Search Results — 2000 specimen records retrieved (1408 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
  HSC76295  Abies concolor Denis Kearns 1981-7-24 438 Humboldt Near Whiteys Peak. 1768 Comment
  UC1134161  Abies grandis G. T. Nordstrom 1937-7-1 1420 Humboldt 2.5 mi ne Orick; Orick Quad. 152 Comment
  CAS-BOT-BC73483  Abies magnifica Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mts. 1828 Comment
  HSC55137  Abies procera G. L. Clifton, Griswold 1979-8-1 12003 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CHSC32897  Abronia latifolia J. P. Smith; Advanced Taxonomy Class 1971-10-6 4946 Humboldt Dunes at the end of Murray Road in McKinleyville. Comment
  CAS-BOT-BC383851  Abronia latifolia Ira L. Wiggins 1932-7-19 5888 Humboldt Near Clam Beach, eight mi. north of Arcata Comment
  HSC16139  Abronia umbellata var. breviflora R. C. Hoover 1965-5-18 53 Humboldt Clam beach. Comment
  RSA186842  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile NW of Fieldbrook Comment
  RSA202444  Acaena novae-zelandiae D. W. Cooper 1967-6-30 s.n. Humboldt Ridge just SE of Forest Service Nursery, 2 miles SE of Grannell and 4 miles E of Hwy 101 Comment
  CAS-BOT-BC330541  Acer circinatum Doris K. Kildale 1927-5-13 3134 Humboldt Redwood Creek at Berry's 289 Comment
  UC902129  Acer glabrum var. glabrum Joseph P. Tracy 1942-6-23 17248 Humboldt 3 mi e Box Camp; Trinity Summit 1584 Comment
  HSC24100  Acer glabrum var. torreyi J. O. Sawyer 1971-6-14 2380 Humboldt E Fork of Horse Linto Creek at Grizzly Camp. 1341 Comment
  HSC57158  Acer glabrum var. torreyi Overton, Butler 1979-7-26 9957 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  RSA46728  Acer glabrum var. torreyi Doris K. Kildale 1938-1 15372 Humboldt Hoopa trip. Comment
  CAS-BOT-BC28587  Achillea millefolium David D. Keck 1938-8-5 4775 Humboldt Big Lagoon Comment
  HSC95116  Achillea millefolium Andrea Pickart 2002-7-3 153 Humboldt Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 24 Comment
  RSA298149  Achillea millefolium James Payne Smith 1973-5-26 6797 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SD41360  Achillea millefolium Edith A. Purer 1932-7-27 4133 Humboldt Samoa, near Arcata. Comment
  UC1196354  Achlys californica Joseph P. Tracy 1933-7-11 12692 Humboldt Grouse Mt. North Coast Ranges, Grouse Mt. 1524 Comment
  CAS-BOT-BC400024  Achlys triphylla Mrs. H. E. Wilder 1924-4-26 s.n. Humboldt Carlotta Comment
  HSC37361  Achlys triphylla Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 493 Humboldt Along Lost Man Creek. 38 Comment
  SBBG70036  Achlys triphylla R. Hartwell 1938-8-3 Humboldt Bull Crk Flat Redwood Grove Comment
  SEINET8072990  Achlys triphylla W. Roderick 1967-7-22 s.n. Humboldt Ca 5 miles E of Carlotta. 46 Comment
  SD42586  Achlys triphylla subsp. triphylla Carl B. Wolf 1937-6-19 8914 Humboldt North Coast Range, 7.2 miles above Bridgeville on grade to Dinsmores 455 Comment
  SEINET201040 Image available Achnatherum lemmonii J. P. Tracy 1913-5-4 4047 Humboldt Kneeland Prairie 762 Comment
  UC1103144  Achnatherum lemmonii J. P. Tracy 1903-5-23 1905 Humboldt Alder Point Eel River 91 Comment
  UC1145039  Achnatherum lemmonii Joseph P. Tracy 1938-6-17 15968 Humboldt on road from Bull Creek to Upper Mattole (Panther Gap); Panther Gap 822 Comment
  UC1145040  Achnatherum lemmonii Joseph P. Tracy 1950-6-15 18787 Humboldt 7 mi n Harris (Mail Ridge); Mail Ridge 1036 Comment
  SEINET11682291  Achnatherum lemmonii J. P. Tracy 1951-1 19563 Humboldt halfway between Snow Camp & Twin Lakes (at Preston's old gate near road) Comment
  UC668212  Achyrachaena mollis Joseph P. Tracy 1938-6-9 15889 Humboldt 2 mi w on top of ridge Harris 914 Comment
  HSC76515  Acmispon micranthus Denis Kearns 1981-7-8 160 Humboldt Near Bluff Creek 622 Comment
  HSC79425  Acmispon wrangelianus Kenneth Clark 1980-4-18 607 Humboldt Along access trail to Dead Man's Gulch. 114 Comment
  HSC98330  Acmispon wrangelianus A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek Jct., 100 yards W of Lindsey Creek on N bank. Comment
  HSC102039  Aconitum columbianum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 942 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC101545  Actaea rubra J. P. Smith, J. O. Sawyer 2009-8-11 12653 Humboldt Green Diamond Resource land along State Route 299. 762 Comment
  JEPS60386  Actaea rubra W. L. Jepson 1932-7-29 16445 Humboldt Glenbrook Van Duzen R., Grizzly Flat Comment
  OBI1123  Adiantum X tracyi Lawrence L. Kiefer 1964-5-19 1406 Humboldt Garberville, California one mile north of town, ravine just above Highway 101 305 Comment
  UC1239770  Adiantum X tracyi J. P. Tracy 1895-1 1683 Humboldt cultivated in Eureka (obtained above Pepperwood on Eel River) Comment
  HSC44330  Adiantum aleuticum Brad Klipfel 1975-6-17 679 Humboldt Horse Mtn. Comment
  UC1239781  Adiantum aleuticum Joseph P. Tracy 1926-6-20 7636 Humboldt Horse Mt; Northern Coast Ranges 1463 Comment
  HSC953  Adiantum aleuticum Gene S. Van Horn 1962-5-20 24 Humboldt 0.5 mi. S of large quarry, 200 yards S of Jacoby Creek 46 Comment
  HSC57973  Agastache urticifolia G. L. Clifton, Griswold 1979-7-31 11698 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC249533  Ageratina occidentalis Joseph P. Tracy 1922-7-15 6101 Humboldt gravel bar near Blue Lake; Northern Coast Ranges of California, Mad River 15 Comment
  UC1223124  Ageratina occidentalis Joseph P. Tracy 1950-7-31 19223 Humboldt Friday Ridge 1219 Comment
  UC165015  Ageratina occidentalis Joseph P. Tracy 1911-7-10 3557 Humboldt along Willow Creek ((tributary of Trinity River, Humboldt County), near its mouth); Northern Coast Ranges, Willow Creek 304 Comment
  UC34633  Ageratina occidentalis Chestnut and Drew Jul 13 1888-Jan 1 1900 Humboldt Jannigan's Comment
  SEINET11854879  Agoseris apargioides J. P. Tracy 1949-1 18441 Humboldt Near Box Camp. Trinity Summit, meadow at Box Camp 1463 Comment
  HSC32220  Agoseris grandiflora J. O. Sawyer 1970-6-24 2241 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC4595  Agoseris grandiflora J. W. Johnson 1961-8-17 1004 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC98959  Agoseris grandiflora Cara Witte 2008-7-28 956 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1592 Comment
  UC582751  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1936-6-17 14949 Humboldt nw slope Buck Mountain 792 Comment
  UC526887  Agrostis alba Joseph P. Tracy 1927-8-7 8326 Humboldt moist ground by Lack Pond; Northern Coast Ranges, Trinity River Valley 152 Comment
  SEINET4558396  Agrostis exarata J. P. Tracy 1902-1 1757 Humboldt Immediate vicinity of Eureka 152 Comment
  UC1145056  Agrostis exarata Joseph P. Tracy 1947-6-28 17749 Humboldt Larrabee Valley 731 Comment
  UC526886  Agrostis exarata Joseph P. Tracy 1927-6-19 8193 Humboldt Big Lagoon North Coast Region 6 Comment
  CAS-BOT-BC139497  Agrostis hallii Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UC1145078  Agrostis hallii Joseph P. Tracy 1938-7-4 15983 Humboldt valley South Yager Creek; Valley of South Yager Creek 762 Comment
  HSC98707  Agrostis idahoensis Cara Witte 2007-7-25 586 Humboldt Forest Service Road 5N04. 1/2 mile east of intersection with Forest Service Road 4N70. Grouse Mountain Lookout. 1583 Comment
  CAS-BOT-BC138875  Agrostis microphylla A. A. Heller 1923-7-8 13772 Humboldt Near Fortuna. Comment
  CAS-BOT-BC139126  Agrostis oregonensis Joseph P. Tracy 1925-7-5 7173 Humboldt Northern Coast Ranges. Bald Mountain. Near High Prairie. 1066 Comment
  HSC98624  Agrostis pallens Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UCD53535  Agrostis stolonifera R. Tofsrud 1948-9-1 s.n. Humboldt Salmon Creek Ranch, about 8 miles S. of Eureka. Comment
  HSC22532  Aira caryophyllea Dennis Anderson, J. P. Smith 1970-5-21 5085 Humboldt Scotia Bluffs, along N side of Eel River, in the vicinity of French Gulch Comment
  HSC65116  Aira caryophyllea J. P. Smith 1973-5-26 6877 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SBBG53062  Aira caryophyllea R. N. Philbrick, J. R. Haller 1976-6-25 2 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  UC526682  Aira caryophyllea Joseph P. Tracy 1933-6-13 12581 Humboldt near summit on road from Hoopa westward to Bair's; Hoopa Mountain 1066 Comment
  UC922024  Aira caryophyllea Joseph P. Tracy 1950-6-15 18814 Humboldt on Harris Rd. near Huestis Rock (6 mi se of Trinidad) 914 Comment
Read comments
Nov 27 2009
  CAS-BOT-BC138197  Aira praecox Joseph P. Tracy 1925-5-24 7013 Humboldt Northern Coast Ranges. Eureka. 60 Comment
  UC1198269  Alisma plantago-aquatica Joseph P. Tracy 1930-10-12 9214 Humboldt Alton to Fortuna (on gravel bars); Eel River 15 Comment
  HSC2883  Alisma triviale Paul Shields 1955-9-23 Humboldt 5 mi. SE of Arcata Comment
  CAS-BOT-BC460753  Allium amplectens Volney Rattan 1903-1-1 s.n. Humboldt Kneeland Prairie Comment
  HSC98054  Allium amplectens Cara Witte 2007-7-11 510 Humboldt National Forest 1. Approximately 1 mile south of intersection with 5N01. Near Spike Buck Mountain. 1591 Comment
  UC666887  Allium amplectens Joseph P. Tracy 1936-6-17 14975 Humboldt Little Van Duzen River at highway crossin Little Van Duzen River 713 Comment
  UC1198198  Allium bolanderi Joseph P. Tracy 1936-6-10 14923 Humboldt mountain slopes w mouth of South Fork of Trinity River; South Fork of Trinity River 304 Comment
  HSC57873  Allium campanulatum Overton, Butler 1979-7-31 11409 Humboldt Near Water Dog Lakes 1830 Comment
  UC1198200  Allium falcifolium Joseph P. Tracy 1933-7-25 12892 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC135844  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-27 5956 Humboldt Saddle between Mt. Lassic and peak to east. 1676 Comment
  HSC36496  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1895 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC71823  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5955 Humboldt Ridge S of Mt. Lassic (Signal Peak) 1524 Comment
  UC15006  Allium membranaceum Joseph Burtt Davy Jun 21 1899-Jun 23 1899 5820 Humboldt Trinity Summit Trail, Hoopa Valley, low down Hoopa Valley, Trinity Summit Trail Comment
  UC1222697  Allium unifolium Joseph P. Tracy 1950-6-25 18890 Humboldt Burr Valley Comment
  RSA20861  Allium unifolium Carl B. Wolf 1937-8-11 8900 Humboldt Fleener Creek, 0.5 mile south of Centerville. 46 Comment
  RSA75603  Allium unifolium Albert M. Vollmer, L. Beane 1951-6-11 138 Humboldt Horse Mountain-Shelter Cove Road. Comment
  HSC99505  Allium validum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 165 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
  UC199038  Allophyllum gilioides subsp. violaceum Chesnut and Drew 1888-7-23 Humboldt <Hy-Am-Pum> Comment
  HSC63153  Allotropa virgata M. A. Baker 1979-6-30 973 Humboldt 800 Comment
  HSC102584  Alnus incana subsp. tenuifolia M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1571 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC502990  Alnus incana subsp. tenuifolia Joseph P. Tracy 1927-8-22 8335 Humboldt in meadow near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA174010  Alnus rhombifolia R. F. Thorne 1957-9-2 18991 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  RSA46862  Alnus rhombifolia Doris K. Kildale 1926-9-9 2686 Humboldt Little Van Dusen, near bridge on Bridgeville, Low Gap Road. 640 Comment
  UC1222280  Alnus rhombifolia Joseph P. Tracy 1950-9-22 19375 Humboldt 8 mi below Orleans (near Slate Creek); Klamath River 121 Comment
  HSC13115  Alnus rubra C. Kline, D. Santana Oct 1970 31 Humboldt HSC Campus Comment
  HSC81811  Alnus rubra Kenneth Clark 1980-6-14 692 Humboldt N Fork of Dead Man's Gulch; throughout Shelter Cove 61 Comment
  HSC99493  Alnus rubra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 153 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
  OBI6019  Alnus rubra Carl B. Wolf 1931-8-28 2366 Humboldt Redwood hwy , 4-1/2 mi N of fortuna on the road to Eureka Comment
  SEINET187411  Alnus rubra H. E. Parks, ST Parks 1938-4-1 24126 Humboldt Spruce Cove Trinidad 61 Comment
  UC198600  Alnus rubra Joseph P. Tracy 1917-10-28 4859 Humboldt North Fork of Eel River Northern Coast Ranges, around Humboldt Bay 91 Comment
  UC212982  Alnus viridis subsp. sinuata Joseph P. Tracy 1919-9-18 5241 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  SEINET201030  Alopecurus aequalis J. P. Tracy 1923-6-27 6381 Humboldt Trinity River Valley near the S Fork shores of Lack Pond 183 Comment
  CAS-BOT-BC138016  Alopecurus geniculatus Joseph P. Tracy 1933-7-20 12802 Humboldt North Coast Ranges. Arcata Bottom. 15 Comment
  UC1100223  Alopecurus geniculatus Malcolm A. Nobs and S. Galen Smith 1949-8-3 1164 Humboldt 1 mi. s. Fields Landing; Eel R. Valley Comment
  UC1103313  Alopecurus geniculatus Joseph P. Tracy 1942-6-2 17091 Humboldt at R.R. trestle Loleta 9 Comment
  UC677600  Alopecurus geniculatus A. A. Beetle with Stebbins and Tracy 1942-6-2 3458 Humboldt s. of Eureka (Loleta Swamp); Loleta Swamp Comment
  UC573793  Alopecurus pratensis H. L. Person 1932-5-11 Humboldt Redwood Hwy. between Arcata and Eureka; Eureka Quad. 0 Comment
  SEINET10473459  Ambrosia Mary Susan Taylor 1990-8-22 Taylor 6076 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  CAS-BOT-BC13702  Ambrosia chamissonis Ira L. Wiggins 1940-7-10 9486 Humboldt Big Lagoon Comment
  HSC2176  Ambrosia chamissonis H. E. Parks Aug 1941 24181 Humboldt Big Lagoon Comment
  HSC90391  Ambrosia chamissonis Jean Hanson 1980-8-28 116 Humboldt In Humboldt Bay, city of Eureka; Indian (Gunther) Island, W end of the island Comment
  POM117576  Amelanchier pallida Marcus E. Jones 1924-4-28 s.n. Humboldt Sagtorville Comment
  UC1198747  Amelanchier utahensis Joseph P. Tracy 1947-8-24 17900 Humboldt at edges Box Camp Meadow (near Box Camp); Trinity Summit 1463 Comment
  SACT000320  Ammophila arenaria D. Shillingbury 1963-5-11 Humboldt Coastal strand Comment
  HSC26473  Amsinckia spectabilis T. O. Osborne 1970-4-8 15 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  UC562471  Anagallis arvensis Joseph P. Tracy 1932-5-10 9936 Humboldt Bear R. Ridge Northern Coast Ranges, Bear R. Ridge 609 Comment
  HSC28135  Anagallis arvensis J. D. Ackerman 1973-5-6 47 Humboldt Redcrest Comment
  HSC89589  Anagallis arvensis M. Roantree 1985-5-24 54 Humboldt NW side of Trinidad Head, along trail Comment
  UC582520  Anaphalis margaritacea Joseph P. Tracy 1934-8-31 13649 Humboldt Kneeland Prairie 762 Comment
  HSC95077  Anaphalis margaritacea Andrea Pickart 2002-7-3 163 Humboldt S side Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 24 Comment
  SEINET10475558  Anaphalis margaritacea Mary Susan Taylor 1975-4-12 Taylor 466 Humboldt Ca. 2000 yds E of Hwy 101, in Orick, by railroad tracks. Comment
  SEINET2030725 Image available Anaphalis margaritacea H. E. Parks, S. T. Parks 24237 Humboldt Along highway, Stone Lagoon. Comment
  SBBG71821  Anemone deltoidea S. W. Hutchinson -Apr-1927 899 Humboldt Eureka 8 Comment
  UC1196188  Anemone deltoidea H. E. Parks and Joseph P. Tracy 1931-5-31 9540 Humboldt Lawrence Creek; North Coast Ranges; Lawrence Creek 457 Comment
  UC634952  Anemone deltoidea H. L. Mason 1929-5-9 5280 Humboldt Bull Creek Flat Comment
  UC1197383  Angelica genuflexa Joseph P. Tracy 1937-7-17 15442 Humboldt 2 mi s of Fields Landing (near Still Ranch); Northern Coast Region 6 Comment
  UC1087231  Angelica hendersonii Peter H. Raven, Richard Snow 1958-7-21 13660 Humboldt Cape Mendocino Comment
  UC562549  Angelica hendersonii Joseph P. Tracy 1930-7-21 8896 Humboldt Cape Mendocino, south of point of the Cape Cape Mendocino 3 Comment
  UC1197376  Angelica hendersonii H. E. Parks and Joseph P. Tracy 1924-8-3 6740 Humboldt Northern Coast Ranges, Big Lagoon Big Lagoon; Northern Coast Ranges, Big Lagoon 152 Comment
  HSC99547  Angelica tomentosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 212 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1051577  Angelica tomentosa Joseph P. Tracy 1948-9-5 18185 Humboldt 3 mi s of Grizzly Camp (Trinity Summit); Trinity Summit 1524 Comment
  UC183690  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
  HSC70410  Anisocarpus madioides M. A. Baker 1980-6-7 1831 Humboldt Near Ammon Creek 732 Comment
  UC175968  Anisocarpus madioides Joseph P. Tracy 1911-6-4 3213 Humboldt 5 mi from coast (along Little River); Northern Coast Region, Little River 121 Comment
  CHSC105172  Antennaria suffrutescens B. Castro; L. P. Janeway 1996-8-3 704 Humboldt Six Rivers NF, near Horse Mtn. Along Titlow Hill Rd (Rd #1), on flat ridgetop. 1469 Comment
  HSC39226  Antennaria suffrutescens D. E. Anderson, J. P. Smith 1971-7-6 1287 Humboldt Horse Mtn. Comment
  SD53154  Anthoxanthum occidentale Darley F. Howe 1962-5-22 3304 Humboldt 3 miles east of Orick on Bald Mt. road 395 Comment
  CAS-BOT-BC137738  Anthoxanthum odoratum David D. Keck 1948-7-1 5968 Humboldt Trinidad. Comment
  HSC45641  Anthoxanthum odoratum Diane L. Reed 1978-4-22 33 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC8947  Anthoxanthum odoratum T. L. Ackerman 1964-4-12 34 Humboldt One mi. up a logging road N from an elementary school near Freshwater Corners Comment
  HSC8950  Anthoxanthum odoratum D. B. Bader 1963-4-1 24 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  RSA129295  Anthoxanthum odoratum H. S. Yates 1936-6-18 5737 Humboldt 2 miles N. of Big Lagoon. Rocky Pt. 30 Comment
  UC1100218  Anthoxanthum odoratum Malcolm A. Nobs, S. Galen Smith 1949-8-3 1208 Humboldt 2 mi n of Eureka (bordering Humboldt Bay); Humboldt Bay Comment
  UCD56238  Anthoxanthum odoratum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1208 Humboldt ca. 2 miles north of Eureka, Humboldt Bay. Comment
  CDA20237  Antirrhinum vexillo-calyculatum subsp. breweri Humboldt Ag Comm 2003-11-18 PDR 1417772 Humboldt North Coast Ranges; Hwy 101 at MM 2.75 near Garberville. 0 Comment
  JEPS5353  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1933-8-30 13004 Humboldt Horse Mountain; Northern Coast Ranges 1066 Comment
  UC204117  Aphanes occidentalis Joseph P. Tracy 1918-5-1 4903 Humboldt Kneeland Prairie Northern Coast Ranges (towards McBrides) 762 Comment
  HSC58041  Apocynum androsaemifolium Gilbert Muth 1979-8-1 11887 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC99562  Apocynum androsaemifolium K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 227 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
  UC213319  Apocynum androsaemifolium Joseph P. Tracy 1919-9-23 5280 1/2 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  SD51267  Apocynum androsaemifolium Darley F. Howe 1961-8-2 3117 Humboldt 23.5 miles east of Orick on Bald Mountain Road 915 Comment
  UCSB25082  Apocynum cannabinum 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
  UC154172  Apocynum cannabinum Joseph Burtt Davy and Walter C. Blasdale 1899-6-29 5896 Humboldt near Requa Comment
  UC1196202  Aquilegia formosa Joseph P. Tracy 1926-5-9 7453 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  HSC100612  Aquilegia truncata Carl C. Marshall Jun 1886 121 Humboldt Everywhere, Humboldt Bay. Comment
  HSC73533  Arabis glabra Gail Newton 1980-7-14 1464 Humboldt Near Last Chance Ridge 1219 Comment
  UC492235  Arabis glabra Joseph P. Tracy 1932-7-11 10423 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC100716  Arabis holboellii Carl C. Marshall Jun 1886 309 Humboldt Trinity Summit. Comment
  HSC57630  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-7-25 10778 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC57667  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-7-25 10851 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC54601  Arbutus menziesii Overton, Butler 1979-7-24 9683 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  RSA167438  Arbutus menziesii Joseph P. Tracy 1951-5-20 19401 Humboldt Near Ashfield Ridge. Comment
  UC1193365  Arbutus menziesii P. Zinke 1950-8-14 154 Humboldt 3 mi e of Garberville (Little Buck Mountains, Outside National Forest); Little Buck Mountains, Outside National Forest 609 Comment
  UC249508  Arbutus menziesii Joseph P. Tracy 1922-4-30 6004 Humboldt Trinity River Valley near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  JEPS120247  Arceuthobium campylopodum Talitha Derksen and Keli McElroy 2012-8-2 Humboldt East slope of Blake Mountain, north end South Fork Mountain, 5 mi. west of Hyampom Comment
  JEPS44156  Arctium minus W. L. Jepson 1936-8-12 17888 Humboldt Philipsville South Fork Eel River Comment
  UC180210  Arctium minus Joseph P. Tracy 1914-10-4 4631 Humboldt Table Bluff Northern Coast, Humboldt Bay 0 Comment
  UC1196872  Arctostaphylos Joseph P. Tracy 1926-6-6 7568 Humboldt road w from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  UC1225932  Arctostaphylos X media Joseph P. Tracy 1945-3-30 17501 Humboldt Eureka 45 Comment
  UCR32088  Arctostaphylos canescens David J. Keil 1983-7-2 17321 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  CAS-BOT-BC23741  Arctostaphylos columbiana C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny Comment
  CAS-BOT-BC23746  Arctostaphylos columbiana Doris K. Kildale 1926-6-18 2396 Humboldt Gold Bluffs on coast. Comment
  CAS-BOT-BC23797  Arctostaphylos columbiana H. E. Parks 1931-12-1 4950 Humboldt Hobson's, Trinidad 60 Comment
  CHSC63763  Arctostaphylos columbiana Walter Knight; Irja Knight 1988-9-5 6363 Humboldt Bald Hill Road about 21.5 miles from U. S. 101 en route to Hoopa. 929 Comment
  RSA622684  Arctostaphylos columbiana Jon E. Keeley 1996-10-13 27762 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  UC176958  Arctostaphylos columbiana Joseph P. Tracy 1912-7-25 3816 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC314644  Arctostaphylos columbiana Joseph P. Tracy 1924-3-9 6606 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC585911  Arctostaphylos columbiana Joseph P. Tracy 1927-8-14 8331 Humboldt Big Lagoon 152 Comment
  UC585921  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15170 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UCD51493  Arctostaphylos columbiana B. L. Kay 1955-3-20 Humboldt 5 miles west of Garberville. Comment
  RSA152310  Arctostaphylos columbiana var. columbiana Joseph P. Tracy 1945-5-15 17510 Humboldt Kneeland Prairie. 671 Comment
  RSA254754  Arctostaphylos columbiana var. columbiana Thomas W. Nelson 1975-3-20 1750 Humboldt Along Kneeland Rd. just south of its junction with Maple Creek Rd. Losey property. 671 Comment
  RSA70856  Arctostaphylos columbiana var. tracyi J. E. Adams 1935-5-12 1045 Humboldt Patrick's Pt. Comment
  UCD50873  Arctostaphylos glandulosa Roman Gankin 1965-8-5 545 Humboldt 6.5 miles west on Kings Mountain Road, Pacific Range Wilderness Area. Comment
  HSC102137  Arctostaphylos glandulosa subsp. glandulosa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1041 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  OBI14679  Arctostaphylos hispidula Carl B. Wolf 1937-8-13 9226 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New Road towards Trinity summit 1219 Comment
  RSA632795  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27774 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  HSC100468  Arctostaphylos manzanita Carl C. Marshall Apr 1886 397 Humboldt Hoopa Valley. Comment
  UCD52079  Arctostaphylos manzanita Harold E. Parks; Joseph P. Tracy 1936-5-16 11304 Humboldt Near Gasquet; mountain slopes; north side of Middle Fork of Smith River; on old Gasquet Toll Road. 609 Comment
  CAS-BOT-BC24371  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-3-10 2993 Humboldt Dobbyns Creek. Comment
  UC585958  Arctostaphylos nevadensis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8944 Humboldt openings in fir forest near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC99104  Arctostaphylos nevadensis subsp. nevadensis C. Witte 2007-5-17 29 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  HSC33154  Arctostaphylos patula Thomas W. Nelson, Jane Cole, Brad Klipfel 1974-5-8 1242 Humboldt Horse Mtn. Area, SW of the microwave tower 1220 Comment
  UCD53433  Arctostaphylos patula A. E. Wieslander 1931-5-19 199 Humboldt Near Orleans. Comment
  CAS-BOT-BC43979  Arctostaphylos uva-ursi Greg de Nevers 2001-4-18 12251 Humboldt Lanphere-Christenson dunes, near Arcata. 9 Comment
  CAS-BOT-BC46795  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17505 Humboldt Eureka 45 Comment
  CAS-BOT-BC47214  Arctostaphylos uva-ursi D. E. Breedlove 1962-6-7 3034 Humboldt 1.5 mi. s. of Samoa on peninsula on western side of Humboldt Bay. Comment
  HSC28130  Arctostaphylos uva-ursi J. D. Ackerman, A. M. Montalvo 1973-3-27 42 Humboldt 1.5 mi. N of Manila Comment
  UC180220  Arctostaphylos uva-ursi Joseph P. Tracy 1914-8-30 4594 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  UC527561  Arctostaphylos uva-ursi C. B. Wolf 1931-8-30 2374 Humboldt Samoa Humboldt Bay 7 Comment
  HSC67134  Arctostaphylos viscida J. P. Smith, J. O. Sawyer 1973-5-12 6696 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC526231  Arctotheca calendula G. D. Barbe 1988-7-18 4293 Humboldt Larry Pries dairy, 3.4 mi W of Main St., on Centerville Beach Rd, Ferndale Comment
  RSA89768  Armeria maritima subsp. californica P. A. Munz 1954-7-25 19874 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  UC1716064  Armeria maritima subsp. californica M. S. Taylor 1990-8-22 6083 Humboldt Samoa Recreation Area, Samoa Peninsula, Staging Area Eureka Comment
  HSC4712  Arnica cernua D. E. Anderson 1965-6-1 3753 Humboldt Horse Mountain. 1220 Comment
  UC129315  Arnica cernua Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5645 Humboldt Hoopa Mt. Comment
  UC275462  Arnica cernua Joseph P. Tracy 1925-6-7 7057 Humboldt near Ruby Creek; Northern Coast Ranges, Willow Creek Canyon 609 Comment
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Feb 27 2007
  UC302176  Arnica cernua Joseph P. Tracy 1926-5-2 7449 Humboldt near Ruby Creek; Northern Coast Ranges, Willow Creek Canyon 609 Comment
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Feb 27 2007
  HSC34913  Arnica cordifolia Thomas W. Nelson, Jane P. Nelson 1975-5-24 1852 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC64162  Arnica discoidea J. O. Sawyer, K. A. Sawyer 1979-6-24 3406 Humboldt Slopes alongside Aikens Creek. 366 Comment
  HSC64195  Arnica discoidea J. O. Sawyer, M. A. Erickson 1979-6-23 3373 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC98683  Arnica discoidea Cara Witte 2008-7-11 882 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  JEPS20983  Arnica discoidea Joseph P. Tracy 1935-7-23 14154 Humboldt Brett Hole (lower end) Trinity Summit 1584 Comment
  RSA167207  Arnica discoidea Joseph P. Tracy 1950-8-8 19273 Humboldt 2 miles E of town, on trail to Croghan Hole, Trinity Summit, near Box Camp. 1524 Comment
  UC1199250  Arnica discoidea Joseph P. Tracy 1919-5-31 5170 Humboldt near, at w side of Trinity River Willow Creek; Trinity River 182 Comment
  JEPS20976  Arnica latifolia Mrs. L. B. Kildale 1926-4-25 Humboldt Sugar Bowl Mt. Trinity River, Sugar Bowl Mt. 457 Comment
  HSC8991  Arrhenatherum elatius D. J. McVean 1965-5-18 77 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  CAS-BOT-BC84836  Artemisia douglasiana Doris K. Kildale 1926-8-8 2472 Humboldt Dyerville Bridge 45 Comment
  HSC97439  Artemisia douglasiana Ivy Watson 2008-9-17 22 Humboldt Mad River Park on West End Rd. beside pumping station 12 Comment
  CAS-BOT-BC90872  Artemisia pycnocephala Tom Craig 1941-6-29 s.n. Humboldt Samoa Comment
  HSC90475  Artemisia pycnocephala Jean Hanson 1980-8-28 123 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka. W end of island between dikes. Comment
  CAS-BOT-BC97240  Artemisia suksdorfii H. E. Parks 1940-5-1 24178 Humboldt Little River Comment
  CHSC1538  Aruncus dioicus var. pubescens 1936-6-15 Humboldt This specimen collected at siltcoos Lake in Oregon. Comment
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Jan 8 2007
  RSA20964  Aruncus sylvester Carl B. Wolf 1937-9-13 9339 Humboldt N coast range, E Fork of Willow Creek at Forest Service Camp. 457 Comment
  RSA416090  Asarum caudatum Barbara Kelly 1977-4-23 307 Humboldt 2.5 miles South of Shelter Cove Road. South fork of Bear Creek at Wailaki Campground. 561 Comment
  UC302986  Asarum caudatum Joseph P. Tracy 1926-5-22 7512 Humboldt Prairie Creek 152 Comment
  HSC47656  Asarum caudatum Sheila Logan 1978-4-10 181 Humboldt Arcata Community Forest, near PSW Experimental Lab Comment
  UC1198116  Asarum caudatum Joseph P. Tracy 1913-6-25 4343 Humboldt Dinsmore's Ranch; in valley of Van Duzen River opposite Buck Mountain 762 Comment
  UCD15240  Asarum caudatum Glen Greenleaf 1974-4-10 13 Humboldt along highway 36, 10.8 miles east of Hydesville on south side of road. 140 Comment
  RSA46484  Asclepias cordifolia Doris K. Kildale 1925-7-2 963 Humboldt Bug creek 915 Comment
  UC1197610  Asclepias cordifolia Joseph P. Tracy 1935-7-31 14392 Humboldt ridge connecting Trinity Summit with Salmon Summit; Devil's Backbone 1676 Comment
  JEPS49948  Asclepias fascicularis Mary H. Manning 1900-1 Humboldt near Hupa Comment
  UC449996  Asclepias speciosa Mrs. M. H. Manning 1900-6 Humboldt Hupa Valley Comment
  CDA30679  Aster chilensis M. K. Beyers, I. Shepardson 2009-9-13 252 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  RSA33737  Aster chilensis F. W. Peirson 1923-7-11 3882 Humboldt 7 miles north of Arcata. Comment
  UCR51819  Aster occidentalis var. occidentalis Thomas W. Nelson, J. Nelson 1977-9-3 3726 Humboldt Along creek draining north from pond above Alder Spring 1445 Comment
  POM305534  Athyrium filix-femina subsp. cyclosorum Henry J. Ramsey, Henry J. Ramsey 1939-10-13 837 Humboldt Mountains, Hwy 299. Comment
  UC1198298  Athysanus pusillus Joseph P. Tracy 1927-3-27 7848 Humboldt Trinity River Valley near the South Fork; North Coast Ranges, Trinity River Valley 182 Comment
  UC1191297  Atriplex patula Malcolm A. Nobs, S. Galen Smith 1949-8-11 1341 Humboldt eastern shore Stone Lagoon; eastern shore Stone Lagoon Comment
  HSC4339  Atriplex prostrata Larry Berti 1968-10-26 Humboldt Big Lagoon County Park, SW corner Comment
  HSC9031  Avena barbata Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  UC1103328  Avena barbata Joseph P. Tracy 1923-5-20 6217 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC181262  Avena barbata Joseph P. Tracy 1913-6-13 4114 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  HSC9007  Avena fatua Frances Oldridge 1945-1 Humboldt Fortuna Comment
  HSC9032  Avena sativa E. W. Styskel 1964-4-28 76 Humboldt End of Davis St. at the edge of Eel River in Rio Dell Comment
  UCD56094  Avena strigosa Ma. Jaegar 1926-6-8 415 3d Humboldt Happy Valley. Comment
  HSC36924  Baccharis douglasii Thomas W. Nelson, W. E. Pratt 1975-8-10 2241 Humboldt Along Shively Rd. N of Shively Comment
  CAS-BOT-BC98029  Baccharis pilularis Elmer I. Applegate 1922-9-19 3451 Humboldt Along the coast below Eureka Comment
  CAS-BOT-BC98032  Baccharis pilularis Doris K. Kildale 1926-11-27 2845 Humboldt Alton Bluff 30 Comment
