Search Results — 2000 specimen records retrieved (1362 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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A yellow cell in the column headed "?", for records with coordinates, indicates a discrepancy with respect to range as specified in the eFlora. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC55196  Abies concolor G. L. Clifton, Griswold 1979-8-2 12292 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS47996  Abies magnifica var. magnifica W. L. Jepson 1902-7-16 2043 Humboldt Trinity Summit 2133 Comment
  HSC73071  Abies procera M. A. Baker 1980-7-22 3063 Humboldt Near Salmon Mtn. 1820 Comment
  RSA168959  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Six Rivers National Forest; Horse Trail Ridge, SW slope. 1829 Comment
  HSC16136  Abronia latifolia S. J. Hawks 1965-5-13 55 Humboldt 1 mi. W of McKinleyville, past the end of Murray Rd. Comment
  UCR122367  Abronia latifolia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7022 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  SD120883  Abronia latifolia Roman Gankin 1965-8-6 558 Humboldt Samoa Peninsula, 1.3 miles south of Samoa, west of road Comment
  UC1602146  Abronia latifolia Joseph P. Tracy 1936-6-6 14861 Humboldt Sandy shore near railroad station Eureka 3 Comment
  CDA40634  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile northwest of Fieldbrook. 0 Comment
  CDA40642  Acaena novae-zelandiae G. D. Barbe, E. C. Whitney & Warren Simas 1978-7-26 2416 Humboldt East of Arcata airport between Fieldbrook and Crannell; Vic Guynup property. 0 Comment
  UC902129  Acer glabrum var. glabrum Joseph P. Tracy 1942-6-23 17248 Humboldt 3 mi e Box Camp; Trinity Summit 1584 Comment
  CHSC19499  Acer macrophyllum H. S. Logsdon 1964-5-10 8 Humboldt 4.0 mi. N.E. of Orick at Boye's Prairie. Comment
  HSC2807  Acer macrophyllum Jack Rockwell 1962-4-29 44 Humboldt E bank of Redwood Creek, near Hwy. 299 549 Comment
  HSC37367  Acer macrophyllum Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 501 Humboldt Along Lost Man Creek. 38 Comment
  HSC60002  Acer macrophyllum M. A. Baker 1977-6-6 370 Humboldt Hoopa Comment
  UC179927  Acer macrophyllum Joseph P. Tracy 1914-7-7 4493 Humboldt in valley of North Fork of Elk River Northern Coast Region, Humboldt Bay, North Fork Elk River (region about Humboldt Bay) 0 Comment
  HSC37962  Achillea millefolium Peter Sorensen 1976-6-12 Humboldt Woodley Island Comment
  SBBG65817  Achillea millefolium R. Hartwell 1938-8-6 120 Humboldt near Eureka Comment
  UC581787  Achillea millefolium Joseph P. Tracy 1933-5-20 12230 Humboldt s of point of the cape near ocean shore Cape Mendocino 3 Comment
  HSC100420  Achillea millefolium Carl C. Marshall Jul 1887 437 Humboldt Everywhere. Comment
  UC581788  Achillea millefolium Joseph P. Tracy Jul 16 1930-Jul 19 1930 9043 Humboldt near Blake Lookout; North Coast Ranges, South Fork Mountain 1737 Comment
  HSC81935  Achlys triphylla Thomas W. Nelson, Jane Nelson 1979-7-3 4958 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  CAS-BOT-BC210650  Achnatherum lemmonii Joseph P. Tracy 1927-5-14 8000 Humboldt Trinity River Valley, near the South Fork 182 Comment
  UCD50710  Achnatherum lemmonii G. L. Stebbins Jr.; G. L. Church 1941-5-27 3117 Humboldt 10.3 miles west of Dinsmore's, on road to Bridgeville. Humboldt County. Comment
  UC212861  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1919-9-23 5285 Humboldt summit of ridge Northern Coast Ranges, Trinity Summit 1828 Comment
  CAS-BOT-BC412600  Aconogonon alaskanum Volney Rattan 1883-6-18 s.n. Humboldt Near the summit between Pilot Creek and the Trinity River Comment
  HSC73574  Adenocaulon bicolor Gail Newton 1980-7-14 1511 Humboldt Near Deadman Ridge 1097 Comment
  OBI17136  Adenocaulon bicolor Joseph T. Gregory 1933-8-6 525 Humboldt Woods near Gann's Prairie Rd from Orick to Orleans Comment
  UC249778 Image available Adiantum X tracyi Joseph P. Tracy 1924-9-16 6868 Humboldt <collector's garden> Eureka; Northern Coast Ranges 30 Comment
  HSC79503  Adiantum aleuticum Kenneth Clark 1980-6-14 691 Humboldt Shelter Cove, N fork of Dead Man's Gulch 84 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
  CAS-BOT-BC30384  Ageratina occidentalis Henry M. Pollard 1948-7-28 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC29626  Agoseris grandiflora var. grandiflora LeRoy Abrams 1922-6-25 8237 Humboldt 2 mi S of Fortuna Comment
  UC582758  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1929-7-4 8621 Humboldt French Camp Ridge French Camp Ridge 1066 Comment
  UC1222931  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1950-7-31 19233 Humboldt near Clear Lake; Grouse Mountain 1524 Comment
  UC1222933  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1950-7-31 19224 Humboldt below Friday's Camp; Grouse Mountain 1524 Comment
  HSC82039  Agoseris heterophylla Thomas W. Nelson, James Nelson 1980-6-10 5408 Humboldt Along Swayback Ridge 4-wheel drive road, 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  JEPS79803  Agoseris heterophylla Joseph P. Tracy 1933-5-30 12417 Humboldt (near Garberville) Redway 152 Comment
  UC1222765  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1950-8-4 19258 Humboldt at, (in Bull Creek State Park at head of Canoe Creek) Grasshopper Peak; Canoe Creek, Bull Creek State Park Comment
  UC582744  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1930-6-21 8775 E Humboldt Larrabee Valley; Northern Coast Ranges 701 Comment
  UC1199484  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1927-5-14 8030 C Humboldt at Willow Creek; Trinity River Valley 152 Comment
  UC249842  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6280 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 304 Comment
  HSC32098  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5703 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC32336  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5646 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  RSA249387  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5586 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  UC249861  Agrostis alba Joseph P. Tracy 1924-8-17 6819 Humboldt wet places in woods Northern Coast Ranges, Trinidad 60 Comment
  CDA1703  Agrostis capillaris T. C. Fuller 1962-8-6 9362 Humboldt Highway 299 to Blue Lake, 2.6 miles east of Bald Mtn. Summit Road. 1 mile west of Green Point School. 0 Comment
  UCD51876  Agrostis capillaris var. aristata A. H. Murphy 1947-6-20 s.n. Humboldt Tooby and Prior Ranch, near Blocksburg. Comment
  SEINET200937  Agrostis diegoensis Joseph P. Tracy 1932-7-17 10661 Humboldt Trinity Summit 1524 Comment
  HSC96959  Agrostis exarata H. E. Parks May 1934 1161 Humboldt Trindad. Comment
  RSA10022  Agrostis exarata Joseph P. Tracy 1924-7-13 6731 Humboldt Big Lagoon 6 Comment
  UC1103386  Agrostis exarata Joseph P. Tracy 1934-7-21 13478 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC1145154  Agrostis exarata Joseph P. Tracy 1938-7-11 16050 Humboldt sand dunes near Samoa Humboldt Bay 6 Comment
  UC186901  Agrostis exarata J. P. Tracy 1902-6-20 1754 Humboldt vicinity Eureka 0 Comment
  UC526885  Agrostis exarata Joseph P. Tracy 1933-7-10 12656 Humboldt Trinidad Northern Coast Region 60 Comment
  UC552713  Agrostis exarata Joseph P. Tracy 1935-5-25 13857 1/2 Humboldt Fort Seward 106 Comment
  BLMAR708  Agrostis exarata Jennifer Wheeler 2013-10-25 708 Humboldt Lacks Creek, Upper Round Prairie 731 Comment
  HSC68942  Agrostis hallii Jacqueline Greenleaf 1980-8-5 289 Humboldt Near Dairy Creek. 1158 Comment
  HSC90001  Agrostis hallii Leonel Arguello 1989-8-20 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, alongside N Dune loop trail. Comment
  UC1103526  Agrostis hallii Joseph P. Tracy 1912-7-31 3893 Humboldt nw slope Buck Mountain (Burr Valley); Northern Coast Ranges, nw slope Buck Mountain 1066 Comment
  BLMAR707  Agrostis hallii Jennifer Wheeler 2013-10-25 707 Humboldt Lacks Creek, Upper Round Prairie 731 Comment
  UCD53046  Agrostis microphylla Joseph P. Tracy 1938-7-11 16050 Humboldt near Samoa, on Humboldt Bay. 6 Comment
  CAS-BOT-BC139131  Agrostis oregonensis Joseph P. Tracy 1934-7-13 13392 Humboldt North Coast Ranges. Dows Prairie. 60 Comment
  CAS-BOT-BC139061  Agrostis pallens Joseph P. Tracy 1935-7-28 14335 Humboldt Trinity Summit. Head of Brett Hole. 1828 Comment
  SEINET200838 Image available Agrostis semiverticillata Joseph P. Tracy 1943-5-29 17445 Humboldt Eureka. 30 Comment
  HSC40393  Agrostis stolonifera Thomas W. Nelson, James Nelson 1976-7-28 3046 Humboldt W of Alder Springs along 2S08 1555 Comment
  SEINET11683259  Agrostis stolonifera K. S. Erdman 1970-1 4773 Humboldt Counts Hill prairie on Bald Hills Rd, SE of Orick 853 Comment
  UCD53476  Agrostis stolonifera var. maritima P. B. Kennedy 1925-8-29 s.n. Humboldt Eureka. Comment
  BLMAR32  Aira caryophyllea Brad Barr June, 1982 32 Humboldt King range, Lake Ridge near pond Comment
  RSA183573  Aira praecox R. I. Bonn 1965-5-7 22 Humboldt Four miles west of Arcata on Lamphere Rd. Comment
  HSC12537  Allium acuminatum J. Allen DeCOU 1899-6-21 258 Humboldt Supply Creek Comment
  UC13826  Allium acuminatum Harley P. Chandler June, 1901 1349 Humboldt Hupa Indian Reservation Morth Coast Ranges, Hupa Indian Reservation 152 Comment
  POM228735  Allium amplectens C. C. Harris, S. K. Harris 1936-6-24 645 Humboldt At point where the road from Bridgeville to Dunsmore crosses the Little Van Duzen River. 710 Comment
  HSC39430  Allium campanulatum Thomas W. Nelson, Jane P. Nelson 1976-6-22 2872 Humboldt Area at Goat Hill. 1666 Comment
  CAS-BOT-BC464487  Allium campanulatum Joseph P. Tracy 1932-7-12 10479 Humboldt Trinity Summit, Head of Brett Hole 1828 Comment
  SEINET3153890  Allium campanulatum N. Dennis 1965-6-19 132 Humboldt about 1/4 mi S and 1 mi E of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 mi SE of Kneeland 792 Comment
  HSC36505  Allium falcifolium Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1886 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC73850  Allium falcifolium M. A. Baker 1980-6-8 1924 Humboldt Near Buck Flat 1554 Comment
  UC1198200  Allium falcifolium Joseph P. Tracy 1933-7-25 12892 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC469016  Allium falcifolium Thomas W. Nelson; James L. Nelson 1980-6-10 5400 Humboldt Blocksburg Quad.; Along Swayback Ridge 4-wheel drive road 1.25 miles south of junction with Forest Service road. Comment
  HSC32124  Allium hoffmanii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5588 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC15004  Allium membranaceum Mrs. M. H. Manning 1901-7-14 3 Humboldt trail below Mud Springs; Hupa Comment
  UCR32184  Allium siskiyouense David J. Keil 1983-7-2 17327 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  HSC104412  Allium unifolium Adam N. Canter 2017-4-20 6 Humboldt BLM, Lost Coast Headland, Guthrie Creek 60 Comment
  UCD138614  Allium unifolium K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 457 Comment
  UC1222284  Alnus incana subsp. tenuifolia Joseph P. Tracy 1950-8-8 19286 Humboldt Croghan Hole Trinity Summit 1676 Comment
  HSC96512  Alnus rubra Gordon Leppig 1999-7-9 1179 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  HSC99634  Alnus rubra Will Ferrand 2002-4-27 28 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  UCD110034  Alnus rubra Linda M. Barker 1976-6-14 1602 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC57668  Alnus viridis subsp. sinuata G. L. Clifton, Griswold 1979-7-25 10853 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC58073  Alnus viridis subsp. sinuata G. L. Clifton, Griswold 1979-8-1 11965 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  POM89806  Alnus viridis subsp. sinuata Joseph P. Tracy 1919-9-18 5241 Humboldt Trinity Summit. Comment
  UC1145046  Alopecurus aequalis Joseph P. Tracy 1950-7-6 19019 Humboldt 3 mi. s. Burr Valley (Buck Mt., high meadow w. side,); Buck Mt. 1158 Comment
  UC1103314  Alopecurus geniculatus Joseph P. Tracy 1938-8-20 16139 Humboldt Alton 30 Comment
  UCD55896  Alopecurus geniculatus Joseph P. Tracy 1917-6-17 4816 Humboldt in Salmon Creek Valley, at south end of Humboldt Bay. 15 Comment
  UCD55904  Alopecurus geniculatus Joseph P. Tracy 1938-7-15 16063 Humboldt mouth of Elk River, near Eureka. 6 Comment
  UC677555  Alopecurus saccatus A. A. Beetle with Stebbins and Tracy May 1942 3464 Humboldt 1 mi. e. Alton Comment
  CAS-BOT-BC13671  Ambrosia artemisiifolia H. M. Pollard 1947-8-27 s.n. Humboldt Near Orleans Comment
  HSC5662  Ambrosia chamissonis David Adams Oct 1960 Humboldt N bank of the Mad River near mouth 0 Comment
  UCR122369  Ambrosia chamissonis George K. Helmkamp, E. A. Helmkamp 2001-7-8 7020 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  CAS-BOT-BC13699  Ambrosia chamissonis Kenneth Clark 1981-5-24 1396 Humboldt Shelter Cove, 100 yards west of Dead Man's Gulch. Point Delgada quad. 3 Comment
  HSC56196  Amelanchier pallida Gilbert Muth 1979-8-1 12140 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CDA1717  Ammophila arenaria T. C. Fuller 1961-9-28 7062 Humboldt 0.2 miles south of Samoa. 0 Comment
  CDA18243  Ammophila arenaria G. D. Barbe, T. C. Fuller 1974-6-19 1881 Humboldt North Coast Ranges; Mad River mouth, beach S of river, at end of Iversen Lane, Tyee City. 7 Comment
  CHSC2118  Ammophila arenaria M. Anthony 1960-5-14 Humboldt Near Arcata. Comment
  HSC8843  Ammophila arenaria Paul Shields 1955-9-22 Humboldt 12 mi. NW Arcata Comment
  UC584207  Ammophila arenaria David D. Keck and J. Clausen 1935-6-16 3387 Humboldt Mouth of Little River Little River Comment
  UC494005  Amsinckia H. E. Parks, J. P. Tracy 1930-5-25 881 Humboldt near Bridgeville Comment
  UC1191691  Anagallis arvensis Malcolm A. Nobs and S. Galen Smith 1949-8-11 1342 Humboldt e. shore Stone Lagoon Comment
  CAS-BOT-BC45135  Anaphalis margaritacea Doris K. Kildale 1925-7-2 899 Humboldt Table Bluff Comment
  RSA15556  Anaphalis margaritacea C. B. Wolf 1927-8-30 1230 Humboldt 2 miles S of Petrolia on the Matole River near point where the road crosses the river. Comment
  UCD128833  Anaphalis margaritacea Linda M. Barker 1976-8-2 1671 Humboldt 3 miles west of Arcata. Comment
  SEINET11855259  Anaphalis margaritacea Unknown 1933-1 Humboldt Eureka Comment
  SEINET8734419 Image available Anaphalis margaritacea H. E. Parks, S. T. Parks 1943-1 24237 Humboldt Stone Lagoon Comment
  UCSC000820  Anaphalis margaritacea H. L. Person 1932-7-16 s.n. Humboldt Highway N. of Trinidad Trinidad - Rock Point Comment
  JEPS86125  Anemone deltoidea Wayne Roderick 1966-5-7 Humboldt ca. 5 mi. e. Carlotta Comment
  HSC100610  Anemone nemorosa Carl C. Marshall Jun 1885 30 Humboldt Redwoods (high up). Comment
  UC1196196  Anemone oregana Joseph P. Tracy 1938-6-13 15899 Humboldt Horse Mtn; in serpentine belt 1432 Comment
  HSC33062  Anemone oregana var. oregana Thomas W. Nelson, Jane Cole, Brad Klipfel 1974-5-8 1250 Humboldt Horse Mtn. area, W of microwave tower 1220 Comment
  HSC36598  Angelica hendersonii Linda Barker, J. O. Sawyer, Thomas W. Nelson 1975-9-4 1308 Humboldt Megwill Point on Elk Head, N of Trinidad, in Trinidad State Beach 15 Comment
  RSA21584  Angelica hendersonii C. B. Wolf 1937-9-9 9304 Humboldt 2 miles S of Cape Mendocino. 6 Comment
  UC582636  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  SEINET3472178  Angelica hendersonii Unknown 1956-8-29 1967 Humboldt North of Eureka, North of Eureka, near Orick Comment
  HSC70683  Angelica tomentosa T. A. Ranker Jul 1980 131 Humboldt Along Hwy 36, 36.7 mi E of junction with Hwy 101 Comment
  HSC98637  Angelica tomentosa Cara Witte 2007-7-25 578 Humboldt Forest Service Road 5N10. Approximately 1/2 mile from intersection with Forest Service Road 5N41. 1283 Comment
  SD42569  Angelica tomentosa var. hendersonii Carl B. Wolf 1937-8-11 2910 Humboldt 1/2 mile east of Alton 17 Comment
  HSC76418  Anisocarpus madioides Denis Kearns 1981-7-8 161 Humboldt Near Bluff Creek 622 Comment
  HSC58109  Antennaria media G. L. Clifton, Griswold 1979-8-1 12044 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC41291  Antennaria suffrutescens Brad Klipfel 1974-7-27 489 Humboldt Horse Mtn. Comment
  HSC97641  Antennaria suffrutescens Cara Witte 2007-6-12 242 Humboldt Horse Mountain Botanical Area. Near mine area. Forest Service Road 6N38. 1311 Comment
  UC1222875  Antennaria suffrutescens Joseph P. Tracy 1946-5-4 17528 Humboldt along Trinity Highway; Willow Creek Canyon Comment
  HSC12590  Anthemis cotula C. Kline 1970-10-28 53 Humboldt North Bank Rd., 3 mi. W of Blue Lake, Mad River gravel bottoms Comment
  HSC38792  Anthemis cotula J. D. Ackerman 1975-8-31 655 Humboldt Lanphere Rd. near Mad River Slough, Arcata Bottoms 2 Comment
  HSC38313  Anthoxanthum odoratum Peter Sorensen 1976-6-2 Humboldt North Spit Comment
  HSC40341  Anthoxanthum odoratum Linda M. Barker 1976-4-30 1402 Humboldt 3 mi. W of Arcata Comment
  HSC37848  Anthriscus caucalis Peter Sorensen 1976-6-2 Humboldt Humboldt Bay, Woodley Island Comment
  JEPS83355  Antirrhinum vexillocalyculatum subsp. breweri David M. Thompson 1983-6-30 359 Humboldt 0.9 mi from Hwy. 299 in Willow Creek (2.7 mi from start of Patterson Rd (at end of River Rd), FS Rd 10N02 (to Waterman Ridge and Horse Linto Creek), 0.8 mi n of jct with Sunset Pl); Willow Creek, Willow Creek Quad. (15', 1952) 213 Comment
  JEPS5352  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1935-10-13 14756 Humboldt Willow Creek; Trinity River Valley 152 Comment
  RSA43833  Antirrhinum vexillocalyculatum subsp. breweri H. M. Pollard 1947-8-28 s.n. Humboldt NE Perch Creek, Oreleans region. Comment
  UC1198740  Aphanes occidentalis Joseph P. Tracy 1918-4-12 4876 Humboldt near Fish's Mill Creek (Dows Prairie); Northern Coast Ranges 30 Comment
  JEPS49817  Apocynum cannabinum Joseph P. Tracy 1932-6-14 10148 Humboldt Trinity R. Valley, at Willow Creek Trinity R. Valley, Willow Creek 152 Comment
  HSC58087  Arabis divaricarpa var. interposita G. L. Clifton, Griswold 1979-8-1 11996 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC57337  Arabis glabra Walter Overton, Butler 1979-7-26 10004 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1341 Comment
  UC1198312  Arabis glabra Joseph P. Tracy 1947-7-5 17815 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC162637  Arabis glabra Harley P. Chandler Jun 1901 1337 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UC1198307  Arabis glabra Joseph P. Tracy 1911-7-12 3522 Humboldt along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  HSC98619  Arabis glabra var. glabra Cara Witte 2007-5-31 154 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  HSC98804  Arabis subpinnatifida Cara Witte 2008-6-2 672 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1373 Comment
  HSC3249  Aralia californica H. D. Sumner 1959-7-14 Humboldt Between Hoopa and Redwood Creek 305 Comment
  CAS-BOT-BC167257  Aralia californica Paul F. Covel 1939-8-7 1638 Humboldt Mather Memorial Grove Comment
  CAS-BOT-BC167260  Aralia californica Volney Rattan 1882-1-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC128693  Arbutus menziesii Carl D. Duncan 1920-9-22 313 Humboldt Common in the vicinity of Hoopa Comment
  CAS-BOT-BC128695  Arbutus menziesii Doris K. Kildale 1927-5-7 3109 Humboldt Elk Ridge near Eel Rock Comment
  HSC7599  Arbutus menziesii Francis Winter 1960-4-24 Humboldt 4 mi. E of Blue Lake, Hwy. 299 305 Comment
  HSC98739  Arbutus menziesii Cara Witte 2008-5-26 661 Humboldt Along Forest Service Road 5N10. 1/2 mile south of intersection with Friday Ridge Road. 1487 Comment
  UC1196876  Arctostaphylos Joseph P. Tracy 1934-3-11 13157 Humboldt French Camp Ridge 1066 Comment
  UC1198678  Arctostaphylos Joseph P. Tracy 1933-4-9 10970 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC585939  Arctostaphylos Joseph P. Tracy 1934-3-11 13160 Humboldt French Camp Ridge 1066 Comment
  UC585953  Arctostaphylos Joseph P. Tracy 1932-7-18 10722 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  UC1225932  Arctostaphylos X media Joseph P. Tracy 1945-3-30 17501 Humboldt Eureka 45 Comment
  UCD50559  Arctostaphylos canescens Roman Gankin 1965-8-4 540 Humboldt On USAL Road, 23 miles north of junction with State Route 1 and 2.7 miles south of junction of Four Corners. Comment
Read comments
Jul 8 2015
  CAS-BOT-BC23756  Arctostaphylos columbiana Alice Eastwood 1907-4-21 12 Humboldt Trinidad Comment
  CAS-BOT-BC23759  Arctostaphylos columbiana Alice Eastwood 1907-4-22 41 Humboldt Near Trinidad Comment
  CAS-BOT-BC23764  Arctostaphylos columbiana J. E. Adams 1935-5-12 1048 Humboldt Patrick's Point Comment
  CAS-BOT-BC23794  Arctostaphylos columbiana C. Hart Merriam 1920-9-18 s.n. Humboldt Berry Mt. between Trinity River and Redwood Creek Comment
  CAS-BOT-BC23825  Arctostaphylos columbiana Doris K. Kildale 1927-3-25 3011 Humboldt Humboldt Hill Comment
  JEPS38969  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15171 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC582665  Arctostaphylos columbiana Joseph P. Tracy 1937-7-17 15439 Humboldt Eureka 45 Comment
  UC585918  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13152 Humboldt French Camp Ridge 1066 Comment
  UC718025  Arctostaphylos columbiana Carl B. Wolf 1934-6-30 5844 Humboldt 5 1/2 mi from Shelter Cove (on road to Briceland) 152 Comment
  CAS-BOT-BC23735  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of the Van Duzen River. Comment
  RSA70902  Arctostaphylos columbiana var. tracyi H. E. Parks 1931-3-25 0917 Humboldt Near Patrick's point. Comment
  RSA600893  Arctostaphylos glandulosa subsp. glandulosa L. C. Wheeler 1959-8-1 7621 Humboldt Queens Peak Mine. Comment
  UC1193023  Arctostaphylos glandulosa subsp. glandulosa R. E. Nelson 1950-7-26 146 Humboldt 1/2 mi nw Neafus Peak; Quad. 29D1 762 Comment
  HSC35598  Arctostaphylos knightii Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2013 Humboldt French Camp, Bald Hills. Comment
  RSA632810  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27777 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  CAS-BOT-BC38835  Arctostaphylos manzanita subsp. manzanita P. C. Everett; E. K. Balls 1959-10-24 23954 Humboldt 6.8 mi. SW from Siskiyou-Humboldt Co. line, somesbar to Orleans. 152 Comment
  HSC102094  Arctostaphylos nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 997 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC55162  Arctostaphylos nevadensis Gilbert Muth 1979-8-1 12136 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UCD52684  Arctostaphylos nevadensis Joseph P. Tracy 1939-8-16 16405 Humboldt Horse Mountain. 1432 Comment
  CAS-BOT-BC40067  Arctostaphylos nevadensis subsp. knightii Walter Knight; Irja Knight 1988-9-5 6360 Humboldt 21 miles up Bald Hill road from US-101 en route to Hoopa. 975 Comment
  HSC35782  Arctostaphylos patula Thomas W. Nelson, B. Reinhardt 1975-7-30 2097 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  HSC7699  Arctostaphylos patula J. Pursell 1964-11-1 11112 Humboldt Near Orleans, intersection of Hwy. 96 and Eyesee Rd. Comment
  UC585903  Arctostaphylos patula Joseph P. Tracy Jul 16 1930-Jul 19 1930 9055 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  RSA636928  Arctostaphylos uva-ursi Jon E. Keeley, J. O. Sawyer 1996-10-11 27665 Humboldt Landfill Christensen Nature Conservancy Reserve, Arcata. 25 Comment
  SBBG83935  Arctostaphylos uva-ursi R. Gankin, W. R. Hildreth 1967-10-24 1147 Humboldt 1.7 mi S of Samoa, on Humboldt Peninsula Comment
  UC673124  Arctostaphylos uva-ursi Joseph P. Tracy 1940-10-3 16740 Humboldt near Samoa; Humboldt Bay 6 Comment
  RSA286310  Arctostaphylos uva-ursi var. coactilis R. F. Thorne 1974-7-29 45082 Humboldt Samoa Dunes. Comment
  HSC76328  Arctostaphylos viscida Denis Kearns 1981-7-6 52 Humboldt Near Mosquito Lake 1122 Comment
  UCR84858  Arctotheca calendula G. D. Barbe 1988-7-18 4293 Humboldt Ferndale: Larry Pries Dairy, 3.4 mi. west of Main St, on Centerville Beach Road Comment
  UC1115829  Arenaria serpyllifolia subsp. serpyllifolia Joseph P. Tracy 1939-4-29 16243 Humboldt at mouth of State Creek Klamath River, State Creek 121 Comment
  BLMAR64  Armeria maritima subsp. californica Jennifer Anthony-Wheeler 1994-5-18 64 Humboldt Samoa/manilla dunes, growing in clumps around annual grasses 6 Comment
  HSC100712  Arnica amplexicaulis Carl C. Marshall Jun 1886 273 Humboldt Trail E of Hoopa. Comment
  HSC40999  Arnica discoidea J. O. Sawyer 1975-10-17 2709 Humboldt Along Big Hill Rd. 915 Comment
  CAS-BOT-BC82432  Arnica discoidea Doris K. Kildale 1926-6-27 2190 a Humboldt McClellan Mountain, Sweasey Lake road 822 Comment
  JEPS35862  Arnica discoidea Lincoln Constance 1934-6-19 910 Humboldt s of, near summit of Grasshopper Mtn Bull Creek Flat; South Fork of the Eel River, Grasshopper Mtn. 914 Comment
  UC166070  Arnica discoidea Joseph P. Tracy 1911-7-11 3513 Humboldt hills near Supply Creek; Hoopa Valley 182 Comment
  HSC58599  Arnica parryi G. L. Clifton, Griswold 1979-7-25 10764 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1103325  Arrhenatherum elatius Joseph P. Tracy 1927-9-25 8369 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  JEPS36982  Artemisia douglasiana W. L. Jepson 1936-8-12 17886 Humboldt Philipsville South Fork Eel River, Philipsville Comment
  RSA24049  Artemisia pycnocephala C. B. Wolf 1940-11-10 9782 Humboldt Coast south of mendocino- 1.8 mi. N of where road turns inland to Petrolia. 8 Comment
  SD56775  Artemisia suksdorfii Darley F. Howe 1963-7-8 3620 Humboldt 2.5 miles west of Bridgeville on Cal. 36. 149 Comment
  SEINET201066  Artemisia suksdorfii Joseph P. Tracy 1934-7-13 13382 Humboldt Coastal bluffs 3 Comment
  HSC57024  Asarum caudatum Overton, Butler 1979-7-24 9641 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC91597  Asarum caudatum E. Mackey 1987-3-1 Humboldt Patrick's Point State Park Comment
  SEINET8714984 Image available Asarum caudatum Unknown 1936-1 s.n. Humboldt Redwood forest on Yager Road from Carlotta, elevation about 1500 feet, Humboldt County, California. 457 Comment
  UC162718  Asclepias cordifolia Joseph P. Tracy 1911-7-9 3477 Humboldt near Willow Creek (hill slopes at w side of river); Northern Coast Ranges, Trinity River 182 Comment
  JEPS49948  Asclepias fascicularis Mary H. Manning 1900-1 Humboldt near Hupa Comment
  CAS-BOT-BC65941  Aspidotis densa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  UC1541684  Aspidotis densa H. E. Parks and J. P. Tracy 1930-9-15 763 Humboldt Kneeland; Bald Hills Comment
  CAS-BOT-BC193135  Astragalus rattanii var. rattanii Doris K. Kildale 1926-7-11 2350 Humboldt Bear River at Capetown Comment
  HSC58324  Asyneuma prenanthoides Overton, Butler 1979-8-2 12621 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC76227  Asyneuma prenanthoides Overton, Butler 1979-7-24 9772 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  POM182459  Athyrium filix-femina subsp. cyclosorum Joseph P. Tracy 1912-7-25 3814 Humboldt Along Black Creek, Kneeland Prairie 762 Comment
  HSC91598  Athyrium filix-femina var. cyclosorum E. Mackey 1986-10-2 Humboldt Patrick's Point State Park by trail to Agate Beach Comment
  HSC6517  Athysanus pusillus D. E. Anderson 1963-5-19 2470 Humboldt Kneeland Area Comment
  HSC66402  Atriplex leucophylla Ruby Van Deventer 1962-5-26 Humboldt Beach at Big Lagoon. 11 Comment
  HSC102945  Avena barbata J. P. Smith 2009-5-30 12598 Humboldt Arcata. Near intersection of Valley West and Giuntoli Road Comment
  HSC9031  Avena barbata Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  UCD56463  Avena sativa Joseph P. Tracy 1951-5-26 19511 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC98769  Baccharis douglasii L. R. Abrams 1927-8-31 12058 Humboldt Marshes along highway between Eureka and Arcata Comment
  CAS-BOT-BC98771  Baccharis douglasii Carl B. Wolf 1927-8-30 1239 Humboldt Minor's Ranch, Union Matole, 6 mi. so. of Petrolia Comment
  CHSC26753  Baccharis douglasii M. S. Taylor 1977-7-5 1428 Humboldt Around bridge over Eel River at the turnoff from Hwy 101 to Ferndale, in Fernbridge. Comment
  HSC39984  Baccharis pilularis subsp. consanguinea Linda M. Barker 1976-9-3 1691 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  RSA167192  Balsamorhiza deltoidea Joseph P. Tracy 1950-6-15 18792 Humboldt Mail Ridge, north of Harris 7 miles Comment
  CAS-BOT-BC106353  Bellis perennis Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  JEPS25618  Bellis perennis Rimo Bacigalupi 1959-7-7 7251 Humboldt immediately behind bluff headland of Cape Mendocino Cape Mendocino 30 Comment
  HSC5192  Bellis perennis D. E. Anderson 1961-8-11 1729 Humboldt East of Humboldt State College campus Comment
  HSC35612  Berberis nervosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2024 Humboldt Just E of Redwood National Park along Bald Hills Rd. Comment
  HSC59564  Berberis nervosa Rick Lundquist 1979-4-22 27 Humboldt 8.4 mi. up Fickle Hill Rd. from 11th St. across from HSU observatory 610 Comment
  HSC74649  Berberis nervosa M. A. Baker 1980-5-17 1207 Humboldt Near Le Perron Peak 792 Comment
  HSC103115  Berberis repens M. Mesler 2010-9-4 841 Humboldt Along trail E603 (Salmon Summit traihead to Red Cap Lake), about 100 m SE of Baylor Camp. 1677 Comment
  CAS-BOT-BC66268  Blechnum spicant L. B. Kildale 1931-8-23 s.n. Humboldt Snow Camp 1219 Comment
  CAS-BOT-BC66272  Blechnum spicant W. C. Blasdale 1896-6-1 s.n. Humboldt Eureka Comment
  POM118334  Blechnum spicant Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC1063690  Blechnum spicant H. L. Person 1932-7-19 Humboldt Dolbier Carson Land Lindsay Creek; Eureka Quadrangle Comment
  RSA182022  Boisduvalia densiflora var. densiflora Joseph P. Tracy 1918-7-5 5020 Humboldt White Thorn Valley. 305 Comment
  POM256472  Boisduvalia glabella Joseph P. Tracy 1938-7-5 16009 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town. 46 Comment
  HSC70782  Boschniakia strobilacea Gail Newton 1980-7-24 1768 Humboldt Near Somes Mtn. 1615 Comment
  CAS-BOT-BC420253  Boykinia occidentalis Roxana S. Ferris 1937-8-21 9390 Humboldt cliff above beach, Shelter Cove Comment
  CAS-BOT-BC420255  Boykinia occidentalis John Thomas Howell 1931-6-17 6722 Humboldt 18 miles n. of Arcata on Redwood Highway Comment
  UC11310  Boykinia occidentalis H. N. Bolander June 1867 6529 Humboldt Comment
  UCSB23762  Boykinia occidentalis Breedlove, Dennis 1962-6-8 Humboldt Along U.S. Highway 101; 8 miles north of Orick; 60 Comment
  JEPS18641  Brickellia californica Joseph P. Tracy 1931-10-18 9736 Humboldt 2 to 5 mi e of the South Fork, along Eel River South Fork Eel River (Camp Grant); Eel River 45 Comment
  JEPS18754  Brickellia greenei Joseph P. Tracy 1935-7-30 14361 Humboldt Salmon Summit 1767 Comment
  CHSC31284  Briza maxima Mark Stopher 1980-5-16 68 Humboldt Along Hwy 101 near jct with Elk River, s of Eureka. Comment
  CAS-BOT-BC145568  Briza minor Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  HSC45594  Briza minor Diane L. Reed 1978-5-7 60 Humboldt 2 mi. up Friday Ridge Rd. from Hwy. 299 Comment
  UC1103278  Bromus carinatus var. carinatus Joseph P. Tracy 1942-6-2 17098 Humboldt 2 mi n of Bridgeville 609 Comment
