Search Results — 2000 specimen records retrieved (1357 records with coordinates)
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Results for search: County=HUMBOLDT; Source=All;   

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

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC77964  Abies concolor L. R. Abrams 1918-6-15 7128 Humboldt Brannan Mt near Willow Creek 1341 Comment
  HSC54029  Abies concolor Griswold, Butler 1979-7-12 7209 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CDA19040  Abies grandis George Loughner 2000-10-6 PDR 023915 Humboldt North Coast Ranges; Ridge E of Blue Lake. 0 Comment
  HSC49356  Abies grandis Thomas W. Nelson, Jane P. Nelson 1979-9-10 5064 Humboldt Along old logging road S of Lundbar Hills. Bulk Collection # 187 49 Comment
  RSA33416  Abies grandis Doris K. Kildale 1941-7-25 s.n. Humboldt Arcata Comment
  HSC55173  Abies procera Gilbert Muth 1979-8-1 12174 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC27878  Abronia latifolia Clifton Raymond Chesbrough 1973-6-19 76 Humboldt 1/4 mi. W of the Samoa entrance to Samoa Bridge Comment
  HSC33747  Abronia latifolia A. Montalvo 1975-5-24 286 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  SD41446  Abronia latifolia Edith A. Purer 1932-7-27 4124 Humboldt Samoa Comment
  HSC62913  Abronia latifolia J. M. DiTomaso 1979-5-20 1062 Humboldt Little River State Beach 10 mi. N of Arcata Comment
  UC146158  Abronia umbellata subsp. breviflora J. P. Tracy 1906-9-29 2550 Humboldt Samoa, Ocean Beach, Sand Hills Comment
  UC205486  Acer circinatum Joseph P. Tracy 1920-8-1 5346 Humboldt Lawrence Creek Kneeland Prairie 457 Comment
  UC35021  Acer circinatum Chesnut and Drew 1888-5 Humboldt Arcata Comment
  HSC58344  Acer glabrum var. torreyi Overton, Butler 1979-8-2 12671 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC97642  Acer glabrum var. torreyi Cara Witte 2007-6-12 245 Humboldt Intersection of 4N70 and 4N32. Intersection to Grouse Mountain Lookout. 1628 Comment
  UCD117014  Acer macrophyllum David G. Forbes 1966-4-4 6438 Humboldt 0.5 mile south of Weott on Avenue of the Giants. 30 Comment
  HSC37924  Achillea millefolium Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  HSC4562  Achillea millefolium Lincoln Constance 1934-5-29 716 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  HSC58099  Achillea millefolium G. L. Clifton, Griswold 1979-8-1 12027 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC81936  Achillea millefolium Thomas W. Nelson, Jane P. Nelson 1979-7-3 4957 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC89470  Achillea millefolium P. A. Daly 1986-3-12 97 Humboldt Trinidad Head, along trail 61 Comment
  UC1125414  Achillea millefolium H. L. Person 1932-7-16 9 Humboldt highway n Trinidad; Rock Point Quad. 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
  CAS-BOT-BC400022  Achlys triphylla Mrs. H. E. Wilder 1933-5-20 s.n. Humboldt Carlotta Comment
  SEINET12094127  Achlys triphylla F. H. Utech 1988-1 88 -275 Humboldt 14 mi W of Bridgeville on CA 36, Van Duzen County Park along Van Duzen River 50 Comment
  CAS-BOT-BC210654  Achnatherum lemmonii Joseph P. Tracy 1933-6-13 12597 Humboldt Hoopa Mountain. Near summit on road from Hoopa westward to Bair's 1066 Comment
  UC552726  Achnatherum lemmonii Joseph P. Tracy 1935-6-23 13964 Humboldt French Camp Ridge 1066 Comment
  RSA167312  Achyrachaena mollis Joseph P. Tracy 1948-6-13 18054 Humboldt Grassy slopes near Harris Comment
  UCD103770  Acmispon americanus var. americanus Linda M. Barker 1976-6-1 1548 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SDSU4308  Acmispon parviflorus D. F. Howe 1962-5-22 3307 Humboldt 0.7 miles east of Orick on Bald Mt. road. 396 Comment
  HSC97999  Aconitum columbianum Cara Witte 2007-7-9 452 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1554 Comment
  HSC56001  Aconitum columbianum subsp. viviparum Overton, Butler 1979-7-31 11449 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC412601  Aconogonon alaskanum Volney Rattan 1883-6-1 s.n. Humboldt Summit bet. Pilot Cr. & Trinity Comment
  UCD98796  Aconogonon phytolaccifolium P. B. Kennedy 1925-8-29 s.n. Humboldt Eureka. Comment
  JEPS79802  Actaea rubra Joseph P. Tracy 1932-7-17 10690 Humboldt Devil's Hole Klamath Mts., Trinity Summit (head) 1828 Comment
  SEINET12094122  Actaea rubra F. H. Utech 1988-1 88 -268 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Van Duzen County Park, Pamplin Grove 50 Comment
  POM319488  Actaea rubra subsp. arguta Patricia Wilder 1968-8-22 4423 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  CAS-BOT-BC29864  Adenocaulon bicolor Carl B. Wolf 1927-8-21 766 Humboldt In Stephen's Grove Comment
  SD9506  Adiantum aleuticum May Canfield Unknown Humboldt Carlotta Comment
  SEINET181170 Image available Adiantum pedatum Bassett Maguire 1934-6-8 15048 Humboldt unspecified Comment
  HSC5642  Ageratina occidentalis J. P. Tracy 1922-7-15 6101 Humboldt Along Mad River, near Blue Lake Comment
  UC166820  Agoseris apargioides var. maritima J. P. Tracy 1901-8-7 1259 Humboldt sand hills at Samoa, opposite Eureka Ocean Beach, Eureka Comment
  HSC70407  Agoseris grandiflora M. A. Baker 1980-6-7 1877 Humboldt Near Ammon Creek 732 Comment
  UC582754  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1930-7-6 8842 Humboldt Kneeland Prairie Kneeland Prairie 762 Comment
  HSC98511  Agoseris grandiflora var. leptophylla Cara Witte 2008-8-6 1008 Humboldt Board Camp Mountain; 1 mile south of Forest Service Road 4N38 and National Forest 1 intersection. 1416 Comment
  UC1173669  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1939-8-5 16390 Humboldt (along Van Duzen River opposite Buck Mt.) Dinsmore's; Van Duzen River, Buck Mt. 762 Comment
  UC1222930  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1950-7-31 19225 Humboldt 1 mi s, along roadside Friday's Camp; Grouse Mountain 1524 Comment
  HSC32335  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5616 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UCR136660  Agrostis alba H. M. Pollard 1948-7-21 s.n. Humboldt Klamath River banks near Orleans 122 Comment
  HSC8778  Agrostis densiflora J. P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon 6 Comment
  CAS-BOT-BC127281  Agrostis exarata Joseph P. Tracy 1927-7-17 8285 Humboldt Northern Coast Ranges. Three Cabins. Chaparral Mountain. 457 Comment
  POM247142  Agrostis exarata H. E. Parks 1935-06 5607 Humboldt Spruce Cove, Trinidad. Comment
  UC186901  Agrostis exarata J. P. Tracy 1902-6-20 1754 Humboldt vicinity Eureka 0 Comment
  UC526891  Agrostis exarata Joseph P. Tracy 1932-6-14 10145 Humboldt mountainside w mouth of South Fork of Trinity River; North Coast Ranges 609 Comment
  UCD52411  Agrostis exarata Harley P. Chandler 1901-6-1 1512 Humboldt Klamath River. 426 Comment
  SEINET11673856  Agrostis exarata P. H. Chandler 1901-1 1525 Humboldt Klamath River, North Coast Ranges 427 Comment
  BLMAR432  Agrostis gigantea Jennifer Wheeler 2005-7-20 432 Humboldt Lost Coast Headland, growing in grazing allotment 91 Comment
  CAS-BOT-BC139497  Agrostis hallii Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  HSC37235  Agrostis hallii Lon Hall 1975-6-19 400 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC74861  Agrostis hallii Gail Newton 1981-8-5 2363 Humboldt Near Bug Creek, E Fork. 820 Comment
  SEINET10510269  Agrostis microphylla A. Arthur Heller 1923-7-8 Heller 13772 Humboldt Plentiful in a depression in a field in clay soil at Fortuna. Comment
  HSC102086  Agrostis oregonensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 990 Humboldt Patterson Meadows 1555 Comment
  HSC8806  Agrostis oregonensis R. I. Bonn 1965-10-1 Humboldt 2 mi. N of Bridgeville on Kneeland-Bridgeville Rd. 732 Comment
  RSA10024  Agrostis oregonensis Joseph P. Tracy 1925-7-5 7173 Humboldt Bald Mountain; near High Prairie 1067 Comment
  RSA152377  Agrostis oregonensis Joseph P. Tracy 1941-8-24 17039 Humboldt South Fork Mountain. Near McKay camp. 1677 Comment
  SD51396  Agrostis pallens Darley F. Howe 1961-8-1 Humboldt 6 miles north of Trinidad on #101. Comment
  SBBG21792  Ailanthus altissima D. Myrick 1964-7-26 978 Humboldt Hwy 299, ca. 15 mi E of Arcata 762 Comment
Read comments
Feb 4 2016
  HSC47784  Aira caryophyllea Michael A. Watkins 1978-6-10 10 Humboldt Arcata, E side of 7th St. overpass to Hwy. 101 Comment
  HSC73963  Aira caryophyllea Gail Newton 1980-6-7 127 Humboldt Near Brush Mountain 1128 Comment
  HSC97500  Aira caryophyllea Cara Witte 2007-5-29 123 Humboldt Along National Forest 1. Approximately 4 miles south of intersection National Forest 1 and 5N04. 1441 Comment
  HSC100396  Alisma plantago Carl C. Marshall Jun 1887 486 Humboldt In a swamp near Cox's Ranch, SE Humboldt. Comment
  HSC102207  Allium amplectens M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1122 Humboldt Andy's Camp 1564 Comment
  RSA249433  Allium campanulatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5599 Humboldt Mt Lassic and two smaller peaks to immediate E. 1768 Comment
  CAS-BOT-BC135842  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-10 5440 Humboldt Along branch road off Swayback Ridge Road ca. 1/2 mile east of junction - Six Rivers National Forest 1371 Comment
  HSC67192  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-6-10 5417 Humboldt Along rd. to Red Mtn. 0.5 mi. W of junction with Swayback Ridge Rd. 1372 Comment
  HSC67211  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-7-10 5440 Humboldt Along branch rd. off Swayback Ridge Rd., 0.5 mi. E of junction 1372 Comment
  JEPS81076  Allium hoffmanii Thomas W. Nelson and Jane P. Nelson 1980-6-27 5951 Humboldt saddle between two peak e Mount Lassic (non-numbered section e of Sec. 36); Six Rivers National Forest, Blocksburg Quad. 1767 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