  HSC100425  Baccharis pilularis Carl C. Marshall Feb 1887 391 Humboldt Hillsides near the coast. Comment
  CHSC19741  Baccharis pilularis subsp. consanguinea Gary J. Stebbins 1970-2-2 7 Humboldt Along U. S. 101 1.5 miles north of Patricks Point State Park. 83 Comment
  HSC26396  Baccharis pilularis subsp. pilularis T. O. Osborne 1970-9-16 30 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC57311  Barbarea verna Terry Griswold, Marvin Butler 1979-7-10 6301 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC7002  Barbarea verna W. F. Nickel 1965-4-22 Humboldt HSU campus between the Wildlife and Biological Science buildings Comment
  RSA10095  Beckmannia syzigachne Joseph P. Tracy 1928-6-24 8472 Humboldt Valley of south Yager Creek Comment
  CHSC68559  Bellardia trixago Vernon H. Oswald 1997-4-29 8361 Humboldt Somoa Dunes Recreation Area at the south end of the North Spit separating Hunbolt Bay from the ocean. Near seal level. Coastal Dunes. Comment
  HSC20475  Bellardia trixago R. T. Forester 1963-5-6 46 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  OBI37802  Bellardia viscosa David J. Keil 1983-7-1 17282 Humboldt 1 mi NW of Petrolia Fire Station along Mattole Rd Comment
  UC34578  Bellis perennis Chesnut and Drew 1888-7-8 Humboldt Arcata Comment
  HSC34654  Bellis perennis A. M. Montalvo 1975-4-10 206 Humboldt Vacant lot bordering HSU campus between Union St. and A St. 15 Comment
  JEPS8443  Bensoniella oregona Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3416 Humboldt edge of meadow at Snow Camp High Prairie (ridge between Mad River and Redwood Creek (Bald Mountain ridge)); btw Mad River and Redwood Crk (Bald Mountain), High Prairie 1432 Comment
  BLMAR689  Berberis aquifolium Jennifer Wheeler 2012-5-9 689 Humboldt Lacks Creek, West side on Barnum 762 Comment
  HSC57111  Berberis aquifolium var. aquifolium Overton, Butler 1979-7-25 9852 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC24105  Berberis aquifolium var. repens J. O. Sawyer 1971-6-17 2388 Humboldt Along trail slopes above Horse Linto Creek 1341 Comment
  UC35055  Berberis nervosa Chestnut and Drew 1888-7-11 Humboldt Jarnigan's Comment
  HSC35712  Berberis pinnata Thomas W. Nelson 1975-10-12 2236 Humboldt McKeown Ranch, N of Dinsmore Comment
  RSA46905  Berberis pinnata Doris K. Kildale 1926-3-21 1591 Humboldt McDowell Butte, Kneeland. 915 Comment
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Jul 25 2012
  CAS-BOT-BC412985  Bistorta bistortoides Doris Kildale 1931-5-10 10678 Humboldt Snow Camp Comment
  CAS-BOT-BC66277  Blechnum spicant Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  POM319594  Blechnum spicant Patricia Wilder 1968-8-21 4382 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  POM87950  Blechnum spicant L. R. Abrams, R. Bacigalupi 8299 Humboldt Near northern county line Comment
  SEINET11716007  Blechnum spicant D. E. Boufford 1973-1 11067 Humboldt Eureka, Sequoia Park Comment
  CAS-BOT-BC15801  Boechera acutina Joseph Prince Tracy 1932-7-11 10396 Humboldt Klamath Mountains. Trinity Summit. At Corral Prairie. 1524 Comment
  HSC31636  Borago officinalis Glenn McGourty 1974-6-1 85 Humboldt Comment
  HSC70782  Boschniakia strobilacea Gail Newton 1980-7-24 1768 Humboldt Near Somes Mtn. 1615 Comment
  SEINET5766918  Boschniakia strobilacea C. Young 1967-5-15 s.n. Humboldt Orleans Comment
  UC955469  Botrychium multifidum Milo S. Baker 1923-7-15 13 Humboldt Eureka Comment
  UC1198848  Boykinia major E. Ethel Tracy 1919-8-1 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1524 Comment
  CAS-BOT-BC420271  Boykinia occidentalis Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  HSC96479  Boykinia occidentalis Gordon Leppig 1997-6-19 441 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  JEPS49652  Boykinia occidentalis Harley P. Chandler June, 1901 1501 Humboldt Klamath River; North Coast Ranges, Klamath River 426 Comment
  HSC37950  Brassica nigra Peter Sorensen 1976-6-16 Humboldt Woodley Island, Humboldt Bay Comment
  UC1198285  Brassica nigra Joseph P. Tracy 1933-8-22 12974 Humboldt Northern Coast Ranges, Eureka. 0 Comment
  HSC5216  Brickellia californica W. L. Jepson 1936-8-8 17865 Humboldt South Fork of Eel River, Richardson Grove Comment
  RSA47155  Brickellia californica Doris K. Kildale 1926-8-29 2593 Humboldt Van Duzen River at Strong's Station Comment
  JEPS18754  Brickellia greenei Joseph P. Tracy 1935-7-30 14361 Humboldt Salmon Summit 1767 Comment
  CAS-BOT-BC145429  Briza maxima Joseph P. Tracy 1930-7-6 8848 Humboldt Iaqua. 762 Comment
  UC1103342  Briza minor Joseph P. Tracy 1919-5-31 5141 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  HSC38619  Brodiaea elegans subsp. elegans D. E. Anderson, J. P. Smith 1971-6-21 1107 Humboldt 16.2 miles E of Garberville on road to Alderpoint. Comment
  UC1197741  Brodiaea elegans subsp. elegans Joseph P. Tracy 1930-6-21 8776 Humboldt Larrabee Valley 731 Comment
  HSC35968  Brodiaea stellaris Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-21 1952 Humboldt Hwy. 36, 5 mi. E of Bridgeville Comment
  JEPS513  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1927-6-8 8111 Humboldt Trinidad 3 Comment
  UC1197735  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1936-6-9 14893 Humboldt s of point of Cape; Cape Mendocino 3 Comment
  CAS-BOT-BC144345  Bromus Doris K. Kildale 1926-5-16 2009 Humboldt South Fork of Eel River. Miranda. Comment
  RSA10079  Bromus carinatus Joseph P. Tracy 1926-5-2 7424 Humboldt Trinity River Valley, near the south fork. Comment
  UCD59273  Bromus carinatus var. carinatus A. H. Murphy 1951-3-1 6 Humboldt 2 miles north of Petrolia. Comment
  SEINET201048 Image available Bromus carinatus var. marginatus Harold E. Parks, Joseph P. Tracy 1935-6-8 11268 Humboldt Trinidad Comment
  UCD59205  Bromus carinatus var. marginatus A. H. Shunk 1923-7-12 24 Humboldt Briceland. Comment
  UC53638  Bromus carinatus var. maritimus J. Burtt Davy 1899-7-30 6179 Humboldt opposite Eureka; North Coast Ranges Comment
  CAS-BOT-BC155993  Bromus diandrus Doris K. Kildale 1926-5-2 1902 a Humboldt Willows Creek Flat. 152 Comment
  HSC9297  Bromus diandrus J. R. Eichelberger 1964-5-3 46 Humboldt 2 mi. N of Fieldbrook Comment
  SEINET4391136  Bromus diandrus W. D. Billings 1940-6-22 1343 Humboldt 0.5 mile N of Trinidad Comment
  UC1103365  Bromus hordeaceus Joseph P. Tracy 1905-6-4 2187 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UC526925  Bromus hordeaceus Joseph P. Tracy 1933-6-25 12622 Humboldt 2 to 5 mi e of South Fork Eel River (along Eel River, Camp Grant); Eel River, Camp Grant 45 Comment
  HSC2600  Bromus inermis William J. Ferlatte, B. D. Rogers 1966-8-15 3123 Humboldt 6 mi. E of Korbel; Cutoff Red wood Comment
  UC1103351  Bromus tectorum Joseph P. Tracy 1926-5-2 7423 Humboldt near the South Fork (Northern Coast Ranges, Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC185523  Bromus vulgaris W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River. Comment
  HSC48989  Bromus vulgaris M. A. Baker 1979-5-25 760 Humboldt Comment
  HSC72631  Bromus vulgaris J. P. Smith 1977-7-3 9252 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  SEINET10524095  Bromus vulgaris Harley P. Chandler Chandler 1177 Humboldt 30 Comment
  UCR93380  Buddleja davidii Kathy Harper, Dane Karr 1994-6-14 s.n. Humboldt North Coast Range, 11-12 mi. north of Willow Creek on State Hwy 96, c. 0.25 mi. north of 'vista point' along Trinity River 30 Comment
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Apr 27 2007
  CAS-BOT-BC36855  Cakile edentula var. edentula Alice Eastwood; John Thomas Howell 1934-4-11 1323 Humboldt Trinidad. Comment
  HSC6609  Cakile maritima J. W. Johnson 1962-4-29 1299 Humboldt W.M. Lanphere Farm, Samoa Peninsula, 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
  SD112830  Calamagrostis canadensis D. F. Howe 1961-8-1 3103 Humboldt 6 miles north of Trinidad on Highway 101 Comment
  HSC74073  Calamagrostis foliosa Joyce Walker 1980-8-15 Humboldt Fiddle Prairie 829 Comment
  HSC97775  Calamagrostis foliosa C. Gillevan, C. Sander 2003-8-13 330 Humboldt Cliffs above Randal Creek, Cooksie Creek, and Gitchel Creek, in the King Range Area 9 Comment
  CAS-BOT-BC185239  Calamagrostis koelerioides Joseph P. Tracy 1935-7-24 14192 Humboldt Trinity Summit. Near Ranger Station. 1828 Comment
  HSC74184  Calamagrostis koelerioides M. A. Baker 1980-7-23 3140 Humboldt Near Orleans Mtn. 1859 Comment
  CAS-BOT-BC185182  Calamagrostis nutkaensis David D. Keck 1948-7-1 5976 Humboldt Northeast end of Big Lagood. Comment
  RSA53787  Callitriche heterophylla H. M. Pollard 1946-8-13 s.n. Humboldt Pond near Harley Place. Orleans region. Comment
  UC1103693  Callitriche heterophylla var. bolanderi Joseph P. Tracy 1936-8-17 15150 Humboldt 2.5 mi s Field's Landing (near Still Ranch) 6 Comment
  UC198582  Callitriche marginata Joseph P. Tracy 1917-6-17 4823 Humboldt Salmon Creek Valley Northern Coast Ranges, Humboldt Bay (around Humboldt Bay) 30 Comment
  HSC3803  Callitriche trochlearis D. B. Bader 1963-4-1 42 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  HSC1286  Calocedrus decurrens Elrid H. Spinas 1948-5-22 39 Humboldt Horse Mtn. Comment
  UC180215  Calochortus amabilis Joseph P. Tracy 1914-5-14 4422 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC48760  Calochortus coeruleus Brad Klipfel 1973-6-10 74 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS17771  Calochortus coeruleus W. L. Jepson Jul 16 1902-Jul 23 1902 2035 Humboldt Trinity Summit 2133 Comment
  CAS-BOT-BC488620  Calochortus elegans var. nanus Doris Kildale Gillespie 1931-6-7 10586 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC36504  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1887 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  UC659312  Calochortus tolmiei Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2614 Humboldt near Eureka; Larrabee Valley 762 Comment
  RSA54144  Calycadenia ciliosa H. M. Pollard 1946-8-28 s.n. Humboldt Near Summit of Orleans Mt. 1829 Comment
  HSC16565  Calypso bulbosa Eldrid H. Spinas 1948-6-16 70 Humboldt Horse Mtn. Comment
  RSA256574  Calypso bulbosa J. D. Ackerman 1975-5-3 436 Humboldt 1 mile east of Blue Lake, along hwy. 299 T6N R2E S29 Comment
  SEINET3889828  Calypso bulbosa Rick Lundquist 1979-1 Humboldt Comment
  HSC38746  Calypso bulbosa var. occidentalis J. D. Ackerman 1976-4-27 754 Humboldt 10 mi. E of Blue Lake on road to Maple Creek Comment
  HSC48792  Calystegia occidentalis subsp. occidentalis Brad Klipfel 1975-6-17 660 Humboldt 2 mi. E of Titlow Hill Rd. along Hwy. 299 Comment
  CHSC68784  Calystegia sepium subsp. limnophila Vernon Oswald 1997-6-5 8530 Humboldt Arcata Oxidation Ponds on South G St., south of Hwy 255. 6 Comment
  HSC44614  Calystegia soldanella Laura Witherspoon 1977-5-25 Humboldt Manila Comment
  UC584209  Calystegia soldanella David D. Keck and J. Clausen 1935-6-16 3384 Humboldt mouth of Little River Comment
  RSA232656  Calystegia soldanella Larry E. DeBuhr, Gary D. Wallace 1972-5-23 650 Humboldt Fresh Water Lagoon, 2.5 miles south of Orick on Hwy. 101. Comment
  RSA296727  Calystegia soldanella J. P. Smith, T. W. Nelson, Smith 1977-6-30 9204 Humboldt Samoa Peninsula just east of the drag strip. Comment
  HSC97566  Camassia quamash subsp. breviflora Cara Witte 2008-5-31 150 Humboldt Brays Opening on National Forest 1. 1/2 mile north of intersection with 4N38. 1393 Comment
  HSC16448  Camissonia cheiranthifolia R. E. Hafenfeld 1965-5-9 26 Humboldt 1/2 mi. S of Squashan Creek near Gold Bluff Beach Rd. Comment
  SEINET10462972  Campanula prenanthoides Overton 1979-8-2 OVERTON 12621 Humboldt Near Grogan Hole, on the Salmon Mountain quad., close to the town of Hoopa 1554 Comment
  SEINET10462966  Campanula prenanthoides Tracy 1911-7-4 TRACY 3286 Humboldt Hill slopes at west side of Trinity River; near Willow Creek 244 Comment
  SEINET10939002  Campanula prenanthoides Tracy 1934-8-23 TRACY 13600 Humboldt Willow Creek Canyon 457 Comment
  SEINET10463747  Campanula scouleri Overton 1979-7-23 OVERTON 9497 Humboldt Near Titlow Hill, on the Willow Creek quadrangle, close to the town of Willow Creek 1280 Comment
  SEINET201886  Campanula scouleri Joseph P. Tracy 1947-6-28 17722 Humboldt Dinsmore's along Van Duzen River opposite Buck Mountain. 762 Comment
  UC492266  Capsella bursa-pastoris Joseph P. Tracy 1932-7-16 10649 Humboldt Corral Prairie; Klamath Mountains, Corral Prairie 1524 Comment
  HSC26654  Cardamine breweri Thomas W. Nelson 1971-4-27 427 Humboldt Along Jolly Giant Creek, HSU campus Comment
  CAS-BOT-BC37428  Cardamine californica John Thomas Howell 1954-4-24 29152 Humboldt Bull Creek Flat. Comment
  HSC26340  Cardamine californica Thomas W. Nelson 1971-4-4 365 Humboldt Above the S Fork of the Van Duzen River and beside Hwy. 36 at the bridge over the Van Duzen River Comment
  HSC6694  Cardamine californica J. L. Baker 1965-4-12 43 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  HSC8597  Cardamine californica D. K. Smith 1968-3-3 12 Humboldt On West End Rd., ca. 3 mi. from Hwy. 299 Comment
  HSC95664  Cardamine californica Kevin Thomas 2004-3-6 1 Humboldt Along beach access trail to College Cove 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
  UC162639  Cardamine californica Harley P. Chandler May 1901 1091 Humboldt Idlewild near Dyerville (Humboldt Bay); North Coast Ranges, , Idlewild 152 Comment
  POM272917  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  HSC64792  Cardamine oligosperma J. P. Smith 1971-10-9 4997 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  HSC79513  Cardamine oligosperma Kenneth Clark 1980-3-2 512 Humboldt Middle alluvial terrace, Dead Man's Gulch 37 Comment
  UC668057  Cardamine pensylvanica Joseph P. Tracy 1937-7-2 15401 Humboldt head Little Hors-Linto Creek , head Little Hors-Linto Creek (Trinity Summit) 1371 Comment
  UC668056  Cardaria draba Joseph P. Tracy 1938-6-12 15895 Humboldt opposite mouth of Van Duzen River (Eel River, Alton to Fortuna); Eel River 15 Comment
  RSA0097053  Cardionema ramosissimum R. F. Thorne, Percy C. Everett 1965-8-5 35155 Humboldt Samoa Dunes. 3 Comment
  UC1225795  Cardionema ramosissimum Joseph P. Tracy 1947-7-3 17765 Humboldt at mouth of Little River 6 Comment
  UC161023  Cardionema ramosissimum Joseph P. Tracy 1909-7-18 3018 Humboldt Ocean Beach at Humboldt Bay; Northern Coast Region, , Ocean Beach Comment
  UC562440  Carex amplifolia Joseph P. Tracy 1935-6-23 13986 Humboldt French Camp Ridge 1066 Comment
  RSA32725  Carex aquatilis var. dives A. A. Heller 1930-8-4 s.n. Humboldt Little River. Comment
  UC1103626  Carex aquatilis var. dives Joseph P. Tracy 1927-8-22 8352 Humboldt Bald Mountain, meadow near High Prairie Northern Coast Ranges 1066 Comment
  CAS-BOT-BC19216  Carex barbarae Henry M. Pollard 1948-7-29 s.n. Humboldt Near Woodson Mine - Near Orleans. Comment
  HSC23092  Carex brainerdii D. H. Norris 1971-5-17 19078 Humboldt On trail to King Peak, 1 mi. N of road terminus of Horse Mtn. to King Peak Rd., N of Shelter Cove 1067 Comment
  HSC7100  Carex buxbaumii B. D. Rogers 1965-10-2 1018 Humboldt Big Lagoon 0 Comment
  SEINET10646885  Carex buxbaumii Robert F. Thorne 1965-9-8 Thorne 35293 Humboldt Big Lagoon. 3 Comment
  CAS-BOT-BC34977  Carex densa Joseph Prince Tracy 1935-5-25 13855 Humboldt Fort Seward. 106 Comment
  JEPS80029  Carex densa Joseph P. Tracy 1925-5-30 7048 Humboldt McClellan Mountain Northern Coast Ranges, McClellan Mountain 822 Comment
  UC194805  Carex deweyana subsp. leptopoda Joseph P. Tracy 1913-6-22 4267 Humboldt Dinsmore's Ranch in valley of Van Duzen River, opposite Buck Mountain 0 Comment
  CAS-BOT-BC19861  Carex echinata subsp. echinata Joseph Prince Tracy 1930-7-16 8986 Humboldt North Coast Ranges. South Fork Mountain. At McKay Camp. 1676 Comment
  CAS-BOT-BC19967  Carex exsiccata Joseph Prince Tracy 1934-7-13 13388 Humboldt Dow's Prairie. 60 Comment
  POM126509  Carex feta Joseph P. Tracy 1921-6-12 5828 Humboldt Butler Valley. 152 Comment
  CAS-BOT-BC20012  Carex feta H. D. Ripley; R. C. Barneby 1945-6-16 6823 Humboldt NW of Harris. 883 Comment
  UC1152058  Carex fracta Joseph P. Tracy 1949-8-26 18515 Humboldt 6 mi NE of Hawkins Bar (meadow at Fern Creek, Happy Camp Mountain); Trinity Summit Range 1219 Comment
  UC303151  Carex gynodynama Joseph P. Tracy 1925-5-10 6962 Humboldt Hydesiville. Comment
  CAS-BOT-BC22315  Carex harfordii Alice Eastwood; John Thomas Howell 1937-6-23 4791 Humboldt Near Dinsmores. Comment
  CAS-BOT-BC21021  Carex hendersonii W. R. Dudley 1899-6-19 s.n. Humboldt Scotia. Comment
  CHSC90275  Carex hoodii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8541 Humboldt North Coast Ranges. Along Forest Road 13N01 18 miles from junction with State Route 96. 1066 Comment
  UC562283  Carex laeviculmis Joseph P. Tracy 1929-7-4 8607 Humboldt French Camp Ranch Northern Coast Ranges 1066 Comment
  HSC61630  Carex lenticularis var. lipocarpa Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  CAS-BOT-BC31663  Carex lyngbyei Joseph Prince Tracy 1935-6-8 13945 Humboldt Bordering Freshwater Slough, Humboldt Bay. 6 Comment
  POM126111  Carex lyngbyei Joseph P. Tracy 1922-5-28 6059 Humboldt Mouth of Little River 3 Comment
  UC1115809  Carex lyngbyei Joseph P. Tracy 1938-7-15 16069 Humboldt mouth Eel River 3 Comment
  SEINET7483608 Image available Carex mendocinensis Ray Tallent 1987-1 894 Humboldt Six Rivers National Forest; Roadside S of Horse Mtn 1420 Comment
  HSC44548  Carex multicostata Brad Klipfel 1973-7-15 167 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UCD140669  Carex multicostata Don Hagar 1957-8-27 s.n. Humboldt Red Cap Prairie, Trinity Summit area, around 15 miles east of Hoopa. Comment
  HSC40257  Carex obnupta Linda M. Barker 1976-4-30 1421 Humboldt 3 mi. W of Arcata Comment
  HSC7065  Carex obnupta D. B. Bader 1963-3-29 35 Humboldt Second of Clam Beach Lagoons, W of Hwy. 101 Comment
  POM118373  Carex obnupta Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UCD140701  Carex obnupta Gordon Leppig 1998-6-26 858 Humboldt McKinleyville, Hammond Trail, 100 m south of Knox Cove. 18 Comment
  RSA15497  Carex obnupta Joseph P. Tracy 1934-7-30 13514 Humboldt Dry Lagoon (Along coast in front of South End of Stone Lagoon). 3 Comment
  UCD140712  Carex obnupta L. P. Janeway; B. Castro 2004-9-10 8319 Humboldt North Coast. South Spit of Humboldt Bay, 3.6 km north-northeast of Table Bluff Lighthouse site; between South Spit Road and the Humboldt Bay mudflats. 2 Comment
  HSC7158  Carex pachycarpa H. E. Parks, J. P. Tracy 1935-6-16 11271 Humboldt Buck Mtn., lower NW slopes 793 Comment
  CAS-BOT-BC119226  Carex pachystachya Joseph Prince Tracy 1939-5-6 16282 Humboldt Lack Pond; in Trinity River Valley, opposite mouth of Willow Creek. 152 Comment
  UC709318  Carex pachystachya Joseph P. Tracy 1938-6-15 15934 Humboldt vicinity Carlotta 30 Comment
  CAS-BOT-BC119163  Carex pansa Joseph Prince Tracy 1935-7-18 14104 Humboldt Low sandy ground at edge of salt marsh, next to Table Bluff. Around Humboldt Bay. 3 Comment
  SJSU8437  Carex pansa H. T. Harvey 1977-7-5 603 Humboldt margin of tidal salt-marsh, Elk River Spit, Humboldt Bay Comment
  UC562258  Carex pansa Joseph P. Tracy 1935-7-18 14104 Humboldt next to Table Bluff (around Humboldt Bay); around Humboldt Bay 3 Comment
  HSC76847  Carex praticola L. P. Janeway 1982-6-20 15 Humboldt Near road underdrain, 30 m N on FS Rd. 6N36 from Titlow Hill Rd. 1384 Comment
  CAS-BOT-BC118821  Carex preslii R. Tallent 1987-8-11 893 Humboldt Six Rivers National Forest. Roadside S of Horse Mtn. 1449 Comment
  JEPS26001  Carex preslii Joseph P. Tracy 1938-6-9 15878 Humboldt borders of pond, Dobbyn Creek Dobbyn Creek 152 Comment
  CAS-BOT-BC118007  Carex rossii Joseph Prince Tracy 1927-6-19 8201 Humboldt Big Lagoon 15 Comment
  SEINET10709360  Carex rossii Joseph P. Tracy 1949-5-8 Tracy 18295 Humboldt Open flat by old Strong's District School House, 5 miles east of town. 61 Comment
  SEINET2144409  Carex rostrata Unknown 1924-7-4 6706 Humboldt Snow Camp. 1370 Comment
  UC213329  Carex scopulorum var. bracteosa Joseph P. Tracy 1919-9-25 5298 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  HSC102114  Carex spectabilis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1018 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CHSC102860  Carex subbracteata Peter F. Zika 2009-6-16 24500 Humboldt Outer North Coast Range. Above Route 299, 0.7 road miles W of Berry Summit. 780 Comment
  UC1152066  Carex unilateralis Joseph P. Tracy 1950-7-6 18989 Humboldt Burr Valley; on NW slopes of Buck Mountain 1066 Comment
  UC1103605  Carex viridula var. viridula Joseph P. Tracy 1934-10-21 13693 Humboldt in front of South End Stone Lagoon (Dry Lagoon) 3 Comment
  HSC2869  Carpobrotus chilensis D. E. Anderson 1961-9-2 1767 Humboldt 3 mi. S of Cape Mendocino Comment
  CAS-BOT-BC281885  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
  SEINET12027436  Castanopsis chrysophylla J. P. Tracy 1950-1 19239 Humboldt Grouse Mtn 1524 Comment
  RSA167257  Castilleja affinis Joseph P. Tracy 1950-6-15 18799 Humboldt Mail Ridge, north of Harris 7 miles Comment
  JEPS82  Castilleja affinis subsp. affinis Lincoln Constance 1934-3-29 715 a Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  HSC20579  Castilleja affinis subsp. litoralis D. J. Jager 1965-5-12 67 Humboldt 0.5 mi. N of Trinidad on bluff above the ocean 46 Comment
  UC1196863  Castilleja affinis subsp. litoralis Joseph P. Tracy 1912-4-21 3575 Humboldt n slope Humboldt Hill; Northern Coast Region, Humboldt Bay Region 0 Comment
  UC147876  Castilleja affinis subsp. litoralis J. P. Tracy 1900-6-25 864 Humboldt immediate vicinity Eureka 0 Comment
  HSC36100  Castilleja ambigua subsp. humboldtiensis Tom Mills 1974-5-12 Humboldt Beside Humboldt Bay near Bayside Cut-off Comment
  CAS-BOT-BC255524  Castilleja applegatei var. pinetorum Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  CHSC32837  Castilleja attenuata Lora L. Anderson 1981-4-26 18 Humboldt Ca. 1.5 mi ne of Redwood creek 4.5 mi n of 299 w 18 mi ne of Arcata. 228 Comment
  HSC44563  Castilleja miniata Brad Klipfel 1973-7-15 183 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC30748  Castilleja pruinosa Brad Klipfel 1974-5-30 1349 Humboldt Beside the Redwood Valley to Hoopa Rd. Comment
  UC176983  Castilleja pruinosa Joseph P. Tracy 1912-7-31 3931 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  UC26418  Castilleja pruinosa Harley P. Chandler Jun 1901 1485 Humboldt Klamath River; North Coast Ranges 426 Comment
  HSC103246  Castilleja pruinosa Lisa D. Hoover 1996-6-12 145 Humboldt Six Rivers National Forest, Lower Trinity District, Grouse Mtn. Quad, Horse Mtn. 1463 Comment
  UC1222828  Castilleja pruinosa Joseph P. Tracy 1950-7-2 18978 Humboldt below Grizzly Camp (at crossing of Little Hors Linto Creek); Little Hors Linto Creek Comment
  UC176440  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1913-6-19 4213 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD74318  Caulanthus major Tim Curns 2008-7-1 s.n. Humboldt Nevada, Humboldt County: Toiyabe National Forest. Hinkey Summit, near road 084, across from road 536, along unmarked road. Comment
Read comments
May 23 2013
  UC1502114  Ceanothus R. Sutherland 1976-5-11 7 .11.76 Humboldt just outside Sec 32 Pt. Delgado Quad.; Pt. Delgada Quad. 609 Comment
  HSC73442  Ceanothus cuneatus Gail Newton 1980-7-11 1311 Humboldt Near Red Mtn. 1341 Comment
  UCD112128  Ceanothus foliosus R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  SBBG4195  Ceanothus foliosus var. foliosus H. and M. Dearing 1932-5-10 987 Humboldt near Blue Lake Comment
  HSC37592  Ceanothus foliosus var. vineatus R. Sutherland 1975-5-17 0 .17575 Humboldt Edge of Horse Mtn. 534 Comment
  JEPS42372  Ceanothus incanus W. L. Jepson 1902-8-5 2149 Humboldt Ettersburg to Briceland Comment
  UC275284  Ceanothus incanus Joseph P. Tracy 1924-5-11 6677 Humboldt Bull Creek Northern Coast Ranges 121 Comment
  CAS-BOT-BC63680  Ceanothus integerrimus L. B. Kildale 1928-6-3 5094 Humboldt Bug Creek. Comment
  OBI36663  Ceanothus integerrimus David J. Keil 1983-7-2 17325 Humboldt Ca. 4 mi SE of SR299 along Titlow Hill rd below Horse Mtn Summit rd Comment
  UC1198004  Ceanothus integerrimus Joseph P. Tracy 1921-6-19 5839 Humboldt ridge to n Willow Creek (between Willow Creek and campbell Creek, near Langdon's Gopher Camp.); Brannon Mountain, Northern Coast Ranges 762 Comment
  UC668164  Ceanothus integerrimus Joseph P. Tracy 1934-4-15 13180 Humboldt Willow Creek Trinity River Valley 152 Comment
  POM118611  Ceanothus oliganthus var. sorediatus Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville. Comment
  HSC43183  Ceanothus parryi R. Sutherland 1975-7-5 12 .5775 Humboldt 244 Comment
  CAS-BOT-BC52042  Ceanothus prostratus Doris K. Kildale 1926-4-25 1810 Humboldt Hoopa Mountain 792 Comment
  CAS-BOT-BC53060  Ceanothus pumilus Joseph P. Tracy 1927-5-15 8056 Humboldt Hoopa Mountain - On road west from Hoopa Valley 914 Comment
  HSC43189  Ceanothus pumilus R. Sutherland 1976-4-24 1 .24476 Humboldt 518 Comment
  UC668161  Ceanothus thyrsiflorus Joseph P. Tracy 1937-5-30 15317 Humboldt Bridgeville 198 Comment
  UC726578  Ceanothus thyrsiflorus A. A. Heller 1937-6-11 15916 Humboldt Near Big Lagoon Patric Point state Park Comment
  OBI44963  Ceanothus thyrsiflorus var. thyrsiflorus Midred J. Cady 1938-7-14 s.n. Humboldt Near Trinidad Comment
  SBBG71387  Ceanothus thyrsiflorus var. thyrsiflorus R. Hartwell 1938-8-6 Humboldt above Arcata, near coast Comment
  CAS-BOT-BC52863  Ceanothus velutinus Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  RSA46890  Ceanothus velutinus var. laevigatus Doris K. Kildale 1926-4-25 1812 Humboldt Hoopa Mt. Comment
  UCD129971  Centaurea benedicta P. B. Kennedy 1929-6-13 s.n. Humboldt Etter's Ranch, Ettersburg. Comment
  CDA7083  Centaurea calcitrapa T. C. Fuller 1960-8-25 4974 Humboldt Around Pacific Lumber Company barn, across Eel River from South Fork. 0 Comment
  HSC98771  Centaurea diffusa Cara Witte 2007-8-9 634 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1584 Comment
  UC906756  Centaurium muehlenbergii Joseph P. Tracy 1941-9-7 17013 Humboldt near Blue Lake; Mad River 15 Comment
  JEPS11948  Centaurium muehlenbergii Rimo Bacigalupi with C. L. Custer and G. T. Robbins 1954-8-10 4755 Humboldt 1 mi s Garberville (along U.S. Highway 101) 213 Comment
  JEPS46931  Centaurium muehlenbergii Joseph P. Tracy 1931-8-9 9610 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  HSC16592  Cephalanthera austiniae D. K. Walker 1960-7-21 Humboldt West boundary of Simpson Redwood land, 1/2 mi. N of 500 A Road. Comment
  HSC99499  Cephalanthera austiniae K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 159 Humboldt Near North Trinity Mtn, along Forest Service Rd 10NO2, between two forks of Domingo Creek 1433 Comment
  CAS-BOT-BC384902  Cerastium arvense W. C. Blasdale 1896-5-31 s.n. Humboldt Eureka Comment
  HSC97652  Cerastium arvense Juha Pykala, D. H. Norris 1987-5-20 749 Humboldt 7.5 mi. S of Ferndale along Wildcat Rd. near Green Pond Ranch 450 Comment
  CAS-BOT-BC384905  Cerastium arvense Kenneth Clark 1980-4-18 599 Humboldt Shelter Cove. Above Dead Man's Gulch 175 Comment
  UC8223  Cerastium arvense H. N. Bolander 1867-1 6520 Humboldt E. Fork Eel R. Comment
  RSA168880  Cerastium arvense subsp. maximum Joseph P. Tracy 1950-6-15 18820 Humboldt Mail Ridge, north of Harris 7 miles Comment
  HSC12705  Cerastium glomeratum Jana Kattenhorn 1970-10-28 151 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  CAS-BOT-BC276489  Chaenactis douglasii var. douglasii Joseph P. Tracy 1933-7-25 12877 Humboldt Grouse Mountain 1524 Comment
  POM161038  Chamaecyparis lawsoniana Joseph P. Tracy 1926-6-27 7672 Humboldt Horse Mountain 1463 Comment
  HSC69761  Chamaesyce maculata Thomas W. Nelson, Jane P. Nelson 1977-9-4 3747 Humboldt Willow Creek Comment
  UC275332  Chamaesyce serpyllifolia Joseph P. Tracy 1923-9-16 6555 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC502947  Chamaesyce serpyllifolia Joseph P. Tracy 1930-10-12 9208 Humboldt Eel River Northern Coast Ranges (Alton to Fortuna) 15 Comment
  UC1122511  Chamerion angustifolium subsp. circumvagum H. L. Person 1932-7-16 Humboldt hwy n Trinidad; Rock Point Quadrangle Comment
Read comments
Aug 3 2007
  HSC55088  Cheilanthes gracillima G. L. Clifton, Griswold 1979-7-31 11762 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC74806  Cheilanthes gracillima Gail Newton 1980-7-23 1717 Humboldt Near Packsaddle Ridge 1463 Comment
  POM182347  Cheilanthes gracillima Joseph P. Tracy 1912-7-26 3841 Humboldt Kneeland Prairie 762 Comment
  UC275479  Chenopodium ambrosioides Joseph P. Tracy 1925-11-1 7298 Humboldt Shively Northern Coast Ranges, Eel River (along river from South Fork to Scotia) 60 Comment
  HSC55102  Chimaphila umbellata G. L. Clifton 1979-7-31 11834 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1141460  Chrysosplenium glechomifolium Harold E. Parks Feb 1939 5267 Humboldt 2 mi n Trinidad (along McNeil's Creek); McNeil's Creek Comment
  HSC8634  Cicuta douglasii D. E. Anderson 1961-9-30 1850 Humboldt Blue Lake Comment
  UC154050  Cicuta douglasii Joseph P. Tracy 1907-7-20 2597 Humboldt Region about Humboldt Bay, Northern Coast Region Humboldt Bay; Northern Coast Region, Humboldt Bay 0 Comment
  UC179916  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
  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
  SEINET201029 Image available Cinna latifolia J. P. Tracy 1919-9-18 5255 Humboldt Trinity Summit 1524 Comment
  HSC99470  Circaea alpina subsp. pacifica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 124 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SEINET200612 Image available Cirsium andrewsii H. E. Parks, Joseph P. Tracy 1934-7-13 13383 Humboldt Vicinity of Trinidad. Comment
  SBBG25852  Cirsium arvense D. Myrick 1978-8-16 Humboldt Prairie Crk Redwoods State Park 152 Comment
  UC1223063  Cirsium arvense Joseph P. Tracy 1950-8-1 19245 Humboldt near summit e of North Fork of Mad River Comment
  HSC104074  Cirsium arvense T. Collins 2002-7-31 Humboldt Six Rivers National Forest; along road cut on Hwy. 36 Comment
  HSC40131  Cirsium arvense Thomas W. Nelson, James Nelson 1976-7-28 3082 Humboldt Between Alder Springs and road to Pine Mtn. 1524 Comment
  CAS-BOT-BC284438  Cirsium brevistylum Henry M. Pollard 1948-8-9 s.n. Humboldt Camp Creek near Orleans Comment
  RSA0070620  Cirsium douglasii var. breweri J. M. Tucker 1948-9-3 1850 Humboldt On Horse Mountain at junction of road to Grouse Mountain and road to Horse Mountain Mine. 1463 Comment
  CAS-BOT-BC285531  Cirsium occidentale var. candidissimum Doris K. Kildale 1928-6-24 5275 Humboldt Horse Mountain 914 Comment
  CDA19782  Cirsium occidentale var. candidissimum J. Dolf 2001-9-6 PDR 069832 Humboldt Northern California; Vicinity of Honeydew. 0 Comment
  UC302287  Cirsium occidentale var. venustum Joseph P. Tracy 1926-6-20 7662 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 914 Comment