  UC526863  Bromus carinatus var. carinatus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9047 Humboldt near Blake Lookout (Northern Coast Ranges. South Fork Mountain, along summit); Northern Coast Ranges. South Fork Mountain 1737 Comment
  UC526866  Bromus carinatus var. carinatus Joseph P. Tracy 1925-7-5 7162 Humboldt High Prairie on Bald Mountain High Prairie; Northern Coast Ranges, Bald Mountain, High Prairie 1066 Comment
  SEINET200637 Image available Bromus commutatus Joseph P. Tracy 1917-6-24 4824 Humboldt Holmes Flat 61 Comment
  HSC48064  Bromus diandrus Thomas W. Nelson 1978-4-23 3884 Humboldt N of Samoa Comment
  HSC9285  Bromus diandrus R. E. Hafenfeld 1965-5-9 50 Humboldt Junction of County Rd. and Gold Bluff Beach Rd. Comment
  HSC79464  Bromus hordeaceus Kenneth Clark 1980-4-18 610 Humboldt Along access trail to Dead Man's Gulch, above gulch. 137 Comment
  HSC9247  Bromus hordeaceus J. R. Eichelberger 1964-5-13 80 Humboldt 1/4 mi. from U.S. 101 on the N side of the Mad River. Comment
  CAS-BOT-BC162447  Bromus laevipes L. R. Abrams 1918-6-16 7155 Humboldt Willow Creek. Comment
  JEPS85494  Bromus laevipes L. R. Heckard with T. I. Chuang 1968-7-5 1984 Humboldt 4.3 mi n of Harris Road (Mail Ridge Road); Mail Ridge Road Comment
  UC37642  Bromus laevipes Joseph Burtt Davy 1899-6-27 5871 Humboldt Hupa Valley Comment
  RSA152294  Bromus orcuttianus Joseph P. Tracy 1936-5-8 15124 Humboldt Trinity Summit; on Ridge 2 miles east of Grove's Prairie 1463 Comment
  UC552683  Bromus orcuttianus Joseph P. Tracy 1935-7-22 14129 Humboldt Trinity Summit, at Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC97099  Bromus sterilis Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1364 Comment
  UC552678  Bromus sterilis Joseph P. Tracy 1935-6-23 13980 Humboldt Northern Coast Ranges, French Camp Ridge French Camp Ridge; Northern Coast Ranges, French Camp Ridge 1066 Comment
  UC552677  Bromus tectorum Joseph P. Tracy 1935-6-23 13981 Humboldt Northern Coast Ranges, French Camp Ridge French Camp Ridge; Northern Coast Ranges, French Camp Ridge 1066 Comment
  HSC39171  Bromus vulgaris D. E. Anderson, J. P. Smith 1971-6-28 - 1231 Humboldt Along Mad River, 2 mi. S of Blue Lake Comment
  UC176583  Bromus vulgaris J. P. Tracy 1900-5-28 807 Humboldt immediate vicinity of Eureka 0 Comment
  HSC31451  Cacaliopsis nardosmia D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5569 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  HSC95586  Cakile edentula Andrea Pickart 2002-7-8 160 Humboldt N Spit Dunes, Mad River Co. Park, W of parking area 0 Comment
  UC1198281  Cakile edentula Joseph P. Tracy 1948-6-10 18063 Humboldt sand beach w. of town Trinidad 3 Comment
  UC161575  Cakile edentula J. P. Tracy 1901-8-7 1266 Humboldt Ocean Beach at Samoa, opposite Eureka Ocean Beach; Samoa, Ocean Beach Comment
  CHSC32805  Cakile maritima Lora L. Anderson 1981-4-25 2 Humboldt Ca. 500 yds e of ocean, 0.5 mi w of hwy 101, 11.5 mi nw of Arcata, beach. 0 Comment
  HSC12357  Cakile maritima Steve Dorei 1970-10-7 145 Humboldt McKinleyville Comment
  HSC6603  Cakile maritima J. W. Johnson 1961-8-17 1066 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata Comment
  UCD114935  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt Just west of Trinidad and north, across isthmus from Trinidad Bay. Comment
  CAS-BOT-BC36911  Cakile maritima var. maritima Kenneth Clark 1981-5-24 1395 Humboldt Shelter Cove. 300 yards west of Dead Man's gulch. 3 Comment
  RSA647567  Cakile maritima var. maritima William Gilbert 1970-6-3 s.n. Humboldt 101 Hwy, 10 miles S [of] Klamath River. Comment
  RSA550890  Calamagrostis nutkaensis R. F. Thorne, P. Everett 1965-8-7 35191 Humboldt Big Lagoon, south end. 2 Comment
  UC1738929  Calamagrostis stricta subsp. inexpansa Dean W. Taylor 1991-8-15 12276 Humboldt Snow Camp Lake 1310 Comment
  HSC35505  Callitriche heterophylla G. W. Clason 1962-4-25 Humboldt Hwy. 101 between Arcata and Eureka. Comment
  UCR196002  Callitriche heterophylla subsp. bolanderi R. F. Thorne, Percy C. Everett 1965-8-9 35323 Humboldt Northwestern; Outer North Coastal region, Clam Beach County Park, along highway 3 Comment
  HSC56953  Calocedrus decurrens Overton, Butler 1979-7-23 9457 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  HSC58002  Calocedrus decurrens G. L. Clifton, Griswold 1979-7-31 11787 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC535782  Calochortus amabilis Eleanor Armstrong 1934-5-25 Humboldt n of Redway Comment
  UC1368469  Calochortus coeruleus R. K. Gierisch 1969-7-1 3530 Humboldt Grouse Mtn. Six Rivers Forest/Expt. Area 1584 Comment
  UC502923  Caltha biflora Joseph P. Tracy 1932-7-17 10671 Humboldt Ridges east of Corral Prairie, Trinity Summit; Klamath Mountains. 1828 Comment
  HSC99483  Caltha leptosepala K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 142 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
  POM273040  Calycadenia ciliosa H. M. Pollard 1945-8-31 s.n. Humboldt Orleans to Somes Bar, east side of Klamath River. Comment
  RSA54144  Calycadenia ciliosa H. M. Pollard 1946-8-28 s.n. Humboldt Near Summit of Orleans Mt. 1829 Comment
  UC1222961  Calycadenia fremontii Joseph P. Tracy 1948-9-20 18220 Humboldt Hoopa Valley 91 Comment
  RSA54132  Calycadenia truncata subsp. scabrella H. M. Pollard 1946-8-31 s.n. Humboldt Orleans to Somes Bar Comment
  HSC16575  Calypso bulbosa D. E. Anderson 1965-5-15 3683 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  HSC16567  Calypso bulbosa W. R. Rogers 1967-3-19 227 Humboldt Bar W Ranch, 1 mi. W of Bridgeville Comment
  HSC65839  Calyptridium monospermum Gail Newton 1980-6-16 173 Humboldt Near Monks Camp. 1097 Comment
  RSA394825  Calystegia soldanella E. A. Purer 1932-7-27 4140 Humboldt Samoa Comment
  HSC16446  Camissonia cheiranthifolia L. H. Myers 1963-5-13 18 Humboldt W of Lanpheres Rd., Mad River slough area Comment
  NY679571  Camissonia cheiranthifolia F. W. Hunnewell 1925-7-21 9739 Humboldt Clam Beach N of Eureka. Comment
  UC35372  Camissoniopsis cheiranthifolia subsp. cheiranthifolia W. C. Blasdale 1896-6-3 Humboldt W. Eureka Comment
  SEINET10462871  Campanula prenanthoides Chandler 1901-6-14 CHANDLER 1476 Humboldt KLAMATH RIVER, ORLEANS TO SOMES BAR 1000 Comment
  SEINET10462991  Campanula prenanthoides Tracy 1933-7-26 TRACY 12927 Humboldt Grouse Creek Basin, in open woods 762 Comment
  HSC34270  Campanula scouleri K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  SEINET10463516  Campanula scouleri Overton 1979-7-23 OVERTON 9497 Humboldt NR TITLOW HILL, WILLOW CR. QUAD., NR WILLOW CR. EVERGREEN CONIFER FOREST, SEEPAGE 1280 Comment
  SEINET10463519  Campanula scouleri Nelson 1975-7-15 NELSON 2031 Humboldt FRENCH CAMP, BALD HILLS SERPENTINE OUTCROP. T9N R3E SEC. 28 Comment
  RSA302679  Cardamine angulata J. R. Shevock 1972-3-26 1467 Humboldt Hwy 299. 366 Comment
  JEPS53314  Cardamine breweri Joseph P. Tracy 1918-4-28 4891 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  HSC59654  Cardamine californica Michael Dalke 1979-4-21 57 Humboldt Lord Ellis Summit area, 1 mi. S of Hwy. 299 640 Comment
  UC183543  Cardamine californica Joseph P. Tracy 1913-3-9 4016 Humboldt near Hydesville; Northern Coast Region, near Hydesville 60 Comment
  SEINET11196228  Cardamine californica L. E. Detling 1935-4-20 1643 Humboldt Redwood Flat, 1 mile N of Dyerville. Comment
  POM311254  Cardamine californica var. integrifolia Keith C. Hughes 1961-2-3 326 Humboldt Richardson Grove State Park; Mt. Range: Coast Ranges; Drainage Area: Pacific Slope. 137 Comment
  RSA176497  Cardamine californica var. integrifolia Doris K. Kildale 1927-1-23 2974 Humboldt Van Duzen River at the Blue Shale. Comment
  UC249682  Cardamine californica var. sinuata Joseph P. Tracy 1921-3-20 5426 Humboldt 12 mi e Hydesville (Van Duzen River at Blue Slide); Northern Coast Ranges, Van Duzen River at Blue Slide 91 Comment
  SEINET3377729  Cardamine nuttallii var. gemmata K. T. Harper 2002-1 2002 -6 Humboldt Prarrie Creek State Park, near Orick, on Big Tree Trail. Comment
  JEPS53297  Cardamine oligosperma Lincoln Constance 1934-5-31 745 Humboldt from w boundary Park to Grasshopper Peak Road (Squaw Peak Road) (n side creek, Bull Creek flat, along Bull Creek, Bull Creek Region, South Fork Eel River); Bull Creek Region, South Fork Eel River, Bull Cr Comment
  UC673286  Cardamine oligosperma Lincoln Constance and Reed C. Rollins 1942-5-11 2871 Humboldt three mi e East Fork Willow Creek; North Coast Ranges, e of East Fork Willow Creek Comment
  UC1222956  Carduus pycnocephalus subsp. pycnocephalus Joseph P. Tracy 1947-6-8 17703 Humboldt vicinity of, 1/2 mi w of town Carlotta 30 Comment
  CAS-BOT-BC18008  Carex arcta Joseph Prince Tracy 1934-7-13 13389 Humboldt Dow's Prairie. 60 Comment
  CHSC85062  Carex arcta Gordon Leppig 2002-7-12 1785 Humboldt Pacific Lumber Company Land. L 35 Rd. 1/2 mile west of Fox Creek Road, west side of large swamp. 70 Comment
  SEINET2044695 Image available Carex arcta Juha Pykala, D. H. Norris 1987-6-5 1436 Humboldt E of Maple Creek, Lake Prairie. 1052 Comment
  UC562629  Carex athrostachya Joseph P. Tracy 1935-7-23 14140 Humboldt Trinity summit, Corral Prairie Comment
  CHSC85985  Carex bolanderi L. P. Janeway 2003-7-30 7947 Humboldt High North Coast Ranges. Small spring and seep 100 m south-west of Clear Lake, 3.1 km southeast of Titlow Hill. 1494 Comment
  HSC98962  Carex bolanderi Cara Witte 2008-7-16 913 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  POM247168  Carex brainerdii Joseph P. Tracy 1935-7-30 14350 Humboldt 2 miles SW of top, Salmon Summit. 1768 Comment
  CAS-BOT-BC19614  Carex brainerdii Joseph Prince Tracy 1937-7-24 15525 Humboldt Trinity Summit. Head of Devil's Hole. 1767 Comment
  UC1103103  Carex deweyana subsp. leptopoda Joseph P. Tracy 1923-6-20 6309 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  UC750613  Carex deweyana subsp. leptopoda Henry M. Pollard 1945-9-1 Humboldt Camp Creek Klamath River Canyon Comment
  UC249759  Carex echinata subsp. phyllomanica Joseph P. Tracy with H. E. Parks 1924-8-3 6773 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC76837  Carex exsiccata L. P. Janeway 1982-6-12 4 Humboldt Dry Lagoon 3 Comment
  CAS-BOT-BC19968  Carex exsiccata Milo S. Baker 1927-8-21 24706 Humboldt Near Bald Mountain. 914 Comment
  CAS-BOT-BC20010  Carex feta L. R. Abrams 1918-6-16 7164 Humboldt Willow Creek. Comment
  UC194817  Carex feta Joseph P. Tracy 1913-6-23 4281 Humboldt opposite Buck Mountain (near pond at summit of ridge between Van Duzen and Mad River); Northern Coast Ranges, Dinsmore's Ranch 1066 Comment
  CHSC45238  Carex geyeri L. P. Janeway 1984-6-17 848 Humboldt Titlow Hill Rd at turn to Horse Mtn. 1420 Comment
  BLMAR179  Carex globosa Jennifer Anthony-Wheeler 1994-6-7 179 Humboldt King range, Near horse Mt ridgee 670 Comment
  HSC96578  Carex gynodynama Gordon Leppig, Todd Treadwell 2005-6-8 2249 Humboldt Blue Slide Creek watershed, Pacific Lumber Co. land. 245 Comment
  UC213330  Carex gynodynama Joseph P. Tracy 1920-5-18 5324 Humboldt Northern Coast Ranges: On South Fork, 5 miles above Dyerville. Along Eel River from South Fork to Scotia. Comment
  CAS-BOT-BC146619  Carex gynodynama Alice Eastwood; John Thomas Howell 1937-6-22 4750 Humboldt 8 1/2 miles from Blocksburg on road to Bridgeville Comment
  CAS-BOT-BC22311  Carex harfordii Joseph Prince Tracy 1938-6-15 15933 Humboldt Vicinity of Carlotta. 30 Comment
  RSA214832  Carex hendersonii Victor Duran 1933-5-12 3412 Humboldt Bull Creek, at South Fork of the Eel River Comment
  HSC102203  Carex integra M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1118 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  CAS-BOT-BC35563  Carex jonesii Joseph Prince Tracy 1935-7-26 14257 Humboldt Trinity Summit, Meadows at Water Dog Lakes 1828 Comment
  CAS-BOT-BC7789  Carex laeviculmis Joseph Prince Tracy 1914-7-4 4524 Humboldt High Prairie on Bald Mountain. 1066 Comment
  UC249733  Carex lenticularis var. limnophila Joseph P. Tracy 1923-6-17 6275 Humboldt Northern Coast Region, Big Lagoon Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  HSC103142  Carex lenticularis var. lipocarpa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1068 Humboldt Patterson Meadows 1555 Comment
  JEPS79865  Carex leporina Joseph P. Tracy 1936-6-28 15014 Humboldt near Murphy Meadow (Bald Mountain); Bald Mountain 1066 Comment
  HSC102201  Carex leptopoda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1115 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  CAS-BOT-BC31584  Carex luzulina var. luzulina Joseph Prince Tracy 1930-7-16 8987 Humboldt South Fork Mountain, in wet meadow at McKay Camp. 1676 Comment
  HSC82969  Carex lyngbyei A. L. Eicher 1986-5-14 Humboldt Bordering Humboldt Bay, 0.3 mi. S of junction of Samoa Blvd. and Vance Ave. 1 Comment
  HSC98941  Carex mendocinensis Cara Witte 2008-6-4 682 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  RSA0014502  Carex mendocinensis Joseph P. Tracy 1924-6-15 6697 Humboldt Near Ruby Creek, on the Willow Creek Highway. 610 Comment
  SEINET7483608 Image available Carex mendocinensis Ray Tallent 1987-1 894 Humboldt Six Rivers National Forest; Roadside S of Horse Mtn 1420 Comment
  HSC102235  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1157 Humboldt Patterson Meadows 1555 Comment
  HSC45437  Carex microptera Thomas W. Nelson, Jane P. Nelson 1978-7-2 4401 Humboldt Off FS 2S08 near Pine Mtn., road to Lost Lake 1463 Comment
  HSC71111  Carex multicaulis M. A. Baker 1980-5-23 1387 Humboldt Near Buck Mtn. 343 Comment
  JEPS79852  Carex nudata Joseph P. Tracy 1935-6-22 13959 Humboldt mouth of Larrabee Creek (North Coast Ranges, Eel River); North Coast Ranges, Eel River 45 Comment
  SEINET3905214  Carex nudata Thomas Nelson 1977-5-30 3407 Humboldt In Mad River at Anderson's Ford north of Dinsmore on the McKeown Ranch.; 0 610 Comment
  JEPS94284  Carex obnupta Vernon Oswald and Lowell Ahart 1997-9-4 8856 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, North Spit Comment
  UCD140704  Carex obnupta Linda M. Barker 1976-4-30 1421 Humboldt 3 miles west of Arcata. Comment
  NY11255  Carex olympica J. P. Tracy 1911-7-7 3390 Humboldt At the meadows on mountain side, three miles northwest of junction of Willow creek with Trinity River, and near Beebe's Ranch 914.4 Comment
  CAS-BOT-BC119221  Carex pachystachya Harold Ernest Parks; Joseph Prince Tracy 1935-6-16 11271 Humboldt Buck Mt. Lower NW slope. 792 Comment
  RSA246858  Carex pansa Robert F. Thorne, Percy C. Everett 1965-8-5 35165 Humboldt Samoa Dunes. 3 Comment
  UC194803  Carex pansa Joseph P. Tracy 1911-6-25 3258 Humboldt Eureka Northern Coast Region 0 Comment
  CAS-BOT-BC118822  Carex preslii R. Tallent 1987-8-11 895 Humboldt Six Rivers National Forest. Roadside S of Horse Mtn. 1389 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
  UC1103585  Carex serratodens Joseph P. Tracy 1925-5-30 7049 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  RSA783710  Carex subbracteata P. F. Zika 2009-6-16 24500 Humboldt Outer North Coast Range: Above Route 299, 0.7 road mi W of Berry Summit. 780 Comment
  SEINET4290245 Image available Carex subbracteata Unknown 2009-1 24497 Humboldt Outer North Coast Range (NCoRo), between Lord-Ellis and Berry summits. Above Chezen Road, at junction with Route 299. Comment
  CAS-BOT-BC116905  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell 1937-6-23 4842 Humboldt 8 miles from Kneeland on road to Yager. Comment
  HSC44120  Carex subfusca Thomas W. Nelson, Jane P. Nelson 1976-6-15 2735 Humboldt Just W of Goat Hill along road off FS 2S08 1463 Comment
  SEINET7577147 Image available Carex subfusca Andrew L. Hipp 1999-5-31 447 Humboldt Fort Seward, Alder Point Road, ca 2 mi N of intersection w/ Ft. Seward Rd. 503 Comment
  RSA91641  Carex tumulicola Joseph P. Tracy 1932-5-1 9853 Humboldt Grassy open places at Redway. Vicinity of Garberville. 122 Comment
  UC1103085  Carex unilateralis Joseph P. Tracy 1928-6-24 8471 Humboldt valley of South Yager Creek 762 Comment
  UC194818  Carex unilateralis J. P. Tracy 1912-7-21 3783 Humboldt Alton; ; Alton, Humboldt Co. 30 Comment
  UC585635  Carex unilateralis Joseph P. Tracy 1937-8-7 15618 Humboldt Bald Mountain, Murphy Ridge 914 Comment
  CAS-BOT-BC115286  Carex utriculata Joseph Prince Tracy 1932-7-14 10563 Humboldt Trinity Summit, Corral Prairie in wet meadow. Comment
  HSC99381  Carex utriculata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 30 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
  HSC102124  Carex vesicaria M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1028 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC7088  Carex viridula H. E. Parks Sep 1934 5157 Humboldt Dry Lagoon Comment
  RSA273334  Carex viridula B. D. Rogers 1965-10-2 1017 Humboldt Big Lagoon. 0 Comment
  CDA33171  Carex viridula subsp. viridula Gordon Leppig 1999-10-3 1258 Humboldt Big Lagoon County Park, Big Lagoon Bog. Comment
  RSA167257  Castilleja affinis Joseph P. Tracy 1950-6-15 18799 Humboldt Mail Ridge, north of Harris 7 miles 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
  JEPS15614  Castilleja affinis subsp. litoralis Rimo Bacigalupi with G. Thomas Robbins and C. L. Custer 1954-8-11 4758 Humboldt 1.2 mi s Trinidad Comment
  JEPS55949  Castilleja affinis subsp. litoralis T. I. Chuang and L. R. Heckard 1968-7-3 6456 Humboldt Table Bluff Comment
  JEPS93139  Castilleja affinis subsp. litoralis M. Wetherwax 1992-5-20 2435 Humboldt n side Wedding Rock (Patrick's Point State Park); Patrick's Point State Park 30 Comment
  UC582580  Castilleja affinis subsp. litoralis Joseph P. Tracy 1926-6-18 7606 Humboldt e of Fields Landing; Humboldt Hill 152 Comment
  UC146237  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1900-7-4 867 Humboldt Samoa; North Coast Region, Humboldt Bay Region 0 Comment
  JEPS3825  Castilleja applegatei subsp. martinii Joseph P. Tracy 1938-5-1 15732 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC60038  Castilleja attenuata M. A. Baker 1978-5-6 492 Humboldt 2 km. W of Weitchpec along Klamath River Comment
  UC582569  Castilleja attenuata Joseph P. Tracy 1932-5-1 9887 Humboldt vicinity Garberville 121 Comment
  UC146238  Castilleja attenuata Joseph P. Tracy 1903-5-22 1881 Humboldt Alder Point Northern Coast Ranges, Eel River (on Eel River) 152 Comment
  CHSC95387  Castilleja exserta C. Sander 2005-8-16 CA 330 -81 Humboldt Ecoregion 14. Humboldt County. Manila Dunes ACEC. 3 Comment
  HSC59456  Castilleja exserta subsp. latifolia M. A. Ericksen 1979-5-18 301 Humboldt Samoa Dunes, .5 mi. S of Simpson Timber Company plant entrance Comment
  HSC56431  Castilleja miniata Griswold, Butler 1979-7-12 7139 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC41774  Castilleja miniata Chesnut and Drew Aug 1888 Humboldt Grouse Creek Comment
  HSC20582  Castilleja pruinosa P. W. Shields May 1955 Humboldt 4 mi. W of Hoopa Comment
  UC176983  Castilleja pruinosa Joseph P. Tracy 1912-7-31 3931 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  UC199378  Castilleja rubicundula subsp. lithospermoides P. E. Goddard 1907-5-29 . 104 Humboldt Van Duzen Comment
  UC1502122  Ceanothus R. Sutherland 1976-4-24 2 Humboldt Garberville 518 Comment
  HSC67191  Ceanothus arcuatus Thomas W. Nelson, James Nelson 1980-6-10 5416 Humboldt Along Swayback Ridge Rd. 2.5 mi. N of junction of Rd. 1S07 1463 Comment
  HSC40884  Ceanothus cordulatus Thomas W. Nelson, Jane P. Nelson 1976-6-22 2869 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  HSC37596  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-28 15 .28575 Humboldt 503 Comment
  RSA399868  Ceanothus incanus J. P. Smith, J. O. Sawyer 1975-4-6 8050 Humboldt Road to Shelter Cove, 5 miles from the Whitehorn Ettersburg jct, roadside in mixed evergreen woodland Comment
  UC502945  Ceanothus incanus Joseph P. Tracy 1932-5-1 9878 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  UC176965  Ceanothus integerrimus Joseph P. Tracy 1913-6-21 4249 Humboldt Dinsmore's Ranch Valley of Van Duzen River, Northern Coast Ranges (opposite Buck Mt.,) 762 Comment
  CAS-BOT-BC51212  Ceanothus parryi Carl B. Wolf 1941-7-28 11092 Humboldt Slopes along Eel River, 1 mi. so. of Miranda. 30 Comment
  HSC36678  Ceanothus parryi R. Sutherland 1975-5-5 19 .5575 Humboldt Bank of Mattole River at Ettersburg Bridge 191 Comment
  JEPS42289  Ceanothus parryi Lincoln Constance 1934-5-24 632 Humboldt bordering lower Look Prairie on E side South Fork Eel River (Bull Creek Region) 121 Comment
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Mar 24 2013
  BLMAR200  Ceanothus thyrsiflorus Donald Hazlett 1994-6-7 200 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC52988  Ceanothus thyrsiflorus A. A. Heller 1937-6-11 15916 Humboldt Sandy bluff above Patric Point State park, near Big Lagoon Comment
  CAS-BOT-BC52992  Ceanothus thyrsiflorus Terry Hines; Ellen Purcell; Nina Williams 1988-5-1 66 Humboldt Korbel turnoff, 1/2 mile from weigh station on Hwy 299. 60 Comment
  CHSC19497  Ceanothus thyrsiflorus Norman Dennis 1965-6-19 124 Humboldt About 1/4 mile south and 1 mile east of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 miles southeast of Kneeland. 792 Comment
  UC1198011  Ceanothus thyrsiflorus Joseph P. Tracy 1933-6-7 12520 Humboldt Blue Slide Van Duzen River, Blue Slide (on Van Duzen River) 91 Comment
  JEPS42234  Ceanothus velutinus W. L. Jepson 1932-7-24 16382 Humboldt Fruitland Mail Ridge Comment
  RSA183618  Ceanothus velutinus D. E. Anderson 1965-5-1 3591 Humboldt 6.3 miles N of Hoopa along Hwy 96 Comment
  HSC56259  Ceanothus velutinus var. velutinus G. L. Clifton, Griswold 1979-8-2 12410 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC100256  Centaurea solstitialis J. P. Smith 2009-8-3 12644 Humboldt Along the Eel River. 23 Comment
  CDA7334  Centaurea solstitialis T. C. Fuller 1961-3-21 5856 Humboldt Freeway island, 1 mile northeast of the limits of Eureka. 0 Comment
  JEPS25793  Centaurium muehlenbergii L. R. Heckard 1960-8-23 1211 Humboldt about 0.5 mi s Dry Lagoon State Park (near Orick) 152 Comment
  RSA12461  Centaurium muehlenbergii Carl B. Wolf 1934-6-30 5832 Humboldt One half mile from Briceland on road to Garberville. 91 Comment
  UC906720  Centunculus minimus Joseph P. Tracy 1942-6-15 17156 Humboldt Garberville 152 Comment
  UC562468  Centunculus minimus Joseph P. Tracy 1927-7-17 8272 Humboldt North Coast Ranges, on Chaparral Mountain, Three Cabins Three Cabins; North Coast Ranges, Chaparral Mountain, Three Cabins 457 Comment
  RSA436984  Cephalanthera austiniae Gary D. Wallace 1973-7-11 1250 Humboldt Eastern part of Prairie Creek Redwoods State Park 427 Comment
  HSC58133  Cerastium arvense Gilbert Muth 1979-8-1 12138 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC161037  Cerastium arvense Joseph P. Tracy 1906-7-1 2515 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  BLMAR609  Cerastium arvense Jennifer Anthony-Wheeler 2011-4-21 609 Humboldt King range, Above Smith gulch. Strawberry Rock. KRSR0004 243 Comment
  UC161038  Cerastium fontanum subsp. vulgare Joseph P. Tracy 1907-6-20 2569 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  HSC39961  Cerastium glomeratum Linda M. Barker 1976-4-13 1381 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC89604  Cerastium glomeratum M. Roantree 1985-4-25 10 Humboldt E side of Trinidad Head. Comment
  SEINET6904629  Cerastium glomeratum Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  JEPS51355  Cerastium viride Lincoln Constance 1934-6-3 805 Humboldt on Redwood Hwy. 1 mi. n. Dyerville (rd. from High Rock to Horse Prairie); S. Fork Eel R., Bull Creek Region Comment
  UC478904  Cercis occidentalis Marcus E. Jones, A. M. 1931-7-16 28996 Humboldt e Arcata; Junction Comment
  SD29532  Chamaebatia foliolosa Edmund R. Cross 1942-6-23 Humboldt High Sierra Trail, Sequoia National Park Comment
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Oct 26 2014
  CAS-BOT-BC85655  Chamaecyparis lawsoniana Doris K. Kildale 1927-7-3 3640 Humboldt Willow Creek Flat 152 Comment
  SEINET10719673  Chamaecyparis lawsoniana Ronald J. Mastrogiuseppe 1966-1 Mastrogiuseppe s.n. Humboldt Growing in upper Bull Creek, Humboldt Redwoods State Park. Comment
  UCD103625  Chamerion angustifolium Linda M. Barker 1976-8-24 1682 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC76201  Chamerion angustifolium subsp. circumvagum Overton, Butler 1979-8-2 12521 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC70250  Cheilanthes gracillima M. A. Baker 1980-6-8 1915 Humboldt Near Buck Flat. 1554 Comment
  HSC74806  Cheilanthes gracillima Gail Newton 1980-7-23 1717 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC99459  Cheilanthes gracillima K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 113 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
  POM182457  Cheilanthes gracillima Joseph P. Tracy 1908-7-3 2765 Humboldt Dinsmore's Ranch, in valley of Van Duzen River opposite Buck Mountain 762 Comment
  UC1222586  Chenopodium ambrosioides Joseph P. Tracy 1950-9-22 19377 Humboldt near Slate Creek (8 mi below Orleans); Klamath River 121 Comment
  UCD98340  Chenopodium murale Joseph P. Tracy 1948-1-11 17949 Humboldt Eureka. 30 Comment
  HSC40968  Chimaphila umbellata Linda M. Barker 1976-6-14 1597 Humboldt 3 mi. W of Arcata, Lanphere-Christensen Dunes Comment
  HSC41343  Chimaphila umbellata Brad Klipfel 1974-8-2 503 Humboldt Horse Mtn. Comment
  HSC54864  Chimaphila umbellata G. L. Clifton, Griswold 1979-7-25 10770 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC17950  Chimaphila umbellata Chestnut, Drew 1888-7-9 Humboldt Campbell's Comment
  CAS-BOT-BC236918  Chloropyron maritimum subsp. palustre Joseph P. Tracy 1938-7-15 16064 Humboldt At Fields Landing, around Humboldt Bay 3 Comment
  HSC74452  Chrysolepis chrysophylla Gail Newton 1980-8-10 2002 Humboldt Near Blake Mtn. 1798 Comment
  RSA20963  Chrysolepis chrysophylla Carl B. Wolf 1937-9-13 9338 Humboldt North Coast Range, summit of Grouse Mt. 1645 Comment
  CAS-BOT-BC36480  Chrysolepis chrysophylla Ella Dales Cantelow 1938-10-22 2180 Humboldt Near Red Cap Creek, SW of Orleans Comment
  HSC8634  Cicuta douglasii D. E. Anderson 1961-9-30 1850 Humboldt Blue Lake Comment
  HSC56141  Circaea alpina subsp. pacifica G. L. Clifton, Griswold 1979-8-1 11966 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC56162  Circaea alpina subsp. pacifica G. L. Clifton, Terry Griswold 1979-8-1 12038 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UCR131740  Circaea alpina subsp. pacifica C. B. Wolf 1937-8-13 09253 Humboldt North Coast Range, 11 miles east of Hoopa Valley on new road toward Trinity Summit 1584 Comment
  NY370205  Cirsium arvense L. Abrams 1916-7-11 6034 Humboldt Mouth of Grizzly Creek on Van Duzon River Comment
  UC1119169  Cirsium arvense H. S. Yates 1936-6-23 5868 Humboldt 3 mi ne Scotia; Rohnerville Quad. Comment
  UC582530  Cirsium arvense Joseph P. Tracy 1933-8-13 12963 Humboldt Arcata Bottom 15 Comment
  UCR48593  Cirsium arvense R. D. Goeden, Don W. Ricker 1987-9-2 870902- 15 Humboldt North Coast, Loleta, at bay on Cannibal Road 3 Comment
  CAS-BOT-BC284442  Cirsium brevistylum John Thomas Howell 1931-6-17 6720 Humboldt 8 miles n. of Arcata Comment
  CHSC114324  Cirsium douglasii B. Villegas 1998-8-5 Humboldt Nr. Berry Summit on Titlow Hill Rd., 4.8 mi. S of Hwy 299. Comment
  RSA0070610  Cirsium douglasii var. douglasii H. E. Parks, S. T. Parks 1947-06 24441 Humboldt South Fork Camp, Willow Creek. Comment
  BLMAR107  Cirsium occidentale var. candidissimum Jennifer Anthony-Wheeler 1994-7-26 107 Humboldt Lacks Creek, growing on dry exposed banksurrounded by doug fir 1158 Comment
  HSC97973  Cirsium occidentale var. candidissimum Cara Witte 2007-6-21 318 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1390 Comment
  HSC89489  Cirsium vulgare P. A. Daly 1986-2-28 65 Humboldt Trinidad Head, along trail 61 Comment
  UCD130816  Cirsium vulgare R. E. Nelson 1956-7-3 192 a Humboldt 1.5 miles south of Brush Mountain in vicinity of Salyer , Six Rivers National Forest. 792 Comment
  CAS-BOT-BC228801  Cistanthe umbellata Doris K. Kildale 1925-8-17 1227 Humboldt Trinity Summit along summit near Ranger Station 1828 Comment
  CAS-BOT-BC162634  Clarkia J. Ed. McClellan; Bonnie McClellan 1972-6-1 s.n. Humboldt Dune flat, Samoa Comment
  CAS-BOT-BC160973  Clarkia amoena subsp. amoena L. R. Abrams 1918-6-16 7140 Humboldt Willow Creek Comment
  UC668237  Clarkia amoena subsp. amoena Joseph P. Tracy 1938-6-17 15957 Humboldt s of point Cape Mendocino (near ocean shore) 3 Comment
  CAS-BOT-BC164595  Clarkia gracilis subsp. gracilis Alice Eastwood; John Thomas Howell 1937-6-23 4802 Humboldt Little Van Duzen River Comment
  CAS-BOT-BC172515  Clarkia purpurea subsp. quadrivulnera Alice Eastwood; John Thomas Howell 1937-6-22 4722 Humboldt Near Harris Comment
  OBI36368  Clarkia purpurea subsp. quadrivulnera David J. Keil 1983-7-1 17270 Humboldt Ca. 13 mi W of jctn US 101 along Bull Crk Flats Rd Comment
  UC562525  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1933-7-3 12634 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC172513  Clarkia purpurea subsp. quadrivulnera Mrs. H. C. Cantelow 1940-7-6 s.n. Humboldt Near Dinsmore's Comment
  UC180230  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1914-7-5 4569 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC16262  Clarkia purpurea subsp. viminea Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  HSC54010  Clarkia rhomboidea Griswold, Butler 1979-7-10 7136 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  UC494115  Claytonia exigua subsp. glauca H. E. Parks and J. P. Tracy 1930-5-26 878 Humboldt Laribee Valley Comment
  SEINET6903113  Claytonia perfoliata Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  CAS-BOT-BC439932  Claytonia perfoliata subsp. mexicana C. E. Fellows 1972-4-29 480 C Humboldt Ca. 8 miles ESE of Eureka. 3.1 miles above the town of Freshwater on the W side of the road to Kneeland. Ca. 20 m below the road (and the dump) 609 Comment
  CAS-BOT-BC440095  Claytonia perfoliata subsp. perfoliata J. H. Thomas 1949-6-13 922 Humboldt Along Klamath River, about 1 mile north of town of Orleans. Comment
  HSC65860  Claytonia saxosa Gail Newton 1980-6-28 735 Humboldt Near Mad River Butte. 1536 Comment
  HSC74046  Claytonia saxosa Gail Newton 1980-7-11 1320 Humboldt Near Red Mtn. 1341 Comment
  HSC17738  Claytonia sibirica J. R. Eichelberger 1964-4-10 25 Humboldt 4 mi. above Blue Lake on Hwy. 299 Comment
  HSC64327  Claytonia sibirica J. P. Smith 1973-5-26 6850 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC1136740  Claytonia sibirica H. L. Person 1932-8-8 Humboldt Freshwater; Eureka Quad. Comment
  CAS-BOT-BC443900  Claytonia sibirica David D. Keck 1948-7-2 6004 Humboldt E. side Rocky Ridge, E. of Berry's Summit, 8.5 mi. W. of Willow Creek, 1/4 mi. W. of boundary of Six Rivers Nat. For. 762 Comment
  UC1223243  Claytonia sibirica Joseph P. Tracy 1950-7-2 18960 Humboldt 6 mi ne Hawkins Bar (Fern Spring); Trinity Summit Range, Happy Camp Mountain, Fern Spring 1280 Comment
  HSC17719  Claytonia washingtoniana D. E. Anderson 1962-3-31 1972 Humboldt Coastal area of Prairie Creek State Park Comment
  JEPS61603  Clintonia andrewsiana W. L. Jepson 1932-8-9 16540 Humboldt Bull Creek 106 Comment