  RSA46860  Alnus rhombifolia Doris K. Kildale 1926-8-8 2457 a Humboldt South Fork of Eel River between mouth of Bull Creek and Dyerville bridge. 91 Comment
  CAS-BOT-BC169531  Alnus rubra Doris K. Kildale 1926-8-12 2488 Humboldt Moonstone Beach between Arcata and Trinidad Comment
  RSA2929  Alnus rubra C. B. Wolf 1931-8-28 2366 Humboldt Redwood Highway 4.5 miles no. of Fortuna on road to Eureka. 15 Comment
  UC175283  Alnus rubra Joseph P. Tracy 1912-3-31 3567 Humboldt Blue Lake Northern Coast Ranges, Mad River 30 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
  CDA28200  Alopecurus geniculatus A. A. Beetle, G. L. Stebbins, J. P. Tracy 1942-6-2 3458 Humboldt Loleta Swamp, S of Eureka. 0 Comment
  RSA129279  Alopecurus pratensis H. L. Person 1932-5-11 19401 Humboldt Redwood Highway, Arcata o Eureka. 0 Comment
  JEPS79807  Alopecurus saccatus Joseph P. Tracy 1942-6-2 17096 Humboldt Alton 30 Comment
  JEPS94282  Ambrosia chamissonis Vernon Oswald and Lowell Ahart 1997-9-4 8844 Humboldt Big Lagoon County Park at the sw edge of Big Lagoon Big Lagoon; North Coast Region, Big Lagoon County Park, Big Lagoon 3 Comment
  UC14177  Amelanchier alnifolia var. semiintegrifolia W. C. Blasdale 1896-6-6 Humboldt Fitzgeralds Comment
  HSC55995  Amelanchier pallida Overton, Butler 1979-7-31 11432 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC143011  Amelanchier utahensis John Thomas Howell; Alice Eastwood 1937-6-23 4800 Humboldt Little Van Duzen River Comment
  UC1198749  Amelanchier utahensis Joseph P. Tracy 1921-4-30 6022 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  SEINET3917966  Ammophila arenaria Dziekanowski, Dunn; Bennett 1976-8-6 2504 Humboldt Collected in the vicinity of a state park on the beach opposite McKinleyville.; 0 Comment
  HSC37912  Anaphalis margaritacea Peter Sorensen 1976-7-14 Humboldt Woodley Island Comment
  SEINET10761471  Anaphalis margaritacea J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13013 Humboldt On U.S. 101, near Holmes, 1.76 km south of Stafford Road. Comment
  CAS-BOT-BC391777  Anemone deltoidea Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  UC1196194  Anemone deltoidea Joseph P. Tracy 1933-7-11 12711 Humboldt Grouse Mtn; North Coast Ranges; Grouse Mtn 1524 Comment
  HSC56060  Angelica arguta G. L. Clifton, Griswold 1979-7-31 11697 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC76205  Angelica arguta Overton, Butler 1979-8-2 12536 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  JEPS14103  Angelica hendersonii Joseph P. Tracy 1936-10-24 15205 Humboldt Table Bluff 91 Comment
  RSA21584  Angelica hendersonii C. B. Wolf 1937-9-9 9304 Humboldt 2 miles S of Cape Mendocino. 6 Comment
  UC642238  Angelica tomentosa Joseph P. Tracy 1938-8-14 16107 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  UC169302  Anisocarpus madioides Joseph P. Tracy 1909-7-31 3033 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC169316  Anisocarpus madioides Joseph P. Tracy 1908-6 2878 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  UC485304  Anisocarpus madioides J. P. Tracy 1903-5-24 1909 Humboldt Alder Point 304 Comment
  HSC58749  Antennaria argentea Overton, Butler 1979-7-24 9595 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  UC1222876  Antennaria suffrutescens Joseph P. Tracy 1947-7-9 17864 Humboldt Horse Mountain 1432 Comment
  JEPS13332  Anthemis arvensis Joseph P. Tracy 1937-10-3 15691 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  SEINET2031154 Image available Anthemis cotula J. P. Tracy 1909-7-4 3011 Humboldt Immediate vicinity of Eureka Comment
  HSC90322  Anthoxanthum occidentale C. Wilson, P. Kittelson, M. Hardig 1992-5-2 61 Humboldt 50 m up dirt road E of Redwood Science Lab. 61 Comment
  HSC90402  Anthoxanthum occidentale Michele Lewis, Lisa Sims, Roger Cook 1992-5-12 49 Humboldt Behind the Redwood Science Lab, down gated fire access road 50 m, 10 m to right of trail. Comment
  UCD85497  Anthoxanthum occidentale H. S. Yates 1936-6-22 5850 Humboldt 4 miles NE of Bald Mtn. Comment
  HSC8942  Anthoxanthum odoratum Gerald T. Rood 1962-5-6 11 Humboldt Kneeland Road ca. 1 mi. W of Barry Rd. Comment
  HSC8948  Anthoxanthum odoratum William J. Ferlatte 1963-5-6 34 Humboldt Arcata, near 11th and B Sts. Comment
Read comments
Jun 6 2012
  RSA10084  Anthoxanthum odoratum Joseph P. Tracy 1925-7-5 7164 Humboldt High Prairie, on Bald Mountain. 1067 Comment
  UCD56232  Anthoxanthum odoratum Linda M. Barker 1976-4-30 1402 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD56274  Anthoxanthum odoratum J. W. McClellan 1924-5-26 s.n. Humboldt from Bridgeville. Comment
  HSC78963  Anthriscus caucalis L. P. Janeway, Ken Berg 1984-4-11 722 Humboldt N Spit of Humboldt Bay, turnout along Samoa Rd., across from boat ramp just N of Coast Guard Station 3 Comment
  HSC100657  Antirrhinum breweri Carl C. Marshall Jun 1887 490 Humboldt Harris's Ranch. 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
  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
  HSC40992  Apocynum androsaemifolium Thomas W. Nelson, Jane P. Nelson 1977-9-3 3730 Humboldt N of pond above Alder Springs 1616 Comment
  UC562298  Apocynum cannabinum Joseph P. Tracy 1932-6-14 10148 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  HSC48762  Aquilegia formosa Brad Klipfel 1973-6-10 98 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC99008  Aquilegia formosa var. formosa Cara Witte 2008-7-16 907 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  HSC56075  Aquilegia formosa var. truncata G. L. Clifton, Griswold 1979-7-31 11751 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC90416  Arabis breweri var. breweri C. Wilson, P. Kittleson, M. Hardig 1992-3-17 36 Humboldt Titlow Hill Rd., 1.7 mi. S of intersection with Hwy. 299 1037 Comment
  HSC98836  Arabis subpinnatifida Cara Witte 2008-6-2 668 Humboldt 1/2 mile southeast of intersection National Forest 1 and 5N01. 1570 Comment
  UC774624  Aralia californica Carl B. Wolf 1937-9-8 9302 Humboldt Bull Creek-Petrolia Rd. 12 mi. w. of Redwood Hwy.; North Coast Range 457 Comment
  CAS-BOT-BC407747  Arceuthobium abietinum Doris K. Kildale 1926-9-5 2634 Humboldt Lasseck's Peaks, between Goat Camp and Signal Peak 1661 Comment
  UC585902  Arctostaphylos Joseph P. Tracy 1931-3-1 9283 Humboldt Miranda South Fork of Eel River 121 Comment
  UC902044  Arctostaphylos Joseph P. Tracy 1949-8-4 18406 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  HSC33153  Arctostaphylos canescens Thomas W. Nelson, Brad Klipfel, Jane Cole 1974-5-8 1248 Humboldt Horse Mtn. area, E of microwave tower 1220 Comment
  JEPS118167  Arctostaphylos canescens subsp. canescens Dean W. Taylor 2009-7-14 20676 Humboldt vicinity Huestis Prairie (watershed Redwood Creek) 975 Comment
  BLMAR245  Arctostaphylos columbiana Jennifer Anthony-Wheeler 1997-7-24 245 Humboldt Lacks Creek, growing along rdside & throughout regenerating 1219 Comment
  CAS-BOT-BC23731  Arctostaphylos columbiana B. A. Stein 1981-11-1 567 Humboldt US Hwy 101 2 miles north of Patrick Poing 60 Comment
  CAS-BOT-BC23747  Arctostaphylos columbiana P. C. Everett; E. K. Balls 1959-10-25 23965 Humboldt 8.8 mi. NE from Blue Lake, U.S. hwy. 299, Arcata to Willow Creek. 274 Comment
  CAS-BOT-BC23760  Arctostaphylos columbiana Alice Eastwood; John Thomas Howell 1934-4-11 1326 Humboldt Patrick's Point Comment
  CAS-BOT-BC23811  Arctostaphylos columbiana C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny, near Humboldt - Mendocino county line. Comment
  CAS-BOT-BC23818  Arctostaphylos columbiana Joseph P. Tracy 1940-7-14 16688 Humboldt Wilder Ridge (near Kings Peak) 762 Comment
  UC1198663  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13138 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  UC397307  Arctostaphylos columbiana Joseph P. Tracy 1923-2-18 6142 Humboldt Patrick's Point Northern Coast Ranges 30 Comment
  UC585916  Arctostaphylos columbiana Joseph P. Tracy 1935-2-9 13710 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC23738  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of Van Duzen River. Comment
  SEINET11977760  Arctostaphylos columbiana J. P. Tracy 1950-1 19252 Humboldt Grasshopper Peak, Bull Creek State Park Comment
  RSA15551  Arctostaphylos columbiana var. columbiana C. B. Wolf 1927-8-30 1241 Humboldt Paradise, 5 or 6 miles N of Ettersburg. Comment
  RSA293169  Arctostaphylos columbiana var. columbiana Thomas W. Nelson, James Nelson, A. Nelson 1976-3-11 2267 Humboldt Beside old highway 101 along north side of Table Bluff. Comment
  POM209627  Arctostaphylos columbiana var. columbiana H. E. Parks 1931-12 4950 Humboldt Hobson's Trinidad. 61 Comment
  RSA81544  Arctostaphylos columbiana var. tracyi E. K. Balls, Percy C. Everett, B. K. Balls 1953-10-11 18626 Humboldt 0.1 mi. N of Humbolt-Mendecino Co. line, Hwy 101. 168 Comment
  SEINET11984904  Arctostaphylos columbiana var. tracyi Unknown 1965-1 541 Humboldt on USAL Rd, 23 mi N of junction with CA 1 & 2.7 mi S of junction of Four Corners Comment
  RSA632788  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27792 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  RSA632793  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27796 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  RSA632804  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27796 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  UCD52072  Arctostaphylos manzanita Joseph P. Tracy 1940-7-14 16689 Humboldt Wilder Ridge (near Kings Peak). 762 Comment
  HSC101660  Arctostaphylos manzanita subsp. glaucescens J. P. Smith, J. O. Sawyer 2011-4-23 13121 Humboldt Along road from Redway to Shelter Cove 212 Comment