  UCD144226  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt near Berry Summit on Titlow Hill Road, 3.9 miles south of Highway 229. Comment
  CDA1548  Cirsium remotifolium var. rivulare E. C. Whitney 1968-7-25 s.n. Humboldt Larabee Valley State Hwy 36, 0.5 mi. E of bridge over the South Fork of the Van Duzen River. 0 Comment
  HSC40956  Cirsium vulgare Linda M. Barker 1976-8-24 1684 Humboldt 3 mi. W of Arcata Comment
  RSA40410  Cirsium vulgare P. A. Munz 1948-8-13 12349 Humboldt Highway 229, 21 miles E of Blue Lake 762 Comment
  CHSC32908  Clarkia amoena James P. Smith 1973-5-26 6827 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Railroad right-of-way. Comment
  UC204004  Clarkia amoena subsp. amoena Joseph P. Tracy 1918-7-3 4989 Humboldt Wilder Ridge Northern Coast Ranges, Kings Peak Range 762 Comment
  JEPS43543  Clarkia amoena subsp. huntiana W. L. Jepson 1927-7-3 12369 Humboldt Garberville 228 Comment
  HSC89901  Clarkia davyi Leonel Arguello 1989-6-24 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, end of the Fernstrom-Root trail Comment
  HSC38102  Clarkia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2623 Humboldt McKeown Ranch, N of Dinsmore. Comment
  LA206342  Clarkia gracilis H. Lewis; M. Lewis 1947-6-13 423 Humboldt Highway 36 at S Fork of Van Duzen River (Bridge 4-119) Comment
  RSA299017  Clarkia gracilis subsp. sonomensis Lincoln Constance 1934-5-23 618 Humboldt South Fork Eel River: upper end of Look Prairie 366 Comment
  CAS-BOT-BC172511  Clarkia purpurea subsp. quadrivulnera Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  JEPS43687  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1932-6-26 10264 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC183695  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1912-7-26 3831 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC58856  Clarkia purpurea subsp. quadrivulnera Harley P. Chandler June 1901 1471 A Humboldt Klamath River North Coast Ranges 304 Comment
  UC1222851  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1950-6-15 18809 Humboldt n Harris (Fort Seward Ranch); Mail Ridge Comment
  HSC43847  Clarkia purpurea subsp. viminea Maralyn O'Meara 1974-7-17 556 Humboldt Kneeland Comment
  HSC75444  Claytonia cordifolia J. O. Sawyer 1980-7-18 3601 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC74245  Claytonia exigua subsp. exigua M. A. Baker 1980-7-11 2806 Humboldt Near Red Mtn. 1433 Comment
  HSC104160  Claytonia exigua subsp. exigua Andrea Pickart 2002-4-3 44 Humboldt Lanphere Dunes 25 Comment
  HSC96213  Claytonia exigua subsp. glauca M. Lindquist, C. Riley 2005-6-15 12 Humboldt 1490 Comment
  HSC41230  Claytonia lanceolata Brad Klipfel 1974-5-8 318 Humboldt Horse Mtn. Comment
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Sep 23 2019
  UC672996  Claytonia parviflora subsp. parviflora Joseph P. Tracy 1937-3-17 15285 Humboldt Willow Creek; Trinity River Valley 152 Comment
  UC161029  Claytonia rubra subsp. depressa Joseph P. Tracy 1911-4-30 3175 Humboldt Eureka; Northern Coast Region Comment
  HSC104454  Claytonia rubra subsp. rubra Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 6 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC672997  Claytonia rubra subsp. rubra Joseph P. Tracy 1930-7-16 8939 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC203565  Claytonia rubra subsp. rubra Joseph P. Tracy 1918-4-14 4871 Humboldt Fish's Mill Creek; Northern Coast Ranges, Dows Prairie 60 Comment
  HSC74046  Claytonia saxosa Gail Newton 1980-7-11 1320 Humboldt Near Red Mtn. 1341 Comment
  HSC82185  Claytonia saxosa Thomas W. Nelson 1977-6-15 3442 Humboldt Along old road to ski area 1372 Comment
  CAS-BOT-BC443895  Claytonia sibirica Harley P. Chandler 1901-5-1 1264 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  CAS-BOT-BC443892  Claytonia sibirica Volney Rattan 1878-1-1 s.n. Humboldt North of Mad River Comment
  RSA117684  Claytonia sibirica S. S. Tillett 1956-7-3 601 Humboldt 18miles from jct 101. 564 Comment
  UC1173720  Clematis lasiantha Joseph P. Tracy 1939-4-29 16229 Humboldt bluffs opposite mouth of Hors-Linto Creek (Trinity R.); Trinity R. 152 Comment
  HSC49793  Clintonia andrewsiana R. York 1979-4-21 242 Humboldt Behind the town of Korbel Comment
  HSC83460  Clintonia andrewsiana R. N. Raynor 1935-5-22 Humboldt Ft. Seward Comment
  SEINET12047066  Clintonia andrewsiana Unknown 1972-1 s.n. Humboldt Humboldt State University Forest, W of campus with city limits of Arcata 198 Comment
  SEINET12051465  Clintonia andrewsiana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -287 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  CHSC63433  Clintonia uniflora Vernon H. Oswald 1994-6-29 6364 Humboldt Friday Ridge Rd. (Forest Rd. 6N08) 3.5 mi NE of Tiltow Hill Rd., 4.6 mi S of Brush Mt. Lookout Rd., S of Hwy. 299 and Willow Creek. 1237 Comment
  RSA12552  Clintonia uniflora Carl B. Wolf 1934-7-2 5887 Humboldt Snow camp. (Mts. east of Korbel) 1372 Comment
  SEINET201027  Cnicus benedictus Harold E. Parks, Joseph P Tracy 1942-7-2 11580 Humboldt Dinsmore's 762 Comment
  UC1174489  Collinsia grandiflora Volney Rattan 1903-1 1878 Humboldt Comment
  HSC101977  Collinsia linearis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 874 Humboldt Patterson Meadows 1566 Comment
  HSC99026  Collinsia linearis Cara Witte 2008-7-1 788 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .5 mile south of intersection with 5N04 and 4N32E. 1406 Comment
  UC1115823  Collinsia parviflora Joseph P. Tracy 1939-7-9 16332 Humboldt Snow Camp 1402 Comment
  UC604633  Collinsia parviflora Joseph P. Tracy 1938-6-13 15922 Humboldt Grouse Mountain, at Cold Springs Cold Springs; Grouse Mountain, Cold Springs 1432 Comment
  UC55956  Collinsia rattanii J. P. Tracy 1902-6-3 1665 Humboldt Ridge between Eel River and South Fork, near Hubbard's Station Eel River; Ridge between Eel River and South Fork 609 Comment
  JEPS26356  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1916-5-2 4685 Humboldt garden Eureka; North Coast Ranges 762 Comment
  JEPS4616  Collinsia torreyi var. wrightii W. L. Jepson Jul 16 1902-Jul 23 1902 2042 Humboldt Trinity Summit 2133 Comment
  UC60868  Collomia grandiflora Harley P. Chandler June, 1901 1361 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  BLMAR531  Collomia heterophylla Jennifer Wheeler 2009-6-23 531 Humboldt King range, On Paradise Ridge road Comment
  HSC89514  Collomia heterophylla M. Roantree 1985-4-28 20 Humboldt W side of Trinidad Head, along trail Comment
  HSC45808  Collomia heterophylla J. P. Smith, Steve Selva 1970-6-30 4139 Humboldt Comment
  HSC102099  Collomia tracyi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1002 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CHSC26757  Conium maculatum M. S. Taylor 1977-8-5 1433 Humboldt Around bridge over Eel River, at the turnoff from Hwy 101 to Ferndale, in Fernbridge. Comment
  UC1222614  Conium maculatum Joseph P. Tracy 1950-6-8 18768 Humboldt near Petrolia (Hills between town and ocean) Comment
  HSC23830  Conium maculatum R. A. Vanbianchi 1971-11-19 102 Humboldt Along Fieldbrook Rd., 3 mi from junction with Hwy 299 Comment
  UC902062  Convolvulus arvensis Joseph P. Tracy 1949-7-31 18400 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC164847  Conyza canadensis Joseph P. Tracy 1911-7-9 3458 Humboldt near its mouth along Willow Creek; Northern Coast Ranges, Tributary of Trinity River, Willow Cr 182 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
  BLMAR83  Corallorhiza maculata Jennifer Anthony-Wheeler 1994-6-2 83 Humboldt IAQUA 1036 Comment
  UC176373  Corallorhiza maculata Joseph P. Tracy 1913-6-17 4191 Humboldt Buck Mountain Northern Coast Ranges (near summit) 1524 Comment
  UC13532  Corallorhiza mertensiana Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC63188  Corallorhiza mertensiana M. A. Baker 1979-6-8 805 Humboldt 1.5 km. N of Gan's Prairie along Bald Hills Road Comment
  HSC37701  Corallorhiza striata A. Montalvo, J. D. Ackerman 1976-5-16 756 Humboldt 0.25 mi. E of State Hwy. 299 on Chezem Rd., W of Redwood Creek Valley Comment
  POM319325  Cordylanthus maritimus subsp. palustris Patricia Wilder 1968-8-21 4413 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  RSA244999  Cordylanthus maritimus subsp. palustris William J. Ferlatte, B. D. Rogers 1966-8-15 3125 Humboldt 6 miles east of Korbel; Cutoff Red wood Comment
  SEINET8733340 Image available Cordylanthus viscidus Joseph P. Tracy 1947-1 17884 Humboldt one mile west of Mud Springs, in serpentine formation 1158 Comment
  HSC100234  Cordyline australis J. P. Smith 2010-5-29 12891 Humboldt Eureka; Near intersection of West Del Norte St. and Railroad Ave. Comment
  UC169038  Corethrogyne filaginifolia Joseph P. Tracy 1912-7-21 3773 Humboldt Alton Northern Coast Region 30 Comment
  HSC45638  Cornus nuttallii Diane L. Reed 1978-4-22 35 Humboldt Tish Tang Campground, 5 miles north of Willow Creek on State Hwy. 96. Comment
  HSC6404  Cornus nuttallii Eugene Andreuccetti 1964-5-2 42 Humboldt 1 mi. from Willow Creek, along Hwy. 299 Comment
  RSA15577  Cornus nuttallii C. B. Wolf 1927-8-28 1165 Humboldt In the valley of the Hoopa Indian Reservation. Comment
  RSA46900  Cornus nuttallii Doris K. Kildale 1925-8-13 1134 Humboldt Willow Creek, bank of Trinity River. 152 Comment
  RSA97270  Cornus nuttallii F. W. Peirson 1923-7-9 3956 Humboldt Humboldt County State Park on Eel River, northern California. Comment
  CAS-BOT-BC212181  Cornus sericea Joseph P. Tracy 1929-8-18 8653 Humboldt Dinsmore's Ranch on Van Duzen River opposite Buck Mountain 670 Comment
  CAS-BOT-BC210538  Cornus sessilis Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  JEPS53365  Coronopus didymus Lincoln Constance 1934-6-18 902 Humboldt border of N. Dyerville Flat, near South Fork Rail Road Station and Post Office, South Fork Eel River South Fork Eel River; Bull Creek Region, South Fork Eel River Comment
  UC1197932  Corylus californica Joseph P. Tracy 1923-8-19 6538 Humboldt Lawrence Creek near Kneeland Prairie Comment
  UC1197933  Corylus californica Joseph P. Tracy Jul 16-19 1930 9058 Humboldt South Fork Mountain, along summit near Blake lookout Northern Cosast Ranges 1706 Comment
  BLMAR492  Corylus cornuta subsp. californica Jennifer Wheeler 2009-4-30 492 Humboldt King range, Hidden Valley trail; near overlook Comment
  HSC31123  Corylus cornuta subsp. californica J. O. Sawyer 1970-6-24 2260 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  HSC58352  Corylus cornuta subsp. californica Overton, Butler 1979-8-2 12690 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA33407  Corylus cornuta var. californica Doris K. Kildale 1927-3-25 3004 Humboldt Humboldt Hill Comment
  SEINET12031408  Corylus cornuta var. californica F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -282 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UC166079  Cotula australis J. P. Tracy 1900-5-26 804 Humboldt Eureka Comment
  UC1199279  Cotula coronopifolia Joseph P. Tracy 1922-5-28 6058 Humboldt Little River Beach North Coast Ranges. Little River Beach 6 Comment
  RSA246787  Cotula coronopifolia R. F. Thorne, Percy C. Everett 1965-8-8 35272 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  UC1198822  Crassula aquatica Joseph P. Tracy 1914-5-14 4470 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 Comment
  UC581731  Crepis acuminata Joseph P. Tracy 1935-7-30 14382 Humboldt Salmon Summit 2103 Comment
  CAS-BOT-BC376477  Crepis pleurocarpa Joseph P. Tracy 1935-7-28 14332 Humboldt Trinity Summit. Head of Brett Hole 1828 Comment
  HSC41266  Crepis pleurocarpa Brad Klipfel 1974-7-23 459 Humboldt Horse Mountain Comment
  HSC98953  Crepis pleurocarpa Cara Witte 2008-7-28 953 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1565 Comment
  RSA167386  Crepis pleurocarpa Joseph P. Tracy 1947-7-9 17846 Humboldt Top of Horse Mt Comment
  RSA43684  Crepis setosa H. M. Pollard 1948-8-8 s.n. Humboldt Roadside between Orleans and Camp Creek Comment
  HSC46059  Crocosmia X crocosmiiflora Catherine Chin 1978-8-5 103 Humboldt Arcata, at A and 11th Sts. Comment
  HSC57947  Cryptantha affinis G. L. Clifton, Griswold 1979-7-31 11623 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC1239661  Cryptantha affinis Joseph P. Tracy 1937-7-25 15546 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UCSB14885  Cryptantha leiocarpa 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  UC199009  Cryptantha leiocarpa Joseph P. Tracy 1906-5-13 2457 Humboldt Humboldt Bay Comment
  UC525586  Cryptantha leiocarpa Joseph P. Tracy 1932-5-10 9939 Humboldt s of point of Cape Mendocino (near ocean shore); Cape Mendocino 3 Comment
  HSC55165  Cryptogramma acrostichoides Gilbert Muth 1979-8-1 12155 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC76321  Cryptogramma acrostichoides Teresa Prendusi 1981-7-21 284 Humboldt Near Whiteys Peak 1646 Comment
  UC162944  Cupressus lawsoniana Joseph P. Tracy 1911-7-6 3341 Humboldt mountain slopes along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  JEPS43034  Cuscuta californica Lincoln Constance 1934-6-15 883 Humboldt Summit of Grasshopper Peak South Fork Eel River, Bull Creek Region, Grasshopper Peak 975 Comment
  RSA640954  Cuscuta californica K. Thorne, P. C. Everett 1965-8-9 35305 Humboldt Big Lagoon 3 Comment
  UC562474  Cuscuta campestris Joseph P. Tracy 1933-8-25 12996 Humboldt near mouth of Eel River; Centerville Beach 6 Comment
  HSC66829  Cycladenia humilis M. A. Baker 1980-7-24 3197 Humboldt Near Orleans Mtn. 1625 Comment
  UC1222261  Cynoglossum grande Joseph P. Tracy 1950-5-7 18647 Humboldt ca. 5 mi. n. Bridgeville (on rd. to S. Yager Valley) Comment
  UC1239626  Cynoglossum grande Joseph P. Tracy 1923-3-17 6166 Humboldt vicinity of Garberville; Northern Coast Ranges 121 Comment
  CAS-BOT-BC190381  Cynosurus echinatus Kenneth Clark 1980-3-22 523 Humboldt Above Dead Man's Gulch. 137 Comment
  HSC38430  Cynosurus echinatus Dennis Anderson, J. P. Smith 1971-6-18 - 1061 Humboldt Chezem Rd., 3 mi. E of bridge over Redwood Creek Comment
  UC1103244  Cynosurus echinatus Joseph P. Tracy 1950-6-21 18855 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  HSC75505  Cyperus eragrostis Melinda F. Denton 1981-7-3 4253 Humboldt On Hwy. 36, 32 mi. E of Alton, 17 mi. W of Van Duzen River Rd. 610 Comment
  SEINET200971  Cyperus erythrorhizos Joseph P. Tracy 1920-8-15 5364 Humboldt Klamath River at mouth of Bluff Creek. 152 Comment
  CHSC92487  Cyperus strigosus Gordon Leppig 2004-9-6 2197 Humboldt Trinity River. East bank of river on sandy shore. Across river from the Loncar Summer Estate, 3.5 k north of Willow Creek. UTM Zone 10, 446562E, 4535514N 120 Comment
  UC34814  Cypripedium montanum W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  UC71494  Cystopteris fragilis Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5844 Humboldt Trinity Summit Comment
  CDA4057  Cytisus scoparius T. C. Fuller 1961-3-22 5940 Humboldt North slope, Humboldt Hill, Eureka. 0 Comment
  SBBG53086  Dactylis glomerata R. N. Philbrick, J. R. Haller 1976-6-25 6 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  SBBG34665  Dactylis glomerata T. L. Secrest 1948-6-29 Humboldt southern Humboldt County [no specific locality] Comment
  UC1152019  Danthonia unispicata Joseph P. Tracy 1951-7-26 19593 Humboldt Redwwod Creek Board Camp Mountain (extreme head, n side of mt.) Comment
  HSC20252  Darmera peltata Jack Rockwell 1962-4-29 59 Humboldt E bank of Redwood Creek, near Hwy. 299 549 Comment
  UC673050  Daucus carota Joseph P. Tracy 1940-10-17 16761 Humboldt near Dyerville (South Fork Station); South Fork Station 48 Comment
  HSC21481  Daucus pusillus D. E. Anderson 1962-7-10 2247 Humboldt Luffenholtz Beach, about 2 mi. S of Trinidad along old Hwy. 101 Comment
  UCD127407  Daucus pusillus Linda M. Barker 1976-5-13 1486 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1197349  Daucus pusillus J. P. Tracy 1901-6-16 1145 Humboldt near Bucksport 0 Comment
  UC164990  Deinandra corymbosa J. P. Tracy 1902-8-10 1768 Humboldt immediate vicinity Eureka 0 Comment
  HSC96618  Delairea odorata Gordon Leppig 2005-4-8 2204 Humboldt N spit, S end of Peninsula Dr. 3 Comment
  UCD95699  Delphinium decorum K. Esau 1934-5-7 s.n. Humboldt Near Blocksburg 609 Comment
  CAS-BOT-BC9029  Delphinium decorum subsp. tracyi Doris Kildale Gillespie 1931-5-10 10550 Humboldt Snow Camp Comment
  RSA68806  Delphinium decorum subsp. tracyi Joseph P. Tracy 1932-7-12 10486 Humboldt Head of Brett Hole 1829 Comment
  HSC92103  Delphinium decorum subsp. tracyi S. Morrissette, J. Williams, K. Kopper 1994-5-6 50 Humboldt 0.4 mi. S of Hwy. 299 on Titlow Rd. 854 Comment
  RSA304854  Delphinium gracilentum James R. Shevock 1971-5-29 643 Humboldt Trinity Hwy. 457 Comment
  UC1075562  Delphinium hesperium E. K. Balls and L. W. Lenz 1956-6-12 21665 Humboldt along US Hwy 299 9.1 mi ne Blue Lake (Arcata to Willow Creek) 487 Comment
  CAS-BOT-BC10146  Delphinium menziesii Doris K. Kildale 1926-3-21 1617 Humboldt Kneeland Prairie 762 Comment
  RSA46895  Delphinium nudicaule Doris K. Kildale 1927-5-15 3164 Humboldt Petrolia Comment
  HSC32304  Delphinium nuttallianum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5650 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC9588  Deschampsia cespitosa J. A. Waller 1965-5-16 46 Humboldt Humboldt Bay. Comment
  SEINET3927146  Deschampsia cespitosa Joseph P. Tracy 1912-7-14 3750 Humboldt Northern Coast Region of California. Eureka.; 0 61 Comment
  SEINET10515720  Deschampsia cespitosa Mark Stopher 1980-6-4 Stopher 95 Humboldt Very common along Elk River near Hwy 101 bridge. T4N R1W sw 1/4 sec 4, Eureka quadrangle. Elevation 1 mi. 1 Comment
  UC595124  Deschampsia cespitosa subsp. beringensis David D. Keck 1938-8-5 4773 Humboldt Big Lagoon Comment
  CAS-BOT-BC192701  Deschampsia danthonioides Joseph P. Tracy 1935-6-23 13969 Humboldt French Camp Ridge 1066 Comment
  HSC9609  Deschampsia danthonioides H. E. Parks May 1934 5022 Humboldt Big Lagoon Comment
  HSC22052  Dicentra formosa B. D. Rogers, D. E. Anderson 1965-4-1 414 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  UC1196304  Dicentra formosa Joseph P. Tracy 1939-7-9 16329 Humboldt Snow Camp 1402 Comment
  HSC65838  Dicentra formosa subsp. oregana Gail Newton 1980-6-16 182 Humboldt Near Onion Mtn. 204 Comment
  HSC98563  Dicentra pauciflora Cara Witte 2008-6-13 729 Humboldt Forest Service Road 4N32. 2 miles west of intersection with Forest Service Road 5N04. 1514 Comment
  RSA10046  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1927-8-7 8313 Humboldt Trinity River Valley, at Willow Creek Comment
  RSA92450  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1931-5-17 9427 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC208955  Dichanthelium oligosanthes subsp. scribnerianum Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region. 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
  HSC81576  Dichelostemma ida-maia Thomas W. Nelson, Jane P. Nelson 1980-7-13 6067 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  CAS-BOT-BC501017  Dichelostemma ida-maia Doris K. Kildale 1927-7-10 3735 Humboldt Gans Prairie - Bald Hills 457 Comment
  CDA39454  Dichelostemma ida-maia G. D. Barbe, T. C. Fuller 1974-6-17 1828 Humboldt Thorne Road, 4 miles west of Redway, southern part of the county. 0 Comment
  RSA70148  Dichelostemma ida-maia F. W. Peirson 1926-7-12 7030 Humboldt W slope of Coast Range back of Orick. Comment
  SJSU912  Dichelostemma ida-maia J. W. Tilden 1946-6-20 1008 Humboldt Bluff Creek c. 1.5 mi above junction with Klamath River Comment
  UC1198179  Dichelostemma ida-maia Frank A. Graham 1935-7-27 Humboldt lower end Crogan Hole; Trinity Summit 1463 Comment
  CAS-BOT-BC500980  Dichelostemma multiflorum L. B. Kildale 1930-6-1 9752 Humboldt Klamath River at Bluff Creek Comment
  RSA183603  Digitalis purpurea R. D. Modafferi 1965-5-13 75 Humboldt 0.2 miles north of Trinidad on Trinity Street. 305 Comment
  IRVC2496  Disporum smithii R. H. Whittaker, W. A. Niering U Humboldt Humboldt Redwoods State Park. Comment
  HSC90915  Distichlis spicata Leonel Arguello 1989-7-15 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, Saltmarsh trail. Comment
  HSC17858  Dodecatheon hendersonii D. E. Anderson 1965-5-1 3573 Humboldt Along Bluff Creek road about 2.5 mi. from its junction with Hwy. 96 Comment
  UC1222171  Dodecatheon jeffreyi Joseph P. Tracy 1951-6-14 19406 Humboldt Snow Camp 1402 Comment
  RSA32864  Downingia yina A. A. Heller 1923-7-8 13771 Humboldt Near Fortuna Comment
  HSC57990  Draba howellii G. L. Clifton, Terry Griswold 1979-7-31 11738 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1199179  Draba verna Joseph P. Tracy 1932-5-1 9841 Humboldt along Van Duzen River (Alton); North Coast Ranges, along Van Duzen River 30 Comment
  HSC18764  Drymocallis glandulosa J. E. Lankila 1962-5-6 10 Humboldt West bank of Eel River across form Shively about 500 ft. from Bear Creek Comment
  UC154498  Drymocallis glandulosa var. wrangelliana Mrs. M. H. Manning 1900-1 Humboldt Hoopa Comment
  HSC48406  Drymocallis lactea var. lactea Brad Klipfel 1973-6-10 107 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57995  Drymocallis lactea var. lactea G. L. Clifton, Griswold 1979-7-31 11758 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  JEPS337  Dryopteris arguta Wm. K. D. Reynolds August, 1933 Humboldt Riceland Comment
  HSC65126  Dysphania ambrosioides J. P. Smith 1971-10-6 4983 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC183454  Echinochloa crus-galli Joseph P. Tracy 1900-11-1 973 Humboldt Eureka; Northern Coast Region 0 Comment
  UC213005  Eleocharis bella Joseph P. Tracy 1920-8-15 5373 Humboldt Klamath River at Bluff Creek Northern Coast Ranges 152 Comment
  UC666920  Eleocharis bella Joseph P. Tracy 1935-7-17 14108 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC90810  Eleocharis macrostachya Gail Newton 1982-6-10 3594 Humboldt Elk River Wildlife Area, Eureka Comment
  UC1103655  Eleocharis macrostachya Joseph P. Tracy 1935-8-25 14750 Humboldt Stone Lagoon 3 Comment
  CAS-BOT-BC113168  Eleocharis palustris Joseph Prince Tracy 1934-7-14 13400 Humboldt Blue Lake, along Mad River 15 Comment
  RSA246895  Eleocharis radicans Robert F. Thorne, Percy C. Everett 1965-8-9 35342 Humboldt Along Highway 101 about 3 miles north of Eureka. 2 Comment
  HSC58669  Elymus elymoides var. elymoides Gilbert Muth 1979-8-1 12101 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  HSC39175  Elymus glaucus D. E. Anderson, J. P. Smith 1971-6-28 - 1227 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC58631  Elymus glaucus Overton, Butler 1979-7-31 11485 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  UC1103476  Elymus glaucus Joseph P. Tracy 1936-6-9 14889 Humboldt Bear River Ridge 457 Comment
  UC526798  Elymus glaucus Joseph P. Tracy 1926-6-20 7652 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  CAS-BOT-BC203473  Elymus glaucus subsp. glaucus Joseph P. Tracy 1934-7-9 13336 Humboldt Near Harris 762 Comment
  CAS-BOT-BC234112  Elymus multisetus Joseph P. Tracy 1933-7-25 12893 Humboldt Grouse Mountain 1524 Comment
  HSC102237  Elymus multisetus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1161 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC38212  Elymus multisetus Joseph Burtt Davy 1899-6-19 5661 Humboldt Hoopa Mt. Comment
  RSA10129  Elymus trachycaulus subsp. trachycaulus Joseph P. Tracy 1926-7-5 7736 Humboldt Valley of South Yager Creek. 762 Comment
  UC1122552  Epilobium brachycarpum H. L. Person 1932-8-8 Humboldt Freshwater Eureka Quadrangle Comment
  UC146118  Epilobium ciliatum subsp. ciliatum J. P. Tracy 1902-7-20 1752 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC99304  Epilobium ciliatum subsp. glandulosum Jimerson, J. Pageau 1979-8-10 743 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  UCD20169  Epilobium ciliatum subsp. glandulosum J. M. Tucker 1948-9-3 1858 Humboldt Clear Lake, near junction of Friday Ridge Road and Horse Mountain-Grouce Mountain Road. Comment
  UC583056  Epilobium ciliatum subsp. watsonii P. A. Munz 1936-8-13 14385 Humboldt roadside ditch Clam Beach Comment
  SEINET200781  Epilobium foliosum Joseph P. Tracy 1930-6-21 8786 Humboldt Northern Coast Ranges; Larrabee Valley 701 Comment
  UC1197005  Epilobium glaberrimum subsp. glaberrimum Joseph P. Tracy 1920-8-15 5381 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  RSA181877  Epilobium hallianum Joseph P. Tracy 1931-6-28 9589 Humboldt Northern Coast Ranges: Buck Mountain, lower foothills of its northwest slope 762 Comment
  HSC67369  Epilobium minutum Thomas W. Nelson, James Nelson 1980-6-10 5412 Humboldt Along Swayback Ridge Rd. 2.5 mi. N of junction of Rd. 1S07 1463 Comment
  UC20073  Epilobium minutum Harley P. Chandler June, 1901 1307 Humboldt Hupa Indian Reservation North Coast Ranges Comment
  HSC45063  Epilobium minutum R. Sutherland 1978-4-23 17 .23478 Humboldt Kinsey Ridge near head 732 Comment
  RSA70055  Epipactis gigantea Frank W. Peirson 1923-7-9 3697 Humboldt State Park on Eel River Comment
  UC503057  Equisetum arvense Doris Kildale Aug. 1925 Humboldt Trinity Summit 1524 Comment
  SEINET181172 Image available Equisetum telmateia Bassett Maguire, R Maguire; C. B. Maguire 1934-6-8 15055 Humboldt Bolling Grove State Park ; Bolling Grove State Park Comment
  UC1187363  Equisetum telmateia subsp. braunii P. C. Hutchison 1961-3-3 885 Humboldt 1/2 ,i s Benbow (Hwy. 101, S. Fork Eel River) Comment
  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
  UC1145099  Eragrostis mexicana subsp. virescens Joseph P. Tracy 1950-9-22 19372 Humboldt 8 mi below Orleans; Klamath River near Slate Creek 121 Comment
  UCR52249  Erechtites argutus H. E. Parks 1937-1 24033 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  HSC78606  Erechtites glomeratus L. P. Janeway 1984-5-16 793 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd. just N of the boat ramp 3 Comment
  UC502962  Eremocarpus setiger Joseph P. Tracy 1927-10-23 8390 Humboldt McClellan Mountain Northern Coast Ranges 762 Comment
  RSA145330  Erica lusitanica T. C. Fuller 1961-3-22 5938 Humboldt Humboldt County: N slope Humboldt Hill Comment
  CAS-BOT-BC298298  Ericameria nauseosa var. speciosa Joseph P. Tracy 1929-8-18 8652 Humboldt Larrabee Valley 701 Comment
  UC169294  Erigeron annuus Joseph P. Tracy 1912-7-4 3724 Humboldt near Hydesville (in orchard); Northern Coast Region 60 Comment
  UCR51767  Erigeron bloomeri var. nudatus H. E. Parks 1937-1 24- 22 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC296113  Erigeron foliosus var. confinis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC58125  Erigeron klamathensis Gilbert Muth 1979-8-1 12111 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1878 Comment
  HSC74424  Erigeron klamathensis Gail Newton 1980-7-24 1766 Humboldt Near Somes Mtn. 1615 Comment
  UC87680  Erigeron maniopotamicus J. W. Blankinship 1893-7-1 Humboldt Mad River Comment
Read comments
Sep 3 2011
  CAS-BOT-BC214586  Erigeron philadelphicus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's [Patricks] Point State Park Comment
  HSC5526  Erigeron philadelphicus W. K. Parks Jun 1932 1381 Humboldt Trinidad Comment
  SEINET4005694 Image available Erigeron philadelphicus O. M. Clark 1932-1 5312 Humboldt South Eureka. Comment
  CAS-BOT-BC300281  Erigeron strigosus var. strigosus Harley P. Chandler 1901-6-1 1402 Humboldt North Coast Ranges. Klamath River 243 Comment
  HSC48395  Eriodictyon californicum Brad Klipfel 1973-6-10 149 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC97578  Eriogonum compositum var. compositum Cara Witte 2007-5-29 140 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile south of cattle guard. 1369 Comment
  SD38694  Eriogonum latifolium Edith A. Purer 1932-7-27 4149 Humboldt Near Samoa, near Arcata Comment
  CAS-BOT-BC259285  Eriogonum lobbii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  CAS-BOT-BC259533  Eriogonum luteolum var. luteolum L. R. Abrams 1916-7-11 6069 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  SEINET6944764  Eriogonum nudum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  CAS-BOT-BC261490  Eriogonum nudum var. nudum A. A. Heller 1924-7-20 13863 Humboldt Along the Eel River at Phillipsville Comment
  HSC98531  Eriogonum nudum var. nudum Cara Witte 2007-7-8 445 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  UC1198138  Eriogonum nudum var. nudum Joseph P. Tracy 1930-6-15 8766 Humboldt Dobbyn Creek 152 Comment
  UC203955  Eriogonum nudum var. nudum Joseph P. Tracy 1918-7-3 4987 Humboldt Wilder Ridge Northern Coast Ranges, Kings Peak Range, Wilder Ridge 762 Comment
  RSA393303  Eriogonum nudum var. pubiflorum H. M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  HSC72976  Eriogonum umbellatum D. K. Imper 1981-8-12 907 Humboldt Near Tish Tang A Tang Creek. 1780 Comment
  JEPS56129  Eriogonum vimineum W. L. Jepson 1932-7-25 16395 Humboldt Old Camp Grant Eel River, Old Camp Grant Comment
  CAS-BOT-BC298514  Eriophyllum confertiflorum Kenneth Clark 1979-6-30 461 Humboldt Shelter Cove. Dead Man's Gulch, on lower terraces 9 Comment
  CAS-BOT-BC301182  Eriophyllum lanatum var. arachnoideum Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  RSA92676  Eriophyllum lanatum var. arachnoideum F. W. Peirson 1926-7-12 7029 Humboldt West slope of Coast Range back of Orick. Comment
  UC1173658  Eriophyllum lanatum var. grandiflorum Joseph P. Tracy 1939-4-29 16241 Humboldt at mouth of Slate Creek (along Klamath River); Klamath River, Slate Creek 121 Comment
  HSC68953  Eriophyllum lanatum var. lanceolatum Jacqueline Greenleaf 1980-7-16 241 Humboldt Near Buck Mountain. 1250 Comment
  CAS-BOT-BC301924  Eriophyllum staechadifolium L. R. Abrams 1916-7-18 6080 Humboldt Arcata to Trinidad Comment
  HSC100406  Eritrichium torreyi Carl C. Marshall 1885-1 5 Humboldt No data. Comment
  HSC79415  Erodium cicutarium Kenneth Clark 1980-3-1 514 Humboldt Hillslope due N from Dead Man's Gulch, near access trail 122 Comment
  HSC44569  Erysimum capitatum var. capitatum Brad Klipfel 1973-7-15 187 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57666  Erysimum capitatum var. capitatum G. L. Clifton, Terry Griswold 1979-7-25 10849 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC73747  Erysimum capitatum var. capitatum M. A. Baker 1980-7-15 2949 Humboldt Near Whiting Ridge. 1341 Comment
  CHSC31281  Erysimum menziesii Mark Stopher 1980-4-2 46 Humboldt On sand dunes of the Samoa peninsula at Humboldt Bay. 4 Comment
  JEPS53584  Erysimum menziesii Joseph P. Tracy 1904-4-24 2031 Humboldt sand dunes of ocean beach Northern Coast Region, Humboldt Bay Comment
  SEINET13723796 Image available Erythranthe moschata Joseph P. Tracy 1908-1 2697 Humboldt Valley of Van Duzen River; opposite Buck Mountain 762 Comment
  HSC104324  Erythronium californicum James Regan, Humboldt Redwood Co., LLC 2007-4-30 22 Humboldt Kneeland, near Kneeland Airport 854 Comment