  HSC100554  Clintonia andrewsiana Carl C. Marshall May 1885 69 Humboldt Redwood forests. Comment
  HSC15446  Clintonia andrewsiana Jack Rockwell 1962-4-29 67 Humboldt S bank Van Duzen River E of Hwy. 101 Comment
  JEPS61601  Clintonia andrewsiana W. L. Jepson 1921-9-11 9462 Humboldt n of Garberville Comment
  UC3541  Clintonia uniflora Mrs. M. H. Manning 1901-1 Humboldt Trinity Summit Comment
  CDA3701  Coincya monensis Jim Belsher 1997-2-13 2 Humboldt Lot ESE of the Manila Community Services District sewage pump station Comment
  CAS-BOT-BC238027  Collinsia Doris Kildale Gillespie 1931-6-7 10608 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC70392  Collinsia grandiflora M. A. Baker 1980-6-8 1908 Humboldt Near Buck Flat. 1554 Comment
  UC582461  Collinsia grandiflora Joseph P. Tracy 1927-6-12 8159 Humboldt Horse Mtn; Northern Coast Ranges; Horse Mtn 1219 Comment
  HSC101977  Collinsia linearis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 874 Humboldt Patterson Meadows 1566 Comment
  UC1196753  Collinsia linearis Joseph P. Tracy 1935-7-30 14376 Humboldt near top of Salmon Summit Salmon Summit 2072 Comment
  HSC32278  Collinsia parviflora D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5625 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC96206  Collinsia parviflora J. McIntire, S. Lyon 2005-6-8 4 Humboldt Cold Springs Camp, 7.4 mi. S of Hwy. 299 on F.S. Rd. NF1 1402 Comment
  HSC81603  Collinsia rattanii Thomas W. Nelson, Jane P. Nelson 1980-5-25 5265 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  JEPS25071  Collinsia sparsiflora var. arvensis Joseph P. Tracy 1904-4-3 2007 Humboldt immed. vicinity Eureka 0 Comment
  HSC35779  Collomia grandiflora Thomas W. Nelson, B. Reinhardt 1975-7-30 2095 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  UC535757  Collomia heterophylla Eleanor Armstrong 1934-5-17 Humboldt Garden Club Grove Comment
  HSC44406  Collomia heterophylla R. York 1978-5-6 158 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 Comment
  UC1537481  Collomia heterophylla Gordon H. True 1936-5-11 458 Humboldt 10 mi w Miranda (w slope); Salmon Creek 457 Comment
  UC582686  Collomia heterophylla Joseph P. Tracy 1937-5-17 15296 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC27899  Conium maculatum B. R. Templeton 1962-5-15 Humboldt 3 mi S of Arcata Comment
  CAS-BOT-BC286025  Conyza canadensis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  SEINET10474193  Conyza canadensis Mary Susan Taylor 1982-10-24 Taylor 5182 A Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  UC1199443  Conyza floribunda Joseph P. Tracy 1929-10-13 8679 Humboldt Carlotta 60 Comment
  RSA0049662  Coptis laciniata Dean Wm. Taylor 2011-5-4 21115 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junciton with Highway 36 734 Comment
  JEPS8448  Corallorhiza maculata Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3421 Humboldt Snow Camp Bald Mountain ridge (edge of meadow, ridge between Mad River and Redwood Creek) 1432 Comment
  RSA249377  Corallorhiza maculata D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5562 Humboldt Westward lower slopes of Black Lassic near Trinity County line 1585 Comment
  UC14984  Corallorhiza maculata Chesnut and Drew 1888-7-9 Humboldt Campbell's Comment
  HSC99048  Corallorhiza mertensiana Cara Witte 2007-6-20 315 Humboldt National Forest 1. 1.5 miles south of Titlow Hill. 1439 Comment
  UC1222818  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1950-6-17 18839 a Humboldt slough at railroad bridge (salt marsh); Eureka Comment
  HSC76251  Cordylanthus tenuis subsp. viscidus Denis Kearns 1981-7-6 64 Humboldt Near Mosquito Lake 1256 Comment
  OBI9572  Cordylanthus tenuis subsp. viscidus Carl B. Wolf 1937-8-13 9225 Humboldt North Coast Range, 8 mi E of Hoopa Valley on new road towards Trinity summit Comment
  UC1196814  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1949-8-4 18413 Humboldt Mud Springs Trinity Summit 1341 Comment
  HSC100233  Cordyline australis J. P. Smith 2010-5-29 12890 Humboldt Eureka. Abandoned railroad right-of-way along Railroad Ave., just south of its junction with West 14th. 2 Comment
  BLMAR678  Corethrogyne filaginifolia Jennifer Wheeler 2013-7-12 678 Humboldt King range, Johnny Jack Ridge 677 Comment
  CAS-BOT-BC101150  Corethrogyne filaginifolia Joseph P. Tracy 1938-7-15 16059 Humboldt fields at Bucksport, at Eureka 6 Comment
  UC494209  Corethrogyne filaginifolia J. Burtt Davy 1899-6-30 6185 Humboldt near Ferndale Comment
  POM356151  Corethrogyne filaginifolia var. californica M. B. Dunkle 1926-8-18 4827 Humboldt Moonstone Beach Comment
  RSA46899  Cornus californica Doris K. Kildale 1925-9-27 1370 Humboldt Alton - Van Duzen River. 30 Comment
  CAS-BOT-BC212006  Cornus nuttallii Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC100453  Cornus nuttallii Carl C. Marshall Jun 1886 283 Humboldt Bald Hills. Comment
  HSC39628  Cornus nuttallii Thomas W. Nelson, Jane P. Nelson 1976-6-15 2733 Humboldt Just W of Goat Hill, along branch road off FS 2S08 1463 Comment
  HSC41246  Cornus nuttallii Brad Klipfel 1974-5-27 393 Humboldt Near Horse Mtn. Comment
  HSC6410  Cornus nuttallii Francis Winter 1960-4-24 Humboldt 2 mi. N of Hwy. 299, on Redwood Creek Rd. 396 Comment
  HSC6415  Cornus nuttallii Lincoln Constance 1934-6-2 789 Humboldt S Fork Eel River, Bull Creek, 0.5 mi. W of mouth. Comment
  HSC99264  Cornus nuttallii T. Jimerson, J. Pageau 1979-6-13 548 Humboldt Near Onion Lake, close to the town of Orleans. 549 Comment
  RSA273406  Cornus nuttallii Thomas W. Nelson, Jane Nelson, A. Nelson 1976-6-15 2733 Humboldt Off 2S08 just west of Goat Hill. 1463 Comment
  RSA0019453  Cornus occidentalis C. B. Wolf 1937-8-13 9251 Humboldt North Coast Range, 11 mi. E of Hoopa Valley on new road towards Trinity Summit. 1524 Comment
  HSC58341  Cornus sericea subsp. sericea Overton, Butler 1979-8-2 12665 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC1196906  Cornus sericea subsp. sericea Joseph P. Tracy 1900-9-10 967 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA24326  Cornus sessilis C. B. Wolf 1941-2-28 4048 Humboldt Junction of Willow Creek and its E. fork. 457 Comment
  UC1199211  Coronopus didymus Joseph P. Tracy 1901-7-31 1234 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 60 Comment
  UC55959  Corylus californica Joseph P. Tracy 1901-6-23 1176 Humboldt near Ryan's Slough Hill Eureka, immediate vicinity of 0 Comment
  HSC58224  Corylus cornuta subsp. californica Walter Overton 1979-8-1 12367 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UCD110089  Corylus cornuta subsp. californica J. Street 1950-6-24 s.n. Humboldt Honeydew. Comment
  HSC104409  Corylus cornuta subsp. californica Adam N. Canter 2017-3-10 4 Humboldt Table Bluff, along Hookton Road. 13 Comment
  SEINET12034008  Corylus cornuta var. californica J. P. Tracy 1951-1 19624 Humboldt along Van Duzen at Blue Slide 91 Comment
  POM289379  Cotula coronopifolia Lyman Benson 1928-7-10 435 Humboldt Clam Beach, Trinidad. 15 Comment
  UC1409109  Cotula coronopifolia Robert F. Thorne and P. Everett 1965-8-8 35272 Humboldt n edge Eureka (e of Hwy 101) 4 Comment
  UCR37534  Crassula connata L. P. Janeway 1983-5-1 256 Humboldt Northern Coast, North Spit (Samoa Peninsula). Sand dunes west of Samoa Rd and north of Coast Guard Station 6 Comment
  UC1787277  Crepis capillaris G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6998 Humboldt North coastal strand.: North spit of Samoa Peninsula, 0.5 mi N of CA-225 bridge over Humboldt Bay. 6 Comment
  CAS-BOT-BC291479  Crepis capillaris Paul F. Covel 1937-7-12 1103 Humboldt Bolling Redwood Grove Comment
  HSC5446  Crepis capillaris L. K. Weld 1967-7-16 2 Humboldt Myrtle Ave. 1 mi. S of Freshwater Corners Comment
  SEINET2145774 Image available Crepis pleurocarpa Unknown 1933-7-25 12826 Humboldt Horse Mountain 1430 Comment
  HSC96260  Crepis pleurocarpa Laurel Goldsmith, Wanda Naylor 2005-6-15 10 Humboldt 1 mi. SE of Grouse Mtn. on unnamed F.S. road 1400 Comment
  HSC98848  Crepis pleurocarpa Cara Witte 2008-7-11 871 Humboldt National Forest Road 6N36. 1/4 mile from intersection with National Forest 1. 1443 Comment
  SEINET10529035  Crocosmia aurea Charlene A. Bennett 1976-8-6 Bennett 477 Humboldt Collected by hwy. 101, N side of orick. Rocky area, densely forested by river 30 Comment
  HSC100402  Cryptantha Carl C. Marshall 428 Humboldt Perrington. Comment
  HSC57202  Cryptantha affinis Griswold, Butler 1979-7-10 7108 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC57921  Cryptantha affinis Gilbert Muth 1979-7-31 11542 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  UC1239663  Cryptantha affinis Joseph P. Tracy 1939-8-5 16386 Humboldt Dinsmore's 737 Comment
  JEPS67665  Cryptantha intermedia W. L. Jepson 1902-7-14 2025 Humboldt Hupa Valley Comment
  UC1239649  Cryptantha torreyana Harold E. Parks and Joseph P. Tracy 1934-6-27 11058 Humboldt Grouse Mt. 1432 Comment
  UC1222267  Cryptantha torreyana Joseph P. Tracy 1949-8-11 18484 Humboldt 3 mi se Snow Camp; Twin Lakes 1463 Comment
  UC198629  Cuscuta occidentalis Joseph P. Tracy 1916-9-6 4760 Humboldt headwaters of Canoe Creek Northern Coast Ranges, Grasshopper Ridge, Canoe Creek 609 Comment
  SD90539  Cuscuta pacifica var. pacifica Robert F. thorne, P. Everett 1965-8-8 35280 Humboldt North edge of Eureka, east of Hwy. 101 3 Comment
  UCD119159  Cynoglossum grande D. W. Cooper 1971-5-11 s.n. Humboldt On Charles Moore's ranch on Kneeland Ridge, ca. 10 miles east of Eureka. Comment
  SEINET12280946  Cynoglossum grande J. P. Tracy 1950-1 18647 Humboldt ca 5 mi N of Bridgeville, on the road to the South Yager Valley Comment
  BLMAR144  Cynosurus echinatus Donald Hazlett 1994-6-7 144 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  RSA137066  Cynosurus echinatus I. L. Wiggins 1957-6-21 14142 Humboldt Margin of grassy slide area on east side of road, 1 mile south of Garberville Comment
  HSC37996  Cyperus eragrostis Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  CAS-BOT-BC114369  Cyperus erythrorhizos Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  HSC96372  Cyperus parishii Gordon Leppig 2004-9-6 2197 Humboldt E bank of Trinity River, across river from the Loncar Summer Estate, 3.5 km N of Willow Creek 120 Comment
  UC1196445  Cypripedium montanum D. F. Young 1924-4-26 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC55069  Cystopteris fragilis G. L. Clifton, Griswold 1979-7-31 11649 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC98541  Cystopteris fragilis Cara Witte 2008-6-9 704 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1418 Comment
  UCD136399  Cystopteris fragilis Lincoln Constance 1934-6-2 781 Humboldt Bull Creek Region, South Fork Eel River. Comment
  CDA36734  Cytisus scoparius Richard R. Halse 2010-3-25 7856 Humboldt Along U.S. Hwy 101 ca. 9.7 miles south of Orick. Comment
  CHSC19747  Cytisus scoparius Gary J. Stebbings 1970-2-2 1 Humboldt Along Big Lagoon Park road across from the store. Comment
  UCD105685  Cytisus scoparius R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  UC526850  Danthonia californica Joseph P. Tracy 1934-7-12 13377 Humboldt Big Lagoon 3 Comment
  UC552732  Danthonia californica var. americana Joseph P. Tracy 1935-5-25 13853 Humboldt Fort Seward 106 Comment
  HSC20252  Darmera peltata Jack Rockwell 1962-4-29 59 Humboldt E bank of Redwood Creek, near Hwy. 299 549 Comment
  JEPS12211  Datura stramonium W. L. Jepson 1932-7-28 16436 Humboldt Dyerville 88 Comment
  CDA30706  Daucus carota M. K. Beyers, I. Shepardson 2009-9-13 251 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
  RSA43886  Daucus carota H. M. Pollard 1948-8-7 s.n. Humboldt Near Orleans Comment
  UC1197352  Daucus pusillus Joseph P. Tracy 1901-8-2 1248 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC154245  Daucus pusillus J. P. Tracy 1900-7-4 887 Humboldt Ocean Beach at Samoa opposite Eureka Comment
  HSC102608  Delphinium decorum subsp. tracyi M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1595 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  RSA0005306  Delphinium decorum subsp. tracyi H. E. Parks, J. P. Tracy 1930-5-25 789 Humboldt Laribee Valley 915 Comment
  RSA79370  Delphinium decorum subsp. tracyi E. K. Balls, Lee W. Lenz 1952-5-12 17196 Humboldt 11.2 miles E along Hwy 36 from Bridgeville to Cobbs Comment
  POM149763  Delphinium hesperium L. R. Abrams 1916-7-11 600 Humboldt Between Blocksberg and Bridgeville Comment
  HSC98172  Delphinium nudicaule Allan R. Marshall 1962-5-11 9 Humboldt 50 yds. in front of N side of Hwy. 299 610 Comment
  UC1736195  Delphinium nuttallianum Dean W. Taylor 1971-5-5 1061 Humboldt near Arcata Comment
  HSC63284  Delphinium nuttallianum M. A. Baker 1979-6-27 933 Humboldt Head of Oregon Creek Comment
  RSA259574  Delphinium trolliifolium Thomas W. Nelson, James Nelson 1973-5-28 942 Humboldt McKeown Ranch north of Dinsmore. Comment
  UCD131743  Delphinium trolliifolium Collector unknown 2013-4-23 s.n. Humboldt Near Ferndale. 914 Comment
  UC13904  Delphinium trolliifolium W. C. Blasdale 1896-6-7 Humboldt Graham's Ranch Comment
  UC503048  Delphinium trolliifolium Joseph P. Tracy 1927-4-23 7909 Humboldt on bluffs Northern Coast Region, vicinity of Trinidad 60 Comment
  CAS-BOT-BC194297  Deschampsia cespitosa subsp. cespitosa Malcom A. Nobs; S. Galen Smith 1949-8-3 1167 Humboldt Borders of irrigation ditch, 1 mile south of Fields Landing, Eel River Valley Comment
  CAS-BOT-BC192545  Deschampsia cespitosa subsp. holciformis J. B. Davy; W. C. Blasdale 1899-5-1 6214 Humboldt Eureka Comment
  CHSC31326  Deschampsia cespitosa subsp. holciformis Mark Stopher 1980-6-4 94 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  HSC98118  Deschampsia danthonioides Cara Witte 2007-6-21 328 Humboldt Along National Forest 1. 3/4 mile north of Brays Opening. Near Board Camp area. 1365 Comment
  UC1103224  Deschampsia danthonioides Joseph P. Tracy 1908-6 2753 Humboldt opposite Buck Mt.; Northern Coast Ranges, valley of Van Duzen R. 762 Comment
  UC187271  Deschampsia danthonioides J. P. Tracy 1903-5-24 1911 Humboldt Alder Point on Eel. R. Alder Point; Eel. R., Alder Point 152 Comment
  UC922027  Deschampsia danthonioides Joseph P. Tracy 1950-6-25 18901 Humboldt 3 mi. s. Burr Valley (w. side of Buck Mt.); Buck Mt. 1219 Comment
  HSC38624  Deschampsia elongata D. E. Anderson, J. P. Smith 1971-6-21 - 1105 Humboldt 2 mi. E of Garberville, on rd. to Alderpoint. Comment
  HSC71726  Deschampsia elongata M. A. Baker 1980-6-26 2463 Humboldt Near Sims Creek 610 Comment
  CHSC32856  Dicentra formosa Lora Anderson 1981-4-26 4 Humboldt Ca. 5 m n of Clam Bach Rd. 0.5 km e of Hwy. 101, 9.5 mi n of Arcata. 0 Comment
  RSA273432  Dicentra formosa subsp. formosa M. A. Baker 1977-4-23 176 Humboldt 2.5 miles South of Shelter Cove Road. South fork of Bear Creek at Wailaki Campground. 561 Comment
  UC635734  Dichelostemma ida-maia H. L. Mason 1928-7-20 4909 Humboldt South Fork Mountain Comment
  CAS-BOT-BC501013  Dichelostemma ida-maia Volney Rattan 1879-1-1 s.n. Humboldt Klamath Comment
  CAS-BOT-BC501015  Dichelostemma ida-maia W. R. Dudley 1899-6-20 s.n. Humboldt Near Eel River Comment
  JEPS5675  Dichelostemma ida-maia Lincoln Constance 1934-5-23 604 Humboldt above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  SEINET3885674  Dichelostemma pulchellum James P. Smith 1973-5-5 6485 Humboldt Roadside and streamside along Cook and Green Pass.; 0 Comment
  HSC6401  Dichondra donelliana J. P. Tracy 1932-3-20 9785 Humboldt Near ocean, Trinidad 3 Comment
  HSC26885  Digitaria sanguinalis Brad Klipfel 1973-7-24 222 Humboldt Mad River flood plain, N end of Carson RR Bridge. Comment
  CAS-BOT-BC150342  Diplacus aurantiacus C. L. Hitchcock; J. S. Martin 1939-7-14 5439 Humboldt At Shelter Cove Comment
  SBBG6909  Diplacus aurantiacus M. J. Cody 1938-7-14 Humboldt Trinidad Head Comment
  CAS-BOT-BC153233  Diplacus kelloggii Dave Imper 1985-6-19 s.n. Humboldt Roadbed (10N01), 2 mi. west of Whitey's Peak 1066 Comment
  CAS-BOT-BC153235  Diplacus kelloggii Duart V. Brown 1947-4-2 33 Humboldt Near Sweed Creek, Trinity River Comment
  CAS-BOT-BC153323  Diplacus layneae Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. Trail 1371 Comment
  UC146198  Disporum hookeri Joseph P. Tracy 1908-6-9 2663 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA33404  Disporum smithii Doris K. Kildale 1927-3-20 2927 Humboldt Phillipsville Comment
  UC1197655  Disporum smithii Joseph P. Tracy 1924-5-4 6671 Humboldt Strong's Station on the Van Duzen River Van Duzen River; Northern Coast Ranges, , Strong's Station 91 Comment
  UC38073  Distichlis spicata Joseph Burtt Davy and Walter C. Blasdale 1899-6-17 5604 Humboldt Arcata Comment
  UCD64617  Distichlis spicata var. stolonifera Malcolm A. Nobs; S. Galen Smith 1949-8-3 1178 Humboldt Around Fields Landing. Comment
  UC562751  Dodecatheon alpinum Joseph P. Tracy Jul 16 1930-Jul 19 1930 8930 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain (South Fork Mountain) 1676 Comment
  UC1198624  Dodecatheon hendersonii Joseph P. Tracy 1933-6-13 12591 Humboldt on road w from Hoopa Valley (Hoopa Mountain); Northern Coast Ranges, , Hoopa Valley 914 Comment
  HSC98690  Dodecatheon hendersonii subsp. hendersonii Cara Witte 2008-6-9 702 Humboldt Off National Forest 1, near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of the road. 1506 Comment
  UC602535  Downingia elegans Joseph P. Tracy 1923-6-20 6339 Humboldt Miranda 121 Comment
  JEPS14453  Downingia elegans Joseph P. Tracy 1927-7-17 8270 Humboldt Three Cabins, on lower w foothills of Chaparral Mountain North Coast Ranges, Chaparral Mountain 457 Comment
  HSC44564  Drymocallis hansenii Brad Klipfel 1973-7-15 184 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
  UC42173  Dryopteris arguta C. C. Marshall 46 Humboldt Hoopa Valley Comment
  POM188328  Dryopteris expansa Marcus E. Jones 1931-8-2 29171 Humboldt Klamath Comment
  RSA693562  Dryopteris expansa Anstruther Davidson 1923-8-11 s.n. Humboldt Redwood Forest Comment
  JEPS109584  Dulichium arundinaceum Dean W. Taylor 2002-9-12 18344 Humboldt Lake Prairie, remnant of the original bog vegetation on the eastern end of the lake 1097 Comment
  CAS-BOT-BC197063  Echinochloa crus-galli Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CDA30189  Echinochloa crus-galli M. K. Beyers, I. Sheperdson 2009-9-13 239 Humboldt In dry portion of the western side of the Eel River, near the base of the entrance of an inlet creek, that runs underneath State Route 254 (Avenue of the Giants) and Highway 101 here. 0 Comment
  HSC101546  Ehrharta erecta J. P. Smith 2009-12-14 12703 Humboldt Along sidewalk at 980 Sixth St. in Arcata; weed Comment
  CAS-BOT-BC113643  Eleocharis acicularis Doris K. Kildale 1928-7-29 5932 Humboldt Kinman Pond, Bear River Ridge. Comment
  UC668024  Eleocharis macrostachya Joseph P. Tracy 1934-7-20 13463 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC113110  Eleocharis obtusa LeRoy Abrams 1918-6-16 7158 Humboldt Willow creek. Comment
  RSA298364  Eleocharis palustris Thomas W. Nelson 1977-9-22 3749 Humboldt In drainage ditch along east side of State Route 101 just north of the Eureka Airport Comment
  HSC77865  Eleocharis parvula L. J. Heflin 1984-5-13 5 Humboldt Hauser Marsh Comment
  HSC98996  Eleocharis quinqueflora Cara Witte 2008-7-16 925 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  POM295856  Elymus glaucus Lyman Benson 1929-7-14 1793 Humboldt Weott Ranger Station S. Fork Eel River Comment
  UCD61792  Elymus glaucus J. B. Davy; W. C. Blasdale 1899-6-16 5565 Humboldt Alton. Comment
  CAS-BOT-BC203472  Elymus glaucus subsp. glaucus Joseph P. Tracy 1935-6-22 13958 Humboldt Holmes Flat 60 Comment
  UC552757  Elymus glaucus subsp. jepsonii Joseph P. Tracy 1934-7-9 13336 Humboldt ridge near Harris; North Coast Ranges 762 Comment
  UC212884  Elymus glaucus subsp. virescens Joseph P. Tracy 1920-7-4 5340 Humboldt Little River Beach Northern Coast Ranges (rocky bluffs facing ocean) 15 Comment
  HSC74674  Elymus multisetus Gail Newton 1981-7-23 2269 Humboldt Near Bug Creek Butte 1494 Comment
  HSC98008  Elymus multisetus Cara Witte 2007-7-8 439 Humboldt Board Camp Mountain. Trail 4E28. 1498 Comment
  SEINET10831695  Elymus trachycaulus Joseph P. Tracy 1912-7-7 Tracy 3743 Humboldt Eureka. Edge of salt marsh-in wet soil. 0 Comment
  RSA10129  Elymus trachycaulus subsp. trachycaulus Joseph P. Tracy 1926-7-5 7736 Humboldt Valley of South Yager Creek. 762 Comment
  POM271541  Epilobium angustifolium var. macrophyllum Lyman Benson 1928-7-8 725 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; Watershed: S Fork Eel River. 61 Comment
  RSA167259  Epilobium brachycarpum Joseph P. Tracy 1950-9-10 19356 Humboldt Bear River Ridge 610 Comment
  HSC35708  Epilobium brachycarpum Thomas W. Nelson, B. Reinhardt 1975-7-30 2117 Humboldt E of Pilot Rock Comment
  HSC43234  Epilobium brachycarpum R. Sutherland 1976-8-6 4 .6876 Humboldt 229 Comment
  JEPS39208  Epilobium brachycarpum Joseph P. Tracy 1917-9-3 4854 Humboldt lower w slopes of mt. Northern Coast Ranges, Grouse Mt., Janes Ranch 914 Comment
  HSC97988  Epilobium canum subsp. latifolium Cara Witte 2007-7-8 438 Humboldt Board Camp Mountain. Trail 4E28. 1498 Comment
  HSC55141  Epilobium ciliatum G. L. Clifton, Griswold 1979-8-1 12024 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC103280  Epilobium ciliatum subsp. glandulosum John McRae 2012-9-7 1270 Humboldt Six Rivers National Forest, Lower Trinity District, Forest Service Road 5N10, at the crossing of Willow Creek. 1294 Comment
  SEINET9075566 Image available Epilobium ciliatum subsp. watsonii Robert F. Thorne, P. Everett 1965-1 35201 Humboldt Samoa Peninsula 0 Comment
  HSC98058  Epilobium densiflorum Cara Witte 2007-7-17 543 Humboldt White Oak Opening 1257 Comment
  HSC98676  Epilobium hornemannii subsp. hornemannii Cara Witte 2007-6-21 324 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1430 Comment
  UC505128  Epilobium minutum Joseph P. Tracy 1932-5-1 9843 Humboldt Alton North Coast Ranges, Van Duzen River 30 Comment
  HSC58112  Epilobium oregonense G. L. Clifton, Griswold 1979-8-1 12068 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC549763  Equisetum hyemale subsp. affine Joseph P. Tracy 1933-6-6 12506 Humboldt Trinidad; Northern Coast Region 60 Comment
  UC1239790  Equisetum laevigatum Joseph P. Tracy 1931-3-26 9292 Humboldt near Alton (river bar of Van Duzen River); Northern Coast Region 30 Comment
  UC1239786  Equisetum telmateia subsp. braunii Joseph P. Tracy 1937-3-21 15235 Humboldt Van Duzen River near Grizzly Creek; Van Duzen River 91 Comment
  HSC95578  Equisetum telmateia subsp. braunii Andrea Pickart 2002-3-31 23 Humboldt Arcata Marsh, Dan Hauser Marsh 0 Comment
  RSA183500  Equisetum telmateia var. braunii D. V. Sanford 1963-3-23 23 Humboldt [no locality information provided] Comment
  CAS-BOT-BC213558  Eragrostis hypnoides Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans Region Comment
  CDA4547  Erechtites glomeratus M. A. Hart 1957-8-9 157 -57 Humboldt Between Eureka and Areata. 0 Comment
  UC1198998  Eremocarpus setiger Joseph P. Tracy 1908-6 2851 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC32286  Eremogone congesta var. crassula D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5632 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  JEPS19193  Ericameria greenei Joseph P. Tracy 1919-9-22 5273 Humboldt open places in Shasta fir belt; Trinity Summit 1889 Comment
  UC34650  Ericameria nauseosa var. speciosa Chesnut and Drew 1888-8-2 Humboldt Grouse Creek Comment
  UCSB30605  Erigeron canadensis Edwards, David 1974-7-30 Humboldt In NW corner of Uniontown Shopping Center at the corner of 'F' St. and 7th St., Arcata 18 Comment
  UCSC000772  Erigeron canadensis H. L. Person 1932-8-15 s.n. Humboldt Eureka, Korbel Comment
  UC774989  Erigeron foliosus var. confinis Carl B. Wolf 1937-8-13 9218 Humboldt 8 mi e Hoopa Valley (on new road towards Trinity summit); North Coast Range 1219 Comment
  UC479508  Erigeron foliosus var. mendocinus Marcus E. Jones, A. M. 1931-7-16 29149 Humboldt junction e Arcata Comment
  UC87757  Erigeron foliosus var. mendocinus J. W. Blankinship 1893-7-19 Humboldt Van Duzen River; banks Comment
  HSC5524  Erigeron glaucus J. W. Johnson 1961-8-17 1036 Humboldt Dune fields of W.M. Lanphere Farm, Samoa Peninsula Comment
  CAS-BOT-BC308846  Erigeron glaucus A. A. Heller 1937-6-12 15915 Humboldt Trinidad on the coast near the Whaling Station, foot of the grade leading up to the lighthouse on Trinidad Head Comment
  CDA4916  Erigeron glaucus Gordon Leppig 1998-6-22 840 Humboldt Dry Lagoon State Park, coastal sand dune between ocean and Dry Lagoon. Comment
  HSC5562  Erigeron inornatus var. inornatus M. H Manning 1901-7-25 311 Humboldt Bald Hill near Hoopa Comment
  UC581719 Image available Erigeron klamathensis Joseph P. Tracy 1937-7-24 15515 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC175167  Erigeron maniopotamicus Joseph P. Tracy 1908-6 2750 Humboldt nw slope Buck Mountain 762 Comment
  CAS-BOT-BC214577  Erigeron philadelphicus Alice Eastwood 1907-4-20 30 Humboldt Trinidad, near Light-house Comment
  UCD131462  Erigeron philadelphicus var. philadelphicus K. Esau 1935-5-22 s.n. Humboldt Fort Seward. Comment
  JEPS27  Eriodictyon californicum Lincoln Constance 1934-6-15 887 Humboldt Summit of Grasshopper Peak; South Fork Eel River, Bull Creek Region 975 Comment
  RSA0065545  Eriogonum baileyi Marion P. Harthill 1971-9-8 571 Humboldt Walker River, Toiyabe National Forest, Lower Campgrounds. Comment
  HSC54216  Eriogonum compositum Griswold, Butler 1979-7-12 7274 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  BLMAR108  Eriogonum latifolium Jennifer Anthony-Wheeler 1994-9-8 108 Humboldt Samoa/manilla dunes, growing in every dune mat area in the samoa rare plant protection area 12 Comment
  CHSC55905  Eriogonum latifolium L. P. Janeway 1987-7-31 2539 Humboldt Vicinity of Eurekal North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  SBBG28255  Eriogonum latifolium H. E. Parks -Aug-1941 24198 Humboldt Little River Comment
  HSC17298  Eriogonum latifolium D. E. Anderson 1961-9-22 1829 Humboldt Comment
  RSA65140  Eriogonum latifolium F. W. Peirson 1923-7-11 3713 Humboldt 6 miles north of Eureka Comment
  UC203954  Eriogonum latifolium Joseph P. Tracy 1918-7-1 4974 Humboldt 3 mi s Point of the Cape; Cape Mendocino 3 Comment
  UC672913  Eriogonum latifolium Joseph P. Tracy 1927-6-18 8175 Humboldt s point of the Cape (near ocean shore); Cape Mendocino 3 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
  UC672908  Eriogonum nudum var. auriculatum Joseph P. Tracy 1936-6-9 14900 Humboldt near Petrolia; Mattole River 15 Comment
  CAS-BOT-BC261499  Eriogonum nudum var. nudum A. G. Vestal 1937-6-20 s.n. Humboldt 4 mi. N. of Petrolia Comment
  HSC60052  Eriogonum nudum var. nudum M. A. Baker 1978-5-6 487 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  UC146155  Eriogonum nudum var. nudum Joseph P. Tracy 1908-6 2811 Humboldt opposite Buck Mountain (Valley of Van Duzen River); North Coast Ranges, Valley of Van Duzen River 304 Comment
  JEPS56193  Eriogonum umbellatum var. argus W. L. Jepson 1902-7-25 2119 Humboldt Trinity Summit Comment
  HSC55278  Eriogonum umbellatum var. stellatum Overton, Butler 1979-8-2 12689 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC56960  Eriophorum crinigerum Overton, Butler 1979-7-23 9474 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  HSC36636  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1906 Humboldt End of road to Pine Mtn. Comment
  HSC56464  Eriophyllum lanatum var. achilleoides Griswold, Butler 1979-7-12 7262 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  CAS-BOT-BC301012  Eriophyllum lanatum var. achilleoides Doris K. Kildale 1925-6-28 913 Humboldt Fleener Creek Comment
  JEPS34628  Eriophyllum lanatum var. achilleoides Lincoln Constance 1934-5-23 622 Humboldt sw slope, upper end of Look Prairie; Bull Creek Region, South Fork Eel River, Look Prairie 365 Comment
  UC582677  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1936-6-10 14929 Humboldt mountain slopes w of mouth South Fork Trinity River 457 Comment
  HSC31217  Eriophyllum lanatum var. grandiflorum D. E. Anderson 1972-6-20 5738 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  UC1198964  Erodium moschatum Joseph P. Tracy 1918-4-21 4885 Humboldt Eureka Northern Coast Ranges 0 Comment
  SEINET13944098 Image available Eryngium aristulatum Joseph P. Tracy 1912-1 3777 & 4001 Humboldt Alton, Altitude ca 100 to 300 ft 91 Comment
  CAS-BOT-BC41570  Erysimum capitatum Doris K. Kildale 1926-3-21 1578 Humboldt Knuland Prairie. 853 Comment
  HSC54208  Erysimum capitatum var. capitatum Terry Griswold, Marvin Butler 1979-7-12 7251 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC6761  Erysimum capitatum var. capitatum P. W. Shields May 1955 Humboldt 4 mi. W of Hoopa Comment
  CAS-BOT-BC54920  Erysimum menziesii Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka. Comment
  HSC28486  Erysimum menziesii J. D. Ackerman 1973-3-27 54 Humboldt 1.5 mi. S of Samoa, alongside Hwy. Comment
  HSC47486  Erysimum menziesii Sheila Logan 1978-4-7 4 Humboldt Samoa sand dunes, 1/4 mi. N of Coast Guard Station. Comment
  SEINET13694469 Image available Erythranthe alsinoides Joseph P. Tracy 1923-1 6258 Humboldt Kneeland prairie 762 Comment
  SD88386  Erythranthe moschata Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  HSC15491  Erythronium californicum Paul Shields May 1955 Humboldt 12 mi. W of Willow Creek Comment
  HSC97494  Erythronium californicum C. Witte 2007-5-21 46 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1383 Comment
  UC666966  Erythronium californicum Joseph P. Tracy 1927-3-27 7860 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC38258  Erythronium revolutum Thomas W. Nelson 1976-4-3 2283 Humboldt Hwy 36 at east end of Swain's Flat Comment
  HSC104325  Erythronium revolutum James Regan, Humboldt Redwood Co., LLC 2007-5-9 23 Humboldt Kneeland 854 Comment
  UC35061  Eschscholzia californica Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  HSC79431  Eschscholzia californica Kenneth Clark 1980-3-22 525 Humboldt On access trail above Dead Man's Gulch, Shelter Cove 122 Comment
  UC161568  Eschscholzia californica Joseph P. Tracy 1911-5-30 3210 Humboldt bluff near Bucksport; Northern Coast Region, region about Humboldt Bay 0 Comment
  POM160277  Eschscholzia californica var. crocea Joseph P. Tracy 1926-5-15 7485 Humboldt Kneeland Prairie, North Coast Ranges 762 Comment
  UC581737  Eucephalus ledophyllus Joseph P. Tracy 1932-7-15 10601 Humboldt ridges e of Corral Prairie; Trinity Summit 1828 Comment
  HSC103834  Eucephalus tomentellus Haggard 2000-8-22 71957 Humboldt Along US Forest Service Rd. 1, southeast of Blue Lake Comment
  HSC5686  Euchiton gymnocephalus David Adams 1960-7-15 Humboldt Near Azalea Reserve State Park 30 Comment
  UC1199350  Euchiton sphaericus Joseph P. Tracy 1925-8-9 7229 Humboldt near Miranda; North Coast Ranges, South Fork of Eel River 91 Comment
  CAS-BOT-BC206925  Euonymus occidentalis Joseph P. Tracy; H. E. Parks 1925-6-14 7123 Humboldt Kneeland Paririe Road, along stream. 457 Comment
