9-16 54 Humboldt Trinidad Bay, Prisoner Rock Comment
  CAS-BOT-BC303394  Gamochaeta ustulata John Thomas Howell 1936-8-29 12885 Humboldt Eel River 16 miles N of Garberville Comment
  UC166543  Gamochaeta ustulata Joseph P. Tracy 1911-7-9 3462 Humboldt near mouth of Willow Creek; North Coast Ranges, Valley of Trinity River, Willow Creek 152 Comment
  HSC8389  Garrya elliptica Francis Winter 1960-2-28 Humboldt Samoa Peninsula 6 mi. W of Arcata, Ca Comment
  CAS-BOT-BC182171  Garrya fremontii Doris K. Kildale 2957 Humboldt McDowell Buttes near Kneeland 914 Comment
  UC314602  Garrya fremontii Joseph P. Tracy 1925-9-6 7260 Humboldt near Don Juan Point (Trinity River); Northern Coast Ranges 304 Comment
  UC668300  Garrya fremontii Joseph P. Tracy 1935-7-14 14062 Humboldt Horse Mountain 1432 Comment
  UCD121162  Garrya fremontii Joseph P. Tracy 1939-1-14 16184 a Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UCSB72514  Garrya fremontii Moseley, Maynard 1952-8-21 Humboldt Along western valley wall of Willow Creek, mostly within Hoppe Indian Reservation, upstream from Willow Village Comment
  CAS-BOT-BC58912  Gaultheria shallon Mrs. H. C. Cantelow 1936-5-18 1291 Humboldt 8 mi. n. of Orick Comment
  HSC22506  Gaultheria shallon R. E. Hafenfeld 1965-5-9 4 Humboldt Jct. of County Rd. and Gold Bluff Beach Rd. Comment
  HSC7807  Gaultheria shallon D. E. Anderson 1961-8-27 1758 Humboldt 8 mi. W of Redwood Creek Br. along Hwy. 299 Comment
  RSA18144  Gaultheria shallon C. B. Wolf 1927-8-22 804 Humboldt 1 mile south of Orick. Comment
  UC1541490  Gaultheria shallon W. K. Parks 1932-6-1 1404 Humboldt vicinity of Trinidad Comment
  UC1585409  Gaultheria shallon R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 32 Humboldt w of Hoopa (just e of Pine Ridge Summit, Bair Road); Bair Road 970 Comment
  UC412682  Gaultheria shallon Mrs. M. H. Manning Oct. 1901 Humboldt near Hupa Comment
  HSC98954  Gayophytum diffusum subsp. parviflorum Cara Witte 2008-7-28 947 Humboldt Buck Flat. Near intersection of National Forest 1 and Forest Service Road 5N01. 1591 Comment
  UC202459  Gayophytum heterozygum Joseph P. Tracy 1919-9-18 5248 Humboldt Trinity Summit Northern Coast Ranges 1524 Comment
  HSC28184  Genista monspessulana Richard Curtis 1973-9-27 20 Humboldt Bayside cutoff between Eureka and Arcata. Comment
  UC562302  Gentiana sceptrum Joseph P. Tracy 1927-8-22 8338 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  UCR80278  Gentiana sceptrum R. S. Woglum 1938-8-29 2038 Humboldt North Coast, grounds of Trinidad State Park, south of Trinidad 38 Comment
  HSC24639  Gentiana sceptrum Doris K. Kildale 1925-7-26 1065 Humboldt Christmas Prairie Comment
  JEPS61428  Geranium dissectum Lincoln Constance 1934-6-7 833 Humboldt Johnson Prairie South Fork Eel River, Bull Creek Region Comment
  HSC90263  Geranium dissectum Jean Hanson 1980-5-24 67 Humboldt Indian (Gunther) Island in Humboldt Bay, city of Eureka, W end of island, S of dike Comment
  HSC89415  Geranium molle P. A. Daly 1986-3-12 103 Humboldt Trinidad Head 61 Comment
  RSA600894  Geranium molle Louis C. Wheeler 1959-8-2 7622 Humboldt Shelter Cove. Comment
  HSC16968  Gilia capitata H. D. Sumner 1959-7-14 Humboldt Between Hoopa and Redwood Creek 305 Comment
  HSC73711  Gilia capitata M. A. Baker 1980-7-15 2977 Humboldt Near Whiting Ridge. 1341 Comment
  HSC16985  Gilia millefoliata R. T. Forester 1963-5-6 49 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  HSC16988  Gilia millefoliata L. H. Myers 1963-5-13 14 Humboldt W of Lanpheres Rd., Mad River slough area Comment
  UC908974  Gilia millefoliata Joseph P. Tracy 1936-5-30 14833 Humboldt near Samoa (sand dunes, on Humboldt Bay); Northern Coast Region, on Humboldt Bay, nr Samoa 6 Comment
  HSC73141  Githopsis specularioides M. A. Baker 1980-5-18 1333 Humboldt Near Black Mtn. 792 Comment
  HSC103275  Githopsis specularioides John McRae 2014-5-23 Humboldt Six Rivers National Forest, Hennessy Peak Quad, Forest Service Road 6N20 to Oak Knob. 829 Comment
  HSC37857  Glaux maritima Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  SEINET12118385  Glehnia leiocarpa L. R. Abrams 1916-1 6140 Humboldt at Trinidad Comment
  CAS-BOT-BC218430  Glehnia littoralis subsp. leiocarpa W. R. Dudley 1899-6-1 s.n. Humboldt Penninsula of Humboldt Bay Comment
  JEPS158  Glehnia littoralis subsp. leiocarpa unknown 1925-7-29 109 Humboldt Samoa Comment
  POM318534  Glehnia littoralis subsp. leiocarpa Patricia Wilder 1968-8-22 4418 Humboldt County campground on beach west of Ferndale off Centerville Road. 8 Comment
  RSA246749  Glehnia littoralis subsp. leiocarpa R. F. Thorne, P. Everett 1965-8-9 35304 Humboldt Big Lagoon 3 Comment
  UCR196165  Glyceria declinata R. F. Thorne, Percy C. Everett 1965-8-9 35331 Humboldt Northwestern; Outer North Coastal region, Clam Beach County Park, along highway 3 Comment
  HSC10063  Glyceria elata D. E. Anderson 1965-9-5 4092 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  SEINET201843 Image available Glyceria elata H. K. Sharsmith, F Chisaki 1959-8-22 4756 Humboldt Happy Camp just over Trinity County line 914 Comment
  UC187282  Glyceria elata Joseph P. Tracy 1911-7-7 3372 Humboldt 3 mi nw Willow Creek junction with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UCD66780  Glyceria occidentalis August L. Hormay 1932-5-11 Humboldt Eureka, Arcata Swamp. Comment
  SEINET7292867 Image available Glyceria occidentalis Joseph P. Tracy 1942-1 17090 Humboldt Loleta Comment
  HSC63144  Glyceria striata M. A. Baker 1979-6-29 966 Humboldt Comment
  RSA42036  Gnaphalium chilense H. C. Cantelow 1936-8-29 1566 Humboldt 1 mile off Riv. [High.?] S. Fork Eel River Bridge, 17 miles N of Garberville Comment
  CAS-BOT-BC302536  Gnaphalium palustre Henry M. Pollard 1956-10-9 s.n. Humboldt Near Fig Tree Riffle at Woodson Mine, Klamath River, Orleans Comment
  HSC67008  Gnaphalium palustre J. P. Smith 1971-10-9 5037 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC164801  Gnaphalium palustre J. P. Tracy 1900-8-5 918 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC302534  Gnaphalium palustre Doris K. Kildale 1925-6-30 846 Humboldt Buhne's [Buhne] Point Comment
  POM261473  Gnaphalium sphaericum Joseph P. Tracy 1940-8-11 16694 Humboldt Trinity River Valley near Raccoon Creek. 152 Comment
  RSA167297  Gnaphalium thermale Joseph P. Tracy 1950-9-22 19376 Humboldt Klamath River near Slate Creek; below Orleans 8 miles. 122 Comment
  HSC34504  Goodyera oblongifolia J. D. Ackerman 1975-5-3 441 Humboldt Hwy. 299, 200 yds. E of Lord Ellis Summit Comment
  HSC99692  Goodyera oblongifolia T. Jimerson, J. Pageau 1979-6-12 535 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  UC1196434  Goodyera oblongifolia Joseph P. Tracy 1949-8-7 18447 Humboldt near Box Camp (Trinity Summit); Trinity Summit 1524 Comment
  UC14959  Goodyera oblongifolia Ethel Tracy 1900-7-26 908 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  UC179961  Goodyera oblongifolia Joseph P. Tracy 1914-9-6 4624 Humboldt between High Prairie and Snow Camp (Northern Coast Ranges, Bald Mountain); Northern Coast Ranges, Bald Mountain 1219 Comment
  JEPS25052  Gratiola neglecta Joseph P. Tracy 1920-8-15 5378 Humboldt Klamath River Bluff Creek; Northern Coast Ranges, Klamath River at Bluff Creek 152 Comment
  CAS-BOT-BC304746  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  HSC91913  Grindelia hirsutula E. Mackey 1986-12-18 Humboldt Patricks Point State Park; parking lot at Palmer's Point Comment
  RSA125369  Grindelia hirsutula Peter H. Raven, Richard Snow 1958-7-21 13659 Humboldt Cape Mendocino Comment
  UC581777  Grindelia hirsutula Joseph P. Tracy 1930-7-5 8831 Humboldt sw slopes fronting the ocean 3 mi s of point of Cape Mendocino Cape Mendocino (on hillsides up to 500 ft elevation) 30 Comment
  UC897043  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt salt marsh bordering Humboldt Bay at Arcata; Humboldt Bay Comment
  POM160899  Grindelia hirsutula var. davyi Joseph P. Tracy 1918-7-7 5038 Humboldt Near Garberville. 122 Comment
  BLMAR308  Grindelia stricta Jennifer Anthony-Wheeler 2002-7-1 308 Humboldt South Spit 6 Comment
  SEINET11843448  Grindelia stricta subsp. venulosa F. H. Utech 1986-1 86 -410 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  OBI37801  Grindelia stricta var. platyphylla David J. Keil 1983-7-1 17281 Humboldt Ca. 7 mi W of Honeydew along Mattole rd Comment
  OBI16402  Grindelia stricta var. stricta Carl B. Wolf 1937-9-12 9333 Humboldt Humboldt bay, 1 mi S of Arcata on road to Eureka 3 Comment
  HSC97993  Hackelia bella Cara Witte 2007-7-9 461 Humboldt Along Forest Service Road 4N32. 1/4 mile west of intersection with 5N04 1508 Comment
  HSC99536  Hackelia californica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 201 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1738 Comment
  UC1222252  Hackelia californica Joseph P. Tracy 1948-8-15 18154 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity nSummit 1524 Comment
  UC205152  Hazardia whitneyi var. discoidea Joseph P. Tracy 1919-9-23 5287 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC630633  Hedera helix Joseph P. Tracy 1939-1-22 16185 Humboldt on Van Duzen R. Blue Slide 91 Comment
  RSA44540  Helenium autumnale H. M. Pollard 1947-8-18 s.n. Humboldt Klamath river bar, near Orleans. Comment
  SD128471  Helenium bigelovii L. E. Urbatsch, Patricia B. Cox and Alan W. Lievens 1988-8-17 6103 Humboldt Road to Denny from California 299; 1.7 miles to left fork; 6.7 miles to right fork, 7NO4; collection site 6.4 miles. Comment
  CAS-BOT-BC306863  Helenium bolanderi Doris K. Kildale 1927-6-26 3592 Humboldt Patrick's Point Comment
  UC166088  Helenium puberulum Joseph P. Tracy 1911-8-27 3534 Humboldt Ryan's Slough Northern Coast Region, Region about Humboldt Bay 0 Comment
  HSC98351  Helminthotheca echioides J. P. Smith 1976-11-21 9001 Humboldt Arcata, at the foot of I St. Comment
  CAS-BOT-BC310073  Hemizonella minima R. K. Gierisch; D. H. Esplin 1969-7-1 3535 Humboldt Six Rivers National Forest. Grouse Mtn. Comment
  UC1199367  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1930-6-15 8767 1/2 Humboldt Dobby Creek 152 Comment
  HSC5819  Hemizonia congesta subsp. tracyi H. E. Parks May 1934 5076 Humboldt Bridgeville 152 Comment
  LA203693  Hemizonia congesta subsp. tracyi S. K. Harris; 1936-6-20 sn Humboldt above Van Duzen River about 1 mi. W of Bridgeville Comment
  SBBG8413  Hemizonia congesta subsp. tracyi H. and M. Dearing 1939-5-24 3426 Humboldt near Capetown Comment
  RSA246845  Heracleum maximum R. F. Thorne, P. Everett 1965-8-9 35327 Humboldt Clam Beach County Park: along highway. 3 Comment
  CAS-BOT-BC388492  Herniaria hirsuta var. cinerea Henry M. Pollard 1946-8-13 s.n. Humboldt Klamath River, near Orleans Comment
  UC1199419 Image available Hesperevax sparsiflora var. brevifolia Joseph P. Tracy 1932-5-16 10107 Humboldt near Samoa; Humboldt Bay 6 Comment
  HSC45914  Hesperocyparis macrocarpa Jerome Peterson 1978-4-16 3 Humboldt HSU Campus 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
  BLMAR42  Heuchera 42 Humboldt King range, Bear Creek, tolkan campsite Comment
  HSC73174  Heuchera micrantha M. A. Baker 1980-5-17 1247 Humboldt Near Le Perron Peak 1066 Comment
  HSC79434  Heuchera micrantha Kenneth Clark 1981-4-5 1228 Humboldt Above S fork Dead Man's Gulch 114 Comment
  SEINET200860  Heuchera micrantha J. P. Tracy 2865 Humboldt Valley of Van Duzen River opposite Buck Mt 762 Comment
  UC1222389  Heuchera micrantha Joseph P. Tracy 1950-6-8 18718 Humboldt 2 mi s Ferndale (near the Sand Cut, Wild Cat Road) 304 Comment
  CAS-BOT-BC424198  Heuchera micrantha var. hartwegii Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  SBBG8341  Hieracium albiflorum H. and M. Dearing 1939-5-24 3414 Humboldt Redwood Hwy, S of Dyerville Comment
  UC127713  Hieracium albiflorum Harley P. Chandler 1901-6-1 1329 Humboldt Hupa Indian Reservation North Coast Ranges, , Hoopa Indian Re 152 Comment
  POM289677  Hieracium albiflorum Lyman Benson 1928-7-12 485 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  HSC58196  Hieracium greenei G. L. Clifton, Griswold 1979-8-2 12295 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC66826  Hieracium greenei Gail Newton 1980-7-15 1579 Humboldt Near Sims Mtn. 1311 Comment
  CDA38204  Hippuris vulgaris E. C. Whitney 1962-7-23 s.n. Humboldt Pepperwood; R. Wallen property. 0 Comment
  HSC33769  Holcus lanatus Lon Hall 1975-5-24 378 Humboldt Samoa Dunes, off Samoa Blvd., across from the boat landing Comment
  HSC71745  Holcus lanatus M. A. Baker 1980-6-26 2429 Humboldt Near Sims Creek 610 Comment
  SD51261  Holcus lanatus D. F. Howe 1961-8-1 Humboldt 9 miles north of Arcata on #101 Comment
  SEINET8718745 Image available Holcus lanatus H. E. Parks, S. T. Parks 1943-1 24260 Humboldt Spruce Cove, Trinidad 61 Comment
  BLMAR753  Holodiscus discolor Jennifer Wheeler 2015-8-6 753 Humboldt King range, Strawberry Rock 189 Comment
  CAS-BOT-BC149902  Holodiscus discolor Doris K. Kildale 1927-7-17 3755 Humboldt Bug Creek 792 Comment
  HSC45632  Holodiscus discolor Diane L. Reed 1978-4-22 10 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC58138  Holodiscus discolor Gilbert Muth 1979-8-1 12156 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC70991  Holodiscus discolor Gail Newton 1980-7-15 1576 Humboldt Near Sims Mtn. 1311 Comment
  SDSU9079  Holodiscus discolor D. F. Howe 1961-8-1 3115 Humboldt 3.3 miles north of Trinidad on #101. Comment
  HSC74183  Hordeum brachyantherum M. A. Baker 1980-7-22 3108 Humboldt Near Grogan Hole. 1676 Comment
  UC1103739  Hordeum marinum subsp. gussoneanum Joseph P. Tracy 1939-4-29 16262 Humboldt Orleans 121 Comment
  CAS-BOT-BC536630  Horkelia californica Joseph P. Tracy 1937-8-22 15672 Humboldt Foot of low hills south of Fields Landing 6 Comment
  CHSC97957  Horkelia tridentata subsp. flavescens April A. Allard; Gregory D. O'Connell 2005-6-24 16 Humboldt Roadside meadow. 1648 Comment
  UC1198720  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1912-7-31 3935 Humboldt near summit (Buck Mountain); Northern Coast Ranges 1676 Comment
  CAS-BOT-BC206123  Hosackia crassifolia Clarence R. Quick 1959-7-24 59 -37 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  HSC32886  Hydrophyllum occidentale Thomas W. Nelson 1973-5-30 971 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  HSC40551  Hydrophyllum occidentale Thomas W. Nelson, Jane P. Nelson 1976-5-23 2522 Humboldt SW facing slopes 1666 Comment
  SEINET12279830  Hydrophyllum occidentale H. P. Chandler 1901-1 1263 Humboldt Redwood Belt 457 Comment
  HSC13541  Hydrophyllum tenuipes H. E. Parks, J. P. Tracy 1930-5-25 863 Humboldt Van Duzen River 305 Comment
  UC183760  Hypericum formosum var. scouleri Joseph P. Tracy 1913-7 4362 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  UC35071  Hypericum formosum var. scouleri Chesnut and Drew 1888-7-30 Humboldt Grouse Creek Comment
  UC1004334  Hypericum perforatum W. L. Colwell 1954-11-20 19 Humboldt along Eel R. 3 mi. e. of S. Fork; Quadrangle 29B4, Eel R. 91 Comment
  HSC23147  Hypericum perforatum Thomas W. Nelson 1970-10-18 251 Humboldt Beside Hwy. 101, 100 yds. N of bridge over Mad River Comment
  UC1069673  Hypochaeris radicata H. L. Person 1932-7-16 L.H. 25 Humboldt Highway n Trinidad; Rock Point Quad. Comment
  CAS-BOT-BC206843  Iliamna latibracteata Joseph P. Tracy 1939-7-23 16350 Humboldt Willow Creek Canyon, along Trinity Highway 762 Comment
  HSC35755  Iliamna latibracteata Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 1999 Humboldt Bald Hills Rd., just W of French Camp. Comment
  UC902184 Image available Iliamna latibracteata Joseph P. Tracy 1948-8-15 18151 Humboldt near Elk Camp, on Ridge 2 miles east of Grove's Prairie; Trinity Summit. 1493 Comment
Read comments
Feb 27 2012
  CHSC24762  Iris G. Strang 1976-4-10 19 Humboldt N side of Highway 36 in Bridgeville. 1219 Comment
  HSC13857  Iris douglasiana Elrid H. Spinas 1948-6-16 59 Humboldt Horse Mtn. Comment
  UC275573  Iris douglasiana Joseph P. Tracy 1924-5-25 6683 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  UC4280  Iris douglasiana Harley P. Chandler May 1901 1262 Humboldt Redwood Belt; North Coast Ranges 457 Comment
  UC667107  Iris macrosiphon Joseph P. Tracy 1932-7-17 10662 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  RSA21085  Iris macrosiphon Carl B. Wolf 1937-6-19 8913 Humboldt North Coast Range, 7.2 mi. above Bridgeville on grade to Dinsmores. 457 Comment
  RSA24204  Iris macrosiphon Carl B. Wolf 1941-3-3 9993 Humboldt N. Coast Range, 1/2 miles N of Ettersburg on road to Honeydew. 305 Comment
  HSC36495  Iris purdyi Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-14 1896 Humboldt Beside branch off FS Rd. 2S08 to Pine Mtn. Comment
  CAS-BOT-BC506663  Iris tenax subsp. klamathensis Dana York; Kim Hayler 2012-5-18 3105 A Humboldt Six Rivers National Forest, near Somes Bar, 585 m SE of the confluence of the Klamath and Salmon rivers, E and above highway 96 215 Comment
  HSC45311  Iris tenax subsp. klamathensis R. York 1978-5-11 165 Humboldt Along logging road above Orleans 640 Comment
  RSA0000278  Iris tenax subsp. klamathensis Lee W. Lenz 1953-5-13 18296 Humboldt Wooded hillsides along Klamath River, Orleans. 122 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
  HSC70763  Iris tenuissima R. York 1980-5-17 538 Humboldt Near Le Perron Peak 1066 Comment
  SEINET3875940  Iris tenuissima Thomas Nelson, James Nelson 1973-5-28 935 Humboldt Mckeown Ranch north of Dinsmore.; 0 Comment
  HSC44786  Iris tenuissima Maralyn O'Meara 1972-6-8 96 Humboldt Along Bald Hills Rd., 8 mi. E of junction with Hwy. 101 Comment
  HSC95675  Iris tenuissima subsp. tenuissima Steven Lee 2004-4-25 26 Humboldt Along river access trail off County Rd. 341 Comment
  HSC75280  Isoetes bolanderi J. O. Sawyer, D. A. Thornburgh 1980-9-9 4075 Humboldt Mill Creek Lake and surrounding meadows Comment
  RSA152291  Isoetes howellii Joseph P. Tracy 1937-8-12 15650 Humboldt Snow Camp. 1402 Comment
  JEPS101847  Isolepis cernua Dean W. Taylor 1991-9-15 12285 Humboldt Big Lagoon, along Highway 101 near the mouth of Tom Creek. 3 Comment
  HSC98028  Isolepis setacea Cara Witte 2007-7-11 494 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  BLMAR430  Jaumea carnosa Clara Sander 2004-8-30 430 Humboldt South Spit, 1.6km north on the south spit 3 Comment