  HSC26306  Erythronium californicum Thomas W. Nelson 1971-4-24 402 Humboldt Overlooking the E Fork of Willow Creek, S of Hwy. 299 Comment
  HSC65203  Erythronium californicum T. Jimerson, J. Pageau 1979-5-1 445 Humboldt On FS 6N34C, Orleans Ranger District, Orleans Comment
  HSC35276  Erythronium grandiflorum subsp. grandiflorum J. D. Ackerman 1975-6-18 474 Humboldt SW slope of trinity Mtn., Grogan Hole, 6.4 mi. E of junction of Rd. 10N02 and 8N01, 20.4 mi. E of Hoopa and Hwy. 96 1677 Comment
  HSC96197  Erythronium grandiflorum subsp. grandiflorum Jennifer Lumbert, James Robinson 2005-6-15 14 Humboldt NE of Grouse Mtn. 1490 Comment
  JEPS61876  Erythronium revolutum Joseph P. Tracy 1918-5-1 4896 Humboldt Ashfield Butte Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC16768  Eschscholzia californica William J. Ferlatte 1963-4-28 24 Humboldt Near 12th and B St., Arcata Comment
  OBI11797  Eschscholzia californica Carl B. Wolf 1937-6-14 8824 Humboldt North Coast Range, Kneeland prairie 823 Comment
  UC184792  Eschscholzia californica Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3600 Humboldt near Hydesville; Northern Coast Region 60 Comment
  SEINET12102668  Eschscholzia californica J. P. Tracy 1950-1 18750 Humboldt Cape Mendocino. Sandy places at "Devil's Gate." S of point of the Cape 30 Comment
  CDA15444  Euchiton gymnocephalus R. Spadoni 1998-8-15 s.n. Humboldt North Coast; Eureka. Comment
  HSC102197  Euonymus occidentalis var. occidentalis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1111 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UC1198977  Euphorbia spathulata Joseph P. Tracy 1930-6-15 8761 Humboldt Dobbyn Creek 152 Comment
  UC54897  Euphorbia spathulata Chesnut and Drew 1888-7-23 Humboldt Hyampon Comment
  CAS-BOT-BC312210  Eurybia radulina Doris K. Kildale 1926-8-22 2588 Humboldt On Orick - Martin's Ferry Road 716 Comment
  HSC35991  Eurybia radulina Thomas W. Nelson, James Nelson 1975-9-1 2189 Humboldt High Rock State Park Comment
  UC1199327  Euthamia occidentalis Joseph P. Tracy 1939-10-7 16506 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC413866  Fallopia convolvulus Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC65452  Festuca californica J. P. Smith, J. O. Sawyer 1973-5-12 6697 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  SEINET200342 Image available Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt Eureka. 0 Comment
  RSA183629  Festuca californica var. californica D. E. Anderson 1965-5-22 3721 Humboldt About 3 miles south of Bridgeville, on road to Blocksburg. Comment
  HSC70903  Festuca idahoensis R. York 1980-5-18 599 Humboldt Near Black Mtn. 792 Comment
  UC525635  Festuca idahoensis Joseph P. Tracy 1930-7-10 8867 Humboldt Brannan Mountain North Coast Ranges 1219 Comment
  BLMAR23  Festuca myuros Brad Barr June, 1982 23 Humboldt King range, Smith cabin Comment
  HSC72634  Festuca occidentalis J. P. Smith 1977-7-3 9249 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  UC1103722  Festuca occidentalis Joseph P. Tracy 1934-7-18 13422 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC26371  Festuca rubra T. O. Osborne 1970-9-16 62 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC9975  Festuca rubra R. I. Bonn 1965-5-7 24 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  UC1145214  Festuca rubra Joseph P. Tracy 1950-6-17 18837 Humboldt Eureka 3 Comment
  UCD66392  Festuca rubra Joseph P. Tracy 1938-7-4 15986 Humboldt Valley of South Yager Creek. 762 Comment
  CAS-BOT-BC278620  Festuca subulata Henry M. Pollard 1948-7-22 s.n. Humboldt Perch Creek near Orleans Comment
  UC552676  Festuca subulata Joseph P. Tracy 1935-7-27 14295 Humboldt McKay Prairie Trinity Summit 1584 Comment
  UC1103709  Festuca subuliflora Joseph P. Tracy 1937-5-30 15306 Humboldt 5 mi n Blocksburg; Larrabee Creek 457 Comment
  UC1198734  Fragaria Joseph P. Tracy 1935-7-27 14285 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  POM275019  Fragaria chiloensis Lyman D. Benson 1928-7-10 450 Humboldt Clam Beach, Trinidad. 9 Comment
  UC584127  Fragaria chiloensis David D. Keck and J. Clausen 1935-6-16 3390 Humboldt mouth of Little River Comment
  CAS-BOT-BC453517  Fragaria chiloensis John Thomas Howell 1954-4-25 29155 Humboldt Dune Hills, Little River Comment
  HSC31119  Fragaria vesca J. O. Sawyer 1970-6-24 2259 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC55336  Fragaria vesca Griswold, Butler 1979-7-12 7183 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC183556  Fragaria vesca Joseph P. Tracy 1913-6-25 4340 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1949135  Fragaria vesca subsp. californica Barbara Ertter with Thomas J. Delendick 1987-5-16 6933 Humboldt 3 mi E of Berry Summit on Hwy 299, ca 20 airmiles E of Arcata; on S side of road above Willow Creek Comment
  HSC61635  Fragaria virginiana Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte Co. line, Onion Lake 1067 Comment
  CAS-BOT-BC52733  Frangula californica subsp. californica L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road Comment
  CAS-BOT-BC53400  Frangula californica subsp. occidentalis Joseph P. Tracy 1941-9-4 17012 Humboldt Willow Creek Canyon, along Trinity Highway 609 Comment
  CAS-BOT-BC59995  Frangula purshiana L. B. Kildale 1931-8-23 s.n. Humboldt Snow Camp. 1219 Comment
  HSC89485  Frangula purshiana P. A. Daly 1984-5-13 19 Humboldt Along trail at Trinidad Head 61 Comment
  UCD112832  Frangula purshiana T. I. Storer 1931-7-1 2219 Humboldt northwest coast of county. Comment
  HSC16198  Fraxinus latifolia C. B. Wolf 1927-8-30 1246 Humboldt 3 mi. S of Thorn along old coast road Comment
  UC1173690  Fraxinus latifolia Joseph P. Tracy 1939-5-6 16279 Humboldt opposite mouth of Willow Creek; Trinity River Valley, Lack Pond 152 Comment
  HSC15550  Fritillaria affinis Greg Bos 1965-5-15 275 Humboldt Berry Summit near Hwy. 299 793 Comment
  UC1197625  Fritillaria affinis Joseph P. Tracy 1933-6-13 12575 Humboldt Hoopa Mountain, near summit on road from Hoopa westward to Bair's Hoopa Mountain 1066 Comment
  UC176688  Fritillaria affinis Joseph P. Tracy 1913-6-17 4179 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC43114  Fritillaria affinis Maralyn O'Meara 1974-5-14 362 Humboldt Beside Hwy. 36, 14.2 mi. E of Bridgeville 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
  SEINET8773683  Fumaria capreolata R. R. Halse 2013-3-28 8767 Humboldt Eureka, at a Texaco station near 3543 Broadway Street (US Hwy 101) and its intersection with McCullens Avenue. 6 Comment
  UC602525  Galium ambiguum var. siskiyouense Joseph P. Tracy 1925-5-30 7026 Humboldt Laribee Valley Northern Coast Ranges 731 Comment
  JEPS6703  Galium bolanderi Joseph P. Tracy 1937-7-24 15530 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC602510  Galium bolanderi Joseph P. Tracy 1935-7-29 14339 Humboldt exposed places near Ranger Station; Trinity Summit 1828 Comment
  HSC19797  Galium bolanderi Lauramay T. Dempster, G. L. Stebbins 1963-7-9 3853 Humboldt 1/2 mi. E of Dinsmore on Hwy. 36 732 Comment
  SEINET6991542  Galium californicum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Open burnt timber, saddle near east end of Bald Hills, southeast of Orick. Comment
  HSC57324  Galium mexicanum var. asperrimum Overton, Butler 1979-7-24 9587 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  UC169003  Galium mexicanum var. asperulum Joseph P. Tracy 1908-6 2861 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS52848  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3858 Humboldt 6.8 mi w mouth of Bull Creek; Bull Creek (settlement) 91 Comment
  UC1196102  Galium parisiense Joseph P. Tracy 1916-6-19 4719 Humboldt at Forks of Dobby Creek Northern Coast Ranges 182 Comment
  HSC61873  Galium parisiense Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  OBI9919  Galium parisiense Rimo Bacigalupi, G. T. Robbins 1954-6-28 4654 Humboldt Along hwy, high above Trinity River, 7.4 mi N of Hoopa, 4.6 mi S of Weitchpec. Six Rivers natl Forest Comment
  UC602520  Galium porrigens Joseph P. Tracy 1926-4-11 7406 A Humboldt Bridgeville 198 Comment
  HSC100643  Galium trifidum Carl C. Marshall Aug 1886 254 Humboldt Damp woods. Comment
  HSC61962  Galium triflorum Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  JEPS6535  Galium triflorum W. L. Jepson 1932-7-27 16423 Humboldt Bull Creek 106 Comment
  UC169075  Galium triflorum Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5470 Humboldt near Elk Prairie (Fruitland); North Coast Ranges Comment
  JEPS20468  Gamochaeta coarctata Joseph P. Tracy 1936-8-1 15057 Humboldt 6 mi se Blue Lake; Canyon Creek 365 Comment
  RSA44414  Gamochaeta ustulata H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  UC204756  Gamochaeta ustulata Joseph P. Tracy 1918-7-5 5028 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  RSA638992  Gamochaeta ustulata R. F. Thorne 1974-7-29 45067 Humboldt Samoa Dunes: between Humboldt Bay and Pacific Ocean. Comment
  HSC76358  Garrya buxifolia Denis Kearns 1981-6-24 22 Humboldt Near Cedar Camp 1219 Comment
  UC1196891  Garrya buxifolia Joseph P. Tracy 1933-7-11 12676 Humboldt Horse Mountain 1402 Comment
  CAS-BOT-BC188544  Garrya elliptica L. R. Abrams 1916-7-18 6137 Humboldt Trinidad Comment
  CAS-BOT-BC188549  Garrya elliptica J. P. Tracy 1901-2-15 992 Humboldt Immediate vicinity of Eureka 152 Comment
  UC314603  Garrya elliptica Joseph P. Tracy 1925-8-14 7231 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region 6 Comment
  JEPS66732  Garrya fremontii Joseph P. Tracy 1939-1-14 16184 Humboldt Willow Creek; Trinity River Valley 152 Comment
  LA40291  Garrya fremontii Carl B. Wolf; 1930-10-24 1762 Humboldt along Klamath River, 1 mi. above the mouth of Slate Creek 243 Comment
  UCD121163  Garrya fremontii Joseph P. Tracy 1939-1-14 16184 b Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UCSB72519  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
  POM207448  Gastridium phleoides Joseph P. Tracy 1900-9-9 951 Humboldt Bar of Yager Creek, near Hydesville. 61 Comment
  SEINET200332 Image available Gastridium phleoides J. P. Tracy 1912-7-26 3824 Humboldt Kneeland Prairie Comment
  UC185004  Gastridium ventricosum Joseph P. Tracy 1912-7-26 3824 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC562736  Gaultheria ovatifolia Joseph P. Tracy Jul 16 1930-Jul 19 1930 9022 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC22506  Gaultheria shallon R. E. Hafenfeld 1965-5-9 4 Humboldt Jct. of County Rd. and Gold Bluff Beach Rd. Comment
  RSA1367  Gaultheria shallon E. R. Johnson 1929-08 612 Humboldt Eel River. 91 Comment
  UCSB12342  Gaultheria shallon 1961-7-4 Humboldt 4.8 miles east of the North Fork of the Mad River on U.S. 299 685 Comment
  UCSB7320  Gaultheria shallon Phillips, Priscilla 1958-6-9 Humboldt Bishop Pine Lodge, 2 mi. N of Trinidad Comment
  SEINET11996979  Gaultheria shallon F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 293 a Humboldt 2.4 mi W of US 101 on CA 169 from Klamath to Klamath Glen along Klamath River 50 Comment
  UC35398  Gayophytum diffusum subsp. parviflorum Chesnut and Drew Humboldt Comment
  UC562300  Gentiana affinis var. ovata Joseph P. Tracy 1933-10-1 13078 Humboldt hillsides Big Lagoon 91 Comment
  HSC75286  Gentiana plurisetosa J. O. Sawyer, D. A. Thornburgh 1980-9-9 4082 Humboldt Mill Creek Lake and surrounding meadows Comment
  HSC96490  Gentiana sceptrum Gordon Leppig 1997-8-3 635 Humboldt Big Lagoon County Park, Big Lagoon Bog. 3 Comment
  RSA18063  Gentiana sceptrum Carl B. Wolf 1927-8-22 787 Humboldt Big Lagoon. Comment
  UC1197401  Geranium carolinianum Joseph P. Tracy 1926-5-2 7421 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC8640  Geranium dissectum R. D. Modafferi 1965-5-13 103 Humboldt 2.3 mi. N of Trinidad on Trinity St. 305 Comment
  UC275490  Geranium oreganum Joseph P. Tracy 1925-5-17 6976 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC73773  Gilia capitata Gail Newton 1980-7-11 1328 Humboldt Near Red Mtn. 1341 Comment
  UC52441  Gilia capitata subsp. capitata Harley P. Chandler June, 1901 1521 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  CAS-BOT-BC226144  Gilia capitata subsp. pacifica Mrs. G. Earle Kelly 1924-6-1 s.n. Humboldt Castle Island near Crescent City Comment
  CAS-BOT-BC226149  Gilia capitata subsp. pacifica Doris K. Kildale 1927-7-1 3626 Humboldt Alton Hill 30 Comment
  UC907967  Gilia capitata subsp. pacifica Joseph P. Tracy 1936-6-9 14894 Humboldt s of point of Cape Mendocino s of point Cape Mendocino (near ocean shore) 3 Comment
  CHSC52941  Gilia millefoliata L. P. Janeway 1984-4-11 731 Humboldt On the North Spit of Humboldt Bay; Northwest of the boat ramp and north of the Coast Guard Sta. 4 Comment
  HSC59713  Gilia millefoliata Clark L. Miller 1979-5-9 4114 Humboldt Samoa Dunes off Samoa Blvd. Comment
  SEINET10464629  Githopsis specularioides Tracy 1903-5-23 TRACY 1906 Humboldt Alder Point, on Eel River 152 Comment
  HSC17914  Glaux maritima D. E. Anderson 1962-5-10 2207 Humboldt Lanphere's Comment
  UC1197366  Glehnia littoralis subsp. leiocarpa Hattie F. Tracy 1902-6-17 1748 Humboldt sand hills of Ocean Beach at Samoa opposite Eureka Comment
  UC140694  Glehnia littoralis subsp. leiocarpa unknown 1904-8-23 Humboldt peninsula - Eureka Eureka Comment
Read comments
Feb 1 2013
  UCD127515  Glehnia littoralis subsp. leiocarpa Roman Gankin 1965-8-6 550 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UC1108977  Glyceria elata Francia Chisaki and Helen K. Sharsmith 1959-8-22 4756 Humboldt Happy Camp Inner North Coast Ranges (just over Trinity County line) 914 Comment
  UCD66779  Glyceria occidentalis August L. Hormay 1932-5-11 Humboldt Eureka, Arcata Swamp. Comment
  RSA10123  Glyceria striata Joseph P. Tracy 1926-6-6 7558 Humboldt Northern Coast Ranges, Hoopa Mountain, near summit on road west from Hoopa to Bair's. 1067 Comment
  RSA168832  Gnaphalium chilense Joseph P. Tracy 1950-7-15 19044 Humboldt Trinity River, E side, 1 mile N of mouth of Willow Creek. Comment
  HSC58110  Gnaphalium palustre G. L. Clifton, Griswold 1979-8-1 12058 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  POM224403  Gnaphalium sphaericum J. T. Howell 1936-8-29 12888 Humboldt Eel River 16 miles N of Garberville. Comment
  HSC54588  Goodyera oblongifolia Overton, Butler 1979-7-24 9652 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC54649  Goodyera oblongifolia Overton, Butler 1979-7-25 9850 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  UC582587  Gratiola ebracteata Joseph P. Tracy 1935-5-25 13840 Humboldt Fort Seward 106 Comment
  HSC89904  Grindelia hirsutula Leonel Arguello 1989-7-14 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata. Comment
  RSA125369  Grindelia hirsutula Peter H. Raven, Richard Snow 1958-7-21 13659 Humboldt Cape Mendocino Comment
  RSA18609  Grindelia hirsutula Lyman Benson 1937-9-9 9305 Humboldt Coast, 2 miles S of Cape Mendocino. 6 Comment
  SEINET11835894  Grindelia hirsutula var. davyi Unknown 1936-1 13195 Humboldt near Ukiah Comment
  CDA6171  Grindelia stricta var. stricta T. C. Fuller 1961-9-27 7043 Humboldt 1 mile north of Indianola Road, Highway 101, 5 miles north of Eureka. 0 Comment
  RSA34235  Grindelia stricta var. stricta C. B. Wolf 1927-8-28 1184 Humboldt Eureka Bay, on the road to Arcata. Comment
  SEINET10614320 Image available Grindelia stricta var. stricta J. A. Moore, Julian A. Steyermark 1931-8-9 Moore 3686 Humboldt Salt meadows along canal, Eureka. Comment
  HSC56456  Hackelia bella Griswold, Butler 1979-7-12 7233 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC74384  Hackelia bella M. A. Baker 1980-6-28 2473 Humboldt Near Mad River Buttes 1445 Comment
  UC449871  Hackelia bella P. E. Goddard 1906-6 677 Humboldt Sasseck Peak Comment
  UC303042  Hastingsia alba Joseph P. Tracy 1926-6-20 7633 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1463 Comment
  HSC39985  Hedera helix Linda M. Barker 1976-9-3 1687 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC74414  Helenium bigelovii Gail Newton 1980-8-10 2032 Humboldt Near Blake Mtn. 1707 Comment
  UC1199146  Helenium bolanderi Joseph P. Tracy 1934-8-22 15675 Humboldt Table Bluff 91 Comment
  RSA93884  Helenium bolanderi F. W. Peirson 1923-7-11 3910 Humboldt 7 miles north of Arcata. Comment
  HSC49372  Hemitomes congestum T. Jimerson, J. Pageau 1979-6-15 581 Humboldt West of FS 11N21, on the boundary between Sections 27 and 28. 762 Comment
  HSC32149  Hemizonella minima D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5612 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC70841  Hemizonella minima M. A. Baker 1980-6-7 1788 Humboldt Near Brush Mtn. 1128 Comment
  UC176471  Hemizonella minima Joseph P. Tracy 1911-7-7 3436 Humboldt ridge n Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  CAS-BOT-BC306211  Hemizonia congesta subsp. congesta Doris K. Kildale 1927-8-29 3243 Humboldt Cape Mendocino Comment
  CAS-BOT-BC309992  Hemizonia congesta subsp. tracyi Doris K. Kildale 1925-10-1 1697 Humboldt Kneeland Prairie Comment
  CAS-BOT-BC309995  Hemizonia congesta subsp. tracyi Carl B. Wolf 1937-6-14 8813 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  UC180194  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1906-7-4 2530 Humboldt Hydesville 60 Comment
  UC495621  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1932-8-21 10364 Humboldt Chaparral Mt., Three Cabins 457 Comment
  SDSU2260  Heracleum lanatum D. F. Howe 1962-5-22 3301 Humboldt 0.5 mile north of Orick on #101. 30 Comment
  HSC36432  Heracleum maximum John Rehling 1974-7-8 4 Humboldt County park at Big Lagoon Comment
  HSC76200  Heracleum maximum Overton, Butler 1979-8-2 12523 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  CAS-BOT-BC388492  Herniaria hirsuta var. cinerea Henry M. Pollard 1946-8-13 s.n. Humboldt Klamath River, near Orleans Comment
  HSC1203  Hesperocyparis macrocarpa W. R. Brigham 1962-5-3 25 Humboldt Near N end of old Hwy. 101 N of Big Lagoon Rd. Comment
  UC34985  Hesperolinon micranthum Hy-Am Pum July 1888 Humboldt Comment
  SEINET10840490  Heterocodon rariflorum Anderson 1974-6-17 Anderson 5709 Humboldt MCKEOWN RANCH N OF DINSMORE OAK, DOUG FIR WOODLAND. T2N R5E SECS 283334 Comment
  HSC67012  Heterotheca oregona var. rudis J. P. Smith 1971-10-9 4987 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  SEINET3166724  Heterotheca oregona var. rudis Unknown 1986-8-18 8531 Humboldt Garberville. Gravel bar of S fork of Eel River near U.S.-101, at Bear Canyon Rd. Comment
  HSC20191  Heuchera micrantha D. E. Anderson 1962-5-1 2200 Humboldt 1 mi. W of Hoopa Comment
  HSC20194  Heuchera micrantha P. N. Slattery 1963-4-27 44 Humboldt Clam Beach Comment
  HSC44335  Heuchera micrantha Brad Klipfel 1975-6-17 676 Humboldt Horse Mtn. Comment
  UC1198860  Heuchera micrantha Joseph P. Tracy 1911-6-4 3228 Humboldt along Little River (5 mi from the coast); Northern Coast Region 121 Comment
  HSC45609  Heuchera micrantha Diane L. Reed 1978-5-7 66 Humboldt E fork of Willow Creek, 34 mi. from US 101 on state Hwy. 299 Comment
  CAS-BOT-BC420720  Heuchera micrantha var. diversifolia M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  UC1198859  Heuchera micrantha var. diversifolia Joseph P. Tracy 1937-5-30 15304 Humboldt 5 mi n Blocksburg (Larrabee Creek); Larrabee Creek 365 Comment
  HSC55746  Heuchera rubescens G. L. Clifton, Griswold 1979-7-26 10269 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  CAS-BOT-BC312400  Hieracium albiflorum Joseph P. Tracy 1930-7-16 8915 Humboldt Near McKay Camp, South Fork Mountain 1676 Comment
  HSC81659  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1980-7-13 6066 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  UC582413  Hieracium albiflorum Joseph P. Tracy 1930-7-16 8915 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1069597  Hieracium albiflorum H. L. Person 1932-7-16 Humboldt highway n Trinidat; Rock Point Quad. Comment
  JEPS36565  Hieracium bolanderi Joseph P. Tracy 1926-6-20 7638 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  CAS-BOT-BC316003  Hieracium nudicaule Harley P. Chandler 1901-6-1 1489 Humboldt Klamath River 426 Comment
  UC582423  Hieracium nudicaule Joseph P. Tracy 1933-8-6 12952 Humboldt French Camp Ridge 1066 Comment
  CDA28238  Hierochloe occidentalis Wilma Mae Lowary & Norah van Kleeck 1974-8-8 Humboldt Lady Bird Johnson Grove, Redwood National Park, northeast of Orick. 0 Comment
  CDA38204  Hippuris vulgaris E. C. Whitney 1962-7-23 s.n. Humboldt Pepperwood; R. Wallen property. 0 Comment
  HSC95385  Hippuris vulgaris Andrea Pickart 2002-7-19 185 Humboldt Arcata Marsh in Log Pond 10 Comment
  RSA0016046  Hippuris vulgaris L. R. Abrams, R. C. Bacigalupi 1922-6-25 8266 Humboldt Big Lagoon, south of Orick. Comment
  HSC10135  Holcus lanatus D. B. Bader 1963-5-1 12 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101, along the railroad tracks. Comment
  HSC10142  Holcus lanatus R. I. Bonn 1965-5-9 50 Humboldt 4 miles W of Arcata on Lanphere Rd. Comment
  HSC26446  Holcus lanatus T. O. Osborne 1970-9-16 65 Humboldt Prisoner Rock, Trinidad Bay. Comment
  HSC37255  Holcus lanatus Lon Hall 1975-6-19 391 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  SEINET181175 Image available Holcus lanatus Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15060 Humboldt Coolidge, Redwood Park. Comment
  UCD84835  Holcus lanatus Linda M. Barker 1976-6-22 1614 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCR143024  Holcus lanatus M. S. Jussel 1931-5-2 s.n. Humboldt Northwestern Coast; Outer North Coast Ranges, near Garberville 183 Comment
  HSC18682  Holodiscus discolor H. E. Parks, S. T. Parks Jun 1927 257 Humboldt Hartsook 122 Comment
  HSC64190  Holodiscus discolor J. O. Sawyer, M. A. Ericksen 1979-6-23 3378 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC98853  Holodiscus discolor Cara Witte 2008-7-11 871 Humboldt Horse Mountain Botanical Area. 1/2 mi. south from intersection of National Forest 1, Forest Service Roads 6N38 and 6N36. 1413 Comment
  UCD18348  Holodiscus discolor K. Esau 1934-5-6 s.n. Humboldt above Fort Seward. 457 Comment
  UC50691  Hordeum brachyantherum subsp. brachyantherum Joseph Burtt Davy and Walter C. Blasdale 1899-6-17 5606 Humboldt Arcata Arcata (North-Western California) Comment
  UC1103483  Hordeum marinum subsp. gussoneanum Joseph P. Tracy 1936-6-9 14913 Humboldt on the road from Bull Creek to Upper Mattole; Windy Nip Garp 609 Comment
  UC1222317  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1951-6-26 19597 Humboldt n side Board Camp Mountain (extreme head of Redwood Creek) Comment
  SD113612  Hosackia crassifolia var. crassifolia Darley F. Howe 1962-5-22 3305 Humboldt 4.3 miles east of Orick on Bald Mountain Road 609 Comment
  HSC70487  Hosackia oblongifolia var. oblongifolia Gail Newton 1980-7-20 1616 Humboldt Near Bell Swamps 1426 Comment
  SBBG64581  Hydrocotyle ranunculoides A. Keedy 1988-9-20 13 Humboldt Arcata Salt Marsh Project Comment
  UC1239759  Hydrophyllum fendleri var. albifrons Joseph P. Tracy 1932-7-11 10422 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  HSC56350  Hydrophyllum occidentale Griswold, Butler 1979-7-10 6300 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  JEPS1638  Hydrophyllum tenuipes Lincoln Constance 1934-5-26 650 Humboldt North Dyerville Flat grove near Founder's Tree (South Fork Eel River, Bull Creek Region); Bull Creek Region, South Fork Eel Riv 48 Comment
  HSC91879  Hypericum anagalloides E. Mackey 1987-8-29 Humboldt Patrick's Point State Park, in woods near Palmer's Point Comment
  RSA246853  Hypericum calycinum R. F. Thorne, P. C. Everett, K. Thorne 1965-8-9 35315 Humboldt Clam Beach County Park: along highway. 3 Comment
  SEINET6178743  Hypericum perforatum James P. Smith 1973-5-26 6830 Humboldt Scotia Bluffs along the Eel River near Rio Dell.; 0 Comment
  UC179926  Hypericum perforatum Joseph P. Tracy 1914-9-7 4618 Humboldt On Bald Mt. near Bald Mt. House; Northern Coast Ranges, Bald Mt. 914 Comment
  HSC100439  Hypochaeris glabra Carl C. Marshall May 1885 44 Humboldt Roadsides, etc. Comment
  SEINET11860415  Hypochaeris radicata Unknown 1933-8-6 s.n. Humboldt Eureka Comment
  CAS-BOT-BC206836  Iliamna latibracteata L. B. Kildale 1930-8-10 10535 Humboldt Snow Camp, head of Redwood Creek Comment
  UCR39771  Ipomopsis aggregata subsp. formosissima D. K. Imper 1983-7-7 s.n. Humboldt In Groves Prairie. 1300 Comment
  HSC13868  Iris douglasiana K. P. St. John 1965-4-3 9 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  HSC79519  Iris douglasiana Kenneth Clark 1980-3-1 519 Humboldt Middle terrace, Dead Man's Gulch, Shelter Cove 43 Comment
  JEPS17227  Iris douglasiana Joseph P. Tracy 1939-6-17 16311 Humboldt vicinity Carlotta 30 Comment
  CAS-BOT-BC123359  Iris humboldtiana Alice Eastwood; John Thomas Howell 1937-6-24 4857 Humboldt Road to Horse Mt. Comment
  UC719144  Iris macrosiphon F. G. Meyer 1938-4-6 1390 Humboldt about 10 mi n Garberville Comment
  BLMAR624  Iris purdyi Jennifer Wheeler 2011-6-1 624 Humboldt Lacks Creek, Bair rd near pickle springs 609 Comment
  HSC45312  Iris tenax subsp. klamathensis R. York 1978-5-11 164 Humboldt Along logging road off Bark Shanty Rd., 4 mi. above Orleans Comment
  RSA275383  Iris tenax subsp. klamathensis J. P. Smith, J. O. Sawyer, J. Cole 1978-5-21 9925 Humboldt Ishi Pishi Road, 2.5 miles from its junction with Route 36 in Orleans. 213 Comment
  HSC39393  Iris tenuissima D. E. Anderson, J. P. Smith 1971-7-6 - 1280 Humboldt Horse Mtn. Comment
  HSC41278  Iris tenuissima Brad W. Klipfel 1974-6-25 434 Humboldt Horse Mtn., NW of the towers Comment
  HSC92109  Isoetes echinospora L. Carufel 1973-8-16 Humboldt Growing in Divide Lake Comment
  CAS-BOT-BC112459  Isolepis cernua Carl B. Wolf 1927-8-22 790 Humboldt Big Lagoon Comment
  CAS-BOT-BC112454  Isolepis cernua R. Becking 1985-5-5 s.n. Humboldt North Spit; US Coast Guard Dunes. 500-700 ft NE from light beacon at base of North Jetty. 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
  CHSC31324  Juncus balticus subsp. ater Mark Stopher 1980-6-4 92 Humboldt Near Hwy 101 bridge over Elk River, s of Eureka. 1 Comment
  UC184214  Juncus bolanderi Joseph P. Tracy 1900-9-3 940 Humboldt Eureka Northern Coast Region 0 Comment
  HSC23673  Juncus bolanderi Tim Baroni 1971-6-25 56 Humboldt Comment
  HSC91873  Juncus bufonius E. Mackey 1987-7-19 Humboldt Patrick's Point State Park Comment
  JEPS66935  Juncus bufonius W. L. Jepson 1921-8-7 9327 Humboldt Stone Lagoon Comment
  UC184195  Juncus bufonius Joseph P. Tracy 1914-7-5 4573 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC1103671  Juncus bufonius var. bufonius Joseph P. Tracy 1914-5-14 4440 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC67957  Juncus confusus Steve Selva, J. P. Smith 1970-6-30 4110 Humboldt Comment
  HSC71730  Juncus effusus subsp. pacificus M. A. Baker 1980-6-26 2450 Humboldt Near Sims Creek 610 Comment
  UC1103039  Juncus ensifolius Joseph P. Tracy 1926-6-27 7665 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  HSC102214  Juncus exiguus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1130 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC1152090  Juncus falcatus subsp. sitchensis Joseph P. Tracy 1930-10-13 9218 Humboldt n end Humboldt Bay Comment
  CHSC105160  Juncus lescurii Peter F. Zika 2008-11-3 24275 Humboldt Sunny meadow just above salt marsh, with Juncus breweri, Festuca arundinacea, Baccharis, Ammophila, mouth of Elk River NW of Route 101 bridge, 2 air km S of Eureka; North Coast (NCo) 2 Comment
  UC249746  Juncus occidentalis Joseph P. Tracy 1923-6-19 6295 Humboldt Upper Mattole Valley Northern Coast Ranges 152 Comment
  RSA126572  Juncus patens H. S. Yates 1936-6-23 5858 Humboldt 2 miles southeast of mouth of Mad River. 305 Comment
  SEINET11788735  Juncus phaeocephalus J. P. Tracy 1934-1 13391 Humboldt Dow's Prairie 61 Comment
  UC1152147  Juncus phaeocephalus var. paniculatus Joseph P. Tracy 1938-7-24 16086 Humboldt corner of Pacific and A Streets Eureka Comment
  HSC57962  Juncus tenuis G. L. Clifton, Terry Griswold 1979-7-31 11667 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  SEINET10796051 Image available Juncus tenuis Unknown 1883-1 Rattan s.n. Humboldt Comment
  HSC56961  Juncus xiphioides Overton, Butler 1979-7-23 9475 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  JEPS67133  Juncus xiphioides Joseph P. Tracy 1915-9-12 4671 Humboldt Mouth of Laribee Creek Northern Coast Ranges 60 Comment
  RSA42044  Juncus xiphioides H. C. Cantelow 1936-8-28 1641 Humboldt 4 miles W of Dinsmore Ranch. Comment
  CAS-BOT-BC235888  Keckiella corymbosa L. Constance 1936-7-17 1807 Humboldt Open bank between Dyerville & Bull Creek Flat, Humboldt State Redwood Park Comment
  UC566682  Keckiella corymbosa H. L. Mason 1928-7-14 4900 Humboldt near Garberville; East Fork of the Eel River Comment
  UC582862  Keckiella corymbosa P. A. Munz 1936-8-9 14328 Humboldt 5 mi n Humboldt-Mendocino County line (south fork of Eel River); Eel River Comment
  UC719827  Keckiella corymbosa Rogers McVaugh 1941-8-3 6213 Humboldt ca 8 mi s Garberville; Richardson Grove State Park Comment
  HSC56112  Kelloggia galioides G. L. Clifton 1979-7-31 11876 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1223072  Lactuca serriola Joseph P. Tracy 1949-8-8 18402 Humboldt at Willow Creek (in Frank Graham's orchard); Trinity River Valley 152 Comment
  CDA39235  Lagophylla ramosissima D. Juliano 2013-8-1 PDR# 120 P06003679 Humboldt Vicinity of Carlotta, along Yager Creek, near Hwy. 36 & Central Ave. Comment
  UC668198  Lagophylla ramosissima Joseph P. Tracy 1938-7-4 15993 Humboldt Valley of South Yager Creek 762 Comment
  UC1223224  Lapsana communis Joseph P. Tracy 1944-7-3 17482 Humboldt Graham's Peach Orchard, along road near old house, at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  UC204782  Lapsana communis Joseph P. Tracy 1918-6-23 4957 Humboldt outskirts of Arcata, around Humboldt bay Northern Coast Ranges, Humboldt Bay 60 Comment
  POM161459  Lasthenia glaberrima Joseph P. Tracy 1916-6-19 4720 Humboldt Dobbyn Creek Comment
  JEPS98949  Lathyrus biflorus Kenneth W. Fuller 1998-7-2 Humboldt Red Mountain (type locality) Comment
  HSC86123  Lathyrus glandulosus S. L. Broich 1981-6-9 1146 Humboldt 8.5 km NE of Freshwater-Kneeland Rd. on the road to Maple Creek Comment
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Nov 6 2012
  UC1199077  Lathyrus jepsonii var. californicus Joseph P. Tracy 1927-5-8 7987 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  UC495707  Lathyrus jepsonii var. californicus Joseph P. Tracy 1927-5-30 8091 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  HSC14738  Lathyrus littoralis Norman H. Moe 1962-5-3 Humboldt Lanphere's Place Comment
  HSC14744  Lathyrus littoralis J. W. Johnson 1962-5-6 1326 Humboldt W.M. Lanphere Farm, Samoa Peninsula. Comment
  SBBG3353  Lathyrus littoralis H. and M. Dearing 1939-5-25 3435 Humboldt near Samoa Comment