  CAS-BOT-BC24375  Arctostaphylos manzanita subsp. manzanita J. P. Smith; John O. Sawyer 1975-4-6 8051 Humboldt 3 mi. n. of Whitethorn, across from the Califonria Dept. of Forestry Fire Station. Comment
  UC1198680  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1930-6-15 8757 Humboldt Dobbyn Creek 152 Comment
  UC1225895  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1942-7-18 17285 Humboldt Garberville 152 Comment
  JEPS38954  Arctostaphylos nevadensis Joseph P. Tracy 1932-7-12 10474 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  HSC55118  Arctostaphylos patula Gilbert Muth 1979-8-1 11896 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  CAS-BOT-BC46793  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17504 Humboldt Eureka 45 Comment
  RSA166376  Arctostaphylos uva-ursi R. F. Thorne 1957-9-3 19024 Humboldt Patrick's Point State Park. Comment
  RSA70889  Arctostaphylos uva-ursi R. S. Woglum 1938-8-29 12639 Humboldt North Coast: Samoa; Samoa Peninsula separating Humboldt Bay from the Pacific Ocean. . Comment
  UCSB15774  Arctostaphylos uva-ursi 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  SEINET11987353  Arctostaphylos uva-ursi var. coactilis W. Knight, Knight, I. 1981-1 4047 Humboldt Tilden Botanic Garden, Berkeley, orig. from Samoa Comment
  HSC100936  Arenaria douglasii Miss Handy Jun 1886 338 Humboldt Dry hills, Maple Cr. Comment
  UCR45350  Arenaria macrophylla Barry Silver 1986-4-23 544 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  UCD56445  Aristida oligantha Joseph P. Tracy 1938-8-14 16110 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CDA18206  Armeria maritima subsp. californica G. D. Barbe, T. C. Fuller 1974-6-17 1832 Humboldt North Coast Ranges; Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  CAS-BOT-BC82103  Arnica cernua Thomas Nelson 1974-5-30 1345 Humboldt along the Hoopa-Redwood Valley Road Comment
  HSC46306  Arnica cernua J. P. Smith, J. O. Sawyer 1973-5-12 6702 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  UC1223000  Arnica discoidea Joseph P. Tracy 1950-8-8 19273 Humboldt near, (2 mi e of town, on trail to Groghan Hole) Box Camp; Trinity Summit 1524 Comment
  HSC58598  Arnica latifolia G. L. Clifton, Griswold 1979-7-25 10755 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC302175  Arnica latifolia Mrs. L. B. Kildale 1926-4-25 Humboldt Sugar Bowl Mt. Trinity River 457 Comment
Read comments
Mar 1 2007
  HSC32483  Arrhenatherum elatius D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5719 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC922020  Arrhenatherum elatius Joseph P. Tracy 1950-6-15 18781 Humboldt 5 mi n of Harris (near top of Mail Ridge); Mail Ridge 1066 Comment
  RSA424565B  Artemisia douglasiana Thomas S. Elias, Barbara A. Elias 1987-8-26 10628 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge Comment
  SD41467  Artemisia pycnocephala Edith A. Purer 1932-7-27 4123 Humboldt Samoa Comment
  SD42225  Artemisia pycnocephala Carl B. Wolf 1940-11-10 3868 Humboldt Coast south of Mendocino, 1.8 miles north of where road turns inland to Petrolia 24 Comment
  UC204825  Artemisia suksdorfii Joseph P. Tracy 1918-7-1 4973 Humboldt 3 mi s point of cape; Northern Coast Ranges, Cape Mendecino 3 Comment
  HSC98066  Aruncus dioicus var. acuminatus Cara Witte 2007-7-12 515 Humboldt Forest Service Road 5N10. 2 miles east of intersection with National Forest 1. 1339 Comment
  CAS-BOT-BC453345  Aruncus dioicus var. vulgaris Doris K. Kildale 1930-6-1 9747 Humboldt Klamath River at Weitchpec Comment
  CHSC97953  Asarum hartwegii D. E. Anderson 1965-5-1 3566 Humboldt Along Hw. 96, 1.9 mi. no. of Willow Creek. Comment
  HSC63224  Asclepias cordifolia M. A. Baker 1978-5-6 489 Humboldt 2 km. S of Weitchpec Comment
  UC1197605  Asclepias speciosa Joseph P. Tracy 1911-7-8 3472 Humboldt near mouth Willow Creek; Northern Coast Ranges, Valley of the Trinity River 152 Comment
  UC1222669  Asclepias speciosa Joseph P. Tracy 1950-7-6 19002 Humboldt 2 mi s Burr Valley (on the Albee Road) 1158 Comment
  CAS-BOT-BC65944  Aspidotis densa L. R. Abrams 1918-6-15 7123 Humboldt Brannan Mt near Willow Creek 1371 Comment
  HSC1049  Aspidotis densa D. E. Anderson 1965-5-1 3582 Humboldt Along road to Bluff Creek campground, about 3 mi. from its junction with Hwy. 96 Comment
  RSA273373  Aspidotis densa Thomas W. Nelson, Jane Nelson 1976-7-1 2906 Humboldt North of Bear Creek 1463 Comment
  SEINET200793 Image available Aspidotis densa J. P. Tracy 1942-6-23 17265 Humboldt Water Dog Lake; Trinity Summit 1830 Comment
  CDA30679  Aster chilensis M. K. Beyers, I. Shepardson 2009-9-13 252 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  RSA18141  Aster chilensis C. B. Wolf 1927-8-22 808 Humboldt 1 mile south of Orick. Comment
  CDA26596  Astragalus agnicidus R. Drewry 1988-7-15 Humboldt Near Miranda. 0 Comment
  CHSC96713  Astragalus agnicidus Gordon Leppig 2001-6-25 2107 Humboldt PALCO land. UTM Zone 10, 411418E, 4498706N. 700 Comment
  HSC94176  Astragalus agnicidus Melisa Brooks 2000-6-14 Humboldt Pacific Lumber Co. land 671 Comment
  CAS-BOT-BC193137  Astragalus rattanii var. rattanii Joseph P. Tracy 1932-6-19 10245 Humboldt Buck Mountain, lower foothills of its northwest slope 762 Comment
  UC33313  Astragalus rattanii var. rattanii W. C. Blasdale 1896-6-4 Humboldt Graham's Comment
  SEINET948796  Astragalus umbraticus Joseph P. Tracy 1914-1 4595 Humboldt Bal mountians, between high prairie and snow camp. 1219 Comment
  HSC98039  Asyneuma prenanthoides Cara Witte 2007-7-17 539 Humboldt Along 4N38. Road to Board Camp Mountain. 1388 Comment
  RSA246930  Athyrium filix-femina subsp. cyclosorum R. F. Thorne, Percy C. Everett 1965-8-9 35292 Humboldt Big Lagoon 3 Comment
  RSA413349  Athyrium filix-femina subsp. cyclosorum R. Whittaker, W. A. Niering 1963-6-14 491 Humboldt Humboldt Redwoods, Weott Comment
  RSA44514  Athyrium filix-femina subsp. cyclosorum Henry M. Pollard 1947-8-28 s.n. Humboldt Perch Creek Canyon, Mount Orleans Comment
  HSC54545  Athyrium filix-femina var. cyclosorum Overton, Butler 1979-7-23 9532 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC98869  Athyrium filix-femina var. cyclosorum Cara Witte 2008-8-5 995 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles E of intersection with National Forest 1. 1346 Comment
  HSC91598  Athyrium filix-femina var. cyclosorum E. Mackey 1986-10-2 Humboldt Patrick's Point State Park by trail to Agate Beach Comment
  JEPS341  Athyrium filix-femina var. cyclosorum Wm. K. D. Reynolds August, 1933 1 Humboldt Briceland Comment
  UC197922  Athyrium filix-femina var. cyclosorum Joseph P. Tracy 1912-7-25 3814 Humboldt along Black Creek Kneeland Prairie; Northern Coast Ranges 762 Comment
  BLMAR35  Avena barbata Brad Barr 1982-6-21 35 Humboldt King range, elk enclosure Comment
  SD39654  Baccharis glutinosa Edith A. Purer 1932-7-27 4139 Humboldt Samoa Comment
  UC1119655  Baccharis glutinosa H. L. Person 1932-7-18 Humboldt Eureka Comment
  HSC67009  Baccharis pilularis subsp. consanguinea J. P. Smith 1971-10-9 4992 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC79368  Baccharis pilularis subsp. consanguinea Kenneth Clark 1980-11-28 1052 Humboldt Above Point No Pass 488 Comment
  UCD129438  Baccharis pilularis subsp. consanguinea Linda M. Barker 1976-9-3 1691 Humboldt 3 miles west of Arcata. Comment
  CAS-BOT-BC99989  Balsamorhiza deltoidea Harold E. Parks; Joseph P. Tracy 1935-6-16 11282 Humboldt Buck Mt. Lower NW slopes 792 Comment
  CHSC284  Bellis perennis M. Underhill 1952-7-13 Humboldt 1 Comment
  POM41982  Bellis perennis Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  HSC53890  Bensoniella oregona Griswold, Butler 1979-7-11 6384 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  JEPS3739  Bensoniella oregona Rimo Bacigalupi and L. Constance with R. Moran, R. L. Rodriguez and Sherwin Carlquist 1951-6-14 3410 Humboldt on long high ridge between Mad River and Redwood Creek (Bald Mountain ridge) (edge of forest at High Prairie); btw Mad River and Redwood Creek (Bald Mountain ridge) 1066 Comment
  HSC35711  Berberis aquifolium Thomas W. Nelson 1975-10-12 2238 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC1198388  Berberis aquifolium Joseph P. Tracy 1924-4-27 6641 Humboldt along hwy near Ruby Creek Willow Creek 609 Comment
  HSC41337  Berberis nervosa Brad Klipfel 1974-9-7 563 Humboldt Horse Mtn., above E fork of Willow Creek Comment
  HSC74649  Berberis nervosa M. A. Baker 1980-5-17 1207 Humboldt Near Le Perron Peak 792 Comment
  HSC99384  Berberis nervosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 33 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CDA24403  Berberis pinnata E. C. Whitney 1967-4-1 Humboldt Bear River, Ferndale. 0 Comment
  BLMAR651  Berberis pinnata subsp. pinnata Jennifer Wheeler 2012-5-9 651 Humboldt Lacks Creek, Beaver Ridge Road 890 Comment
  POM118334  Blechnum spicant Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC370622  Blechnum spicant H. E. Parks 1925-6-20 3231 Humboldt Orick Comment
  HSC99625  Blechnum spicant H. S. Logsdon 1964-5-10 14 Humboldt 4 mi. N of Orick at Boye's Prairie Comment
  RSA182023  Boisduvalia glabella Joseph P. Tracy 1916-6-19 4726 Humboldt Northern coast ranges: Dobbyn Creek 183 Comment
  RSA182046  Boisduvalia stricta Joseph P. Tracy 1916-6-19 4728 Humboldt Northern coast ranges: Forks of Dobbyn Creek 183 Comment
  HSC31637  Borago officinalis Glenn McGourty 1974-6-1 85 Humboldt Comment
  JEPS49658  Boykinia major Joseph P. Tracy Jul 16 1930-Jul 19 1930 8935 Humboldt McKay Camp South Fork Mountain (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  RSA20790  Boykinia major Carl B. Wolf 1937-8-13 9255 Humboldt North Coast Range, 11 miles E of Hoopa Valley on new road towards Trinity Summit. 1524 Comment