  POM187933  Jaumea carnosa Marcus E. Jones 1931-7-16 29118 Humboldt Arcata. Comment
  HSC102931  Juncus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 934 Humboldt Patterson Meadows 1555 Comment
  CHSC105149  Juncus bolanderi Peter F. Zika 2008-10-19 24230 Humboldt E side of Route 101, near Exit 728 for Trinidad Beach (North Coast NCo) 110 Comment
  HSC13998  Juncus bufonius C. B. Wolf 1927-8-22 780 Humboldt Big Lagoon Comment
  RSA168858  Juncus bufonius Joseph P. Tracy 1927-6-19 8197 Humboldt Big Lagoon. Comment
  HSC13995  Juncus bufonius D. E. Anderson 1961-9-9 1786 Humboldt Along Hwy. 101 Comment
  SEINET7421723 Image available Juncus bufonius H. E. Parks, S. T. Parks 1943-1 24254 Humboldt Spruce Cove, Trinidad 61 Comment
  CHSC105147  Juncus covillei Peter F. Zika 2008-10-19 24231 Humboldt Uncommon in damp ditches, full sun, E side of Route 101, near Exit 728 for Trinidad Beach 110 Comment
  UC1152107  Juncus covillei Joseph P. Tracy 1937-8-12 15644 Humboldt Snow Camp Meadow Comment
  POM170510  Juncus effusus subsp. pacificus Le Roy Abrams 1916-7-18 6102 Humboldt Arcata to Trinidad. Comment
  RSA15622  Juncus effusus subsp. pacificus Carl B. Wolf 1927-8-30 1260 Humboldt 3 miles S of Thorn Comment
  UC419019  Juncus ensifolius H. E. Parks, J. P. Tracy 1924-8-3 2400 Humboldt Big Lagoon Comment
  UC1152100  Juncus ensifolius Joseph P. Tracy 1927-8-22 8343 Humboldt Lake Prairie Bald Mountain 1066 Comment
  UC167841  Juncus falcatus subsp. sitchensis Schmidt Humboldt Humboldt Bay Comment
  UC1152103  Juncus laccatus Joseph P. Tracy 1930-7-23 9135 Humboldt Cold Springs Horse Springs Comment
  HSC102628  Juncus orthophyllus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1613 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC14075  Juncus oxymeris D. E. Anderson 1965-9-5 4089 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  UC419021  Juncus phaeocephalus H. E. Parks and J. P. Tracy 1924-8-3 Humboldt Big Lagoon Comment
  SEINET10796051 Image available Juncus tenuis Unknown 1883-1 Rattan s.n. Humboldt Comment
  HSC58135  Juniperus communis var. saxatilis Gilbert Muth 1979-8-1 12143 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC82168  Kalmia polifolia D. K. Imper 1985-6-13 Humboldt Edge of Waterdog Lake 1768 Comment
  POM160888  Keckiella corymbosa Joseph P. Tracy 1920-8-15 5360 Humboldt Klamath River at Bluff Creek. 152 Comment
  CAS-BOT-BC499191  Kopsiopsis strobilacea C. Young 1967-5-15 s.n. Humboldt Orleans Comment
  SEINET11811122  Lactuca ludoviciana J. P. Tracy 1950-1 19368 Humboldt Klamath River, near Slate Creek below Orleans 8 mi 122 Comment
  JEPS9905  Lasthenia californica subsp. californica Lincoln Constance 1934-5-23 616 Humboldt sw slope in upper end Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC166223  Lasthenia californica subsp. californica J. P. Tracy 1905-4-30 2177 Humboldt Ocean beach Opp. Eureka Comment
  SDSU4464  Lathyrus latifolius D. F. Howe 1959-8-4 2807 Humboldt Roadside 9 miles east of Arcata on #299. Comment
  UC162839  Lathyrus littoralis Joseph P. Tracy 1906-5-13 2451 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  UC198655  Lathyrus littoralis Joseph P. Tracy 1917-5-30 4802 Humboldt Little River Beach Northern Coast Region 6 Comment
  HSC97937  Lathyrus nevadensis subsp. nevadensis Cara Witte 2007-5-31 148 Humboldt Along National Forest 1. Approximately 1 mile south of 4E27. 1489 Comment
  UC495706  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1932-7-16 10641 Humboldt McKay Prairie Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC205041  Lathyrus palustris Joseph P. Tracy 1907-7-20 2593 Humboldt Near Samoa. Region about Humboldt Bay 152 Comment
  UC709414  Lathyrus palustris Joseph P. Tracy 1940-9-26 16727 Humboldt Eureka Comment
  BLMAR279  Lathyrus polyphyllus Jennifer Anthony-Wheeler 1999-5-28 279 Humboldt King range, growing alongside prosper ridgee rd on strawberry rock allot 304 Comment
  UCR84790  Lathyrus tingitanus Kathy Harper 1992-5-14 s.n. Humboldt Coast Range, Van Duzen River, c. 1.5 mi. west of Bridgeville on State Hwy 36 195 Comment
  UC1199063  Lathyrus torreyi Joseph P. Tracy 1911-7-7 3434 Humboldt between Willow Creek Campbell Creek (viz ridge n of Willow Creek); Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC1199067  Lathyrus vestitus Joseph P. Tracy 1937-6-20 15359 Humboldt s of Ferndale; Wild Cat Ridge 304 Comment
  UC162788  Lathyrus vestitus Joseph P. Tracy 1906-6-24 2498 Humboldt near Field's Landing (s slope of Humboldt Hill); Northern Coast Region, Humboldt Bay Region, Humboldt Hill 0 Comment
  UC1222398  Lathyrus vestitus Joseph P. Tracy 1949-7-4 18327 Humboldt 2 mi e Kneeland (on the Butter Valley Road) 609 Comment
  HSC2129  Lathyrus vestitus subsp. bolanderi Frances Oldridge 1946-1 Humboldt Willow Creek Comment
  HSC103352  Lathyrus vestitus var. ochropetalus Thomas W. Nelson, Jane Nelson 1983-6-12 7407 Humboldt Along Kneeland Rd., ~ .5 mi. SE of junction with Maple Creek Rd. 671 Comment
  CDA24488  Laurus nobilis Gordon Leppig 2000-4-12 1289 Humboldt Arcata, 13th and Union. Comment
  CAS-BOT-BC325927  Layia carnosa W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  CAS-BOT-BC325995  Layia carnosa David D. Keck; J. Clausen 1935-6-16 3381 Humboldt Mouth of Little River. Comment
  HSC34455  Layia carnosa J. P. Smith, J. O. Sawyer 1975-5-11 8078 Humboldt Samoa Peninsula, just N of Coast Guard Station boundary. Comment
  JEPS13463  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt sand dunes of coean beach at mouth Little River; Northern Coast Region Comment
  BLMAR61  Layia carnosa Jennifer Anthony-Wheeler 1994-3-31 61 Humboldt King range, Matole beach South of campground 12 Comment
  UC275300  Ledum glandulosum R. M. Holman 1925-7-23 Humboldt Big Lagoon Comment
  UC314632  Ledum glandulosum Joseph P. Tracy 1924-7-13 6728 Humboldt Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  HSC64787  Lepidium densiflorum J. P. Smith, Steve Selva 1970-6-14 3843 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CAS-BOT-BC12986  Lepidium virginicum Henry M. Pollard 1946-8-10 s.n. Humboldt South of Klamath River and east of Perch Creek. Orleans Region. Comment
  SEINET7967470 Image available Leptosiphon bicolor Gail Newton 1980-6-28 746 Humboldt Near Mad River Butte 369 Comment
  UCD118969  Leptosiphon nuttallii P. B. Kennedy 1923-8-3 s.n. Humboldt 7 miles from Bluff Creek. Klamath River to Eureka. Comment
  CAS-BOT-BC341826  Lessingia nemaclada Alice Eastwood 1921-7-21 10674 Humboldt Vanduzen [Van Duzen] River Comment
  CAS-BOT-BC334616  Leucanthemum vulgare Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC67896  Leucanthemum vulgare J. P. Smith 1973-5-26 6806 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC101968  Lewisia nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 864 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC283515  Leymus X vancouverensis Malcom A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, ca 2 miles N of Eureka Comment
  UC573707  Leymus mollis subsp. mollis H. S. Yates 1936-6-18 5727 Humboldt near mouth of Little River; Eureka Quadrangle 4 Comment
  UC1103208  Leymus triticoides Joseph P. Tracy 1929-7-21 8645 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC436493  Ligusticum apiifolium Joseph P. Tracy 1909-8-29 3084 Humboldt Humboldt Bay, near top of Humboldt Hill 152 Comment
  HSC74226  Ligusticum californicum M. A. Baker 1980-7-19 3021 Humboldt Near Bret Hole. 1814 Comment
  HSC74437  Ligusticum californicum Gail Newton 1980-8-10 2068 Humboldt Near Blake Mtn. 1707 Comment
  UC642267  Ligusticum californicum Joseph P. Tracy 1937-8-12 15633 Humboldt Snow Camp 1402 Comment
  HSC98621  Ligusticum californicum Cara Witte 2008-7-28 957 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1592 Comment
  HSC65837  Lilium bolanderi Gail Newton 1980-6-16 183 Humboldt Near Onion Mtn. 1280 Comment
  UCR39795  Lilium bolanderi D. K. Imper 1983-7-12 s.n. Humboldt Six Rivers National Forest. Along13N01 roadside c. 3.5 mi north of Blue Lake 915 Comment
  CAS-BOT-BC508390  Lilium columbianum V. Rattan 1879-1-1 s.n. Humboldt Klamath Comment
  UC1035026  Lilium columbianum A. M. Vollmer and L. Beane Jul 1953 121 Humboldt Comment
  JEPS109810  Lilium kelloggii Dean W. Taylor 2004-6-23 19116 Humboldt Fickle Hill Road 1.3 miles north of junction Butler Valley Road 542 Comment
  RSA256730  Lilium kelloggii A. Montalvo, J. D. Akerman 1974-8-1 399 Humboldt 1 mile west of Kneeland P.O. on Greenwood Heights Road Comment
  SEINET4063663  Lilium occidentale O. M. Clark 1932-1 Humboldt Comment
  UC666950  Lilium pardalinum Joseph P. Tracy 1938-7-4 15994 Humboldt Valley of South Yager Creek 762 Comment
  HSC58108  Lilium pardalinum subsp. pardalinum G. L. Clifton, Griswold 1979-8-1 12043 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC74323  Lilium pardalinum subsp. pardalinum Gail Newton 1980-7-20 1621 Humboldt Near Bell Swamps 1426 Comment
  CAS-BOT-BC132965  Lilium rubescens Volney Rattan 1867-6-1 s.n. Humboldt Coast Range Comment
  CHSC19733  Limnanthes douglasii D. E. Anderson 1965-5-8 3634 Humboldt About 4 miles east of Berry Summit, along Hw. 299. Roadside ditch. Comment
  CDA33609  Limnobium laevigatum David Juliano 2010-9-7 PDR# 1414284 Humboldt Loleta; Catfish Lake (a stream-fed natural pond), near Tompkins Hill Road and Hookton Road 0 Comment
  POM254102  Limonium californicum C. C. Harris, S. K. Harris 1939-9-8 973 Humboldt South shore of Humboldt Bay. Comment
  UC1198577  Linanthus acicularis Joseph P. Tracy 1921-4-24 5474 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  JEPS58168  Linanthus androsaceus Joseph P. Tracy 1940-5-17 16553 Humboldt Larrabee Valley 731 Comment
  UC146167  Linanthus androsaceus J. P. Tracy 1908-6-7 2606 Humboldt mouth of Maple Creek Mad River, Maple Creek 152 Comment
  HSC12026  Linaria vulgaris D. Santana 1970-11-2 100 Humboldt E side of old Hwy. 1 in ditch Comment
  HSC49829  Linum bienne Maralyn O'Meara 1974-7-11 531 Humboldt Kneeland, Barry Ridge Comment
  HSC59190  Linum bienne Terry Roth 1979-5-29 95 Humboldt Arcata, off of Sunset Ave. near the old mill location. Comment
  UC302158  Listera convallarioides Joseph P. Tracy 1926-6-27 7690 Humboldt Horse Mountain Northern Coast Ranges 1219 Comment
  HSC37160  Listera cordata var. nephrophylla J. D. Ackerman 1976-2-29 750 Humboldt 1 mi. E of old Hwy. 299 junction with Korbel, Simpson Demonstration Forest Comment
  UC484048  Lithocarpus densiflorus Carl B. Wolf 1930-10-29 Humboldt 4 mi s Honeydew P.O. (Old Coast Route) 304 Comment
  SEINET12034164  Lithocarpus densiflorus K. S. Erdman 1970-1 4841 Humboldt Redwood Creek,about 2-3 mi above the road end. Near mouths of McArthur and Elam Creeks,Redwood Ntl Comment
  UC400346  Lithocarpus densiflorus unknown Humboldt above Korbel Comment
  UC1196500  Lithophragma Harold E. Parks and Joseph P. Tracy 1942-5-16 11558 1/2 Humboldt vicinity Garberville 152 Comment
  CAS-BOT-BC432296  Lithophragma campanulatum Alice Eastwood; John Thomas Howell 1937-6-24 4861 Humboldt Road ro Horse Mt. Comment
  CAS-BOT-BC435646  Lithophragma heterophyllum Harold E. Parks; Joseph P. Tracy 1942-5-16 11558 Humboldt Vicinity of Garberville 152 Comment
  HSC70567  Lithophragma heterophyllum M. A. Baker 1980-7-19 3022 Humboldt Near Bret Hole. 1814 Comment
  HSC45627  Lithophragma parviflorum Diane L. Reed 1978-5-27 134 Humboldt Horse Mountain. Titlow Hill Road, 2.7 mi. from Hwy. 299 Comment
  CAS-BOT-BC342348  Logfia gallica Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  UC1103155  Lolium multiflorum Joseph P. Tracy 1927-7-16 8252 Humboldt mouth of Elk River; North Coast Ranges, mouth of Elk River 6 Comment
  HSC10302  Lolium perenne John Warner Hosking 1968-6-7 Humboldt HSC Campus, Arcata. Comment
  HSC47797  Lolium perenne Michael A. Watkins 1978-6-10 1 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  HSC72637  Lolium perenne J. P. Smith 1977-7-3 9246 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  UC50705  Lolium perenne J. Burtt Davy 1899-6-18 5518 Humboldt Pepperwood bottoms; North Coast Ranges, Pepperwood bottoms Comment
  UC249794  Lolium temulentum Joseph P. Tracy 1923-6-27 6382 Humboldt Trinity River Valley, near the South Fork; Northern Coast Ranges, Trinity River Valley, near South Fork 182 Comment
  HSC23086  Lomatium dasycarpum subsp. dasycarpum D. E. Anderson 1965-5-1 3588 Humboldt Along Hwy. 96, 3-4 mi. S of Weitchpec Comment
  HSC99106  Lomatium dasycarpum subsp. dasycarpum Cara Witte 2008-6-18 743 Humboldt Horse Mountain Botanical Area. Junction of 6N36 and 6N36A. 1375 Comment
  RSA28899  Lomatium dissectum var. dissectum Lincoln Constance, A. A. Beetle 1940-5-17 2617 Humboldt NW slope, Lower slopes of Buck Mtn, near Eureka. 793 Comment
  HSC63842  Lomatium macrocarpum M. A. Baker 1979-6-26 910 Humboldt S facing ridge Comment
  UC1197140  Lomatium utriculatum Joseph P. Tracy 1924-3-16 6626 Humboldt Northern Coast Ranges, Garberville 121 Comment
  UC1239545  Lonicera ciliosa Joseph P. Tracy 1936-8-7 15115 1/2 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC40052  Lonicera conjugialis J. O. Sawyer 1970-6-24 2274 Humboldt W of Mill Creek Lakes. 1677 Comment
  CAS-BOT-BC240470  Lonicera hispidula Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UCSB25050  Lonicera hispidula Keefe, Joseph 1967-7-8 Humboldt Bank of Ell River, Miranda turnoff, 12.4 miles north of Garberville on U.S. Highway 101 170 Comment
  RSA696526  Lonicera hispidula var. vacillans J. R. Bruff 1937-8-17 925 Humboldt Richardson Grove. Comment
  UC1052838  Lonicera hispidula var. vacillans W. L. Colwell 1955-6-7 25 Humboldt 1/2 mi n Grasshopper Mountains lookout (3 mi w of Weott); Quad. 29-B-3 914 Comment
  RSA99375  Lonicera hispidula var. vacillans F. W. Peirson 1926-7-13 7054 Humboldt Near Blue Lake, Mad River. Comment
  CAS-BOT-BC240667  Lonicera interrupta Carl D. Duncan 1920-9-20 s.n. Humboldt Hoopa Valley Comment
  HSC100411  Lonicera involucrata Carl C. Marshall Jun 1886 234 Humboldt Vicinity of Humboldt Bay. Comment
  SEINET5222458  Lonicera involucrata Unknown 2002-8-22 85 Humboldt McKinleyville, along Fischer Road just N of the Mad River Comment
  CAS-BOT-BC241494  Lonicera involucrata var. ledebourii Carl B. Wolf 1927-8-22 770 Humboldt Big Lagoon Comment
  POM284249  Lonicera involucrata var. ledebourii Lyman Benson 1928-7-10 816 Humboldt Clam Beach, Trinidad. 15 Comment
  POM46694  Lonicera involucrata var. ledebourii L. R. Abrams 1916-7-18 6129 Humboldt Arcata to Trinidad. Comment
  UC1239556  Lonicera involucrata var. ledebourii Joseph P. Tracy 1923-6-17 6269 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC200914  Lotus Milo S. Baker 1927-8-21 2468 a Humboldt Near Bald Mt. Comment
  HSC98250  Lotus aboriginus D. E. Anderson 1963-9-29 2850 Humboldt Fish Lake. Comment
  UC162847  Lotus aboriginus J. P. Tracy 1901-5-12 1078 Humboldt immediate vicinity Eureka 0 Comment
  UC179940  Lotus aboriginus Joseph P. Tracy 1914-9-6 4599 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC726016  Lotus aboriginus A. A. Heller 1937-6-8 15897 Humboldt 3 mi n Trinidad (at Bishop Pine Lodge) Comment
  CDA4163  Lotus corniculatus Gordon Leppig 1997-6-19 444 Humboldt Big Lagoon County Park, Big Lagoon Bog. Comment
  HSC26447  Lotus corniculatus Brad Klipfel 1973-4-28 16 Humboldt Along Canyon Creek, SW of Korbel Comment
  UC80965  Lotus formosissimus T. S. Brandegee Jun 1891 Humboldt Eureka Comment
  UC1197297  Lotus micranthus Joseph P. Tracy 1911-7-7 3435 Humboldt viz ridge n of Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC1947582  Lotus oblongifolius var. oblongifolius Joseph P. Tracy 1919-5-31 5176 Humboldt near, at Lack Pond Willow Creek; Northern Coast Ranges, Trinity River Valley, Lack Pond 152 Comment
  RSA406270  Lotus unifoliolatus Bonnie C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  HSC71612  Lotus unifoliolatus var. unifoliolatus J. P. Smith 1973-5-26 6835 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC38527  Lotus unifoliolatus var. unifoliolatus D. E. Anderson, J. P. Smith 1971-6-18 - 1069 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC90246  Lotus unifoliolatus var. unifoliolatus Jean Hanson 1980-6-22 107 Humboldt Indian (Gunther) Island. In Humboldt Bay, city of Eureka. W end of Island. 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
  UC495720  Lotus yollabolliensis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8945 Humboldt near Blake Lookout (along summit South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  CAS-BOT-BC201193  Lupinus L. R. Abrams 1922-6-25 8235 Humboldt 2 mi south of Fortuna Comment
  UC1223294  Lupinus adsurgens Joseph P. Tracy 1938-6-17 15970 Humboldt Bull Creek-Mattole Road top of ridge near Panther Gap; top of ridge near Panther Gap, Bull Creek-Mattole Road Comment
  SEINET12154351  Lupinus albicaulis var. shastensis J. P. Tracy 1940-1 16687 Humboldt Wilder Range Comment
  UC503003  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
  SEINET200685  Lupinus albifrons Joseph P. Tracy 1926-5-9 7458 Humboldt Valley of South Yager Creek Comment
  HSC48868  Lupinus andersonii Brad Klipfel 1973-6-10 62 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC14775  Lupinus arboreus J. W. Johnson 1961-9-3 1078 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  HSC14778  Lupinus arboreus R. A. Rasp 1964-5-17 39 Humboldt 1/2 mi. N of Fairhaven on the Samoa pennisula Comment
  HSC35758  Lupinus arboreus M. J. Athey 1970-11-12 3 Humboldt Along Hwy., 1 mi. S of Westhaven turnoff, Trinidad. Comment
  SBBG3527  Lupinus arboreus M. J. Cody 1938-7-14 Humboldt Trinidad Head Comment
  RSA407034  Lupinus arboreus var. arboreus M. B. Dunkle 1936-8-18 4809 Humboldt Fortuna. Comment
  HSC14787  Lupinus bicolor Allan R. Marshall 1962-5-13 14 Humboldt W side of Redwood Creek Bridge, along Hwy. 299 259 Comment
  SEINET6932626 Image available Lupinus bicolor Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  HSC103130  Lupinus elmeri M. Mesler 2009-7-31 814 Humboldt South Fork Mtn. FS 1, 7.7 miles north of intersection with 4N12 1767 Comment
  RSA167420  Lupinus latifolius subsp. latifolius Joseph P. Tracy 1933-8-30 13032 Humboldt Grouse Mountain, near Clear Lake. 1524 Comment