  BLMAR60  Lathyrus littoralis Jennifer Anthony-Wheeler 1994-3-31 60 Humboldt King range, growing on matole beach1/4miS of campground.dense mat of like individuals 12 Comment
  HSC14741  Lathyrus littoralis Francis Winter 1960-5-14 Humboldt Samoa Peninsula Comment
  HSC64214  Lathyrus nevadensis var. nevadensis J. O. Sawyer, M. A. Ericksen 1979-6-23 3387 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UC495706  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1932-7-16 10641 Humboldt McKay Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UCD106342  Lathyrus polyphyllus A. Murphy 1951-5-15 s.n. Humboldt Half mile S. of South Fork on McCann Road. Comment
  UC15347  Lathyrus polyphyllus H. N. Bolander 1866-1 6508 Humboldt Little Bear Harbor Comment
  CAS-BOT-BC325997  Layia carnosa Tom Craig 1941-6-29 s.n. Humboldt Samoa Comment
  HSC5913  Layia carnosa J. P. Tracy 1917-5-30 4796 Humboldt Mouth of Little River. 6 Comment
  UC165025  Layia carnosa J. P. Tracy 1901-4-14 1017 Humboldt opp. Eureka Samoa Comment
  UC30591  Layia carnosa J. P. Tracy 1901-4-17 Humboldt Samoa; Humboldt Bay Comment
  CAS-BOT-BC89165  Lepidium draba Joseph P. Tracy 1933-5-19 12201 Humboldt Eel River. Alton to Fortuna. 15 Comment
  RSA0096840  Leptosiphon filipes Joseph P. Tracy 1950-5-30 18710 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  RSA12525  Leptosiphon nuttallii C. B. Wolf 1934-7-3 5911 Humboldt 21 miles from Orick on road to Weitchpec. 152 Comment
  UCR122385  Lessingia filaginifolia var. californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6996 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC79326  Lessingia nemaclada D. K. Imper 1982-8-27 Humboldt 1.5 mi. S of junction with FS 2S05 on FS 8E05, Six Rivers National Forest. Comment
  CAS-BOT-BC334614  Leucanthemum vulgare L. R. Abrams 1922-6-25 8236 Humboldt 2 miles south of Fortuna Comment
  CAS-BOT-BC334619  Leucanthemum vulgare L. R. Abrams; R. Bacigalupi 1922-6-25 8262 Humboldt Between Trinidad and Big Lagoon Comment
  JEPS5842  Lewisia nevadensis Joseph P. Tracy 1932-7-10 10377 Humboldt Corral Prairie Trinity Summit 1584 Comment
  SEINET200615 Image available Lewisia nevadensis Joseph P. Tracy 1932-7-10 10377 Humboldt Trinity summit open places at Corral Prairie 1585 Comment
  CAS-BOT-BC283514  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
  HSC49055  Ligusticum californicum Patricia Shesgreen 1978-8-2 123 Humboldt Arcata Community Forest, 100 yds N of field house, 25 ft from pond 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
  UC906664  Ligusticum californicum Joseph P. Tracy 1949-8-11 18482 Humboldt 2 - 6 mi. s.. from Grouse Mt. (Kinsey Ridge); Kinsey Ridge 1341 Comment
  SEINET11764870  Lilaea scilloides J. P. Tracy 1950-6-18 18844 Humboldt Davis Creek, Cape Mendocino, S of point of the Cape 30 Comment
  HSC21520  Lilaeopsis occidentalis R. W. Spjut 1968-10-26 215 Humboldt Big Lagoon County Park, SW corner of Big Lagoon. Comment
  HSC95380  Lilaeopsis occidentalis Andrea Pickart 2002-7-9 170 Humboldt Bracut Marsh at freshwater outlet into salt marsh 10 Comment
  CAS-BOT-BC130511  Lilium bolanderi Tom Craig 1941-6-20 s.n. Humboldt Joyell Mine, 10 miles east of Green City Comment
  CAS-BOT-BC508394  Lilium columbianum Mrs. L. B. Kildale 1925-6-7 s.n. Humboldt Between Trinidad Head and Orick Comment
  CAS-BOT-BC508399  Lilium columbianum L. R. Abrams 1922-6-25 8252 Humboldt Arcata Comment
  POM87955  Lilium columbianum Le Roy Abrams, Rimo C. Bacigalupi 8260 Humboldt Between Trinidad and Big Lagoon Comment
  HSC76429  Lilium kelleyanum Denis Kearns 1981-7-23 396 Humboldt Near Whiteys Peak. 1524 Comment
  CAS-BOT-BC130636  Lilium kelloggii A. M. Vollmer; L. Beane 1951-6-1 148 Humboldt On road to Bald Mountain, east of Korbel 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
  RSA74745  Lilium kelloggii Albert M. Vollmer, L. Beane 1951-06 s.n. Humboldt On trail to Blohns cabin, Bald Mountain, east of Korbel Comment
  UC1198238  Lilium occidentale Joseph P. Tracy 1912-7-25 3811 Humboldt Kneeland Prairie Northern Coast Ranges (near Skinner's Mill) 762 Comment
  SEINET3992216  Lilium pardalinum Unknown 1908-6-27 2868 Humboldt Valley of Van Duzen River, opposite Buck Mountain 305 Comment
  JEPS62038  Lilium washingtonianum subsp. purpurascens Hilda W. Grinnell 1932-7-22 38 Humboldt .37 mi beyond Blake Lookout (U.S.G.S. signal rock); South Fork Mt. 1767 Comment
  SD42236  Limnanthes douglasii Carl B. Wolf 1937-6-14 8818 Humboldt Kneeland Prairie 822 Comment
  UC1197413  Limnanthes douglasii Joseph P. Tracy 1922-5-29 6064 Humboldt Head of South Yager Creek Northern Coast Ranges 762 Comment
  HSC17100  Limnanthes douglasii subsp. nivea William J. Ferlatte, B. D. Rogers 1966-6-15 2106 Humboldt Larabee Valley 762 Comment
  CHSC89511  Limnobium laevigatum Gordon Leppig; T. LaBanca 2003-3-13 1823 Humboldt Arcata, Alder Grove Pond. On south shore of wetland. UTM Zone 10, 428185 N, 410100 E. 9 Comment
  POM319075  Limonium californicum Patricia Wilder 1968-8-21 4411 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  UC908601  Linanthus acicularis Joseph P. Tracy 1932-5-1 9855 Humboldt near Garberville; Redway 182 Comment
  UC1198591  Linanthus androsaceus Joseph P. Tracy 1923-6-3 6252 Humboldt Kneeland Prairie 762 Comment
  UC54709  Linanthus androsaceus Joseph Burtt Davy and Walter C. Blasdale 1899-5 5371 Humboldt near Harris Comment
  UC1198545  Linanthus bolanderi Joseph P. Tracy 1911-7-7 3393 Humboldt 2 mi nw junction of Willow Creek with Trinity River (near the Beebe's Ranch) 914 Comment
  UC1198586  Linanthus ciliatus Joseph P. Tracy 1914-5-14 459 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UC23540  Linanthus filipes Harley P. Chandler Jun 1901 1309 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  JEPS11331  Linaria vulgaris Joseph P. Tracy 1921-7-23 5858 Humboldt Dows Prairie, thence to Trinidad Dows Prairie Dows Prairie; Northern Coast Ranges, Dows Prairie 60 Comment
  HSC34281  Linnaea borealis subsp. longiflora K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC76247  Linnaea borealis subsp. longiflora Teresa Prendusi 1981-7-7 122 Humboldt Near Slate Creek Butte. 1158 Comment
  HSC15802  Linum bienne F. B. Plett 1963-4-9 15 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  HSC46136  Linum bienne J. P. Smith 1971-10-6 4964 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC46165  Linum bienne J. P. Smith 1971-10-9 5008 Humboldt Mad River above the Fish Hatchery. Comment
  HSC89417  Linum bienne P. A. Daly 1986-1-20 46 Humboldt Trinidad Head, along trail 61 Comment
  HSC55228  Listera convallarioides G. L. Clifton, Griswold 1979-8-2 12428 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC45233  Listera convallarioides Thomas W. Nelson, Jane P. Nelson 1977-7-4 3604 Humboldt Alder Springs 1524 Comment
  UC1196367  Lithocarpus densiflorus Joseph P. Tracy 1921-10-2 5964 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA174006  Lithocarpus densiflorus var. densiflorus Robert F. Thorne 1957-9-2 19010 Humboldt Sandy margin of branch of the Eel River at Burlington State Park, just S of Weott. Comment
  RSA273403  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson, Jane Nelson 1976-2-21 2247 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. west of Hoopa. Comment
  UC1225788  Lithocarpus densiflorus var. echinoides Joseph P. Tracy 1948-9-20 18224 Humboldt Willow Creek Canyon; along Trinity Highway 457 Comment
  UC902095  Lithophragma Joseph P. Tracy 1946-6-23 17591 Humboldt Kneeland Prairie 762 Comment
  UC154055  Lithophragma affine Joseph P. Tracy 1908-6-9 2659 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC102632  Lithophragma campanulatum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1617 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC32287  Lithophragma campanulatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5633 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC32143  Lithophragma heterophyllum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5607 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC167234  Lolium multiflorum Jos. Burtt Davy and W. C. Blasdale 1899-7-30 6201 Humboldt Russ Ranch Comment
  HSC74113  Lolium perenne M. A. Baker 1980-6-16 1941 Humboldt Near Monks Camp. 1097 Comment
  HSC100392  Lomaria spicant Carl C. Marshall Apr 1885 116 Humboldt Damp woods. Comment
  HSC34919  Lomatium dissectum var. dissectum Thomas W. Nelson, James Nelson 1975-5-24 1855 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC63842  Lomatium macrocarpum M. A. Baker 1979-6-26 910 Humboldt S facing ridge Comment
  HSC74381  Lomatium macrocarpum M. A. Baker 1980-6-28 2477 Humboldt Near Mad River Buttes 1445 Comment
  UC647479  Lomatium tracyi Joseph P. Tracy 1930-7-10 8869 Humboldt Brannan Mt. 1219 Comment
  OBI81634  Lomatium utriculatum Tracey Call, Viola Call 1964-6-19 2271 Humboldt Dry, west-facing hillside 1 mile north of Harris P.O. and ca 3.5 miles south of Harris Jct. Comment
  UC1222487  Lonicera conjugialis Joseph P. Tracy 1950-8-8 19287 Humboldt Croghan Hole Trinity Summit 1676 Comment
  HSC3942  Lonicera hispidula var. vacillans W. D. Stevens 1967-7-16 44 Humboldt Along dirt rd. from Hwy. 101 to top of N bank of Mad River. Comment
  RSA65775  Lonicera hispidula var. vacillans E. K. Balls, P. C. Everett 1953-10-11 18625 Humboldt 0.1 mi. N of Humbolt-Mendecino Co. line, Hwy 101. 168 Comment
  UC535759  Lonicera hispidula var. vacillans Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  HSC90220  Lonicera involucrata Louise Watson, Jan Meninga Aug 1990 6 Humboldt Mad River Slough and Dunes, 50 ft. N of parking lot, W of trail. Comment
  CAS-BOT-BC241481  Lonicera involucrata var. ledebourii L. R. Abrams 1916-7-18 6129 Humboldt Arcata to Trinidad Comment
  HSC3927  Lonicera involucrata var. ledebourii H. E. Parks May 1936 5675 Humboldt Spruce Cove, Trinidad. Comment
  UC162608  Lotus aboriginus W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  HSC26447  Lotus corniculatus Brad Klipfel 1973-4-28 16 Humboldt Along Canyon Creek, SW of Korbel Comment
  UCD106722  Lotus corniculatus S. P. Lynch 1975-6-19 1368 Humboldt Along U.S. Hwy 101 at Loleta. Comment
  UC162838  Lotus denticulatus Joseph P. Tracy 1908-6 2756 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC15615  Lotus humistratus Harley P. Chandler Jun 1901 1308 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC96219  Lotus humistratus M. Lindquist, C. Riley 2005-6-8 5 Humboldt 1.4 mi. S of Hwy. 299 on Titlow Hill Rd. 914 Comment
  SEINET6932529  Lotus humistratus Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt About 4 miles southeast of Kneeland. Comment
  UC1223429  Lotus micranthus Joseph P. Tracy 1936-6-8 14866 Humboldt near Trinidad 3 Comment
  RSA168892  Lotus oblongifolius Joseph P. Tracy 1936-6-3 14856 Humboldt Lack Pond, in Trinity River Valley, opposite mouth of Willow Creek. Comment
  SEINET12154246  Lotus oblongifolius J. P. Tracy 1936-1 14856 Humboldt Lack Pond, in Trinity River Valley, opposite mouth of Willow Crk 152 Comment
  RSA20787  Lotus oblongifolius var. nevadensis Carl B. Wolf 1937-8-13 9252 Humboldt North Coast Range 11 mi. E. of Hoopa Valley on New Road towards Trinity Summit. 1524 Comment
  JEPS79926  Lotus oblongifolius var. oblongifolius Joseph P. Tracy Jul 16 1930-Jul 19 1930 8997 Humboldt McKay Cmap Northern Coast Ranges, South Fork Mountian 1676 Comment
  JEPS55790  Lotus purshianus var. purshianus Joseph P. Tracy 1923-6-17 6271 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC864751  Lotus purshianus var. purshianus Ira L. Wiggins 1930-7-22 4689 Humboldt between Blue Lake and Willow Creek (along bank of Redwood Creek); Redwood Creek Comment
  JEPS55422  Lotus yollabolliensis Joseph P. Tracy Jul 16 1930-Jul 30 1930 8945 Humboldt near Blake lookout (along summit South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  HSC70698  Luina hypoleuca Gail Newton 1980-7-15 1554 Humboldt Near Sims Mtn. 1311 Comment
  SEINET10490444  Lupinus adsurgens var. adsurgens Chestnut 1888-7-21 CHESTNUT s.n. Humboldt Type photo. W side south fork mountain. Comment
  SEINET5766882 Image available Lupinus affinis J. P. Tracy 1947-1 17677 Humboldt near Briceland Comment
  HSC14775  Lupinus arboreus J. W. Johnson 1961-9-3 1078 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  LA205182  Lupinus arboreus C. B. Wolf; 1930-10-28 1780 Humboldt Samoa, Humboldt Bay 15 Comment
  HSC14799  Lupinus bicolor Jerry Parker 1968-10-7 84 Humboldt Mckinleyville, at the foot of Murray Rd. Comment
  RSA104683  Lupinus densiflorus var. densiflorus Joseph P. Tracy 1911-7-4 3280 Humboldt Valley of Trinity River near mouth of Willow Creek. 152 Comment
  UC157019  Lupinus formosus Joseph P. Tracy 1904-7-4 2113 Humboldt Bucksport; region about Humboldt Bay, Bucksport 0 Comment
  BLMAR167  Lupinus latifolius Donald Hazlett 1994-6-7 167 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC102056  Lupinus latifolius M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 961 Humboldt Patterson Meadows 1555 Comment
  HSC76189  Lupinus latifolius Overton, Butler 1979-7-24 9779 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC99444  Lupinus latifolius var. latifolius K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 94 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  JEPS65077  Lupinus lepidus var. sellulus Joseph P. Tracy 1918-7-5 5021 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  UCD107974  Lupinus littoralis Joseph P. Tracy 1900-7-4 870 Humboldt Ocean Beach at Humboldt Bay. Comment
  UCD109339  Lupinus pachylobus W. Williams 1951-1 s.n. Humboldt Bear Creek Valley. Comment
  UC584126  Lupinus rivularis David D. Keck and J. Clausen 1935-6-16 3391 Humboldt mouth of Little River Comment
  UC502995 Image available Lupinus tracyi Joseph P. Tracy 1932-7-15 10598 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit; Trinity summit, Humboldt Co. 1828 Comment
  UC183719  Luzula comosa Joseph P. Tracy 1912-6-2 3642 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  RSA15576  Luzula comosa Carl B. Wolf 1927-8-28 1167 Humboldt 9 miles from Willow Creek, on the grade of the road to Blue Lake. Comment
  HSC90656  Luzula multiflora subsp. multiflora Gail Newton 1982-5-2 2518 Humboldt Elk River Wildlife Area Comment
  UC1103680  Luzula parviflora Joseph P. Tracy 1925-6-7 7056 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 609 Comment
  SEINET179615 Image available Lycopodium clavatum H. E. Parks, WK Parks 1932-7-30 1132 Humboldt 'Camp 21' Hammond Lumber Company Trinidad Comment
  UC1239796  Lycopodium clavatum Joseph P. Tracy 1932-8-13 10341 Humboldt in woods around swamp 3 mi e Trinidad; Northern Coast Region 152 Comment
  UC505105  Lythrum hyssopifolia Joseph P. Tracy 1927-8-7 8321 Humboldt opposite mouth of Willow Creek (Lack Pond, in Trinity River Valley); Northern Coast Ranges, Trinity River Valley, Lack Pond 152 Comment
  HSC15936  Lythrum hyssopifolia D. E. Anderson 1961-9-2 1761 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  HSC62980  Lythrum hyssopifolia David Wheeler 1979-5-22 128 Humboldt Samoa, intersection of Samoa Blvd. and the railroad tracks near Arcata Redwood Co. Comment
  RSA0015856  Lythrum hyssopifolia J. B. Feudge 1923-7-22 168 Humboldt Fortuna. 15 Comment
  HSC100440  Madia elegans Carl C. Marshall Jun 1885 97 Humboldt Hills. Comment
  HSC35631  Madia elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-8-1 2144 Humboldt Beside Willow Creek just up stream from Hwy. 299 bridge Comment
  CAS-BOT-BC343027  Madia gracilis Doris K. Kildale 1928-6-24 5282 Humboldt Horse Mountain 914 Comment
  HSC71593  Madia gracilis M. A. Baker 1980-6-26 2402 Humboldt Near Sims Creek 610 Comment
  HSC73478  Madia gracilis Gail Newton 1980-7-11 1333 Humboldt Near Red Mtn. 1341 Comment
  POM362191  Madia madioides M. O'Mera 1974-7-1 541 Humboldt Kneeland, Barry Ridge, just off ridge Comment
  HSC78758  Madia sativa L. P. Janeway, Paul Wilson 1984-5-25 816 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  CHSC68509  Maianthemum dilatatum Vernon H. Oswald 1997-4-10 8324 .1 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  UCD139044  Maianthemum dilatatum Linda M. Barker 1976-5-13 1484 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC508518  Maianthemum dilatatum Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC41942  Maianthemum racemosum subsp. amplexicaule Richard G. Runyon 1977-4-23 9 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC58003  Maianthemum racemosum subsp. amplexicaule G. L. Clifton, Griswold 1979-7-31 11788 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC58009  Maianthemum racemosum subsp. amplexicaule G. L. Clifton 1979-7-31 11805 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC511457  Maianthemum racemosum subsp. amplexicaule M. P. Dillingham 1972-4-30 s.n. Humboldt Vicinity of Whitehorn, Douglas fir forest Comment
  HSC70326  Maianthemum stellatum M. A. Baker 1980-6-8 1881 Humboldt Near Buck Flat. 1554 Comment
  RSA0009485  Maianthemum stellatum Marcus E. Jones 1924-4-28 s.n. Humboldt Dyerville. Comment
  CAS-BOT-BC347414  Malacothrix floccifera L. R. Abrams 1916-7-11 6063 Humboldt Mouth of Grizzly Creek between Bridgeville and Fortuna on Van Duzon [Duzen] River Comment
  UC565510  Malacothrix floccifera H. L. Mason 1928-7-14 4906 Humboldt near Garberville; East Fork of Eel River Comment
  HSC98706  Malacothrix floccifera Cara Witte 2007-7-24 572 Humboldt Ammon Ridge Road. 4 miles east of intersection with National Forest 1. 1462 Comment
  UC168942  Marah oregana Joseph P. Tracy 1911-8-27 3532 Humboldt Eureka Northern Coast Region 0 Comment
  RSA79372  Marah oregana E. K. Balls, L. W. Lenz 1952-5-12 17199 Humboldt 0.6 mi E of Dinsmore along Hwy 36 from Alton to Red Bluff. Comment
  UCSB15707  Marah oregana Breedlove, Dennis 1961-7-4 Humboldt North bank of the Mad River, 1 mile east of Blue Lake on U.S. Highway 299 243 Comment
  UC577418  Marrubium vulgare Joseph P. Tracy 1925-5-17 6973 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley near South Fork 182 Comment
  RSA91365  Medicago arabica Joseph A. Ewan 1937-7-2 10458 Humboldt Trinidad to Trinidad Head. Comment
  UC162809  Medicago polymorpha J. P. Tracy 1909-8-15 3076 Humboldt Immediate vicinity of Eureka 0 Comment
  UC1103760  Melica californica Joseph P. Tracy 1950-6-15 18780 Humboldt 5 mi n Harris; Mail Ridge 944 Comment
  UC1145137  Melica californica Joseph P. Tracy 1938-6-9 15886 Humboldt 2 mi nw Harris (Mail Ridge) 914 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
  SEINET200335 Image available Melica californica var. nevadensis J. P. Tracy 1927-5-14 7999 Humboldt Trinity River Valley near the S Fork 183 Comment
  UCD87511  Melica harfordii August L. Hormay 1932-5-12 s.n. Humboldt Bull Creek Road. Comment
  HSC10366  Melica subulata E. W. Styskel 1963-5-16 30 Humboldt 3.0 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  HSC97956  Melica subulata Cara Witte, Michael Scott 2007-6-22 345 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1494 Comment
  SEINET200622 Image available Melica subulata Joseph P. Tracy 1901-5-5 1063 Humboldt Immediate vicinity of Eureka. 0 Comment
  UC1152008  Melica subulata A. H. Murphy 1951-5-15 30 Humboldt 0.5 mi s South Fork of McCann Road Comment
  HSC26919  Melilotus albus Brad Klipfel 1973-7-30 218 Humboldt Samoa Rd., near Mad River Slough Comment
  HSC71570  Melilotus albus J. P. Smith 1971-10-9 5042 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC154012  Mentha canadensis J. P. Tracy 1905-9-3 2391 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC1191796  Mentha canadensis Malcolm A. Nobs, S. Galen Smith 1949-8-3 1186 Humboldt at southern outskirts of Eureka Comment
  JEPS79933  Mentha pulegium Joseph P. Tracy 1933-8-22 12985 Humboldt near Loleta; near Loleta 6 Comment
  UC1239692  Mentha pulegium Joseph P. Tracy 1916-9-5 4772 Humboldt 4 mi above mouth of South Fork of Eel River; South Fork of Eel River 60 Comment
  SEINET10498893  Mentha pulegium Mary Susan Taylor 1977-8-5 Taylor 1429 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  UC166483  Mentzelia laevicaulis var. laevicaulis Joseph P. Tracy 1908-6 2933 Humboldt Opposite Buck Mountain; Northern Coast Ranges,Valley of Van Duzen River 762 Comment
  CAS-BOT-BC348948  Microseris douglasii subsp. douglasii Joseph P. Tracy 1929-5-5 8560 Humboldt Miranda. Along South Fork of Eel River 121 Comment
  JEPS36130  Microseris laciniata subsp. laciniata W. L. Jepson 1934-5-8 16720 Humboldt Redway n South Fork Eel River; Redway Comment
  HSC99590  Microsteris gracilis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 259 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
  RSA167416  Microsteris gracilis subsp. gracilis Joseph P. Tracy 1950-5-7 18648 Humboldt Valley of South Yager Creek 762 Comment
  BLMAR683  Mimulus aurantiacus Jennifer Wheeler 2013-6-7 683 Humboldt King range, Strawberry Rock 35 Comment
  LA209133  Mimulus aurantiacus C. C. & S. K. Harris; 1936-6-9 sn Humboldt Above Carlotta 60 Comment
  HSC26881  Mimulus aurantiacus var. aurantiacus Clifton Raymond Chesbrough 1973-6-19 88 Humboldt 0.5 mi. S of Trinidad along the coast Comment
  JEPS10240  Mimulus aurantiacus var. aurantiacus Joseph P. Tracy 1934-6-19 13235 Humboldt Carlotta 60 Comment
  RSA550829  Mimulus aurantiacus var. aurantiacus David M. Thompson 1992-6-6 1115 Humboldt Just N of Miranda. 0.1 mi s of bridge over Bridge Creek along Hwy 254 (parallels Hwy 101) 101 Comment
  UC1011928  Mimulus aurantiacus var. aurantiacus Francis W. Pennell 1940-7-8 26109 Humboldt above beach s Trinidad; Route 101 30 Comment
  HSC70513  Mimulus cardinalis Thomas W. Nelson, Jane P. Nelson 1977-8-6 3685 Humboldt Along Mad River at Anderson's Ford 640 Comment
  HSC20708  Mimulus dentatus Jack Rockwell 1962-5-5 58 Humboldt W side Jacoby Creek 18 Comment
  SEINET12269811  Mimulus dentatus Unknown 1936-1 13277 Humboldt near Trinidad Comment
  UC175712  Mimulus douglasii Joseph P. Tracy 1913-6-19 4208 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC198662  Mimulus douglasii Joseph P. Tracy 1915-5-20 4639 Humboldt Eureka Northern Coast Ranges Comment
  HSC20761  Mimulus guttatus R. Spellenberg 1964-6-15 407 Humboldt 0.5 mi. S of Humboldt Hill exit, 5 mi. S of Eureka Comment
  JEPS25044  Mimulus inodorus Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  JEPS14946  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15597 Humboldt w slope near top South Fork Mountain (at Hyampom Trail) 1676 Comment
  UC582484  Mimulus pulsiferae Harold E. Parks and Joseph P. Tracy 1934-6-27 11087 Humboldt Grouse Mt. 1432 Comment
  UC427871  Minuartia cismontana H. E. Parks and J. P. Tracy 1930-5-25 866 Humboldt Laribee Valley Comment
  CAS-BOT-BC174682  Minuartia cismontana H. E. Parks; J. P. Tracy 1930-5-25 0866 Humboldt Laribee Valley, Eastern Humboldt Co. Comment
  OBI19559  Minuartia douglasii Carl B. Wolf 1937-6-14 8822 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  CAS-BOT-BC388620  Minuartia douglasii Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. Trail 914 Comment
  SEINET11943610  Minuartia douglasii J. P. Tracy 1950-1 18993 Humboldt 2 mi S of Burr Valley on Albee Road, Bridgeville to Blocksburg 1158 Comment
  HSC24390  Mitella diversifolia J. O. Sawyer 1970-6-24 2252 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  UC673257  Mitella ovalis Lincoln Constance and Reed C. Rollins 1942-5-11 2865 Humboldt near summit 8 mi e Blue Lake; North Coast Ranges Comment
  HSC49620  Mitella ovalis R. York 1979-4-9 212 Humboldt Behind HSU campus Comment
  HSC76262  Mitella trifida Teresa Prendusi 1981-7-21 270 Humboldt Near Whiteys Peak 1646 Comment
  HSC100651  Mitella trifida Carl C. Marshall Mar 1886 153 Humboldt Wet shaded places. Comment
  UC18806  Modiola caroliniana Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6176 Humboldt near Ferndale; North-Western California Comment
  UC673055  Modiola caroliniana Joseph P. Tracy 1940-10-18 16777 Humboldt Trididad 3 Comment
  HSC36497  Moehringia macrophylla Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1894 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC64760  Moehringia macrophylla Bruce Gordon 1980-4-10 141 Humboldt Redwood National Park, 60 m NE of Bald Hills Rd., 0.4 mi. NE of jct. of Bald Hills Rd. and K&K Rd Comment
  HSC97461  Moehringia macrophylla C. Witte 2007-5-21 51 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1419 Comment
  UC13619  Moehringia macrophylla Chesnut and Drew 1888-8-9 Humboldt head of Redwood Creek Comment
  JEPS63387  Monardella purpurea Joseph P. Tracy 1926-6-20 7657 Humboldt Horse Mountain 1310 Comment
  CAS-BOT-BC220258  Monardella sheltonii L. R. Abrams 1918-6-16 7183 Humboldt Willow Creek Comment
  CAS-BOT-BC220256  Monardella sheltonii Carl B. Wolf 1937-8-13 9223 Humboldt North Coast Range, 8 mi. E. of Hoopa Valley on New Road towards Trinity Summit 1219 Comment
  HSC14282  Monardella villosa Paul Shields Jul 1955 Humboldt 3 mi. S of Myers Flat Comment
  HSC102006  Montia chamissoi M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 907 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC99377  Montia chamissoi K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 26 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
  CAS-BOT-BC444799  Montia diffusa Don Hagar 1956-5-14 59 Humboldt Brush Mt., ca. 6 miles sw. of Willow Creek 914 Comment
  UC7839  Montia diffusa Harley P. Chandler May, 1901 1271 Humboldt North Coast Ranges 152 Comment
  BLMAR621  Montia howellii Jennifer Anthony-Wheeler 2009-5-20 521 Humboldt Lacks Creek, On main westside road on vernally wet inboard ditch behind gate 853 Comment
  POM203679  Montia parvifolia I. L. Wiggins 1932-7-7 5879 Humboldt Sand dunes near Samoa Comment
  CDA36322  Muehlenbeckia complexa R. Robison 2011-6-3 Humboldt Trinidad State Beach, across road from Humboldt State Marine Research Center. 0 Comment
  HSC58648  Muhlenbergia filiformis G. L. Clifton, Griswold 1979-7-31 11669 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UCD86802  Muhlenbergia mexicana Joseph P. Tracy 1916-9-5 4774 Humboldt South Fork of Eel River, 4 miles above the mouth. 60 Comment
  UC1222232  Myosotis discolor Joseph P. Tracy 1948-6-13 18036 Humboldt on Larrabee Creek rd. halfway between Bridgeville and Blocksburg Comment
  HSC47657  Myosotis sylvatica Sheila Logan 1978-4-10 180 Humboldt Arcata Community Forest, near PSW Experimental Lab Comment
  POM160282  Myrica californica Joseph P. Tracy 1925-12-13 7335 Humboldt Big Lagoon 6 Comment
  RSA239703  Myrica californica Larry E. DeBuhr 1973-4-23 988 b Humboldt Richardson Grove Redwood State Park. Comment
  UC1585367  Myrica californica R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 18 Humboldt W. of Eureka 0.5 km. S. of Hwy. 255 on New Navy Base Rd., on North spit of Samoa Peninsula. Comment
  HSC41673  Myriophyllum aquaticum Charles O'Neil Humboldt McKinleyville, ponds W of Hwy. 101 Comment
  HSC15607  Narcissus pseudonarcissus D. B. Mitchell 1965-3-13 - 6 Humboldt 0.5 mi. N of US Coast Guard Station on Samoa Rd. Comment
  UC526764  Nassella pulchra Joseph P. Tracy 1926-5-2 7436 Humboldt grassy hillside near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC6893  Nasturtium officinale P. W. Shields 1955-6-16 Humboldt HSU campus Comment
  HSC55854  Navarretia divaricata G. L. Clifton, Griswold 1979-7-25 10837 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  SEINET200374  Navarretia divaricata var. vividior Joseph P. Tracy 1908-7-27 2721 Humboldt Valley of Van Duzen River, opposite Buck Mountain 305 Comment
  POM208984  Navarretia intertexta Lincoln Constance 1934-5-27 697 Humboldt Sandbar of south fork of Eel River at Dyerville bridge 43 Comment
  RSA15549  Navarretia mellita C. B. Wolf 1927-8-30 1250 Humboldt 3 miles S of Thorn3 miles S of Tom's Place Comment
  UC1198520  Navarretia pubescens Joseph P. Tracy 1914-5-14 4456 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC17146  Navarretia squarrosa S. V. Thompson 1967-7-24 22 Humboldt Near Boulder Creek Comment
  JEPS70471  Navarretia squarrosa Joseph P. Tracy 1921-7-23 5857 Humboldt Dows Prairie Northern Coast Ranges, Dows Prairie 60 Comment
  UCSB30610  Navarretia squarrosa Edwards, David 1974-7-13 Humboldt open field to SW. of intersection of Fickle Hill Rd. and Hill St; ca. 1/3 mi. E. of U.S. 101, Arcata 36 Comment
  UC169009  Nemophila heterophylla Mrs. M. H. Manning Mar. 1902 Humboldt Hupa Comment
  UC582718  Nemophila heterophylla Joseph P. Tracy 1937-5-17 15292 Humboldt Willow Creek , at Willow Creek (Trinity River Valley) 152 Comment
  UC1245398  Nemophila heterophylla Joseph T. Gregory 1937-5-17 1213 Humboldt e side Trinity River , Willow Creek, Graham Ranch (Graham Ranch, Willow Creek) 152 Comment
  HSC13589  Nemophila menziesii D. E. Anderson 1965-4-24 3532 Humboldt Along Titlow Hill Rd. Comment
  UC1239736  Nemophila menziesii Joseph P. Tracy 1935-5-26 13910 Humboldt Lone Star Creek , Lone Star Creek (Iaqua Region) 609 Comment
  UC1239748  Nemophila parviflora Joseph P. Tracy 1914-6-14 4510 Humboldt near Hydesville; Northern Coast Region, near Hydesville 60 Comment
  HSC79523  Nemophila parviflora Kenneth Clark 1980-3-23 533 Humboldt Along S Fork of Dead Man's Gulch 61 Comment
  UC562594  Nemophila pedunculata Joseph P. Tracy 1927-4-2 7873 Humboldt facing South Fork Eel River (Phillipsville); Northern Coast Ranges, , South Fork Eel River 121 Comment
  HSC41451  Nuphar polysepala Charles Eugene 1975-11-23 751123 .1 Humboldt Sweasey Lake, 11 mi. NW of Mt. Lassic (Signal Peak) 884 Comment
  HSC20657  Nuttallanthus texanus R. J. Vernimen 1963-4-27 36 Humboldt 0.5 mi. off Samoa Rd., behind the Georgia-Pacific dump, 7.5 mi. SW of Arcata. Comment
  UC902240  Nuttallanthus texanus Joseph P. Tracy 1948-5-15 17977 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UCD127734  Oenanthe pimpinelloides Joseph P. Tracy 1950-6-23 18874 Humboldt Larrabee Creek, 3 miles north of Blocksburg. 457 Comment
  UC1123090  Oenanthe sarmentosa H. L. Person 1932-8-22 Humboldt Eureka Quad., Arcata, Redwood Auto Camp. Comment
  UCD81683  Oenanthe sarmentosa Chuck Hughes 2009-6-18 102 Humboldt Near Arcata. NE corner of intersection of Old Samoa Road and Pacheco Road. 1 Comment
  POM224765  Oenothera glazioviana P. A. Munz 1936-8-13 14384 Humboldt 7 miles east of Arcata. Comment
  CAS-BOT-BC171605  Oenothera wolfii L. R. Abrams 1918-6-16 7168 Humboldt Willow Creek Comment
  RSA21623  Oenothera wolfii Carl B. Wolf 1937-9-9 9307 Humboldt 2 miles S of Cape Mendocino. 6 Comment
  UCR122379  Oenothera wolfii George K. Helmkamp, E. A. Helmkamp 2001-7-8 7005 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC86996  Olsynium douglasii var. douglasii Brent Helm, Curtis Miller, Mark Steiger 1988-3-30 55 Humboldt 8 mi. S on Titlow Hill Rd. 1159 Comment
  SEINET186016  Orobanche californica subsp. californica Joseph P. Tracy, H. E. Parks 1924-8-3 6761 Humboldt Big Lagoon 6 Comment