  CAS-BOT-BC420268  Boykinia occidentalis E. A. McGregor 1921-8-17 s.n. Humboldt on old abandoned road grade s.e. of Orick Comment
  HSC25680  Boykinia occidentalis Tim Baroni 1971-8-1 150 Humboldt 8 mi. E of Petrolia on the Mattole River Comment
  CAS-BOT-BC420256  Boykinia occidentalis Henry M. Pollard 1948-7-23 s.n. Humboldt Perch Creek canyon, near Orleans Comment
  HSC37961  Brassica rapa Peter Sorensen 1976-6-12 Humboldt Woodley Island, Humboldt Bay Comment
  CAS-BOT-BC36703  Brassica rapa John H. Thomas 1966-3-19 11487 Humboldt Southern end of Big Lagoon just inland from the coast between Eureka and Crescent City. Comment
  CAS-BOT-BC106285  Brickellia californica Hubert O. Jenkins 1943-8-1 s.n. Humboldt In dry rocky bed of Eel River, Richardson Grove Comment
  UC535727  Brickellia californica Eleanor Armstrong 1934-8-20 1181 Humboldt Richardson Grove 121 Comment
  SEINET10468010  Briza maxima Chester T. Dziekanowski, David B. Dunn; Charlene A. Bennett 1976-8-6 Dziekanowski 2503 Humboldt Collected in the vicinity of a state park on the beach opposite McKinleyville. Vast colony of yellow Lupinus arboreus. 3 Comment
  HSC38835  Briza minor R. Sutherland 1976-8-13 12 .13876 Humboldt Redwood Creek, Whittemore Grove 87 Comment
  UC1103342  Briza minor Joseph P. Tracy 1919-5-31 5141 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  CAS-BOT-BC484218  Brodiaea elegans subsp. elegans Henry M. Pollard 1948-7-17 s.n. Humboldt Banks of Klamath River, Orleans Comment
  CAS-BOT-BC144347  Bromus L. R. Abrams 1916-7-11 6012 Humboldt Mouth of Grizzly Creek on Van Duzon River. Comment
  HSC9215  Bromus carinatus T. L. Ackerman 1964-5-15 45 Humboldt Dunes west from Fairhaven sign Comment
  SEINET943640  Bromus carinatus var. carinatus T. R. Van Devender, R. K. Van Devender 1990-1 90 -105 Humboldt Paticks Point State Park, near Trinidad Comment
  UC249867  Bromus carinatus var. carinatus Joseph P. Tracy 1923-6-18 6282 Humboldt Northern Coast Ranges, Bear River Ridge Bear River Ridge; Northern Coast Ranges, Bear River Ridge 304 Comment
  HSC48064  Bromus diandrus Thomas W. Nelson 1978-4-23 3884 Humboldt N of Samoa Comment
  HSC9284  Bromus diandrus R. V. Papike 1962-5-25 33 Humboldt Arcata 91 Comment
  SEINET181180 Image available Bromus diandrus Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-7 15066 Humboldt 10 miles south of Squaw Creek. Comment
  CAS-BOT-BC155427  Bromus hordeaceus Doris K. Kildale 1926-5-2 1902 Humboldt Willow Creek Flat. Trinity River Valley. 152 Comment
  JEPS72930  Bromus hordeaceus Lincoln Constance 1934-5-26 673 Humboldt Bull Creek Region, South Fork Eel River, s end of Dyerville Bridge South Fork Eel River; Bull Creek Region, , Dyerville Bridge 45 Comment
  HSC74126  Bromus madritensis subsp. madritensis R. York 1980-5-23 628 Humboldt Near Buck Mtn. 1524 Comment
  UC1103347  Bromus madritensis subsp. rubens Joseph P. Tracy 1932-4-3 9790 Humboldt near Englewood (North Coast Ranges); North Coast Ranges 91 Comment
  UC277174  Bromus sterilis Joseph P. Tracy 1921-5-30 5493 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC526730  Bromus tectorum Joseph P. Tracy 1925-5-30 7039 Humboldt Northern Coast Ranges, Larrabee Valley Larrabee Valley; Northern Coast Ranges, Larrabee Valley 701 Comment
  UC167232  Bromus vulgaris Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5363 Humboldt near Harris (North Coast Ranges); North Coast Ranges Comment
  UCR51752  Buddleja davidii H. M. Pollard 1947-8-9 s.n. Humboldt North Coast Range, Klamath River near Harley Place, Orleans region Comment
Read comments
Apr 27 2007
  HSC57627  Cacaliopsis nardosmia G. L. Clifton, Griswold 1979-7-25 10766 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  CAS-BOT-BC185239  Calamagrostis koelerioides Joseph P. Tracy 1935-7-24 14192 Humboldt Trinity Summit. Near Ranger Station. 1828 Comment
  UC526803  Calamagrostis koelerioides Joseph P. Tracy 1933-8-30 13008 Humboldt Horse Mountain Northern Coast Ranges 1371 Comment
  UC552720  Calamagrostis koelerioides Joseph P. Tracy 1935-7-30 14355 Humboldt Salmon Summit 1767 Comment
  UC100200  Calamagrostis nutkaensis Malcolm A. Nobs and S. Galen Smith 1949-8-3 1194 Humboldt Eureka; southern outskirts Comment
  HSC17627  Calandrinia ciliata Elrid H. Spinas 1948-5-22 32 Humboldt Horse Mtn. Comment
  HSC62669  Callitriche stagnalis Michelle Stevens 1979-5-18 115 Humboldt By Bayside Grange at 2297 Jacoby Rd., Bayside. 0 Comment
  UC183610  Callitriche trochlearis Joseph P. Tracy 1913-3-9 4025 Humboldt Alton; Northern Coast Region 30 Comment
  HSC72926  Calocedrus decurrens R. York 1980-5-23 619 Humboldt Near Buck Mtn. 1524 Comment
  HSC73163  Calocedrus decurrens Gail Newton 1980-6-17 207 Humboldt Near Onion Mtn. 1341 Comment
  HSC98927  Calocedrus decurrens C. Witte 2008-10-18 1053 Humboldt Forest Service Road 5N04. 1/2 mile south of intersection with National Forest 1. 1623 Comment
  CAS-BOT-BC488457  Calochortus amabilis L. R. Abrams 1916-7-11 6980 Humboldt Between Blacksberg + Bridgeville Comment
  UCD18587  Calochortus amabilis Roman Gankin 1956-3-17 107 Humboldt off US Hwy 101, south boundary of Jenson Grove, near creek. Comment
Read comments
Feb 17 2006
  OBI36660  Calochortus coeruleus David J. Keil 1983-7-2 17309 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mtn Summit Rd Comment
  CAS-BOT-BC488620  Calochortus elegans var. nanus Doris Kildale Gillespie 1931-6-7 10586 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC15345  Calochortus tolmiei Class 1937-4-29 Humboldt Miranda Comment
  HSC67180  Calochortus tolmiei Thomas W. Nelson, James Nelson 1980-6-10 5431 Humboldt Along E side of Red Mtn. 1372 Comment
  HSC99312  Calochortus tolmiei M. A. Baker 1980-6-7 1813 Humboldt Near Brush Mtn. 1128 Comment
  RSA113893  Calochortus tolmiei E. K. Balls, Lee W. Lenz 1955-5-15 20738 Humboldt 13.5 miles SW from Ferndale along Old Coast road to Capetown. 335 Comment
  UC175806  Calochortus tolmiei Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3621 Humboldt near Hydesville (between Alton and Burnells); Northern Coast Region 30 Comment
  HSC44357  Calochortus tolmiei Brad Klipfel 1974-5-27 399 Humboldt Horse Mtn., ridge top near forks in rd. Comment
  HSC74422  Caltha leptosepala Gail Newton 1980-8-10 2045 Humboldt Near Blake Mtn. 1707 Comment
  HSC100365  Calycadenia truncata J. McRae 2007-9-13 Humboldt Sims Mtn., Panther dozer line. 732 Comment
  UC1196473  Calypso bulbosa Mabel Griffin 1927-4-23 Humboldt Dows Prairie, at top of North Hill Dows Prairie; , North Hill 60 Comment
  HSC55149  Calyptridium monospermum G. L. Clifton, Terry Griswold 1979-8-1 12075 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  SEINET12343673  Calystegia purpurata J. P. Tracy 1950-6-8 18769 Humboldt Near Petrolia, 2 mi down river Comment
  HSC59205  Calystegia soldanella Terry Roth 1979-5-24 81 Humboldt Samoa Dunes near the U.S. Coast Guard Station 5 Comment
  HSC6360  Calystegia soldanella D. E. Anderson 1961-9-2 1774 Humboldt 3 mi. S of Cape Mendocino. 3 Comment
  POM232320  Calystegia soldanella I. L. Wiggins 1930-7-7 4669 Humboldt Sand dunes near Samoa. Comment
  CHSC20349  Calystegia soldanella D. E. Anderson; N. Dennis 1965-6-8 1036 Humboldt Samoa Peninsula along the west side of Humboldt Bay. Sections 3, 4, 9, 10, 15, 16, 17, 20, 21, 28, 29, 31, 32. Comment
  UC13767  Camassia quamash subsp. quamash W. C. Blasdale 1896-6-4 Humboldt Eureka Comment
  NY679562  Camissonia cheiranthifolia subsp. cheiranthifolia H. H. Smith 1911-6-17 3853 Humboldt Vances Samoa. Comment
  HSC36594  Camissonia strigulosa K. Irwin 1976-4-17 Humboldt 1/2 mi. S of Lamphere Nature Conservancy next to Mad River Slough Comment
  CAS-BOT-BC160239  Camissoniopsis cheiranthifolia subsp. cheiranthifolia C. C. Harris; S. K. Harris; Clarence Crane, Jr. 1939-8-23 s.n. Humboldt On beach-sand at Samoa Comment
  CHSC10102  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. W. Johnson 1961-8-17 1044 Humboldt Arcata. Sand dune fields, Lanphere Farm. Comment
  SEINET10462973  Campanula prenanthoides Overton 1979-7-24 OVERTON 9693 Humboldt Near Friday Camp, on the Willow Creek quad., close to the town of Willow Creek 1250 Comment
  SEINET10463332  Campanula prenanthoides Alma L. Moldenke, Harold N. Moldenke 1975-8-21 Moldenke 20338 Humboldt RIO DELL, IN DEEP FOREST Comment
  SEINET10463745  Campanula scouleri Newton 1981-7-24 Newton 2300 Humboldt Iaqua Buttes quadrangle; near Chaparral Mountain, forest openings. 1433 Comment
  RSA12439  Campanula scouleri C. B. Wolf 1934-7-2 5854 Humboldt 2 miles from Bald Mt. on road to Korbel. Comment
  UC1199213  Capsella bursa-pastoris Joseph P. Tracy 1932-5-1 9885 Humboldt vicinity of Garberville; Northern Coast Ranges 121 Comment
  HSC34634  Cardamine californica R. M. Sullivan 1975-4-8 4 Humboldt 1 mi. S of Patrick's Point State Park on Hwy. 101, along foot path leading to beach 24 Comment
  JEPS53369  Cardamine californica W. L. Jepson 1934-5-7 16693 Humboldt Bull Creek Comment
  UC162639  Cardamine californica Harley P. Chandler May 1901 1091 Humboldt Idlewild near Dyerville (Humboldt Bay); North Coast Ranges, , Idlewild 152 Comment
  RSA0034559  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  HSC26791  Cardamine oligosperma Thomas W. Nelson 1971-4-27 426 Humboldt Along Jolly Giant Creek, HSU campus Comment
  UCR45400  Cardamine oligosperma Barry Silver 1986-4-23 539 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  UC668056  Cardaria draba Joseph P. Tracy 1938-6-12 15895 Humboldt opposite mouth of Van Duzen River (Eel River, Alton to Fortuna); Eel River 15 Comment
  CDA18240  Cardionema ramosissimum G. D. Barbe, T. C. Fuller 1974-6-19 1878 Humboldt North Coast Ranges; Mad River mouth, at end of Iversen Lane, Tyee City. 7 Comment