  HSC102108  Lupinus latifolius var. latifolius M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1011 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC176599  Lupinus latifolius var. latifolius Joseph P. Tracy 1913-6-20 4240 Humboldt lower foothills on its nw slope Buck Mountain; Northern Coast Ranges, lower foothills Buck Mountain 762 Comment
  UC198577  Lupinus littoralis Joseph P. Tracy 1917-5-26 4785 A Humboldt Bucksport Northern Coast Ranges, , Bucksport (Eureka) 0 Comment
  UC184850  Lupinus luteolus Joseph P. Tracy 1911-7-10 3496 Humboldt Valley of Trinity River near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River nr Willow Cre 152 Comment
  HSC36152  Lupinus lyallii var. villosus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2049 Humboldt Along Rd. 2S08 to Pine Mtn. 1524 Comment
  UC169007  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1912-7-21 3784 Humboldt Alton; Northern Coast Region 30 Comment
  UC1197251  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1907-6-25 2576 Humboldt mouth Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay region, Elk River 0 Comment
  SEINET200687  Lupinus propinquus J. P. Tracy 1901-6-16 1141 Humboldt Bluff at Bucksport, immediate vicinity of Eureka. 152 Comment
  UCD170581  Lupinus rivularis Gordon Leppig 1998-4-7 731 Humboldt Rt. 299. 396 Comment
  HSC57931  Lupinus tracyi G. L. Clifton, Griswold 1979-7-31 11567 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  HSC58602  Lupinus tracyi G. L. Clifton, Griswold 1979-7-25 10843 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC66275  Lupinus tracyi M. A. Baker 1980-7-19 2987 Humboldt Near Bret Hole 106 Comment
  HSC76441  Lupinus tracyi D. K. Imper 1981-8-12 902 Humboldt Near Tish Tang A Tang Creek. 1780 Comment
  SEINET3069359 Image available Lupinus tracyi J. P. Tracy 1932-7-15 10598 Humboldt on ridges east on Corral Prairie, Trinity Summit Comment
  HSC69870  Luzula comosa Thomas W. Nelson 1978-5-28 4090 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  HSC73153  Luzula comosa M. A. Baker 1980-5-18 1302 Humboldt Near Black Mtn. 1006 Comment
  HSC75361  Luzula comosa J. O. Sawyer, A. Erickson 1979-7-15 3416 Humboldt Adroni Research Natural Area, slopes along Aikins Creek 457 Comment
  HSC45020  Luzula comosa Sutherland 1978-3-30 1 .30378 Humboldt McKee Flat 293 Comment
  UC1152144  Luzula comosa Joseph P. Tracy 1951-6-26 19546 Humboldt Snow Camp Meadow in boggy ground Snow Camp Meadow Comment
  UC964789  Luzula comosa var. laxa Harold E. Parks and Joseph P. Tracy 1947-6-26 11643 Humboldt McKay Camp, South Fork Mt. 1676 Comment
  RSA69739  Luzula parviflora F. W. Peirson 1923-7-11 3673 Humboldt About 3 miles north of Orick. Comment
  HSC36099  Lycopodiella inundata Gerald Fijii 1972-11-4 1 Humboldt Big Lagoon Bog 6 Comment
  HSC97349  Lycopodium clavatum D. E. Anderson 1965-11-26 4176 Humboldt 2 mi. E. of Moonstone Beach Comment
  RSA210023  Lycopodium clavatum H. E. Parks, W. C. Parks 1932-7-30 1132 Humboldt Camp 21, Hammond Lumber Compant. Trinidad. Humboldt County. Altitude 500 feet. 152 Comment
  UC1745148 Image available Lycopodium clavatum Clare T. Golec 2000-7-13 Humboldt Spur ridge above Mad R. SE of Blue Lake 76 Comment
  SEINET3862856 Image available Lycopodium clavatum H. E. Parks, W. K. Parks 1932-7-30 01132 Humboldt Campp 21', Hammond Lumber Company, Trinidad.; 0 152 Comment
  LA31994  Lycopus uniflorus H. E. Parks; Joseph P. Tracy 1924-8-3 6765 Humboldt Big Lagoon 6 Comment
  HSC99631  Lysichiton americanus Gordon Leppig 1998-3-25 728 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC1198266  Lysichiton americanus Joseph P. Tracy 1947-5-24 17690 Humboldt Big Lagoon 9 Comment
  UCSB26679  Lysichiton americanus Neil Havlik 1968-8-21 63 Humboldt collected ath the S-end of the Big Lagoon N of Trinidad Big Lagoon and Trinidad 1 Comment
  HSC34698  Lythrum hyssopifolia Thomas W. Nelson 1974-9-12 1706 Humboldt KOA campground along E side of Hwy. 101, 3 mi. S of Arcata Comment
  UC494086  Madia elegans H. E. Parks and J. P. Tracy 1930-5-25 882 Humboldt Laribee Valley Comment
  UC494147  Madia elegans H. E. Parks, J. P. Tracy 1930-5-25 882 Humboldt Laribee Valley Comment
  CAS-BOT-BC343021  Madia gracilis Ira L. Wiggins 1930-7-11 4679 Humboldt Near Samoa Comment
  HSC50342  Madia gracilis Overton, Butler 1979-7-24 9692 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC58706  Madia gracilis Griswold, Butler 1979-7-10 7133 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC74087  Madia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2615 Humboldt McKeown Ranch, N of Dinsmore. Comment
  JEPS7503  Madia gracilis Joseph P. Tracy 1937-7-29 15596 Humboldt w slope near top South Fork Mountain (at Hyampom Trail) 1676 Comment
  JEPS40406  Madia gracilis W. L. Jepson 1903-6-29 2235 Humboldt Low Gap Comment
  SBBG34731  Madia gracilis T. L. Secrest 1948-7-1 Humboldt near Hwy 101, southern Humboldt county Comment
  UC495627 Image available Madia gracilis Joseph P. Tracy 1931-6-28 9588 Humboldt lower foothills of northwest slope of Buck Mountain Comment
  UC495632  Madia gracilis Joseph P. Tracy 1932-7-13 10494 Humboldt at Corral Praire; Trinity Summit, Klammath Mountains 1524 Comment
  NY214972  Madia gracilis subsp. pilosa J. P. Tracy 1931-6-28 9588 Humboldt Buck Mountain, lower foothills of its northwest slope 762.0 Comment
  POM284946  Madia madioides Lyman Benson 1929-7-16 1868 Humboldt Weott Ranger Station. Comment
  UC581813  Madia sativa Joseph P. Tracy 1936-6-9 14909 Humboldt Upper Mattole Valley 121 Comment
  CAS-BOT-BC343594  Madia sativa Doris K. Kildale 1925-7-28 1093 Humboldt Riverside on the Van Duzen River near Strong's Station Comment
  HSC89446  Maianthemum dilatatum P. A. Daly 1984-5-13 23 Humboldt Along trail at Trinidad Head 61 Comment
  CAS-BOT-BC508508  Maianthemum dilatatum M. Louise Hutchinson 1913-4-1 s.n. Humboldt Eureka Comment
  CAS-BOT-BC508513  Maianthemum dilatatum Ira L. Wiggins 1957-6-19 14131 Humboldt Trinidad Comment
  HSC15597  Maianthemum dilatatum W. D. Stevens 1964-5-12 15 Humboldt E end of 14th St., Arcata Comment
  HSC15600  Maianthemum dilatatum Francis Winter 1960-5-6 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  CAS-BOT-BC511457  Maianthemum racemosum subsp. amplexicaule M. P. Dillingham 1972-4-30 s.n. Humboldt Vicinity of Whitehorn, Douglas fir forest Comment
  CAS-BOT-BC511459  Maianthemum racemosum subsp. amplexicaule Huron H. Smith 1911-6-6 3795 Humboldt Field Museum of Natural History, Vances Camp 19 Comment
  HSC53946  Maianthemum stellatum Griswold, Butler 1979-7-11 6994 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC56979  Maianthemum stellatum Overton, Butler 1979-7-23 9516 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  POM187937  Malacothrix floccifera Marcus E. Jones 1931-7-16 29095 Humboldt Junction, East of Arcata. Comment
  HSC100442  Malacothrix obtusa Carl C. Marshall Jun 1887 458 Humboldt Near Harris. Comment
  CAS-BOT-BC540127  Malus domestica Jay B. Walker 1995-4-26 1386 Humboldt Six Rivers National Forest. Hwy 36. 2km W of town of Cobbs. 800 Comment
  UC57530  Malus fusca Miss E. E. Tracy Nov 1901 Humboldt Eureka Comment
Read comments
Jun 17 2020
  HSC100465  Marah Carl C. Marshall Apr 1886 55 Humboldt Everywhere. Comment
  HSC23743  Marah oregana Tim Baroni 1971-7-6 122 Humboldt About 5 mi. S of Ferndale on the Mattole Rd. Comment
  HSC37571  Marah oregana J. D. Ackerman 1975-6-10 451 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  POM318838  Marah oregana Patricia Wilder 1968-8-22 4419 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  SJSU2541  Marah oregana H. L. Buckalew 1962-6-28 Humboldt Prairie Cr Redwoods State Park Comment
  UCR27001  Marah oregana A. C. Sanders 1981-8-4 2261 Humboldt Patrick's Point State Park, north of Eureka 30 Comment
  UCD106774  Medicago arabica W. Williams 1951-5-11 s.n. Humboldt location unknown. Comment
  UC162809  Medicago polymorpha J. P. Tracy 1909-8-15 3076 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC45095  Medicago polymorpha R. Sutherland 1978-5-13 2 .13578 Humboldt 285 Comment
  HSC43158  Medicago praecox R. Sutherland 1976-8-19 4 .19876 Humboldt 259 Comment
  SEINET202035  Melica aristata Joseph P. Tracy 1948-8-10 18157 Humboldt Trinity summit. On ridge 2 mi. east of Grove's Prairie. Comment
  UC552691  Melica aristata Joseph P. Tracy 1935-7-14 14075 Humboldt Grouse Mountain; North Coast Ranges 1524 Comment
  UCD86262  Melica aristata Joseph P. Tracy 1949-7-19 18374 Humboldt Grouse Mountain, at 'Friday Camp. 1219 Comment
  UC180493  Melica californica Joseph P. Tracy 1913-6-18 4195 Humboldt opposite Buck Mountain (Dinsmore's Ranch, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD87130  Melica californica August L. Hormay 1932-5-12 s.n. Humboldt Bull Creek Road, Redwood Highway, north of Graberville. Comment
  HSC101165  Melica harfordii Dana York, Kim Hayler 2012-5-18 3105 Humboldt Six Rivers National Forest, near Somes Bar, 585 meters SE of the confluence of the Klamath and Salmon Rivers, E and above Hwy. 96. 213 Comment
  HSC74230  Melica harfordii M. A. Baker 1980-7-15 2981 Humboldt Near Whiting Ridge. 1341 Comment
  UC526903  Melica harfordii Joseph P. Tracy 1926-6-20 7651 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  HSC103081  Melica stricta Sydney Carothers 2014-7-3 17 Humboldt Six Rivers National Forest, Lassics Botanical Area, Mt. Lassic, upper north slope 1775 Comment
  UC188816  Melica subulata Jos. Burtt Davy and W. C. Blasdale 1899-6-22 5822 b Humboldt Trinity Summit Comment
  UC38867  Melica subulata Harley P. Chandler May 1901 1174 Humboldt Humboldt Bay; North Coast Ranges 30 Comment
  UC526919  Melica subulata Joseph P. Tracy 1933-5-28 12416 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  UC552706  Melica subulata Joseph P. Tracy 1935-5-25 13898 Humboldt Dobbyn Creek; Northern Coast Ranges 152 Comment
  UCD88639  Melica subulata A. H. Murphy 1950-1 s.n. Humboldt E. M. Cottrell Ranch. Comment
  UCD88677  Melica subulata Joseph. P. Tracy 1942-6-2 17100 Humboldt 2 miles north of Bridgeville. 609 Comment
  UC673064  Melilotus albus Joseph P. Tracy 1938-7-15 16081 Humboldt Van Duzen Eel River (gravel bar at mouth) 15 Comment
  HSC15521  Melilotus indicus M. J. Athey 1970-10-12 11 Humboldt Along the old road to Trinidad Comment
  JEPS63291  Melissa officinalis Joseph P. Tracy 1925-8-16 7232 Humboldt near the S. Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  JEPS63479  Mentha canadensis W. L. Jepson 1936-8-7 17936 Humboldt near Arcata (Mad River); Mad River Comment
  JEPS63455  Mentha pulegium Joseph P. Tracy 1923-6-20 6336 Humboldt Briceland 304 Comment
  HSC12347  Mentha pulegium Steve Dorei 1970-10-31 135 Humboldt Scotia Bluffs, north of railroad tracks Comment
  HSC22008  Mentha pulegium Thomas W. Nelson 1970-10-18 250 Humboldt Beside Hwy. 101, 100 yds. N of bridge over Mad River Comment
  HSC100505  Micromeria douglasii Carl C. Marshall Jun 1887 459 Humboldt Everywhere. Comment
  HSC32925  Micropus californicus var. californicus Thomas W. Nelson, James Nelson 1973-5-28 968 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC98317  Micropus californicus var. californicus H. E. Parks 1930-5-25 872 Humboldt Laribee Valley 762 Comment
  JEPS13226  Microseris laciniata subsp. laciniata Joseph P. Tracy 1936-6-17 14942 Humboldt Bridgeville 198 Comment
  UC582440  Microseris nutans Joseph P. Tracy 1935-7-27 14307 Humboldt McKay Prairie Trinity Summit 1584 Comment
  UC582731  Microseris nutans Joseph P. Tracy 1932-7-11 10417 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1196767  Mimulus alsinoides Joseph P. Tracy 1946-6-23 175900 Humboldt Kneeland Prairie 762 Comment
  UC147924  Mimulus arvensis Joseph P. Tracy 1909-6-20 3000 Humboldt Freshwater Creek Northern Coast Region, Humboldt Bay region 0 Comment
  HSC20686  Mimulus aurantiacus var. aurantiacus S. R. Johnson 1965-4-16 35 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC89450  Mimulus aurantiacus var. aurantiacus P. A. Daly 1984-5-8 15 Humboldt Trinidad Head 61 Comment
  JEPS10552  Mimulus breweri Joseph P. Tracy 1932-7-10 10375 1/2 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC582605  Mimulus breweri Joseph P. Tracy 1932-7-10 10375 1/2 Humboldt Trinity Summit 1584 Comment
  HSC40847  Mimulus breweri Thomas W. Nelson 1976-7-9 3003 Humboldt W side of ridge S of E peak of Mount Lassic group 1524 Comment
  HSC20758  Mimulus dentatus R. E. Hafenfeld 1965-5-9 51 Humboldt Fern Canyon, Gold Bluff Beach Comment
  HSC31791  Mimulus dentatus Donald Spalinger 1974-4-20 18 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  UC198662  Mimulus douglasii Joseph P. Tracy 1915-5-20 4639 Humboldt Eureka Northern Coast Ranges Comment
  HSC22805  Mimulus guttatus D. E. Anderson, J. P. Smith 1970-5-10 5062 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC98025  Mimulus guttatus Cara Witte 2007-7-20 557 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  RSA18014  Mimulus guttatus Carl B. Wolf 1927-8-22 779 Humboldt Big Lagoon. Comment
  RSA249331  Mimulus guttatus D. E. Anderson, Thomas W. Nelson, S Dowty 1972-6-13 5563 Humboldt Westward lower slopes of Black Lassic near Trinity County line. 1585 Comment
  SEINET12269862  Mimulus guttatus J. P. Tracy 1950-1 18745 Humboldt near Capetown, Cape Ridge, 1 mi E of Cape Mendocino 152 Comment
  UC582481  Mimulus inodorus Joseph P. Tracy 1934-8-6 13561 Humboldt near Blue Lake; Mad River 15 Comment
  HSC103093  Mimulus kelloggii Sydney Carothers 2014-6-10 9 Humboldt Six Rivers National Forest, Lassics Botanical Area. Along trail to Mt. Lassic approaching Peak 1. 1707 Comment
  UC1196796  Mimulus layneae Joseph P. Tracy 1939-7-23 16531 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1196830  Mimulus microphyllus Joseph P. Tracy 1933-8-6 12932 Humboldt Lyons Ranch Bald Hills 762 Comment
  UC582696  Mimulus microphyllus Joseph P. Tracy 1936-5-29 14818 Humboldt French Camp Ridge 1066 Comment
  UC582701  Mimulus microphyllus Joseph P. Tracy 1933-7-25 12855 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC40813  Mimulus moschatus Thomas W. Nelson, Jane P. Nelson 1976-6-22 2866 Humboldt Along Rd. to Goat Hill. 1646 Comment
  BLMAR687  Mimulus moschatus Jennifer Wheeler 2012-8-30 687 Humboldt Lacks Creek, Beaver Ridge Pond 914 Comment
  POM273194  Mimulus moschatus var. sessilifolius Lyman Benson 1929-7-19 1873 Humboldt Mouth of Matole River. Comment
  JEPS51444  Minuartia douglasii Lincoln Constance 1934-5-29 732 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  HSC4056  Minuartia douglasii D. E. Anderson 1965-5-15 3695 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. Comment
  HSC40009  Minuartia nuttallii subsp. gregaria Thomas W. Nelson, Jane P. Nelson 1976-7-1 2905 Humboldt Along ridge N of Bear Creek. 1463 Comment
  CAS-BOT-BC433011  Mitella diversifolia Joseph P. Tracy 1949-6-5 11654 Humboldt Happy Camp Mountain. (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  HSC75445  Mitella trifida J. O. Sawyer 1980-7-18 3602 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC97492  Moehringia macrophylla Cara Witte 2007-5-23 112 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1635 Comment
  CAS-BOT-BC215567  Monardella odoratissima subsp. pallida Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit Orleans Mt. 1828 Comment
  CAS-BOT-BC215569  Monardella odoratissima subsp. pallida Doris K. Kildale 1925-8-18 1229 Humboldt Trinity Summit 1828 Comment
  HSC58020  Monardella odoratissima subsp. pallida G. L. Clifton 1979-7-31 11822 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC32590  Monardella odoratissima subsp. pallida Chesnut and Drew 1888-7-21 Humboldt South Fork Mt. Comment
  HSC40852  Monardella odoratissima subsp. pallida Thomas W. Nelson 1976-7-9 2997 Humboldt Along W side of ridge S of E peak of Lassic Mtn., (Signal Peak). 1524 Comment
  BLMAR645  Monardella sheltonii Jennifer Wheeler 2011-8-31 645 Humboldt Lacks creek, Pine Ridge road, spur 3 at Stormy Saddle 1097 Comment
  OBI13608  Monardella sheltonii Carl B. Wolf 1937-8-13 9223 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New rd towards Trinity Summit Comment
  HSC99284  Monardella villosa J. Wendell Howe 1931-6-19 Humboldt Redway Comment
  RSA697855  Monardella villosa subsp. subserrata J. R. Bruff 1937-8-17 934 Humboldt Richardson Grove, bed of Eel River. 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
  HSC12368  Morella californica C. E. Fellows 1970-10-7 375 Humboldt McKinleyville 0.25 mi. SW of end of Murray Rd. Comment
  HSC44168  Muhlenbergia filiformis Thomas W. Nelson, Jane P. Nelson 1977-9-3 3738 Humboldt Head of Bear Creek 1585 Comment
  HSC70359  Myosotis discolor M. A. Baker 1980-6-7 1874 Humboldt Near Ammon Creek 732 Comment
  UC1239639  Myosotis discolor Joseph P. Tracy 1924-8-3 6748 Humboldt Stone Lagoon Northern Coast Region, Stone Lagoon 6 Comment
  UC1239641  Myosotis discolor Joseph P. Tracy 1920-6-6 5337 Humboldt along Freshwater Creek near Wrangletown; Northern Coast Ranges 30 Comment
  UC582608  Myosotis discolor Joseph P. Tracy 1936-6-9 14891 Humboldt Cape Ridge back of Cape Mendocino; Cape Ridge 243 Comment
  HSC90317  Myosotis discolor Jean Hanson 1980-5-24 76 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka, W end of island, base of dike on S side Comment
  HSC95678  Myosotis sylvatica Steven Lee 2004-4-13 18 Humboldt Arcata Community Forest, hillside along Jolly Giant Creek Comment
  HSC3730  Myosotis sylvatica William J. Ferlatte 1963-5-17 48 Humboldt Near 11th and B Sts., Arcata Comment
  CAS-BOT-BC101668  Myrica californica Doris K. Kildale 1926-3-20 1551 Humboldt Big Lagoon Comment
  UCD150388  Myriophyllum aquaticum William Anderson 1958-12-24 s.n. Humboldt McKinleyville. Comment
  UC526762  Nassella lepida Joseph P. Tracy 1933-5-20 12247 Humboldt hillside near Petrolia; Northern Coast Ranges, Mattole Valley 152 Comment
  HSC6874  Nasturtium officinale R. L. Jarvis 1962-4-17 17 Humboldt 0.5 mi. S of Bayside turnoff on Old Arcata Rd. 15 Comment
  HSC54536  Navarretia capillaris Overton, Butler 1979-7-23 9487 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC55077  Navarretia capillaris G. L. Clifton, Griswold 1979-7-31 11689 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1197901  Navarretia capillaris Joseph P. Tracy 1935-7-28 14314 1/2 Humboldt head Devil's Hole , head of Devil's Hole (Trinity Summit) 1828 Comment