  UC30135  Euonymus occidentalis var. occidentalis W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  HSC7986  Euphorbia helioscopia M. C. Hartman 1963-3-22 7 Humboldt Near farmhouse on side road, 1/4 mi. W of Alliance Rd. Comment
  HSC97316  Euphorbia oblongata M. Mesler 2007-6-9 761 Humboldt Titlow Hill Rd. 1067 Comment
  HSC69641  Euphorbia peplus R. Kalal 1980-6-8 18 Humboldt Arcata, at intersection of Hill St. and Spring St. in the dry waste area of a yard. 43 Comment
  HSC5091  Eurybia radulina H. E. Parks, J. P. Tracy 1930-9-15 769 Humboldt Kneeland Bald Hills Comment
  UC180190  Eurybia radulina Joseph P. Tracy 1914-9-6 4619 Humboldt Bald Mountain, between High Prairie and Snow Camp Bald Mountain 1066 Comment
  UC1607839  Festuca Joseph P. Tracy and Harold E. Parks 1934-6-27 11078 Humboldt Grouse Mountain 1432 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
  UC1103702  Festuca californica Joseph P. Tracy 1923-6-3 6250 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC278421  Festuca idahoensis Joseph P. Tracy 1930-7-10 8867 Humboldt Northern Coast Ranges. Brannan Mountain 1219 Comment
  UC177163  Festuca idahoensis Joseph P. Tracy 1912-7-26 3868 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC570335  Festuca idahoensis H. S. Yates 1936-6-17 5697 Humboldt lower nw slope Buck Mountain; South Fork Pk. 792 Comment
  HSC58759  Festuca occidentalis Overton, Butler 1979-7-26 9993 Humboldt Near Willow Creek 1341 Comment
  POM205853  Festuca rubra Jos Burtt Davy, Blasdale 1899-7-30 6180 Humboldt Ferndale. Comment
  SACT001197  Festuca rubra Malcolm Nobs, S. Smith 1949-8-3 Humboldt Salt marshes. Comment
  CAS-BOT-BC282520  Festuca subbiflora Joseph P. Tracy 1901-6-10 1134 Humboldt Eureka 60 Comment
  POM126172  Festuca subuliflora Joseph P. Tracy 1900-5-22 801 Humboldt Immediate vicinity of Eureka. 0 Comment
  SEINET200688 Image available Festuca subuliflora J. P. Tracy 1900-5-22 801 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC40975  Fragaria X ananassa Linda M. Barker 1976-6-14 1590 Humboldt 3 mi. W of Arcata Comment
  HSC100627  Fragaria chiloensis Carl C. Marshall Apr 1886 181 Humboldt Vicinity of Humboldt Bay. Comment
  SEINET4090923  Fragaria chiloensis O. M. Clark 1932-1 702 Humboldt North Eureka. Comment
  UC154223  Fragaria chiloensis Joseph P. Tracy 1904-4-24 2025 Humboldt Ocean Beach, sand dunes Humboldt Bay Comment
  CHSC24854  Fragaria vesca A. D. Launer 1976-4-10 1 Humboldt On n roadbank of Church St., ca. 100 yds e of Blocksburg. 472 Comment
  HSC24051  Fragaria vesca J. O. Sawyer 1971-6-15 2382 Humboldt S of Lipps Camp along Horse Linto Creek 1372 Comment
  CAS-BOT-BC457924  Fragaria vesca subsp. californica Doris K. Kildale 1927-4-17 3100 Humboldt Briceland Bridge, 1/2 mi. west of Garberville. 114 Comment
  CAS-BOT-BC457926  Fragaria vesca subsp. californica Doris K. Kildale 1927-3-20 2910 Humboldt Phillipsville, south fork of Eel River Comment
  HSC18422  Frangula purshiana subsp. purshiana R. T. Haase 1965-4-26 11 Humboldt Comment
  SEINET6694687 Image available Fraxinus oregona Joseph P. Tracy 1922-1 6060 Humboldt South Yager Creek Valley 762 Comment
  UC1197632  Fritillaria affinis Joseph P. Tracy 1922-5-29 6066 Humboldt South Yager Creek Valley; Northern Coast Ranges, South Yager Creek Valley 762 Comment
  UC429292  Fritillaria affinis Mrs. M. H. Manning 1901-1 9 Humboldt near Hupa Comment
  CAS-BOT-BC136032  Fritillaria affinis John Thomas Howell 1954-4-25 29154 Humboldt Dune hills, Little River Comment
  UC146197  Fritillaria affinis Joseph P. Tracy 1908-6-8 2640 Humboldt Kneeland Prairie, at Ashfield's Butte Kneeland Prairie; Northern Coast Ranges, , Ashfield's Butte 762 Comment
  HSC72984  Galium ambiguum subsp. siskiyouense M. A. Baker 1980-7-11 2773 Humboldt Near Red Mtn. 1341 Comment
  HSC37854  Galium aparine Peter Sorensen 1976-6-2 Humboldt Woodley Island, Humboldt Bay Comment
  POM148009  Galium aparine J. B. Feudge 1923-7-29 727 Humboldt Rohnerville. 15 Comment
  HSC70633  Galium bolanderi R. York 1980-5-18 583 Humboldt Near Black Mtn 792 Comment
  RSA698804  Galium californicum J. R. Bruff 1937-8-17 916 Humboldt Richardson Grove. Comment
  JEPS6513  Galium mollugo Harold E. Parks and Joseph P. Tracy 1937-7-16 11451 Humboldt near Trinidad; near Trinidad 60 Comment
  UC1196101  Galium parisiense Joseph P. Tracy 1924-8-10 6801 Humboldt on river bar near Strong's Station (10 mi e of Carlotta); Northern Coast Ranges 60 Comment
  HSC61722  Galium porrigens var. porrigens Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  JEPS52751  Galium porrigens var. porrigens L. T. Dempster and G. L. Stebbins 1963-7-8 3843 Humboldt at highway crossing n Willow Creek town; Willow Creek 140 Comment
  CAS-BOT-BC303393  Gamochaeta ustulata Joseph P. Tracy 1936-8-23 15163 Humboldt Carlotta 60 Comment
  HSC104445  Gamochaeta ustulata Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 9 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC1196890  Garrya buxifolia Joseph P. Tracy 1933-7-11 12677 Humboldt Horse Mountain 1402 Comment
  HSC12588  Garrya elliptica Gary J. Stebbins 1970-2-2 5 Humboldt Along Clam Beach lagoon rd. off McKinleyville exit with Hwy. 101 Comment
  HSC91891  Garrya elliptica E. Mackey 1986-7-21 Humboldt Patrick's Point State Park; Wedding Rock Trail Comment
  UC1196886  Garrya elliptica Joseph P. Tracy 1921-1-23 5413 Humboldt near Lindsay Creek (hillside on Mad River); Northern Coast Region 30 Comment
  UC630637  Garrya elliptica Joseph P. Tracy 1939-3-19 16203 Humboldt near Blue Slide (on Van Duzen River, Root Grade); Van Duzen River 91 Comment
  UCD121099  Garrya elliptica Linda M. Barker 1976-1-24 1310 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  SEINET10453481  Garrya elliptica Mary Susan Taylor 1982-10-24 Taylor 5181 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  JEPS66731  Garrya fremontii Lincoln Constance 1934-6-19 906 Humboldt near summit Grasshopper Peak; South Fork Eel River, Bull Creek Region 914 Comment
  OBI14160  Garrya fremontii Joseph P. Tracy 1939-1-14 16184 b Humboldt Trinity River Valley, at Willow crk Comment
  RSA183630  Garrya fremontii D. E. Anderson 1965-4-24 3537 Humboldt Along Titlow Hill Road, ca. two miles from its junction with Highway 299. Comment
  SEINET10930370  Gastridium phleoides Rattan RATTAN 11475 Humboldt Hoopa Valley. Comment
  UC185004  Gastridium ventricosum Joseph P. Tracy 1912-7-26 3824 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC76327  Gaultheria ovatifolia Denis Kearns 1981-7-6 63 Humboldt Near Mosquito Lake 1122 Comment
  CAS-BOT-BC58910  Gaultheria shallon Volney Rattan 1879-6-1 s.n. Humboldt unspecified Comment
  HSC98970  Gaultheria shallon Cara Witte 2008-8-5 993 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles E of intersection with National Forest 1. 1346 Comment
  RSA1915  Gaultheria shallon C. B. Wolf 1930-10-30 1043 Humboldt Old Coast Road, 4 mi. so. of Thorn. 305 Comment
  HSC75456  Gayophytum diffusum subsp. parviflorum J. O. Sawyer 1980-7-18 3600 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC549766  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10400 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC144066  Gayophytum humile Joseph P. Tracy 1908-6 2845 Humboldt Buck Mountain Northern Coast Ranges (nw slope) 1219 Comment
  HSC58834  Gayophytum racemosum Overton, Butler 1979-7-31 11406 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  NY232196  Gayophytum strictum H. N. Bolander 1866-1 6535 Humboldt Comment
  CAS-BOT-BC208038  Genista monspessulana Joseph P. Tracy 1927-7-24 8301 Humboldt Mattole Valley 152 Comment
  HSC14678  Genista monspessulana S. R. Johnson 1965-3-28 34 Humboldt 2.5 mi. N of Luffenholtz Beach Comment
  UC162854  Genista monspessulana J. P. Tracy 1906-4-22 2413 Humboldt immediate vicinity Eureka 0 Comment
  RSA256968  Gentiana oregana Gary D. Wallace 1975-8-22 1487 Humboldt Northwest of Trinidad, on level area back from bluff edge Megwil Point, Elk Head. Comment
  JEPS76805  Gentiana plurisetosa Theodore F. Niehaus 1972-8-29 935 Humboldt 0.25 to 0.50 e on right side (s) Trinity Summit Station old horse trail (directly e from crossing of new forest road at Crogan Creek, a tributary of upper Tish-Tang a Tang Creek); Salmon Mts. 1706 Comment
  CDA43207  Geranium molle Richard R. Halse 2015-3-26 9382 Humboldt Eureka; by a Texaco station near 3543 Broadway St. ((U.S. Highway 101) and its intersection with McCullens Ave. Comment
  UC492183  Geum macrophyllum var. perincisum Joseph P. Tracy 1932-7-14 10540 Humboldt at Corral Prairie, Klamath Mountains, Trinity Summit Corral Prairie; Klamath Mountains, Trinity Summit, Corral Prairie 1524 Comment
  HSC16967  Gilia capitata J. Wendell Howe 1931-6-7 Humboldt Wildcat Rd. W of Ferndale Comment
  BLMAR195  Gilia capitata subsp. capitata Donald Hazlett 1994-6-7 195 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC226147  Gilia capitata subsp. pacifica Doris K. Kildale 1925-6-28 1372 Humboldt Kneeland Prairie - bald hills 762 Comment
  CAS-BOT-BC226148  Gilia capitata subsp. pacifica Doris K. Kildale 1926-5-9 1994 Humboldt Kneeland Prairie 853 Comment
  UC1197922  Gilia capitata subsp. pacifica Joseph P. Tracy 1921-5-30 5498 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC17012  Gilia millefoliata J. W. Johnson 1962-5-13 1356 Humboldt Arcata, Christenson Farm on the Samoa Peninsula, Ridge 3 Comment
  JEPS85975  Gilia tricolor subsp. diffusa Joseph P. Tracy 1919-5-31 5144 Humboldt at Willow Creek (Trinity River Valley); Trinity River, Willow Creek 152 Comment
  UC231500  Gilia tricolor subsp. tricolor Joseph P. Tracy 1919-5-31 5144 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC37570  Glaux maritima J. D. Ackerman 1975-6-10 453 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  UC179951  Glechoma hederacea Joseph P. Tracy 1914-5-17 4475 Humboldt ridge between Freshwater and Ryans Slough (at abandoned Cumens claim); Northern Coast Region, Humboldt Bay Region 304 Comment
  CAS-BOT-BC218431  Glehnia littoralis subsp. leiocarpa L. R. Abrams 1916-7-18 6140 Humboldt At Trinidad Comment
  CHSC84624  Glehnia littoralis subsp. leiocarpa L. P. Janeway 2003-7-27 7930 Humboldt North Coast. Back of beach between Dry Lagoon and Sharp Point; just below steep slope. 4 Comment
  SJSU2516  Glehnia littoralis subsp. leiocarpa H. L. Buckalew 1962-6-18 Humboldt Gold Beach at ocean near Prairie Cr Redwoods State Park Comment
  UC1197365  Glehnia littoralis subsp. leiocarpa J. P. Tracy 1901-5-18 1097 Humboldt sand hills of Ocean Beach at Samoa opposite Eureka Comment
  UCD127515  Glehnia littoralis subsp. leiocarpa Roman Gankin 1965-8-6 550 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC55277  Goodyera oblongifolia Overton, Butler 1979-8-2 12685 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC13521  Goodyera oblongifolia Joseph Burtt Davy and Walter C. Blasdale 1899-6-18 5612 Humboldt near Acorn; North-Western California Comment
  CAS-BOT-BC304750  Grindelia hirsutula A. A. Heller 1924-7-21 13870 Humboldt At Eureka Comment
  SBBG62632  Grindelia hirsutula H. E. Parks -Aug-1941 24190 Humboldt Big Lagoon Comment
  UC1525546  Grindelia hirsutula John L. Strother 1986-10-12 1355 Humboldt on Samoa Blvd. (rte 255) w of Arcata (nw side of Arcata Bay (Humboldt Bay) opposite Emmerson Div., Sierra Pacific Inc., roadside above saltmarsh); Humboldt Bay, Arcata Bay Comment
  UC581776  Grindelia hirsutula Joseph P. Tracy 1931-9-13 9669 Humboldt mouth of Eel River Eel River (along tidal sloughs) Comment
  SEINET194315  Grindelia hirsutula var. davyi A. A. Heller 1923-7-7 13764 Humboldt Near the South Fork of the Eel River S of Garberville Comment
  POM318612  Grindelia stricta var. stricta Patricia Wilder 1968-8-21 4375 Humboldt Big Lagoon Park, just west of U.S. 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 15 Comment
  RSA93069  Grindelia stricta var. stricta J. T. Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata. Comment
  HSC97938  Hackelia californica Cara Witte 2007-5-31 143 Humboldt Off National Forest 1. Near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of road. 1510 Comment
  UC525574  Hackelia micrantha Joseph P. Tracy 1932-7-11 10421 Humboldt Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  UC667133  Hastingsia alba Joseph P. Tracy 1935-7-24 14195 Humboldt Trinity Summit near Ranger Station; Trinity Summit 1828 Comment
  RSA47164  Hastingsia serpentinicola Doris K. Kildale 1927-7-17 3771 Humboldt Bug Creek, Chaparral Mountain Comment
  UC180187  Helenium bigelovii Joseph P. Tracy 1914-7-4 4540 Humboldt at Murphy Ranch, High Prairie on Bald Mountain Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA18613  Helenium bolanderi C. B. Wolf 1937-8-10 9089 Humboldt Big Lagoon, bog at state park. 6 Comment
  JEPS35531  Helenium bolanderi W. L. Jepson 1921-8-7 9325 Humboldt 0.5 to 2 mi back from ocean between Mad River Little River; Dow's Prairie Comment
  HSC25071  Heliotropium curassavicum var. oculatum R. W. Becking 1970-10-3 Humboldt Stone Lagoon near Orick Comment
  HSC48729  Hemitomes congestum J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 523 Humboldt Off FS 10N05. SE slope of Hopkins Butte. Bulk Collection 185 1037 Comment
  HSC100436  Hemizonella parvula Carl C. Marshall Jun 1886 25 Humboldt South Fork Mtn. Comment
  UC1199372  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1934-7-9 13343 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC309992  Hemizonia congesta subsp. tracyi Doris K. Kildale 1925-10-1 1697 Humboldt Kneeland Prairie Comment
  UC1281660  Hemizonia congesta subsp. tracyi Richard Spellenberg 1965-6-14 1129 Humboldt 6 mi se Kneeland Comment
  JEPS40410  Hemizonia congesta subsp. tracyi W. L. Jepson 1902-7-1 1975 Humboldt at Berry's Ranch Redwood Creek; Hupa road Comment
  RSA259569  Hemizonia tracyi Thomas W. Nelson, Jane, James Nelson 1975-6-21 1950 Humboldt Hwy 36, 5 miles east of Bridgeville Comment
Read comments
Jan 3 2011
  JEPS14231  Heracleum lanatum Joseph P. Tracy 1934-7-27 13491 Humboldt near mouth Mad R. 15 Comment
  UC180205  Heracleum lanatum Joseph P. Tracy 1914-6-14 4511 Humboldt Carlotta North Coast Ranges, Carlotta 60 Comment
  HSC21511  Heracleum maximum D. B. Bader 1963-4-1 9 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  HSC76406  Heracleum maximum Denis Kearns 1981-7-23 428 Humboldt Near Whiteys Peak. 1524 Comment
  HSC79539  Heracleum maximum Kenneth Clark 1979-7-1 460 Humboldt Deadman's Gulch 11 Comment
  OBI12533  Hesperolinon micranthum Joseph P. Tracy 2011-7-6 3356 Humboldt Northern Coast Ranges. Mountain slopes along rd between Three crks and mouth of Willow crk Comment
  CAS-BOT-BC143655  Heteromeles arbutifolia Doris K. Kildale 1928-7-1 5315 Humboldt Klamath RIver at mouth of Bluff Creek Comment
  UC1198758  Heteromeles arbutifolia Joseph P. Tracy 1907-8-20 2602 Humboldt near Hydesville (on Yager Creek); Northern Coast Region 60 Comment
  CAS-BOT-BC311082  Heterotheca oregona var. rudis L. R. Abrams 1916-7-11 6066 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  CAS-BOT-BC420722  Heuchera micrantha var. diversifolia Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  RSA0066093  Heuchera micrantha var. diversifolia Thomas W. Nelson 1977-6-15 3423 Humboldt Along Forest Rd 5N10 just N of jct with Rd 6N08. 1372 Comment
  CAS-BOT-BC312398  Hieracium albiflorum Carl D. Duncan 1920-9-28 s.n. Humboldt Hoopa Comment
  HSC57155  Hieracium albiflorum Overton, Butler 1979-7-26 9954 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC58215  Hieracium albiflorum Walter Overton 1979-8-1 12352 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  RSA32658  Hieracium albiflorum Doris K. Kildale 1927-7-17 3752 Humboldt Bug Creek, Chaparral Mountain Comment
  UC1199467  Hieracium albiflorum Joseph P. Tracy 1933-7-25 12831 Humboldt Horse Mountain 1432 Comment
  UC166096  Hieracium albiflorum Joseph P. Tracy 1911-7-6 3351 Humboldt along road between 3 creeks and mouth of Willow Creek 762 Comment
  JEPS36565  Hieracium bolanderi Joseph P. Tracy 1926-6-20 7638 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC74490  Hieracium greenei M. A. Baker 1980-7-24 3209 Humboldt Near Orleans Mtn. 1625 Comment
  UC1199469  Hieracium nudicaule Joseph P. Tracy 1929-7-4 8629 Humboldt French Camp Ridge 1066 Comment
  UC165197  Hieracium nudicaule Joseph P. Tracy 1908-6 2749 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  UC34196  Hieracium nudicaule Harley P. Chandler 1901-6-1 1489 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  HSC98079  Hieracium scouleri Cara Witte 2007-7-3 407 Humboldt White Oak Opening 1242 Comment
  RSA156091  Hierochloe occidentalis W. A. Silveus 1938-7-9 2960 Humboldt Dyerville. Comment
  UC1103736  Hierochloe occidentalis Joseph P. Tracy 1921-3-20 5423 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  CAS-BOT-BC280738  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC33769  Holcus lanatus Lon Hall 1975-5-24 378 Humboldt Samoa Dunes, off Samoa Blvd., across from the boat landing Comment
  HSC58657  Holcus lanatus G. L. Clifton 1979-7-31 11851 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA22954  Holcus lanatus A. C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UCD84850  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  BLMAR686  Holodiscus discolor Jennifer Wheeler 2013-6-25 686 Humboldt King range, Strawberry Rock 62 Comment
  HSC45476  Holodiscus discolor Maralyn O'Meara 1974-7-11 547 Humboldt Kneeland; Barry Ridge Comment
  HSC57957  Holodiscus discolor G. L. Clifton, Griswold 1979-7-31 11651 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  RSA85262  Holodiscus discolor F. W. Peirson 1926-7-13 8655 Humboldt Near Blue Lake, Mad River. Comment
  UC1198704  Holodiscus discolor Joseph P. Tracy 1911-7-5 3293 Humboldt near mouth of Willow Creek (Northern Coast Ranges, Valley of Trinity River); Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC38426  Hordeum brachyantherum D. E. Anderson, J. P. Smith 1971-6-14 - 1046 Humboldt Along railroad tracks at P.G.&E. power plant S of Eureka. Comment
  HSC58607  Hordeum brachyantherum G. L. Clifton, Griswold 1979-7-25 10949 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  SEINET200844 Image available Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt Mouth of Elk River. 3 Comment
  CDA18214  Hordeum marinum subsp. gussoneanum G. D. Barbe, T. C. Fuller 1974-6-17 1842 Humboldt North Coast Ranges; Shelter Cove, uphill, E of Sail Court. 91 Comment
  UCD85896  Hordeum marinum subsp. gussoneanum A. H. Murphy 1951-6-1 49 Humboldt O. O. Davis Ranch. South slope of South Fork Mtn., 3 miles E of Low Gap. Comment
  HSC103010  Hordeum murinum subsp. murinum J. P. Smith 2014-5-20 13852 Humboldt Samoa Peninsula 6 Comment
  CAS-BOT-BC536629  Horkelia californica Paul F. Covel 1937-7-13 800 Humboldt Cape Fortuna Comment
  HSC79333  Horkelia tridentata var. flavescens D. H. Norris 1970-5-20 12177 Humboldt Crest of Big Hill Rd. E of Hoopa Comment
  HSC57352  Hosackia oblongifolia var. oblongifolia Overton, Butler 1979-7-26 10044 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  HSC69766  Hosackia oblongifolia var. oblongifolia Thomas W. Nelson, Jane P. Nelson 1977-9-3 3732 Humboldt Along old logging rd. just E of Pine Mtn. 1433 Comment
  HSC98310  Hosackia yollabolliensis W. K. Parks Jul 1933 2057 Humboldt On Buck Mtn. Comment
  JEPS1632  Hydrophyllum fendleri var. albifrons Mary H. Manning 1901-6-25 Humboldt Trinity Summit; n Humboldt County Comment
  HSC102178  Hypericum anagalloides M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1091 Humboldt Patterson Meadows 1555 Comment
  HSC56972  Hypericum perforatum Overton, Butler 1979-7-23 9501 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC1198414  Hypericum perforatum Joseph P. Tracy 1932-8-21 10362 Humboldt lower w. foothills of Chaparral Mt. (Three Cabins); Northern Coast Ranges, foothills of Chaparral Mt., Three Cab 457 Comment
  RSA424593A  Hypericum perforatum T. S. Elias, Barbara A. Elias 1987-8-26 10630 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge. Comment
  UCD110368  Hypericum perforatum subsp. perforatum David Board 1920-9-1 s.n. Humboldt Lone Star Ranch, Iaqua. Comment
  CAS-BOT-BC311439  Hypochaeris radicata Doris K. Kildale 1925-7-17 1074 Humboldt Cutten - McDonald Tract - Eureka Comment
  HSC35707  Iliamna latibracteata Thomas W. Nelson, B. Reinhardt 1975-7-30 2091 Humboldt Grouse Creek side of Last Chance Ridge. Comment
  JEPS804  Ipomopsis aggregata Joseph P. Tracy 1932-7-12 10440 Humboldt Corral Prairie Trinity Summit 1584 Comment
  RSA67626  Iris Philip A. Munz 1951-7-15 16546 Humboldt dry slopes in woods, about 3 miles northeast of Willow Creek Comment
  SEINET4170691  Iris douglasiana Unknown 1924-5-25 Humboldt Big Lagoon. 8 Comment
  UC162596  Iris douglasiana Joseph P. Tracy 1911-6-4 3215 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  HSC32383  Iris douglasiana Linda M. Barker 1974-5-11 185 Humboldt Redwood National Park, W of Bald Hills Rd., NW of Gans Prairie 366 Comment
  RSA135872  Iris douglasiana Lee W. Lenz, E. K. Balls 1955-5-15 20742 Humboldt 2 miles southeast of Petrolia, along Old Coast Road to Ettersburg 122 Comment
  RSA136681  Iris douglasiana Lee W. Lenz, E. K. Balls 1951-5-8 16508 Humboldt 14.7 miles north of Trinidad, Highway 101 6 Comment
  UC667112  Iris douglasiana Joseph P. Tracy 1935-6-23 14001 Humboldt e of Orick (Bald Hills Road) 609 Comment
  UC1196390  Iris macrosiphon Joseph P. Tracy 1940-5-17 16547 Humboldt McClellan Mt. 762 Comment
  UC719144  Iris macrosiphon F. G. Meyer 1938-4-6 1390 Humboldt about 10 mi n Garberville Comment
  RSA135821  Iris purdyi E. K. Balls 1957-5-25 22601 Humboldt 0.2 mile west of Trinity-Humboldt County line, along State Highway 36 732 Comment
  RSA135936  Iris purdyi Lee W. Lenz, E. K. Balls 1952-5-11 17192 Humboldt 3.2 miles northeast from Harris on road from Zenia and Alder-point to Garberville Comment
  RSA137352  Iris purdyi Lee W. Lenz, E. K. Balls 1955-5-16 20744 Humboldt 2.7 miles northwest of Ettersburg along old Coast Road, Garbersville to Ferndale 457 Comment
  UC1174772  Iris purdyi L. W. Lenz and E. K. Balls 1952-5-11 17191 Humboldt 5.2 mi n Harris (on road to Zenia, 10.1 mi sw from Trinity-Humboldt Co. line) Comment
  UCD138800  Iris purdyi R. N. Raynor 1935-2-22 s.n. Humboldt Fort Seward. Comment
  HSC63123  Iris tenax subsp. klamathensis M. A. Baker 1979-5-17 731 Humboldt Along Wilson Creek, just E of FS Rd. 15N01 Comment
  HSC65229  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-1 444 Humboldt 3.6 mi. N of Orleans on FS Rd. 15N01 Comment
  HSC101964  Iris tenuissima M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 859 Humboldt Patterson Meadows 1566 Comment
  HSC74329  Iris tenuissima M. A. Baker 1980-6-16 1958 Humboldt Near Onion Mtn. 1280 Comment
  RSA135919  Iris tenuissima Lee W. Lenz, E. K. Balls 1956-6-12 21664 Humboldt 9.1 miles northeast from Blue Lake, U.S. Highway 299 488 Comment
  RSA135920  Iris tenuissima Lee W. Lenz, E. K. Balls 1955-5-15 20734 Humboldt 15.8 miles southeast along U.S. Highway 299 from Willow Creek, towards Arcata 579 Comment
  UCD115205  Isatis tinctoria S. S. Tillett 1956-7-6 606 Humboldt Above Klamath River, along Ishi Rish Road, 1 mi. n. of Orleans. 167 Comment
  JEPS93174  Isolepis cernua Margriet Wetherwax and Kevin Downing 1993-8-9 2454 Humboldt s side of slough just past Pigeon Point (e side of road, near Bayside Rd and Myrtle, e side of bay, just n of Eureka); Humboldt Bay, Eureka Slough 5 Comment
  POM185720  Isolepis cernua Joseph P. Tracy 1917-6-10 4821 Humboldt Eureka. 0 Comment
  HSC5881  Jaumea carnosa David K. Smith 1968-11-9 55 Humboldt Along E edge of Humboldt Bay, 1 mi. S of Arcata Comment
  UC275455  Jaumea carnosa Joseph P. Tracy 1927-8-2 7222 Humboldt Big Lagoon Northern Coast Range 6 Comment
  UC1103671  Juncus bufonius var. bufonius Joseph P. Tracy 1914-5-14 4440 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UC1152113  Juncus capitatus Joseph P. Tracy 1948-6-13 18045 Humboldt at the former Will Perry Place Dobbyn Creek 152 Comment
  HSC98602  Juncus effusus Cara Witte 2007-6-28 383 Humboldt FS Road 5N10. Approximately 0.5 mi E of intersection with National Forest 1. 1426 Comment
  JEPS66996  Juncus effusus subsp. pacificus W. L. Jepson 1936-8-17 17908 Humboldt 2 mi s Fields's Landing (near Still's Ranch) Comment
  BLMAR659  Juncus effusus subsp. pacificus Andrew Maguire 2012-7-19 659 Humboldt Lacks Creek, Faulkner prairie 894 Comment
  RSA246804  Juncus ensifolius Robert F. Thorne, Percy C. Everett 1965-8-7 35174 Humboldt Big Lagoon. 2 Comment
  UC14900  Juncus ensifolius J. P. Tracy 1901-7-29 1224 Humboldt immediate vicinity Eureka 0 Comment
  HSC57093  Juncus exiguus Walter Overton, Marvin Butler 1979-7-24 9815 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  RSA168868  Juncus falcatus var. falcatus Joseph P. Tracy 1938-7-6 16019 Humboldt Big Lagoon Comment
  HSC57015  Juncus laccatus Walter Overton, Marvin Butler 1979-7-24 9621 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC45545  Juncus lescurii J. P. Smith 1971-10-6 4975 Humboldt End of Murray Rd. in McKinleyville. Comment
  JEPS63886  Juncus patens W. L. Jepson 1936-8-11 17871 Humboldt Phillipsville South Fork Eel River Comment
  HSC43841  Juncus regelii Maralyn O'Meara 1974-7-11 530 Humboldt Kneeland, Barry Ridge along private road Comment
  RSA44475  Juncus tenuis Henry M. Pollard 1948-7-21 s.n. Humboldt Near Orleans. Comment
  SEINET11789825  Juncus tenuis J. P. Tracy 1937-1 15609 Humboldt near Blue Lake, along Mad River 15 Comment
  HSC57907  Juncus xiphioides Gilbert Muth 1979-7-31 11509 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  HSC20979  Keckiella corymbosa John Warner Hosking 1968-10-10 Humboldt Hwy. 299, 30 mi. W of Willow Creek Comment
  HSC23720  Keckiella corymbosa Tim Baroni 1971-7-5 96 Humboldt W bank of the Mattole River Comment
  HSC73764  Keckiella corymbosa Gail Newton 1980-7-23 1743 Humboldt Near Packsaddle Ridge 1463 Comment
  RSA43878  Keckiella corymbosa H. M. Pollard 1948-8-12 s.n. Humboldt Perch Creek near Orleans. Comment
  NY790273  Keckiella corymbosa W. C. McCalla 1935-7-29 4253 Humboldt Open valley of Eel River Comment
  UC162570  Kickxia elatine Joseph P. Tracy 1911-7-11 3508 Humboldt Hoopa Valley; Northern Coast Ranges 152 Comment
  RSA246668  Kickxia elatine Robert F. Thorne, Percy C. Everett 1965-8-8 35262 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  CAS-BOT-BC499191  Kopsiopsis strobilacea C. Young 1967-5-15 s.n. Humboldt Orleans Comment
  UC479390  Lactuca biennis Marcus E. Jones, A. M. 1931-7-14 29090 Humboldt s Eureka Comment
  UC1223228  Lactuca serriola Joseph P. Tracy 1949-8-8 18403 Humboldt at Willow Creek (Frank Graham's orchard); Trinity River Valley 152 Comment
  UC1239535  Lactuca serriola Joseph P. Tracy 1934-8-14 13577 Humboldt Holmes Flat North Coast Ranges, Holmes Flat 60 Comment
  CAS-BOT-BC349841  Lactuca tatarica subsp. pulchella Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  UC668198  Lagophylla ramosissima Joseph P. Tracy 1938-7-4 15993 Humboldt Valley of South Yager Creek 762 Comment
  CAS-BOT-BC337991  Lasthenia californica Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  UC166288  Lasthenia californica subsp. californica Joseph P. Tracy 1908-6-8 2628 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1199133  Lasthenia californica subsp. californica Joseph P. Tracy 1925-5-17 6987 Humboldt at Berry's, Redwood Creek Northern Coast Ranges, Redwood creek 274 Comment
  UCD107019  Lathyrus cicera Joseph P. Tracy 1942-6-15 17133 Humboldt at Englewood near Redcrest resort. 91 Comment
  HSC14707  Lathyrus glandulosus Lincoln Constance 1934-6-8 837 Humboldt S Fork Eel River, Cow Creek Fire Trail, from Bull Creek Rd., N over the divide, into the headwaters of Bear Creek. Comment
  UC1199083  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1922-4-30 6010 Humboldt near The South Fork; Trinity River Valley 182 Comment
  UCD106376  Lathyrus littoralis Linda M. Barker 1976-5-13 1489 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA165870  Lathyrus littoralis P. A. Munz 1963-6-13 24525 Humboldt Coastal Strand at Sammoa. Comment
  HSC97937  Lathyrus nevadensis subsp. nevadensis Cara Witte 2007-5-31 148 Humboldt Along National Forest 1. Approximately 1 mile south of 4E27. 1489 Comment
  CAS-BOT-BC205042  Lathyrus palustris Doris K. Kildale 1926-6-25 2177 Humboldt Big Lagoon Comment
  UC1222411  Lathyrus polyphyllus Joseph P. Tracy 1948-7-11 18074 Humboldt along Trinity Highway Willow Creek Canyon Comment
  UC1199071  Lathyrus vestitus Joseph P. Tracy 1901-6-2 1120 Humboldt immediate vicinity Eureka 0 Comment
  UC931760  Lathyrus vestitus C. L. Hitchcock 1949-6-8 19087 Humboldt 1 mi se Willow Creek (along Highway 299) Comment
  HSC81966  Lathyrus vestitus subsp. bolanderi Thomas W. Nelson, Jane P. Nelson 1979-7-3 4942 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  RSA0008480  Layia carnosa Jennifer Wheeler 2010-5-6 568 Humboldt West of Arcata, Samoa Peninsula outer Humboldt Bay north of Manila 0 Comment
  SEINET3147912  Layia carnosa W. C. Blasdale 1896-6-2 sn Humboldt West Eureka Comment
  UC153946  Layia carnosa Joseph P. Tracy 1910-4-24 3121 Humboldt Humboldt Bay Comment
  UC1199156  Layia gaillardioides Joseph P. Tracy 1927-6-18 8182 Humboldt Cape Mendocino 3 Comment
  UC127639  Layia gaillardioides J. Burtt Davy 1899-7-30 6192 Humboldt Comment
  SEINET3374979 Image available Lemna minor Joseph P. Tracy 1932-8-21 10370 Humboldt Three Cabins Ranch; on E side of Mad River on W slope of Chaparral Mt. 457 Comment
  HSC36107  Lemna minor Neil D. Ledet 1973-11-29 7 Humboldt 16 mi. S of Ferndale, N side of Cape Town along county Rd., floating on ranch pond Comment
  UC1223216  Leontodon saxatilis Joseph P. Tracy 1948-7-11 18072 Humboldt at Lack Pond Comment
  UC1199163  Lepidium densiflorum Joseph P. Tracy 1938-7-15 16066 Humboldt Mouth of Eel River 3 Comment
  POM17172  Lepidium didymum J. B. Feudge 1923-7-22 67 Humboldt Fortuna. 15 Comment
  UC1245362  Lepidium heterophyllum Mrs. Archie Cathey Jul 1933 Humboldt near Miranda (at Cathey Ranch) 304 Comment
  UC492270  Lepidium nitidum Joseph P. Tracy 1932-4-24 9809 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  UC161491  Lepidium strictum Joseph P. Tracy 1911-7-1 3276 Humboldt near Hydesville (at Carlotta); Northern Coast Region, Carlotta 60 Comment
  UC1199161  Lepidium virginicum Joseph P. Tracy 1916-5-31 4690 Humboldt Holmes Flat, along Eel River from South Fork to Scotia Northern Coast Ranges, Eel River 60 Comment
  HSC74229  Leptosiphon ciliatus M. A. Baker 1980-7-15 2958 Humboldt Near Whiting Ridge. 1341 Comment
  HSC97990  Leptosiphon ciliatus subsp. ciliatus Cara Witte 2007-7-8 431 Humboldt Board Camp Mountain. Pack trail 4E26. 1463 Comment
  UC1225825  Leptosiphon latisectus Joseph P. Tracy 1948-6-13 18048 Humboldt 2 mi n Harris 609 Comment
  CAS-BOT-BC341822  Lessingia nemaclada James T. Vale 1979-7-26 s.n. Humboldt Elk Creek Comment
  BLMAR263  Leucanthemum vulgare Jennifer Anthony-Wheeler 1999-6-16 263 Humboldt Headwaters Forest Reserve, On trail to ' Scar rd ' 487 Comment
  HSC74476  Lewisia cotyledon Gail Newton 1980-7-24 1762 Humboldt Near Somes Mtn. 1615 Comment