  CDA18246  Carduus tenuiflorus G. D. Barbe, T. C. Fuller 1974-6-18 1884 Humboldt North Coast Ranges; Fortuna bottoms, Grizzly Bluff; Waddington Rd. 1/4 mi N of Pleasant Point Rd. (Ferndale Bottoms) 2 mi N of Grizzly Bluff Rd. 0 Comment
  JEPS79829  Carduus tenuiflorus Joseph P. Tracy 1936-6-28 15008 Humboldt Hungry Hollow Bald Mt. 762 Comment
  UC1222954  Carduus tenuiflorus Joseph P. Tracy 1942-6-28 17266 Humboldt toward Hungry Hollow Angel's Ranch; Bald Mountain, Hungry Hollow Comment
  JEPS75414  Carex W. L. Jepson 1932-7-26 16411 Humboldt s bank, Bull Creek Bull Creek 106 Comment
  RSA286355  Carex aquatilis var. dives Robert F. Thorne 1974-7-29 45076 Humboldt Samoa Dunes: Between Humboldt Bay and Pacific Ocean. Comment
  RSA22378  Carex arcta Joseph P. Tracy 1937-8-12 15645 Humboldt Snow Camp Comment
  SEINET7484301 Image available Carex barbarae Peter F. Zika 2009-1 24503 Humboldt E side of Route 96, near town of Hoopa, W side of Trinity River, Outer North Coast Range (NCoRO) 90 Comment
  CHSC93263  Carex bolanderi Thomas Nelson; Jane Nelson 1977-7-1 3552 Humboldt The Lassics. Along Blanket Creek. 1493 Comment
  HSC75763  Carex bolanderi Denis Kearns 1981-7-23 405 Humboldt Near Whiteys Peak. 1524 Comment
  SEINET7552597 Image available Carex bolanderi L. P. Janeway 2003-7-30 7947 Humboldt High North Coast Ranges. Small spring and seep 100 m southwest of Clear Lake, 3.1 km southeast of Titlow Hill. 1494 Comment
  HSC63135  Carex bolanderi M. A. Baker 1979-6-29 967 Humboldt Comment
  SEINET10752409  Carex brainerdii Joseph P. Tracy 1935-7-30 Tracy 14350 Humboldt On ridge 2 miles SW of top Shasta Fir Zone. Comment
  UC562259  Carex densa Joseph P. Tracy 1928-6-17 8453 Humboldt Trinity River Valley, at Willow Creek Northern Coast Ranges 152 Comment
  UC195347  Carex deweyana subsp. leptopoda Joseph P. Tracy 1916-6-25 4746 Humboldt Redwood Creek, at point E from Trinidad 152 Comment
  JEPS109270  Carex diandra D. W. Taylor 2004-6-23 19127 Humboldt Pond on the divide between Frost Creek and Martin Creek, about 1 air mile e of the Alderpoint road. Comment
  SEINET4110861  Carex diandra D. W. Taylor 2004-1 19127 Humboldt Pond in the divide between Frost Creek and Martin Creek, about 1 air mile east of the Alderpoint Road. 518 Comment
  RSA246876  Carex echinata subsp. phyllomanica Robert F. Thorne, Percy C. Everett 1965-8-7 35188 Humboldt Big Lagoon. 2 Comment
  UCR52379  Carex exsiccata L. P. Janeway 1982-6-12 4 Humboldt Dry Lagoon 3 Comment
  CHSC98332  Carex feta Thomas W. Nelson; Jane P. Nelson 1982-7-11 7115 Humboldt North Coast Ranges. Along road from Hindley's cabin on McKeown's ranch to Anderson's ford at Mad River. T02N R05E S28 and 29. Comment
  SEINET7558590 Image available Carex feta Alice Eastwood, John Thomas Howell 1937-6-22 4743 Humboldt Near Blocksburg. Comment
  HSC102202  Carex fracta M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1117 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UC585645  Carex fracta Joseph P. Tracy 1937-7-25 15542 Humboldt head of Little Hors-Linto Creek Trinity Summit 1371 Comment
  CAS-BOT-BC20462  Carex harfordii Joseph Prince Tracy 1936-6-5 14858 Humboldt Fickle Hill. 6 miles SE of Arcata. 579 Comment
  SEINET7561247 Image available Carex harfordii David Castaner 1989-6-19 10253 Humboldt Gold Bluff Beach at entrance. Comment
  HSC70469  Carex hendersonii J. P. Tracy 1905-6-25 2202 Humboldt Eureka 0 Comment
  UC50824  Carex hendersonii J. P. Tracy 1900-5-28 811 Humboldt immediate vicinity Eureka 0 Comment
  CHSC90283  Carex hoodii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8534 Humboldt North Coast Ranges. Along Forest Road 13N01 18 miles from junction with State Route 96. 1066 Comment
  CAS-BOT-BC35565  Carex jonesii Joseph Prince Tracy 1932-7-15 10572 Humboldt Trinity Summit, at Corral Prairie 1584 Comment
  CAS-BOT-BC7790  Carex laeviculmis Joseph Prince Tracy 1930-7-16 8985 Humboldt South Fork Mountain. At McKay Camp. 1676 Comment
  CHSC90274  Carex lenticularis var. impressa Thomas W. Nelson; Jane P. Nelson 1987-6-11 8598 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  CHSC93148  Carex lenticularis var. impressa Thomas W. Nelson; Jane P. Nelson 1987-6-11 8584 Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  JEPS79856  Carex lenticularis var. impressa Joseph P. Tracy 1935-7-23 14148 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  UC562436  Carex lenticularis var. impressa Joseph P. Tracy 1932-7-14 10554 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC44035  Carex leptopoda Thomas W. Nelson, Jane P. Nelson 1977-7-1 3580 Humboldt Along road, N from Alder Springs 1463 Comment
  SEINET10710158  Carex leptopoda David Castaner 1984-5-28 Castaner 8066 Humboldt Patrick State Park. Redwood Forest area. Comment
  UC194811  Carex lyngbyei Joseph P. Tracy 1915-6-6 4646 Humboldt near mouth Elk River (region about Humboldt Bay); Northern Coast Region 0 Comment
  CHSC85570  Carex mendocinensis L. P. Janeway 2003-7-30 7944 Humboldt High North Coast Ranges. White Rock Spring, just above Clear Lake, on southwest side below Titlow Hill Road, 2.9 km southeast of Titlow Hill. 1512 Comment
  UC249752  Carex mendocinensis Joseph P. Tracy 1924-6-15 6697 Humboldt Northern Coast Ranges. Near Ruby Creek, on the Willow Creek highway. Comment
  CAS-BOT-BC539862  Carex mendocinensis Alice Eastwood; John Thomas Howell 1937-6-24 4866 Humboldt 5 mi E of Berry Summit Comment
  HSC102153  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1061 Humboldt Patterson Meadows 1555 Comment
  SEINET4292167 Image available Carex microptera Unknown 2003-1 7920 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5km northeast of the top of Grouse Mountain. Comment
  HSC82414  Carex microptera Thomas W. Nelson 1979-7-11 5033 Humboldt Along trail from Grogan's Hole to summit of N Trinity Mtn. Comment
  CAS-BOT-BC32132  Carex multicaulis Joseph Prince Tracy 1942-6-2 17105 Humboldt Valley of South Yager Creek. 762 Comment
  SEINET201051  Carex multicaulis J. P. Tracy 1927-3-27 7862 Humboldt Northern Coast Ranges Trinity River Valley near the South Fork 183 Comment
  UC709391  Carex multicaulis Joseph P. Tracy 1941-4-11 16857 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1103621  Carex nudata Joseph P. Tracy 1933-5-18 12194 Humboldt 6 mi W of Blue Lake (Mad River) 15 Comment
  CHSC10107  Carex obnupta J. W. Johnson 1961-8-17 1055 Humboldt Hollow 10, W.M. Lanphere Farm, Samoa Peninsula. Comment
  JEPS80018  Carex obnupta Joseph P. Tracy 1912-7-31 3898 Humboldt on nw slope of Buck Mountain Northern Coast Ranges, Burr Valley, Buck Mountain 1066 Comment
  UCD140701  Carex obnupta Gordon Leppig 1998-6-26 858 Humboldt McKinleyville, Hammond Trail, 100 m south of Knox Cove. 18 Comment
  CAS-BOT-BC119267  Carex ovalis Joseph Prince Tracy 1936-5-29 14826 Humboldt Gans Prairie on ridge E or Orick. 548 Comment
  JEPS79851  Carex pachycarpa Joseph P. Tracy 1932-7-11 10411 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC119225  Carex pachystachya Joseph Prince Tracy 1935-6-23 13984 Humboldt French Camp Ridge. 1066 Comment
  CAS-BOT-BC119237  Carex pachystachya Joseph Prince Tracy 1930-7-16 8984 Humboldt South Fork Mountain; in wet meadow at McKay Camp. 1676 Comment
  CAS-BOT-BC119243  Carex pachystachya Joseph Prince Tracy 1939-7-9 16342 Humboldt Snow Camp 1402 Comment
  UC562643  Carex pachystachya Joseph P. Tracy 1932-7-14 10548 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC103625  Carex rossii Thomas W. Nelson, Jane Nelson 1987-6-11 8536 Humboldt Along Forest Service Rd. 13N01, 18 mi. from junction with State Route 96. 1067 Comment
  JEPS79862  Carex stipata var. stipata Joseph P. Tracy 1931-5-17 9422 Humboldt opposite mouth Willow Creek (Lack Pond); Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1103577  Carex subfusca Joseph P. Tracy 1936-6-10 14916 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1103116  Carex tumulicola Joseph P. Tracy 1924-9-14 6876 1/2 Humboldt Butter Valley Northern Caost Ranges 152 Comment
  JEPS109269  Carex unilateralis D. W. Taylor 2004-6-24 19135 Humboldt Clear Lake, Titlow Hill Road Comment
  JEPS79867  Carex unilateralis Joseph P. Tracy 1933-6-9 12539 Humboldt Fortuna North Coast Ranges, Fortuna 18 Comment
  SEINET10751219  Carex unilateralis Joseph P. Tracy 1930-6-15 Tracy 8756 Humboldt Dobbyn Creek, bordering a pond. 152 Comment
  UC562327  Carex utriculata Joseph P. Tracy 1932-7-14 10563 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC7088  Carex viridula H. E. Parks Sep 1934 5157 Humboldt Dry Lagoon Comment
  HSC7090  Carex viridula B. D. Rogers 1965-10-2 1017 Humboldt Big Lagoon 0 Comment
  CHSC97051  Carex viridula subsp. viridula Gordon Leppig 1997-8-3 639 Humboldt Big Lagoon County Park. Big Lagoon Bog. Common on northern edge. NAD27 UTM Zone 10, 405321E 4557202N. 3 Comment
  BLMAR271  Castilleja affinis subsp. affinis Jennifer Anthony-Wheeler 1995-6-30 271 Humboldt Lacks Creek 1219 Comment
  JEPS83  Castilleja affinis subsp. affinis Lincoln Constance 1934-3-29 715 b Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UC1196854  Castilleja affinis subsp. litoralis Joseph P. Tracy 1920-7-4 5342 Humboldt mouth of Little River; Northern Coast Ranges 15 Comment
  UC1374929  Castilleja affinis subsp. litoralis Noel H. Holmgren and Liew Fah Seong 1969-6-24 3611 Humboldt 5.6 mi w Ferndale Comment
  UC201381  Castilleja affinis subsp. litoralis Joseph P. Tracy 1918-7-21 5081 Humboldt Humboldt Hill; Northern Coast Ranges, Humboldt Bay Region 152 Comment
  UC1173698  Castilleja attenuata Joseph P. Tracy 1939-4-29 16255 Humboldt Orleans 121 Comment
  HSC72482  Castilleja attenuata J. P. Smith, J. O. Sawyer 1973-5-12 6682 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  JEPS76826  Castilleja exserta subsp. latifolia L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-5-27 4805 Humboldt beach of Manila Manila; Samoa Peninsula, beach at Manila Comment