  UC33918  Navarretia intertexta Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5674 C Humboldt Hoopa Mt. North Coast Ranges Comment
  UC1222720  Navarretia intertexta Joseph P. Tracy 1950-6-15 18773 Humboldt between Garberville and Harris (on the Robertson Ranch) Comment
  UC1197902  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1908-6 2931 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC906686  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1947-7-5 17794 Humboldt Mud Springs , Mud Springs (Trinity Summit) 1371 Comment
  SEINET10840156  Nemacladus capillaris Tracy 1930-7-10 TRACY 8865 Humboldt Brannan Mountain 1219 Comment
  UC249523  Nemophila menziesii var. atomaria Joseph P. Tracy 1922-5-28 6055 Humboldt Little River Beach Northern Coast Ranges 6 Comment
  HSC99413  Nemophila parviflora var. austiniae K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 62 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
  JEPS1926  Nemophila pedunculata Joseph P. Tracy 1927-3-27 7858 Humboldt near South Fork Trinity River (Trinity River Valley); Northern Coast Ranges, nr South Fork Trinity River Valley 182 Comment
  RSA46499  Nicotiana bigelovii Doris K. Kildale 1925-9-12 1327 Humboldt Salmon Crk near Miranda. 114 Comment
  CAS-BOT-BC60564  Noccaea fendleri subsp. glauca Lincoln Constance; Reed C. Rollins 1942-5-12 2887 Humboldt Klamath-Siskiyou Region. Klamath River 7 miles northeast of Weitchpec. 121 Comment
  HSC64816  Noccaea fendleri subsp. glauca J. P. Smith, J. O. Sawyer 1976-5-2 8632 Humboldt Redwood Creek-Hoopa Rd., 0.6 mi. W of its junction with Loop Rd. in Hoopa Reservation 122 Comment
  HSC43110  Notholithocarpus densiflorus var. densiflorus Thomas W. Nelson, Jane P. Nelson 1978-2-5 3760 Humboldt Kneeland, E side of junction of Kneeland and Maple Creek roads 671 Comment
  HSC36066  Nuphar polysepala Wm. Henry 1973-5-12 Humboldt Clam Beach Lagoon, .5 mi. S of Little River Comment
  JEPS44827  Oemleria cerasiformis W. L. Jepson 1902-7-1 1974 Humboldt Redwood Creek; Hupa Road Comment
  CDA38489  Oenanthe sarmentosa Margaret Bellue 1932-9-28 s.n. Humboldt Near Arcata. 0 Comment
  SEINET12119027  Oenanthe sarmentosa J. P. Tracy 1950-1 19348 Humboldt Field's Landing, 2 mi S of town 6 Comment
  CDA38173  Oenothera villosa subsp. strigosa E. C. Whitney 1968-6-26 s.n. Humboldt 1440 Carson Woods Road. 0 Comment
  HSC92716  Oenothera villosa subsp. strigosa D. K. Imper 1987-7-14 Humboldt S of Trinidad, behind Matson Home, just E of Hwy. 101 near Moonstone Beach Exit 46 Comment
  HSC5070  Oreostemma alpigenum var. andersonii J. P. Tracy 1919-9-22 5278 Humboldt Trinity Summit 1890 Comment
  UC585980  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1935-7-28 14321 Humboldt Head of Devil's Hole. Trinity Summit. Comment
  CAS-BOT-BC238377  Orthocarpus Joseph P. Tracy 1935-7-24 14171 Humboldt Trinity Summit, near ranger station 1828 Comment
  RSA30598  Orthocarpus attenuatus Lincoln Constance, R. C. Rollins 1942-5-12 2891 Humboldt Klamath River 1 mile south of Orleans. 122 Comment
  HSC56205  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-8-2 12197 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1222795  Orthocarpus imbricatus Joseph P. Tracy 1950-8-8 19285 Humboldt Croghan Hole Trinity Summit (Trinity Summit); , Croghan Hole 1676 Comment
  RSA407950  Orthocarpus purpurascens J. P. Smith, Thomas W. Nelson 1977-6-30 9210 Humboldt Samoa Peninsula just east of the drag strip. Comment
  HSC48813  Osmorhiza occidentalis Brad Klipfel 1973-7-31 227 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55852  Osmorhiza occidentalis G. L. Clifton, Terry Griswold 1979-7-25 10822 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC75448  Osmorhiza occidentalis J. O. Sawyer 1980-7-18 3582 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC104035  Oxalis oregana E. R. Fyer 2015-3-19 7 Humboldt Six Rivers National Forest; along the East Fork of Willow Creek, off Hwy. 299 484 Comment
  HSC75416  Oxalis oregana J. O. Sawyer, M. A. Erickson 1979-7-15 3415 Humboldt Adroni Research Natural Area, slopes along Aikins Creek 457 Comment
  JEPS43153  Oxalis oregana Lincoln Constance 1934-5-23 605 Humboldt se slope mt.above Look Prairie; Bull Creek Region, South Fork Eel River Comment
  RSA189638  Oxalis oregana Noel Holmgren, James L. Reveal 1966-6-8 2658 Humboldt Coast Range, east of Arcata, 1.5 miles south of Korbel. 274 Comment
  SEINET3347653 Image available Oxalis oregana Loran C. Anderson 1949-6-4 Humboldt South of Eureka Comment
  UC1197420  Oxalis oregana Joseph P. Tracy 1926-4-25 7413 Humboldt Strong's Station Northern Coast Ranges 60 Comment
  UCD111002  Oxalis pilosa R. N. Raynor 1935-1 s.n. Humboldt Humboldt County. Comment
  JEPS109970  Oxalis trilliifolia D. W. Taylor 2004-6-24 19139 Humboldt Head of Madden Creek, Ammon Ridge, seepage area along Forest Road 5N15 0.4 miles W of the junction with Forest Road 5N01. Comment
  CAS-BOT-BC318141  Packera bolanderi var. bolanderi Alice Eastwood; J. T. Howell 1937-6-23 4853 Humboldt Mad River Canyon, between Kneeland and Korbel Comment
  UC667097  Parnassia californica Joseph P. Tracy 1934-8-29 13619 Humboldt South Fork Mountain at McKay Camp South Fork Mountain; , McKay Camp 1676 Comment
  UC642347  Pastinaca sativa Joseph P. Tracy 1937-10-31 15694 Humboldt Rio Dell 30 Comment
  HSC99452  Pedicularis groenlandica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 102 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC213504  Pedicularis racemosa Joseph P. Tracy 1919-9-18 5249 Humboldt Trinity Summit; Northern Coast Ranges 1524 Comment
  SEINET4536600 Image available Pellaea andromedifolia Joseph P. Tracy 1921-5-30 5495 Humboldt Kneeland Prairie 762 Comment
  UC218627  Pellaea andromedifolia Joseph P. Tracy 1921-5-30 5495 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  RSA54127  Pellaea brachyptera Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain 1524 Comment
  CHSC35535  Pellaea mucronata Thomas Nelson; James Nelson 1976-5-30 2612 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC1074  Pellaea mucronata var. mucronata J. P. Tracy 1933-6-13 12561 Humboldt Hoopa Mtn., near summit on rd. from Hoopa westward to Bair's 1067 Comment
  CHSC33041  Penstemon anguineus Thomas Nelson; Jane Nelson 1976-7-1 2907 Humboldt The Lassics. Growing along east side of Red Lassic; beside rd. 1S07. 1676 Comment
  JEPS86690  Penstemon anguineus L. R. Heckard with T. I. Chuang 1990-7-15 6769 Humboldt ca 15 mi n Highway 36 (South Fork Mountain Rd); South Fork Mountain Rd., n of Hwy 36 1700 Comment
  HSC102599  Penstemon deustus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1586 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  RSA33967  Penstemon heterophyllus subsp. purdyi Doris K. Kildale 1926-4-30 1935 Humboldt Bucilana Bridge. Comment
  UC577402  Penstemon laetus var. sagittatus Joseph P. Tracy 1933-7-25 12827 Humboldt Horse Mountain 1432 Comment
  UC1222427  Penstemon laetus var. sagittatus Joseph P. Tracy 1933-7-9 12651 Humboldt Brannan Mountain Northern Coast Ranges, Brannan Mountain 1066 Comment
  HSC72988  Penstemon newberryi M. A. Baker 1980-7-23 3144 Humboldt Near Orleans Mtn. 1859 Comment
  UC169849  Penstemon rattanii var. kleei V. Rattan 1870-1 Humboldt Comment
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Sep 7 2007
  UC165061  Pentachaeta alsinoides Joseph P. Tracy 1903-5-23 1890 Humboldt dry hillside at Alder Point; Eel River 243 Comment
  HSC1077  Pentagramma triangularis D. E. Anderson 1965-11-21 4170 Humboldt 3-4 mi. S of Weitchpec along rd. to Hoopa Comment
  CAS-BOT-BC71618  Pentagramma triangularis subsp. triangularis Doris K. Kildale 1928-12-30 6765 Humboldt Phillipsville Comment
  UC906651  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1947-8-24 17894 Humboldt Box Camp Trinity Summit 1463 Comment
  UC314589  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1923-10-28 6588 Humboldt Bald Mt. Northern Coast Ranges 762 Comment
  HSC73872  Perideridia parishii subsp. latifolia Gail Newton 1980-7-14 1459 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC34702  Persicaria amphibia Thomas W. Nelson 1974-8-24 1705 Humboldt Klamath River ca. 2 mi. below the mouth of Aikins Creek Comment
  HSC89625  Petasites frigidus Brent Helm, Curtis Miller, Mark Steiger 1988-3-12 29 Humboldt Lord Ellis Summit, Hwy. 299, N facing slope adjacent to Hwy. 518 Comment
  UC1070054  Petasites frigidus var. palmatus R. Stahelin 1933-5-15 Humboldt Freshwater Eureka Quad. Comment
  POM160824  Petasites palmatus Joseph P. Tracy 1926-2-28 7377 Humboldt Trinity River Valley, near the S Fork. 183 Comment
  JEPS1435  Phacelia bolanderi Joseph P. Tracy 1916-5-31 4704 Humboldt Stitz Creek Bluff Northern Coast Ranges, Eel River 60 Comment
  RSA75339  Phacelia bolanderi F. W. Peirson 1928-7-4 7959 Humboldt On banks of Eel River at Robinson s Grove. Comment
  UC56715  Phacelia bolanderi Harley P. Chandler May 1901 1088 Humboldt Idlewild North Coast Ranges 91 Comment
  HSC99465  Phacelia heterophylla subsp. virgata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 119 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC176065  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1913-6-21 4252 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC57422  Phacelia mutabilis G. L. Clifton, Griswold 1979-7-26 10193 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  UC1051815  Phacelia nemoralis subsp. oregonensis C. R. Bell May, 1951 1098 Humboldt bank below US Hwy 101 2.9 mi n Mendocino County line 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
  UC1239735  Phacelia procera Joseph P. Tracy Jul 16 1930-Jul 19 1930 9084 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC55709  Philadelphus californicus Overton, Butler 1979-7-26 10098 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 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
  UC184148  Phleum alpinum Joseph P. Tracy 1912-7-26 3869 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC58632  Phleum pratense Gilbert Muth 1979-7-31 11490 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  HSC98126  Phleum pratense Cara Witte 2007-6-28 385 Humboldt Forest Service Road 5N10. Approximately 1/2 mile east of intersection with National Forest 1/ Titlow Hill Road. 1426 Comment
  UC1191120  Phlox douglasii subsp. rigida Joseph P. Tracy 1933-7-25 12828 Humboldt Horse Mountain 1432 Comment
  HSC36086  Phyllospadix scouleri McCready 1959-11-8 Humboldt Near Trinidad Head Comment
  CAS-BOT-BC140581  Physocarpus capitatus Thomas Nelson; Linda Barker 1977-6-3 3387 Humboldt On flood plain of Mad River at south end of Mad River Bridge 53 Comment
  CHSC1563  Physocarpus capitatus A. Small 1954-6-4 Humboldt Coastal near Capetown. Comment
  HSC18715  Physocarpus capitatus Paul Shields Jul 1955 Humboldt 1/2 mi. N of Weott Comment
  CHSC67760  Picea sitchensis Vernon H. Oswald 1997-1-29 8304 Humboldt Mad River County Park NW of Arcata, S of the mouth of Mad River. Comment
  RSA85509  Picea sitchensis G. R. Campbell 1954-3-24 19024 Humboldt 23.4 miles N of Petrolia on Old Coast Road toward Ferndale. Comment
  UC484045  Picea sitchensis Carl B. Wolf 1930-10-28 Humboldt 5 mi s Ferndale (on road to Petrolia) 152 Comment
  CAS-BOT-BC78289  Pinus attenuata A. A. Heller 1917-7-7 12811 Humboldt Alder Springs grade below Rattlesnake [spring] Spring Comment
  POM282097  Pinus contorta var. contorta H. E. Parks 1931-05 s.n. Humboldt Samoa, Pine Barrens. Comment
  RSA175259  Pinus contorta var. contorta Robert F. Thorne 1957-9-3 19017 Humboldt Patrick s Point State Park. Comment
  UC519311  Pinus jeffreyi Joseph P. Tracy 1983-8-30 13007 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1371 Comment
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Jun 28 2015
  HSC72826  Pinus monticola Gail Newton 1980-6-16 192 Humboldt Near Onion Mtn. 1280 Comment
  UC1600428  Pinus ponderosa Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  UC55659  Pinus ponderosa P. E. Goddard 1901-7-12 66 Humboldt Hupa Comment
  UCD139013  Piperia elegans subsp. elegans Linda M. Barker 1976-7-5 1635 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1326262  Piperia elongata Milo S. Baker 1947-8-11 11946 Humboldt perhaps 10 mi e Willow (Arcata-Weaverville Hwy) Comment
  HSC44610  Pityopus californicus T. Mainwaring 1978-6-2 Humboldt Horse Mountain Area. Bulk Collection 120 Comment
  CAS-BOT-BC71823  Pityrogramma Kenneth Clark 1980-6-14 693 Humboldt North fork Dead Man's Gulch, Point Delgada quad. 91 Comment
  UC667003  Plagiobothrys bracteatus Joseph P. Tracy 1939-5-14 16287 Humboldt by spring Van Duzen Valley, Dinsmore's 731 Comment
  UC1876683  Plagiobothrys kingii var. harknessii Dean W. Taylor 1995-7-2 15189 Humboldt Sheldon National Antelope Refuge playa along Highway 140 at milepost 99 (road to Cedarville CA) Comment
  POM126241  Plagiobothrys reticulatus 1907-6-20 2568 Humboldt Eureka 0 Comment
  UC1239612  Plagiobothrys reticulatus Joseph P. Tracy 1935-5-25 13884 Humboldt Dobbyn Creek Northern Coast Ranges, Dobbyn Creek 152 Comment
  JEPS60982  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1909-5-2 2960 Humboldt Eureka Northern Coast Region 0 Comment
  JEPS60990  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1912-6-9 3680 Humboldt Alton Northern Coast Region 30 Comment
  JEPS68128  Plagiobothrys tenellus Joseph P. Tracy 1932-5-1 9863 Humboldt near Garberville (Redway); Northern Coast Ranges 182 Comment
  HSC16826  Plantago erecta L. H. Myers 1963-5-14 13 Humboldt W of Lanpheres Rd., Mad River slough area Comment
  HSC16830  Plantago erecta D. B. Bader 1963-3-15 28 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  HSC40868  Plantago erecta Linda M. Barker 1976-4-30 1397 Humboldt 3 mi. W of Arcata Comment
  SEINET12342198  Plantago erecta J. P. Tracy 1950-1 18730 Humboldt Bear River Ridge 610 Comment
  RSA246719  Plantago hirtella var. galeottiana Robert F. Thorne, Percy C. Everett 1965-8-7 35173 Humboldt Big Lagoon. In bog at S end of lagoon. 2 Comment
  UC1125641  Plantago lanceolata H. L. Person 1932-7-16 Humboldt n of Trinidad (highway); Rock Point Quad. Comment
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Aug 3 2007
  HSC99488  Plantago lanceolata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 147 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
  UC1192030  Plantago subnuda Malcolm A. Nobs and S. Galen Smith 1949-8-3 1188 Humboldt s outskirts of Eureka Eureka Comment
  HSC62909  Platanthera dilatata J. M. DiTomaso 1979-5-20 1048 Humboldt Big Lagoon Park, 8 mi. N of Trinidad Comment
  HSC54595  Platanthera dilatata var. leucostachys Overton, Butler 1979-7-24 9669 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC97555  Platanthera dilatata var. leucostachys Cara Witte 2007-6-1 174 Humboldt Along Forest Service 5N10. 1.5 miles east of intersection with National Forest 1. 1365 Comment
  RSA21199  Platanthera leucostachys Carl B. Wolf 1937-8-10 9087 Humboldt Big Lagoon, bog at state park. 6 Comment
  HSC76607  Platanthera sparsiflora Teresa Prendusi 1981-7-7 121 Humboldt Near Slate Creek Butte. 1158 Comment
  HSC104447  Platystemon californicus Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 23 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC16800  Platystemon californicus Jack Rockwell 1962-5-4 49 Humboldt Lone Star Junction 549 Comment
  UC1540409  Platystemon californicus Gary L. Hannan 1976-5-25 166 Humboldt New Bavy Base Road, 6.6 km S of bridge to Eureka Comment
  RSA256718  Platystemon californicus var. californicus John S. Palmer 1975-5-24 370 Humboldt Samoa Dunes; dunes off Samoa Blvd. across from the boat landing Comment
  JEPS4813  Plectritis brachystemon Joseph P. Tracy 1933-5-20 12250 1/2 Humboldt Northern Coast Ranges, Mattole Valley Mattole Valley; Northern Coast Ranges, Mattole Valley 60 Comment
  UC169079  Plectritis brachystemon Harley P. Chandler 1901-6-6 1414 Humboldt North Coast Ranges, Klamath River, Saint's Rest, (Nature's Rest) Nature's Rest; North Coast Ranges, Klamath River, Saint's Rest 304 Comment
  UC1239586  Plectritis congesta Harley P. Chandler May, 1901 1149 B Humboldt North Coast Ranges, Humboldt Bay Humboldt Bay; North Coast Ranges, Humboldt Bay 3 Comment
  HSC10611  Pleuropogon refractus R. Spellenberg 1965-6-14 1134 Humboldt 1.5 mi E of Bayside on road leading up Jacoby Creek Comment
  HSC57304  Pleuropogon refractus G. L. Clifton 1979-7-31 11859 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA10057  Pleuropogon refractus Joseph P. Tracy 1932-7-14 10539 Humboldt Corral Prairie 1524 Comment
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Aug 15 2009
  UC1103801  Pleuropogon refractus Joseph P. Tracy 1911-6-4 3234 Humboldt along Little River, 5 mi from the coast Little River; Northern Coast Region, Little River 121 Comment
  UC1103802  Pleuropogon refractus Joseph P. Tracy 1918-4-28 4886 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC1152046  Pleuropogon refractus Joseph P. Tracy 1951-6-26 19560 Humboldt halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road) Comment
  HSC10642  Poa bolanderi C. S. Chavez 1965-5-7 67 Humboldt Redwood forest behind H.S.C. campus. Comment
  UCD90580  Poa bolanderi A. H. Murphy 1951-8-17 90 Humboldt near Cold Spring Lookout, South Fork Mtn., ca. 15 miles northeast of Bridgeville. Near Trinity County line. 1219 Comment
  HSC97639  Poa bulbosa Cara Witte 2007-5-22 77 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1398 Comment
  UC1103179  Poa confinis Joseph P. Tracy 1922-5-28 6056 Humboldt Little River Beach North Coast Ranges. Little River Beach 6 Comment
  UCD90512  Poa confinis Linda M. Barker 1976-4-30 1412 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SACT001836  Poa confinis Lyle Bibb 1963-5-11 Humboldt Coastal strand amound sandy beach east or Arcata. Sand spit. Comment
  CHSC10126  Poa douglasii J. W. Johnson 1961-8-17 1028 Humboldt On a dune, W.M. Lanphere Farm, Samoa Peninsula. Comment
  UC70825  Poa douglasii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6181 Humboldt Ferndale Comment
  HSC10718  Poa howellii J. P. Tracy 1926-5-15 7490 Humboldt Kneeland Prairie. Comment
  RSA10144  Poa howellii Joseph P. Tracy 1926-5-15 7490 Humboldt Kneeland Prairie 762 Comment
  UC60806  Poa howellii Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5359 B Humboldt near Harris Harris Comment