  RSA298334  Lewisia cotyledon Marc Baker 1980-7-24 378155 Humboldt F of Salmon quad, Orleans Mtsn. 73 Comment
  POM266015  Lewisia cotyledon var. howellii Lincoln Constance, Reed C. Rollins 1942-5-12 s.n. Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec. 152 Comment
  HSC72875  Lewisia nevadensis M. A. Baker 1980-6-8 1905 Humboldt Near Buck Flat. 1554 Comment
  UC184878  Leymus X vancouverensis Joseph P. Tracy 1912-7-7 3744 Humboldt Eureka Northern Coast Region (bay shore) 0 Comment
  RSA129556  Leymus mollis subsp. mollis H. S. Yates 1936-6-18 5727 Humboldt Near mouth of Little River 5 Comment
  UC526800  Leymus triticoides Joseph P. Tracy 1929-6-3 8601 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1197176  Ligusticum apiifolium J. P. Tracy 1906-11-4 2554 Humboldt immediate vicinity Eureka (Rick's Prairie); Rick's Prairie 0 Comment
  CAS-BOT-BC436493  Ligusticum apiifolium Joseph P. Tracy 1909-8-29 3084 Humboldt Humboldt Bay, near top of Humboldt Hill 152 Comment
  HSC74437  Ligusticum californicum Gail Newton 1980-8-10 2068 Humboldt Near Blake Mtn. 1707 Comment
  SFV18580  Ligusticum californicum T. W. Nelson, J. P. Nelson 1987-6-11 8556 Humboldt Along Forest Road 13N01, 0.25 miles south of turn off to Onion Lake. 1098 Comment
  HSC38445  Lilaeopsis occidentalis J. P. Smith 1976-7-3 8937 Humboldt Manila, Samoa Peninsula Comment
  HSC21523  Lilaeopsis occidentalis E. Hunt 1949-5-18 21 Humboldt Humboldt Bay Comment
  HSC89328  Lilium columbianum E. Mackey 1986-6-16 Humboldt Patrick's Point State Park, near Ceremonial Rock Comment
  HSC15575  Lilium kelloggii D. E. Anderson 1962-7-14 2250 Humboldt 2 mi. W of Kneeland Post Office Comment
  CAS-BOT-BC130684  Lilium occidentale M. Louise Hutchinson 1913-6-1 s.n. Humboldt Eureka Comment
  CAS-BOT-BC130686  Lilium occidentale Doris K. Kildale 1925-6-30 1337 Humboldt On road to Humboldt Country Club 7 mi from Eureka Comment
  UC176167  Lilium occidentale Joseph P. Tracy 1912-9-1 3982 Humboldt Eureka Northern Coast Region (near Ryan's Slough Hill) 0 Comment
  HSC79265  Lilium rubescens D. K. Imper 1983-7-12 Humboldt Along USFS Rd. 10N14, 2 mi. N of jct. with 13N01, N of Blue Lake. Also noted 1 mi. N on 13N01, .2 mi. N of jct. with 10N14 762 Comment
  CAS-BOT-BC133010  Lilium washingtonianum subsp. purpurascens Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1676 Comment
  HSC98854  Lilium washingtonianum subsp. purpurascens Cara Witte 2008-7-11 872 Humboldt National Forest 1. 1/2 mile south from intersection with Forest Service Road 6N01B. 1575 Comment
  CHSC19733  Limnanthes douglasii D. E. Anderson 1965-5-8 3634 Humboldt About 4 miles east of Berry Summit, along Hw. 299. Roadside ditch. Comment
  HSC83032  Limonium californicum A. L. Eicher 1985-8-17 Humboldt Marsh bordering Humboldt Bay, 0.2 mi. S of the mouth of Jacoby Creek. 1 Comment
  RSA246709  Limonium californicum Robert F. Thorne, Percy C. Everett 1965-8-7 35211 Humboldt Samoa Peninsula. 0 Comment
  UC1197835  Linanthus nuttallii subsp. nuttallii Joseph P. Tracy 1933-8-6 12939 Humboldt French Camp Ridge 1066 Comment
  CDA6372  Linaria vulgaris B. F. Kemp Jun 1946 Humboldt Eureka. 0 Comment
  UC524126  Linaria vulgaris Ira L. Wiggins 1932-7-19 5890 Humboldt near Trinidad Head Comment
  HSC20667  Linaria vulgaris H. E. Parks, S. T. Parks Aug 1943 22239 Humboldt Along Hwy., Stone Lagoon 15 Comment
  HSC100707  Linnaea borealis Carl C. Marshall Jun 1886 258 Humboldt E of Hoopa. Comment
  RSA20849  Linum angustifolium Carl B. Wolf 1937-6-18 8889 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  HSC89417  Linum bienne P. A. Daly 1986-1-20 46 Humboldt Trinidad Head, along trail 61 Comment
  SD42239  Linum lewisii Carl B. Wolf 1937-6-18 8889 Humboldt Table Bluff, between Humboldt Bay and Eel River. 29 Comment
  SEINET12185780  Linum micranthum J. P. Tracy 1950-1 18994 Humboldt on the Albee Rd., Buck Mountain, high meadow on W side, 3 mi S of Burr Valley 1158 Comment
  UC161076  Linum usitatissimum Joseph P. Tracy 1911-6-11 3236 Humboldt near Trinidad; Northern Coast Ranges 60 Comment
  RSA12555  Listera caurina Carl B. Wolf 1934-7-2 5884 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  UC1103026  Listera cordata Joseph P. Tracy 1924-5-11 6687 Humboldt Bull Creek Flat Northern Coast Ranges 91 Comment
  HSC37160  Listera cordata var. nephrophylla J. D. Ackerman 1976-2-29 750 Humboldt 1 mi. E of old Hwy. 299 junction with Korbel, Simpson Demonstration Forest Comment
  HSC59489  Listera cordata var. nephrophylla M. A. Ericksen 1979-4-28 220 Humboldt Near roadside leading to Camp Bouer, Korbel Comment
  POM270405  Lithocarpus densiflorus var. densiflorus Lyman Benson 1929-7-19 1869 Humboldt Dry slope west of Bull Creek. Comment
  RSA293190  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson, Jane P. Nelson 1978-2-5 3760 Humboldt Kneeland, east side of junction of Kneeland & Maple Creek roads. 671 Comment
  HSC81535  Lithophragma affine Thomas W. Nelson, Jane P. Nelson 1980-5-25 5258 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  JEPS20905  Logfia filaginoides Joseph P. Tracy 1921-5-30 5489 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC163597  Lolium multiflorum Jos. Burtt Davy 1899-5 5556 Humboldt Scotia Comment
  HSC90681  Lolium perenne Gail Newton 1982-6-10 3590 Humboldt Elk River Wildlife Area, Eureka Comment
  UC188800  Lolium temulentum Jos. Burtt Davy 1899-7-30 6205 Humboldt Russ Ranch Comment
  UC50698  Lolium temulentum Joseph Burtt Davy 1899-6-20 5690 Humboldt Hupa Valley Comment
  SEINET5527019 Image available Lomaria spicant Hicks, Carpenter 1977-7-12 Humboldt Orick Comment
  SEINET200763  Lomatium ciliolatum Joseph P. Tracy 1930-7-10 8869 Humboldt Brannan mountain Comment
  HSC32283  Lomatium ciliolatum var. ciliolatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5619 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC24400  Lomatium dasycarpum subsp. dasycarpum J. O. Sawyer 1970-6-24 2223 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC32939  Lomatium dissectum var. dissectum Thomas W. Nelson, James Nelson 1973-5-28 953 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS16237  Lomatium dissectum var. dissectum Joseph P. Tracy 1913-6-20 4237 Humboldt lower foothhills of Buck Mt. (on its n.w. slope); Northern Coast Ranges, Buck Mt. 762 Comment
  UC183629  Lomatium dissectum var. dissectum Joseph P. Tracy 1913-6-20 4237 Humboldt lower foothills on n.w. slope Buck Mt.; Northern Coast Ranges, Buck Mt. 762 Comment
  HSC50942  Lomatium macrocarpum G. L. Clifton, Overton 1979-6-3 3765 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  HSC97232  Lomatium macrocarpum Kiera Freeman, Heather J. Perry 2007-6-4 1 Humboldt Cold Springs Camp, 8.0 mi. S of Hwy. 299 on NF1 1372 Comment
  JEPS14256  Lomatium macrocarpum Joseph P. Tracy 1933-7-25 12894 Humboldt Grouse Mt. 1524 Comment
  RSA167441  Lomatium nudicaule Joseph P. Tracy 1951-6-26 19573 Humboldt Twin Lakes vicinity Comment
  HSC46923  Lomatium tracyi Brad Klipfel 1974-5-27 381 Humboldt Horse Mtn. Comment
  HSC74488  Lomatium triternatum M. A. Baker 1980-6-26 2400 Humboldt Near Sims Creek 610 Comment
  HSC32917  Lomatium utriculatum Thomas W. Nelson, James Nelson 1973-5-28 965 Humboldt McKeown Ranch N of Dinsmore Comment
  UCSB25050  Lonicera hispidula Keefe, Joseph 1967-7-8 Humboldt Bank of Ell River, Miranda turnoff, 12.4 miles north of Garberville on U.S. Highway 101 170 Comment
  HSC72627  Lonicera hispidula var. vacillans J. P. Smith, J. O. Sawyer 1977-7-1 Humboldt Six Rivers National Forest, Bluff Creek Campground. 76 Comment
  UCD39986  Lonicera hispidula var. vacillans Rodney Gale Myatt 1971-9-22 1199 Humboldt Along Salmon River, southeast of Somes Bar, and northeast of Hoopa Reservation. 426 Comment
  UCSB15522  Lonicera involucrata Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  CAS-BOT-BC241494  Lonicera involucrata var. ledebourii Carl B. Wolf 1927-8-22 770 Humboldt Big Lagoon Comment
  CAS-BOT-BC241496  Lonicera involucrata var. ledebourii Huron H. Smith 1911-6-4 3801 Humboldt Trinidad Comment
  HSC31630  Lonicera involucrata var. ledebourii Glenn McGourty 1974-8-27 16 Humboldt About 1 mi. from Capetown bridge. Comment
  HSC3927  Lonicera involucrata var. ledebourii H. E. Parks May 1936 5675 Humboldt Spruce Cove, Trinidad. Comment
  HSC62897  Lonicera involucrata var. ledebourii J. M. DiTomaso 1979-4-1 836 Humboldt 3 mi. S of Arcata, on Samoa Rd. Comment
  HSC97445  Lonicera involucrata var. ledebourii Ivy Watson 2008-10-11 57 Humboldt Near Mad River mouth, S bank, just above high tide line. Comment
  LA205886  Lonicera involucrata var. ledebourii Harlan Lewis; 1940-7-3 sn Humboldt Dry Lagoon State Park, edge of lagoon Comment
  HSC25291  Lotus corniculatus R. Spellenberg 1964-6-15 409 Humboldt 0.5 mi. S of Humboldt Hill exit, 5 mi. S of Eureka Comment
  HSC38494  Lotus humistratus D. E. Anderson, J. P. Smith 1971-6-18 - 1092 Humboldt Horse Mtn. Comment
  UC162804  Lotus humistratus Joseph P. Tracy 1906-7-4 2531 Humboldt near Hydesville; Northern Coast Region, Yager Creek 60 Comment
  SEINET12154222  Lotus nevadensis var. douglasii H. P. Chandler 1901-1 1487 Humboldt Klamath R 427 Comment
  JEPS55459  Lotus nevadensis var. nevadensis Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  UC162848  Lotus nevadensis var. nevadensis Joseph P. Tracy 1908-6 2913 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 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
  UC1197287  Lotus purshianus var. purshianus Joseph P. Tracy 1912-6-30 3713 Humboldt Eureka Northern Coast Region 0 Comment
  UC168985  Lotus purshianus var. purshianus Joseph P. Tracy 1912-7-24 3807 Humboldt Eureka Northern Coast Region 0 Comment
  UC170028  Lotus purshianus var. purshianus Joseph P. Tracy 1912-8-3 3964 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 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
  UC204647  Lotus scoparius Joseph P. Tracy 1918-7-6 5048 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  SEINET200587 Image available Lotus scoparius var. scoparius Joseph P. Tracy 1918-7-6 5048 Humboldt South fork of Eel River near the Humboldt-Mendocino county line 152 Comment
  UCR25843  Lotus uliginosus David Edwards 1974-8-12 84 Humboldt N side of 7th Street, just west of its overpass of U.S. Hwy 101, Arcata. 18 Comment
  UC1197298  Lotus wrangelianus Joseph P. Tracy 1918-7-1 4978 Humboldt 3 mi s Point of Cape; Northern Coast Ranges, Cape Mendocino 3 Comment
  UC1197303  Lotus wrangelianus Joseph P. Tracy 1927-6-18 8178 Humboldt on road from ocean towards Petrolia; Northern Coast Ranges, Cape Mendocino 30 Comment
  UC1565794  Lotus yollabolliensis R. Spellenberg 1990-7-9 10230 Humboldt ca 1 mi n Blake Mtn. (extreme e edge of county, 7 air mi wnw of Hyampom, 40 mi s of Calif. Hwy. 299 and Berry Summit on USFS Rd 1); South Fork Mountain 1767 Comment
  HSC49990  Luina hypoleuca M. A. Baker 1979-6-6 776 Humboldt N facing slope near to road to Hospital Mt. 610 Comment
  SEINET10488353  Lupinus affinis Charles Piper Smith 1948-5-10 Smith 48248 Humboldt Hwy 101. 0.2 Miles s of miranda Comment
  UC1223274  Lupinus albicaulis var. shastensis Joseph P. Tracy 1940-7-14 16687 Humboldt Wilder Ridge Comment
  UC503004  Lupinus albicaulis var. shastensis Joseph P. Tracy 1932-6-14 10161 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC146921  Lupinus albifrons var. albifrons Harley P. Chandler June, 1901 1424 Humboldt Weitchpek North Coast Ranges, Klamath River (Klamath River) 304 Comment
  HSC60073  Lupinus albifrons var. flumineus M. A. Baker 1978-5-6 498 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  HSC44522  Lupinus andersonii Brad Klipfel 1973-7-1 129 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SD81280  Lupinus arboreus Darley F. Howe 1969-5-30 4586 Humboldt 2.4 miles south of Orick on Hwy 101, fresh-water lagoon Comment
  UCR122384  Lupinus arboreus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6999 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  SEINET10452624  Lupinus arboreus Mary Susan Taylor 1990-8-22 Taylor 6070 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  UC150119  Lupinus bicolor Harley P. Chandler May, 1901 1094 Humboldt Scotia; North Coast Ranges, Scotia 60 Comment
  HSC45091  Lupinus bicolor R. Sutherland 1978-4-23 1 .23478 Humboldt Head of Kinsey (Fraser) Ridge 716 Comment
  POM10720  Lupinus latifolius subsp. viridifolius H. P. Chandler 1901-06 13658 Humboldt Klamath River. 152 Comment
  UC1299159  Lupinus lepidus var. lobbii Freed W. Hoffman 1949-7-16 2830 Humboldt in Mt. Lassic area on Pine Mountain (eastern Humboldt County); North Coast Ranges, Mt. Lassic area, Pine Mountain 1524 Comment
  UCD107971  Lupinus littoralis Linda M. Barker 1976-7-5 1642 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC150137  Lupinus littoralis Joseph P. Tracy 1911-11-5 3556 Humboldt Ocean Beach Humboldt Bay; Northern Coast Region, Ocean Beach at Humboldt Bay Comment
  RSA0084061  Lupinus obtusilobus Jane P. Nelson 1974-5-27 1318 Humboldt Mendocine National Forest near Mendocino Pass. 1524 Comment
  UC502994 Image available Lupinus tracyi Joseph P. Tracy 1932-7-15 10598 Humboldt ridges e Corral Prairie; Klamath Mountains; ridges E of Corral Prairie, Trinity Summit, Klamath Mts., Humboldt Co. 1828 Comment
  HSC14891  Lupinus variicolor R. I. Bonn 1965-5-9 42 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  RSA167382  Lupinus variicolor Joseph P. Tracy 1938-7-11 16046 A Humboldt Brainards Point, sandy soil along highway between Eureka and Arcata. Comment
  HSC74014  Luzula comosa R. York 1980-5-23 625 Humboldt Near Buck Mtn. 1524 Comment
  HSC98044  Luzula comosa Cara Witte 2007-5-31 163 Humboldt Buck Flat. Intersection of National Forest 1 and 5N01. 1547 Comment
  UC1103681  Luzula comosa Joseph P. Tracy 1906-5-20 2460 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  HSC40967  Luzula comosa Linda M. Barker 1976-6-14 1596 Humboldt 3 mi. W of Arcata, Lanphere Dunes Comment
  CAS-BOT-BC499137  Luzula macrantha Peter F. Zika 2011-7-3 25497 Humboldt Titlow Hill Road, 3.7 road miles SE of Rte 299 at Berry Summit, 1 air km SSW of Horse Mountain 1310 Comment
  SEINET11785711  Luzula multiflora H. E. Parks, Tracy, J. P. 1947-1 11643 Humboldt McKay Camp, South Fork Mountain 1676 Comment
  LA205865  Lycopodiella inundata Lawrence L. Kiefer; D. Branscomb 1964-5-20 1436 Humboldt Big Lagoon State Park 15 Comment
  CAS-BOT-BC61930  Lycopodium clavatum Ethel Wickes 1923-3-1 s.n. Humboldt unspecified Comment
  RSA575148  Lycopodium clavatum S. Shushan 1978-8-4 3 Humboldt East of Blue Lake. Comment
  CHSC57533  Lysichiton americanus Michelle Y. Wagner 1990-4-10 16 Humboldt Hope Creek Trail; 5 miles n of Orick. Damp ravine on w side of Hwy 101. 152 Comment
  JEPS90109  Lysichiton americanus H. S. Yates 1936-6-18 5729 Humboldt near mouth of Little River Little River 4 Comment
  UCSB12371  Lysichiton americanus Dearing, Hugh; Dearing, Margaret 1939-5-25 Humboldt Near Samoa Comment
  RSA137264  Lysichiton americanus I. L. Wiggins 1957-6-19 14130 Humboldt East side of highway, Trinidad. Comment
  UC1222701  Lysichiton americanus Joseph P. Tracy 1950-7-6 18992 Humboldt lower end of Burr Valley Comment
  HSC90841  Lythrum hyssopifolia Leonel Arguello 1989-6-10 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, at the end of the Fernstrom-Root trail, along W border of the salt marsh. Comment
  HSC38099  Madia exigua Thomas W. Nelson, James Nelson 1976-5-30 2622 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC343031  Madia gracilis David D. Keck 1944-7-11 5500 Humboldt Halfway between Upper Mattole and Honeydew, 12.3 miles S.E. of Petrolia, Mattole River 121 Comment
  HSC57180  Madia gracilis Griswold, Butler 1979-7-10 6211 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  JEPS7503  Madia gracilis Joseph P. Tracy 1937-7-29 15596 Humboldt w slope near top South Fork Mountain (at Hyampom Trail) 1676 Comment
  HSC35609  Madia gracilis Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2021 Humboldt Beside Bald Hills Rd. 1 mi. E of Redwood National Park Comment
  JEPS40333  Madia gracilis Lincoln Constance 1934-5-24 625 Humboldt s slope Lower Look Prairie; South Fork Eel River, Bull Creek Region 121 Comment
  POM54277  Madia gracilis subsp. gracilis M. H. Manning 1902-06 s.n. Humboldt Hupa Comment
  CAS-BOT-BC343590  Madia sativa J. Clausen 1932-9-18 678 Humboldt 11 miles south of Ferndale on the road to Capetown Comment
  CDA8284  Madia sativa T. C. Fuller 1958-6-17 594 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  HSC37970  Madia sativa Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  JEPS7506  Madia sativa Joseph P. Tracy 1927-6-18 8176 Humboldt sw slope slopes fronting the ocean 3 mi s point of cape; Northern Coast Ranges, Cape Mendocino 3 Comment
  CHSC2299  Maianthemum dilatatum M. Anthony 1960-5-14 Humboldt Arcata. Comment
  CAS-BOT-BC508518  Maianthemum dilatatum Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC15599  Maianthemum dilatatum D. B. Bader 1963-5-1 43 Humboldt Second of the Clam Beach lagoons N end, W of Hwy. 101 Comment
  HSC97576  Maianthemum stellatum Cara Witte 2007-5-29 134 Humboldt Along National Forest 1. Approximately 1/2 mile south of White Oak Opening. 1251 Comment
  HSC45240  Maianthemum stellatum Thomas W. Nelson, Jane P. Nelson 1977-6-19 3509 Humboldt Alder Springs 1524 Comment
  RSA183522  Maianthemum stellatum D. E. Anderson 1965-5-8 3630 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along highway 299. Comment
  HSC58709  Malacothrix floccifera Griswold, Butler 1979-7-12 7241 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC34160  Malacothrix floccifera Hy-Am Pum 1888-7-23 Humboldt Comment
  HSC38075  Marah oregana Thomas W. Nelson, James Nelson 1976-5-30 2632 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC7032  Marah oregana G. N. Bos 1965-5-15 268 Humboldt 2 mi. W of Berry Summit along U.S. 299. 701 Comment
  UC1197775  Marah oregana Joseph P. Tracy 1923-6-20 6313 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  UC1198476  Marah oregana Joseph P. Tracy 1927-6-8 8109 Humboldt Trinidad Northern Coast Ranges 60 Comment
  UC249510  Marah oregana Joseph P. Tracy 1922-4-30 6035 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC95680  Marah oregana Steven Lee 2004-4-11 16 Humboldt About 1 mi. N of Scenic Dr., Houda Point. Off of Hwy. 101, Westhaven. Comment
  RSA189731  Marah oregana Noel Holmgren, James L. Reveal 1966-6-8 2661 Humboldt Coast Range, east of Arcata, 1.5 miles south of Korbel. 274 Comment
  UC16095  Medicago polymorpha J. Burtt Davy 1899-6-15 5531 Humboldt around Scotia; North Coast Ranges Comment
  UC1103753  Melica aristata Joseph P. Tracy 1936-8-7 15105 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC1132276  Melica harfordii H. L. Person 1932-5-12 Humboldt 10 mi n Garberville (Redwood Highway); Briceland Quad. Comment
  HSC70484  Melica subulata Gail Newton 1980-7-20 1631 Humboldt Near Bell Swamps. 1426 Comment
  HSC14998  Melilotus albus D. K. Smith 1968-2-2 5 Humboldt On the bank of Crannell Rd. past the bridge Comment
  JEPS63288  Melissa officinalis W. L. Jepson 1932-8-2 16472 Humboldt Dyerville 76 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
  JEPS63445  Mentha suaveolens W. L. Jepson 1936-8-11 17866 Humboldt South Fork Eel River Philipsville (Philipsville); South Fork Eel River Comment
  HSC32553  Mentzelia dispersa Thomas W. Nelson 1973-7-10 1033 Humboldt Humboldt-Trinity Co. line, Mt. Lassic (Signal Pk.) 1790 Comment
  JEPS80895  Menziesia ferruginea B. A. Bohm, K. W. Nichols 1981-5-11 1573 Humboldt Mile 133.12, U. S. Highway 101 Mile 133.12; , U. S. Highway 101 Comment
Read comments
Jul 9 2015
  UC1225906  Menziesia ferruginea Joseph P. Tracy 1947-5-24 17687 Humboldt Big Lagoon 15 Comment
  RSA167437  Micropus californicus Joseph P. Tracy 1947-5-10 17681 Humboldt Near Briceland Comment
  UC180173  Microseris laciniata subsp. leptosepala Joseph P. Tracy 1914-7-5 4564 Humboldt High Prairie Bald Mountain; Northern Coast Ranges, High Prairie on Bald Mountain 1066 Comment
  RSA72856  Microseris leptosepala A. Kellogg, W. G. W. Harford 1868-09 567 Humboldt [Unspecified] Comment
  UC582732  Microseris nutans Joseph P. Tracy 1933-7-9 12653 Humboldt Brannan Mountain North Coast Ranges 1066 Comment
  HSC17187  Microsteris gracilis Elrid H. Spinas 1948-5-15 26 Humboldt Along rd. to Gouse Mtn. Lookout, 1 mi. from Hwy. 299 Comment
  RSA167416  Microsteris gracilis subsp. gracilis Joseph P. Tracy 1950-5-7 18648 Humboldt Valley of South Yager Creek 762 Comment
  UC582708  Mimulus arvensis H. E. Parks and Joseph P. Tracy 1931-5-9 12541 Humboldt near Miranda 60 Comment
  UC1052478  Mimulus aurantiacus var. aurantiacus H. E. and S. T. Parks June 1951 Humboldt near landing, type locality Trinidad Comment
  HSC55989  Mimulus breweri Overton, Butler 1979-7-31 11404 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC56069  Mimulus breweri G. L. Clifton, Griswold 1979-7-31 11735 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC1239052  Mimulus cardinalis Freed W. Hoffman 1949-7-15 3011 Humboldt a little s Blue Ridge (bottom of Mule Slide); North Coast Ranges, Mt. Lassic area Comment
  UC535721  Mimulus cardinalis Eleanor Armstrong 1934-7-23 1140 Humboldt Richardson Grove <South Fork Eel> River 121 Comment
  HSC12696  Mimulus dentatus Jana Kattenhorn 1970-10-28 153 Humboldt Mad River at the mouth of Lindsey Creek. North Bank Rd. off Hwy. 299 Comment
  HSC37368  Mimulus dentatus Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 502 Humboldt Along Lost Man Creek. 38 Comment
  UC1281762  Mimulus dentatus Richard Spellenberg 1965-6-14 1133 Humboldt about 1 1/2 mi e Bayside (on road leading up to Jacoby Creek (Bayside is 2 mi s of Arcata)) Comment
  UCSB15618  Mimulus dentatus Breedlove, Dennis 1961-7-4 Humboldt 8 miles north of Orick on U.S. Highway 101 91 Comment
  UC1011930  Mimulus grandis F. W. Pennell and J. P. Tracy 1940-7-8 26107 Humboldt e Eureka; Freshwater 9 Comment
  HSC20730  Mimulus guttatus J. R. Kahl 1962-5-11 28 Humboldt 2 mi. S of Trinidad along Hyw. 101 Comment
  HSC45271  Mimulus guttatus M. Alcasas 1978-6-3 116 Humboldt On Titlow Hill Rd., 1.3 mi. from Hwy. 299 1463 Comment
  RSA14135  Mimulus guttatus Elmer I. Applegate 1923-9-10 3995 Humboldt Stone Lagoon. Comment
  RSA555245  Mimulus guttatus Robert F. Thorne, Percy C. Everett 1965-8-9 35317 Humboldt Clam Beach County Park: along highway. 3 Comment
  JEPS10795  Mimulus inodorus Joseph P. Tracy 1932-7-16 10610 Humboldt Corral Prairie Trinity Summit 1584 Comment
  JEPS25044  Mimulus inodorus Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  UC1063548  Mimulus inodorus H. L. Person 1932-8-1 Humboldt Korbel Eureka Quadrangle Comment
  UC582713  Mimulus inodorus Joseph P. Tracy 1932-7-16 10610 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC85939  Mimulus kelloggii Susan Carter, Eric May, Sarah McNaull 1987-3-7 7 Humboldt 8 mi. SSE of Salyer on Co. Rd. 447, F.S. Rd. 5N03, trail 6E23; E of South Fork of Trinity River 457 Comment
  HSC102538  Mimulus moschatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1524 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  UC582597  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15597 Humboldt Hyampon Trail South Fork Mountain 1676 Comment
  UC169323  Mimulus nasutus Harley P. Chandler 1901-6-16 1509 Humboldt Somes Bar North Coast Ranges, Klamath River 426 Comment
  UC582442  Mimulus pilosus Joseph P. Tracy 1925-11-1 7300 Humboldt Shively; on river bar 60 Comment
  UC582484  Mimulus pulsiferae Harold E. Parks and Joseph P. Tracy 1934-6-27 11087 Humboldt Grouse Mt. 1432 Comment
  SEINET202012  Minuartia cismontana J. P. Tracy 1948-6-13 18055 Humboldt Ridge top near Harris 914 Comment
  HSC32233  Minuartia douglasii J. O. Sawyer 1970-6-24 2247 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC1223239  Minuartia douglasii Joseph P. Tracy 1950-7-6 18993 Humboldt 2 mi s Burr Valley (on the Albee Rd, Bridgeville to Blocksburg) 1158 Comment
  JEPS51477  Minuartia nuttallii subsp. gregaria P. E. Goddard 1906-6 658 Humboldt Lasseck Peak Comment
  HSC58019  Minuartia pusilla G. L. Clifton 1979-7-31 11821 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC433035  Mitella ovalis C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  HSC98103  Mitella trifida Cara Witte 2007-6-27 366 Humboldt Forest Service Road 5N04. Near Grouse Mountain. Approximately 1/2 mile east of spring. 1561 Comment
  HSC98562  Mitella trifida var. trifida Cara Witte 2008-6-18 739 Humboldt Approximately 1.5 miles north-west of Forest Service Rd. 6N01B. On an unmarked road on right hand side. 1433 Comment
  UC673055  Modiola caroliniana Joseph P. Tracy 1940-10-18 16777 Humboldt Trididad 3 Comment
  HSC97185  Moehringia macrophylla Benjamin Hart, Erin Lonergan 2007-6-13 9 Humboldt 1 mi. E of USFS Rd. NF1 on 5N04 1524 Comment
  UC205476  Mollugo verticillata Joseph P. Tracy 1920-8-15 5363 Humboldt Klamath River at Bluff Creek Bluff Creek; Northern Coast Ranges, Klamath River 152 Comment
  CAS-BOT-BC215566  Monardella odoratissima subsp. pallida 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-BC220260  Monardella sheltonii Henry M. Pollard 1946-8-22 s.n. Humboldt Highway above Ullathorne Riffle, Orleans region Comment
  HSC70686  Monardella villosa Gail Newton 1980-7-15 1573 Humboldt Near Sims Mtn. 1311 Comment
  JEPS62412  Monardella villosa subsp. villosa W. L. Jepson 1932-8-8 16483 Humboldt Grasshopper Peak 1066 Comment
  RSA257008  Moneses uniflora Gary D. Wallace, S. Carlquist, G. Ansley Wallace 1972-6-30 1103 Humboldt Prairie Creek Redwoods St. Pk. near park Hq. Comment
  UC21672  Monotropa hypopitys J. Burtt Davy 1899-6-24 5773 Humboldt Hoopa Valley Comment
  CAS-BOT-BC444804  Montia diffusa Harley P. Chandler 1901-5-1 1271 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  CAS-BOT-BC444806  Montia diffusa Volney Rattan 1875-1-1 s.n. Humboldt Unspecified Comment
  RSA249389  Montia fontana D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5587 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  UC275480  Montia fontana Joseph P. Tracy 1925-3-15 6941 Humboldt Blue slide on Van Duzen River Van Duzen River; Northern Coast Ranges, Blue slide, Van Duzen River 91 Comment
  POM163985  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka Comment
  HSC55193  Montia parvifolia G. L. Clifton, Terry Griswold 1979-8-2 12267 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC162970  Montia parvifolia Joseph P. Tracy 1908-6 2708 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  UC673005  Montia parvifolia Joseph P. Tracy 1933-5-20 12215 Humboldt s of Ferndale (Wild Cat Ridge); Wild Cat Ridge 304 Comment
  HSC47501  Morella californica Sheila Logan 1978-4-10 27 Humboldt Foot of Hiller Ave. at Ocean Rd., Pacific Ocean and Mad River 46 Comment
  JEPS70782  Myosotis latifolia W. L. Jepson 1934-5-7 16685 Humboldt Dyerville Comment
  HSC59201  Myosotis sylvatica Terry Roth 1979-5-20 66 Humboldt Along old logging road that follows Jolly Giant Creek. 79 Comment
  HSC34644  Myosotis sylvatica John Palmer 1975-4-9 295 Humboldt 40 yds. E of intersection of 17th at Bayview St., Arcata Comment
  CAS-BOT-BC101670  Myrica californica Ira L. Wiggins 1930-7-11 4682 Humboldt near Samoa Comment
  HSC77886  Myriophyllum aquaticum Jim McBride 1978-5-11 546 Humboldt McKinleyville, behind Bigfoot Gas Station Comment
  HSC77878  Myriophyllum hippuroides Scott White 1973-10-29 Humboldt Clam Beach pond Comment
  CAS-BOT-BC7179  Myrrhis bolanderi Henry Nicholas Bolander 6525 Humboldt Lambert's Lake Comment
  HSC15608  Narthecium californicum J. P. Tracy 1930-7-17 9003 Humboldt S Fork Mtn. at McKay Camp 1677 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
  HSC6891  Nasturtium officinale Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  UC23649  Navarretia intertexta Harley P. Chandler Jun 1901 1411 Humboldt Klamath River North Coast Ranges 243 Comment
  UC33918  Navarretia intertexta Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5674 C Humboldt Hoopa Mt. North Coast Ranges Comment
  UC1197896  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1933-7-9 12646 Humboldt Brannan Mountain Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC1197900  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1937-8-5 16385 Humboldt near Dinsmore's; Van Duzen River 737 Comment
  UC908640  Navarretia mellita Joseph P. Tracy 1934-7-9 13333 Humboldt 5 mi s Harris 762 Comment
  UCD48697  Navarretia squarrosa H. E. Parks; S. T. Parks 1947-9-1 24442 Humboldt Trinidad, Spruce Cove, Humboldt County. 76 Comment
  UC52878  Navarretia tagetina Chesnut and Drew 1888-7-23 Humboldt Hy-Am-Pum Comment
  HSC13586  Nemophila menziesii Doris K. Kildale 1926-4-11 1762 Humboldt Buck Mtn. Comment
  UC1103814  Nemophila menziesii Joseph P. Tracy 1923-6-24 6358 Humboldt Murphy Ridge Bald Mt., Murphy Ridge (Balt Mt.) 1066 Comment
  HSC13577  Nemophila menziesii var. atomaria J. R. Kahl 1962-3-13 11 Humboldt 2 mi. S of Trinidad along old Hwy. 101 Comment
  HSC13578  Nemophila menziesii var. atomaria D. E. Anderson 1962-3-4 1927 Humboldt About 2 mi. S of Trinidad Comment
  HSC70659  Nemophila parviflora Gail Newton 1980-7-14 1540 Humboldt Near Deadman Ridge 1097 Comment
  UC1245393  Nemophila parviflora Joseph T. Gregory 1933-7-11 364 Humboldt nr Clear Lake (Grouse Mt.); nr Clear Lake, Grouse Mt. 1524 Comment
  UC562591  Nemophila pedunculata Joseph P. Tracy 1927-4-10 7890 Humboldt Berry's North Coast Ranges, Redwood Creek 274 Comment
  CAS-BOT-BC233456  Nicotiana glauca Clare R. Wheeler 1979-8-13 1205 Humboldt Avenue of the Giants, SW Mailliard Grove, Humboldt State Park 152 Comment
  CDA17340  Noccaea fendleri subsp. californica P. Haggard 2004-8-15 PDR 1285929 Humboldt North Coast Ranges; Friday Ridge Rd, Willow Creek. 0 Comment
  HSC47951  Noccaea fendleri subsp. glauca Brad Klipfel 1974-5-27 387 Humboldt Horse Mtn. Comment
  HSC97976  Noccaea fendleri subsp. glauca Cara Witte 2007-7-5 423 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1578 Comment
  HSC54573  Notholithocarpus densiflorus Overton, Butler 1979-7-24 9607 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC41314  Notholithocarpus densiflorus var. echinoides Brad Klipfel 1974-9-2 541 Humboldt Horse Mountain Comment
  HSC69696  Nuphar polysepala R. Kalal 1980-6-1 10 Humboldt Essex Pond 15 Comment
  UC217655  Nuttallanthus texanus J. P. Tracy 1904-7-4 2117 Humboldt immediate vicinity of Eureka 0 Comment
  HSC100629  Nuttallia cerasiformis Carl C. Marshall Apr 1886 161 Humboldt Near Humboldt Bay. Comment
  HSC26343  Oemleria cerasiformis Thomas W. Nelson 1971-4-4 371 Humboldt Beside Hwy. 36 at Dinsmore Comment
  UCD127734  Oenanthe pimpinelloides Joseph P. Tracy 1950-6-23 18874 Humboldt Larrabee Creek, 3 miles north of Blocksburg. 457 Comment
  JEPS15792  Oenanthe sarmentosa Joseph P. Tracy 1924-9-28 6910 Humboldt Centerville Northern Coast Ranges, Centerville 6 Comment
  UC314583  Oenanthe sarmentosa Joseph P. Tracy 1924-9-28 6910 Humboldt Centerville Northern Coast Ranges, Centerville 6 Comment
  CDA38492  Oenanthe sarmentosa Margaret Bellue Jul 1933 s.n. Humboldt [no further data] 0 Comment
  HSC92702  Oenothera wolfii D. K. Imper 1986-9-1 Humboldt 1 mi. S of Clam Beach exit, Hwy. 101, 6 mi. S of Trinidad 12 Comment