  HSC56041  Castilleja miniata G. L. Clifton, Griswold 1979-7-31 11608 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC56134  Castilleja miniata G. L. Clifton, Griswold 1979-8-1 11952 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC56208  Castilleja miniata G. L. Clifton, Griswold 1979-8-2 12210 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC41275  Castilleja pruinosa Brad Klipfel 1974-6-25 427 Humboldt Horse Mtn. Comment
  HSC20868  Castilleja rubicundula subsp. lithospermoides G. N. Bos 1965-5-2 244 Humboldt 8 mi. E of Korbel on Bald Mtn. Rd. 793 Comment
  RSA517384  Castilleja wightii R. C. Bacigalupi, L. R. Heckard 1964-7-27 8962 Humboldt Shaded bend of road just (1/8 mile) above and east of Shelter Cove. On partly shaded N-facing road bank. Comment
  UC1502106  Ceanothus R. Sutherland 1975-5-13 2 G.13 75 Humboldt Pt. Delgada Quad. 509 Comment
  HSC41300  Ceanothus arcuatus Brad Klipfel 1974-7-27 499 Humboldt Horse Mtn. Comment
  UCR141621  Ceanothus arcuatus J. M. Tucker 1948-9-3 1852 Humboldt Six Rivers National Forest (formerly part of Trinity National Forest) on Horse Mountain at junction of road to Grouse Mt. and road to Horse Mt. Mine 1463 Comment
  CAS-BOT-BC48529  Ceanothus cordulatus Doris Kildale Gillespie 1931-6-7 10618 Humboldt South Fork Mt. Blake Lookout 1726 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
  UC176960  Ceanothus cordulatus Joseph P. Tracy 1912-7-31 3936 Humboldt near summit of Buck Mt.; Northern Coast Ranges Comment
  HSC18281  Ceanothus foliosus R. H. Neuns 1950-10-17 141 Humboldt Bear Creek Rd. 6 mi N of Shelter Cove 610 Comment
  RSA134579  Ceanothus incanus Percy C. Everett, E. K. Balls 1959-10-26 23977 Humboldt 6 mi SE from Honeydew on Old Coast Road to Ettersberg. 518 Comment
  UC1070753  Ceanothus incanus A. E. Wieslander 1931-5-22 218 Humboldt Wilder Ridge Comment
  CAS-BOT-BC63676  Ceanothus integerrimus L. B. Kildale 1927-7-17 3751 Humboldt Bug Creek. 792 Comment
  HSC73241  Ceanothus integerrimus M. A. Baker 1980-5-18 1338 Humboldt Near Black Mtn. 792 Comment
  UC1070740  Ceanothus integerrimus A. E. Wieslander 1931-5-19 202 Humboldt Near Orleans Hoopa quad., Klammath Forest Comment
  UC33626  Ceanothus integerrimus Chesnut and Drew 1888-7-25 Humboldt Comment
  SBBG116557  Ceanothus oliganthus var. sorediatus D. H. Wilken 2003-7-22 16174 Humboldt near Windy Nip Gap, Mattole Rd, 1.5 km SW of Cathy's Pk 670 Comment
  CAS-BOT-BC51206  Ceanothus parryi W. R. Dudley 1899-6-20 s.n. Humboldt South Fork of Eel River Comment
  JEPS42120  Ceanothus parryi E. Fritz Apr. 1934 Humboldt Philipsville Comment
  POM283003  Ceanothus parryi Lyman Benson 1928-7-12 394 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; Watershed: S Fork Eel River. 76 Comment
  SDSU10303  Ceanothus parryi D. F. Howe 1962-5-21 3294 Humboldt 2.3 miles N of Garberville on #101. 152 Comment
  HSC41241  Ceanothus pumilus Brad Klipfel 1974-5-27 380 Humboldt Horse Mtn. Comment
  HSC76579  Ceanothus thyrsiflorus John Demarinis 1981-7-21 873 Humboldt Near Table Bluff 38 Comment
  CAS-BOT-BC52870  Ceanothus velutinus S. K. Harris 1942-6-12 1257 Humboldt Fickle Hill Road, 5 miles north and 2 miles east of Boynton Prairie 630 Comment
  JEPS42318  Ceanothus velutinus W. L. Jepson 1902-6-28 1949 Humboldt near Redwood Creek (High ridge, Acorn P.O. to Green Point Ranch) 1066 Comment
  UC1193275  Ceanothus velutinus R. H. Neuns 1950-7-13 128 Humboldt 3 miles south of Alder Point 548 Comment
  HSC56255  Ceanothus velutinus var. velutinus Walter Overton 1979-8-1 12389 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  CDA7302  Centaurea X pouzinii T. C. Fuller 1960-8-25 4975 Humboldt Pacific Lumber Company, Perrott Creek, across Eel River from Dyerville. 0 Comment
  SEINET200849  Centaurea cyanus Joseph P. Tracy 1918-7-1 4963 Humboldt Along Eel River from South Fork to Scotia; Holmes Flat 61 Comment
  CDA39219  Centaurea maculosa Weylan Shaw 2013-8-2 PDR# 120 P06003643 Humboldt Vicinity of Blue Lake, near the Mad River. Comment
  CDA7305  Centaurea nigra E. C. Whitney 1968-9-6 Humboldt Holmes Flat. Rutledge property. 0 Comment
  UC582526  Centaurea solstitialis Joseph P. Tracy 1933-8-27 13002 Humboldt 2 to 5 mi e of South Fork (along Eel River); Eel River 45 Comment
  JEPS11948  Centaurium muehlenbergii Rimo Bacigalupi with C. L. Custer and G. T. Robbins 1954-8-10 4755 Humboldt 1 mi s Garberville (along U.S. Highway 101) 213 Comment
  RSA144572  Centaurium muehlenbergii Peter H. Raven, Richard Snow 1958-7-20 13629 Humboldt Along Friday Ridge Road to Grouse Mountain, 1.5 miles west of junction with United States Highway 299. Comment
  SBBG1996  Cerastium arvense H. and M. Dearing 1933-5-17 239 Humboldt N of Arcata Comment
  UC668109  Cerastium fontanum subsp. vulgare Joseph P. Tracy 1933-5-28 12412 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC1198320  Cerastium glomeratum Joseph P. Tracy 1911-7-5 3308 Humboldt near mouth Willow Creek; Northern Coast Ranges, Willow Creek (tributary of Trinity R. 182 Comment
  UCD98024  Cerastium glomeratum Linda M. Barker 1976-4-13 1381 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC4106  Cerastium glomeratum R. D. Modafferi 1965-3-19 57 Humboldt .5 mi. S of Trinidad on Hwy. 101 305 Comment
  UC33525  Cercis occidentalis Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  UC199010 Image available Chamaesyce serpyllifolia Chesnut and Drew 1888-7-23 Humboldt Hy-am-pum Comment
  UC198574  Chamaesyce serpyllifolia Joseph P. Tracy 1916-9-5 4769 Humboldt 4 mi above Eel River (South Fork); Northern Coast Ranges 60 Comment
  HSC40253  Chamerion angustifolium subsp. circumvagum Linda M. Barker 1976-8-24 1682 Humboldt 3 mi. W of Arcata Comment
  CAS-BOT-BC68267  Cheilanthes gracillima Lincoln Constance; Reed C. Rollins 1942-5-12 2881 Humboldt Klamath-Siskiyou Region - Mouth of Bluff Creek, 6 miles northeast of Weitchpec. 152 Comment
  HSC74745  Cheilanthes gracillima Gail Newton 1981-8-7 2426 Humboldt Near Bug Creek Butte 1244 Comment
  UC195427  Chenopodium pumilio Joseph P. Tracy 1915-9-12 4675 Humboldt on river nearly opposite Laribee Creek; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  UCR45440  Chimaphila menziesii Barry Silver 1986-5-3 568 Humboldt North Coast Ranges, Forest Road 7N02 to Waterman Ridge, 7 mi from Willow Creek 976 Comment
  HSC98134  Chimaphila menziesii Cara Witte 2007-6-26 358 Humboldt Horse Mountain Botanical Area. 1341 Comment
  HSC99619  Chimaphila umbellata Jimerson, J. Pageau 1979-6-12 537 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  CAS-BOT-BC452226  Chimaphila umbellata Doris K. Kildale 1925-8-16 1163 Humboldt Trinity Summit Trail between forks of Tish-tang-i-tank Creek & Elk Horn Prairie 1524 Comment
  RSA43899  Chimaphila umbellata subsp. occidentalis H. M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1372 Comment
  JEPS50839  Chlorogalum pomeridianum var. pomeridianum Wayne Roderick 1966-6-18 Humboldt ca 3 road mi n Bridgeville 762 Comment
  UC1197665  Chlorogalum pomeridianum var. pomeridianum Joseph P. Tracy 1923-9-16 6559 Humboldt on the Trinity Hwy Northern Coast Ranges, Horse Mt. Pass 883 Comment
  UCR51763  Chrysanthemum parthenium H. M. Pollard 1948-8-12 s.n. Humboldt Near mouth of Pearch Creek, near Orleans 366 Comment
  RSA182008  Chrysolepis chrysophylla Joseph P. Tracy 1937-7-29 15583 Humboldt South Fork Mountain; along summit near Blake Lookout. 1707 Comment
  HSC98791  Chrysolepis chrysophylla var. minor Cara Witte 2007-9-3 639 Humboldt Horse Mountain Botanical Area. Road 6N38. 1 mile east of Horse Mountain Mine. 1259 Comment
  UCD110101  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1936-8-7 15117 Humboldt Trinity Summit. 2 miles southeast of Devil's Hole. 1584 Comment
  HSC26641  Chrysosplenium glechomifolium Thomas W. Nelson 1971-5-19 443 Humboldt HSC Campus beside Jolly Giant Creek Comment
  JEPS156  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt near Arcata (s of Salmon Creek, Mad River); Mad River Comment
  UC154050  Cicuta douglasii Joseph P. Tracy 1907-7-20 2597 Humboldt Region about Humboldt Bay, Northern Coast Region Humboldt Bay; Northern Coast Region, Humboldt Bay 0 Comment
  HSC16248  Circaea alpina subsp. pacifica B. D. Rogers, William J. Ferlatte 1966-6-15 2095 Humboldt E of Bridgeville on Hwy. 36 671 Comment
  UC1119170  Cirsium arvense H. L. Person 1932-7-21 Humboldt Blue Lake Eureka Quad. Comment
  CAS-BOT-BC284441  Cirsium brevistylum L. R. Abrams 1927-9-1 12062 Humboldt Big Lagoon Comment
  CAS-BOT-BC279977  Cirsium douglasii var. douglasii David D. Keck 1948-7-2 6002 Humboldt E. side Rocky Ridge, E. of Berry's summit, 8.6 mi. W. of Willow Ck., 1/4 mi. W. of boundary of Six Rivers Nat. Forest 76 Comment
  JEPS59231  Cirsium occidentale var. candidissimum W. L. Jepson 1902-8-5 2148 Humboldt Eltersburg to Briceland Comment
  CDA19782  Cirsium occidentale var. candidissimum J. Dolf 2001-9-6 PDR 069832 Humboldt Northern California; Vicinity of Honeydew. 0 Comment
  RSA43690  Cirsium occidentale var. candidissimum H. M. Pollard 1947-8-30 s.n. Humboldt Near Wilson Creek, on Klamath River, (near Orleans) Comment
  RSA671131  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt Nr. Berry Summit on Titlow Hill Road, 3.9 miles south of Hwy. 299 Comment
  UC91789  Cirsium remotifolium var. odontolepis W. W. Price 1890-7-3 Humboldt Comment
  HSC75274  Cirsium vulgare J. O. Sawyer, D. A. Thornburgh 1980-9-9 4081 Humboldt Mill Creek Lake and surrounding meadows Comment
  UC144097  Clarkia amoena Joseph P. Tracy 1907-7-4 2584 Humboldt just n of mouth Little River; Northern Coast Ranges 320 Comment