  UC1103185  Poa kelloggii J. P. Tracy 1901-6-10 11321 Humboldt immediate vicinity Eureka 0 Comment
  LA12558  Poa macrantha S. K. Harris; 1936-6-15 3383 Humboldt Trinidad Head Comment
  UCD91557  Poa nemoralis A. E. Lyons 1926-6-1 s.n. Humboldt in city of Orick. Comment
  HSC39179  Poa pratensis D. E. Anderson, J. P. Smith 1971-6-28 - 1222 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  RSA10072  Poa pratensis Joseph P. Tracy 1926-5-9 7469 .5 Humboldt Valley of south Yager Creek Comment
  HSC40517  Poa secunda subsp. secunda Thomas W. Nelson, Jane P. Nelson 1976-6-22 2876 Humboldt Area at Goat Hill. 1666 Comment
  UC525662  Poa secunda subsp. secunda Joseph P. Tracy 1932-7-17 10693 Humboldt head of Devil's Hole Trinity Summit; Klamath Mts 1828 Comment
  UC1145118  Poa trivialis Joseph P. Tracy 1950-6-8 18723 Humboldt Bear Beaver Ridge 609 Comment
  RSA21204  Polemonium carneum C. B. Wolf 1937-8-10 9093 Humboldt Big Lagoon, so. side, w. side of Redwood Highway 6 Comment
  HSC61767  Polygala californica Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan 229 Comment
  SEINET1004856  Polygala californica Joseph P. Tracy 1912-1 3667 Humboldt Alton 30 Comment
  UC275330  Polygala californica Joseph P. Tracy 1923-6-20 6334 Humboldt Briceland Northern Coast Ranges, Briceland 304 Comment
  HSC54520  Polygala cornuta Overton, Butler 1979-7-23 9448 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  UC672976  Polygonum amphibium var. stipulaceum Harold E. Parks and Joseph P. Tracy Aug. 1934 11163 Humboldt Dry Lagoon 3 Comment
  UC275292  Polygonum aviculare subsp. depressum Joseph P. Tracy 1923-10-7 6567 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC100601  Polygonum bistorta Carl C. Marshall Jun 1886 269 Humboldt Trinity Summit. Comment
  UC144100  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1909-7-31 3038 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  BLMAR616  Polygonum paronychia Jennifer Wheeler 2011-5-20 616 Humboldt King range, Below Strawberry Rock along Mattole dunes 7 Comment
  HSC17520  Polygonum paronychia R. T. Forester 1963-3-21 31 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  UC1198089  Polygonum parryi Joseph P. Tracy 1929-8-18 8658 Humboldt on river opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 762 Comment
  JEPS79950  Polygonum polystachyum Joseph P. Tracy 1940-10-18 16775 Humboldt Eureka 30 Comment
  HSC98633  Polygonum spergulariiforme Cara Witte 2008-8-5 983 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  CHSC44  Polypodium californicum M. Anthony 1960-5-1 Humboldt Coastal. Comment
  HSC100121  Polypodium glycyrrhiza Margaret Weatherwax 1975-6-26 7 Humboldt Road from Korbel to Maple Creek, 2 mi. SW of Korbel Comment
  HSC1114  Polypodium scouleri D. E. Anderson 1961-8-25 1754 Humboldt 1.5 mi. S of Trinidad Comment
  HSC59125  Polypogon australis Terry Roth 1979-4-28 17 Humboldt Glendale exit off of Hwy. 299, gravel road towards Mad River 30 Comment
  HSC12125  Polypogon interruptus A. S. Hitchcock 1915-7-23 839 Humboldt Eureka Comment
  HSC79510  Polypogon interruptus Kenneth Clark 1980-6-14 694 Humboldt Shelter Cove, N Fork of Dead Man's Gulch. 122 Comment
  UC1145081  Polypogon interruptus Joseph P. Tracy 1940-10-5 16748 Humboldt Trinidad 6 Comment
  UC1145082  Polypogon interruptus Joseph P. Tracy 1936-6-8 14871 Humboldt Trinidad 9 Comment
  UCD91207  Polypogon maritimus Joseph P. Tracy 1939-8-5 16377 Humboldt Along Van Duzen River, Opposite Buck Mountain. Dinsmore's. 762 Comment
  CAS-BOT-BC232594  Polypogon monspeliensis Harley P. Chandler 1901-6-1 1431 Humboldt Klamath River 335 Comment
  UC1100381  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-8-3 1176 Humboldt salt marshes around Fields Landing; around Fields Landing Comment
  SEINET11723017  Polystichum dudleyi E. A. York 1990-1-10 2670 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC46091  Polystichum imbricans J. P. Smith, Steve Selva 1970-6-14 3814 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CAS-BOT-BC76763  Polystichum imbricans subsp. imbricans L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road. Comment
  HSC55154  Polystichum imbricans subsp. imbricans G. L. Clifton, Griswold 1979-8-1 12104 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC1154  Polystichum munitum R. I. Bonn 1965-5-9 40 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC12977  Polystichum munitum M. Athey, D. La Conte 1970-11-28 2 Humboldt HSU campus Comment
  UC1196664  Populus trichocarpa Joseph P. Tracy 1922-10-8 6124 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  SEINET3837233  Potamogeton natans Unknownnown 1949-8-9 1229 Humboldt Marshy Pond 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley Comment
  JEPS42952  Potamogeton pectinatus Joseph P. Tracy 1916-6-19 4718 Humboldt Dobbyn Creek; Northern Coast Ranges 182 Comment
  UCR70886  Potamogeton pusillus S. K. Harris 1938-9-12 s.n. Humboldt Eel River, near Fernbridge 5 Comment
  SEINET8475344 Image available Potamogeton pusillus subsp. tenuissimus S. K. Harris 1938-9-12 Humboldt Eel River, near Fernbridge Comment
  UC1099897  Potamogeton pusillus var. pusillus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1162 Humboldt 1 mi s of Fields Landing; Eel River Valley Comment
  CAS-BOT-BC143080  Potentilla anserina subsp. pacifica Doris K. Kildale 1926-6-25 2178 Humboldt Big Lagoon Comment
  RSA246705  Potentilla anserina var. grandis Robert F. Thorne, Percy C. Everett 1965-8-7 35228 Humboldt Samoa Peninsula. 3 Comment
  HSC18746  Potentilla gracilis J. P. Tracy 1934-6-18 13461 Humboldt Grouse Mtn. 1524 Comment
  HSC99485  Potentilla gracilis var. gracilis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 144 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  HSC97289  Prosartes hookeri M. Mesler 2006-6-24 619 Humboldt NNE of Grouse Mtn., 1.1 mi. from NF 1 1555 Comment
  HSC15478  Prosartes smithii H. E. Parks, S. T. Parks 1952-5 24452 Humboldt Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC517502  Prosartes smithii Volney Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC517509  Prosartes smithii Victor Duran 1933-5-12 3413 Humboldt Dyerville, South Fork of Eel River Comment
  HSC15475  Prosartes smithii Francis Winter 1960-4-23 Humboldt Simpson Creek, Korbel-Maple Creek rd. 244 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
  HSC81963  Prunella vulgaris subsp. lanceolata Thomas W. Nelson, Jane P. Nelson 1979-7-3 4946 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  JEPS62489  Prunella vulgaris var. lanceolata Joseph P. Tracy 1937-6-28 15370 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  CAS-BOT-BC159976  Prunus emarginata Doris K. Kildale 1927-5-14 3192 Humboldt Big Lagoon Comment
  HSC40670  Prunus emarginata Thomas W. Nelson, Jane P. Nelson 1976-7-1 2931 Humboldt Bench W of Lassic Park (Signal Peak) 1677 Comment
  UC1198778  Prunus subcordata Joseph P. Tracy 1924-10-5 6911 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC5685  Pseudognaphalium californicum J. P. Tracy 1937-7-11 15415 Humboldt Vicinity of Garberville 122 Comment
  UC169340  Pseudognaphalium californicum Joseph P. Tracy 1912-7-21 3769 Humboldt Alton Northern Coast Region of California, Alton 30 Comment
  HSC88102  Pseudognaphalium stramineum R. W. Becking 1989-2-28 Humboldt Samoa, N Spit, Coast Guard back dunes Comment
  UC604670  Pseudognaphalium thermale Joseph P. Tracy 1938-8-14 16111 Humboldt at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  BLMAR157  Pteridium aquilinum var. pubescens Donald Hazlett 1994-6-7 157 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC421116  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt Cape Mendocino. South of point of the Cape. 30 Comment
  UC642278  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-6-3 8600 Humboldt Trinity Rivery Valley, at Willow Creek 152 Comment
  SEINET200714  Pyrola americana J. P. Tracy 1901-6-30 1191 Humboldt Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC460600  Pyrola aphylla Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC462872  Pyrola asarifolia J. W. Tilden 1946-6-21 s.n. Humboldt Bluff Creek Comment
  UC1197570  Pyrola asarifolia Joseph P. Tracy 1917-7-8 4826 Humboldt Old Kneeland Prairie Road, around Humboldt Bay 457 Comment
  UC1197584  Pyrola picta Joseph P. Tracy 1949-7-19 18377 Humboldt Grouse Mountain, at Friday Camp Grouse Mountain; , Friday Camp 1219 Comment
  CAS-BOT-BC62626  Quercus chrysolepis Doris K. Kildale 1928-4-29 5970 Humboldt Horse Mt. Comment
  HSC73544  Quercus garryana Gail Newton 1980-7-14 1469 Humboldt Near Last Chance Ridge. 1219 Comment
  SEINET4291710 Image available Quercus kelloggii Unknown 1966-1 660024 Humboldt Avenue of Giants, near Phillipsville. Comment
  UC1602338  Quercus kelloggii P. E. Goddard 1901-7-12 63 Humboldt Hupa Comment
  HSC72800  Quercus sadleriana Gail Newton 1980-6-17 219 Humboldt Near Onion Mtn. 1341 Comment
  UC180641  Quercus wislizeni Joseph P. Tracy 1914-5-14 4458 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  CAS-BOT-BC379174  Ranunculus aquatilis var. aquatilis Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC379197  Ranunculus aquatilis var. aquatilis C. C. Harris; S. K. Harris 1936-6-12 3363 Humboldt open woods, prairies and ledges on Chalk Mountain near Bridgeville Comment
  CAS-BOT-BC379199  Ranunculus aquatilis var. aquatilis Henry M. Pollard 1946-8-13 s.n. Humboldt pond near Harley place, Orleans region Comment
  HSC37650  Ranunculus aquatilis var. aquatilis Robert M. Specht, John Rehling 1976-4-25 404 Humboldt 12 mi. E of Bridgeville on Hwy. 36, at SE end of Larabee Valley Comment
  UC1196241  Ranunculus californicus Joseph P. Tracy 1901-4-14 1024 Humboldt Humboldt Bay Northern Coast Region (sand dunes of ocean beach) Comment
  HSC26468  Ranunculus californicus var. cuneatus T. O. Osborne 1970-4-8 7 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  HSC41655  Ranunculus flammula var. ovalis J. O. Sawyer 1977-4-25 3043 Humboldt N side of Buttermilk Lane in Sunny Brae across from house 1425 Comment
  HSC18167  Ranunculus occidentalis var. occidentalis Lincoln Constance 1934-5-24 645 Humboldt S Fork Eel River 122 Comment
  UC503033  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9007 Humboldt near McKay Camp (along stream below meadow); Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1103014  Ranunculus parviflorus Joseph P. Tracy 1948-6-13 18033 Humboldt halfway between Bridgeville and Blocksburg (around a pool); Larrabee Creek 457 Comment
  UC1191438  Ranunculus repens Malcolm A. Nobs and S. Galen Smith 1949-8-3 1184 Humboldt Eureka; marsh and bog land at southern outskirts Comment
  UC1196265  Ranunculus repens Joseph P. Tracy 1933-7-20 12803 Humboldt Arcata Bottom North Coast Ranges 15 Comment
  CHSC68500  Ranunculus repens var. repens Vernon H. Oswald 1997-4-10 8316 Humboldt Clam Beach between Arcata and Trinidad. On the bank of a creek on the back beach. 30 Comment
  HSC18175  Ranunculus repens var. repens E. Hunt 1949-3-9 13 Humboldt Elk River Comment
  HSC6887  Raphanus sativus S. J. Hawks 1965-4-3 12 Humboldt W of Eureka City Airport Comment
  JEPS53819  Raphanus sativus Lincoln Constance 1934-5-27 707 Humboldt South Fork Eel River, s end of Dyerville Bridge South Fork Eel River; Bull Creek Region, South Fork Eel River 45 Comment
  JEPS42009  Rhamnus californica subsp. californica W. L. Jepson 1903-6-19 2206 Humboldt Briceland, s Humboldt County Briceland Comment
  RSA246419  Rhamnus purshiana Carl B. Wolf 1937-8-13 9260 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  UC55738  Rhamnus purshiana J. Burtt Davy 1899-6-18 5609 Humboldt near Korbel (lower slopes of Bald Mt.); North Coast Ranges, Bald Mt. Comment
  UCD23454  Rhododendron columbianum K. Niles 1950-9-20 s.n. Humboldt Big Lagoon. Comment
  HSC76365  Rhododendron macrophyllum Denis Kearns 1981-7-6 66 Humboldt Near Mosquito Lake 1256 Comment
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Jul 30 2014
  HSC7877  Rhododendron macrophyllum J. Sandborg, F. Sandborg May 1968 14 Humboldt Bluff Creek near Notice Creek, hillside 793 Comment
  HSC7884  Rhododendron occidentale var. paludosum N. D. Dennis 1965-4-29 30 Humboldt Old Arcata Rd., 6 mi. S of Arcata Comment
  RSA167293  Ribes binominatum Joseph P. Tracy 1950-7-1 18949 Humboldt Grouse Mountain; at Cold Springs . 1433 Comment
  UC1225766  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1941-3-26 16813 Humboldt opposite mouth Willow Creek (Lack Pond); Trinity River Valley 152 Comment
  HSC23682  Ribes lacustre J. O. Sawyer 1971-6-14 2381 Humboldt E Fork of Horse Linto Creek at Grizzly Camp. 1341 Comment
  HSC74200  Ribes marshallii M. A. Baker 1980-7-19 3033 Humboldt Near Bret Hole. 1814 Comment
  HSC20319  Ribes menziesii Doris K. Kildale 1926-3-26 1650 Humboldt Old Fortuna Rd. near junction with new Hwy. beyond Fernbridge Comment
  HSC90028  Ribes menziesii Andrew Enberg, Brad Penkala, Dan Scofield 1990-4-9 40 Humboldt Blue Lake Rd., 0.7 mi. E of its intersection with Railroad Ave. 76 Comment
  UC1193214  Ribes roezlii P. Zinke 1950-8-4 153 Humboldt 2 mi w Harris Post Office (outside national forest); Quad. 29D3 853 Comment
  BLMAR142  Ribes roezlii var. amictum Donald Hazlett 1994-6-7 142 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  POM160297  Ribes roezlii var. amictum Joseph P. Tracy 1923-3-17 6159 Humboldt Garberville. 122 Comment
  UC4922509  Ribes roezlii var. cruentum Joseph P. Tracy 1930-7-25 8885 Humboldt Trinity River Valley at Willow Creek Trinity River Valley; Northern Coast Ranges, , Willow Creek 152 Comment
  UCD102482  Ribes roezlii var. cruentum Roman Gankin 1965-8-5 544 Humboldt Horse Mountain Road, 5.2 miles north of junction with Shelter Cove Road. Comment
  HSC53832  Ribes sanguineum Griswold, Butler 1979-7-10 6280 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  SBBG115193  Ribes sanguineum D. Leaberry 1992-6-20 Humboldt Clam Beach County Park, 1 mi N of Arcata Airport Comment
  UC1039819  Ribes sanguineum J. I. Mallory 1956-4-27 126 Humboldt 1.5 mi w Petrolia (at head of Jeffrey Gulch, Humboldt base and Mer.); Quad. 28-B4 167 Comment
  RSA0018242  Ribes sanguineum var. glutinosum E. R. Johnson 1929-08 1413 Humboldt Arcata Redwood Park. 76 Comment
  UC1215537  Ribes sanguineum var. glutinosum D. E. Anderson 1962-1-12 1907 Humboldt along road to Lanphere Ranch Comment
  UC154114  Ribes sanguineum var. glutinosum Joseph P. Tracy 1901-4-26 1051 Humboldt region about Humboldt Bay (Humboldt Hill); Northern Coast Region 0 Comment
  SEINET2153800  Ribes sanguineum var. sanguineum K. T. Harper 2002-1 2002 -4 Humboldt Redwood Park, near Orick. Comment
  CHSC97983  Ribes viscosissimum April A. Allard; Gregory D. O'Connell 2005-6-15 13 Humboldt NE of Grouse Mtn. Roadside. 5339 Comment
  SEINET200854 Image available Ribes viscosissimum J. P. Tracy 1932-7-12 10466 Humboldt Klamath Mountains Trinity Summit rdiges east of Corral Prairie 1829 Comment
  POM265891  Romanzoffia californica Lincoln Constance, R. C. Rollins 1942-5-11 2879 Humboldt 3 miles east of East Fork of Willow Creek. Comment
  UC1561989  Romanzoffia californica Barbara Ertter with Thomas J. Delendick 1987-5-16 6937 Humboldt ca. 20 airmiles e. Arcata (3. mi. e. of Berry Summit on Hwy. 299, s. side of rd. above Willow Creek) 800 Comment
  RSA0003890  Romanzoffia tracyi H. E. Parks, J. P. Tracy 1933-5-9 11008 Humboldt Vicinity of Trinidad. 15 Comment
  CAS-BOT-BC74512  Rorippa curvisiliqua S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3438 Humboldt Northwest slopes of Buck Mountain. 822 Comment
  HSC98973  Rorippa palustris subsp. occidentalis Cara Witte 2007-6-8 237 Humboldt Intersection of National Forest 1 and 4N38. Intersection to Board Camp Mountain. 1395 Comment
  UC1199034  Rosa Joseph P. Tracy 1949-8-7 18438 1/2 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC147437  Rosa californica Joseph P. Tracy 1941-6-29 16965 Humboldt Buck Mountain 762 Comment
  HSC63029  Rosa canina J. P. Smith, J. O. Sawyer 1973-5-12 6709 Humboldt Jct. of Big Hill Rd. and SR 96 at Hoopa Comment
  HSC99447  Rosa gymnocarpa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 97 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC162330  Rosa gymnocarpa Joseph P. Tracy 1911-7-7 3428 Humboldt Brannan Mountain Northern Coast Ranges (viz ridge n of Willow Creek, between Willow and Campbell Creeks, near summit) 1219 Comment
  UC467683  Rosa gymnocarpa Mrs. M. H. Manning 1901-6-7 61 Humboldt Hupa Comment
  CAS-BOT-BC146527  Rosa gymnocarpa Volney Rattan 1883-6-1 s.n. Humboldt Trinity River below the Forks Comment
  HSC100635  Rosa gymnocarpa Carl C. Marshall Jun 1885 70 Humboldt High hills and mtns. Comment
  HSC98790  Rosa gymnocarpa var. gymnocarpa Cara Witte 2007-6-14 278 Humboldt Along National Forest 1. Near Kinsey Ridge. 3/4 mile south of intersection with 4N06. 1256 Comment
  CAS-BOT-BC146826  Rosa nutkana Doris K. Kildale 1927-6-28 3606 Humboldt Mad River near covered bridge on Redwood Highway Comment
  JEPS45642  Rosa nutkana var. nutkana Joseph P. Tracy 1923-6-22 6345 Humboldt Angels Ranch Bald Mt.; Northern Coast Ranges, Bald Mt. 457 Comment
  UC673070  Rubus Joseph P. Tracy 1940-10-17 16762 Humboldt near Dyerville (South Fork Station); South Fork Station (near Dyerville) 48 Comment
  CAS-BOT-BC148387  Rubus leucodermis W. R. Dudley 1899-6-20 s.n. Humboldt South Fork of Eel River Comment
  HSC74680  Rubus leucodermis Gail Newton 1981-7-10 2225 Humboldt Near Board Camp Butte 1494 Comment
  HSC19652  Rubus macropetalus P. Markle 1962-5-22 60 Humboldt Along cross country track behind HSU in Arcata Community Forest Comment
  CHSC19737  Rubus parviflorus R. J. Vernimen 1963-5-11 51 Humboldt Clam Beach Lagoons, 10 miles N. of Arcata. Comment
  HSC19665  Rubus parviflorus Harvey Doerksen 1962-5-22 25 Humboldt 1/4 mi. N Azalea Reserve State Park, floodplain of Mad River Comment
  HSC41325  Rubus parviflorus Brad Klipfel 1974-8-2 516 Humboldt Horse Mtn. Comment
  SEINET4093648  Rubus parviflorus O. M. Clark 1932-1 707 Humboldt South Eureka. Comment
  SEINET11910996  Rubus parviflorus F. H. Utech 1986-1 86 -394 Humboldt ca 5 mi N on Kings Peak Rd., from junction with Shelter Cove Rd., near Tolkan Recreation Area 480 Comment