  HSC57979  Oreostemma alpigenum var. andersonii G. L. Clifton, Griswold 1979-7-31 11704 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  JEPS26030  Orobanche californica subsp. californica Joseph P. Tracy 1939-8-6 16398 Humboldt Big Lagoon. Comment
  CAS-BOT-BC502775  Orobanche californica subsp. californica J. Clausen 1932-9-18 690 Humboldt About 5 mi S of Cape Mendocino Lighthouse Comment
  UC1197454  Orobanche fasciculata Joseph P. Tracy 1908-6-7 2610 Humboldt Northern Coast Ranges. Butter Valley on Mad River. Comment
  UC1197566  Orthilia secunda Joseph P. Tracy 1940-7-7 16663 Humboldt Grouse Mt. on Friday Ridge 1371 Comment
  UC1222796  Orthocarpus imbricatus Joseph P. Tracy 1951-6-26 19562 Humboldt halfway between Snow Camp and Twin Lakes; halfway between Snow Camp and Twin Lakes Comment
  RSA407951  Orthocarpus purpurascens Francis W. Pennell, Joseph P. Tracy 1940-7-6 26085 Humboldt Table Bluff L.H., W of Lolita. Back of beach. 0 Comment
  HSC96256  Osmorhiza berteroi Kaylea Eickhoff, Cara M. Witte 2005-6-10 7 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1370 Comment
  JEPS14233  Osmorhiza occidentalis Joseph P. Tracy 1935-7-24 14189 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  BLMAR235  Oxalis Jennifer Anthony-Wheeler 1996-9-26 235 Humboldt King range, growing creekside of bear creek btween campgrounds 548 Comment
  UC1130248  Oxalis oregana H. L. Person 1932-8-1 Humboldt Korbel Eureka quad Comment
  UCR275105  Oxalis oregana Charity A. Hartshorn 2016-5-14 37 Humboldt Arcata Community Forest 244 Comment
  HSC83368  Oxalis oregana R. W. Becking 1987-3-23 Humboldt Arcata, HSU campus, by steps behind NRS building Comment
  POM186936  Oxalis oregana Marcus E. Jones 1931-7-14 28949 Humboldt South of Eureka Comment
  SEINET3347653 Image available Oxalis oregana Loran C. Anderson 1949-6-4 Humboldt South of Eureka Comment
  UCSB18740  Oxalis oregana Jensen, Karen 1965-4-15 Humboldt 0.2 miles W of U.S. Highway 101, at Miranda turnoff 91 Comment
  HSC89720  Oxalis pes-caprae Larry Levine, Manuel Pachero, , Robert Murphey 1989-2-24 3 Humboldt HSU campus, garden plot SE of Buck House 40 Comment
  HSC55209  Oxalis trilliifolia Walter Overton 1979-8-1 12336 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC725500  Oxalis trilliifolia A. A. Heller 1923-7-10 13787 Humboldt Humboldt Camp between Scotia and Pepperwood Comment
  UC1145222  Panicum acuminatum var. acuminatum Joseph P. Tracy 1937-8-7 15621 Humboldt e Korbel (hilltops on Russ Ranch); Bald Mountain, Russ Ranch 914 Comment
  UCD88691  Panicum acuminatum var. fasciculatum Joseph P. Tracy 1918-7-5 5014 Humboldt White Thorn Valley. 304 Comment
  UC1103407  Parapholis incurva Joseph P. Tracy 1937-6-5 15328 Humboldt mouth of Little River 3 Comment
  UC1103409  Parapholis incurva Joseph P. Tracy 1950-6-17 18833 Humboldt Eureka Slough Eureka; Eureka Slough 3 Comment
  UC1222446  Parentucellia viscosa H. E. Parks and Joseph P. Tracy 1932-8-13 10348 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  UC162690  Parentucellia viscosa Joseph P. Tracy 1911-7-12 3530 Humboldt Blue Lake; Northern Coast Ranges 60 Comment
  RSA181631  Parentucellia viscosa Doris K. Niles 1950-6-1 7 Humboldt Island in Eel River, Niles field. Comment
  UCD123256  Parentucellia viscosa L. R. Heckard 1960-8-31 1221 Humboldt about 0.5 mile south of Dry lagoon Beach State Park. Comment
  POM126123  Paspalum distichum Joseph P. Tracy, H. E. Parks 1924-8-3 6779 Humboldt Big Lagoon 6 Comment
  RSA44543  Paspalum distichum Henry M. Pollard 1948-7-17 s.n. Humboldt Orleans Comment
  HSC39934  Paxistima myrsinites J. O. Sawyer 1970-6-25 2291 Humboldt 1646 Comment
  UC1239631  Pectocarya penicillata Joseph P. Tracy 1911-7-10 3484 Humboldt near mouth Willow Creek; Valley of Trinity River 152 Comment
  UC1173740  Pellaea brachyptera Joseph P. Tracy 1939-8-16 16423 Humboldt Grouse Mt 1524 Comment
  SEINET13262761  Pellaea densa Unknown 1912-7-26 3849 Humboldt KNEELAND PRAIRIE 762 Comment
  HSC20958  Penstemon anguineus Milo S. Baker 1947-8-10 11911 Humboldt Near end of Forest Rd. from Hoopa towards Trinity Summit 1372 Comment
  HSC56333  Penstemon anguineus Walter Overton, Marvin Butler 1979-8-2 12705 Humboldt Near Grogan Hole, close to the town of Hoopa 1554 Comment
  JEPS7209  Penstemon anguineus Joseph P. Tracy 1932-7-12 10454 Humboldt near Corral Prairie; Trinity Summit, near Corral Prairie 1584 Comment
  UC1198046  Penstemon anguineus Joseph P. Tracy 1933-7-27 12869 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  SDSU10915  Penstemon anguineus D. F. Howe 1964-8-7 3945 Humboldt 6.2 miles from #96 on Mill Creek Road, Hoopa Valley. 1067 Comment
  UC354474  Penstemon azureus var. angustissimus P. E. Goddard 1906-6 666 Humboldt Lasseck Pk. Comment
  UC673098  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1940-5-5 16544 Humboldt Garberville Garberville (on river bar) 152 Comment
  HSC98095  Penstemon laetus subsp. sagittatus Cara Witte 2007-7-3 417 Humboldt Along National Forest 1. 1/4 mile north of Road V. 1268 Comment
  JEPS11631  Penstemon laetus var. sagittatus Joseph P. Tracy 1933-7-25 12827 Humboldt Horse Mountain 1432 Comment
  UC577416  Penstemon newberryi var. berryi Joseph P. Tracy Jul 16-19 1930 8953 Humboldt South Fork Mountain, open glades along summit near Blake lookout Northern Coast Ranges 1737 Comment
  HSC99528  Penstemon procerus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 192 Humboldt Near North Trinity Mtn and Water Dog Lakes, Six Rivers National Forest. 1826 Comment
  UC577408  Penstemon procerus var. brachyanthus Joseph P. Tracy 1932-7-12 10480 Humboldt head of Brett Hole Trinity Summit, head of Brett Hole 1828 Comment
  JEPS7917  Penstemon rattanii Joseph P. Tracy 1906-6-10 2480 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC642256  Perideridia howellii Joseph P. Tracy 1937-8-7 15615 Humboldt 1 mi n Murphy Meadow; Bald Mt. 914 Comment
  HSC34709  Perideridia kelloggii Thomas W. Nelson 1974-7-20 1697 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC56312  Perideridia kelloggii Overton, Butler 1979-8-2 12645 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC184323  Perideridia kelloggii Joseph P. Tracy 1912-8-3 3967 Humboldt Dinsmore's Ranch Northern Coast Ranges, valley of Van Duzen River (opposite Buck Mt.) 762 Comment
  HSC98753  Perideridia oregana Cara Witte 2007-7-27 601 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1560 Comment
  SEINET13978219 Image available Petasites frigidus var. palmatus R. R. Halse 2016-1 9684 Humboldt Along US Hwy 101 ca. 9.6 mi S of Orick. 8 Comment
  HSC13680  Phacelia bolanderi W. Lanphere 1937-5-25 Humboldt Dyerville Comment
  JEPS1446  Phacelia bolanderi Milo S. Baker 1923-7-10 1 Humboldt hwy s Garberville Comment
  UC1586868  Phacelia bolanderi Juha Pykala and D. H. Norris 1987-6-10 1510 Humboldt on a road to Onion Lake about 18 mi from Highway 96; Six Rivers National Forest Comment
  RSA275310  Phacelia corymbosa Thomas W. Nelson, Jane P. Nelson 1977-7-4 3576 Humboldt At head of North Fork of Conley creek. 1463 Comment
  HSC60087  Phacelia heterophylla M. A. Baker 1978-5-6 478 Humboldt 2 km. S of Weitchpec Comment
  HSC99465  Phacelia heterophylla subsp. virgata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 119 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  JEPS2079  Phacelia heterophylla subsp. virgata Lincoln Constance 1934-5-29 731 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek region 365 Comment
  BLMAR633  Phacelia heterophylla subsp. virgata Jennifer Wheeler 2011-6-15 633 Humboldt Lacks Creek, Junction of midslope road, firewood cutting area road and Pine Ridge Road 957 Comment
  JEPS91346  Phacelia mutabilis Dean W. Taylor 1991-8-15 12299 Humboldt ridge 1 mile West of Horse Mountain, 1493 Comment
  HSC75489  Phacelia procera J. O. Sawyer 1980-7-18 3630 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  JEPS1090  Phacelia procera Joseph P. Tracy 1932-7-12 10431 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC258864  Phalaris aquatica Henry M. Pollard 1947-9-1 s.n. Humboldt Field near Perch Creek, Orleans region Comment
  UCSC000088  Phalaris californica H. L. Person 1932-5-11 s.n. Humboldt near Arcata - Eureka 15 Comment
  UC615281  Philadelphus lewisii Beryl O. Schreiber 1932-7-12 372 Humboldt near Klamath Comment
  HSC26164  Phleum alpinum J. P. Smith, Steve Selva 1970-6-30 4127 Humboldt Comment
  HSC58414  Phleum alpinum Griswold, Butler 1979-7-12 7215 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC188863  Phleum alpinum Joseph Burtt Davy 1899-7-30 6198 Humboldt Russ Ranch Comment
  UCD89305  Phleum alpinum Don Hagar 1957-8-6 s.n. Humboldt Jackson Hole, west slope of the Trinity Summit area. 1645 Comment
  HSC58632  Phleum pratense Gilbert Muth 1979-7-31 11490 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  RSA53767  Phleum pratense Henry M. Pollard 1945-8-31 s.n. Humboldt Orleans to Somes Bar, east side of Klamath River. Comment
  HSC55333  Phlox adsurgens Griswold, Butler 1979-7-12 7177 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC44351  Phlox diffusa Brad Klipfel 1975-7-11 698 Humboldt Horse Mtn. Comment
  JEPS79944  Phlox diffusa Joseph P. Tracy 1932-7-18 10699 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  UC1198557  Phlox gracilis Joseph P. Tracy 1908-6 2829 Humboldt nw slope Buck Mountain; Northern Coast Ranges 914 Comment
  UC1198559  Phlox gracilis Joseph P. Tracy 1932-4-24 9824 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  UC908475  Phlox gracilis Joseph P. Tracy 1930-6-21 8790 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  RSA698146  Phoradendron villosum J. Russell Bruff 1937-3-19 802 Humboldt Oak Flat camp - Ridge Route. Comment
  HSC18715  Physocarpus capitatus Paul Shields Jul 1955 Humboldt 1/2 mi. N of Weott Comment
  HSC31559  Physocarpus capitatus Glenn McGourty 1974-6-1 76 Humboldt Comment
  CAS-BOT-BC78145  Picea breweriana Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  CAS-BOT-BC78202  Picea sitchensis Carl B. Wolf 1927-8-29 1202 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge, [Mt.Glen] Mt. Glen Comment
  HSC1354  Picea sitchensis J. W. Johnson 1962-4-29 1295 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  NY34413  Picea sitchensis E. Fritz 1935-8-16 8154 Humboldt Comment
  SBBG34261  Picea sitchensis J. W. Howe 1938-3-31 Humboldt near Arcata Comment
  SEINET10904948  Picris echioides Mary Susan Taylor 1977-8-5 Taylor 1431 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  HSC70580  Pinus attenuata Gail Newton 1980-7-24 1775 Humboldt Near Somes Mtn. 1615 Comment
  HSC98703  Pinus attenuata Cara Witte 2007-9-3 640 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36. 1448 Comment
  RSA20776  Pinus attenuata C. B. Wolf 1937-8-13 9240 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  CAS-BOT-BC78378  Pinus contorta Alice Eastwood 1923-8-14 s.n. Humboldt Samoa Comment
  HSC1483  Pinus contorta R. I. Bonn 1965-5-9 46 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  RSA46498  Pinus monticola Doris K. Kildale 1927-3-27 2998 Humboldt 1 mile north of Trinidad. Comment
  HSC99047  Pinus ponderosa var. ponderosa Cara Witte 2008-6-13 725 Humboldt Forest Service Road 4N32. 1 mile south of intersection with Forest Service Road 4N32E. 1455 Comment
  UC14936  Piperia elegans J. P. Tracy 1901-8-7 1253 Humboldt opposite Eureka; Samoa Comment
  CAS-BOT-BC136587  Piperia michaelii L. B. Kildale 1930-8-3 10495 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  RSA259584  Piperia transversa J. D. Ackerman 1974-8-14 408 Humboldt 2 miles north of Manila, between sand dunes and Mad River Slough Comment
  UC1196412  Piperia unalascensis Joseph P. Tracy 1926-5-30 7521 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  HSC65473  Pityopus californicus Gail Newton 1980-6-24 545 Humboldt Near Ladder Rock 69 Comment
  UC552843  Plagiobothrys hispidulus Joseph P. Tracy 1935-7-25 14226 Humboldt wet meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC1541669  Plagiobothrys reticulatus H. E. and S. T. Parks July 1937 24042 Humboldt Trinidad, Spruce Cove Comment
  SEINET10456365  Plagiobothrys reticulatus Harold E. Parks Parks 24042 Humboldt Spruce Cove. 64 Comment
  JEPS60995  Plagiobothrys reticulatus var. rossianorum Joseph P. Tracy 1923-6-20 6340 Humboldt Miranda North Coast Ranges 91 Comment
  UC1222195  Plagiobothrys scouleri var. scouleri Joseph P. Tracy 1950-6-25 18900 Humboldt 3 mi s Burr Valley (near Sproston place, on road to Albee place, sw slopes Buck Mountain); Buck Mountain 1158 Comment
  RSA21081  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-6-19 8909 Humboldt Van Duzen River, 0.3 mi. above Bridgeville. 122 Comment
  UC1180486  Plagiobothrys tenellus Robert Ornduff 1960-6-1 6179 Humboldt meadow on high ridge about 3 mi e Garberville (on road to Alder Point) Comment
  SEINET8665540  Plantago australis subsp. hirtella J. P. Tracy 1906-6-17 2493 Humboldt Immediate vicinity of Eureka Comment
  UCD124428  Plantago erecta D. E. Breedlove 1962-6-7 3046 Humboldt 1.5 miles south of Samoa on peninsula on west side of Humboldt Bay. 106 Comment
  UC1196135  Plantago lanceolata Joseph P. Tracy 1901-7-31 1233 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC28010  Plantago lanceolata J. Burtt Davy 1899-6-16 5553 Humboldt near Scotia; North Coast Ranges Comment
  UCD124573  Plantago lanceolata Linda M. Barker 1976-4-30 1401 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC67528  Plantago lanceolata J. P. Smith, Steve Selva 1970-6-14 3838 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  RSA43877  Plantago purshii var. oblonga H. M. Pollard 1948-8-3 s.n. Humboldt New Orleans. Comment
  JEPS6471  Plantago subnuda Rimo Bacigalupi and G. T. Robbins 1954-8-10 4760 Humboldt 0.4 mi s south boundary marker for Dry Lagoon Beach (along U.S. Highway 101); Dry Lagoon Beach Comment
  HSC98718  Platanthera dilatata var. leucostachys Cara Witte 2008-7-1 791 Humboldt Near Grouse Mountain spring. Along Forest Service Road 5N04. 1/4 mile east of intersection with 4N70. 1583 Comment
  UCD138980  Platanthera dilatata var. leucostachys R. S. Woglum 1937-8-29 2037 -a Humboldt State Park grounds south of Trinidad. Comment
  RSA178584  Platanthera sparsiflora Joseph P. Tracy 1950-7-2 18964 Humboldt Happy Camp Mountain (in Trinity Summit Range, 6 miles NE of Hawkins Bar.) Wet place at Fern Spring 1280 Comment
  CAS-BOT-BC91639  Platystemon californicus Tom Craig 1941-6-29 s.n. Humboldt Samoa, near Eureka. Comment
  HSC79386  Platystemon californicus Kenneth Clark 1981-5-24 1390 Humboldt Abalone Pt. 15 Comment
  UC146105  Platystemon californicus Joseph P. Tracy 1904-4-24 2020 Humboldt sand dunes of Ocean Beach Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
  CAS-BOT-BC91636  Platystemon californicus Joseph P. Tracy 1932-6-26 10266 Humboldt Northern Coast Region.. Valley of South Yager Creek. 762 Comment
  UC146096  Platystemon californicus Joseph P. Tracy 1904-5-1 2047 Humboldt Bucksport; Northern Coast Region, Region about Humboldt Bay 0 Comment
  UC184734  Platystemon californicus Joseph P. Tracy 1913-6-15 4139 Humboldt opposite Buck Mountain (Dinsmore's Ranch, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC999835  Plectritis brachystemon S. C. Dyal 1938-6-11 719 Humboldt 14 mi w of Dinsmore (e side of McClellan Mountain); McClellan Mountain Comment
  UC1239596  Plectritis congesta Joseph P. Tracy 1935-6-23 13974 Humboldt French Camp Ridge 1066 Comment
  UC1239605  Plectritis congesta Joseph P. Tracy 1932-6-26 10255 1/2 Humboldt Valley of South Yager Creek 762 Comment
  UC1239580  Plectritis congesta Joseph P. Tracy 1904-4-24 2024 Humboldt Ocean Beach at Humboldt Bay Ocean Beach Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  RSA506997  Plectritis congesta subsp. brachystemon H. E. Parks, Joseph P. Tracy 1934-6-14 11022 Humboldt Horse Mountain. 1220 Comment
  SEINET10602042  Pleuropogon refractus Harley P. Chandler Chandler 1107 Humboldt Bay. 15 Comment
  JEPS72921  Poa annua Lincoln Constance 1934-6-19 918 Humboldt near summit Grasshopper Peak; Bull Creek Region 914 Comment
  HSC73731  Poa bolanderi M. A. Baker 1980-7-19 3009 Humboldt Near Bret Hole. 1814 Comment
  UC1103795  Poa howellii Joseph P. Tracy 1918-7-5 5035 Humboldt White Thorn Valley; Northern Coast Ranges 304 Comment
  UC1103180  Poa kelloggii Joseph P. Tracy 1918-5-12 4931 Humboldt along old rd. at Eureka; Northern Coast Ranges, Eureka 0 Comment
  RSA54930  Poa macrantha W. A. Silveus 1938-7-10 6912 Humboldt North of Eureka Comment
  UC1132727  Poa pratensis subsp. pratensis H. S. Yates 1936-5-23 5854 Humboldt 2 mi e of mouth of Mad River; Eureka Quadrangle Comment
  RSA63625  Poa secunda Milo S. Baker s.n. Humboldt Near Yager Comment
  UC180500  Poa secunda subsp. secunda Joseph P. Tracy 1913-6-14 4120 Humboldt opposite Buck Mt (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  OBI13588  Pogogyne zizyphoroides Joseph P. Tracy 1946-5-30 17544 Humboldt Carlotta. Open flat by old Strong's District School House, 5 mi E of town Comment
  JEPS69885  Polemonium carneum Joseph P. Tracy 1928-5-20 8440 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  RSA21204  Polemonium carneum C. B. Wolf 1937-8-10 9093 Humboldt Big Lagoon, so. side, w. side of Redwood Highway 6 Comment
  HSC35200  Polycarpon tetraphyllum Thomas W. Nelson 1975-11-3 2039 Humboldt 7th and H Sts., Eureka Comment
  HSC54552  Polygala cornuta Overton, Butler 1979-7-24 9554 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  SEINET1004839  Polygala cornuta var. cornuta Joseph P. Tracy 1926-1 7744 Humboldt Trinity River Valley, Near the south fork 183 Comment
  UC1198989  Polygala cornuta var. cornuta Joseph P. Tracy 1939-8-16 16414 Humboldt barren places Horse Mountain 1432 Comment
  UC249657  Polygonum bolanderi Joseph P. Tracy 1921-8-21 5944 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC56170  Polygonum douglasii G. L. Clifton, Griswold 1979-8-1 12063 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  SEINET3405786 Image available Polygonum douglasii Joseph P. Tracy 1947-8-24 17887 Humboldt Trinity Summit, Near Box Camp, in open fir timber 1524 Comment
  POM312530  Polygonum lapathifolium S. Galen Smith, Malcolm A. Nobs 1949-8-9 1232 Humboldt Marshy pond on Southern side of the town of Blue Lake Comment
  CAS-BOT-BC418615  Polygonum majus Alice Eastwood 1921-7-21 10668 Humboldt Van Duzen River Comment
  UC205473  Polygonum minimum Joseph P. Tracy 1919-9-18 5235 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  CAS-BOT-BC109183  Polygonum paronychia Greg de Nevers 2001-4-18 12252 Humboldt Lanphere-Christenson dunes, near Arcata. 9 Comment
  UC672944  Polygonum paronychia Joseph P. Tracy 1927-1-15 7836 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC672979  Polygonum phytolaccifolium Joseph P. Tracy 1933-7-26 12921 Humboldt Grouse Mountain; around old cabin 1524 Comment
  HSC55283  Polygonum polygaloides subsp. kelloggii Overton, Butler 1979-8-2 12711 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA275327  Polygonum polystachyum Thomas W. Nelson 1978-10-10 4555 Humboldt Growing on Hwy 101 right of way just N of Humboldt State University exit, 1.5 miles. Comment
  HSC98687  Polygonum sawatchense subsp. oblivium Cara Witte 2007-7-5 420 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1578 Comment
  CAS-BOT-BC421004  Polygonum spergulariiforme Doris K. Kildale 1928-6-24 5296 Humboldt Entrance to Horse Mountain 853 Comment
  HSC98570  Polygonum spergulariiforme Cara Witte 2007-9-14 647 Humboldt Forest Service Road 4N32. 4/10 mile north of intersection with Forest Service Road 4N32B. 1413 Comment
  CAS-BOT-BC71829  Polypodium californicum Joseph P. Tracy 1941-3-26 16835 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  SDSU19201  Polypodium calirhiza Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3015 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 1.7 miles south. Roadcut, north side of road. Ca. 1.4 aerial miles west-northwest of Horse Mtn. Radio Tower. 963 Comment
  CHSC37525  Polypodium glycyrrhiza M. S. Taylor 1982-10-24 5184 Humboldt Samoa, under bridge, ca. 1 mi nw of Eureka. 0 Comment
  HSC39942  Polypodium glycyrrhiza Linda M. Barker 1976-3-11 1328 Humboldt 3 mi. W of Arcata Comment
  CAS-BOT-BC76848  Polypodium glycyrrhiza Doris K. Kildale 1928-2-19 4262 Humboldt Big Rock between Little River and Moonstone Beach Comment
  HSC28927  Polypodium glycyrrhiza Diane Johnson 1972-4-12 Humboldt Butler Valley near Big Bend Rd. Comment
  RSA136736  Polypodium glycyrrhiza I. L. Wiggins 1957-6-20 14134 Humboldt East side of highway, Trinidad Comment
  SEINET11723018  Polypodium glycyrrhiza E. A. York 1990-1-10 2671 Humboldt USGS Redwood Field Station, Arcata Comment
  UC955491  Polypodium glycyrrhiza Mrs. Carlotta C. Hall 1924-8-9 234 Humboldt Wilder Ranch near Carlotta 91 Comment
  CAS-BOT-BC72085  Polypodium scouleri W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  JEPS93137  Polypodium scouleri M. Wetherwax 1992-5-20 2434 Humboldt coastal bluff s side of Wedding Rock; Patrick's Point State Park 30 Comment
  SEINET200797 Image available Polypodium scouleri Frank C. Gregory 1923-8-4 Humboldt Eureka 61 Comment
  HSC26462  Polypodium scouleri T. O. Osborne 1970-4-8 16 Humboldt Sugarloaf Rock, Cape Mendocino 61 Comment
  CAS-BOT-BC233072  Polypogon interruptus Joseph P. Tracy 1930-6-29 8819 Humboldt Buck Mountain, lower foothills of its NW slope 762 Comment
  SEINET10602409  Polypogon interruptus Joseph P. Tracy 1912-6-27 Tracy 3709 Humboldt At Eureka. 0 Comment
  HSC10853  Polypogon monspeliensis David K. Smith 1968-11-20 80 Humboldt About 4 miles SE of Arcata, along Jacoby Creek. Comment
  UC1103196  Polypogon monspeliensis J. P. Tracy 1901-7-24 1217 Humboldt streets Eureka; immediate vicinity of Eureka 0 Comment
  UC1440055  Polystichum Danin & H. G. Baker 1960-9-2 663 Humboldt Bull Creek-Honeydew Rd. Comment
  HSC46091  Polystichum imbricans J. P. Smith, Steve Selva 1970-6-14 3814 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CAS-BOT-BC76763  Polystichum imbricans subsp. imbricans L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road. Comment
  HSC49919  Polystichum munitum Maralyn O'Meara 1973-2-9 122 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  HSC55170  Polystichum munitum Gilbert Muth 1979-8-1 12166 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC1440062  Polystichum munitum Danin & H. G. Baker 1960-8-14 613 Humboldt ca. 1 mi toward Garberville from Myers Flat (Nelson Grove); Humboldt Redwoods State Park Comment
  UC397299  Polystichum munitum Harley P. Chandler June, 1901 1316 Humboldt Hupa Indian Reservation; North Coast Ranges 152 Comment
  UC906749  Polystichum munitum Joseph P. Tracy 1947-7-9 17843 Humboldt Horse Mt. 1432 Comment
  HSC31655  Populus trichocarpa Timothy B. Devine 1974-5-4 325 Humboldt Mad River floodplain 1 mi. from Blue Lake on Hatchery Rd. 305 Comment
  HSC18724  Potentilla anserina subsp. pacifica S. J. Hawks 1965-5-14 66 Humboldt 2 mi. NW of McKinleyville Comment
  HSC62830  Potentilla anserina subsp. pacifica J. M. DiTomaso 1979-4-21 883 Humboldt Clam Beach Comment
  HSC95655  Potentilla anserina subsp. pacifica Andrea Pickart 2002-4-22 52 Humboldt Lanphere Dunes, upper edge of Mad River Slough 10 Comment
  RSA647543  Potentilla drummondii Marion P. Harthill 1972-7-19 1319 Humboldt Fish Lake 1067 Comment
  UC492177  Potentilla gracilis Joseph P. Tracy 1932-7-10 10387 Humboldt wet meadow at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  RSA46469  Potentilla gracilis Doris K. Kildale 1927-7-10 3721 Humboldt Gans Prairie, Bald Hills. Comment
  HSC57944  Potentilla gracilis var. fastigiata G. L. Clifton, Griswold 1979-7-31 11615 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC60293  Prosartes smithii Phyllis Krieg 1979-4-28 Humboldt Azalea Park along trail, McKinleyville 30 Comment
  HSC100508  Prunella vulgaris Carl C. Marshall Sep 1886 249 Humboldt Ravines, etc. Comment
  SEINET13947063 Image available Prunella vulgaris W. J. Ferlatte, B. D. Rogers 1966-1 2093 Humboldt Near Bridgeville; T30N, R3E, SEC11 Comment
  HSC81963  Prunella vulgaris subsp. lanceolata Thomas W. Nelson, Jane P. Nelson 1979-7-3 4946 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC63631  Prunella vulgaris subsp. lanceolata J. P. Smith, Steve Selva 1970-6-30 4100 Humboldt Comment
  CAS-BOT-BC159830  Prunus avium Henry M. Pollard 1948-7-20 s.n. Humboldt Near Orleans Escape Comment
  RSA43859  Prunus avium H. M. Pollard 1948-7-20 s.n. Humboldt River banks, roadsides and edges of forest near Orleans escape Comment
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Sep 17 2010
  RSA46729  Prunus virginiana var. melanocarpa Doris K. Kildale 1937-8-10 15351 Humboldt High Divide Comment
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May 5 2014
  JEPS48296  Pseudotsuga menziesii var. menziesii Lincoln Constance 1934-5-24 643 Humboldt lower Look Prairie Bull Creek Region 121 Comment
  UC1198273  Pseudotsuga menziesii var. menziesii Joseph P. Tracy 1943-3-14 17407 Humboldt 5 mi e of Carlotta (open flat by old Strong's District School House) 45 Comment
  UC1223166  Psilocarphus tenellus Joseph P. Tracy 1950-6-29 18937 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  CAS-BOT-BC72558  Pteridium aquilinum Doris K. Kildale 1926-8-8 2447 Humboldt Bull Creek Flat Comment
  BLMAR157  Pteridium aquilinum var. pubescens Donald Hazlett 1994-6-7 157 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC18481  Pteridium aquilinum var. pubescens Jana Kattenhorn 1970-10-24 108 Humboldt H.S.C. Campus, Arcata Comment
  HSC55030  Pteridium aquilinum var. pubescens Walter Overton, Butler 1979-7-31 11466 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  HSC55265  Pteridium aquilinum var. pubescens Walter Overton, Butler 1979-8-2 12617 Humboldt Near Grogan Hole, close to the town of Hoopa 1554 Comment
  UC672932  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  JEPS58815  Pyrola dentata Joseph P. Tracy 1926-6-6 7564 Humboldt Hoopa Mountain. On road West from Hoopa Valley, Northern Coast Ranges 914 Comment
  CAS-BOT-BC466038  Pyrola picta L. B. Kildale 1930-8-3 10364 Humboldt Chaparral Mt. near Bug Creek 914 Comment
  UC154161  Pyrola picta Mrs. M. H. Manning 1900-1 Humboldt near Hupa, Bald Hill Comment
  UCD117815  Pyrola picta D. C. Hagar 1957-6-17 L 8 Humboldt Happy Camp Mountain, 5 miles northeast of Salyer. 1280 Comment
  UCD47053  Quercus X morehus W. L. J. Jun-5 Jul 1903 2191 Humboldt Van Arsdale Ranch, Halker Valley region. Expedition of W.L. Jepson and W.W. Mott from Ukiah to southern Humboldt Co., via the Blue Rock Ridge and return via Fort Bragg. 457 Comment
  CAS-BOT-BC62670  Quercus chrysolepis Doris K. Kildale 1926-9-5 2640 Humboldt on trail between Red Peaks & Signal Peak Lassiks Peaks 1706 Comment
  UC1196530  Quercus chrysolepis Joseph P. Tracy 1935-7-14 14066 Humboldt ridge back of Clear Lake; North Coast Ranges, Grouse Mountain 1524 Comment
  UC203862  Quercus chrysolepis Joseph P. Tracy 1918-9-29 5109 Humboldt 4 mi above mouth of South Fork Eel River; North Coast Ranges, South Fork Eel River 60 Comment
  HSC35716  Quercus garryana Thomas W. Nelson 1975-10-12 2233 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC98688  Quercus kelloggii Cara Witte 2008-10-18 1060 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N36. 1248 Comment
  UCD46652  Quercus kelloggii R. N. Raynor 1935-4-15 s.n. Humboldt Fort Seward. Comment
  SEINET3823284 Image available Quercus sadleriana Joseph P. Tracy 1947-8-24 17909 Humboldt Trinity Summit, Box Camp 1524 Comment
  CAS-BOT-BC104537  Quercus vacciniifolia Doris K. Kildale 1928-10-7 6747 Humboldt Willow Creek Canyon 7 miles from mouth 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
  HSC54519  Quercus vacciniifolia Overton, Butler 1979-7-23 9446 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  HSC98847  Quercus vacciniifolia Cara Witte 2008-7-11 867 Humboldt Horse Mountain Botanical Area. National Forest 1. 1/2 mile west of intersection with Forest Service Roads 6N38 and 6N36. 1426 Comment
  OBI36118  Quercus vacciniifolia David J. Keil 1983-7-2 17324 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mountain Summit rd Comment
  UC1103018  Ranunculus arvensis Joseph P. Tracy 1940-5-17 16554 Humboldt Buck Mountain; lower foothills of nw slope 762 Comment
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Jun 18 2011
  HSC79359  Ranunculus californicus Kenneth Clark 1980-3-22 521 Humboldt Ridge above Dead Man's Gulch 152 Comment
  UC552300  Ranunculus flammula Joseph P. Tracy 1934-7-13 13390 Humboldt Dow's Prairie 60 Comment
  HSC55312  Ranunculus flammula var. ovalis Griswold, Butler 1979-7-11 6988 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC18212  Ranunculus flammula var. ovalis R. D. Modafferi 1965-5-13 71 Humboldt 2.3 mi. N of Trinidad on Trinity St. 305 Comment
  BLMAR116  Ranunculus occidentalis Jennifer Anthony-Wheeler 1995-3-15 116 Humboldt King range, growing throughout riverside at honeydew campground 121 Comment
  UC1196224  Ranunculus occidentalis Joseph P. Tracy 1920-5-18 5327 Humboldt 5 mi above Dyerville; Northern Coast Ranges, South Fork Eel River, Forest Lodge 60 Comment
  UCD96942  Ranunculus occidentalis R. N. Raynor 1936-3-21 s.n. Humboldt Fort Seward. Comment
  UC183728  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3604 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC98760  Ranunculus orthorhynchus var. platyphyllus Cara Witte 2008-7-2 824 Humboldt Board Camp Mountain. Forest Service Rd. 4N38. Approximately 1 mile south of 4N38 and National Forest 1 intersection. 1416 Comment
  UC902204  Rhamnus californica Joseph P. Tracy 1942-8-30 17304 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS41952  Rhamnus purshiana W. L. Jepson 1902-7-15 2032 Humboldt Mud Spring to Trinity Summit 1219 Comment
  LA207876  Rhamnus purshiana Doris K. Kildale; 1929-6-25 8394 Humboldt Eureka, Pine's Pasture Comment
  RSA246419  Rhamnus purshiana Carl B. Wolf 1937-8-13 9260 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  UC726369  Rhamnus purshiana A. A. Heller 1923-7-9 13775 Humboldt 5 mi from Arcata (near Blue Lake) Comment
  UCR3519  Rhamnus purshiana David Whistler, H. M. Whistler 1964-8-1 640801- 4 Humboldt Coast Range, US Hwy 299, 6 mi east of Blue Lake Comment
  RSA8096  Rhamnus tomentella subsp. tomentella Doris K. Kildale 1928-10-7 6754 Humboldt Trinity River at mouth of Willow Creek Comment
  HSC36263  Rhododendron columbianum John Rehling 1974-8-20 25 Humboldt Big Lagoon Bog Comment
  CAS-BOT-BC56609  Rhododendron macrophyllum C. B. Wolf 1931-8-29 2370 Humboldt Near summit of Orick Hill on road to Weitchpec 304 Comment
  CAS-BOT-BC56613  Rhododendron macrophyllum Mrs. Rachel Ellery 1916-4-1 s.n. Humboldt Beatrice Comment
  UC162760  Rhododendron occidentale Joseph P. Tracy 1911-7-6 3340 Humboldt between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC1733675  Rhododendron occidentale Frank Gould, Kay H. Beach 1940-5-5 1041 Humboldt along north coast, north of Eureka. Comment
  UC22135  Rhododendron occidentale Harley P. Chandler June, 1901 1448 Humboldt Klamath River; North Coast Ranges, Klamath River 457 Comment