  UC902167  Clarkia amoena Joseph P. Tracy 1948-8-22 18110 Humboldt Table Bluff Ridge 91 Comment
  CAS-BOT-BC160969  Clarkia amoena subsp. amoena P. A. Munz 1936-8-10 14339 Humboldt Little Van Duzen River, 15 mi. east of Bridgeville Comment
  JEPS43698  Clarkia amoena subsp. amoena Milo S. Baker 1923-8-3 172 Humboldt near Trinidad; North Coast Comment
  RSA125035  Clarkia amoena subsp. amoena Peter H. Raven, R. Snow 1958-7-21 13656 Humboldt 7.2 miles NW of Capetown on road to Ferndale. Comment
  RSA21188  Clarkia amoena subsp. huntiana Carl B. Wolf 1947-8-11 9147 Humboldt North Coast Range, Laribee Valley, 8.5 miles west of Dinsmores 457 Comment
  CAS-BOT-BC164180  Clarkia concinna Harley P. Chandler 1901-6-1 1325 Humboldt Hupa Indian Reservation 152 Comment
  RSA244979  Clarkia concinna subsp. concinna B. D. Rogers, W. J. Ferlatte 1966-6-15 2105 Humboldt Larabee Valley 762 Comment
  HSC38460  Clarkia davyi A. Montalvo 1975-5-24 270 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  UC144076  Clarkia davyi Joseph P. Tracy 1907-7-20 2592 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  UC58846  Clarkia gracilis subsp. gracilis Harley P. Chandler June, 1901 1327 Humboldt Hupa Indian Reservation North Coast Ranges 152 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
  UC1196976  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1936-6-9 14898 Humboldt 4 mi nw Petrolia (Domingo Hill) 213 Comment
  UC160994  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1911-7-5 3307 Humboldt near mouth Willow Creek (tributary of Trinity River); Northern Coast Ranges 182 Comment
  POM72745  Clarkia purpurea subsp. viminea P. A. Munz 1925-6-20 9887 Humboldt Garberville Comment
  JEPS43314  Claytonia exigua subsp. exigua W. L. Jepson 1902-6-20 1903 Humboldt Ft. Seward Ranch Ridge 1219 Comment
  UCD100846  Claytonia rubra subsp. depressa Linda M. Barker 1976-2-22 1318 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET200312  Claytonia rubra subsp. rubra J. P. Tracy 1913-6-16 4141 Humboldt Dinsmore's Ranch in valley of Van Duzen River opposite Buck Mt. 762 Comment
  HSC48753  Claytonia sibirica Brad Klipfel 1973-6-10 79 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55276  Claytonia sibirica Overton, Butler 1979-8-2 12679 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC64323  Claytonia sibirica J. P. Smith, J. O. Sawyer 1973-5-12 6686 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  UC1223253  Claytonia sibirica Joseph P. Tracy 1951-6-14 19414 Humboldt Snow Camp Comment
  UC162972  Claytonia sibirica Joseph P. Tracy 1908-6 2860 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC99019  Claytonia sibirica C. Witte 2007-5-18 35 Humboldt Along National Forest 1. Approximately 1 mile north of intersection with 5N09. 1456 Comment
  HSC17717  Claytonia washingtoniana R. E. Hafenfeld 1965-4-29 38 Humboldt 1/4 mi. N Squashan Creek near Gold Bluff Beach Rd. Comment
  HSC99239  Claytonia washingtoniana C. E. Fellows 1971-6-7 454 Humboldt 0.35 mi. E of Arlington Rd. on Alder Grove Rd. Comment
  HSC99241  Claytonia washingtoniana C. E. Fellows 1971-6-7 452 Humboldt Clam Beach Bluffs, 9/10 mi. N of jct. of Little River Rd. and Central Ave., E side of Little River Rd. Comment
  HSC14390  Clinopodium douglasii S. V. Thompson 1967-7-24 21 Humboldt Back from beach Comment
  CAS-BOT-BC499335  Clintonia andrewsiana H. C. Cantelow 1936-5-17 1341 Humboldt 3 mi. E. of Oriak Comment
  SEINET3991733  Clintonia andrewsiana Unknown 1914-5-17 Humboldt Freshwater Creek 305 Comment
  CHSC70001  Coincya monensis Jim Belsher 1997-2-13 1 Humboldt Collected in the lot East Southeast of the Manila Community Services District sewage pump station. Empty lot. 6 Comment
  UC1196748  Collinsia grandiflora Joseph P. Tracy 1930-7-6 8854 Humboldt Valley of South Yager Creek 762 Comment
  HSC74316  Collinsia greenei M. A. Baker 1980-7-11 2782 Humboldt Near Red Mtn. 1341 Comment
  JEPS25064  Collinsia heterophylla Joseph P. Tracy 1948-6-13 18049 Humboldt near Harris 609 Comment
  UC582467  Collinsia heterophylla Joseph P. Tracy 1927-5-30 8089 Humboldt vicinity of Garberville 121 Comment
  HSC73177  Collinsia linearis M. A. Baker 1980-5-18 1335 Humboldt Near Black Mtn. 792 Comment
  UC54920  Collinsia linearis Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  HSC49699  Collinsia linearis J. O. Sawyer 1977-7-3 3021 Humboldt At tish Tang at Tang Creek on Rd. S of Gorgan Hole Comment
  JEPS7425  Collinsia linearis Joseph Burtt Davy and Walter C. Blasdale 1899-5 5682 Humboldt Hupa Mt.; North Coast Ranges Comment
  RSA127512  Collinsia linearis Milo S. Baker 1946-6-15 11486 Humboldt Near Head of Willow Cr. Canyon, Trinity Hwy. Comment
  UC727681  Collinsia linearis Milo S. Baker 1946-6-15 11486 Humboldt near Head of Willow Creek Canyon (Trinity Highway); Trinity Highway Comment
  UC1196761  Collinsia parviflora Joseph P. Tracy 1913-6-14 4122 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC38493  Collinsia rattanii D. E. Anderson, J. P. Smith 1971-6-18 - 1093 Humboldt Horse Mtn. Comment
  HSC70372  Collinsia rattanii Gail Newton 1980-6-7 129 Humboldt Near Brush Mtn. 1128 Comment
  UC176057  Collinsia rattanii Joseph P. Tracy 1913-6-17 4190 Humboldt Northern Coast Ranges, Buck Mountain near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  UC147863  Collinsia rattanii Joseph P. Tracy 1908-6 2682 Humboldt Northern Coast Ranges, nw slope of Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  HSC100661  Collinsia sparsiflora Carl C. Marshall May 1887 497 Humboldt Kneeland Prairie. Comment
  JEPS25070  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1932-4-24 9819 Humboldt between Miranda and Redway; South Fork Eel River 91 Comment
  JEPS26356  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1916-5-2 4685 Humboldt garden Eureka; North Coast Ranges 762 Comment
  SBBG29130  Collomia heterophylla H. E. Parks -May-1933 1152 Humboldt Spruce Cove, Trinidad 76 Comment
  RSA125656  Collomia heterophylla E. K. Balls 1957-5-25 22604 Humboldt 8.1 mi. sw. from Dinsmores, State Hwy. 36. 823 Comment
  CHSC98376  Collomia tracyi Dean Wm. Taylor 2004-6-24 19133 Humboldt Horse Mountain, along Titlow Hill Road, 0.4 miles north from the junction with the road to the mountain summit. 1310 Comment
  JEPS26238  Collomia tracyi Joseph P. Tracy 1930-7-16 9046 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC978537  Collomia tracyi Milo S. Baker July, 1923 102 Humboldt near Carlotta; Van Duzen River bed Comment
  CHSC31328  Conium maculatum Mark Stopher 1980-6-4 91 Humboldt Along disturbed roadside of Hwy 101 near Elk River s of Eureka. 1 Comment
  UC164847  Conyza canadensis Joseph P. Tracy 1911-7-9 3458 Humboldt near its mouth along Willow Creek; Northern Coast Ranges, Tributary of Trinity River, Willow Cr 182 Comment
  CAS-BOT-BC181555  Coptis laciniata Doris K. Kildale 1927-7-17 3753 Humboldt Bug Creek 792 Comment
  UC709462  Coptis laciniata Joseph P. Tracy 1941-4-8 16856 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon; , Trinity Highway 762 Comment
  HSC76613  Corallorhiza maculata Teresa Prendusi 1981-6-9 185 Humboldt Near Cedar Camp 1268 Comment
  HSC16583  Corallorhiza mertensiana Doris K. Kildale 1926-5-2 1846 Humboldt Bald Mtn. road, between Bald Mtn. House and junction of Redwood Creek Road. Comment
  CAS-BOT-BC101145  Corethrogyne filaginifolia Joseph P. Tracy 1936-8-17 15157 Humboldt Arcata Bottom 15 Comment
  HSC75232  Corethrogyne filaginifolia D. M. Gordon 1982-9-20 Humboldt End of country road (Lanphere Rd.)on Hunt property. Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  JEPS15869  Corethrogyne filaginifolia Joseph P. Tracy 1934-7-21 13474 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region, on Humboldt Bay 6 Comment
  CAS-BOT-BC212015  Cornus nuttallii Doris K. Kildale 1928-5-19 5152 Humboldt Chalk Mountain 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
  CAS-BOT-BC212176  Cornus sericea Thomas Nelson 1977-6-3 3385 Humboldt Mad River at south end of Mad River Bridge, North Coast Range 53 Comment
  HSC45439  Cornus sericea subsp. sericea Thomas W. Nelson, Jane P. Nelson 1978-7-2 4405 Humboldt Off FS Rd. 2S08 near Pine Mountain, road to Lost Lake. 1463 Comment
  UC668297  Cornus sericea subsp. sericea Joseph P. Tracy 1933-6-7 12519 Humboldt on Van Duzen R. Blue Slide 91 Comment
  HSC6423  Cornus sessilis H. E. Parks, S. T. Parks 1941-7-5 11492 Humboldt Horse Linto Creek. Comment
  UC161494  Coronopus didymus Joseph P. Tracy 1901-7-31 1234 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC93465  Cortaderia selloana Gordon Leppig, Kai Neander 1998-10-12 1104 Humboldt McKinleyville, empty lot on School Rd., behind Mill Creek Shopping Center 30 Comment
  HSC37416  Corylus cornuta subsp. californica Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 509 Humboldt Along Lost Man Creek. 38 Comment
  RSA152313  Corylus cornuta var. californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, along Hookton road. 9 Comment
  RSA167384  Cotula australis Joseph P. Tracy 1943-4-10 17414 Humboldt Eureka Comment
  UC1409109  Cotula coronopifolia Robert F. Thorne and P. Everett 1965-8-8 35272 Humboldt n edge Eureka (e of Hwy 101) 4 Comment
  UC581727  Crepis capillaris Joseph P. Tracy 1934-7-4 13300 Humboldt Lawrence Creek; at crossing of the Kneeland road 457 Comment
  HSC41266  Crepis pleurocarpa Brad Klipfel 1974-7-23 459 Humboldt Horse Mountain Comment
  HSC58320  Crepis pleurocarpa Overton, Butler 1979-8-2 12615 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC78648  Crepis pleurocarpa D. K. Imper 1982-6-29 1479 Humboldt Near Lassics Lookout 1584 Comment
  SEINET2145774 Image available Crepis pleurocarpa Unknown 1933-7-25 12826 Humboldt Horse Mountain 1430 Comment