  HSC19677  Rubus spectabilis D. K. Smith 1968-3-3 10 Humboldt On West End Rd., ca. 3 mi. from Hwy. 299 Comment
  HSC19685  Rubus spectabilis Francis Winter 1960-3-26 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  HSC19688  Rubus spectabilis S. J. Hawks 1965-4-3 16 Humboldt Luffenholtz Beach Comment
  CAS-BOT-BC158793  Rubus ursinus Kenneth Clark 1980-6-14 683 Humboldt Upper alluvial terrace of north fork Dead Man's Gulch, Shelter Cove 106 Comment
  HSC96515  Rubus ursinus Gordon Leppig 1998-5-11 762 Humboldt Big Lagoon County Park. 3 Comment
  UC902164  Rubus ursinus Joseph P. Tracy 1946-8-25 17637 Humboldt 2 mi s Field's Landing; s of Field's Landing 6 Comment
  UCD17839  Rubus ursinus H. Olmo 8-10 May 1962 62- 37 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. Comment
  UCD17847  Rubus ursinus H. Olmo 8-10 May 1962 62- 34 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. Comment
  UCD17930  Rubus ursinus H. Olmo; T. S. Mallah 1953-4-3 53- 59 A Humboldt California. Humboldt County: Jordan Street in Rohnerville. In city limits, 0.5 blocks west of the north side of the Richfield filling station. Comment
  POM271075B  Rubus vitifolius Lyman D. Benson 1929-7-15 1815 Humboldt Clam Beach. Trinidad. Comment
  UC146145  Rumex J. P. Tracy 1906-8-18 2543 Humboldt immediate vicinity Eureka 0 Comment
  HSC70394  Rumex acetosella M. A. Baker 1980-6-7 1847 Humboldt Near Ammon Creek 732 Comment
  HSC36232  Rumex acetosella John Rehling 1975-5-7 62 Humboldt Along Alliance Rd. Comment
  HSC37233  Rumex acetosella Lon Hall 1975-6-19 399 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC44539  Rumex acetosella Brad Klipfel 1973-7-15 155 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SEINET4206289  Rumex acetosella J. Raycraft 1966-4-23 s.n. Humboldt Arcata Comment
  UC162326  Rumex crispus Joseph P. Tracy 1911-7-7 3375 Humboldt 3 mi nw Willow Creek and Trinity River junction (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  CHSC23320  Rumex fueginus Robert F. Thorne; P. Everett 1965-8-9 35329 Humboldt Clam Beach County Park; along highway in shallow water of ditch. 3 Comment
  SD50776  Rumex obtusifolius Darley F. Howe 1959-8-4 2804 Humboldt 86 miles west of Weaverville on #299 152 Comment
  HSC17604  Rumex persicarioides D. E. Anderson 1961-9-13 1812 Humboldt Trinidad Beach Comment
  HSC31482  Rumex salicifolius R. F. Thorne, P. Everett 1965-8-9 35311 Humboldt Big Lagoon 3 Comment
  HSC35617  Rupertia physodes Thomas W. Nelson, B. Reinhardt 1975-7-30 2112 Humboldt The road out Whiting Ridge at Whiting Spring Comment
  RSA275410  Rupertia physodes Thomas W. Nelson, Jane Nelson, A. P. Nelson 1977-7-1 3573 Humboldt Along road 2S08 below Goat Hill. 1524 Comment
  SEINET3893324  Ruppia maritima Rick Lundquist 1979-5-31 111 Humboldt Arcata South Quadrangle. At south end of H Street.; 0 0 Comment
  HSC93476  Salicornia depressa Gordon Leppig 1998-8-6 995 Humboldt Arcata Marsh and Wildlife Sanctuary; Humboldt Bay side of Klopp Lake dike 2 Comment
  SEINET10937633  Salicornia virginica Mary Susan Taylor 1982-10-24 Taylor 5176 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  CAS-BOT-BC132707  Salix A. T. Whittemore 1979-4-5 79 -013 Humboldt Arcata, along Alliance Road immediately north of Arcata High School 6 Comment
  UC490586  Salix Joseph P. Tracy 1932-7-31 10286 Humboldt Alton to Fortuna; Northern Coast Region, Eel R. 15 Comment
  UC526710  Salix exigua H. E. Parks and Joseph P. Tracy 1934-7-25 11090 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges 152 Comment
  SD990  Salix exigua var. hindsiana Harold E. Parks 1931-8-25 1061 Humboldt Blue Slide, Van Duzen River 89 Comment
  UC481301  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 969 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  UC481304  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 971 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  UC490566  Salix exigua var. hindsiana Joseph P. Tracy 1932-6-14 10151 Humboldt at Willow Creek Trinity River valley; Northern Coast Ranges 152 Comment
  CAS-BOT-BC107678  Salix hookeriana L. R. Abrams; G. T. Benson 1924-5-17 10732 Humboldt Lagoon between the Mad and Little Rivers Comment
  CAS-BOT-BC107758  Salix hookeriana Harold E. Parks 1931-8-1 01053 Humboldt Little River Lagoon Comment
  CAS-BOT-BC107768  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1223 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  CHSC9647  Salix hookeriana E. L. Smith 1971-8-17 1018 Humboldt On the Van Duzen River ca. 18 mi s of Eureka. Comment
  CHSC9652  Salix hookeriana E. L. Smith 1971-8-18 1023 Humboldt At Manila ca. 4 mi sw of Arcata, on w side of Humboldt Bay opposite of Eureka. Comment
  HSC19949  Salix hookeriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-11 1226 Humboldt 1 mi. N of Samoa, near coast 0 Comment
  JEPS14758  Salix hookeriana Joseph P. Tracy 1926-1-10 7345 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  RSA178540  Salix hookeriana Joseph P. Tracy 1950-9-10 19366 Humboldt On foothills of Cape Ridge. 0.5 mile S of town. 1 mile inland from Cape Mendocino. 61 Comment
  RSA34314  Salix hookeriana C. Kistner 1935-5-10 s.n. Humboldt Samoa. Comment
  RSA5665  Salix hookeriana H. E. Parks 1931-3-24 914 Humboldt Fortuna. Eel River. 10 Comment
  UC1173587  Salix hookeriana Joseph P. Tracy 1937-7-27 15509 Humboldt Mad R. at mouth of Lindsey Creek; Mad R., Lindsey Creek 15 Comment
  UC1196544  Salix hookeriana Joseph P. Tracy 1935-3-3 13715 Humboldt near mouth Mad R. 6 Comment
  UC1196630  Salix hookeriana J. P. Tracy 1905-3-26 2151 Humboldt Immediate vicinity of Eureka 0 Comment
  UC275496  Salix hookeriana Joseph P. Tracy 1925-10-11 7279 Humboldt near Kneeland Prairie (near Loren Frost place on Kneeland Rd.); Northern Coast Ranges 609 Comment
  UC470440  Salix hookeriana Joseph P. Tracy 1931-9-20 9685 Humboldt Trinidad Northern Coast Region 60 Comment
  UC481334  Salix hookeriana Harold E. Parks Aug 1931 1057 Humboldt Bishop Pine Lodge Trinidad 150 Comment
  UC481392  Salix hookeriana Harold E. Parks 1931-3-24 912 Humboldt Fortuna Eel River (banks of river) 10 Comment
  UC490469  Salix hookeriana Joseph P. Tracy 1932-9-5 10769 Humboldt Mattole R. near Petrolia; Northern Coast Region, Mattole R. 15 Comment
  UC512083  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1223 Humboldt 1 mi n Samoa (pine barrens near the coast) Comment
  UC512116  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1201 Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC519342  Salix hookeriana Joseph P. Tracy 1933-10-8 13087 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC537984  Salix hookeriana Joseph P. Tracy 1934-9-22 13676 Humboldt mouth of Mad R.; North Coast Ranges, Mad R. 9 Comment
  UC906710  Salix laevigata Harold E. Parks and Joseph P. Tracy 1942-5-16 11568 Humboldt vicinity of Garberville Garberville 152 Comment
  UC490517  Salix laevigata var. congesta Joseph P. Tracy 1932-5-22 10122 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC1225918  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1947-8-24 17896 Humboldt meadow at Box Camp Box Camp; Trinity Summit 1463 Comment
  UC469476  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1931-11-8 9744 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  HSC98697  Salix lasiandra var. lasiandra C. Witte 2008-10-18 1052 Humboldt Forest Service Road 4N32, 1/2 miles S of intersection with 5N04 1453 Comment
  CAS-BOT-BC107593  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1324 Humboldt In dry ravines on west slope of Berry's Mountain, east of Redwood Creek, on Trinity Highway 762 Comment
  JEPS12966  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt at Redwood Creek Berry's; Northern Coast Ranges 274 Comment
  UC469415  Salix lasiolepis Joseph P. Tracy 1927-5-13 7996 Humboldt Redwood Creek, at Berry's 274 Comment
  UC490543  Salix lasiolepis Joseph P. Tracy 1932-5-10 9958 Humboldt near Petrolia; Northern Coast Ranges, Mattole River 15 Comment
  UC490551  Salix lasiolepis Joseph P. Tracy 1932-3-6 9776 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC504026  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1319 Humboldt Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  UC504030  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1321 Humboldt Redwood Creek, at Berry's, on Trinity Highway Comment
  UC506392  Salix lasiolepis Joseph P. Tracy 1932-6-4 10126 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC512018  Salix lasiolepis C. R. Ball, H. E. Parks, and J. P. Tracy 1932-5-17 1340 Humboldt near pond at Willow Creek (Graham Ranch) near junction with Trinity River 152 Comment
  CDA39553  Salix lasiolepis Gordon Leppig 1999-4-15 1116 Humboldt Big Lagoon County Park; Big Lagoon Bog. Comment
  CAS-BOT-BC107293  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01241 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CDA23002  Salix lasiolepis var. bigelovii Haggal 1994-6-7 s.n. Humboldt Arcata. 0 Comment
  CAS-BOT-BC107415  Salix lasiolepis var. lasiolepis L. R. Abrams 1916-7-11 5968 Humboldt near Blocksberg Comment
  CAS-BOT-BC125608  Salix melanopsis Doris K. Kildale 1926-8-15 2516 Humboldt Willow Creek, flat in Trinity River Valley Comment
  CAS-BOT-BC125613  Salix melanopsis Doris K. Kildale 1928-6-10 5084 Humboldt Strongs Station - Van Duzen River Comment
  JEPS14788  Salix melanopsis Joseph P. Tracy 1933-6-11 12552 Humboldt S. Fork Eel River near Miranda; Northern Coast Ranges 60 Comment
  LA208879  Salix melanopsis Mrs. H. P. Bracelin; 1931-5-2 283 Humboldt E of Redwood Hwy.; 6 km. S of Alton 20.0 Comment
  UC1196568  Salix melanopsis Joseph P. Tracy 1932-5-1 9848 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC470456  Salix melanopsis Joseph P. Tracy 1931-9-7 9647 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC511986  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1242 Humboldt Van Duzen R. at Blue Slide; Van Duzen R. 91 Comment
  CAS-BOT-BC129126  Salix scouleriana W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  CAS-BOT-BC129175  Salix scouleriana W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  HSC102196  Salix scouleriana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1110 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
Read comments
Jul 9 2015
  RSA47090  Salix scouleriana Doris K. Kildale 1926-9-9 2687 Humboldt Low gap of Mod River. Comment
  UC1173583  Salix scouleriana Joseph P. Tracy 1935-7-26 14256 Humboldt at Water-dog Lakes Trinity Summit 1889 Comment
  UC1173623  Salix scouleriana Joseph P. Tracy 1935-3-8 13731 Humboldt alont Trinity Hwy. Willow Creek Canyon 304 Comment
  UC1173627  Salix scouleriana Joseph P. Tracy 1936-2-2 14766 Humboldt vicinity of Carlotta 30 Comment
  UC512015  Salix scouleriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1228 Humboldt pine barrens near coast 1 mi. n. Samoa Comment
  UCR142834  Salix scouleriana H. E. Parks 1931-5-14 0957 Humboldt North Coast, Little Larabee Bridge, Van Duzen River, 'alt. 450 m 195 Comment
  POM219568  Salix sitchensis H. E. Parks 1931-3-24 910 Humboldt Trinidad. 90 Comment
  RSA171961  Salix sitchensis Robert F. Thorne 1957-9-2 18989 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC1225790  Salix sitchensis Joseph P. Tracy 1948-4-11 17972 Humboldt 3 mi. e. Dyerville (Eel R.); Eel R. 60 Comment
  UC302155  Salix sitchensis Joseph P. Tracy 1926-3-14 7392 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC490489  Salix sitchensis Joseph P. Tracy 1932-5-10 9955 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC1196618  Salix tracyi Joseph P. Tracy 1936-10-17 15201 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC235016  Sambucus Volney Rattan 1878-1-1 s.n. Humboldt 3 mi. E Eureka Comment
  RSA2192  Sambucus callicarpa C. B. Wolf 1931-3-26 s.n. Humboldt from coastal bluffs, 1 mile outh of Trinidad 91 Comment
  HSC76248  Sambucus nigra subsp. caerulea Denis Kearns 1981-7-23 400 Humboldt Near Whiteys Peak. 1524 Comment
  CAS-BOT-BC235121  Sambucus racemosa var. racemosa Doris K. Kildale 1927-3-22 2938 Humboldt North Fork of Elk River Comment
  HSC22838  Sambucus racemosa var. racemosa C. D. Hunter 1964-4-12 Humboldt 3 mi. S of Big Lagoon along Hwy. 101 Comment
  HSC31462  Sambucus racemosa var. racemosa Steve Selva, Roger Jensen 1974-8-28 99 Humboldt Behind Humboldt State University, Arcata. Comment
  UCSB25080  Sambucus racemosa var. racemosa Keefe, Joseph 1967-7-8 Humboldt Juntion Crannell Road and Little River Drive, north of Eureka 6 Comment
  HSC13297  Sanguisorba minor D. Santana 1970-5-16 Humboldt 2 mi. N of Fortuna off ramp along Hwy. 101 Comment
  RSA245004  Sanguisorba minor B. D. Rogers, W. J. Ferlatte 1966-8-15 3122 Humboldt 1/2 mile E of Azalea State Park. Arcata. Comment
  CAS-BOT-BC157199  Sanguisorba officinalis Carl B. Wolf 1934-7-2 5901 Humboldt Snow Camp (mts. E. of Korbel), near small lake 1371 Comment
  HSC104438  Sanguisorba officinalis J. Martin, Bianca Hayashi, Cheri Sanville 2012-8-28 Humboldt Northern end of Christmas Prairie Lake Comment
  HSC26344  Sanicula arctopoides Thomas W. Nelson 1971-4-12 377 Humboldt S spit of Humboldt Bay. Comment
  HSC26452  Sanicula arctopoides T. O. Osborne 1970-5-17 18 Humboldt Sugarloaf Rock, Cape Mendocino Comment
  CAS-BOT-BC223253  Sanicula bipinnatifida Joseph P. Tracy 1938-7-4 15985 Humboldt Valley of South Yager Creek 762 Comment
  UC1197110  Sanicula bipinnatifida Joseph P. Tracy 1928-6-24 8461 Humboldt Valley of South Yager Creek 762 Comment
  HSC32851  Sanicula crassicaulis Thomas W. Nelson, Jane P. Nelson 1973-5-28 943 Humboldt McKeown Ranch N of Dinsmore Comment
  UCR32083  Sanicula crassicaulis David J. Keil 1983-7-2 17341 Humboldt 2.8 mi south of SR 299 along Titlow Hill Rd., SW of Willow Creek 1098 Comment
  UC642248  Sanicula crassicaulis Joseph P. Tracy 1937-5-8 7967 Humboldt Phillipsville, South Fork Eel River South Fork Eel River; Phillipsville, South Fork Eel River 121 Comment
  UC791070  Sanicula laciniata Joseph P. Tracy 1948-5-31 18018 Humboldt Alder Point 152 Comment
  HSC68994  Sanicula tracyi Jacqueline Greenleaf 1980-8-12 327 Humboldt Near Becker Cabin. 1143 Comment
  UC1197075  Sanicula tuberosa Joseph P. Tracy 1925-5-30 7037 Humboldt Northern Coast Ranges, Laribee Valley Laribee Valley; Northern Coast Ranges, Laribee Valley 701 Comment
  UC25417  Satureja douglasii J. Burtt Davy 1899-6-11 5412 Humboldt Hubbards Station North Coast Ranges Comment
  HSC102071  Saxifraga aprica M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 973 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  RSA53798  Schoenoplectus acutus var. occidentalis Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  RSA91475  Schoenoplectus maritimus F. W. Peirson 1923-7-11 4271 Humboldt Flats north of Eureka Comment
  JEPS79980  Scirpus cernuus Joseph P. Tracy 1938-6-16 15942 Humboldt Trinidad 3 Comment
  POM160902  Scirpus congdonii Joseph P. Tracy 1924-7-4 6707 Humboldt Snow Camp. 1372 Comment
  UC668009  Scirpus microcarpus Joseph P. Tracy 1933-7-25 12860 Humboldt Grouse Mountain 1524 Comment
  HSC38831  Scirpus microcarpus R. Sutherland 1976-8-13 20 .13876 Humboldt Redwood Creek, Whittemore Grove 87 Comment
  HSC45972  Scirpus microcarpus J. P. Smith 1973-5-26 6859 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  RSA167281  Scirpus microcarpus Joseph P. Tracy 1949-9-1 18533 Humboldt Trinity River Valley, at Willow Creek: Dusky s Spring 152 Comment
  RSA246886  Scirpus microcarpus Robert F. Thorne, Percy C. Everett 1965-8-9 35320 Humboldt Clam Beach County Park: along highway. 3 Comment
  UC1197795  Scoliopus bigelovii Joseph P. Tracy 1905-4-2 2156 Humboldt on Mad River near Glendale (Humboldt Bay Region); Northern Coast Region, , Mad R. 0 Comment
  UC582594  Scrophularia californica Joseph P. Tracy 1937-7-30 15565 Humboldt 6 mi se Arcata (Fickle Hill) 609 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
  JEPS62913  Scutellaria antirrhinoides Lincoln Constance 1934-5-23 614 Humboldt upper end of Look Prairie (South Fork Eel River); Bull Creek Region, , Look Prairie 365 Comment
  UCD125672  Scutellaria antirrhinoides John M. Tucker 1948-9-3 1854 Humboldt On ridge between Horse and Grouse Mountains. 1463 Comment
  UC1239701  Scutellaria californica Joseph P. Tracy 1942-7-1 17363 Humboldt opposite Buck Mountain (along the Van Duzen River, Dinsmore's); Van Duzen River, Dinsmore's 762 Comment
  UC577321  Scutellaria californica Joseph P. Tracy 1936-6-27 15004 Humboldt along South Fork Eel River (Miranda); Northern Coast Ranges, , South Fork Eel River 121 Comment
  HSC79269  Sedum laxum subsp. flavidum D. K. Imper 1983-7-13 Humboldt Six Rivers National Forest, Bennett Peak Comment
  HSC98999  Sedum laxum subsp. laxum Cara Witte 2007-6-19 294 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38 1220 Comment
Read comments
Aug 17 2011
  HSC56937  Sedum obtusatum subsp. retusum G. L. Clifton, Butler 1979-7-23 9405 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC57176  Sedum obtusatum subsp. retusum Overton, Butler 1979-7-26 9997 Humboldt Near Willow Creek 1341 Comment
  UC1225752  Sedum radiatum Joseph P. Tracy 1948-5-31 18000 Humboldt Harris Harris (on rock ledge in shade) 762 Comment
  JEPS25692  Sedum spathulifolium P. C. Hutchison 1961-5-22 2017 Humboldt along s side Willow Creek (n side hiway US 299, 2.6 mi e of Berry Summit); e of Berry Summit, s side Willow Creek Comment
  RSA0081470  Sedum spathulifolium Dave Kelly, W. Wisura 1986-7-27 4130 Humboldt 13.2 miles E of Bridgeville, along Hwy 36. Comment
  HSC92016  Sedum spathulifolium var. pruinosum E. Mackey 1987-9-7 Humboldt Patrick's Point State Park Comment
  HSC76352  Sedum spathulifolium var. spathulifolium Denis Kearns 1981-7-23 380 Humboldt Near Whiteys Peak 732 Comment
  HSC6481  Sedum spathulifolium var. spathulifolium B. R. Templeton 1962-5-24 Humboldt W side of Berry Summit Comment
  CHSC79631  Selaginella kraussiana Gordon Leppig 2000-4-12 1290 Humboldt Arcata, behind Humboldt State University, at base of stump near Fern Lake spillway. UTM zone 10, 4526N, 409E. 48 Comment
  SEINET200599 Image available Selaginella wallacei J. P. Tracy 1948-5-31 17998 Humboldt Harris 610 Comment
  HSC99136  Selaginella wallacei C. Witte 2008-10-18 1063 Humboldt Horse Mountain Botanical Area. Approxmiately 1 mile north of Horse Mountain Communication Towers. Forest Service Road 6N66 1456 Comment