  JEPS10821  Orobanche fasciculata Lincoln Constance 1934-5-29 741 Humboldt Bull Creek Region. South Fork Eel River. Upper Look Prairie, just above Lookout Point. Comment
  UC1197442  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1941-4-26 16865 Humboldt Kneeland Prairie. Comment
  RSA0083228  Orthilia secunda C. B. Wolf 1937-8-13 9264 Humboldt North Coast Range, 12 mi. E. of Hoopa Valley on New Road toward Trinity Summit. 1677 Comment
  HSC100675  Orthocarpus erianthus Carl C. Marshall Jun 1887 468 Humboldt Vicinity of Garberville. Comment
  RSA407950  Orthocarpus purpurascens J. P. Smith, Thomas W. Nelson 1977-6-30 9210 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UC642259  Osmorhiza occidentalis Joseph P. Tracy 1935-7-24 14189 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC48765  Osmorhiza occidentalis Brad Klipfel 1973-6-16 101 Humboldt Along ridge trail SE of N Trinity Mountain 1829 Comment
  HSC21587  Osmorhiza purpurea R. D. Zortman 1963-5-12 39 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  JEPS43158  Oxalis corniculata Lincoln Constance 1934-5-29 719 Humboldt upper Look Prairie; South Fork of Eel River, Bull Creek Region 365 Comment
  SBBG67545  Oxalis oregana L. Rowntree 1931-7-24 Humboldt Carlotta Comment
  UC726372  Oxalis oregana A. A. Heller 1923-7-8 13770 Humboldt near Pepperwood Comment
  UCR275105  Oxalis oregana Charity A. Hartshorn 2016-5-14 37 Humboldt Arcata Community Forest 244 Comment
  HSC22494  Oxalis oregana G. M. Nordstrom 1966-4-16 1 Humboldt On Kneeland-Maple Creek Rd., 1/8 mi. W of Fickle Hill Rd. Jct. Comment
  UC1103421  Oxalis oregana Joseph P. Tracy 1926-7-5 7721 Humboldt near Redwood House (head of Grizzle Creek, towards South Yager); Northern Coast Ranges 609 Comment
  UC170010  Oxalis oregana Harley P. Chandler 1901-6-30 1188 Humboldt Eureka North Coast Ranges, Humboldt Bay 30 Comment
  HSC95581  Oxalis pes-caprae Andrea Pickart 2002-3-14 1 Humboldt Samoa Dunes, BLM Recreation Area 15 Comment
  UC1103781  Panicum acuminatum var. acuminatum Joseph P. Tracy 1927-5-14 8003 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley nr South Fork 182 Comment
  UC184379  Panicum capillare Joseph P. Tracy 1912-10-20 4009 Humboldt Alton Northern Coast Region, Alton 30 Comment
  RSA44527  Panicum oligosanthes var. scribnerianum Henry M. Pollard 1947-8-30 s.n. Humboldt Near Wilson Creek, on Klamath River, (near Orleans) Comment
  JEPS94285  Parentucellia viscosa Vernon Oswald and Lowell Ahart 1997-9-4 8855 Humboldt Samoa Dunes Recreation Area at the s end of the North Spit separating Humboldt Bay from the ocean North Spit; Samoa Dunes Recreation Area Comment
  CDA6387  Parentucellia viscosa T. C. Fuller 1961-9-28 7060 Humboldt 1.5 miles south of Samoa. 0 Comment
  HSC20910  Parentucellia viscosa R. Spellenberg 1964-6-15 408 Humboldt 0.5 mi. S of Humboldt Hill exit, 5 mi. S of Eureka Comment
  UCD88947  Paspalum distichum Joseph P. Tracy 1939-10-6 16505 Humboldt Eureka. West of Sunset Cemetary. Comment
  JEPS60059  Pellaea andromedifolia Willis G. Corbitt 1933-4-9 Humboldt Scotia Bluffs Comment
  HSC100393  Pellaea ornithopus Carl C. Marshall Apr 1887 361 Humboldt Supply Creek, a mile or two from Hoopa. Comment
  HSC44531  Penstemon anguineus Brad Klipfel 1973-7-1 139 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS7213  Penstemon anguineus Lincoln Constance 1934-6-19 905 Humboldt Grasshopper Pk near summit South Fork Eel River, Bull Creek Region 914 Comment
  HSC73629  Penstemon azureus M. A. Baker 1980-7-23 3146 Humboldt Near Orleans Mtn. 1859 Comment
  UC168978  Penstemon newberryi var. berryi Joseph Burtt Davy and Walter C. Blasdale Jun 21-23 1899 5860 Humboldt Trinity Summit North Coast Ranges Comment
  HSC59451  Penstemon newberryi var. berryi Richard Runyon 1979-6-27 40 Humboldt NW of Trinity Summit Station, W of ridge trail 1829 Comment
  JEPS11498  Penstemon procerus var. brachyanthus Joseph P. Tracy 1932-7-12 10480 Humboldt head of Brett Hole Trinity Summit, head of Brett Hole 1828 Comment
  UC3355579  Penstemon rattanii J. G. Lemmon June 1882 Humboldt near Kneeland Prairie; near Kneeland Prairie Comment
  UC169849  Penstemon rattanii var. kleei V. Rattan 1870-1 Humboldt Comment
Read comments
Sep 7 2007
  UC180225  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1914-10-11 4637 Humboldt Stephen Hill place Northern Coast Region, Eureka 0 Comment
  HSC56264  Perideridia gairdneri subsp. gairdneri G. L. Clifton, Terry Griswold 1979-8-2 12421 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC56312  Perideridia kelloggii Overton, Butler 1979-8-2 12645 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC56122  Perideridia parishii subsp. latifolia G. L. Clifton, Terry Griswold 1979-8-1 11909 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UCD134922  Petasites frigidus var. palmatus K. Esau 1934-4-1 s.n. Humboldt Above Fort Seward. Comment
  SEINET11809913  Petasites palmatus Unknown 1937-1 13350 Humboldt near Trinidad Comment
  HSC100689  Peucedanum Carl C. Marshall Apr 1887 359 Humboldt Hoopa trail on Supply Creek 610 Comment
  POM287461  Phacelia bolanderi Lyman Benson 1928-7-12 484 Humboldt Woods across South Fork Eel River from Weott Ranger Station; seaward north coast mt. range. 61 Comment
  HSC100499  Phacelia circinata Carl C. Marshall Jun 1886 288 Humboldt Coyote Camp. Comment
  CDA40414  Phacelia heterophylla subsp. virgata T. C. Fuller 1958-6-17 s.n. Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  UC660089  Phacelia heterophylla subsp. virgata G. L. Stebbins Jr. 1941-5-27 3111 Humboldt 1/4 mi w Bridgerville (on hwy to Eureka) Comment
  HSC56933  Phacelia mutabilis G. L. Clifton, Butler 1979-7-26 9369 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC57205  Phacelia mutabilis Griswold, Butler 1979-7-12 7160 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC562568  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1935-5-25 13829 Humboldt Blocksburg 518 Comment
  UC604639  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1938-9-4 16143 Humboldt mouth Hors-Linto Creek 243 Comment
  HSC58070  Phacelia procera G. L. Clifton, Griswold 1979-8-1 11955 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  UC562576  Phacelia procera Joseph P. Tracy 1932-7-12 10431 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC552717  Phalaris angusta Joseph P. Tracy 1935-5-25 13856 Humboldt Fort Seward 106 Comment
  CAS-BOT-BC258864  Phalaris aquatica Henry M. Pollard 1947-9-1 s.n. Humboldt Field near Perch Creek, Orleans region Comment
  CAS-BOT-BC76556  Philadelphus lewisii W. R. Dudley 1899-6-21 s.n. Humboldt Near Eel River below Dyerville Comment
  CAS-BOT-BC76565  Philadelphus lewisii Doris K. Kildale 1927-7-3 3634 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC76570  Philadelphus lewisii Doris K. Kildale 1927-8-7 3864 Humboldt Kneeland Prairie 762 Comment
  JEPS43497  Philadelphus lewisii Lincoln Constance 1934-5-26 655 Humboldt near Founder's Tree; South Fork Eel River, Bull Creek Region, North Dyerville Fla 48 Comment
  JEPS49602  Philadelphus lewisii Harley P. Chandler June, 1901 1523 Humboldt Sommes Bar North Coast Ranges, Klamath River 426 Comment
  UC666825  Philadelphus lewisii Joseph P. Tracy 1937-6-20 15355 Humboldt ten mi up stream from mouth; Bear River 152 Comment
  CAS-BOT-BC250884  Phleum pratense Henry M. Pollard 1948-7-17 s.n. Humboldt Orleans Comment
  UC52675  Phlox adsurgens Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  SEINET12279173  Phlox adsurgens H. P. Chandler 1901-1 1534 Humboldt Klamath River 427 Comment
  UC1541555  Phlox adsurgens W. K. Parks Jul 1933 Humboldt South Fork Comment
  UC1198562  Phlox gracilis Joseph P. Tracy 1906-5-6 2447 Humboldt near Hydesville (hillside of Wolverton Gulch); Northern Coast Region, Wolverton Gulch 60 Comment
  HSC60287  Phoradendron serotinum subsp. tomentosum Phyllis Krieg 1979-5-14 Humboldt Korbel Post Office 30 Comment
  UC249705  Phoradendron villosum Joseph P. Tracy 1921-12-4 5980 Humboldt Bald Mt. Northern Coast Ranges, Bald Mt. 762 Comment
  SEINET11763301  Phyllospadix torreyi H. E. Parks 1933-1 s.n. Humboldt Spruce Cove, Trinidad Comment
  CAS-BOT-BC140580  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
  JEPS108629  Physocarpus capitatus W. Roderick Humboldt 1.3 mi S of Indianola Comment
  CAS-BOT-BC73441  Picea sitchensis William R. Dudley 1899-6-28 s.n. Humboldt Humboldt Bay peninsula opposite Eureka. Comment
  CAS-BOT-BC73446  Picea sitchensis Carl B. Wolf 1930-10-28 1037 Humboldt 5 miles south of Ferndale on road to Petrolia. 152 Comment
  UC55646  Picea sitchensis J. Burtt Davy 1899-7-30 6186 Humboldt in gulches in back Ferndale; North Coast Ranges Comment
  SEINET5334460  Picea sitchensis W. D. Billings 1940-6-28 1355 Humboldt 1/4 mile north of Trinidad Head Comment
  CAS-BOT-BC78380  Pinus contorta W. R. D. 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  HSC31517  Pinus contorta Steve Selva, Roger Jensen 1974-8-28 92 Humboldt Approx. 5 mi. S of Arcata on the Samoa Peninsula Comment
  SD41323  Pinus contorta Edith A. Purer 1932-7-27 4132 Humboldt Samoa, near Arcata Comment
  UC400254  Pinus contorta subsp. contorta J. P. Tracy 1901-2-1 Humboldt opp. Eureka (sand hills of Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  HSC26813  Pinus jeffreyi J. O. Sawyer 1973-3-12 2477 Humboldt SE of Kerr Peak on Manhart Ranch, Bulk Collection # 44 457 Comment
  CAS-BOT-BC78978  Pinus muricata William R. Dudley 1899-6-28 s.n. Humboldt the Humboldt Bay [peninsula] Peninsula opposite Eureka (near sea-level) Comment
  RSA273348  Piperia transversa J. D. Ackerman 1974-8-13 404 Humboldt Ca. 2 miles north of Manila, between sand dunes and Mad River Slough Comment
  HSC34541  Pityopus californicus Rudolf W. Becking 1971-9-24 Humboldt HSC School Forest Freshwater. Bulk Collection 21 Comment
  UC526810  Plagiobothrys nothofulvus Joseph P. Tracy 1932-5-1 9861 Humboldt near Garberville; North Coast Ranges, Redway 182 Comment
  POM126241  Plagiobothrys reticulatus 1907-6-20 2568 Humboldt Eureka 0 Comment
  UC526820  Plagiobothrys reticulatus Joseph P. Tracy 1933-5-20 12244 Humboldt Mattole Valley near Petrolia; Northern Coast Ranges, Mattole Valley 30 Comment
  UC526825  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1932-6-26 10274 Humboldt Fort Baker Ranch North Coast Ranges, Fort Baker Ranch 762 Comment
  SEINET12275868  Plagiobothrys scouleri J. P. Tracy 1949-1 18322 Humboldt Cameron Hill on Kneeland Road Comment
  UC1222205  Plagiobothrys scouleri Joseph P. Tracy 1946-5-30 17549 Humboldt 5 mi e Carlotta (Riverside Park on Van Duzen River); Van Duzen River 30 Comment
  SEINET12275926  Plagiobothrys trachycarpus J. P. Tracy 1942-1 17355 Humboldt 1 mi NE of Garberville 305 Comment
  HSC37922  Plantago erecta Peter Sorenson 1976-6-14 Humboldt N Spit Comment
  SEINET12330007  Plantago hirtella var. galeottiana F. H. Utech 1986-1 86 -409 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  HSC89480  Plantago lanceolata P. A. Daly 1986-3-12 75 Humboldt Trinidad Head 61 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
  HSC89977  Plantago maritima Leonel Arguello 1989-7-14 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata. Comment
  HSC95094  Plantago maritima Andrea Pickart 2002-6-27 118 Humboldt Mad River Slough and Dunes, N of parking lot area at N end of access road. 0 Comment
  POM312378  Plantago subnuda Malcolm A. Nobs, S. Galen Smith 1949-8-3 1188 Humboldt Southern outskirts of Eureka Comment
  HSC53952  Platanthera dilatata Griswold, Butler 1979-7-11 7002 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC48688  Platanthera dilatata var. leucostachys Brad Klipfel 1973-7-31 255 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55192  Platanthera dilatata var. leucostachys G. L. Clifton, Griswold 1979-8-2 12266 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS51633  Platystemon californicus Joseph P. Tracy 1866-4-4 Humboldt Eureka Comment
  HSC16794  Platystemon californicus C. A. Bontrager 1966-4-24 46 Humboldt 1834 Allard Ave., Eureka Comment
  SEINET780341  Plectritis M. A. Baker 1980-3-7 1151 Humboldt confluence of Pine and Burndt Ranch Creeks Comment
  UC1239605  Plectritis congesta Joseph P. Tracy 1932-6-26 10255 1/2 Humboldt Valley of South Yager Creek 762 Comment
  HSC96284  Plectritis congesta subsp. congesta J. Breton, A. Livingston 2005-6-8 5 Humboldt 2.0 mi. S of Hwy. 299 on Titlow Rd. 1032 Comment
  HSC100117  Pleuricospora fimbriolata Rudolf W. Becking 1972-6-30 720608 Humboldt Fish Lake area, Orleans 762 Comment
  UC1197753  Pleuricospora fimbriolata Stuart K. Harris 1942-6-17 7035 Humboldt Chalk Mountain 762 Comment
  RSA10113  Poa Joseph P. Tracy 1930-7-19 9053 Humboldt South Fork Mountain; along summit near Blake lookout. 1738 Comment
  RSA10119  Poa Joseph P. Tracy 1933-7-26 12911 Humboldt Grouse Mountain; North Coast Ranges 1524 Comment
  HSC10624  Poa annua E. W. Styskel 1964-4-12 65 Humboldt Corner of Center St. and Hwy. 101 in Rio Dell. Comment
  SEINET255064 Image available Poa annua J. P. Tracy 1914-7-5 4548 Humboldt Bald Mtn between High Prairie and Snow Camp Comment
  BLMAR436  Poa confinis Jennifer Anthony-Wheeler 2008-6-18 436 Humboldt Samoa/Malel Dunes 9 Comment
  HSC10683  Poa confinis E. W. Styskel 1964-5-7 79 Humboldt 2 mi. S of Samoa near Samoa Rd., near beach. Comment
  HSC10689  Poa confinis L. H. Myers 1963-5-3 49 Humboldt Sand dunes W of Lanphere's Rd., Mad River Slough area. Comment
  HSC10706  Poa douglasii R. E. Hafenfeld 1965-5-9 59 Humboldt 1/2 mi. S Ossagon Creek, near Gold Bluff Beach Rd. Comment
  JEPS71272  Poa douglasii unknown 1925-8-2 119 Humboldt Samoa Comment
  UC34126  Poa howellii Joseph Burtt Davy Jun 8 1899-Jun 1 1901 5360 Humboldt Harris Comment
  UCD91557  Poa nemoralis A. E. Lyons 1926-6-1 s.n. Humboldt in city of Orick. Comment
  HSC10771  Poa pratensis R. V. Papike 1962-5-25 32 Humboldt Arcata. 91 Comment
  UCD91935  Poa pratensis A. H. Murphy 1951-4-19 11 Humboldt Tooby and Prior Ranch, 2 miles south of Blocksburg. Comment
  HSC73790  Poa secunda subsp. secunda Gail Newton 1980-6-28 709 Humboldt Near Mad River Butte. 1536 Comment
  HSC74129  Poa secunda subsp. secunda R. York 1980-5-23 618 Humboldt Near Buck Mtn. 1524 Comment
  HSC98797  Poa secunda subsp. secunda Cara Witte 2008-6-11 712 Humboldt National Forest Road 5N10. 2.5 miles south of intersection with Forest Service Road 5N41. 1303 Comment
  HSC98888  Poa secunda subsp. secunda Cara Witte 2007-6-5 208 Humboldt Along Forest Service Road 4N32. Near Grouse Mountain 1413 Comment
  UC525666  Poa secunda subsp. secunda Joseph P. Tracy 1933-6-13 12602 Humboldt near summit Hoopa Mt (on rd from Hoopa westward to Bair's) 914 Comment
  HSC26778  Poa trivialis Thomas W. Nelson 1971-5-31 462 Humboldt 915 Comment
  HSC31788  Poa trivialis Donald Spalinger 1974-4-20 20 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  UC525630  Poa trivialis Joseph P. Tracy 1926-6-12 7587 Humboldt near Orick (at Davison's Ranch); North Coast Ranges 60 Comment
  POM126102  Poa unilateralis Joseph P. Tracy 1910-4-24 3124 Humboldt Sand dunes of ocean beach at Humboldt Bay Comment
  CAS-BOT-BC244298  Podagrostis humilis Joseph P. Tracy 1930-7-16 8989 Humboldt South Fork Mountain, at McKay Camp 1676 Comment
  UC162581  Polemonium carneum Ethel Tracy 1911-6-18 Humboldt near Big Lagoon; Northern Coast Ranges, near Big Lagoon 30 Comment
  UC170193  Polygala californica Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  HSC67530  Polygala cornuta J. P. Smith, Steve Selva 1970-6-14 3841 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UC672945  Polygonum amphibium Joseph P. Tracy 1934-7-20 13468 Humboldt Big Lagoon 3 Comment
  HSC17474  Polygonum aviculare C. B. Wolf 1927-8-29 1208 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  HSC31424  Polygonum aviculare R. F. Thorne, P. Everett 1965-8-8 35244 Humboldt N edge of Eureka, E of Hwy 101 5 Comment
  HSC100601  Polygonum bistorta Carl C. Marshall Jun 1886 269 Humboldt Trinity Summit. Comment
  UC672971  Polygonum bistortoides Joseph P. Tracy 1932-7-10 10384 Humboldt Corral Prairie Trinity Summit 1584 Comment
  JEPS79955  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1940-8-25 16707 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA152547  Polygonum kelloggii Joseph P. Tracy 1932-7-10 10379 Humboldt Trinity Summit Corral Prairie, in wet meadow Comment
  HSC75441  Polygonum minimum J. O. Sawyer 1980-7-18 3608 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC109177  Polygonum paronychia Doris K. Kildale 1927-5-15 3165 Humboldt Beach at Cape Mendocino. Comment
  UC162327  Polygonum paronychia Joseph P. Tracy 1911-5-30 3200 Humboldt Bucksport Northern Coast Region, Region about Humboldt Bay 0 Comment
  UC72026  Polygonum persicaria Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC205474  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1919-9-22 5269 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC99101  Polygonum polystachyum Cara Witte 2007-6-12 244 Humboldt Intersection of 4N70 and 4N32. Intersection to Grouse Mountain Lookout. 1628 Comment
  UC672940  Polygonum sachalinense W. E. Peacock 1939-8-18 Humboldt near Fields Landing; Buhne Flat 9 Comment
Read comments
Jul 14 2016
  CDA2916  Polygonum sachalinense T. C. Fuller 1968-7-3 17443 Humboldt West side of the south-bound lanes of Highway 101 freeway, just north of the South Bay Depot Road, Fields Landing. 0 Comment
  RSA139174  Polygonum sachalinense T. C. Fuller 1960-8-25 4973 Humboldt W Hwy 101 0.25 mile N of Humboldt Hill Road, Eureka Comment
  UC249779  Polypodium Joseph P. Tracy 1924-3-9 6608 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  CAS-BOT-BC72040  Polypodium calirhiza Alice Eastwood 1907-4-21 5 Humboldt Trinidad Comment
  HSC95875  Polypodium calirhiza Will Ferrand 2002-5-7 46 Humboldt 200 ft. N of the intersection of Lanphere Rd. and the entrance to Lanphere Dunes Preserve 9 Comment
  UCD136880  Polypodium glycyrrhiza Linda M. Barker 1976-2-22 1313 Humboldt 3 miles west of Arcata. Comment
  CAS-BOT-BC76845  Polypodium glycyrrhiza Doris K. Kildale 1926-12-19 2876 Humboldt Briceland Bridge 1/2 mi. west of Garberville. Comment
  HSC98745  Polypodium glycyrrhiza Cara Witte 2008-6-11 713 Humboldt National Forest Road 5N10. 3.5 miles south of intersection with Forest Service Road 5N41. 1265 Comment
  SEINET3873640  Polypodium glycyrrhiza P. F. Yull 1966-3-24 111 Humboldt South of Manila School. 140 yards from ocean.; 0 Comment
  UC62442  Polypodium scouleri W. C. Blasdale 1896-6-2 Humboldt w Eureka Eureka Comment
  UC1541571  Polypogon interruptus Harold E. Parks August 1924 Humboldt Eureka Comment
  UC184147  Polypogon interruptus Joseph P. Tracy 1912-6-27 3709 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  SEINET200579 Image available Polypogon maritimus J. P. Tracy 1930-10-19 9236 Humboldt Eel River on gravel bars Alton to Fortuna 0 Comment
  CAS-BOT-BC232592  Polypogon monspeliensis Doris K. Kildale 1928-7-29 5923 Humboldt Bear River at Capetown Comment
  CAS-BOT-BC232595  Polypogon monspeliensis Henry M. Pollard 1948-7-21 s.n. Humboldt Bank of Klamath River near Orleans Comment
  SEINET200577 Image available Polypogon monspeliensis Joseph P. Tracy 1916-5-31 4692 Humboldt Holmes Flat along Eel River from South Fork to Scotia. 61 Comment
  RSA152378  Polypogon viridis Joseph P. Tracy 1943-8-29 17445 Humboldt [Unspecified] Comment
  UC1440057  Polystichum californicum Danin & H. G. Baker 1960-8-13 598 Humboldt ca. 2 mi n Dyerville (High Rock on w side of Eel River, along Ave. of the Giants) Comment
  SEINET11723017  Polystichum dudleyi E. A. York 1990-1-10 2670 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC40256  Polystichum munitum Linda M. Barker 1976-4-30 1414 Humboldt 3 mi. W of Arcata Comment
  UC1440064  Polystichum munitum Danin & H. G. Baker 1960-9-2 658 c Humboldt ca. 2 mi n of Dyerville (High Rock (on W side of Eel River), along Ave. of the Giants) 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
  UC249539  Populus trichocarpa Joseph P. Tracy 1922-10-8 6125 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  SBBG88770  Potamogeton natans A. Keedy 1988-9-20 12 Humboldt off Alder Grove Rd, N of Arcata, near Hwy 299, Arcata Salt Marsh Project Comment
  HSC62826  Potamogeton nodosus J. M. DiTomaso 1979-4-22 907 Humboldt Crannell Rd. exit between Westhaven and McKinleyville Comment
  CAS-BOT-BC143075  Potentilla anserina subsp. pacifica Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC38918  Potentilla anserina subsp. pacifica Linda M. Barker 1976-6-1 1556 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  UCD113696  Potentilla anserina subsp. pacifica Gordon Leppig 1998-6-25 855 Humboldt McKinleyville, Mad River Estuary at end of Murray Rd. 0 Comment
  CAS-BOT-BC143072  Potentilla anserina subsp. pacifica Kenneth Clark 1980-5-10 652 Humboldt Western beach of Point Delgada 3 Comment
  RSA232639  Potentilla anserina var. grandis Larry E. DeBuhr, Gary D. Wallace 1972-5-22 609 Humboldt On the beach at Prairie Creek. Redwoods Sate Park Comment
  HSC58120  Potentilla drummondii G. L. Clifton, Griswold 1979-8-1 12089 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC48814  Potentilla gracilis var. fastigiata Brad Klipfel 1973-7-31 228 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC75470  Potentilla gracilis var. fastigiata J. O. Sawyer 1980-7-18 3617 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC15459  Prosartes hookeri D. E. Anderson 1965-4-28 3554 Humboldt Rd. leading S on E side of creek, Freshwater County Park Comment
  CAS-BOT-BC517514  Prosartes smithii Kenneth Clark 1980-3-24 539 Humboldt Upper terrace of Dead Man's Gulch; Shelter Cove 76 Comment
  HSC76520  Prunella vulgaris John Demarinis 1981-7-21 878 Humboldt Near Table Bluff 38 Comment
  HSC22507  Prunella vulgaris subsp. lanceolata J. R. Lippincott 1967-7-16 5 Humboldt Near N Fork Mad River bridge 152 Comment
  RSA424589A  Prunella vulgaris var. lanceolata Bonnie C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  UC577359  Prunella vulgaris var. lanceolata Joseph P. Tracy 1935-5-25 13868 Humboldt Fort Seward 106 Comment
  SD93020  Prunella vulgaris var. lanceolata W. Bertsch 1953-7-30 220 Humboldt Highway 101 near Dyerville. 60 Comment
  UC1321003  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-21 636 Humboldt s Weott (Burlington Residence Area and Campground, Humboldt Redwoods State Park); Humboldt Redwoods State Park Comment
  BLMAR465  Prunus emarginata Jennifer Anthony-Wheeler 2004-11-8 465 Humboldt Titlow Hill, growing along Titlow Hill road off Hwy 299 914 Comment
  CAS-BOT-BC159987  Prunus emarginata Doris K. Kildale 1927-7-22 3813 Humboldt Lassecks Peaks 1661 Comment
  JEPS44944  Prunus emarginata Joseph P. Tracy 1917-5-6 4780 Humboldt at Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC12753  Prunus emarginata Harley P. Chandler June, 1901 1273 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 1066 Comment
  HSC99391  Prunus emarginata var. emarginata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 40 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC5685  Pseudognaphalium californicum J. P. Tracy 1937-7-11 15415 Humboldt Vicinity of Garberville 122 Comment
  UCSB30606  Pseudognaphalium californicum Edwards, David 1974-8-14 Humboldt S. side of dirt Rd., ca. 1/2-1/3 mi. in on dirt road from jct. with Fickle Hill Rd., ca. 1/4 mi. from jct. of Fickle Hill Rd. and Park Ave. Comment
  UC582515  Pseudognaphalium ramosissimum Joseph P. Tracy 1936-8-24 15169 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  JEPS24541  Pseudognaphalium ramosissimum Dick Waring 1960-8-1 Humboldt in disturbed area about 2 mi n Weott; Avenue of the Giants Comment
  SD148240  Pseudognaphalium stramineum G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7013 Humboldt Samoa Peninsula, 2.6 miles south of California Highway 255, bridge across Humboldt Bay. 14 Comment
  UC582510  Pseudognaphalium stramineum Joseph P. Tracy 1937-8-3 15614 Humboldt near Blue Lake; Mad River 15 Comment
  HSC89524  Pseudognaphalium stramineum M. Roantree 1985-6-11 90 Humboldt SW side of Trinidad Head Comment
  HSC30338  Pseudotsuga menziesii var. menziesii Dale R. Gradek 1974-5-2 34 Humboldt 0.25 mi N of intersection of Dows Prairie Rd. and Grange Rd. Comment
  HSC76290  Pseudotsuga menziesii var. menziesii Teresa Prendusi 1981-7-23 358 Humboldt Near Black Mountain. 890 Comment
  HSC1162  Pteridium aquilinum var. pubescens R. F. Good 1962-5-23 21 Humboldt Surrounding Arcata 60 Comment
  UC577353  Pycnanthemum californicum Joseph P. Tracy 1926-10-7 7809 Humboldt w side South Fork of Trinity River opposite Limestairs; South Fork of Trinity River Comment
  CAS-BOT-BC460595  Pyrola aphylla Henry M. Pollard 1948-7-23 s.n. Humboldt Perch Creek canyon near Orleans Comment
  RSA0080628  Pyrola dentata C. B. Wolf 1937-8-13 9242 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  CAS-BOT-BC466041  Pyrola picta Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC60101  Quercus chrysolepis M. A. Baker 1977-5-8 270 Humboldt Gray's Falls Comment
  OBI36120  Quercus chrysolepis David J. Keil 1983-7-1 17275 Humboldt 2.5 mi NE of Honeydew along Bull Creek Flats rd Comment
  UC1222292  Quercus chrysolepis Joseph P. Tracy 1950-8-4 19256 Humboldt at head of Canoe Creek, summit of ridge ne of the lookout station, Grasshopper Peak, in Bull Creek State Park Bull Creek State Park, Grasshopper Peak, Canoe Creek Comment
  UC54678  Quercus chrysolepis Harley P. Chandler Jun 1901 1435 Humboldt Klamath River North Coast Ranges 304 Comment
  HSC48346  Quercus garryana Maralyn O'Meara 1974-7-11 527 Humboldt Kneeland, Barry Ridge Comment
  UC1175127  Quercus garryana P. C. Everett and E. K. Balls 1959-10-24 23955 Humboldt 4.7 mi s from Bluff Creek (Hwy 96, from Orleans to Weitchpec) 121 Comment
  UC1196523  Quercus garryana Joseph P. Tracy 1920-10-9 5402 Humboldt Bald Mountain, at Hungry Hill Northern Coast Ranges 762 Comment
  UC1135607  Quercus garryana R. Stahelin 1933-8-20 Humboldt Liscomb Hill Eureka Quad. Comment
  OBI36669  Quercus garryana var. garryana David J. Keil 1983-7-2 17343 Humboldt 21 mi S of SR 299 along Titlow HIll rd, SW of Willow Crk Comment
  RSA46718  Quercus garryana var. garryana Doris K. Kildale 1937-8-29 15352 Humboldt Dinsmore's. Comment
  JEPS37758  Quercus kelloggii W. L. Jepson 1903-6 2203 Humboldt Harris Ridge 1127 Comment
  CAS-BOT-BC104335  Quercus sadleriana Milo S. Baker 1947-8-10 11896 Humboldt 16 mi NE of Hoopa along trail to Trinity Summit from end of forest road 1463 Comment
  CAS-BOT-BC104540  Quercus vacciniifolia Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC102068  Quercus vacciniifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 970 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC72804  Quercus vacciniifolia M. A. Baker 1980-6-16 1939 Humboldt Near Monks Camp. 1097 Comment
  POM118706  Ranunculus californicus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC162875  Ranunculus californicus Joseph P. Tracy 1901-4-26 1044 Humboldt e Fields Landing; Northern Coast Region, Region about Humboldt Bay, Humboldt H 0 Comment
  CAS-BOT-BC378851  Ranunculus californicus var. californicus Kenneth Clark 1980-3-22 521 Humboldt on ridge of disturbed hillside above Dead Man's Gulch Comment
  HSC18143  Ranunculus californicus var. cuneatus W. A. Heaton 1965-4-10 26 Humboldt 0.5 mi. N of Trinidad State Park Comment
  UC9434  Ranunculus flammula Harley P. Chandler May, 1901 1130 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC1103010  Ranunculus flammula Joseph P. Tracy 1930-8-3 9149 Humboldt pond near Little Van Duzen River; Northern Coast Ranges, Buck Mountain 762 Comment
  UC162870  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1908-6-7 2614 Humboldt Butler Valley Northern Coast Ranges, Mad River 152 Comment
  HSC18220  Ranunculus orthorhynchus var. platyphyllus Jack Rockwell 1962-5-4 53 Humboldt Along Ellison Creek near rd. 457 Comment
  HSC90682  Ranunculus repens Gail Newton 1982-5-31 3564 Humboldt Elk River Wildlife Area, Eureka Comment
  CHSC1495  Ranunculus repens var. repens M. Underhill 1952-7-13 Humboldt 1 Comment
  HSC18176  Ranunculus repens var. repens Francis Winter 1960-4-19 Humboldt Samoa Peninsula, 4.5 mi. W of Arcata Comment
  HSC36258  Ranunculus repens var. repens John Rehling 1974-8-19 18 Humboldt Comment
  HSC71213  Ranunculus sardous Thomas W. Nelson, Doris K. Niles 1979-5-19 4696 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  JEPS55000  Ranunculus uncinatus Joseph P. Tracy 1916-5-7 4687 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC18194  Ranunculus uncinatus var. parviflorus W. F. Nickel 1965-5-15 Humboldt 0.5 mi. E of Arcata on rd. to Arcata Reservoir Comment
  HSC12337  Raphanus sativus Steve Dorei 1970-10-26 115 Humboldt Arcata, South G st. Comment
  UC1197992  Rhamnus californica Joseph P. Tracy 1934-8-4 13556 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS42009  Rhamnus californica subsp. californica W. L. Jepson 1903-6-19 2206 Humboldt Briceland, s Humboldt County Briceland Comment
  UC165816  Rhamnus californica subsp. californica Joseph P. Tracy 1909-7-31 3037 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  RSA1465  Rhamnus purshiana E. R. Johnson 1929-08 1410 Humboldt Arcata Redwood Park. 76 Comment
  UC726369  Rhamnus purshiana A. A. Heller 1923-7-9 13775 Humboldt 5 mi from Arcata (near Blue Lake) Comment
  CDA38849  Rhododendron macrophyllum A. T. Leiser 1980-7-9 s.n. Humboldt North of Orick, Hwy 101 reroute, May Creek Watershed. Comment
  UC1543140  Rhododendron occidentale Frank Gould, Kay Beach 1940-5-5 1041 Humboldt along coast near Trinidad Comment
  UC1733675  Rhododendron occidentale Frank Gould, Kay H. Beach 1940-5-5 1041 Humboldt along north coast, north of Eureka. Comment
  UCSB18968  Rhododendron occidentale Jensen, Karen 1965-4-14 Humboldt Along U.S. Highway 101, 1 km. S of Trinidad 45 Comment
  CAS-BOT-BC200382  Rhododendron occidentale var. paludosum Doris K. Kildale 1926-8-22 2579 Humboldt French Camp on Orick-Martin's [Martins] Ferry road 731 Comment
  CAS-BOT-BC200385  Rhododendron occidentale var. paludosum Doris K. Kildale 1928-7-1 5305 Humboldt French Camp - Orick-Martin's [Martins] Ferry road Comment
  CDA21469  Rhododendron occidentale var. paludosum G. F. Hrusa, T. D. Wilfred 1992-5-5 9374 Humboldt North Coast Ranges; Mckinleyville Azalea Reserve. 30 Comment
  RSA171949  Rhododendron occidentale var. paludosum R. F. Thorne 1957-9-3 19025 Humboldt Patrick's Point State Park. Comment
  HSC56034  Ribes binominatum G. L. Clifton, Griswold 1979-7-31 11591 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  HSC96229  Ribes binominatum M. Lindquist, C. Riley 2005-6-15 10 Humboldt 1490 Comment
  CAS-BOT-BC92881  Ribes bracteosum M. Louise Hutchinson 1913-5-1 s.n. Humboldt Eureka. Comment
  HSC19378  Ribes lobbii J. O. Sawyer 1968-9-27 728 Humboldt Near Waterdog Lakes and N Trinity Mtn. 1768 Comment