  CAS-BOT-BC200379  Rhododendron occidentale var. paludosum Henry M. Pollard 1948-8-9 s.n. Humboldt Camp Creek, near Orleans Comment
  RSA0062952  Rhododendron occidentale var. paludosum C. B. Wolf 1934-7-2 5905 Humboldt 4.5 miles from Snow Camp on road to Bald Mt (Mtns E of Korbel). 1067 Comment
  HSC100495  Ribes Carl C. Marshall Apr 1887 395 Humboldt Hoopa Valley. Comment
  CAS-BOT-BC433144  Ribes Doris K. Kildale 1928-5-1 5989 Humboldt MacLellan [McClellan] Mountain 914 Comment
  HSC101979  Ribes binominatum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 876 Humboldt Patterson Meadows 1566 Comment
  HSC103188  Ribes binominatum Jade Paget-Seekins 2010-7-6 41 Humboldt On the western shore of Red Cap Lake, mostly to the right of the rocky slope. (Accessible via a few hour hike from the High Point trailhead outside of Forks of Salmon.) 1754 Comment
  RSA459475  Ribes binominatum Thomas W. Nelson, Jane Nelson 1976-7-26 3040 Humboldt Along ridge NW of Mount Lassic (Signal Peak) 1707 Comment
  HSC20276  Ribes bracteosum S. S. Stutz 1963-5-18 53 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  UC615054  Ribes bracteosum Beryl O. Schreiber 1934-6-5 1140 Humboldt road to Redding (Gray's Resort); Redwood Creek Comment
  HSC20290  Ribes divaricatum W. R. Rogers 1966-5-1 243 Humboldt Azella State Reserve Comment
  CAS-BOT-BC108912  Ribes divaricatum var. pubiflorum H. E. McMinn 1922-8-5 345 Humboldt Along Van Duzen River. Comment
  UC1225766  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1941-3-26 16813 Humboldt opposite mouth Willow Creek (Lack Pond); Trinity River Valley 152 Comment
  UC667073  Ribes inerme var. klamathense Joseph P. Tracy 1939-5-6 16281 Humboldt opposite mouth Willow Creek (Lack Pond); Trinity River Valley 152 Comment
  HSC103197  Ribes lacustre Jade Paget-Seekins 2010-7-5 38 Humboldt On the trail to Mill Creek Lake, up Big Hill Road, outside of Hoopa. 1655 Comment
  HSC56265  Ribes lacustre G. L. Clifton, Griswold 1979-8-2 12423 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS49366  Ribes lacustre P. E. Goddard 1901-7 125 Humboldt Trinity Summit Trail Comment
  UC11582  Ribes laxiflorum Harley P. Chandler May, 1901 1202 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  HSC20302  Ribes laxiflorum J. W. Johnson 1962-3-22 1436 Humboldt Samoa Peninsula, Miller Farm. Comment
  HSC56309  Ribes lobbii Overton, Butler 1979-8-2 12628 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA0021132  Ribes lobbii Lincoln Constance, R. C. Rollins 1942-5-11 2864 Humboldt Near summit 8 miles east of Blue Lake. Comment
  CAS-BOT-BC206031  Ribes menziesii L. R. Abrams; R. Bacigalupi 1922-6-25 8289 Humboldt North of Big Lagoon near Orick 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
  HSC20319  Ribes menziesii Doris K. Kildale 1926-3-26 1650 Humboldt Old Fortuna Rd. near junction with new Hwy. beyond Fernbridge Comment
  JEPS49210  Ribes menziesii Harley P. Chandler May, 1901 1117 Humboldt Humboldt Bay North Coast Ranges 304 Comment
  HSC58052  Ribes nevadense G. L. Clifton, Griswold 1979-8-1 11918 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  SEINET3825262 Image available Ribes nevadense Joseph P. Tracy 1932-7-18 10716 Humboldt Head of Brett Hole 1829 Comment
  HSC70757  Ribes roezlii R. York 1980-5-17 526 Humboldt Near Le Perron Peak 792 Comment
  UC902081  Ribes roezlii var. cruentum Joseph P. Tracy 1949-7-19 18378 Humboldt Grouse Mountain 1280 Comment
  RSA0024587  Ribes roezlii var. cruentum Lyman Benson 1929-7-19 1872 Humboldt Ridge between Bull Creek and Matole [Mattole] River. Comment
  HSC20338  Ribes sanguineum Eugene Andreuccetti 1964-5-2 32 Humboldt 3.25 mi. N of Tish Tang Ranger Station on Hwy. 96 Comment
  RSA0018244  Ribes sanguineum S. Ganley 1971-5-29 661 Humboldt Highway 299, along Trinity River. 457 Comment
  HSC79518  Ribes sanguineum var. glutinosum Kenneth Clark 1980-3-1 520 Humboldt Lower and middle terraces of Dead Man's Gulch 37 Comment
  UC667052  Ribes sanguineum var. glutinosum Joseph P. Tracy 1939-5-14 16290 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  SEINET2153800  Ribes sanguineum var. sanguineum K. T. Harper 2002-1 2002 -4 Humboldt Redwood Park, near Orick. Comment
  HSC103199  Ribes viscosissimum Jade Paget-Seekins 2010-7-5 36 Humboldt On the trail to Mill Creek Lake, up Big Hill Road, outside of Hoopa. 1655 Comment
  HSC26800  Romanzoffia californica Thomas W. Nelson 1971-4-24 404 Humboldt Willow Creek Comment
  UC14402  Rorippa curvisiliqua Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  CAS-BOT-BC74511  Rorippa curvisiliqua Henry M. Pollard 1946-8-10 s.n. Humboldt Klamath River, near Wilson Creek, Orleans region. Comment
  UC492262  Rorippa curvisiliqua H. E. Parks and Joseph P. Tracy 1931-5-17 9426 Humboldt Trinity River Valley Willow Creek; Northern Coast Ranges, Trinity River Valley nr Willow Creek 152 Comment
  UC154495  Rosa Harley P. Chandler June, 1901 1334 Humboldt Hupa Valley North Coast Ranges, Hupa Indian Reservation 152 Comment
  POM275419  Rosa gymnocarpa Lyman D. Benson 1928-7-12 489 Humboldt Weott Ranger Station. Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  POM275420  Rosa gymnocarpa Lyman D. Benson 1928-7-8 376 Humboldt Weott Ranger Station. Seaward N Coast Mt. Range, S Fork Eel River. 61 Comment
  UC1052193  Rosa gymnocarpa J. L. Meyer 1954-10-10 33 Humboldt 3 mi n Blocksburg (outside National Forest); Quadrangle 29A3 457 Comment
  CAS-BOT-BC146834  Rosa nutkana L. R. Abrams 1916-7-20 6146 Humboldt Between Eureka and Alton Comment
  CAS-BOT-BC146836  Rosa nutkana H. E. Parks; S. T. Parks 1937-5-1 5816 Humboldt Spruce Cove, Trinidad 60 Comment
  SBBG3090  Rosa nutkana M. J. Cody 1938-7-14 Humboldt 2 mi N of Trinidad Comment
  JEPS47245  Rosa nutkana var. nutkana W. L. Jepson 1936-8-17 17912 Humboldt 2 mi s Field's Landing (near Still's ranch) Comment
  UC180188  Rosa nutkana var. nutkana Joseph P. Tracy 1914-5-30 4479 Humboldt Alton Northern Coast Region (same locality as Tracy #40000) 30 Comment
  SEINET4092393  Rosa pisocarpa O. M. Clark 1932-1 782 Humboldt South Eureka. Comment
  POM366457  Rubus laciniatus Thekla Mohr 1900-07 s.n. Humboldt Eel River Comment
  UC1199044  Rubus lasiococcus Joseph P. Tracy 1947-6-26 17746 Humboldt near McKay camp (South Fork Mountain); , near McKay camp 1676 Comment
  UC492165  Rubus lasiococcus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9021 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC467839  Rubus leucodermis P. E. Goddard 1906-6 673 Humboldt Lasseck Pk. Lasseck Pk Comment
  HSC41325  Rubus parviflorus Brad Klipfel 1974-8-2 516 Humboldt Horse Mtn. Comment
  HSC60109  Rubus parviflorus M. A. Baker 1977-5-1 279 Humboldt E of Humboldt State University. Comment
  HSC95871  Rubus parviflorus Will Ferrand 2001-6-17 16 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  NY1043365  Rubus parviflorus D. K. Gillespie 1938-8-6 15397 Humboldt Eureka Comment
  HSC100638  Rubus spectabilis Carl C. Marshall Apr 1886 165 Humboldt Everywhere in rich soils. Comment
  HSC22495  Rubus spectabilis D. Connell 1965-5-11 54 Humboldt Arcata, Jolly Giant Creek Comment
  HSC31512  Rubus spectabilis Steve Selva, Roger Jensen 1974-8-21 27 Humboldt Redwood grove adjacent to Hwy. 101 rest stop, ca. 3 mi. N of Trinidad Comment
  UC14181  Rubus spectabilis W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  UCD113808  Rubus spectabilis Linda M. Barker 1976-3-22 1345 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  BLMAR182  Rubus ursinus Donald Hazlett 1994-6-7 182 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UCD17838  Rubus ursinus H. Olmo 8-10 May 1962 62- 35 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. 670 Comment
  POM271074  Rubus vitifolius Lyman D. Benson 1929-7-15 1814 Humboldt Clam Beach. Trinidad. Comment
  CAS-BOT-BC363202  Rudbeckia occidentalis Carl B. Wolf 1937-8-13 9250 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on new road towards Trinity Summit 1524 Comment
  HSC17585  Rumex acetosella P. W. Shields 1955-6-10 Humboldt HSC campus Comment
  HSC55097  Rumex acetosella G. L. Clifton 1979-7-31 11801 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC76604  Rumex acetosella John Demarinis 1981-7-21 885 Humboldt Near Table Bluff 38 Comment
  HSC45490  Rumex acetosella Maralyn O'Meara 1972-6-8 101 Humboldt Along Bald Hills Rd. 18 mi. E of junction with Hwy. 101 Comment
  SEINET4206289  Rumex acetosella J. Raycraft 1966-4-23 s.n. Humboldt Arcata 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
  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
  RSA53799  Rumex conglomeratus H. M. Pollard 1945-8-24 s.n. Humboldt Between Orleans and Camp Creek Klamath River Canyon. Comment
  UCR123958  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6984 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  HSC17592  Rumex crispus R. J. Vernimen 1963-3-25 18 Humboldt Along railroad tracks at Clam Beach lagoons Comment
  HSC17617  Rumex obtusifolius David K. Smith 1968-11-20 72 Humboldt At jct. of Old Arcata Rd. and Jacoby Creek Rd. Comment
  CAS-BOT-BC433704  Rumex occidentalis Doris Kildale Gillespie 1931-6-7 10651 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  CAS-BOT-BC454157  Ruppia maritima Malcom A. Nobs; S. Galen Smith 1949-8-3 1181 Humboldt Near mouth of the Elk River on Highway 101, ca. 4 miles south of Eureka Comment
  UC1100022  Ruppia maritima Malcolm A. Nobs and S. Galen Smith 1949-8-3 1182 Humboldt ca 4 mi s Eureka (on Highway 101, near mouth of Elk River) Comment
  UCD92351  Rytidosperma penicillatum R. Tofsrud 1947-7-1 200 Humboldt near Loleta. Comment
  SEINET10966379  Rytidosperma penicillatum Joseph P. Tracy 1942-6-28 Tracy 17267 Humboldt Hungry Hollow. on Bald Mountain 610 Comment
  UC1103530  Sagina apetala Joseph P. Tracy 1921-4-24 5435 Humboldt Phillipsville Flat Northern Coast Ranges, S. Fork Eel R., Phillipsville Flat 91 Comment
  POM318824  Salicornia Patricia Wilder 1968-8-21 4416 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  HSC4508  Salicornia depressa P. W. Shields 1955-9-15 Humboldt 4 mi. NW of Arcata. Comment
  CDA39544  Salix alba Gordon, Sylvia and Kai Leppig 2000-4-16 1297 Humboldt Arcata; Arcata March and Wildlife Sanctuary, west bank of Hauser Marsh. Comment
  CAS-BOT-BC129892  Salix bonplandiana Joseph P. Tracy 1933-6-9 s.n. Humboldt Shively - Northern Coast Ranges 30 Comment
  CAS-BOT-BC103810  Salix exigua Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01237 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  HSC19943  Salix exigua var. hindsiana H. E. Parks, J. P. Tracy 1931-5-17 971 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  UC1196600  Salix exigua var. hindsiana Joseph P. Tracy 1932-7-31 10294 Humboldt along Eel R. from S. Fork to Scotia (Larrabee Creek); Northern Coast Ranges 60 Comment
  UC511979  Salix exigua var. hindsiana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1248 Humboldt floodplain of Eel R. at Fernbridge Comment
  CAS-BOT-BC104103  Salix hindsiana Harold E. Parks 1931-5-14 0958 Humboldt Fernbridge, Eel River 10 Comment
  CAS-BOT-BC107701  Salix hookeriana Harold E. Parks 1931-5-12 954 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107710  Salix hookeriana L. R. Abrams 1916-7-18 6127 Humboldt Arcata to Trinidad Comment
  HSC20070  Salix hookeriana H. E. Parks, S. T. Parks 1931-8-20 1053 Humboldt Near Little River Lagoon Comment
  RSA239712  Salix hookeriana Larry E. DeBuhr 1973-4-23 995 Humboldt Big Lagoon 10 miles S of Orick, SW end of lagoon Comment
  RSA342503  Salix hookeriana Robert F. Thorne, Percy C. Everett 1965-8-9 35299 Humboldt Big Lagoon. 3 Comment
  UC1173624  Salix hookeriana Joseph P. Tracy 1937-8-12 15658 Humboldt Snow Camp 1402 Comment
  UC1196673  Salix hookeriana Joseph P. Tracy 1925-11-15 7315 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay (same region as #6929) 60 Comment
  UC1196681  Salix hookeriana Joseph P. Tracy 1919-3-30 5123 Humboldt Jacoby Creek Northern Coast Ranges, around Humboldt Bay (near the quarry) 91 Comment
  UC212999  Salix hookeriana Joseph P. Tracy 1920-2-29 5309 Humboldt Ryans Slough Northern Coast Ranges, around Humboldt Bay 15 Comment
  UC275498  Salix hookeriana Joseph P. Tracy 1925-10-11 7280 Humboldt near Kneeland Prairie (near Loren Frost place on Kneeland Rd.); Northern Coast Ranges 609 Comment
  UC303031  Salix hookeriana Joseph P. Tracy 1926-3-14 7389 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC469110  Salix hookeriana Joseph P. Tracy 1931-8-23 9618 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC481396  Salix hookeriana Harold E. Parks 1931-3-24 914 Humboldt Fortuna Eel River (bank of river) 10 Comment
  UC490475  Salix hookeriana H. E. Parks and Joseph P. Tracy 1932-8-13 10342 Humboldt vicinity of Trinidad; Northern Coast Region 60 Comment
  UC512099  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1210 b Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC512100  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1210 a Humboldt 4 1/2 mi s Trinidad (Little River Lagoon); Little River Lagoon Comment
  UCD111037  Salix hookeriana Linda M. Barker 1976-4-13 1383 Humboldt 3 miles west of Arcata. Comment
  UCD111039  Salix hookeriana Linda M. Barker 1976-4-30 1416 Humboldt 3 miles west of Arcata. Comment
  UCD111043  Salix hookeriana Linda M. Barker 1976-9-3 1693 Humboldt 3 miles west of Arcata. Comment
  UC481296  Salix lasiandra subsp. lasiandra Harold E. Parks and Joseph P. Tracy 1931-5-17 966 Humboldt mouth of Willow Creek at Trinity R. (banks of Willow Creek); Willow Creek 150 Comment
  CAS-BOT-BC107581  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1255 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107603  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-12 1236 Humboldt Gravelly floodplain of the Van Duzen River at Blue Slide 91 Comment
  HSC55635  Salix lasiolepis Overton, Butler 1979-7-24 9655 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC96360  Salix lasiolepis Gordon Leppig 1999-7-9 1188 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  HSC98013  Salix lasiolepis Cara Witte 2007-7-20 566 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1460 Comment
  HSC98772  Salix lasiolepis Cara Witte 2008-7-7 842 Humboldt National Forest Road 5N10. 2 miles south of intersection with Friday Ridge Road. Near waterhole sign. 1224 Comment
  JEPS12917  Salix lasiolepis Joseph P. Tracy 1927-8-7 8305 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS13081  Salix lasiolepis Joseph P. Tracy 1939-8-5 16392 Humboldt Van Duzen River at Dinsmore's 737 Comment
  UC469427  Salix lasiolepis Joseph P. Tracy 1931-9-7 9628 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC469428  Salix lasiolepis Joseph P. Tracy 1931-9-7 9629 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC481178  Salix lasiolepis Harold E. and Susan T. Parks 1931-8-15 1079 Humboldt on Van Duzen R. Blue Slide; Van Duzen R., Blue Slide 100 Comment
  UC490467  Salix lasiolepis Joseph P. Tracy 1932-9-5 10768 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC490546  Salix lasiolepis Joseph P. Tracy 1932-4-24 9806 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC504022  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1254 Humboldt 2 mi E of Redwood Highway ( Mad River at Engelhart gravel pit, above Blue Lake) Comment
  UC519349  Salix lasiolepis Joseph P. Tracy 1913-11-12 13115 Humboldt Miranda North Coast Ranges, South Fork of Eel River 91 Comment
  UCD111584  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-13 01255 Humboldt Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road. Comment
  RSA178543  Salix lasiolepis var. sandbergii Joseph P. Tracy 1950-4-20 18623 Humboldt Van Duzen River. 10 miles SE of Dinsmore's. About 4 miles SE of Kuntz. Comment
  POM184868  Salix lucida subsp. lasiandra H. E. Parks, Susan T. Parks 1932-5-12 1150 Humboldt Near bridge at mouth of Maple Creek. Big Lagoon. Comment
  POM362660  Salix lucida subsp. lasiandra H. E. Parks, Susan T. Parks 1932-5-12 1150 Humboldt Near bridge at mouth of Maple Creek. Big Lagoon. Comment
  CAS-BOT-BC125618  Salix melanopsis A. A. Heller 1923-7-10 13796 Humboldt Along the Eel River between Scotia and Pepperwood Comment
  CAS-BOT-BC125633  Salix melanopsis Harold E. Parks 1931-10-15 01077 Humboldt Bishop Pine Lodge, Trinidad 75 Comment
  JEPS12936  Salix melanopsis Joseph P. Tracy 1931-5-3 9344 Humboldt Mad River near Blue Lake; Northern Coast Region 15 Comment
  JEPS12953  Salix melanopsis Joseph P. Tracy 1932-5-10 9961 Humboldt Mattole River near Petrolia; Northern Coast Region 15 Comment
  SBBG57935  Salix melanopsis H. E. Parks 1931-5-14 965 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  UC469451  Salix melanopsis Joseph P. Tracy 1931-6-14 9581 Humboldt Van Duzen R., Alton Alton; Northern Coast Region, Van Duzen R., Alton 30 Comment
  UC470449  Salix melanopsis Joseph P. Tracy 1931-9-19 9682 Humboldt Van Duzen R. Alton; Northern Coast Region, Van Duzen R. 30 Comment
  UC481293  Salix melanopsis Harold E. Parks 1931-5-14 965 Humboldt between Alton and Carlotta (Van Duzen R.); Van Duzen R. 15 Comment
  UC481341  Salix melanopsis Harold E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge Trinidad 75 Comment
  UC511995  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1237 Humboldt Van Duzen R. at Blue Slide; Van Duzen R. 91 Comment
  UC519374  Salix melanopsis Joseph P. Tracy 1933-6-9 12532 Humboldt along Eel R. Shively; Northern Coast Ranges, , Eel R. 30 Comment
  UC726592  Salix melanopsis A. A. Heller 1923-7-10 13796 Humboldt between Scotia and Pepperwood (Eel R.); Eel R. Comment
  UCR143008  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 0967 Humboldt North Coast, mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC129247  Salix piperi Joseph P. Tracy 1934-9-22 13676 Humboldt Mouth of Mad River 9 Comment
  CAS-BOT-BC129155  Salix scouleriana Doris K. Kildale 1926-9-5 2637 Humboldt Lasseek's Peaks - Coral Camp 1661 Comment
  JEPS38417  Salix scouleriana W. L. Jepson 1932-8-1 16466 Humboldt Bull Creek 121 Comment
  UC1196702  Salix scouleriana Joseph P. Tracy 1926-10-12 7812 Humboldt near mouth of S. Fork Trinity R. MirandaFour Mile creek; Northern Coast Ranges, Four Mile Creek 609 Comment
  UC481241  Salix scouleriana Harold E. Parks 1931-12-1 1080 Humboldt Bishop Pine Lodge Trinidad; , Bishop Pine Lodge 60 Comment
  UC525974  Salix scouleriana H. E. Parks 1932-11-25 1351 Humboldt Spruce Cove (Parks Ranch) Trinidad; , Spruce Cove (Parks Ranch) Comment
  CAS-BOT-BC128995  Salix sitchensis Joseph P. Tracy 1933-7-16 12773 Humboldt South Fork Mountain: in wet meadow at McKay Camp 1676 Comment
  HSC38135  Salix sitchensis Thomas W. Nelson, James Nelson 1976-3-23 3280 Humboldt Van Duzen River at Grizzley Creek Comment
  HSC90400  Salix sitchensis Jean Hanson 1980-3-8 5 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC1196717  Salix sitchensis Joseph P. Tracy 1926-2-21 7357 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC1196720  Salix sitchensis Joseph P. Tracy 1919-3-23 5122 Humboldt at Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC146202  Salix sitchensis J. P. Tracy 1905-11-5 2397 Humboldt immediate vicinity Eureka 0 Comment
  UC481215  Salix sitchensis Harold E. Parks 1931-5-20 995 Humboldt Mad R. Blue Lake; , Blue Lake 15 Comment
  HSC20130  Salix tracyi H. E. Parks 1931-5-17 976 Humboldt Humboldt and Trinity Cos., Willow Creek 152 Comment
  UC526722  Salix tracyi Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC101557  Salvia mellifera J. P. Smith, J. O. Sawyer 2009-10-4 12685 Humboldt Along New Navy Base Road near Samoa Boat Ramp 2 Comment
  HSC99436  Sambucus nigra subsp. caerulea K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 85 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC235127  Sambucus racemosa var. racemosa John Thomas Howell 1931-6-17 6725 Humboldt 2 1/2 miles n. of Orick Comment
  HSC34632  Sambucus racemosa var. racemosa R. M. Sullivan 1975-4-9 1 Humboldt 2 mi. S of Trinidad on old Hwy. 101 Comment
  UCSB15630  Sambucus racemosa var. racemosa 1962-6-8 Humboldt Along U.S. Highway 101, 5 miles south of Orick 30 Comment
  CAS-BOT-BC235128  Sambucus racemosa var. racemosa Duncan Dunning 1921-10-2 37285 Humboldt Bulwinkle [Bullwinkle] Comment
  RSA86658  Sanguisorba officinalis subsp. microcephala F. W. Peirson 1941-7-28 13102 Humboldt About 10 miles below Patrick's Creek Camp Comment
  HSC45104  Sanicula arctopoides R. Sutherland 1978-2-18 9 Humboldt 3 Comment
  UC1197114  Sanicula arctopoides Joseph P. Tracy 1918-4-7 4860 Humboldt mouth of Strawberry Creek, Dow's Prairie, Northern Coast Ranges Strawberry Creek; Northern Coast Ranges, , Dow's Prairie 6 Comment
  HSC38937  Sanicula crassicaulis Linda M. Barker 1976-5-13 1485 Humboldt 3 mi. W of Arcata. Comment
  HSC82108  Sanicula crassicaulis Thomas W. Nelson, Jane P. Nelson 1980-5-25 5253 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  JEPS1002  Sanicula graveolens Joseph P. Tracy 1926-5-30 7520 Humboldt near Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  UC1515012  Sanicula laciniata Bolander June 1867 6522 Humboldt Mattole River Comment
  UCD128032  Sanicula laciniata R. N. Raynor 1935-3-2 s.n. Humboldt Fort Seward. Comment
  HSC81660  Sanicula tracyi Thomas W. Nelson, Jane P. Nelson 1980-7-13 6064 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  RSA296750  Sanicula tracyi Bruce Miner, Bob Easton 1979-5-29 s.n. Humboldt At east approach to State Route 36 bridge over Van Duzen River. 747 Comment
  UC642339  Sanicula tracyi Joseph P. Tracy 1929-7-4 8614 B Humboldt French Camp Ridge 1066 Comment
  HSC74271  Sanicula tuberosa M. A. Baker 1980-5-23 1378 Humboldt Near Buck Mtn. 1524 Comment
  UC642303  Sanicula tuberosa Joseph P. Tracy 1927-7-12 8156 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1219 Comment
  UC642317  Sanicula tuberosa Joseph P. Tracy 1933-7-11 12688 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  UC642318  Sanicula tuberosa Joseph P. Tracy 1930-7-17 9011 Humboldt near McKay Camp (South Fork Mountain); South Fork Mountain 1676 Comment
  UC1601285  Satureja douglasii Joseph P. Tracy 1923-6-20 6315 Humboldt White Thorn Valley 304 Comment
  JEPS62814  Satureja douglasii W. L. Jepson 1902-7-1 1966 Humboldt Berry's Ranch Redwood Creek Comment
  POM284650  Satureja douglasii Lyman Benson 1929-7-16 s.n. Humboldt Weott Ranger Station. Comment
  UC556333  Satureja douglasii Mrs. Emanuel Fritz 1935-1 Humboldt between Miranda and Dyerville (along Redwood Highway) Comment
  JEPS42981  Saxifraga ferruginea Jos. P. Tracy 1932-7-18 10710 Humboldt head of Brett Hole (Trinity Summit); , Brett Hole Comment
  SEINET8754002 Image available Scandix pecten-veneris Richard R. Halse 2015-1 9381 Humboldt Along U.S. Hwy. 101 ca. 2.5 miles southeast of Weott 123 Comment
  UCSB23755  Schoenoplectus pungens Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samosa on peninsula; on western side of Humboldt Bay Comment
  UC1541346  Scirpus acutus var. occidentalis Harold E. Parks Aug 1934 5156 a Humboldt Dry Lagoon Comment
  UC668015  Scirpus maritimus Joseph P. Tracy 1934-10-13 13684 Humboldt Big Lagoon Big Lagoon (near shore) 3 Comment
  SEINET3914801  Scirpus microcarpus Thomas W. Nelson, James Nelson 1976-7-28 3048 Humboldt Flora of the Lassics. At Alder Springs along 2S08.; 0 1554 Comment
  HSC38831  Scirpus microcarpus R. Sutherland 1976-8-13 20 .13876 Humboldt Redwood Creek, Whittemore Grove 87 Comment
  UCSB55386  Scirpus microcarpus Wolf, Carl 1937-9-11 Humboldt Redwood Highway, 3 mi. N of Orick at Davison's Ranch; on Prairie Creek 60 Comment
  HSC15632  Scoliopus bigelovii F. B. Plett 1963-4-24 30 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  CAS-BOT-BC517414  Scoliopus bigelovii Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  JEPS62101  Scoliopus bigelovii Lincoln Constance 1934-6-8 836 Humboldt Cow Creek fire-trail from Bull Creek rd. n. over the divide into the headwaters of Bear Creek; Bull Creek Region, S. Fork Eel R., Cow Creek fire-trail Comment
  UCSB15626  Scrophularia californica Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  HSC97100  Scutellaria antirrhinoides Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 4 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1364 Comment
  UC577323  Scutellaria antirrhinoides Joseph P. Tracy 1930-6-15 8763 Humboldt Dobbyn Creek 152 Comment
  HSC70891  Sedum laxum subsp. heckneri Gail Newton 1980-7-23 1707 Humboldt Near Packsaddle Ridge 1463 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
  UC667087  Sedum laxum subsp. heckneri Joseph P. Tracy 1927-5-15 8055 Humboldt near Hoopa Valley (Supply Creek, on barren rocky bluffs); Northern Coast Ranges, near Hoopa Valley 457 Comment
  HSC58165  Sedum obtusatum subsp. retusum G. L. Clifton, Griswold 1979-8-2 12231 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC65853  Sedum radiatum Gail Newton 1980-6-28 736 Humboldt Near Mad River Butte. 1536 Comment
  JEPS73714  Sedum spathulifolium L. R. Heckard with T. I. Chuang 1968-7-5 1988 Humboldt along Mail Ridge Road 4 1/2 mi n of its junction with the Harris Road (e of Garberville); e of Garberville Comment
  UC1225751  Sedum spathulifolium Joseph P. Tracy 1948-5-15 17981 1/2 Humboldt along Trinity Highway Willow Creek Canyon (on rocks at the East Fork Willow); East Fork Willow Creek, Willow Creek Canyon 457 Comment
  HSC6475  Sedum spathulifolium var. spathulifolium Lincoln Constance 1934-6-1 767 Humboldt S Fork Eel River, Bull Creek Rd. between Dyerville Bridge and Bull Creek Flat Grove. 46 Comment
  HSC95768  Selaginella kraussiana Gordon Leppig 2000-4-12 1290 Humboldt Arcata: behind Humboldt State University, at base of stump near Fern Lake spillway 49 Comment
  JEPS19021  Selaginella oregana Joseph P. Tracy 1920-10-24 5407 Humboldt near Korbel; Northern Coast Ranges 60 Comment
  CAS-BOT-BC69735  Selaginella wallacei Donald L. Branscomb 1957-12-26 s.n. Humboldt Look Out Rock, Patrick's Point. Comment
  JEPS37086  Senecio glomeratus Lincoln Constance 1934-6-25 926 Humboldt 4 mi n Dyerville (and <4 mi n?> of n boundary of Humboldt Redwood Park, on Redwood Highway); South Fork Eel River, Bull Creek Region, Englewood Comment
  UC1239501  Senecio glomeratus Joseph P. Tracy 1936-8-24 15173 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC1239503  Senecio glomeratus Joseph P. Tracy 1938-6-7 15856 Humboldt 5 mi se Korbel; Canyon Creek 152 Comment
  HSC48867  Senecio integerrimus Brad Klipfel 1973-6-10 62 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 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
  HSC76417  Senecio jacobaea D. K. Imper 1981-7-21 888 Humboldt Near Table Bluff 38 Comment
  UC1223151  Senecio sylvaticus Joseph P. Tracy 1949-8-11 18467 Humboldt 2 to 6 mi s from Grouse Mt. (s of crossing of electric power line, e of headwaters of Redwood Creek); Kinsey Ridge 1280 Comment
  UC1223153  Senecio sylvaticus Joseph P. Tracy 1941-8-17 16992 Humboldt near High Prairie (Bald Mountain); Bald Mountain Comment
  HSC58178  Senecio triangularis G. L. Clifton, Griswold 1979-8-2 12262 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 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
  CHSC55650  Sequoia sempervirens Dennis W. Morris 1991-4-24 20 Humboldt 2 mi e of Humboldt State Univ. in Redwood Park. Coastal mountains. 115 Comment
  JEPS48280  Sequoia sempervirens Mrs. Fay Howard 1929-10-5 Humboldt about 1 mi n Pepperwood (down the river) Comment
  SEINET10612372  Sequoia sempervirens Joseph P. Tracy 1940-10-17 Tracy 16770 Humboldt Dyerville 49 Comment
  UCD92873  Setaria viridis Joseph P. Tracy 1948-7-26 18078 Humboldt Trinity River Valley, at Willow Creek. Comment
  UC168950  Sherardia arvensis Joseph P. Tracy 1899-5-27 214 Humboldt Eureka Northern Coast Region (on Russ Claim) 0 Comment
  UC602550  Sherardia arvensis Joseph P. Tracy 1933-6-13 12560 Humboldt Bair's; Redwood Creek 609 Comment
  POM61723  Sidalcea malachroides Jos. Burtt Davy, Walter C. Blasdale 1899-6-13 5482 Humboldt Camp Grant Comment
  UC144092  Sidalcea malachroides J. P. Tracy 1909-7-4 3010 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  JEPS109836  Sidalcea malviflora subsp. patula Dean W. Taylor 2005-6-10 19343 Humboldt Bear River Ridge, along the Mattole Road 3 road miles North (uphill) from Capetown 335 Comment
  POM264602  Sidalcea malviflora subsp. patula H. E. Parks 1940-05 24177 Humboldt Dow s Prairie 30 Comment
  HSC103774  Silene bolanderi M. R. Mesler 2014-6-4 1636 Humboldt Burr Valley Road near Dinsmore 1117 Comment
  RSA46875  Silene californica Doris K. Kildale 1927-7-22 3816 Humboldt Lasseck s Peaks Comment
  UC419028  Silene californica H. E. Parks May 1930 751 Humboldt vicinity Hydesville; vicinity of Hydesville Comment
  HSC56939  Silene campanulata Overton, Butler 1979-7-23 9418 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  UC668093  Silene campanulata Joseph P. Tracy 1932-7-18 10704 Humboldt head of Brett Hole Trinity Summit, head of Brett Hole 1828 Comment
  UC668096  Silene campanulata Joseph P. Tracy 1937-7-29 15591 Humboldt w slope near top South Fork Mountain (at Hyampom Trail); , at Hyampom Trail 1676 Comment
  HSC32481  Silene campanulata subsp. glandulosa Bonnie Prange 1974-5-18 Humboldt Off Hwy. 299 at China Slide. Comment
  HSC70980  Silene campanulata subsp. glandulosa Gail Newton 1980-7-22 1665 Humboldt Near Devils Backbone 231 Comment
  UC183591  Silene campanulata subsp. glandulosa Joseph P. Tracy 1913-6-15 4140 Humboldt near summit of ridge between Van Duzen and Mad Rivers (on Dinsmore's Ranch); Northern Coast Ranges, btw Van Duzen and Mad Rivers 1066 Comment
  CAS-BOT-BC384425  Silene coronaria Volney Rattan 1878-1-1 s.n. Humboldt Hoopa Valley Comment
  HSC100417  Silene gallica Carl C. Marshall May 1885 73 Humboldt Dry soils, roadsides, etc. Comment
  HSC63145  Silene grayi M. A. Baker 1979-6-27 937 Humboldt Below Trinity Summit at head of Oregon Creek Comment
  HSC100709  Silene hookeri Carl C. Marshall Jun 1886 10 Humboldt S Fork Mtn. near summit. Comment
  POM193013  Silene hookeri subsp. bolanderi H. E. Parks, Joseph P. Tracy 1930-5-25 0791 Humboldt Laribee Valley. 793 Comment
  POM264849  Silene hookeri subsp. bolanderi Lincoln Constance, A. A. Beetle, Joseph P. Tracy 1940-5-17 2612 Humboldt Edge of Quercus Garryana grove, rocky knolls on N slope. McClellan Mtn, near Eureka 823 Comment
  HSC56422  Silene laciniata subsp. californica Griswold, Butler 1979-7-10 7104 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC60133  Silene laciniata subsp. californica M. A. Baker 1978-5-6 479 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  CAS-BOT-BC389062  Silene laciniata subsp. californica A. M. Vollmer; L. Beane 1951-6-6 126 Humboldt On road between Orick and Weitchpec Comment
  HSC91612  Sinapis arvensis E. Mackey 1986-12-18 Humboldt Patrick's Point State Park, along Patrick's Point Drive Comment
  UC160974  Sisymbrium officinale Joseph P. Tracy 1908-6 2808 Humboldt Valley of Van Duzen River (opposite Buck Mountain); Northern Coast Ranges 762 Comment
  HSC23120  Sisyrinchium bellum Norman Dennis 1965-6-8 112 Humboldt 0.25 mi. S and 1 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county road, along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  HSC13933  Sisyrinchium californicum D. E. Anderson 1961-9-9 1798 Humboldt Big Lagoon County Park Comment