  UC1223021  Senecio glomeratus Joseph P. Tracy 1950-7-12 19032 Humboldt Cameron Hill 762 Comment
  UC1223022  Senecio glomeratus Joseph P. Tracy 1950-9-10 19360 Humboldt 1 mi n Capetown; Bear River Ridge 304 Comment
  SEINET11803189  Senecio integerrimus var. major J. P. Tracy 1950-1 18638 Humboldt Trinity River Valley at Willow Creek 152 Comment
  RSA167251  Senecio jacobaea Joseph P. Tracy 1946-8-18 17626 Humboldt East side of Big Lagoon Comment
  UC205168  Senecio minimus Joseph P. Tracy 1919-8-31 5185 Humboldt Eureka 0 Comment
  JEPS37087  Senecio sylvaticus Lincoln Constance 1934-6-2 790 Humboldt Bull Cr. road to mouth of Bull Creek (and up the creek); South Fork Eel River, Bull Creek Region Comment
  HSC57449  Senecio triangularis G. L. Clifton, Griswold 1979-7-26 10262 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  HSC57671  Senecio triangularis G. L. Clifton, Griswold 1979-7-25 10860 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC58095  Senecio triangularis G. L. Clifton, Griswold 1979-8-1 12011 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC581709  Senecio triangularis Joseph P. Tracy 1930-7-16 8934 Humboldt in wet meadow at McKay Camp (South Fork Mountain); , McKay Camp 1676 Comment
  CAS-BOT-BC85837  Sequoia sempervirens Doris K. Kildale 1926-8-23 2557 Humboldt North Fork of Eel River Comment
  RSA383928  Sequoia sempervirens M. B. Dunkle 1936-8-22 4858 Humboldt Williams Grove, Eel River. 213 Comment
  UC1134198  Sequoia sempervirens H. L. Person 1933-8-10 Humboldt n of Fortuna; Rohnerville Quad., Holmes-Eureka area Comment
  UCD135226  Sequoia sempervirens C. H. Lamoureux 1956-3-17 1044 Humboldt At south boundary of Jensen Grove, between Meyers and Miranda on U.S. Highway 101. Comment
  NY64474  Sequoia sempervirens P. Nuns 12 1967 s.n. Humboldt Our Lady of Redwoods Monastery, Whitehorn Comment
  UC180183  Sidalcea diploscypha Joseph P. Tracy 1914-5-14 4466 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 Comment
  UC1121978  Sidalcea malachroides H. L. Person 1932-7-18 19483 Humboldt Freshwater Eureka Quad. Comment
  UC18696  Sidalcea malachroides J. Burtt Davy 1899-6-13 5482 Humboldt Englewood Prairie North Coast Ranges, Englewood Prairie Comment
  HSC62693  Sidalcea malviflora Michelle Stevens 1979-5-25 139 Humboldt Junction of Hwy. 96 and the GO Rd. 640 Comment
  RSA43847  Sidalcea malviflora subsp. nana H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  HSC56434  Sidalcea malviflora subsp. patula Griswold, Butler 1979-7-12 7148 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC146187  Sidalcea malviflora subsp. patula J. P. Tracy 1905-6-11 2193 Humboldt immediate vicinity Eureka (at Buckport); immediate vicinity of Eureka, at Buckport 0 Comment
  UC665632  Sidalcea malviflora subsp. patula H. E. Parks May, 1940 24177 Humboldt Dow's Prairie 30 Comment
  HSC56404  Sidalcea oregana subsp. spicata Griswold, Butler 1979-7-11 7000 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC57901  Sidalcea oregana subsp. spicata Gilbert Muth 1979-7-31 11492 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  HSC41202  Silene bernardina Thomas W. Nelson, Jane P. Nelson 1977-7-4 3602 Humboldt Along old trail above Alder Springs 1555 Comment
  HSC103773  Silene bolanderi M. R. Mesler 2014-6-4 1635 Humboldt Burr Valley Road near Dinsmore 1049 Comment
  CDA18218  Silene californica G. D. Barbe, T. C. Fuller 1974-6-17 1846 Humboldt North Coast Ranges; Shelter Cove, Upper Pacific Drive, at Sea View Rd. 91 Comment
  JEPS23250  Silene campanulata Joseph P. Tracy 1932-7-18 10704 Humboldt head of Brett Hole , head of Brett Hole (Trinity Summit) 1828 Comment
  CAS-BOT-BC387080  Silene gallica H. E. Parks; S. T. Parks 1936-6-1 5634 Humboldt Spruce Cove, Trinidad Comment
  UC161034  Silene gallica Joseph P. Tracy 1904-7-24 2124 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  UC1198359  Silene hookeri Joseph P. Tracy 1911-7-7 3414 Humboldt between Willow and Campbell Creeks (near the summit Brannan Mountain, viz. ridge n of Willow Creek); Northern Coast Ranges, Brannan Mountain, n of Willow Creek 1219 Comment
  UC1223229  Silene hookeri Joseph P. Tracy 1950-6-23 18880 Humboldt nw slope of Buck Mountain , Burr Valley (Burr Valley Road, Burr Valley) 1066 Comment
  CAS-BOT-BC389065  Silene laciniata subsp. californica Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  HSC68116  Silene laciniata subsp. californica J. P. Smith 1973-5-26 6819 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  CAS-BOT-BC389055  Silene laciniata subsp. californica Carl B. Wolf 1927-8-27 1161 Humboldt On the Klamath River 11 miles above Weitchpec Comment
  UC1198282  Sinapis arvensis J. P. Tracy 1906-6-20 2494 Humboldt immediate vicinity of Eureka 0 Comment
  UC180226  Sinapis arvensis Joseph P. Tracy 1914-10-11 4635 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  RSA43852  Sisymbrium altissimum H. M. Pollard 1947-8-6 s.n. Humboldt Roadside W of Orleans. Comment
  CAS-BOT-BC75283  Sisymbrium officinale Doris K. Kildale 1926-4-4 1725 Humboldt Eureka. Comment
  UCR12945  Sisyrinchium californicum Margariet Wetherwax 1972-9-21 s.n. Humboldt Big Lagoon, just north of Patrick's Point State Park 6 Comment
  HSC27000  Sisyrinchium californicum Brad Klipfel 1973-8-17 271 Humboldt Big Lagoon Park, N of Trinidad Comment
  UC666976  Smilacina racemosa Joseph P. Tracy 1932-7-12 10463 Humboldt ridges e Corral Prairie; Trinity Summit 1828 Comment
  JEPS86131  Smilacina racemosa Wayne Roderick 1966-5-7 Humboldt 5 mi e Carlotta 30 Comment
  UC275554  Smilacina stellata Joseph P. Tracy 1924-9-7 Humboldt Table Bluff Northern Coast Ranges 182 Comment
  SEINET3888098  Smilacina stellata var. sessilifolia Thomas Nelson, James Nelson 1975-5-24 1844 Humboldt Mckeown Ranch north of Dinsmore.; 0 Comment
  HSC21296  Solanum aviculare A. H. Teshima 1963-4-20 21 Humboldt Moonstone Beach area Comment
  HSC61867  Solanum aviculare John Sanders 1980-9-22 Humboldt Crannell, L side of trail N of Christie Ranch 61 Comment
  HSC21307  Solanum nigrum Paul Shields 1955-9-29 Humboldt 1/2 mi. S of Fernbridge Comment
  RSA183613  Solanum umbelliferum D. E. Anderson 1965-6-1 3778 Humboldt Along Friday Ridge Road, about 3 miles north-east of its Jct. with Titlow Hill Road. 1067 Comment
  UC585974  Solanum umbelliferum Joseph P. Tracy 1924-5-4 6668 Humboldt 6 mi w of Bridgeville (Van Duzen River); Van Duzen River 121 Comment
  POM203673  Solidago canadensis subsp. elongata I. L. Wiggins 1932-7-25 5895 Humboldt Roadside near McKinleyville. Comment
  HSC76412  Solidago elongata D. K. Imper 1981-7-21 887 Humboldt Near Table Bluff 38 Comment
  UC535089  Solidago elongata H. E. Parks 1931-7 1056 Humboldt Trinidad 76 Comment
  HSC89418  Solidago lepida var. salebrosa P. A. Daly 1986-1-20 44 Humboldt Trinidad Head, along trail 61 Comment
  CAS-BOT-BC365662  Solidago spathulata L. R. Abrams 1916-7-20 6144 Humboldt Eureka Comment
  HSC39962  Soliva sessilis Linda M. Barker 1976-4-13 1385 Humboldt 3 mi. W of Arcata Comment
  UCD136120  Soliva sessilis Linda M. Barker 1976-4-13 1385 Humboldt 3 miles west of Arcata. Comment
  HSC35010  Soliva sessilis J. O. Sawyer 1975-5-20 2695 Humboldt 1445 Chester Ave., Sunnybrae Comment
  HSC26465  Sonchus asper T. O. Osborne 1970-7-18 24 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  HSC39803  Sonchus asper Peter Sorensen 1976-7-11 Humboldt King Salmon Comment
  UC1222306  Sorbus californica Joseph P. Tracy 1951-6-14 19419 Humboldt Snow Camp Comment
  HSC102588  Sorbus scopulina M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1575 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC62679  Sparaxis tricolor Michelle Stevens 1979-5-18 49 Humboldt Arcata, 11th and B St. 0 Comment
  UC1103519  Sparganium emersum var. emersum Joseph P. Tracy 1934-10-21 13692 Humboldt in front of s end Stone Lagoon (Dry Lagoon); Dry Lagoon 3 Comment
  HSC89257  Spartina alterniflora Karen Kovacs 1989-10-26 Humboldt .5 mi. N of Samoa-Eureka bridge, E of Hwy. 255, Humboldt Bay Comment
  HSC4234  Spergula arvensis D. E. Anderson 1961-9-13 1823 Humboldt Comment
  HSC26360  Spergularia macrotheca T. O. Osborne 1970-6-18 46 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  HSC43208  Spergularia rubra R. Sutherland 1976-8-18 8 .18876 Humboldt 183 Comment
  JEPS64512  Spiranthes romanzoffiana W. L. Jepson 1921-8-11 9412 Humboldt Big Lagoon Comment
  RSA249514  Spiranthes romanzoffiana Robert F. Thorne, Percy C. Everett 1965-8-5 35154 Humboldt Samoa Dunes. 3 Comment
  HSC100155  Spirodela punctata Kenneth Clark 1979-4-21 148 Humboldt Off of Cranell Rd., 50 ft. E of Hwy. 101 Comment
  CHSC804  Stachys ajugoides var. rigida 1941-5-30 Humboldt Comment
  UC175781  Stachys ajugoides var. rigida Joseph P. Tracy 1912-7-27 3881 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC153991  Stachys ajugoides var. rigida Joseph P. Tracy 1906-6-24 2497 Humboldt region about Humboldt Bay (s side of Humboldt Hill); Northern Coast Region 0 Comment
  UCLA70845  Stachys ajugoides var. rigida C. Epling Aug 1933 Humboldt on Weaverville-Arcata Road Willow Creek Comment
  HSC12030  Stachys arvensis D. Santana 1970-11-2 113 Humboldt 14th and B St. Arcata Comment
  RSA447391  Stachys emersonii Christopher Davidson 1973-5-29 2201 Humboldt Ca. 2 mi S of Carlotta on St. Hwy 36 61 Comment
  CHSC109578  Stachys mexicana B. Castro; L. P. Janeway 2004-9-11 1475 Humboldt North Coast. Near blocked S end of Little River Road 0.25 mi N of Central Avenue; near S end of Clam Beach. Low ground, flats partially shaded by alder trees festooned with English ivy; base of steep slopes of coatal terrace, back edge of beach stabilized dunes along old road. 4 Comment
  HSC63580  Stachys rigida J. P. Smith 1973-5-26 6789 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC59441  Stachys rigida Kenneth Clark 1979-5-29 364 Humboldt 0.1 mi. past end of Granite Ave., along Jolly Giant Creek 23 Comment
  CAS-BOT-BC175348  Stellaria borealis subsp. sitchana Malcom A. Nobs; S. Galen Smith 1949-8-9 1245 Humboldt Clam Beach Comment
  SEINET4110862  Stellaria borealis var. sitchana D. W. Taylor 2004-1 19125 Humboldt Pond in the divide between Frost Creek and Martin Creek, about 1 air mile east of the Alderpoint Road. 518 Comment
  HSC59679  Stellaria media George Kirn 1977-10-14 Humboldt Eureka, 6th and L St. 12 Comment
  UC668077  Stellaria obtusa Joseph P. Tracy 1935-7-23 14161 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  CAS-BOT-BC516465  Stenanthium occidentale Joseph P. Tracy 1937-7-25 15558 Humboldt Happy Camp Mountain, in Trinity Fummit range, northeast of Hawkins Bar 1280 Comment
  UC1199363  Stephanomeria elata Joseph P. Tracy 1930-7-25 8880 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC32547  Stephanomeria virgata Thomas W. Nelson 1973-9-3 1122 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC58417  Stipa lemmonii Griswold, Butler 1979-7-12 7219 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC57118  Streptanthus tortuosus Walter Overton, Marvin Butler 1979-7-25 9863 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC74748  Streptanthus tortuosus Gail Newton 1981-7-22 2260 Humboldt Near Bug Creek 1375 Comment
  UC162599  Streptanthus tortuosus Harley P. Chandler June 1901 1441 Humboldt Klamath River North Coast Ranges 304 Comment
  HSC58105  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-8-1 12040 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC99005  Streptanthus tortuosus var. tortuosus Cara Witte 2008-6-15 730 Humboldt Coldspring Camp. 1460 Comment
  HSC32139  Streptopus amplexifolius D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5606 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UCSB25555  Streptopus amplexifolius Keefe, Joseph 1967-7-9 Humboldt Fern Canyon, south edge of Prairie Creek State Park 3 Comment
  HSC56070  Suksdorfia ranunculifolia G. L. Clifton, Griswold 1979-7-31 11737 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  RSA245218  Symphoricarpos albus var. laevigatus F. D. Jamison 1967-7-22 17 Humboldt 1/2 mile S of junction of Clam Beach Road and Murray Road on the frontage road. Comment
  HSC99468  Symphoricarpos mollis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 122 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC5046  Symphyotrichum chilense H. E. Parks, S. T. Parks 1930-9-14 772 Humboldt Big Lagoon Comment
  HSC5048  Symphyotrichum chilense Paul Shields 1955-6-16 Humboldt HSC Campus Comment
  HSC44086  Symphyotrichum spathulatum var. spathulatum Thomas W. Nelson, Jane P. Nelson 1977-9-3 3726 Humboldt Along Creek draining, north from pond above Alder Spring 1585 Comment
  CAS-BOT-BC99369  Symphyotrichum subspicatum W. R. Dudley 1899-6-1 s.n. Humboldt Eureka [Penninsula] Peninsula Comment
  CDA5591  Symphytum asperum T. C. Fuller 1961-9-28 7047 Humboldt Iverson property, Arcata Bottoms, 0.5 mile south of the Mad River, 0.75 mile west of Highway 101, 2 miles north of Arcata. 0 Comment
  HSC21155  Synthyris reniformis D. E. Anderson 1962-2-10 1917 Humboldt 0.5 mi. E of Big Lagoon Elementary School along abandoned stretch of Hwy. 101 Comment
  UC1198059  Synthyris reniformis Joseph P. Tracy 1909-5-16 2969 Humboldt Coast bluffs 3 mi n Trinidad; Northern Coast Ranges 30 Comment
  HSC90250  Tanacetum bipinnatum Jean Hanson 1980-5-24 58 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  UC1223144  Taraxacum officinale Joseph P. Tracy 1949-6-6 18301 Humboldt 1.5 mi n Forest Service Public Camp (Trinity Summit Road); Happy Camp Mountain 1219 Comment
  UC1239515  Taraxacum officinale Joseph P. Tracy 1924-5-4 6666 Humboldt Bridgeville Northern Coast Ranges 243 Comment
  UC1196936  Taraxia ovata Joseph P. Tracy 1942-5-16 17343 Humboldt w side of river near Garberville; S. Fork of Eel River 152 Comment
  HSC21652  Tauschia kelloggii B. R. Templeton 1962-4-14 Humboldt 3 mi. W of Orleans Comment
  CAS-BOT-BC85218  Taxus brevifolia Doris K. Kildale 1926-8-15 2503 Humboldt Willow Creek Canyon 769 Comment
  HSC1595  Taxus brevifolia F. Morrell 1949-5-22 33 Humboldt E of Berry Summit , Hwy. 299 Comment
  POM319589  Taxus brevifolia Patricia Wilder 1968-8-22 4429 Humboldt Bull Creek Flat, Humboldt Redwood State Park, north of Weott and west of U. S. 101. Coast Mountain range, south fork of Eel River. 61 Comment
  HSC55865  Tellima grandiflora G. L. Clifton, Griswold 1979-7-25 10885 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC20427  Tellima grandiflora T. M. Mingo May 1965 Humboldt W of Fairhaven Dr. intersection with Hwy. 101 Comment
  SEINET12217531  Tellima grandiflora F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -280 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UCD170789  Tellima grandiflora Gordon Leppig; Sylvia Leppig and Kai Neander 1998-5-6 745 Humboldt Rt. 101. Overlooking Big Lagoon. 40 Comment
  UC502931  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1932-6-26 10263 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC1222570  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1950-7-6 18986 Humboldt Burr Valley Buck Mountain (nw slope of mt., lower end of valley) 1066 Comment
  UC667955  Thelypteris nevadensis Joseph P. Tracy 1937-7-25 15556 Humboldt ne of Hawkins Bar (Happy Camp Mt.); Trinity Summit Range 1280 Comment
  JEPS79992  Thermopsis gracilis Joseph P. Tracy 1929-7-4 8612 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  CAS-BOT-BC5391  Thlaspi californicum Volney Rattan 1882-6-1 s.n. Humboldt at Kneeland Prairie Comment
  CAS-BOT-BC81317  Thuja plicata Doris K. Kildale 1927-2-20 2961 Humboldt Lord-Ellis road, east of Blue Lake Comment
  NY17194  Thuja plicata W. B. Cooke 1969-8-19 2222 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY17208  Thuja plicata L. S. Rose 1926-6-26 66039 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA1090  Thuja plicata E. R. Johnson 1928-8-26 1149 Humboldt 7 miles east of Arcata Comment
  RSA184919  Thuja plicata L. S. Rose 1966-6-26 66039 Humboldt U.S. Highway 299, 10 miles east of Blue Lake 610 Comment
  UCR27987  Thuja plicata A. C. Sanders 1981-8-6 2309 Humboldt Russ Park, just south of Ferndale. 61 Comment
  SD50778  Tiarella trifoliata var. unifoliata Darley F. Howe 1959-8-5 2809 Humboldt Drexel Grove, 5 miles north of Weott on #101 alternate Comment
  UC11935  Tiarella trifoliata var. unifoliata J. Burtt Davy 1899-6-13 5513 Humboldt Redwoods near Camp Grant (along the Eel River); along the Eel River Comment
  UC615036  Tiarella trifoliata var. unifoliata Beryl O. Schreiber 1934-6-4 1129 Humboldt Redwood Highway Stephen's Grove (Stephen's Grove) Comment
  HSC62637  Tolmiea diplomenziesii R. D. Zortman 1963-5-12 43 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  HSC70846  Tolmiea diplomenziesii M. A. Baker 1980-6-7 1827 Humboldt Near Ammon Creek 732 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
  CAS-BOT-BC447611  Tolmiea menziesii J. P. Tracy 1900-5-30 832 Humboldt Immediate vicinity of Eureka 152 Comment
  HSC45466  Torilis arvensis Thomas W. Nelson, Jane P. Nelson 1978-7-2 4387 Humboldt Along Hwy. 36 1 mi. E of Grizzly Creek Comment
  HSC38892  Torilis arvensis J. P. Smith, Steve Selva 1970-6-14 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  HSC44766  Torilis arvensis Maralyn O'Meara 1972-6-9 89 Humboldt Along bald Hills Rd. 16.4 mi. E of jct. with Hwy. 101 Comment
  HSC3137  Toxicodendron diversilobum Francis Winter 1960-4-24 Humboldt 1 mi. N of Redwood Creek Ranch. 396 Comment
  JEPS60737  Trautvetteria caroliniensis Joseph P. Tracy 1937-7-2 15387 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain Comment
  JEPS5769  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1937-7-25 15564 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  CDA17337  Tribulus terrestris B. Freeman 2004-7-21 PDR 1403791 Humboldt Klamath Ranges; Big Bar River Access, Hwy 96, Orleans. 0 Comment
  JEPS63112  Trichostema lanceolatum W. L. Jepson 1936-8-12 17874 Humboldt Philipsville; South Fork Eel River Comment
  HSC14449  Trichostema lanceolatum D. E. Anderson 1963-10-6 2878 Humboldt Mad River bed, across from Essex Junction. Comment
  HSC35710  Trichostema laxum Thomas W. Nelson, B. Reinhardt 1975-7-30 2094 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  HSC44328  Trichostema laxum Thomas W. Nelson, Jane P. Nelson 1977-8-6 3700 Humboldt Above Alder Spring 1616 Comment