  HSC69887  Ribes lobbii Thomas W. Nelson, Jane P. Nelson 1977-7-30 3665 Humboldt Beside State Rte. 36, 1 mi. E of Dinsmore. 732 Comment
  HSC102025  Ribes marshallii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 926 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC103200  Ribes marshallii Jade Paget-Seekins 2010-7-5 34 Humboldt On the trail to Mill Creek Lake, up Big Hill Road, outside of Hoopa. 1655 Comment
  CAS-BOT-BC206042  Ribes menziesii A. A. Heller 1924-7-24 s.n. Humboldt Near Humboldt County camp on the redwood highway 7 miles south of Trinidad Comment
  CAS-BOT-BC206045  Ribes menziesii L. R. Abrams 1916-7-11 6033 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  HSC20376  Ribes menziesii Greg Bos 1965-5-2 243 Humboldt 7 mi. E of Korbel on Bald Mtn. Rd. 793 Comment
  UC534986  Ribes menziesii Harold E. Parks April 1933 4402 Humboldt vicinity Trinidad (type locality); McNeils Creek Comment
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Jun 26 2012
  UC552231  Ribes menziesii Joseph P. Tracy 1933-5-20 12268 Humboldt near Petrolia; North Coast Ranges, Mattole Valley 15 Comment
  RSA0021780  Ribes menziesii Elmer I. Applegate 1931-3-28 6625 Humboldt Trinidad. [label says Mendocino but should be Humboldt Co.] Comment
  UCD102480  Ribes roezlii P. Zinke 1950-8-4 153 Humboldt 2 miles west of Harris Post Office. 853 Comment
  BLMAR142  Ribes roezlii var. amictum Donald Hazlett 1994-6-7 142 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC20349  Ribes roezlii var. cruentum Eugene Andreuccetti 1964-5-2 39 Humboldt 5 mi. from Willow Creek on Hwy. 299 Comment
  HSC20343  Ribes sanguineum D. E. Anderson 1962-2-10 1913 Humboldt 1.0 mi. S of Big Lagoon school along abandoned stretch of Hwy. 101 Comment
  HSC70756  Ribes sanguineum R. York 1980-5-17 527 Humboldt Near Le Perron Peak 1066 Comment
  UC667053  Ribes sanguineum Joseph P. Tracy 1935-7-25 14246 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  CAS-BOT-BC144690  Ribes sanguineum var. glutinosum Doris K. Kildale 1928-2-19 4271 Humboldt Patrick's Point Comment
  HSC93267  Ribes sanguineum var. glutinosum Gordon Leppig 1998-3-25 723 Humboldt McKinleyville, Central Ave. 43 Comment
  UC902090  Ribes sanguineum var. glutinosum Joseph P. Tracy 1948-2-22 17951 Humboldt Table Bluff 91 Comment
  UCD102493  Ribes sanguineum var. glutinosum Linda M. Barker 1976-3-11 1323 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  HSC103185  Ribes viscosissimum Jade Paget-Seekins 2010-6-23 25 Humboldt Horse Mountain. Slightly less than 10 miles up Titlow Hill Road, on Forest Route 1. Near 'Road Narrows' sign. 1558 Comment
  HSC74206  Ribes viscosissimum M. A. Baker 1980-7-22 3075 Humboldt Near Salmon Mtn. 1820 Comment
  HSC96223  Ribes viscosissimum Eric Schori, Kazuyuki Ishimaru 2005-6-15 10 Humboldt 17 mi. S of Hwy. 299, S bank of roadside 1575 Comment
  HSC99027  Ribes viscosissimum Cara Witte 2008-7-1 783 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1462 Comment
  HSC57635  Romanzoffia sitchensis G. L. Clifton, Griswold 1979-7-25 10793 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC35152  Romanzoffia tracyi Gary S. Lester 1975-4-4 605 Humboldt About 1 mi. N of Elk Head near Trinindad 15 Comment
  UC1103817  Romanzoffia tracyi Joseph P. Tracy 1940-5-18 16563 Humboldt 2 mi. n. Trinidad (coast bluff opposite Park's place) 3 Comment
  UCD115287  Rorippa curvisiliqua Malcolm A. Nobs; S. Galen Smith 1949-8-9 1238 Humboldt on southern side of the town of Blue Lake. Comment
  CHSC19514  Rorippa nasturtium-aquaticum J. F. Knezevich 1968-5-14 433 Humboldt Collected 13 miles south of Ferndale at Cape Mendocino. -15 Comment
  JEPS47243  Rosa Lincoln Constance 1934-5-26 654 Humboldt S. end of Dyerville Bridge South Fork Eel River, Bull Creek Region (s bank of river) Comment
  CAS-BOT-BC146476  Rosa gymnocarpa Alice Eastwood; John Thomas Howell 1937-6-23 4798 Humboldt Near Dinsmores Comment
  HSC19624  Rosa gymnocarpa Lincoln Constance 1934-6-2 791 Humboldt Bull Creek Rd. to mouth of Bull Creek, top Bull Creek Comment
  HSC47952  Rosa gymnocarpa Brad Klipfel 1974-7-27 493 Humboldt Horse Mtn. Comment
  HSC58243  Rosa gymnocarpa G. L. Clifton, Griswold 1979-8-2 12413 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS47242  Rosa gymnocarpa Lincoln Constance 1934-6-2 791 Humboldt Bull Cr. road to mouth of Bull Cr. (and up creek); South Fork Eel River, Bull Creek region Comment
  UC1927277  Rosa luciae Barbara Ertter with Tom Nelson and Dick Brummitt 2004-7-2 18404 Humboldt Eureka, at edge of 14th Street where road crosses large drainage (opposite 1404 14th St.) Comment
  CAS-BOT-BC146825  Rosa nutkana Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC146837  Rosa nutkana Doris K. Kildale 1927-5-14 3202 Humboldt Big Lagoon Comment
  HSC19614  Rosa nutkana D. J. Jager 1965-5-12 69 Humboldt 0.5 mi. N of Trinidad on bluff above College Cove 46 Comment
  CAS-BOT-BC146884  Rosa rubiginosa Doris K. Kildale 1927-7-1 3616 Humboldt Alton Hill 30 Comment
  HSC100908  Rosa spithamea Carl C. Marshall Jun 1886 306 Humboldt Trail E of Hoopa. Comment
  JEPS47289  Rubus discolor W. L. Jepson 1934-5-7 16715 Humboldt flat over Bull Creek; Flat over Bull Creek Comment
  RSA89565  Rubus discolor Philip A. Munz 1954-7-23 19864 Humboldt 5 miles SE of Carlotta Comment
  RSA43337  Rubus laciniatus H. M. Pollard 1948-8-9 s.n. Humboldt New [near] Orleans. Comment
  RSA46847  Rubus leucodermis Doris K. Kildale 1927-7-3 3662 Humboldt Willow Creek Flat. Comment
  UC467840  Rubus leucodermis Joseph Burtt Davy and Walter C. Blasdale 1899-5 5423 Humboldt near Hubbards Station (nw California); near Hubbards Station Comment
  NY1043365  Rubus parviflorus D. K. Gillespie 1938-8-6 15397 Humboldt Eureka Comment
  UCSB30625  Rubus parviflorus Edwards, David 1974-8-14 Humboldt S. side of dirt road, ca 1/2 - 3/4 mi in on dirt road from jct. with Fickle Hill Rd, ca 1/4 mi E of junction of Fickle Hill Rd and Park Av. Arcata Comment
  CAS-BOT-BC156723  Rubus spectabilis Mrs. A. H. Rodda 1932-5-22 s.n. Humboldt Redwood Highway Comment
  HSC19683  Rubus spectabilis D. E. Anderson 1962-3-31 1961 Humboldt Old Hwy. 101, E side of Freshwater Lagoon Comment
  HSC47500  Rubus spectabilis Sheila Logan 1978-4-10 26 Humboldt McKinleyville, foot of Hiller Rd at Ocean Rd., near Pacific ocean and Mad River 46 Comment
  RSA183527  Rubus spectabilis M. L. Stuart 1965-4-25 20 Humboldt About 100 yards up the Fern Lake Road. Comment
  SEINET11908695  Rubus spectabilis Unknown 1977-1 7 Humboldt S end of Patricks Point State Park, ca 0.2 mi W of Hwy 101 & 5 mi N of Trinidad 61 Comment
  UC1301224  Rubus spectabilis Paul C. Hutchison 1966-5-26 2741 Humboldt near U.S. highway 101 (Prairie Creek Redwood Grove State Park); Prairie Creek Redwood Grove State Park 50 Comment
  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
  HSC57045  Rubus ursinus Overton, Butler 1979-7-24 9694 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC89583  Rubus ursinus M. Roantree 1985-4-25 5 Humboldt E side of Trinidad Head. Comment
  UCD17614  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 051 Humboldt California. Humboldt County: 23.1 miles from Ettersburg on road to Dyerville. Comment
  UCD17624  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 040 Humboldt California. Humboldt County: on left side of U.S. 101 going north, about 0.5 miles north of Rock Creek Crossing. Comment
  HSC76413  Rudbeckia californica Michael Ericksen 1981-8-21 1082 Humboldt Near Dan East Cabin 1609 Comment
  UC1199269  Rudbeckia occidentalis Joseph P. Tracy 1932-7-20 10727 Humboldt at Corral Prairie; Trinity Summit 1584 Comment
  HSC17577  Rumex acetosella Norman H. Moe 1962-3-21 Humboldt Lanphere's Place Comment
  HSC51775  Rumex acetosella Overton, Butler 1979-7-24 9644 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC59582  Rumex acetosella Rick Lundquist 1979-4-24 34 Humboldt SE corner 7th and Union St., Arcata 24 Comment
  UCD100992  Rumex acetosella Lincoln Constance 1934-6-3 807 Humboldt Bull Creek Region, South Fork Eel River. Along N side of Redwood Hwy, at Dyerville. Comment
  UC1101197  Rumex conglomeratus Malcolm A. Nobs, S. Galen Smith 1949-8-9 1236 Humboldt pond on s side of the town of Blue Lake town of Blue Lake Comment
  CAS-BOT-BC421749  Rumex conglomeratus Malcom A. Nobs; S. Galen Smith 1949-8-9 1236 Humboldt On southern side of the town of Blue Lake Comment
  HSC39980  Rumex crispus Linda M. Barker 1976-6-22 1622 Humboldt 3 mi. W of Arcata Comment
  UCD101135  Rumex crispus Lincoln Constance 1934-5-26 659 Humboldt South Fork Eel River. North Dyerville Flat grove, near Founders' Tree. 48 Comment
  HSC17821  Ruppia cirrhosa Jerry Parker 1968-10-26 212 Humboldt Big Lagoon County Park, Big Lagoon Comment
  UC672874  Ruppia maritima Joseph P. Tracy 1938-7-15 16079 Humboldt Mouth of Eel River 3 Comment
  HSC37955  Salicornia depressa Peter Sorensen 1976-6-2 Humboldt Humboldt Bay, Woodley Island Comment
  CAS-BOT-BC132711  Salix A. T. Whittemore 1980-3-15 80 -005 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  UC1173608  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14267 Humboldt meadows at Water Dog Lakes; Trinity Summit 1828 Comment
  CAS-BOT-BC103817  Salix exigua Harold E. Parks; Joseph P. Tracy 1931-5-17 0967 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  SBBG29091  Salix exigua var. hindsiana C. R. Ball, H. Parks, J. Tracy 1932-5-17 1335 Humboldt above Trinity River, 1 mi below bridge on Trinity Hwy 152 Comment
  UC481312  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 975 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  CAS-BOT-BC107723  Salix hookeriana Alice Eastwood 1923-8-17 12320 Humboldt Samoa Comment
  CAS-BOT-BC107772  Salix hookeriana Harold E. Parks; Susan T. Parks 1932-4-10 1103 a Humboldt Little River Lagoon, Trinidad Comment
  CAS-BOT-BC107775  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-12 1246 Humboldt Gravelly floodplain of Van Dezen River at Blue Slide 91 Comment
  HSC19953  Salix hookeriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-12 1246 Humboldt Van Duzen River at Blue Slide 91 Comment
  HSC19959  Salix hookeriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-11 1225 Humboldt 1 mi. N of Samoa, near coast 0 Comment
  HSC90764  Salix hookeriana Gail Newton 1983-6-5 3641 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC96374  Salix hookeriana Gordon Leppig 1999-7-9 1186 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  JEPS12947  Salix hookeriana Joseph P. Tracy 1931-10-18 9742 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  JEPS14758  Salix hookeriana Joseph P. Tracy 1926-1-10 7345 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  SBBG59105  Salix hookeriana H. E. Parks 1931-5-12 952 Humboldt Samoa, Humboldt Bay Comment
  SD938  Salix hookeriana Harold E. Parks 1931-5-28 1000 Humboldt Little River Lagoon 0 Comment
  UC1173619  Salix hookeriana Joseph P. Tracy 1936-2-23 14773 Humboldt Fortuna Eel River (bank of river) 15 Comment
  UC275495  Salix hookeriana Joseph P. Tracy 1925-11-1 7303 Humboldt Shiveley Northern Coast Ranges, Shiveley 60 Comment
  UC303030  Salix hookeriana Joseph P. Tracy 1926-3-14 7388 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC469118  Salix hookeriana Joseph P. Tracy 1931-9-20 9686 Humboldt Little River Northern Coast Ranges (mouth, edge of sand dunes) 6 Comment
  UC469128  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC470436  Salix hookeriana Joseph P. Tracy 1931-10-18 9741 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  UC481264  Salix hookeriana Harold E. Parks 1931-5-28 999 Humboldt Little River Lagoon Comment
  UC519333  Salix hookeriana Joseph P. Tracy 1933-5-20 12263 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UCD111041  Salix hookeriana Linda M. Barker 1976-4-30 1422 Humboldt 3 miles west of Arcata. Comment
  JEPS14749  Salix jepsonii Joseph P. Tracy 1932-7-13 10506 Humboldt Corral Prairie Trinity Summit; Klamath Mts. 1524 Comment
  UC481239  Salix lasiandra subsp. lasiandra Harold E. and Susan T. Parks 1931-8-15 1078 Humboldt Van Duzen R. Blue Slide; , Blue Slide 100 Comment
  UC481261  Salix lasiandra subsp. lasiandra Harold E. Parks 1931-5-20 991 Humboldt Blue Lake Mad R., Blue Lake 15 Comment
  CAS-BOT-BC125216  Salix lasiandra var. lasiandra W. J. Ferlatte 1967-6-13 1120 Humboldt Cranell 3 Comment
  CAS-BOT-BC125218  Salix lasiandra var. lasiandra Harold E. Parks; Susan T. Parks 1932-5-12 01150 Humboldt Near bridge at mouth of Maple Creek, Big Lagoon Comment
  CAS-BOT-BC125221  Salix lasiandra var. lasiandra Harold E. Parks; Joseph P. Tracy 1931-5-17 0966 Humboldt Mouth of Willow Creek at Trinity River, on banks of Willow Creek 150 Comment
  JEPS14790  Salix lasiandra var. lasiandra Joseph P. Tracy 1933-7-16 12772 Humboldt at McKay Camp S. Fork Mt.; Northern Coast Ranges 1676 Comment
  CAS-BOT-BC107576  Salix lasiolepis Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107578  Salix lasiolepis Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107608  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-17 1323 Humboldt On west slpe of Berry's Mountain, east of Redwood Creek, on Trinity Highway 762 Comment
  CAS-BOT-BC107612  Salix lasiolepis Harold E. Parks 1931-8-25 1059 Humboldt Blue Slide, Van Duzen River 90 Comment
  CAS-BOT-BC107615  Salix lasiolepis Harold E. Parks 1931-3-31 9327 Humboldt Redwood Creek, at Berry's 274 Comment
  HSC20017  Salix lasiolepis J. P. Tracy 1933-4-9 10968 Humboldt Bridgeville, along Van Duzen River 229 Comment
  HSC98689  Salix lasiolepis Cara Witte 2008-9-13 1042 Humboldt Forest Service Road 4N38. 1/2 mile south of intersection to Tri Board Camp. 1506 Comment
  JEPS12917  Salix lasiolepis Joseph P. Tracy 1927-8-7 8305 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS14776  Salix lasiolepis Joseph P. Tracy 1933-3-19 10931 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  LA208778  Salix lasiolepis Joseph P. Tracy; 1933-4-2 10959 Humboldt Berry's Mountain; on Trinity Hwy; E of Redwood Creek 761 Comment
  UC1196657  Salix lasiolepis Joseph P. Tracy 1913-6-18 4197 Humboldt Dinsmore's Ranch Northern Coast Ranges, valley of Van Duzen River (opposite Buck Mt.) 762 Comment
  UC481808  Salix lasiolepis H. P. Bracelin 1931-5-1 269 Humboldt Sylvandale, between Miranda and Meyers South Fork of Eel River Comment
  UC490550  Salix lasiolepis Joseph P. Tracy 1932-4-24 9802 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC506386  Salix lasiolepis Joseph P. Tracy 1932-6-19 10248 Humboldt Buck Mountain Northern Coast Ranges (nw slope, lower foothills) 762 Comment
  UC506514  Salix lasiolepis B. S. and C. S. Ball 1933-9-12 2531 Humboldt 2 mi. n. Trinidad (at home of Mrs. and Mrs. Harold E. Parks) Comment
  CAS-BOT-BC107300  Salix lasiolepis var. bigelovii Doris K. Kildale 1926-12-19 2873 Humboldt South Fork 51 Comment
  CAS-BOT-BC107410  Salix lasiolepis var. lasiolepis Doris K. Kildale 1927-5-13 3148 Humboldt Redwood Creek at Berry's 289 Comment
  POM214862  Salix lasiolepis var. sandbergii Joseph P. Tracy 1933-4-2 10959 Humboldt Berry's Mountain. On Trinity Hwy. E of Redwood Creek. 762 Comment
  CAS-BOT-BC125610  Salix melanopsis Doris K. Kildale 1927-5-13 3143 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC125634  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  CAS-BOT-BC125639  Salix melanopsis Harold E. Parks 1931-8-25 01060 Humboldt Blue Slide, Van Duzen River 90 Comment
  HSC20027  Salix melanopsis H. E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge, Trinidad 75 Comment
  LA208881  Salix melanopsis Harold E. Parks; 1931-5-14 965 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  UC1196570  Salix melanopsis Joseph P. Tracy 1932-7-31 10292 Humboldt at mouth of Larrabee Creek Eel R.; Northern Coast Ranges, Eel R. 60 Comment
  UC512012  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1235 Humboldt 1 1/2 mi. e. Alton (floodplain of Van Duzen R.); Van Duzen R. 30 Comment
  UC519364  Salix melanopsis Joseph P. Tracy 1933-6-9 12533 Humboldt along Eel R. Shively; Northern Coast Ranges, Eel R. 30 Comment
  CAS-BOT-BC129250  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1210 a Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad, appraximately at sea level. Comment
  HSC20080  Salix scouleriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-11 1219 Humboldt 1 mi. N of Samoa, near coast 0 Comment
  SBBG57985  Salix scouleriana H. E. Parks 1931-5-12 951 Humboldt Bishop Pine Lodge, Trinidad 150 Comment
  UC54926  Salix scouleriana J. P. Tracy 1901-2-3 991 Humboldt immediate vicinity Eureka 0 Comment
  UCD111733  Salix sessilifolia Carleton R. Ball; Harold E. Parks, and Joseph P. Tracey 1932-5-12 01245 Humboldt Van Duzen River at Blue Slide. 91 Comment
  CAS-BOT-BC128986  Salix sitchensis Harold E. Parks 1931-3-25 903 Humboldt Orick, on Van Duzen River 6 Comment
  CAS-BOT-BC128988  Salix sitchensis Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-12 1230 Humboldt Floodplain of the Van Duzen River, 1 1/2 miles east of Alton 30 Comment
  HSC20101  Salix sitchensis C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-13 1256 Humboldt Mad River at Engelhart gravel pit, 2 mi. E of Redwood Hwy. and above Blue Lake Rd. Comment
  HSC20104  Salix sitchensis J. P. Tracy 1933-7-16 12773 Humboldt S Fork Mtn., Mckay Camp 1677 Comment
  HSC43419  Salix sitchensis R. Sutherland 1978-2-18 6 .18278 Humboldt S side Mattole River 8 Comment
  HSC90438  Salix sitchensis Jean Hanson 1980-3-8 13 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  POM87680  Sambucus callicarpa L. R. Abrams 1922-6-27 8281 Humboldt Big Lagoon south of Orick Comment
  UC602515  Sambucus mexicana Joseph P. Tracy 1930-7-19 9088 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC235119  Sambucus racemosa var. racemosa L. R. Abrams; R. Bacigalupi 1922-6-25 8281 Humboldt Big Lagoon south of Orick Comment
  UC154131  Sanicula bipinnatifida Joseph P. Tracy 1909-8-1 3056 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1197092  Sanicula graveolens Joseph P. Tracy 1935-7-14 14069 Humboldt Grouse Mountain 1524 Comment
  JEPS986  Sanicula laciniata Joseph P. Tracy 1923-3-17 6163 Humboldt Northern Coast Ranges, Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  UC1222813  Sanicula tracyi Joseph P. Tracy 1950-7-6 19022 Humboldt 3 mi s Burr Valley (Sproston's Place) Comment
  HSC74271  Sanicula tuberosa M. A. Baker 1980-5-23 1378 Humboldt Near Buck Mtn. 1524 Comment
  POM232030  Satureja douglasii I. L. Wiggins 1930-7-11 4681 Humboldt Near Samoa. Comment
  UC666815  Saxifraga aprica Joseph P. Tracy 1935-7-24 14188 Humboldt near Ranger Station (Trinity Summit); Trinity Summit 1828 Comment
  JEPS42981  Saxifraga ferruginea Jos. P. Tracy 1932-7-18 10710 Humboldt head of Brett Hole (Trinity Summit); , Brett Hole Comment
  UC492230  Saxifraga marshallii Joseph P. Tracy 1927-5-13 7997 Humboldt Willow Creek Canyon,at mouth of East Fork of Willow Creek Willow Creek Canyon; Northern Coast Ranges, , Willow Creek 457 Comment
  UC709459  Saxifraga marshallii Joseph P. Tracy 1941-3-26 16834 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC673256  Saxifraga mertensiana Lincoln Constance, Reed C. Rollins 1942-5-11 2869 Humboldt 3 mi w of East Fork of Willow Creek; North Coast Ranges Comment
  HSC74483  Saxifragopsis fragarioides Gail Newton 1980-7-24 1773 Humboldt Near Somes Mtn. 1615 Comment
  CAS-BOT-BC111702  Schoenoplectus pungens var. badius LeRoy Abrams; Rimo Bacigalupi 1922-6-25 8268 Humboldt Big Lagoon south of Orick Comment
  JEPS79980  Scirpus cernuus Joseph P. Tracy 1938-6-16 15942 Humboldt Trinidad 3 Comment
  UC963872  Scirpus cernuus H. E. Parks and S. T. Parks August, 1943 24244 Humboldt Spruce Cove North Coast Ranges, , Trinidad (Trinidad) 60 Comment
  JEPS95121  Scirpus pungens Vernon Oswald and Lowell Ahart 1997-9-4 8848 Humboldt Big Lagoon County Park, at sw edge of Big Lagoon Big Lagoon; North Coast Region, Big Lagoon County Park, Big Lagoon 3 Comment
  UC50825  Scirpus pungens J. P. Tracy 1902-8-10 1765 Humboldt immediate vicinity Eureka 0 Comment
  HSC23036  Scleranthus annuus D. E. Anderson 1964-1 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  HSC15632  Scoliopus bigelovii F. B. Plett 1963-4-24 30 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  RSA24328  Scoliopus bigelovii Carl B. Wolf 1941-2-28 9973 Humboldt 1.3 miles east of Redwood Creek Bridge. On the Blue Lake to Willow Creek Road. 244 Comment
  UC1103490  Scoliopus bigelovii Joseph P. Tracy 1921-3-6 5419 Humboldt Hydesville Northern Coast Ranges, Hydesville 91 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
  HSC38928  Scrophularia californica Linda M. Barker 1976-5-13 1473 Humboldt 3 mi. W of Arcata. Comment
  JEPS6741  Scrophularia californica Joseph P. Tracy 1937-7-30 15565 Humboldt 6 mi s Arcata (Fickle Hill) 609 Comment
  UCD124815  Scrophularia californica Linda M. Barker 1976-5-13 1473 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  HSC91946  Scrophularia californica E. Mackey 1986-5-13 Humboldt Patrick's Point State Park, edge of coastal stand Comment
  UC1011942  Scrophularia californica Francis W. Pennell 1949-7-6 26080 a Humboldt 2 mi nw Pepperwood (along Eel river, Rte 101) 30 Comment
  UC1011943  Scrophularia californica Francis W. Pennell 1940-7-6 26080 a Humboldt 2 mi nw Pepperwood (along Eel River, Rte 101) 30 Comment
  UC1222865  Scutellaria antirrhinoides Joseph P. Tracy 1950-6-15 18788 Humboldt 7 mi n of Harris (Mail Ridge, Jenk's Ranch); Mail Ridge, Jenk's Ranch Comment
  HSC100456  Sedum Carl C. Marshall Jun 1885 100 Humboldt Pine Creek Ridge. Comment
  UC1225753  Sedum laxum subsp. heckneri Joseph P. Tracy 1948-9-5 18190 Humboldt 1 mi s Grizzly Camp (head of Little Hors-Linto Creek, Trinity Summit); Trinity Summit, head Little Hors-Linto Creek 1371 Comment
  HSC57121  Sedum obtusatum subsp. retusum Overton, Butler 1979-7-25 9867 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC59359  Sedum obtusatum subsp. retusum M. A. Baker 1979-6-28 945 Humboldt 1500 Comment
  HSC97172  Sedum radiatum Erin Lonergan, Benjamin Hart 2007-6-11 7 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1524 Comment
  UC1225752  Sedum radiatum Joseph P. Tracy 1948-5-31 18000 Humboldt Harris Harris (on rock ledge in shade) 762 Comment
  HSC98572  Sedum radiatum Cara Witte 2007-6-14 285 Humboldt White Oak Opening. Along Kinsey Ridge. Near hunting camp. 1238 Comment
  UC205179  Sedum radiatum Charlotte M. Wilder 1912-10-1 Humboldt Upper Van Duzen River, along trail Upper Van Duzen River 914 Comment
  HSC6480  Sedum spathulifolium var. spathulifolium William J. Ferlatte, B. D. Rogers 1966-6-15 2103 Humboldt Larabee Valley 762 Comment
  CAS-BOT-BC62180  Selaginella oregana Doris K. Kildale 1926-1-24 1492 Humboldt Kneeland Prairie summit 853 Comment
  UC249773  Selaginella wallacei Joseph P. Tracy 1924-3-9 6607 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC33721  Senecio elegans B. Sullivan 1975-5-24 106 Humboldt Off Samoa Blvd. across from the boat landing Comment
  UC449997  Senecio glomeratus Joseph P. Tracy 5117 Humboldt Eureka Comment
  JEPS37418  Senecio glomeratus W. L. Jepson 1932-8-8 16534 Humboldt Dyerville Perrott Creek, Dyerville 304 Comment
  HSC6119  Senecio integerrimus var. major D. E. Anderson 1965-5-8 3654 Humboldt About 3.5 mi. N of Willow Creek along road running along E side of Trinity River Comment
  HSC98548  Senecio integerrimus var. major Cara Witte 2008-6-9 696 Humboldt Board Camp Mountain. Forest Serivce Road 4E27. Fork Camp. 1509 Comment
  UC917220  Senecio minimus J. M. Tucker 1948-9-4 1863 Humboldt Becks Ranch, Hydesville Comment
  HSC74692  Senecio sylvaticus Gail Newton 1981-7-22 2266 Humboldt Near Bug Creek 1375 Comment
  UC175387  Senecio sylvaticus J. P. Tracy 1907-6-20 2571 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC364331  Senecio triangularis Doris K. Kildale 1925-8-16 1172 Humboldt Trinity Summit - Elk Horn Prairie 1524 Comment
  RSA167391  Senecio triangularis Joseph P. Tracy 1950-7-31 19241 Humboldt Northeast side of top of Grouse Mountain. 1524 Comment
  JEPS37267  Senecio vulgaris Lincoln Constance 1934-6-12 869 Humboldt Dyerville, Bull Creek road and n bank of South Fork Eel River South Fork Eel River, Bull Creek Region Comment
  HSC12561  Senecio vulgaris D. La Conte 1970-11-7 10 Humboldt Comment
  HSC6130  Senecio vulgaris R. D. Modafferi 1965-3-14 9 Humboldt 1.3 mi. S of Trinidad on old Hwy. 101 305 Comment
  HSC95584  Senecio vulgaris Andrea Pickart 2002-3-14 4 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  SEINET11802700  Senecio vulgaris J. P. Tracy 1943-1 17454 Humboldt Eel River Bar at mouth of Van Duzen, near Alton Comment
  JEPS48274  Sequoia sempervirens Willis Corbitt 1931-4-8 Humboldt Scotia Comment
  RSA383928  Sequoia sempervirens M. B. Dunkle 1936-8-22 4858 Humboldt Williams Grove, Eel River. 213 Comment
  HSC104122  Sericocarpus oregonensis Julie Kierstead Nelson, Len Lindstrand III 2010-9-20 2010035 Humboldt Comment
  HSC1093  Sherardia arvensis W. Lanphere 1937-2-16 Humboldt H.S.C. Campus Comment
  JEPS12497  Sherardia arvensis W. L. Jepson 1934-5-7 Humboldt Buckeye Prairie; Bull Creek Comment
  UC602552  Sherardia arvensis Joseph P. Tracy 1937-6-20 15337 Humboldt 10 mi from mouth Bear River Comment
  POM17181  Sherardia arvensis J. B. Feudge 1923-8-1 49 Humboldt Fortuna. 15 Comment
  CAS-BOT-BC205572  Sidalcea malachroides Joseph P. Tracy 1936-5-17 14812 Humboldt Fickle Hill, 6 miles Southeast of Arcata 609 Comment
  CAS-BOT-BC205575  Sidalcea malachroides Alice Eastwood; John Thomas Howell 1937-6-23 4855 Humboldt 8 miles from Korbel on road to Maple Creek Comment
  UC1197961  Sidalcea malachroides Joseph P. Tracy 1937-7-30 15566 Humboldt 6 mi se Arcata (Fickle Hill); se of Arcata, Fickle Hill 609 Comment
  UC1222506  Sidalcea malachroides Joseph P. Tracy 1950-6-8 18743 Humboldt one mi e Cape Mendocino (near top of Cape Ridge); e of Cape Mendocino, Cape Ridge 152 Comment
  HSC62917  Sidalcea malviflora J. M. DiTomaso 1979-5-20 1060 Humboldt Top of Elks Head, 1 mi. N of Trinidad Comment
  HSC57879  Sidalcea oregana subsp. spicata Overton, Butler 1979-7-31 11416 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC58187  Sidalcea oregana subsp. spicata G. L. Clifton, Griswold 1979-8-2 12277 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC161013  Silene antirrhina Joseph P. Tracy 1908-6 2801 Humboldt opposite Buck Mountain (Valley of Van Duzen River, in sand bar in river); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA183641  Silene californica D. E. Anderson 1965-5-15 3709 Humboldt Along Hw. 96, 1.9 miles north of Willow Creek. Comment
  UC659355  Silene californica Lincoln Constance, Alan A. Beetle 1940-5-16 2610 Humboldt coastal bluffs above Alton; above Alton Comment
  HSC56939  Silene campanulata Overton, Butler 1979-7-23 9418 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  JEPS23250  Silene campanulata Joseph P. Tracy 1932-7-18 10704 Humboldt head of Brett Hole , head of Brett Hole (Trinity Summit) 1828 Comment
  SEINET10871683  Silene campanulata Imper 1983-7-6 IMPER s.n. Humboldt Six rivers national forest. T8n,r5e,sec.11. 2.5 Miles e of turnoff to big hill L.o., Hoopa indian reservation, roadside bank, petals pink, inforescence Glandular and pungent, serpintine influence, with knobcone, ceanothus Integerrimus, hickleberry, silene californica, holodescus spp., Arctostaphyllos Spp. 975 Comment
  POM160266  Silene campanulata subsp. glandulosa Joseph P. Tracy 1926-6-20 7623 Humboldt Horse Mountain. 1524 Comment
  RSA21442  Silene campanulata subsp. glandulosa C. B. Wolf 1937-8-12 9206 Humboldt North Coast Range, South Fork Mountain, 0.6 miles S of Blake Lookout. 1677 Comment
  JEPS23246  Silene hookeri Joseph P. Tracy 1939-5-14 16283 Humboldt lower foothills of nw slope Buck Mountain 914 Comment
  RSA477903  Silene hookeri Miss Hutchinson 1927-05 s.n. Humboldt [Unspecified] Comment
  CAS-BOT-BC389058  Silene laciniata subsp. californica H. E. Parks 1930-5-1 0751 Humboldt Vicinity of Hydesville Comment
  HSC4174  Silene laciniata subsp. californica R. Spellenberg 1964-6-16 434 Humboldt 0.25 mi. W of Hwy. 299 bridge over S Fork of Trinity River Comment
  HSC95117  Silene laciniata subsp. californica Chris Lee 2002-4-27 23 Humboldt Willow Creek, Brannon Mtn. Rd., .5 mi. W of jct. with Hwy. 96 Comment
  CAS-BOT-BC75283  Sisymbrium officinale Doris K. Kildale 1926-4-4 1725 Humboldt Eureka. Comment
  UC1198794  Sisymbrium officinale Joseph P. Tracy 1904-7-24 2125 Humboldt immediate vicinity of Eureka 0 Comment
  UC1196377  Sisyrinchium bellum J. P. Tracy 1906-7-1 2518 Humboldt immediate vicinity of Eureka; Ricks Prairie 0 Comment
  RSA699282  Sisyrinchium californicum J. R. Bruff 1930-08 s.n. Humboldt North of Trinidad Comment
  UCD126814  Solanum americanum Robert F. Thorne; P. Everett 1965-8-5 35147 Humboldt Samoa Dunes. 3 Comment
  HSC47104  Solanum aviculare J. O. Sawyer 1978-11-5 3324 Humboldt Old Stagecoach rd. 1/5 mi. N of entrance to Trinidad Beach State Park Comment
  HSC25425  Solanum physalifolium var. nitidibaccatum J. P. Smith 1972-11-12 5827 Humboldt Arcata, adjacent to Mad River Hospital Comment
  UC1196152  Solanum umbelliferum Joseph P. Tracy 1935-7-20 14325 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1828 Comment
  HSC103077  Solanum xanti Sydney Carothers 2014-6-11 2 Humboldt Six Rivers National Forest, Lassics Botanical Area; south face Mt. Lassic, along trail to summit 1772 Comment
  UC581769  Solidago elongata Joseph P. Tracy 1937-8-12 15654 Humboldt Snow Camp 1402 Comment
  SEINET11383162 Image available Solidago spathulata S. K. Harris 1939-1 990 Humboldt At Samoa. Comment
  CAS-BOT-BC364968  Solidago velutina subsp. californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC1199285  Soliva sessilis Joseph P. Tracy 1919-5-31 5166 1/2 Humboldt Valley of Trinity River near mouth Willow Creek; Northern Coast Ranges, Valley of Trinity River, mouth Willow 152 Comment
  UC127601  Soliva sessilis Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5684 Humboldt Hoopa Mt. North-Western California, Hoopa Mt. Comment
  HSC35009  Soliva sessilis J. O. Sawyer 1975-5-20 2695 Humboldt 1445 Chester Ave., Sunnybrae Comment
  HSC6218  Sonchus asper S. R. Johnson 1965-3-15 11 Humboldt 1 mi. N of Luffenholtz Beach Comment
  UC198647  Sparganium emersum var. emersum Joseph P. Tracy 1917-5-30 4808 Humboldt near mouth of Little River; Northern Coast Ranges 6 Comment
  CDA26356  Spartina densiflora G. D. Barbe, T. C. Fuller 1989-6-7 4320 Humboldt Tidal flat 0.4 miles north of Highway 255 bridge, at New Naval Base Road. 0 Comment
  HSC94162  Spartina densiflora L. J. Heflin 1984-9-23 43 Humboldt Allen Marsh at Arcata Marsh and Wildlife Sanctuary Comment
  HSC4235  Spergula arvensis R. I. Bonn 1965-5-9 39 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC79185  Spergula arvensis L. P. Janeway 1984-2-4 710 Humboldt Along Bayside Rd. NW of Jacoby Creek School 18 Comment
  RSA472777  Spiraea douglasii T. Gertrude Williamson 1924-7-12 s.n. Humboldt Arcata. Comment