  HSC48534  Sisyrinchium californicum Mark Flippo 1978-4-18 25 Humboldt McKinleyville, Bella Vista Hill Comment
  UC1134655  Smilacina racemosa R. Stahelin 1933-5-15 L.H. 23 Humboldt Freshwater Eureka Quadrangle (T.P.L. Co.) Comment
  CDA39387  Smilacina stellata Kaylea Eickhoff, Cara M. Witte 2005-6-1 8 Humboldt Coldspring Camp, 7.4 mi. south of Hwy. 299 on NF1. Comment
  UC1196152  Solanum umbelliferum Joseph P. Tracy 1935-7-20 14325 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1828 Comment
  CAS-BOT-BC365442  Solidago elongata Ira L. Wiggins 1932-7-25 5895 Humboldt Roadsides near McKinleyville Comment
  HSC57982  Solidago elongata G. L. Clifton, Griswold 1979-7-31 11716 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC91905  Solidago elongata E. Mackey 1986-7-21 Humboldt Patricks Point State Park; Palmer's Point Comment
  UC1199323  Solidago elongata Joseph P. Tracy 1940-9-26 16735 Humboldt near Still Ranch (2 mi s of Fields Landing) 9 Comment
  UC302291  Solidago elongata Joseph P. Tracy 1926-7-25 7749 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  UC535089  Solidago elongata H. E. Parks 1931-7 1056 Humboldt Trinidad 76 Comment
  CHSC55885  Solidago spathulata L. P. Janeway 1987-7-31 2545 Humboldt Vicinity of Eureka; North Spit of Humboldt Bay near the SE corner of Eureka City Airport. On dunes. 3 Comment
  HSC40262  Solidago spathulata Linda M. Barker 1976-8-2 1670 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  RSA21022  Solidago spathulata C. B. Wolf 1937-9-12 9332 Humboldt Clam Beach. 8 Comment
  SD117466  Solidago spathulata Robert F. Thorne 1974-7-29 45070 Humboldt Samoa Dunes Comment
  CAS-BOT-BC364968  Solidago velutina subsp. californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC6179  Solidago velutina subsp. californica J. P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC673080  Solidago velutina subsp. californica Joseph P. Tracy 1940-8-18 16701 Humboldt South Fork Eel River near Bolling Grove; South Fork Eel River 91 Comment
  BLMAR757  Solidago velutina subsp. californica Jennifer Wheeler 2013-9-4 757 Humboldt King range, strawberry rock grazing allotment 252 Comment
  HSC6220  Sonchus asper Paul Shields 1955-6-16 Humboldt HSC Campus Comment
  UC582434  Sonchus asper Joseph P. Tracy 1932-5-22 10115 Humboldt between Miranda and Redway; North Coast Ranges, South Fork Eel River 91 Comment
  HSC89522  Sonchus asper M. Roantree 1985-6-10 79 Humboldt W side of Trinidad Head Comment
  SEINET200988  Sonchus oleraceus Joseph P. Tracy 1903-8-2 sn Humboldt At Eureka 0 Comment
  CAS-BOT-BC374596  Sonchus oleraceus F. J. Kirby 1958-7-1 s.n. Humboldt West of Bridgeville 152 Comment
  UC1099915  Sparganium emersum var. emersum Malcolm A. Nobs and S. Galen Smith 1949-8-9 1228 Humboldt 1 mi n Arcata (at junction of Highway 101 and Highway 299); Mad River Valley Comment
  UC176175  Sparganium erectum subsp. stoloniferum Joseph P. Tracy 1912-10-20 3987 Humboldt Loleta Northern Coast Ranges, Eel Valley (lower Eel Valley) 15 Comment
  RSA244949  Spartina densiflora D. E. Anderson 1963-9-15 2814 Humboldt Humbolt Bay Comment
  HSC37941  Spergula arvensis Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  HSC83996  Spergula arvensis L. P. Janeway, C. K. Geldin-Meyers 1983-4-15 221 Humboldt Field around the new Science and Engineering Bldg., HSU campus 30 Comment
  CAS-BOT-BC390305  Spergularia macrotheca var. macrotheca A. A. Heller 1923-7-9 13780 Humboldt Flat between Eureka and Arcata Comment
  HSC99821  Spergularia rubra J. O. Sawyer 1980-7-18 3590 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC70955  Spergularia rubra Thomas W. Nelson 1977-6-15 3430 Humboldt Along FS Rd. 6N01 about 1 mi. S of junction with FS Rd. 5N10 1372 Comment
  JEPS45003  Spiraea densiflora Joseph P. Tracy 1926-6-20 7630 Humboldt Horse Mountain; Northern Coast Ranges 1463 Comment
  HSC19751  Spiraea douglasii Paul Shields 1955-10-7 Humboldt Essex Pond, near Fieldbrook Comment
  UCD114050  Spiraea douglasii Linda M. Barker 1976-6-14 1600 Humboldt 3 miles west of Arcata. Comment
  SEINET11919281  Spiraea douglasii H. P. Chandler 1901-1 1197 Humboldt Humboldt Bay Comment
  UCSB26682  Spiraea douglasii Havlik, Neil 1968-8-21 Humboldt south end of Big Lagoon, north of Trinidad 1 Comment
  UC666992  Spiranthes porrifolia Joseph P. Tracy 1937-8-15 15667 Humboldt 15 mi e Orick (Bald Hills); Bald Hills 914 Comment
  HSC16658  Spiranthes romanzoffiana J. Wendell Howe 1934-7-20 1311 Humboldt Arcata Comment
  RSA245280  Spiranthes romanzoffiana J. D. Ackerman 1973-8-29 119 Humboldt Big Lagoon Beach Co. Park; 8 miles N of Trinidad. Comment
  HSC59648  Spirodela polyrhiza Michael Dalke 1979-5-18 91 Humboldt Hwy. 101, Clam beach pond 0 Comment
  CHSC804  Stachys ajugoides var. rigida 1941-5-30 Humboldt Comment
  JEPS63030  Stachys ajugoides var. rigida Joseph P. Tracy 1936-6-8 14874 Humboldt Trinidad 3 Comment
  UC577326  Stachys ajugoides var. rigida Joseph P. Tracy 1937-8-12 15652 Humboldt Snow Camp 1402 Comment
  JEPS62955  Stachys ajugoides var. rigida W. L. Jepson 1932-8-8 16481 Humboldt head Canoe Creek; Grasshopper Peak 1066 Comment
  UC1222860  Stachys ajugoides var. rigida Joseph P. Tracy 1950-6-8 18742 Humboldt near Petrolia (at crossing of river, hills between town and Ocean); Bear River 30 Comment
  UC1239725  Stachys ajugoides var. rigida Joseph P. Tracy 1943-7-11 17434 Humboldt Park's garden Trinidad 3 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
  UC162688  Stachys ajugoides var. rigida Joseph P. Tracy 1911-7-11 3515 Humboldt hills along Supply Creek Northern Coast Ranges, Hoopa Valley 182 Comment
  UC668219  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  UCLA70858  Stachys ajugoides var. rigida Joseph Andorfer Ewan 1937-7-29 10773 Humboldt Richardson Grove South Fork Eel River Comment
  RSA26844  Stachys chamissonis I. L. Wiggins 1940-7-10 9489 Humboldt Table Bluff Comment
  SDSU7904  Stachys chamissonis Harvey 1938-8-13 2269 Humboldt North of Arcata. Comment
  RSA0074167  Stachys chamissonis T. S. Elias, Barbara A. Elias 1987-8-26 10631 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge. Comment
  HSC54587  Stachys rigida var. rigida Overton, Butler 1979-7-24 9651 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC58159  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-8-2 12219 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  UC1191454  Stellaria borealis subsp. sitchana Malcolm A. Nobs and S. Galen Smith 1949-8-9 1245 Humboldt Clam Beach Comment
  HSC100419  Stellaria longipes Carl C. Marshall May 1886 227 Humboldt Near H. and S to mill E of Arcata. Comment
  HSC91609  Stellaria media E. Mackey 1987-1-17 Humboldt Patricks Point State Park, near Wedding Rock. Comment
  HSC6235  Stephanomeria exigua Richard Spjut 1968-11-2 256 Humboldt On the SW slope of Chaparral Mtn. 915 Comment
  HSC6230  Stephanomeria virgata John Warner Hosking 1968-10-10 Humboldt Hwy. 299, 30 mi. W of Willow Creek Comment
  HSC40608  Stipa lemmonii Thomas W. Nelson 1976-6-14 2702 Humboldt S of Lassic Peak (Signal Peak) 1646 Comment
  HSC65856  Streptanthus tortuosus Gail Newton 1980-6-28 687 Humboldt Near Mad River Butte. 1536 Comment
  HSC6946  Streptanthus tortuosus R. Spellenberg 1965-6-14 1130 Humboldt S of airport, 5 mi. E of Kneeland Comment
  HSC74747  Streptanthus tortuosus Gail Newton 1981-7-24 2292 Humboldt Near Chaparral Mtn. 1512 Comment
  HSC103406  Streptanthus tortuosus var. orbiculatus Eric Schori, Kazuyuki Ishimaru 2005-6-24 14 Humboldt Along Titlow Hill Road south of Hwy. 299, past Buck Flat. 1375 Comment
  HSC58186  Swertia radiata G. L. Clifton, Griswold 1979-8-2 12275 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA1901  Symphoricarpos albus var. laevigatus C. B. Wolf 1930-10-29 1038 Humboldt Old Coast Road at Honeydew Post Office. 152 Comment
  HSC48480  Symphoricarpos mollis Brad Klipfel 1974-9-7 569 Humboldt Horse Mtn. area, creek flowing into E Fork of Willow Creek. Comment
  JEPS40849  Symphyotrichum bracteolatum Joseph P. Tracy 1921-9-4 5954 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley, South Fork of T 152 Comment
  HSC38332  Symphyotrichum chilense Peter Sorensen 1976-8-8 Humboldt King Salmon Comment
  UCD136539  Symphyotrichum chilense Collector unknown Date unknown s.n. Humboldt exact location unknown. Comment
  CDA5590  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
  UC1198057  Synthyris reniformis Joseph P. Tracy 1930-6-15 Humboldt Larrabee Creek near Bosworth's; Northern Coast Ranges 457 Comment
  HSC21147  Synthyris reniformis J. P. Tracy 1906-4-15 2408 Humboldt Bald Mtn., 3 mi. E of Korbel 610 Comment
  HSC21154  Synthyris reniformis D. E. Anderson 1965-4-24 3542 Humboldt 0.5 mi. from Jct. 299 along Titlow Hill Rd. Comment
  UC1198059  Synthyris reniformis Joseph P. Tracy 1909-5-16 2969 Humboldt Coast bluffs 3 mi n Trinidad; Northern Coast Ranges 30 Comment
  UC127603  Tanacetum camphoratum J. Burtt Davy 1899-6-30 6183 Humboldt near Ferndale (North Coast Ranges); North Coast Ranges Comment
  POM289716  Tanacetum douglasii Lyman Benson 1928-7-10 452 Humboldt Clam Beach, Trinidad. 15 Comment
  SBBG65853  Tanacetum vulgare R. Hartwell 1938-8-4 Humboldt near Ferndale Comment
  UC581790  Tanacetum vulgare Joseph P. Tracy 1929-10-1 8675 Humboldt Eureka 15 Comment
  CAS-BOT-BC376895  Taraxacum officinale Doris K. Kildale 1926-5-24 1683 Humboldt Ryan Slough near Occidental Ranch Comment
  UC642289  Tauschia kelloggii Joseph P. Tracy 1936-8-2 15079 Humboldt French Camp Ridge 1066 Comment
  HSC59852  Tauschia kelloggii M. A. Baker 1979-7-6 1007 Humboldt Just past the 4 mi. marker on Eyesee Rd. from Hwy. 96 Comment
  UC154074  Tauschia kelloggii Joseph P. Tracy 1908-6-7 2607 Humboldt on Mad River at Maple Creek; Northern Coast Ranges, Mad River, Maple Creek 152 Comment
  HSC55212  Taxus brevifolia Walter Overton 1979-8-1 12351 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC64873  Tellima grandiflora J. P. Smith 1973-5-26 6847 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UCSB24358  Tellima grandiflora Tracy, Joseph 1935-7-23 Humboldt Trinity Summit; Lower End of Brett Hole 1584 Comment
  HSC35757  Thermopsis gracilis Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-7-15 2000 Humboldt French Camp, Bald Hills. Comment
  CHSC10101  Thermopsis macrophylla D. E. Anderson 1965-5-15 36926 Humboldt About 7 miles north of Hoops on Bloody Camp Prairie road. 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
  UC1198809  Thlaspi montanum var. montanum Harold E. Parks and Joseph P. Tracy 1934-6-14 11029 Humboldt Horse Mt. 1402 Comment
  UC1198812  Thlaspi montanum var. montanum Joseph P. Tracy 1911-7-11 3516 Humboldt hills along Supply Creek (Hupa Valley); Northern Coast Ranges, , Supply Creek 304 Comment
  CAS-BOT-BC88327  Thysanocarpus curvipes Mark Bransom; Daniel Brown; Ron Hildebrandt; Nina Meiselman 1986-4-19 30 Humboldt Across Route 299 from sign for White's Bar Picnic area. Comment
  UC858903  Tiarella trifoliata var. unifoliata Elizabeth Parsons Hawver Jun 1905-June 1915 Humboldt Carlotta Comment
  CAS-BOT-BC436913  Tiarella trifoliata var. unifoliata Ira L. Wiggins 1930-7-22 4594 a Humboldt Redwood Creek between Blue Lake and Willow Creek Comment
  CAS-BOT-BC436915  Tiarella trifoliata var. unifoliata C. C. Harris; S. K. Harris 1936-6-16 660 Humboldt Yager Road from Carlotta 152 Comment
  JEPS49714  Tiarella trifoliata var. unifoliata Milo S. Baker 1923-7-19 82 c Humboldt canyon near Carlotta; canyon near Carlotta Comment
  HSC38208  Tolmiea diplomenziesii Thomas W. Nelson, J. P. Smith 1976-4-25 2382 Humboldt Brazil Ranch E of Hwy. 101 near College of the Redwoods Comment
  HSC70846  Tolmiea diplomenziesii M. A. Baker 1980-6-7 1827 Humboldt Near Ammon Creek 732 Comment
  CAS-BOT-BC447611  Tolmiea menziesii J. P. Tracy 1900-5-30 832 Humboldt Immediate vicinity of Eureka 152 Comment
  UC169326  Tonella tenella Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5388 Humboldt near Hubbard's Station; North Coast Ranges Comment
  CAS-BOT-BC81364  Torreya californica Dr. A. Kellogg; W. G. W. Harford 1868-9 942 Humboldt unspecified 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
  UC582683  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC377100  Tragopogon porrifolius Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC56236  Trautvetteria caroliniensis Walter Overton 1979-8-1 12318 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  JEPS5769  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1937-7-25 15564 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC44328  Trichostema laxum Thomas W. Nelson, Jane P. Nelson 1977-8-6 3700 Humboldt Above Alder Spring 1616 Comment
  JEPS63152  Trichostema oblongum Joseph P. Tracy 1921-8-21 5936 Humboldt Trinity River Valley near Willow Creek Northern Coast Ranges 152 Comment
  JEPS63170  Trichostema oblongum Joseph P. Tracy 1927-8-7 8327 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  RSA167428  Trichostema oblongum Joseph P. Tracy 1950-8-8 19284 Humboldt Croghan Hole, on Trinity Summit 1677 Comment
  HSC73246  Trientalis latifolia M. Baker 1980-5-18 1326 Humboldt Near Black Mtn. 1006 Comment
  RSA69006  Trientalis latifolia F. W. Peirson 1923-7-9 s.n. Humboldt first summit on road between coast and Eel River Comment
  UC495670  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1932-5-1 9894 A Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  JEPS65949  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1932-5-10 9940 Humboldt 3 mi s Point of Cape Mendocino (sw slopes fronting the ocean); Northern Coast Ranges Comment
  UC160920  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1906-7-4 2535 Humboldt near Hydesville (Yager Creek); Northern Coast Ranges 60 Comment
  UC1223375  Trifolium arvense Joseph P. Tracy 1941-7-26 16970 Humboldt near 9th (G Street); Eureka Comment
  UC1223514  Trifolium barbigerum Joseph P. Tracy 1942-6-15 17120 Humboldt Englewood Prairie Comment
  UC495641  Trifolium ciliolatum Joseph P. Tracy 1929-5-5 8567 Humboldt Phillipsville Northern Coast Ranges, South Fork Eel River 121 Comment
  UC1197051  Trifolium dubium Joseph P. Tracy 1914-6-14 4502 Humboldt near Hydesville; Northern Coast Ranges 60 Comment
  UC1223457  Trifolium fucatum Joseph P. Tracy 1935-5-25 13831 Humboldt Blocksburg Comment
  UC495735  Trifolium fucatum Joseph P. Tracy 1927-5-8 7992 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  UC1223459  Trifolium fucatum Joseph P. Tracy 1933-5-20 12221 Humboldt s point of cape (near ocean shore); Cape Mendocino Comment
  HSC15183  Trifolium gracilentum Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  RSA168894  Trifolium gracilentum Joseph P. Tracy 1933-5-20 12233 Humboldt 4 miles south of Cape Mendocino. Comment
  SD73200  Trifolium incarnatum Darley F. Howe 1969-6-3 4623 Humboldt 13 miles north of Orick on Hwy 101 Comment
  UCD111290  Trifolium longipes subsp. oreganum Tofsrud 1948-9-1 s.n. Humboldt Road junction near summit of Horse Mt. 1463 Comment
  HSC44837  Trifolium longipes subsp. oreganum Thomas W. Nelson, Jane P. Nelson 1977-6-19 3500 Humboldt Above Alder Springs, N of pond 1585 Comment
  JEPS33182  Trifolium longipes var. oreganum Joseph P. Tracy 1926-6-20 7608 Humboldt Horse Mtn Northern Coast Ranges Comment
  UC1223360  Trifolium macraei Joseph P. Tracy 1936-5-30 14841 Humboldt Samoa Sand Dunes Comment
  UC495662  Trifolium macraei Joseph P. Tracy 1932-5-10 9935 Humboldt Bear River edge Northern Coast Ranges 609 Comment
  HSC38068  Trifolium microdon Thomas W. Nelson, Jane P. Nelson 1976-5-30 2639 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC1197551  Trifolium microdon Joseph P. Tracy 1932-5-1 9892 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  SEINET12157235  Trifolium microdon J. P. Tracy 1936-1 14840 Humboldt nr Samoa, on Humboldt Bay 6 Comment
  UC495696  Trifolium microdon Joseph P. Tracy 1927-6-5 8102 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC594252  Trifolium microdon S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3448 Humboldt nw slopes Buck Mtn Comment
  SEINET4178759 Image available Trifolium obtusiflorum Unknown 1932-6-14 10153 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC2108  Trifolium pratense Paul Shields 1955-6-10 Humboldt HSU campus Comment
  HSC23489  Trifolium pratense R. A. Vanbianchi 1971-9-24 89 Humboldt Comment
  HSC15165  Trifolium repens Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  HSC99477  Trifolium repens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 135 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UCD109439  Trifolium variegatum W. A. Williams 1951-5-8 s.n. Humboldt location unknown. Comment
  SEINET12156857  Trifolium variegatum L. K. Henry 1971-1 s.n. Humboldt along Rt 36, 2 mi E of Dinsmor in Six Rivers Nat'l Forest Comment
  UC169345  Trifolium variegatum var. melananthum Joseph P. Tracy 1912-6-30 3714 Humboldt Eureka Northern Coast Region 0 Comment
  HSC15177  Trifolium willdenovii D. E. Anderson 1965-5-8 3643 Humboldt About 2 mi. N of Willow Creek on the road running along E side of Trinity River Comment
  HSC97537  Trifolium willdenovii Ivy Watson 2008-9-28 25 Humboldt Beach N of river mouth, along small tributary E of sand dunes 4 Comment
  UC1197517  Trifolium willdenovii Joseph P. Tracy 1932-6-4 10131 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC1197520  Trifolium willdenovii Joseph P. Tracy 1911-6-25 3261 Humboldt Bucksport Northern Coast Ranges 0 Comment
  RSA639406  Trifolium wormskioldii Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-7 35225 b Humboldt Samoa Peninsula. 3 Comment
  HSC59120  Triglochin maritima Terry Roth 1979-4-28 18 Humboldt End of H St. in Arcata 0 Comment
  UC146219  Trillium albidum Joseph P. Tracy 1905-4-2 2155 Humboldt region about Humboldt Bay near Arcata; Northern Coast Region, Humboldt Bay 0 Comment
  UC176697  Trillium albidum Joseph P. Tracy 1913-6-25 4333 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen R. 762 Comment
  HSC15695  Trillium ovatum Francis Winter 1960-5-23 Humboldt 2 mi. E of Korbel, Korbel-Maple Creek Rd. 183 Comment
  SEINET3888783  Trillium ovatum Michael Dalke 1979-3-31 8 Humboldt Eureka Quadrangle- Azalea Park 2 miles E of U.S. 101.; 0 24 Comment
  CAS-BOT-BC521319  Trillium rivale Volney Rattan 1883-6-1 s.n. Humboldt Willow Creek; Pacific Coast Comment
  JEPS11786  Triodanis biflora Lincoln Constance 1934-6-4 818 Humboldt Look Prairie Bull Creek Region (and Bull Cr. road to Dyerville, South Fork Eel River); South Fork Eel River, , Look Prairie Comment
  SEINET10459891  Triodanis perfoliata Tracy TRACY 2197 Humboldt EUREKA Comment
  HSC20851  Triphysaria eriantha subsp. eriantha R. T. Forester 1963-3-2 26 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  JEPS26224  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1899-4-9 136 Humboldt region about Humboldt Bay Bucksport; Northern Coast Region, region about Humboldt Bay 0 Comment
  UC902254  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1941-4-2 16805 Humboldt near Samoa (on Humboldt Bay, Sand Dunes); on Humboldt Bay 6 Comment
  CHSC31269  Triphysaria eriantha subsp. rosea Mark Stopher 1980-4-2 45 Humboldt In sand dunes on Samoa Oeninsula near Humboldt Bay. 4 Comment
  UC902248  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1944-5-14 17469 Humboldt Eureka 6 Comment
  HSC27022  Triphysaria versicolor subsp. versicolor Brad Klipfel 1972-5-5 1 Humboldt S of Lanphere's barn, Humboldt Bay Comment
  UC162562  Triphysaria versicolor subsp. versicolor Joseph P. Tracy 1911-6-11 3237 Humboldt near Trinidad; Northern Coast Ranges, near Trinidad 60 Comment
  RSA10081  Trisetum canescens Joseph P. Tracy 1926-6-6 7557 Humboldt Northern Coast Ranges, Hoopa Mountain, near summit on road west from Hoopa to Bair's. 1067 Comment
  HSC32517  Trisetum cernuum D. E. Anderson, S. Dowty, T. Nelson 1972-6-17 5711 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC526694  Trisetum cernuum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9001 Humboldt McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC32556  Triteleia hyacinthina Thomas W. Nelson 1973-7-10 1034 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  HSC3059  Triteleia laxa Lincoln Constance 1934-5-29 710 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  SEINET181190  Triteleia laxa Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-8 15085 Humboldt 5 miles north of Garberville Comment
  UC15047  Triteleia laxa Harley P. Chandler May 1901 1247 Humboldt Redwood Belt North Coast Ranges 152 Comment
  RSA183022  Triteleia laxa Lee W. Lenz 1966-5-24 24657 Humboldt W of Berry Summit, US 299. Comment
  CAS-BOT-BC85898  Tsuga heterophylla Doris K. Kildale 1928-3-27 4361 Humboldt Top of Liscom Hill 792 Comment
  HSC49358  Tsuga heterophylla Thomas W. Nelson, Jane P. Nelson 1979-9-10 5065 Humboldt Old logging rd. S of Lundbar Hills section of Eureka 49 Comment
  SBBG11120  Tsuga heterophylla D. E. Breedlove 1961-7-4 669 Humboldt US Hwy 299, 4.1 mi E of the N fork of the Mad River 609 Comment
  UC1134186  Tsuga heterophylla H. S. Yates 1936-6-18 5738 Humboldt 10 mi s of the Klamath River Orick Quadrangle 60 Comment
  UCD67633  Tsuga heterophylla D. Sanchez-Mata 1996-6-27 s.n. Humboldt Blue Lake. Mad River. 175 Comment
  CAS-BOT-BC91110  Umbellularia californica Doris K. Kildale 1927-2-28 2987 Humboldt Bug Creek. Upper Mad River. 792 Comment
  HSC40296  Umbellularia californica Lloyd Simpson 1977-4-17 253 Humboldt Warren Creek Rd. 0.25 mi. from West End Rd. 30 Comment
  HSC49395  Umbellularia californica R. York 1979-4-16 235 Humboldt Corner of 12th and D in Arcata Comment
  HSC97590  Umbellularia californica Steven Lee 2004-4-26 32 Humboldt Horse Mtn., 4 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  UC562349  Vaccinium cespitosum Joseph P. Tracy 1930-8-17 9161 Humboldt Big Lagoon Northern Coast Region 6 Comment
  CAS-BOT-BC199305  Vaccinium ovatum Doris K. Kildale 1927-5-7 3115 Humboldt Elk Ridge Comment
  CAS-BOT-BC199324  Vaccinium ovatum L. R. Abrams 1918-6-16 7188 Humboldt Willow Creek Comment
  CAS-BOT-BC199326  Vaccinium ovatum H. E. Parks; S. T. Parks 1937-4-1 5638 Humboldt Spruce Cove, Trinidad Comment
  SBBG21991  Vaccinium ovatum R. F. Thorne 1957-9-2 18997 Humboldt Burlington State Park, just S of Weott Comment
  CAS-BOT-BC199412  Vaccinium parvifolium E. K. Balls 1949-7-11 13973 Humboldt 35 miles west of Willow Creek on Hwy 299 to Arcata 152 Comment
  HSC48405  Valeriana sitchensis subsp. sitchensis Brad Klipfel 1973-6-10 108 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC416773  Valeriana sitchensis subsp. sitchensis Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5839 Humboldt Trinity Summit; North Coast Ranges Comment
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May 9 2008
  HSC102568  Vancouveria hexandra M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1555 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC854707  Vancouveria hexandra Elizabeth Parsons Hawver June 1915 Humboldt Carlotta Comment
  HSC99004  Vancouveria hexandra Cara Witte 2008-8-16 1026 Humboldt Ammon Ridge Road. Approximately 1/4 mile east of intersection with National Forest 1. 1548 Comment
  HSC70385  Vancouveria planipetala M. A. Baker 1980-6-7 1860 Humboldt Near Ammon Creek. 732 Comment
  UC161073  Vancouveria planipetala Joseph P. Tracy 1911-7-7 3420 Humboldt Brannan Mountain viz. ridge n of Willow Creek between Willow and Campbell Creeks (near the summit); Northern Coast Ranges, Brannan Mountain, n Willow Creek 1219 Comment
  UCR52470  Vancouveria planipetala J. O. Sawyer, R. J. Cole 1977-7-3 3003 Humboldt Environs of Mud Sprng. Big Hill Road (F.S. 8N01) 1246 Comment
  JEPS33032  Vancouveria planipetala Lincoln Constance 1934-5-23 603 Humboldt s slope of mt. above Look Prairie Bull Creek area (Bull Creek area); , above Look Prairie 365 Comment
  UC1222525  Veratrum californicum var. californicum Joseph P. Tracy 1950-6-25 18878 Humboldt nw slope Buck Mountain; Burr Valley 1066 Comment
  JEPS80003  Veratrum insolitum Joseph P. Tracy 1929-7-4 8636 Humboldt French Camp Ridge 1066 Comment
  JEPS11185  Verbascum blattaria Lincoln Constance 1934-5-26 658 Humboldt South Fork of Eel River s end Dyerville Bridge (Bull Creek Region); South Fork Eel River, Bull Creek Region 45 Comment
  CDA30687  Verbascum virgatum M. K. Beyers, I. Shepardson 2009-9-13 247 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
  HSC28222  Veronica americana John R. Keith 1973-5-15 Humboldt Abandoned log pond about 200 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  JEPS16826  Veronica americana Joseph P. Tracy 1937-7-2 15389 Humboldt ne of Hawkins Bar (Happy Camp Mountain in Trinity Summit Range); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC27733  Veronica peregrina subsp. xalapensis C. C. Marshall 1888-1 Humboldt Eel River Region Comment
  HSC56097  Veronica serpyllifolia subsp. humifusa G. L. Clifton 1979-7-31 11807 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC61645  Veronica serpyllifolia subsp. humifusa Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  UC147903  Veronica serpyllifolia subsp. humifusa J. P. Tracy 1900-5-22 797 Humboldt immediate vicinity of Eureka 0 Comment
  HSC72498  Veronica serpyllifolia subsp. humifusa J. P. Smith, Steve Selva 1970-6-30 4135 Humboldt Comment
  JEPS29848  Vicia benghalensis Rimo Bacigalupi, and L. Heckard, J. Weiler 1961-6-23 7838 Humboldt about 1 mi w Carlotta (about 0.5 mi e of Hydesville) Comment
  HSC15270  Vicia gigantea W. F. Nickel 1965-5-15 Humboldt 1/4 mi. E of Arcata on road to Arcata Reservoir Comment
  UC1222590  Vicia hirsuta Joseph P. Tracy 1944-6-10 17474 Humboldt Eureka Comment
  UCSB16530  Vicia hirsuta 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
  HSC15262  Vicia hirsuta W. F. Nickel 1965-4-22 Humboldt N Arcata on E side of Hwy. Comment
  UCR84714  Vicia sativa Kathy Harper 1992-5-14 s.n. Humboldt Coast Range, Van Duzen River, c. 1.5 mi. west of Bridgeville on State Hwy 36 195 Comment
  CAS-BOT-BC263938  Viola adunca Doris Kildale 1931-5-10 10582 Humboldt Snow Camp Comment
  RSA114998  Viola adunca E. K. Balls, Lee W. Lenz 1955-5-15 20739 Humboldt 13.5 miles SW from Ferndale along Old Coast road to Capetown. 335 Comment
  HSC44774  Viola hallii Thomas W. Nelson, Jane Nelson 1977-6-19 3498 Humboldt Along the old trail above Alder Springs 1555 Comment
  JEPS50441  Viola ocellata Joseph P. Tracy 1922-4-30 6034 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC71027  Viola ocellata Thomas W. Nelson 1977-4-20 3319 Humboldt Along FS 1N15 between Hwy. 36 and summit 915 Comment
  UC1121616  Viola praemorsa subsp. praemorsa R. Stahelin 1933-5-17 Humboldt Kneeland Prairie Comment
  UC66202  Viola purpurea subsp. purpurea Joseph Burtt Davy and Walter C. Blasdale 1899-5 5660 Humboldt North Coast Ranges; ; Summit of ridge, Hoopa Mt., from Bairs to Hoopa Comment
  HSC21856  Viola sempervirens H. E. Parks, S. T. Parks Apr 1944 24268 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC49693  Viola sempervirens J. O. Sawyer 1977-4-23 2842 Humboldt Dagsaw Spring on road to Onion Mtn. Comment
  RSA244947  Viola sempervirens Norman Dennis 1965-5-8 55 Humboldt 0.1 mile west of Lord Ellis Summit on Hwy 299. Comment
  RSA46480  Viola sempervirens Doris K. Kildale 1927-3-19 2901 Humboldt Luffenholtz Creek. Comment
  UC1197981  Vitis californica Joseph P. Tracy 1926-9-6 7797 Humboldt Trinity River Valley Northern Coast Ranges (near the South Fork) 182 Comment
  SEINET10918233  Vitis californica Unknown 1988-7-25 Anonymous s.n Humboldt Hwy Am [P--], Chestnut & Drew Comment
  CAS-BOT-BC198763  Vulpia bromoides Doris K. Kildale 1926-5-2 1857 Humboldt Willow Creek Flat, Trinity River Valley 152 Comment
  HSC104101  Vulpia bromoides Kyle Brown 2015-4-25 50 Humboldt Arcata, trail along the Mad River 8 Comment
  UC1607841  Vulpia bromoides H. E. Parks May 1933 4306 Humboldt Trinidad district, Spruce Cove Comment
  SEINET11683266  Vulpia bromoides K. S. Erdman 1970-1 4809 Humboldt Gold Bluff Beach about 3 mi NW of Berry Glen and US 101 (Redwood N.P.) Comment
  CHSC19731  Vulpia microstachys D. E. Anderson; J. O. Sawyer, J. P. Smith 1970-5-10 5070 Humboldt Ca. 3 miles west of Willow Creek along Three Creeks Road. Comment
  CDA28607  Vulpia microstachys var. ciliata G. F. Hrusa 1993-6-17 11224 Humboldt Red Mountain; Entrance gate to Red Mt. Comment
  UC1103720  Vulpia microstachys var. microstachys Joseph P. Tracy 1926-5-2 7441 1/2 Humboldt near The South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1103717  Vulpia microstachys var. pauciflora Joseph P. Tracy 1913-6-19 4201 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC9929  Vulpia myuros C. R. Ball, J. P. Tracy, H. E. Parks 1932-5-17 1344 Humboldt Trinity River, near bridge on Trinity Highway 152 Comment
  HSC9939  Vulpia myuros R. H. Berg 1963-4-18 54 Humboldt Arcata Bottoms, Arcata. Comment
  UCD94898  Vulpia myuros var. hirsuta A. Murphy 1951-4-2 s.n. Humboldt along Highway 101, 0.75 mile south of Phillipsville. Comment
  CAS-BOT-BC128815  Whipplea modesta L. R. Abrams 1918-6-16 7145 Humboldt Lower arid Transition Zone, Willow Creek Comment
  HSC20440  Whipplea modesta S. S. Stutz 1963-3-24 8 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  HSC45649  Whipplea modesta Diane L. Reed 1978-4-22 9 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 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
  HSC35285  Woodwardia fimbriata Lon Hall 1975-3-27 296 Humboldt Near Shelter Cove at edge of Bear Creek 366 Comment
  POM281864B  Woodwardia fimbriata Lyman Benson 1928-7-9 396 Humboldt Weott Ranger Station. Seaward N Coast Range, S Fork Eel River watershed. 61 Comment
  CAS-BOT-BC382927  Wyethia angustifolia D. E. Breedlove 1961-7-4 654 Humboldt On U.S. Highway 299, 13.7 miles west of Willow Creek 731 Comment
  UC302181  Wyethia angustifolia Joseph P. Tracy 1926-6-6 7577 Humboldt in open forest on road w from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  CAS-BOT-BC326980  Wyethia longicaulis Doris K. Kildale 1926-6-9 2148 Humboldt Horse Mountain 1219 Comment
  UC604675  Wyethia longicaulis Joseph P. Tracy 1938-7-7 16041 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC326977  Wyethia longicaulis Volney Rattan 1881-6-1 s.n. Humboldt North of Mad River Comment
  CAS-BOT-BC326978  Wyethia longicaulis Volney Rattan 1883-6-1 s.n. Humboldt North east of Mad River Comment
  UC535716  Xanthium strumarium Eleanor Armstrong 1934-8-2 1135 Humboldt Richardson Grove 121 Comment
  HSC37690  Xanthium strumarium R. Sutherland 1976-8-13 31 .13876 Humboldt In mouth of Redwood Creek at South Fork of Eel River. 88 Comment
  HSC15736  Xerophyllum tenax D. E. Anderson 1965-6-1 3774 Humboldt On ridge along Friday Hill Rd., about 2 mi. from its junction with Titlow Hill Rd. 1159 Comment
  CAS-BOT-BC527072  Xerophyllum tenax B. H. Mace; Frank Graham 1922-10-1 38737 Humboldt Brannan Mt., Trinity Forest Comment
  HSC15777  Zigadenus fremontii J. Wendell Howe 1930-3-30 78 Humboldt Diamond Canyon, presumed Humboldt Co. but not stated Comment



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