  HSC17941  Trientalis latifolia John A. Dubois 1962-5-12 10 Humboldt 20 mi. E of Arcata Comment
  UC1223385  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1934-6-24 13260 Humboldt Kneeland Prairie 762 Comment
  SBBG122678  Trifolium arvense J. Dittes, J. Guardino 2003-6-7 2003 -65 Humboldt entrance rd to Aikens Crk Cmpgrd, ca. 4.1 air-mi NE of confluence of Trinity River and Klamath River, ca. 0.3 air-mi NW of confluence of Klamath River and Aikens Crk 106 Comment
  UC1103442  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1916-4-30 4684 Humboldt Bucksport Northern Coast Ranges, Eureka 60 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
  UC198658  Trifolium dubium Joseph P. Tracy 1913-5-31 4699 Humboldt along Eel River (Holmes Flat, from South Fork to Scotia); Northern Coast Ranges 60 Comment
  BLMAR741  Trifolium dubium Jennifer Wheeler 2015-5-18 741 Humboldt King range, at corrals or strawberry rock grazing allotment 121 Comment
  HSC45105  Trifolium dubium R. Sutherland 1978-5-17 2 .17578 Humboldt 305 Comment
  RSA43868  Trifolium dubium H. M. Pollard 1948-7-18 s.n. Humboldt Banks of Klamath River, Orleans. Comment
  HSC40039  Trifolium eriocephalum Thomas W. Nelson, James Nelson 1976-7-1 2890 Humboldt Ridge N of Bear Creek 1494 Comment
  HSC100531  Trifolium eriocephalum Carl C. Marshall Jun 1886 282 Humboldt Bald Hills, near Orcutt's. Comment
  HSC15119  Trifolium fucatum A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek Jct., 200 yards W of Lindsey Creek Comment
  HSC71067  Trifolium fucatum Thomas W. Nelson, Jane P. Nelson 1977-5-30 3400 Humboldt McKeown Ranch; along road to Anderson's Ford 854 Comment
  JEPS65883  Trifolium fucatum W. L. Jepson 1934-5-8 16718 Humboldt n Redway (South Fork Eel River) Comment
  HSC15124  Trifolium fucatum Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  UC16799  Trifolium fucatum J. Burtt Davy 1899-6-15 5546 Humboldt near Scotia; North Coast Ranges Comment
  UC303192  Trifolium fucatum Joseph P. Tracy 1923-5-13 6203 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  RSA21656  Trifolium fucatum var. fucatum Carl B. Wolf 1937-6-14 8811 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  SEINET12147991  Trifolium fucatum var. virescens J. P. Tracy 1938-1 15950 Humboldt S side of Cape Ridge. Cape Mendocino, s of point of the cape 30 Comment
  UC162777  Trifolium gracilentum J. P. Tracy 1900-6-5 844 Humboldt immediate vicinity Eureka (Bucksport) 0 Comment
  SBBG3831  Trifolium macraei H. and M. Dearing 1939-5-25 3441 Humboldt near Samoa Comment
  HSC22536  Trifolium microcephalum D. E. Anderson, J. P. Smith 1970-5-10 5057 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC45138  Trifolium microcephalum R. Sutherland 1978-5-25 1 .25578 Humboldt Near the Mattole River 288 Comment
  UC33307  Trifolium obtusiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-6-20 5701 Humboldt Hoopa Valley Comment
  RSA43865  Trifolium pratense H. M. Pollard 1947-8-9 s.n. Humboldt Roadside west of Orleans Comment
  UC1223321  Trifolium variegatum var. melananthum Joseph P. Tracy 1935-5-25 13861 Humboldt Fort Seward 106 Comment
  UC1223379  Trifolium variegatum var. melananthum Joseph P. Tracy 1933-5-20 12254 Humboldt near Petrolia (hills between town and ocean) Comment
  UC1197554  Trifolium variegatum var. variegatum Joseph P. Tracy 1936-6-17 14969 1/2 Humboldt Burr Valley nw slope of Buck Mtn 1066 Comment
  JEPS4173  Trifolium willdenovii Joseph P. Tracy 1932-5-1 9866 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  UC1223316  Trifolium willdenovii Joseph P. Tracy 1942-6-12 17111 Humboldt along hwy (at head of lagoon); Big Lagoon Comment
  UC1223322  Trifolium willdenovii Joseph P. Tracy 1935-6-8 13945 Humboldt along hwy (at n end of lagoon); Big Lagoon Comment
  UC495691  Trifolium willdenovii Joseph P. Tracy 1927-6-12 8169 Humboldt Horse Mtn Northern Coast Ranges 914 Comment
  UCD109897  Trifolium willdenovii Joseph P. Tracy 1933-6-24 12615 Humboldt North end of Big Lagoon. Comment
  UC201372  Trifolium wormskioldii Joseph P. Tracy 1918-7-3 4991 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  HSC90386  Triglochin maritima Jean Hanson 1980-4-12 44 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka, W end of island near marsh between dike and shore. Comment
  RSA239713  Triglochin maritima Larry E. DeBuhr 1973-4-23 998 Humboldt Big Lagoon 10 miles S of Orick, SW end of lagoon Comment
  HSC100368  Trillium angustipetalum J. Moore 2007-5-17 1483 Humboldt Big Flat Campground. 488 Comment
Read comments
Jan 10 2018
  HSC96775  Trillium kurabayashii M. Mesler 2006-6-6 609 Humboldt 1.2 mi. SE of intersection of USFS Rd. 8N01 and Box Camp loop 1524 Comment
  CHSC28032  Trillium ovatum L. Greenhill 1977-4-6 12 Humboldt Abundant population 10 ft. from n side of highway 36, 1mile w from Grizzly Creek State Campground. 91 Comment
  HSC102558  Trillium ovatum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1546 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC47579  Trillium ovatum Sheila Logan 1978-4-10 175 Humboldt Redwood Park behind HSU campus Comment
  HSC96778  Trillium ovatum M. Mesler 2006-6-6 611 Humboldt Big Hill Rd. 11.4 mi. E of Hwy. 96 at Six Rivers Forest boundary 1463 Comment
  UC1197824  Trillium ovatum Mrs. Harriet Tracy 1909-3-5 Humboldt near Hydesville Hydesville; Northern Coast Region 60 Comment
  UCR275118  Trillium ovatum Charity A. Hartshorn 2016-5-14 28 Humboldt Arcata Community Forest 244 Comment
  HSC34636  Trillium ovatum J. M. Sauser 1975-4-9 1 Humboldt Jacoby Creek Rd. 4 mi. E of junction with Old Arcata Rd. Comment
  HSC97558  Trillium ovatum subsp. ovatum Cara Witte 2007-6-1 178 Humboldt Along Forest Service 5N10. 1.75 miles east of intersection with National Forest 1. 1365 Comment
  CAS-BOT-BC521312  Trillium rivale Joseph P. Tracy 1911-7-7 3413 Humboldt Brannan Mountain; Viz Ridge North of Willow Creek, between Willow and Campbell Creeks, near the summit, in pine forest; Northern Coast Ranges 1219 Comment
  SEINET3821239 Image available Triodanis biflora Harley P. Chandler 1901-6-1 1415 Humboldt Klamath River 427 Comment
  HSC20858  Triphysaria eriantha Elrid H. Spinas 1948-6-16 56 Humboldt Horse Mtn. Comment
  SEINET13761905  Triphysaria eriantha subsp. eriantha R. R. Halse 2016-1 9683 Humboldt Along U.S. Hwy 101 ca., 9.5 mi S of Garberville, just N of the Mendocino County Line. 168 Comment
  CDA20454  Triphysaria eriantha subsp. eriantha P. Haggard 2003-5-11 PDR P 070982 Humboldt Northwestern California; around Humboldt Bay. 0 Comment
  HSC20903  Triphysaria pusilla F. B. Plett 1963-5-11 44 Humboldt 1.5 mi. N of Trinidad on old Hwy. 101 Comment
  UC552798  Trisetum canescens Joseph P. Tracy 1935-7-30 14359 Humboldt Salmon Summit 1767 Comment
  UC1103146  Trisetum cernuum Joseph P. Tracy 1918-4-21 4881 Humboldt Newells Camp Northern Coast Ranges (on old Kneeland Prairie Road) 304 Comment
  HSC98366  Triteleia bridgesii T. Jimerson, J. Pageau 1979-5-24 472 Humboldt Near Orleans 226 Comment
  UC1197723  Triteleia bridgesii Joseph P. Tracy 1911-7-7 3413 Humboldt viz. ridge n Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC15030  Triteleia bridgesii Mrs. M. H. Manning 1901-5-22 1 Humboldt Hupa Valley Comment
  HSC68611  Triteleia laxa Jacqueline Greenleaf 1980-7-16 240 Humboldt Near Buck Mountain. 1250 Comment
  UC709429  Triteleia laxa Joseph P. Tracy 1941-6-15 16911 Humboldt opposite Kings Peak; Wilder Ridge 762 Comment
  RSA378003  Triteleia laxa B. C. Templeton 1964-6-11 10072 Humboldt Between Salyer and Arcata on Highway 299 Comment
  CDA2565  Triticum aestivum Gordon Leppig, Sylvia Leppig, K. Neander 2000-4-14 1293 Humboldt East of Community Center parking lot, Arcata. Comment
  CAS-BOT-BC85852  Tsuga heterophylla P. C. Everett; E. K. Balls 1953-10-13 18654 Humboldt 11.3 mi. to 16.6 mi. e. of jct. with Hwy 101 on Hwy 299 from Blue Lake 640 Comment
  CAS-BOT-BC85891  Tsuga heterophylla C. B. Wolf 1930-10-25 1019 Humboldt Along the Blue Lake to Willow Creek road (Lord Ellis Road), 12 mi. above Blue Lake 304 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
  CAS-BOT-BC73930  Turritis glabra Alice Eastwood; John Thomas Howell 1937-6-23 4804 Humboldt Little Van Duzen River. Comment
  CAS-BOT-BC91108  Umbellularia californica Doris K. Kildale 1927-8-16 2515 Humboldt Upper Willow Creek Flat - Trinity River Valley. 152 Comment
  HSC49395  Umbellularia californica R. York 1979-4-16 235 Humboldt Corner of 12th and D in Arcata Comment
  HSC62939  Umbellularia californica Michael Dalke 1979-4-14 54 Humboldt Richardson Grove State Park, Hwy. 101 152 Comment
  SEINET200747  Urtica urens Joseph P. Tracy 1922-7-16 6103 Humboldt Eureka. 0 Comment
  SEINET202011  Urtica urens Joseph P. Tracy 1944-6-10 17476 Humboldt Eureka. 30 Comment
  UC1225782  Urtica urens Joseph P. Tracy 1944-6-10 17476 Humboldt Eureka 30 Comment
  CAS-BOT-BC199322  Vaccinium ovatum Carl B. Wolf 1930-10-24 1761 Humboldt Along the Klamath River 2 miles below mouth of Salmon River 152 Comment
  CHSC19510  Vaccinium ovatum P. F. Yull 1966-3-24 112 Humboldt South of Manila School. 120 yards from ocean. Comment
  CHSC67763  Vaccinium ovatum Vernon H. Oswald 1997-2-12 8307 Humboldt North Coast of Calif. South end of Trinidad State Beach, town of Trinidad. 30 Comment
  RSA1918  Vaccinium ovatum C. B. Wolf 1930-10-24 1017 Humboldt Along the Kamath River, 2 mi. below mouth of Salmon River. Comment
  CDA38877  Vaccinium ovatum Gordon Leppig 1998-6-26 854 Humboldt McKinleyville, Rte 101 at Mad River Overlook. Comment
  CAS-BOT-BC199407  Vaccinium parvifolium Alice Eastwood 1907-4-22 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC199409  Vaccinium parvifolium C. H. M. 1920-8-29 s.n. Humboldt Lower Eel River, near Pepperwood 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
  HSC102134  Valeriana sitchensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1038 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CAS-BOT-BC5074  Valeriana sitchensis subsp. scouleri Alice Eastwood; John Thomas Howell 1937-6-24 4868 Humboldt 5 miles E of Berry Summit Comment
  HSC81827  Valeriana sitchensis subsp. sitchensis Thomas W. Nelson 1979-7-11 5027 Humboldt Along trail from Grogan's Hole to North Trinity Mtn., from Grogan's Hole to summit. Comment
  UC1196349  Vancouveria hexandra J. P. Tracy 1901-6-10 1124 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC76048  Vancouveria hexandra D. E. Breedlove 1962-6-8 3068 Humboldt Along U.S. Highway 101, 8 miles north of Orick. 60 Comment
  RSA0007780  Vancouveria hexandra Larry E. DeBuhr, Gary Wallace 1972-5-22 611 Humboldt Prairie Creek, Redwoods State Park, along Davidson Rd. Comment
  UC120019  Velezia rigida Chandler Humboldt Humboldt Bay Comment
  UCD99496  Velezia rigida Joseph P. Tracy 1947-7-5 17774 Humboldt Trinity Summit; local on ridge top one mile west of Mud Springs. Comment
  CAS-BOT-BC528851  Veratrum californicum Joseph P. Tracy 1934-6-21 13244 Humboldt Local in wet place at Still Ranch 2 mi. S of Fields Landing (exterminated there about 1937) 6 Comment
  JEPS86092  Veratrum californicum var. californicum Wayne Roderick 1966-6-28 Humboldt 9 mi e Bridgeville 609 Comment
  HSC40885  Verbascum thapsus Thomas W. Nelson, Jane Nelson 1976-6-22 2868 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  HSC39719  Verbena lasiostachys D. E. Anderson, J. P. Smith 1971-6-28 - 1258 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC21740  Verbena lasiostachys var. lasiostachys Paul Shields Aug 1955 Humboldt 5 mi. N of Meyers Flat. Comment
  HSC24393  Veronica americana J. O. Sawyer 1970-6-24 2251 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  JEPS16845  Veronica americana W. L. Jepson 1932-7-30 16452 Humboldt Bull Creek 121 Comment
  RSA20851  Veronica americana Carl B. Wolf 1937-6-18 8891 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  CDA6482  Veronica filiformis E. C. Whitney 1966-2-11 Humboldt 409 11th Street, Eureka. 0 Comment
  HSC21205  Veronica peregrina Anonymous 1957-4-27 126 Humboldt 1 mi. W of Honeydew Comment
  HSC11992  Veronica persica D. La Conte 1970-10-11 26 Humboldt Ploughed area Comment
  HSC21208  Veronica persica J. W. Johnson 1962-4-8 1207 Humboldt Arcata, Mad River Co. Park Comment
  HSC56064  Veronica serpyllifolia subsp. humifusa G. L. Clifton, Terry Griswold 1979-7-31 11708 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC99374  Veronica serpyllifolia subsp. humifusa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 23 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC82109  Vicia americana var. americana Thomas W. Nelson, Jane P. Nelson 1980-5-25 5252 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  JEPS80004  Vicia americana var. americana Joseph P. Tracy 1935-5-26 13908 Humboldt Iaqua 609 Comment
  UC1197478  Vicia americana var. americana Joseph P. Tracy 1939-4-18 16216 Humboldt between Miranda and Redway (South Fork of Eel River); North Coast Ranges, South Fork of Eel River 91 Comment
  UC1562619  Vicia tetrasperma Barbara Ertter with Thomas J. Delendick 1987-5-16 6912 Humboldt ca 8 mi e Arcata (Hwy 299 roadside, 9.5 mi w of Lord Ellis summit) Comment
  CAS-BOT-BC263951  Viola adunca L. B. Kildale 1926-3-26 1656 Humboldt Dillon Road between Beatrice and Field's Landing Comment
  HSC21756  Viola adunca D. E. Anderson 1961-10-1 1856 Humboldt E side of Freshwater Lagoon Comment
  HSC21761  Viola adunca R. D. Modafferi 1965-3-13 15 Humboldt 0.6 mi. N of Trinidad on Trinity St. Approx. 1/2 mi. W of 30 Comment
  UC1762356  Viola adunca Milo S. Baker 1926-4 5432 Humboldt Carlotta Comment
  RSA23651  Viola adunca Carl B. Wolf 1939-7-7 9518 Humboldt Orick to Weitchpec Road 10 miles from Martin's Ferry. 305 Comment
  RSA0006435  Viola californica Milo S. Baker 1946-6-14 11492 Humboldt South Fork Mt., on forest road in open spots in Fir forest, near Miller Spring and beyond. 1524 Comment
  UC1762513  Viola californica Milo S. Baker 11506 Humboldt South Fork Mountain, Lemonade Spring 1371 Comment
  HSC96078  Viola cuneata J. Breton, A. Livingston, Jennifer Lumbert 2005-6-24 2 Humboldt Horse Mtn. radio tower, 1/2 mile from intersection of three F.S. roads, 4.5 miles from Hwy. 299 on Titlow Hill Rd. 1445 Comment
  RSA218475  Viola glabella N. H. Russell 1960-6-9 60 -24 Humboldt Near Weott and Williams Grove, by Hwy 101. Comment
  RSA24186  Viola glabella Carl B. Wolf 1941-3-1 9980 Humboldt 0.2 mi NE of Strongs Station (on the Van Duzen River) on rd to Yaeger. 61 Comment
  UCR139069  Viola hallii E. Brower, S. Marubayashi, E. Perry 1997-5-10 054 Humboldt USFS Road 1, at mile marker 8 945 Comment
  HSC99353  Viola macloskeyi K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-21 2 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC275326  Viola palustris Joseph P. Tracy 1923-5-31 624 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC30717  Viola praemorsa subsp. linguifolia Harley P. Chandler June, 1901 1288 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 1097 Comment
  UC1198427  Viola sempervirens Joseph P. Tracy 1921-3-20 5424 Humboldt Blue Slide on Van Duzen River; Northern Coast Region, , Blue Slide 91 Comment
  UC183557  Viola sempervirens Joseph P. Tracy 1913-6-20 4221 Humboldt in valley of Van Duzen River (opposite Buck Mountain, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  HSC89549  Vulpia bromoides M. Roantree 1985-5-7 38 Humboldt W side of Trinidad Head, along trail. Comment
  HSC9836  Vulpia bromoides J. A. Waller 1965-5-16 47 Humboldt Open field near Big Lagoon. Comment
  HSC9838  Vulpia bromoides J. W. Johnson 1962-4-29 1303 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  RSA226620  Vulpia microstachys D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5056 Humboldt Along road from Redwood Creek to Hoopa, ca. 1-3 miles west of Hoopa. Comment
  SEINET202037 Image available Vulpia microstachys var. pauciflora Joeseph P. Tracy 14825 Humboldt French Camp Ridge 1067 Comment
  UCD94572  Vulpia microstachys var. pauciflora A. H. Murphy 1947-6-24 s.n. Humboldt Horse Mtn. 2 miles southeast of Berry's Summit on US Hwy 299. Comment
  HSC9925  Vulpia myuros D. C. Juve 1964-5-14 Humboldt Camp Tish-Tang, Campbell Cr. Ranger Station, Hwy. 96. Comment
  RSA183638  Vulpia myuros D. E. Anderson 1965-9-5 4088 Humboldt Along Mad River, ca. 3 miles south of Blue Lake. Comment
  UC196967  Vulpia myuros var. hirsuta Joseph P. Tracy 1915-5-23 4640 Humboldt Eureka; Northern Coast Region 0 Comment
  UC525655  Vulpia myuros var. hirsuta Joseph P. Tracy 1933-6-13 12598 Humboldt w of Hoopa (near summit on road to Bair's); Hoopa Mountain 1066 Comment
  HSC76267  Whipplea modesta Denis Kearns 1981-6-24 24 Humboldt Near Cedar Camp 1219 Comment
  JEPS25683  Whipplea modesta P. C. Hutchison 1961-5-22 2008 Humboldt on US 299 14.3 mi e Arcata junction with hiway US 101 Comment
  UC1198902  Whipplea modesta Joseph P. Tracy 1942-6-23 17232 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC1541295  Whipplea modesta H. E. and S. T. Parks May, 1930 753 Humboldt along roads adjacent to Van Duzen River Comment
  HSC44509  Wyethia angustifolia Brad Klipfel 1973-7-1 118 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA12521  Wyethia angustifolia C. B. Wolf 1934-7-3 5915 Humboldt 21 miles from Orick on road to Weitchpec. 152 Comment
  UC302182  Wyethia longicaulis Joseph P. Tracy 1926-6-20 7658 Humboldt Horse Mountain Northern Coast Ranges 1371 Comment
  HSC74331  Xerophyllum tenax Gail Newton 1980-6-16 147 Humboldt Near Monks Camp 1097 Comment
  LA17036  Xerophyllum tenax C. B. Wolf; 1934-6-30 5840 Humboldt 6 mi. from Shelter Cove on rd to Briceland near summit of grade Comment
  CAS-BOT-BC527082  Xerophyllum tenax Doris K. Kildale 1926-4-25 1814 Humboldt Hoopa Mountain 792 Comment
  HSC12700  Zeltnera muehlenbergii Jana Kattenhorn 1970-10-31 159 Humboldt Scotia Bluffs, N bank of Eel River Comment
  UC176186  Zigadenus micranthus var. micranthus Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3629 Humboldt Alton Northern Coast Region, Alton 30 Comment
  CAS-BOT-BC534318  Zigadenus venenosus var. venenosus Carl B. Wolf 1937-6-14 8817 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  HSC26270  Zigadenus venenosus var. venenosus Thomas W. Nelson 1971-5-31 450 Humboldt 915 Comment



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