  UC1128714  Spiraea douglasii H. L. Person 1932-7-19 Humboldt Lindsay Creek; Eureka Quad. Comment
  UC13088  Spiraea douglasii Harley P. Chandler May 1901 1197 Humboldt Humboldt Bay; North Coast Ranges 30 Comment
  HSC36653  Spiranthes romanzoffiana J. D. Ackerman 1975-8-2 618 Humboldt Hwy. 101 between Eureka and Arcata, along Humboldt Bay across from Murray Field. Comment
  UC668222  Stachys ajugoides var. ajugoides Joseph P. Tracy 1938-6-15 15931 Humboldt Fortuna 18 Comment
  UCLA71147  Stachys ajugoides var. rigida Harold E. and Susan T. Parks 1937-7 24025 Humboldt Spruce Cove Trinidad Comment
  CDA41010  Stachys ajugoides var. rigida T. C. Fuller 1958-6-17 593 -58 Humboldt Ferndale. 0 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
  UC1239723  Stachys arvensis H. B. Tucker 1935-3-20 Humboldt Moron Ranch Arcata Bottom 9 Comment
  BLMAR563  Stachys bergii Jennifer Wheeler 2009-7-21 563 Humboldt Headwaters Forest Reserve, along Elk River trail 60 Comment
  POM283393  Stachys bullata Lyman Benson 1929-7-19 s.n. Humboldt Mouth of Matole [Mattole] River. Comment
  HSC40957  Stachys chamissonis Linda M. Barker 1976-8-24 1683 Humboldt 3 mi. W of Arcata Comment
  HSC96495  Stachys chamissonis Gordon Leppig 1997-6-19 458 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC604661  Stachys chamissonis Joseph P. Tracy 1938-8-20 16124 Humboldt Alton 18 Comment
  HSC81924  Stachys mexicana Thomas W. Nelson, Jane P. Nelson 1979-7-3 4955 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC76525  Stachys rigida Teresa Prendusi 1981-7-24 488 Humboldt Near Whiteys Peak 1585 Comment
  HSC58075  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-8-1 11970 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC4272  Stellaria media S. J. Hawks 1965-4-3 13 Humboldt W of Eureka City Airport Comment
  HSC75438  Stellaria media J. O. Sawyer 1980-7-18 3580 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC4271  Stellaria media S. R. Johnson 1965-3-23 17 Humboldt 1 mi. N of Luffenholtz Beach 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
  HSC58416  Stipa occidentalis var. californica Griswold, Butler 1979-7-12 7217 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CAS-BOT-BC87607  Streptanthus tortuosus Doris K. Kildale 1928-5-27 5955 Humboldt Kneeland Prairie. 853 Comment
  CAS-BOT-BC87612  Streptanthus tortuosus Joseph P. Tracy 1932-7-12 10457 Humboldt Klamath Mountains. Trinity Summit. Head of Brett Hole. 1828 Comment
  HSC73564  Streptanthus tortuosus Gail Newton 1980-7-14 1501 Humboldt Near Last Chance Ridge 1219 Comment
  UC161577  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy July 1908 2764 Humboldt ridge between Van Duzen and Mad Rivers near Low Gap; Northern Coast Ranges 914 Comment
  UC562688  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1935-7-24 14185 Humboldt near ranger station; Trinity Summit 1828 Comment
  UC902000  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1947-7-9 17845 Humboldt Horse Mountain 1432 Comment
  HSC57200  Streptanthus tortuosus var. tortuosus Terry Griswold, Marvin Butler 1979-7-10 7106 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  SBBG88906  Stuckenia pectinata A. Keedy 1988-9-20 11 Humboldt off Alder Grove Rd, N of Arcata, near Hwy 299, Arcata Salt Marsh Project Comment
  UC562305  Swertia radiata Joseph P. Tracy 1932-7-20 10731 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC102040  Symphoricarpos mollis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 943 Humboldt Rustic Camp, northwest of Patterson Meadows Comment
  HSC40856  Symphoricarpos mollis Thomas W. Nelson 1976-7-9 2991 Humboldt Along ridge S of E peak of Mtn. Lassic group, (Signal Pk.). 1707 Comment
  HSC58801  Symphyotrichum bracteolatum G. L. Clifton, Griswold 1979-7-31 11611 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC58804  Symphyotrichum bracteolatum G. L. Clifton, Griswold 1979-7-31 11705 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC24019  Symphyotrichum chilense R. A. Vanbianchi 1971-9-10 79 Humboldt Junction of Fieldbrook Rd. and old Hwy. 299 Comment
  OBI17003  Symphyotrichum chilense Carl B. Wolf 1937-9-14 9355 Humboldt Redwood hwy 4 mi N of Loleta 8 Comment
  UC1222984  Symphyotrichum chilense Joseph P. Tracy 1950-10-7 19383 Humboldt e of, (on the Trinity Highway) Redwood Creek; Berry's Mountain 548 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
  JEPS32727  Symphytum asperum Kate Jared Stirring 1923-6-5 Humboldt Arcata Comment
  UC1222192  Symphytum asperum Joseph P. Tracy 1949-6-28 18358 Humboldt Salmon Creek Valley s. end Humboldt Bay, Salmon Creek Valley Comment
  UC1239632  Symphytum asperum Joseph P. Tracy 1933-6-25 12629 Humboldt around Humboldt Bay (Salmon Creek Valley); Northern Coast Ranges, , Salmon Creek Valley 30 Comment
  UC213323  Symphytum asperum Joseph P. Tracy June 1919 5181 Humboldt Northern Coast Region, Humboldt Bay, valley of Salmon Creek 30 Comment
  UC902207  Synthyris reniformis Joseph P. Tracy 1941-4-8 16810 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 609 Comment
  HSC49169  Synthyris reniformis J. O. Sawyer 1977-4-23 2836 Humboldt Along Big Hill Rd., E of Hoopa Comment
  JEPS9928  Synthyris reniformis Joseph P. Tracy 1926-2-28 7380 Humboldt East Fork of Willow Creek (Willow Creek Canyon); Northern Coast Ranges 457 Comment
  UC1198054  Synthyris reniformis Joseph P. Tracy 1926-1-24 7348 Humboldt Lawrence Creek, at crossing of the Kneeland Road; Lawrence Creek 457 Comment
  CAS-BOT-BC376724  Tanacetum bipinnatum David D. Keck; J. Clausen 1935-6-16 3388 Humboldt Mouth of Little River Comment
  HSC95076  Tanacetum bipinnatum Andrea Pickart 2002-7-2 144 Humboldt King Salmon Sand Spit 0 Comment
  CAS-BOT-BC376729  Tanacetum bipinnatum Peter H. Raven 1962-8-31 18080 Humboldt South end of Big Lagoon Comment
  CHSC55891  Tanacetum camphoratum L. P. Janeway 1987-7-31 2543 Humboldt Vicinity of Eureka; North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  UCSB25217  Tanacetum douglasii J. R. Haller 1967-6-17 2181 Humboldt collected 10.0 mi N, at Clam Beach County Park, along U S Highway 101 Arcata - Clam Beach County Park, U S Highway 101, and Arcata Comment
  JEPS36856  Taraxacum officinale Lincoln Constance 1934-6-12 864 Humboldt Bull Creek road and n bank of South Fork Eel River, Dyerville South Fork Eel River, Bull Creek Region, Dyerville Comment
  UC1197330  Tauschia kelloggii Joseph P. Tracy 1926-4-11 7407 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  CAS-BOT-BC85217  Taxus brevifolia Doris K. Kildale 1929-2-12 6954 Humboldt Willow Creek Canyon Comment
  SDSU2035  Taxus brevifolia D. F. Howe 1964-8-7 4128 Humboldt 8.2 miles from #96 on Mill Creek Road, Hoopa Valley. 1067 Comment
  HSC102633  Tellima grandiflora M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1618 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC89427  Tellima grandiflora P. A. Daly 1984-5-8 4 Humboldt Trinidad Head 61 Comment
  HSC79487  Tellima grandiflora Kenneth Clark 1980-3-23 536 Humboldt Along S Fork of Dead Man's Gulch 69 Comment
  RSA24202  Tellima grandiflora Carl B. Wolf 1941-3-3 9994 Humboldt N. Coast Range. 7.5 mi. N. of Ettersburg on rd. to Honeydew. 305 Comment
  UC160904  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1908-6 2714 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS79993  Thlaspi californicum Joseph P. Tracy 1921-5-30 5483 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  NY185794  Thlaspi californicum V. Rattan 06 1882 s.n. 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
  NY17196  Thuja plicata A. Kellogg 1868-1 933 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
  NY17205  Thuja plicata A. Kellogg 1868-1 933 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
  OBI36631  Thuja plicata David J. Keil 1983-7-2 17308 Humboldt Ca. 10.5 mi E of jctn with US 101 along SR 299 Comment
  CAS-BOT-BC81304  Thuja plicata Belle Richardson Jackson 1939-9-15 s.n. Humboldt Trinity River, near Dutch Comment
  CAS-BOT-BC88319  Thysanocarpus curvipes Doris K. Kildale 1929-4-25 7478 Humboldt Kneeland Prairie. 853 Comment
  CAS-BOT-BC88323  Thysanocarpus curvipes John H. Thomas 1968-4-21 14355 Humboldt About 6.4 miles south of Weitchpec (as measured along the road). 170 Comment
  RSA246667  Tiarella trifoliata var. unifoliata R. F. Thorne, Percy C. Everett 1965-8-5 35140 Humboldt Mt. Chamisal; Below summit. 534 Comment
  UCR3923  Tiarella trifoliata var. unifoliata David Whistler, H. M. Whistler 1964-7-29 640729- 5 Humboldt 0.2 mi north of Meyers Flats on U.S. 101 75 Comment
  RSA151820  Tiarella trifoliata var. unifoliata H. K. Sharsmith, Francia Chisaki 1959-8-22 4753 Humboldt At Happy Camp. Just over Trinity County line. 915 Comment
  UC1198896  Tolmiea diplomenziesii Joseph P. Tracy 1925-11-25 7328 Humboldt near The South Fork (Trinity River Valley); Northern Coast Ranges 182 Comment
  HSC74665  Tonella tenella Gail Newton 1981-6-6 2189 Humboldt Near Pilot Ridge Trail 1314 Comment
  UC1561282  Torilis arvensis Barbara Ertter with Thomas J. Delendick 1987-5-16 6916 Humboldt Hwy 299 roadside ca 8 mi e Arcata (9 1/2 mi w of Lord Ellis summit); w of Lord Ellis summit Comment
  HSC45069  Torilis arvensis R. Sutherland 1978-5-16 7 .16578 Humboldt 155 Comment
  HSC72099  Torilis arvensis J. P. Smith, L. Barker, J. Cole 1976-7-27 8948 Humboldt Berry Summit on abandoned hwy. Comment
  SEINET244810 Image available Torreyochloa pallida var. pauciflora J. P. Tracy 1934-7-18 13429 Humboldt Grouse Mountain. 1524 Comment
  CAS-BOT-BC169177  Toxicodendron diversilobum Joseph P. Tracy 1949-8-8 18404 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC3140  Toxicodendron diversilobum R. E. Thill 1965-5-1 26 Humboldt 0.25 mi. from Korbel on the Camp Bauer Rd. Comment
  JEPS63914  Toxicodendron diversilobum W. L. Jepson 1932-7-27 16430 Humboldt on way to Bull Creek Dyerville Comment
  UC1257819  Tracyina rostrata R. Ornduff 1960-6-1 6185 Humboldt 3.3 mi n bridge across Eel Bridge (on road following Dobbyn Creek from Alder Point to Blockburg); Dobbyn Creek Comment
  HSC97982  Triantha occidentalis subsp. occidentalis Cara Witte 2007-7-10 473 Humboldt Horse Mountain Botanical Area. Forest service Road 6N18. 1434 Comment
  HSC44771  Trientalis latifolia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3550 Humboldt Along north side of ridge between Bear and Blanket Creeks, unsurveyed section east of Sec. 25 1494 Comment
  UC33444  Trifolium barbigerum W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  BLMAR740  Trifolium barbigerum Jennifer Wheeler 2015-5-18 740 Humboldt King range, strawberry rock grazing allotment down windy point 243 Comment
  RSA91561  Trifolium bifidum var. decipiens F. W. Peirson 1926-7-12 7031 Humboldt Redwood Creek, Orick. Comment
  RSA168861  Trifolium dichotomum Joseph P. Tracy 1943-5-9 17420 Humboldt Trinity River at Willow Creek. Comment
  POM118629  Trifolium dubium Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  HSC45122  Trifolium dubium R. Sutherland 1978-5-12 1 .12578 Humboldt Mckee Flat 288 Comment
  UC1130015  Trifolium eriocephalum var. eriocephalum H. S. Yates 1936-6-17 5720 Humboldt Burr Valley South Fork Pk. quad 1036 Comment
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Feb 21 2013
  UC1197033  Trifolium fucatum Joseph P. Tracy 1932-5-10 9963 Humboldt near Petrolia (Mattole River); North Coast Ranges 15 Comment
  UC162803  Trifolium fucatum Joseph P. Tracy 1906-7-4 2532 Humboldt near Hydesville; Northern Coast Ranges 60 Comment
  UC495732  Trifolium fucatum Joseph P. Tracy 1927-6-5 8100 Humboldt s Yager Creek (valley); Northern Coast Ranges 762 Comment
  UC1223453  Trifolium gracilentum Joseph P. Tracy 1933-5-20 12233 Humboldt s point of cape (near ocean shore); Cape Mendocino Comment
  UC1223452  Trifolium howellii Joseph P. Tracy 1934-7-18 13449 Humboldt at top Grouse Mtn 1524 Comment
  HSC58663  Trifolium longipes G. L. Clifton, Griswold 1979-8-1 12012 Humboldt Near High Springs, close to the town of Hoopa 1798 Comment
  HSC75475  Trifolium longipes J. O. Sawyer 1980-7-18 3622 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  POM214886  Trifolium longipes subsp. elmeri Joseph P. Tracy 1932-7-13 10525 Humboldt Trinity Summit, Corral Prairie. Comment
  HSC97567  Trifolium longipes subsp. shastense C. Witte 2007-5-18 44 Humboldt Near Bottleneck Spring. 1575 Comment
  UC1223370  Trifolium longipes var. hansenii Joseph P. Tracy 1950-8-8 19298 Humboldt Croghan Hole Trinity Summit 1676 Comment
  UC495658  Trifolium longipes var. oreganum Joseph P. Tracy 1927-6-12 8122 Humboldt Horse Ranges Northern Coast Ranges Comment
  UC1223360  Trifolium macraei Joseph P. Tracy 1936-5-30 14841 Humboldt Samoa Sand Dunes Comment
  HSC73818  Trifolium microcephalum Gail Newton 1980-6-7 118 Humboldt Near Brush Mtn. 1128 Comment
  UC1223348  Trifolium microdon Joseph P. Tracy 1950-6-18 18840 Humboldt 1 mi e Cape Mendocino (at roadside on top of ridge); Cape Ridge 304 Comment
  UC1197489  Trifolium oliganthum Joseph P. Tracy 1922-4-30 6002 Humboldt near Willow creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UCSB30597  Trifolium pratense Edwards, David 1974-7-13 Humboldt North side of 7th St. just W. of its overpass of U.S. 101, Arcata 18 Comment
  BLMAR745  Trifolium subterraneum Jennifer Wheeler 2015-5-18 745 Humboldt King range, strawberry rock grazing allotment down windy point 243 Comment
  JEPS4133  Trifolium variegatum var. variegatum Joseph P. Tracy 1932-5-22 10123 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  UC16761  Trifolium willdenovii Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5342 d Humboldt Harris Comment
  UC1223318  Trifolium willdenovii Joseph P. Tracy 1942-5-16 17358 Humboldt 1 mi ne Garberville (on rd to Harris) 304 Comment
  UC1223322  Trifolium willdenovii Joseph P. Tracy 1935-6-8 13945 Humboldt along hwy (at n end of lagoon); Big Lagoon Comment
  BLMAR259  Trifolium wormskioldii Jennifer Anthony-Wheeler 1998-4-22 259 Humboldt King range, strawberry rock grazing allotment 280 Comment
  HSC46954  Trifolium wormskioldii J. P. Smith, T. Nelson 1977-6-30 9207 Humboldt Samoa Peninsula just E of the drag strip. Comment
  UC160991  Trifolium wormskioldii Joseph P. Tracy 1911-6-25 3246 Humboldt Eureka Northern Coast Region 0 Comment
  SEINET12156845  Trifolium wormskioldii J. P. Tracy 1950-1 18714 Humboldt near the "Sand Cut", Wild Cat rd, 2 mi S of Ferndale Comment
  CAS-BOT-BC451803  Triglochin maritima Joseph P. Tracy 1933-8-22 12988 Humboldt Mouth of Eel River 3 Comment
  HSC14169  Triglochin maritima D. E. Anderson 1961-9-3 1779 Humboldt Along Hwy. 101 Comment
  SEINET12046256  Trillium albidum J. P. Tracy 1950-1 18646 Humboldt head of South Yager Comment
  CAS-BOT-BC133391  Trillium ovatum Alice Eastwood; John Thomas Howell 1934-4-11 1330 Humboldt Patrick's Point Comment
  CHSC2320  Trillium ovatum 1933-4-15 Humboldt Comment
  HSC47579  Trillium ovatum Sheila Logan 1978-4-10 175 Humboldt Redwood Park behind HSU campus Comment
  JEPS47275  Trillium ovatum Willis G. Corbitt 1930-5-11 Humboldt Scotia Comment
  UC176190  Trillium ovatum Joseph P. Tracy 1913-4-13 4034 Humboldt at Eureka Eureka; Northern Coast Region 0 Comment
  HSC98740  Trillium ovatum subsp. ovatum Cara Witte 2008-6-4 685 Humboldt Ammon Ridge Road. Approximately 1/2 mile east of intersection with National Forest 1. 1562 Comment
  CAS-BOT-BC521314  Trillium rivale Doris K. Kildale 1930-6-1 9739 Humboldt Klamath River at Bluff Creek 152 Comment
  CAS-BOT-BC521319  Trillium rivale Volney Rattan 1883-6-1 s.n. Humboldt Willow Creek; Pacific Coast Comment
  SEINET10458960  Triodanis biflora Chandler CHANDLER 1514 B Humboldt SOMES BAR Comment
  SEINET12324840  Triodanis biflora H. P. Chandler 1901-1 1415 Humboldt North Coast Ranges, Klamath River 427 Comment
  UC34956  Triodanis biflora Chesnut and Drew 1888-7-9 Humboldt near Campbell's Comment
  HSC20852  Triphysaria eriantha subsp. eriantha S. J. Hawks 1965-5-14 56 Humboldt 1 mi. W of Mckinleyville, past the end of Murray Rd. Comment
  HSC33758  Triphysaria eriantha subsp. eriantha A. Montalvo 1975-5-24 275 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC103298  Triphysaria pusilla Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3009 Humboldt Six Rivers National Forest; ~ 0.3 mi. south-southeast of Cold Spring Camp; ~ 3.3 aerial mi. south-southeast of Horse Mtn. Radio Tower. 1386 Comment
  HSC40372  Triphysaria pusilla Linda M. Barker 1976-4-30 1425 Humboldt 3 mi. W of Arcata Comment
  HSC70581  Triphysaria pusilla Sue Sweet 1981-4-30 549 Humboldt Lanphere-Christensen Dunes Preserve, along trail N of weather station Comment
  HSC38336  Triphysaria versicolor subsp. faucibarbata Peter Sorensen 1976-7-11 Humboldt King Salmon Comment
  JEPS72932  Trisetum canescens Lincoln Constance 1934-5-23 612 a Humboldt se slope of mountain above Look Prairie 365 Comment
  SEINET200925 Image available Trisetum canescens Joseph P. Tracy 1935-7-30 14359 Humboldt Salmon Summit. 1768 Comment
  SEINET201038 Image available Trisetum canescens Joseph P. Tracy 1901-6-23 1167 Humboldt Immediate vicinity of Eureka. 0 Comment
  UC1133275  Trisetum canescens H. S. Yates 1936-6-17 5704 Humboldt lower nw slope Buck Mountain; South Fork Peak Quad. 792 Comment
  UC212882  Trisetum canescens Joseph P. Tracy 1919-5-31 5157 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  UCD93635  Trisetum canescens R. Tofsrud 1947-7-1 199 Humboldt North of Harris. Comment
  HSC13417  Trisetum cernuum D. J. Wilder 1965-5-15 35 Humboldt 2 mi. E of Freshwater on Road to Kneeland Comment
  UC1541533  Trisetum cernuum Harold E. Parks 1934-5-16 4935 Humboldt Carlotta; near station 15 Comment
  UC1714630  Trisetum cernuum Joseph P. Tracy 1926-6-13 7599 Humboldt near Blue Lake (Liscom Hill Road); North Coast Ranges 152 Comment
  HSC98366  Triteleia bridgesii T. Jimerson, J. Pageau 1979-5-24 472 Humboldt Near Orleans 226 Comment
  SJSU911  Triteleia bridgesii J. W. Tilden 1946-6-20 1018 Humboldt Bluff Creek c. 1.5 mi above junction with Klamath River Comment
  HSC3041  Triteleia hyacinthina Frances Oldridge 1946-1 Humboldt Kneeland Comment
  SD52191  Triteleia hyacinthina Frank Stephens 1894-5-14 10295 Humboldt Eel River. 320 Comment
  UC15023  Triteleia hyacinthina Harley P. Chandler May 1901 1246 Humboldt Redwood Belt North Coast Ranges 152 Comment
  HSC68611  Triteleia laxa Jacqueline Greenleaf 1980-7-16 240 Humboldt Near Buck Mountain. 1250 Comment
  CAS-BOT-BC526356  Triteleia laxa Doris K. Kildale 1925-6-28 791 Humboldt Kneeland Prairie, bald hills 762 Comment
  HSC35868  Triteleia laxa Thomas W. Nelson, James Nelson 1975-8-5 2126 Humboldt Beside rd. to Table Bluff 1.0 mi. W of Copenhagen Rd. Comment
  RSA183022  Triteleia laxa Lee W. Lenz 1966-5-24 24657 Humboldt W of Berry Summit, US 299. Comment
  RSA89626  Tsuga heterophylla E. K. Balls, P. C. Everett 1953-10-13 18654 Humboldt 11.3 mi to 16.6 mi E of jct. w/ Hwy 101 on Hwy 299 above Blue Lake. 244 Comment
  UCR6818  Tsuga heterophylla David Whistler, H. M. Whistler 1964-8-1 640801- 2 Humboldt Coast Range, US Hwy 299, 6 mi east of Blue Lake Comment
  CAS-BOT-BC73932  Turritis glabra Doris K. Kildale 1926-4-30 1949 Humboldt Fruitland Hill - Harris Road divided between north and south forks of Eel River. Comment
  HSC63002  Typha latifolia David Wheeler 1979-5-29 145 Humboldt S end of H St., Arcata. Comment
  HSC95838  Umbellularia californica Kevin Thomas 2004-4-26 13 Humboldt Lord Ellis Summit along Titlow Hill Rd., rd. turnout Comment
  RSA173982  Umbellularia californica R. F. Thorne 1957-9-2 19001 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC915720  Umbellularia californica W. L. Jepson 1903-6-13 36 Humboldt Briceland Comment
  POM380627  Urtica dioica subsp. gracilis Lyman D. Benson 1929-7-12 1792 Humboldt Weott Ranger Station; S Fork Eel River. Comment
  UC229829  Urtica urens Joseph P. Tracy 1922-7-16 6103 Humboldt Northern Coast Ranges, at Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC62985  Utricularia macrorhiza David Wheeler 1979-4-21 75 Humboldt Fieldbrook Elementary School, pond to the W of the baseball fields. Comment
  HSC12435  Vaccinium ovatum Gary J. Stebbins 1970-2-21 10 Humboldt Patricks Point State Park 38 Comment
  HSC26397  Vaccinium ovatum T. O. Osborne 1970-9-16 31 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC7917  Vaccinium ovatum D. E. Anderson 1961-9-23 1832 Humboldt 2.3 mi. S of Kneeland corner Comment
  HSC91895  Vaccinium ovatum E. Mackey 1986-10-7 Humboldt Patricks Point State Park, Palmer's Point Rd. Comment
  UCD118087  Vaccinium ovatum B. L. Kay 1955-6-7 s.n. Humboldt Wagner Ranch, 5 miles southwest Garberville. Comment
  CDA38877  Vaccinium ovatum Gordon Leppig 1998-6-26 854 Humboldt McKinleyville, Rte 101 at Mad River Overlook. Comment
  CAS-BOT-BC199413  Vaccinium parvifolium Carl B. Wolf 1930-10-26 1768 Humboldt Along the Redwood Highway 3 mi. so. of Del Norte Co. line 152 Comment
  HSC66213  Vaccinium parvifolium M. Sacks 1977-5-8 1 Humboldt S end of Patricks Point State Park, ca. 0.2 mi. W of Hwy. 101 and 5 mi. N of Trinidad 61 Comment
  RSA50145  Vaccinium parvifolium E. K. Balls 1949-7-11 13973 Humboldt 35 miles west of Willow Creek on Hwy 299 to Arcata. 152 Comment
  UC1239584  Valeriana sitchensis subsp. scouleri Mrs. R. D. Douglass 1919-5-8 Humboldt near Ferndale; Nothern Coast Region Comment
  HSC56072  Valeriana sitchensis subsp. sitchensis G. L. Clifton, Griswold 1979-7-31 11741 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  JEPS52977  Vancouveria W. L. Jepson 1932-8-9 16541 Humboldt Deerfoot Glade Bull Creek; , Deerfoot Glade Comment
  CAS-BOT-BC76055  Vancouveria hexandra Harley P. Chandler 1901-5-1 1162 Humboldt North Coast Ranges. Humboldt Bay. 30 Comment
  UC1537345  Vancouveria hexandra Gordon H. True Jr. 1936-5-12 470 Humboldt 5 mi s Kneeland; s of Kneeland 457 Comment
  SJSU1032  Vancouveria hexandra A. C. Browne 1950-5-23 Humboldt Weott Comment
  HSC70385  Vancouveria planipetala M. A. Baker 1980-6-7 1860 Humboldt Near Ammon Creek. 732 Comment
  UC146078  Vancouveria planipetala Joseph P. Tracy 1908-6-23 2678 Humboldt near Grizzly Gulch; Northern Coast Ranges, near Grizzly Gulch 152 Comment
  UC1222525  Veratrum californicum var. californicum Joseph P. Tracy 1950-6-25 18878 Humboldt nw slope Buck Mountain; Burr Valley 1066 Comment
  UC302168  Veratrum californicum var. californicum Joseph P. Tracy 1925-7-5 7170 1/2 Humboldt in wet meadow near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC57040  Veratrum insolitum Overton, Butler 1979-7-24 9680 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  JEPS80003  Veratrum insolitum Joseph P. Tracy 1929-7-4 8636 Humboldt French Camp Ridge 1066 Comment
  HSC58115  Veratrum viride G. L. Clifton, Griswold 1979-8-1 12074 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC38435  Verbena lasiostachys J. P. Smith 1976-10-30 9000 Humboldt Mad River, E of Essex Lane exit. Comment
  JEPS39084  Verbena lasiostachys var. lasiostachys Lincoln Constance 1934-5-26 660 Humboldt s end Dyerville Bridge; S Fork Eel River 45 Comment
  HSC53820  Veronica americana Terry Griswold, Marvin Butler 1979-7-10 6261 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC21189  Veronica americana Paul Shields 1955-6-16 Humboldt Humboldt State campus Comment
  SEINET10782119  Veronica americana J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13018 Humboldt North of McKinleyville off U.S. 101 (a few kilometers north of Eureka), Clam Beach County Park. Comment
  UC147891  Veronica peregrina subsp. xalapensis J. P. Tracy 1910-5-22 3136 Humboldt immediate vicinity of Eurika 0 Comment
  UC147877  Veronica scutellata J. P. Tracy 1901-6-30 1196 Humboldt immediate vicinity of Eureka 0 Comment
  UC147901  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1910-4-17 3115 Humboldt Valley of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, Elk River 0 Comment
  HSC38088  Vicia americana var. americana Thomas W. Nelson, James Nelson 1976-5-30 2609 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC56355  Vicia americana var. americana Griswold, Butler 1979-7-10 6327 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC98614  Vicia americana var. americana Cara Witte 2008-7-2 803 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  UC1197465  Vicia americana var. americana Joseph P. Tracy 1911-7-1 3277 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC81921  Vicia gigantea Thomas W. Nelson, Jane P. Nelson 1979-7-3 4966 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC90225  Vicia hirsuta L. Watson, J. Meninga Apr 1991 24 Humboldt Near Manilla, Mad River Slough and Dunes. N end of parking lot, W side of trail. Comment
  HSC48379  Vicia hirsuta Mark Flippo 1978-4-18 38 Humboldt Mckinleyville, Hill Top Rd. Comment
  HSC77964  Vicia sativa subsp. nigra L. P. Janeway, Paul Wilson 1984-5-25 829 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  UCR104583  Vicia sativa subsp. nigra A. R. Alexander 1998-4-9 10 Humboldt US Highway 101 and Giuntoli Lane, near shopping center, Arcata 152 Comment
  UC17027  Vicia sativa subsp. sativa Joseph Burtt Davy and Walter C. Blasdale 1899-5 5548 Humboldt near Scotia Comment
  RSA755058  Vicia villosa Robert F. Thorne, Percy C. Everett 1965-8-8 35254 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  HSC3231  Vinca major W. F. Nickel 1965-5-15 Humboldt On Hwy. at N stoplight in Arcata. Comment
  HSC3232  Vinca major S. J. Hawks 1965-4-6 85 Humboldt Luffenholtz Beach Comment
  CAS-BOT-BC263938  Viola adunca Doris Kildale 1931-5-10 10582 Humboldt Snow Camp Comment
  CAS-BOT-BC263947  Viola adunca L. B. Kildale 1930-5-11 9543 Humboldt Bald Hills near [Tomlinson's?] 792 Comment
  CAS-BOT-BC263951  Viola adunca L. B. Kildale 1926-3-26 1656 Humboldt Dillon Road between Beatrice and Field's Landing Comment
  UC1762356  Viola adunca Milo S. Baker 1926-4 5432 Humboldt Carlotta Comment
  UC1761536  Viola adunca Mrs. Wilder 1926-4 5432 Humboldt Carlotta, Mrs. Wilder's yard Comment
  CHSC63426  Viola cuneata Vernon H. Oswald 1994-6-29 6358 Humboldt Titlow Hill Rd. (Forest Rd. 1) at its intersection with 5N46, 4.6 mi S of Hwy. 299, S of Willow Creek. 1386 Comment
  UC66188  Viola cuneata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5642 Humboldt from Bair's to Hoopa; North Coast Ranges, Hoopa Mountain Comment
  UCSB18722  Viola cuneata Jensen, Karen 1965-4-15 Humboldt 0.2 km. W of U.S. Highway 101, by Miranda turnoff 91 Comment
  UCR138885  Viola glabella E. Bower, S. Marubayashi, E. Perry 1997-5-10 53 Humboldt Titlow Hill Road, 1.5 mi past intersection with Hwy 299 975 Comment
  UC1198457  Viola glabella Joseph P. Tracy 1912-3-31 3562 Humboldt below Fieldbrook (on Lindsay Creek); Northern Coast Ranges, Lindsay Creek 30 Comment
  UCR138879  Viola hallii J. Marshall, J. Savage, L. Allison 1997-5-10 32 Humboldt Humboldt Baseline Meridian: Forest Service Rd. #1, mile marker #8 945 Comment
  UC1198464  Viola lobata subsp. integrifolia Joseph P. Tracy 1935-7-14 14068 Humboldt Back of Clear Lake; North Coast Ranges, Grouse Mountain. 1524 Comment
  RSA66978  Viola ocellata E. K. Balls 1951-5-9 16514 Humboldt ca. 5 miles S of Richardson's Grove, Highway 101. Comment
  RSA77739  Viola purpurea subsp. purpurea Joseph P. Tracy 1930-6-8 8730 Humboldt Kneeland Prairie. 762 Comment
  HSC98569  Viola sheltonii Cara Witte 2008-6-9 691 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1503 Comment
  UCD60331  Vitis californica H. Olmo 1934-9-30 s.n. Humboldt Along highway in Blue Lakes. Comment
Read comments
Jun 14 2012
  HSC79420  Vulpia bromoides Kenneth Clark 1980-4-18 584 Humboldt On western bluffs above Dead Man's Gulch. 137 Comment
  UC1145197  Vulpia microstachys var. ciliata Joseph P. Tracy 1936-7-5 15038 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC184235  Vulpia microstachys var. pauciflora S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3431 Humboldt Northwest slopes of Buck Mountain 822 Comment
  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
  RSA10073  Vulpia microstachys var. pauciflora Joseph P. Tracy 1925-5-17 6985 Humboldt Trinity River Valley, near the South Fork. 183 Comment
  HSC39399  Vulpia myuros D. E. Anderson, J. P. Smith 1971-6-28 - 1253 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  CAS-BOT-BC128814  Whipplea modesta L. R. Abrams 1916-7-11 6016 Humboldt Mouth of Grizzly Creek on Van Duzen River - Redwood Forest Comment
  CAS-BOT-BC128819  Whipplea modesta A. A. Heller 1937-6-8 15894 Humboldt In the forest at Bishop Pine Lodge, 3 miles north of Trinidad Comment
  HSC20441  Whipplea modesta D. E. Anderson 1962-5-1 2197 Humboldt 2 mi. W of Hoopa Comment
  HSC38478  Whipplea modesta D. E. Anderson, J. P. Smith 1971-6-18 1053 Humboldt 1 mi. W of Lord Ellis Summit Comment
  SD51271  Whipplea modesta Darley F. Howe 1961-8-2 3121 Humboldt 7.7 miles east of Orick on Bald Mountain Road. 609 Comment
  UC1198904  Whipplea modesta Joseph P. Tracy 1949-5-8 18294 Humboldt open flat by old Strong's District Schoolhouse (5 mi e of town); Carlotta 60 Comment
  HSC100587  Whipplea modesta Carl C. Marshall Jul 1886 332 Humboldt Mountains. Comment
  SEINET12217528  Whipplea modesta F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -299 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  CAS-BOT-BC77812  Woodwardia fimbriata Doris K. Kildale 1928-12-30 6763 Humboldt Phillipsville Comment
  CAS-BOT-BC382920  Wyethia angustifolia Doris K. Kildale 1928-6-24 5271 Humboldt Horse Mountain 853 Comment
  JEPS90114  Wyethia angustifolia Dean William Taylor May 1972 1069 Humboldt near Arcata Comment
  UC129416  Wyethia angustifolia Harley P. Chandler June 1901 1494 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  SEINET11799538  Wyethia angustifolia L. K. Henry 1971-1 s.n. Humboldt along Rt. 36, E of Dinsmore in Six Rivers National Forest Comment
  UC176305  Wyethia angustifolia Joseph P. Tracy 1913-6-20 4226 Humboldt lower foothills nw slope Buck Mountain; Northern Coast Ranges, nw slope lower foothills Buck Mt 762 Comment
  UC582642  Wyethia angustifolia Joseph P. Tracy 1934-6-14 13217 Humboldt in open forest in serpentine belt Horse Mountain 1432 Comment
  HSC23679  Zeltnera muehlenbergii Tim Baroni 1971-7-5 103 Humboldt 8 mi. E of Petrolia Comment
  HSC12700  Zeltnera muehlenbergii Jana Kattenhorn 1970-10-31 159 Humboldt Scotia Bluffs, N bank of Eel River Comment
  HSC45833  Zeltnera muehlenbergii K. Irwin 1978-8-13 Humboldt Along Seawood Dr., 100 m W of Hwy. 101, N of Trinidad Comment
  HSC99016  Zigadenus micranthus Cara Witte 2007-5-21 66 Humboldt White Oak Opening. 1257 Comment
  UC1198216  Zigadenus micranthus var. micranthus Joseph P. Tracy 1947-6-8 17710 Humboldt open flat by old Strong's District School House (5 mi e of town, Carlotta); Carlotta 60 Comment
  HSC49625  Zostera marina R. York 1979-4-22 248 Humboldt Along bluffs just N of College Cove Comment



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