  CAS-BOT-BC290907  Crepis setosa Henry M. Pollard 1947-8-21 s.n. Humboldt Between Orleans and Boyse [Boise] Creek Comment
  CAS-BOT-BC290910  Crepis setosa Joseph P. Tracy 1947-7-13 17769 Humboldt Hors-Linto [Horse Linto] Creek 152 Comment
  UC1199231  Crocidium multicaule Joseph P. Tracy 1929-3-16 8528 Humboldt at Willow Creek (gravel bar); Trinity River Valley 152 Comment
  HSC91877  Crocosmia X crocosmiiflora E. Mackey 1986-10-7 Humboldt Patrick's Point State Park, picnic area near parking lot for Ceremonial Rock Comment
  UC1364266  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-30 17446 Humboldt 1 mi s Fields Landing (nw corner of overpass of Hwy 101 freeway to Garberville) Comment
  HSC62776  Crocus speciosus M. Dean Griswold Jr. 1979-4-28 34 Humboldt W side of old Hwy. 101 Comment
  UC1103236  Crypsis vaginiflora Joseph P. Tracy 1940-10-17 16773 Humboldt near Dyerville (river bar); Eel River, Camp Grant 48 Comment
  UC1222276  Cryptantha flaccida Joseph P. Tracy 1950-6-15 18810 Humboldt n of Harris (Fort Seward Ranch); Mail Ridge Comment
  UC24717  Cryptantha intermedia Harley P. Chandler Jun 1901 1302 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC102630  Cryptantha torreyana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1615 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC54886  Cryptogramma acrostichoides G. L. Clifton, Griswold 1979-7-25 10895 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  POM182351  Cryptogramma acrostichoides Joseph P. Tracy 1919-9-23 5290 Humboldt Trinity Summit 1829 Comment
  HSC58088  Cuscuta californica G. L. Clifton, Griswold 1979-8-1 11997 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  SEINET905773  Cuscuta campestris Harry B. Tucker 1946-1 s.n. Humboldt Bayside, field, local in small area 6 Comment
  HSC63068  Cuscuta salina David Wheeler 1979-5-28 151 Humboldt S end of sewage oxidation ponds Comment
  UC662622  Cuscuta salina var. major C. C. and S. K. Harris 1941-8-28 1175 Humboldt near Table Bluff; Humboldt Bay Comment
  HSC66829  Cycladenia humilis M. A. Baker 1980-7-24 3197 Humboldt Near Orleans Mtn. 1625 Comment
  UCD60132  Cynosurus cristatus R. Tofsrud 1949-7-1 s. n. Humboldt South edge of Scotia. Comment
  JEPS64087  Cyperus bipartitus Joseph P. Tracy 1931-9-7 9664 Humboldt Trinity R. Valley at Willow Creek; Trinity R, Valley, Willow Creek 152 Comment
  CAS-BOT-BC114624  Cyperus eragrostis Joseph Prince Tracy 1935-7-17 14099 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  SEINET200970  Cyperus melanostachyus Joseph P. Tracy 1920-8-15 5383 Humboldt Klamath River at Bluff Creek. 152 Comment
  SEINET200683  Cypripedium montanum Joseph P. Tracy 1918-5-26 4937 Humboldt Redwood Creek at foot of Grouse Mt. 610 Comment
  UCD136399  Cystopteris fragilis Lincoln Constance 1934-6-2 781 Humboldt Bull Creek Region, South Fork Eel River. Comment
  HSC71613  Cytisus scoparius J. P. Smith 1973-5-26 6833 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SEINET8477238  Cytisus scoparius D. Taylor 2011-5-4 21114 Humboldt Alderpoint Road in the vicinity of snowline fox farm (Larabee Valley 7 1/2 USGA quadrangle placename), vicinity of the road crossing of Knack Creek 341 Comment
  UC1222419  Cytisus scoparius Joseph P. Tracy 1950-6-17 18830 Humboldt Eureka Comment
  CDA4074  Cytisus scoparius T. C. Fuller 1961-3-22 5939 Humboldt North slope, Humboldt Hill, Eureka. 0 Comment
  SEINET200661 Image available Dactylis glomerata J. P. Tracy 1927-6-24 8205 Humboldt Northern Coast Ranges 0 Comment
  UC1541567  Dactylis glomerata Harold E. Parks May 1933 4307 Humboldt Spruce Cove Trinidad; Spruce Cove Comment
  SBBG34665  Dactylis glomerata T. L. Secrest 1948-6-29 Humboldt southern Humboldt County [no specific locality] Comment
  HSC69873  Danthonia californica Thomas W. Nelson 1978-5-28 4096 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  UCD60968  Danthonia californica var. americana R. Tofsrud 1947-7-28 Humboldt Between Capetown and Ferndale. Comment
  UCD61078  Danthonia unispicata R. Tofsrud 1948-9-3 Humboldt Road junction near summit of Horse Mt. 1463 Comment
  RSA20722  Darlingtonia californica Carl B. Wolf 1937-9-11 9318 Humboldt Redwood Hwy 3 miles north of Orick (Davison's Ranch on Prairie Creek) 61 Comment
  JEPS49584  Darmera peltata W. L. Jepson 1902-6-30 1958 Humboldt Redwood Creek; Berry's Ranch Comment
  UC666823  Darmera peltata Joseph P. Tracy 1933-6-7 12517 Humboldt Blue Slide Van Duzen River (on the Van Duzen River) 91 Comment
  UC1198472  Datisca glomerata Joseph P. Tracy 1911-7-10 3494 Humboldt Valley of Trinity River (near mouth of Willow Creek); Northern Coast Ranges, Willow Creek 152 Comment
  HSC46019  Daucus carota Catherine Chin 1978-8-5 94 Humboldt 7th & A St., Arcata Comment
  HSC38938  Daucus pusillus Linda M. Barker 1976-5-13 1486 Humboldt 3 mi. W of Arcata. Comment
  UC1197348  Daucus pusillus J. P. Tracy 1905-6-11 2192 Humboldt Bucksport 0 Comment
  CHSC79694  Delairea odorata Gordon Leppig 2000-2-15 1284 Humboldt McKinleyville. School Road 1/2 mile west of Central Ave. UTM zone 10, 4532N, 406E. 30 Comment
  RSA68806  Delphinium decorum subsp. tracyi Joseph P. Tracy 1932-7-12 10486 Humboldt Head of Brett Hole 1829 Comment
  RSA44425  Delphinium hesperium E. K. Balls, Lee W. Lenz 1956-6-12 21665 Humboldt 9.1 miles NE from Blue Lake along Hwy 299, Arcata to Willow Creek. Comment
  JEPS23382  Delphinium hesperium subsp. hesperium Milo S. Baker 1923-7-20 31 Humboldt head of Yager Creek Comment
  HSC45097  Delphinium nudicaule R. Sutherland 1978-4-24 13 .24478 Humboldt Kinsey Ridge 311 Comment
  HSC45587  Delphinium nudicaule Diane L. Reed 1978-5-27 128 Humboldt Horse Mtn., on Titlow Hill Rd. 1.5 mi. from junction with Hwy. 299 Comment
  HSC98172  Delphinium nudicaule Allan R. Marshall 1962-5-11 9 Humboldt 50 yds. in front of N side of Hwy. 299 610 Comment
  HSC38707  Delphinium nuttallianum J. P. Smith 1976-5-29 8818 Humboldt Horse Mtn. 1402 Comment
  HSC70229  Delphinium nuttallianum M. A. Baker 1980-6-8 1897 Humboldt Near Buck Flat. 1554 Comment
  HSC63284  Delphinium nuttallianum M. A. Baker 1979-6-27 933 Humboldt Head of Oregon Creek Comment
  UC1126089  Delphinium trolliifolium A. E. Wieslander 1931-5-21 210 Humboldt Kneeland China Flat Quadrangle Comment
  UC160942  Delphinium trolliifolium Joseph P. Tracy Jul 27 1908-Jul 30 1908 2712 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  CDA14362  Deschampsia cespitosa P. Haggard 1996-7-8 s.n. Humboldt North Coast; North Coast Railroad right-of-way, Eureka. 0 Comment
  UC1103224  Deschampsia danthonioides Joseph P. Tracy 1908-6 2753 Humboldt opposite Buck Mt.; Northern Coast Ranges, valley of Van Duzen R. 762 Comment
  UC1152018  Deschampsia danthonioides Joseph P. Tracy 1951-6-21 19531 Humboldt back of Everett Beck ranch house Hydesville (bed of former Goose Lake) Comment
  CAS-BOT-BC201772  Deschampsia elongata W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek & Eel River Comment
  CAS-BOT-BC201778  Deschampsia elongata Doris K. Kildale 1928-7-1 5309 Humboldt French Camp - Bald Hills - Orick - Martin's ferry road Comment
  HSC26779  Deschampsia elongata Thomas W. Nelson 1971-5-31 463 Humboldt 915 Comment
  HSC58645  Deschampsia elongata G. L. Clifton, Griswold 1979-7-31 11665 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC9613  Deschampsia elongata R. D. Rogers 1964-5-2 32 Humboldt Janes Creek area, 1 mi. N of Arcata, logging road. Comment
  HSC42793  Dicentra formosa Rick Cooper 1977-4-23 14 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  CDA24607  Dicentra formosa C. Sinkiewicz 2002-4-17 Humboldt McKinnleyville, Dows Prairie. Comment
  HSC26869  Dicentra formosa Clifton Raymond Chesbrough 1973-6-19 93 Humboldt 1/2 mi. N of College Cove Comment
  HSC62875  Dicentra formosa J. M. DiTomaso 1979-4-21 901 Humboldt On Stagecoach Rd. at College Cove parking lot, Trinidad Comment
  HSC8366  Dicentra formosa J. R. Kahl 1962-4-2 13 Humboldt 2 mi. S of Trinidad along Hwy. 101, 10 yds. off road Comment
  RSA10046  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1927-8-7 8313 Humboldt Trinity River Valley, at Willow Creek Comment
  CAS-BOT-BC483665  Dichelostemma capitatum Doris K. Kildale 1927-4-17 3097 Humboldt Breeland Bridge 1/2 mile west of Garberville 114 Comment
  UC1198170  Dichelostemma capitatum Joseph P. Tracy 1933-6-18 12607 Humboldt e of Redwood Creek (on Trinity Highway); Berry's Mt. 762 Comment
  HSC38076  Dichelostemma capitatum subsp. capitatum Thomas W. Nelson, James Nelson 1976-5-30 2631 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC666883  Dichelostemma congestum Joseph P. Tracy 1927-5-8 7965 Humboldt Phillipsville South Fork of Eel River 121 Comment
  UC1198164  Dichelostemma congestum Joseph P. Tracy 1917-6-17 4814 Humboldt near Field's Landing (Still Farm, near Humboldt Bay); Northern Coast Ranges, Humboldt Bay 15 Comment
  CAS-BOT-BC501023  Dichelostemma ida-maia H. C. Cantelow 1935-5-30 850 Humboldt Near Garberville Comment
  UC175926  Dichelostemma ida-maia Joseph P. Tracy 1913-6-20 4227 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  CAS-BOT-BC500980  Dichelostemma multiflorum L. B. Kildale 1930-6-1 9752 Humboldt Klamath River at Bluff Creek Comment
  CAS-BOT-BC153324  Diplacus layneae Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  CHSC579  Dipsacus fullonum M. Anthony 1960-5-14 Humboldt Arcata. Comment
  JEPS61826  Disporum hookeri W. L. Jepson 1932-8-8 16489 Humboldt Chaney ranch, Canoe Creek Comment
  UC30077  Disporum hookeri Harley P. Chandler May, 1901 1089 Humboldt North Coast Ranges 152 Comment
  UC1197653  Disporum smithii J. P. Tracy 1906-4-22 2417 Humboldt immediate vicinity of Eureka 0 Comment
  UCR67630  Disporum smithii Michael A. Hanson 1990-5-21 71 Humboldt Little Creek Trail in Redwood National Park; on the E side of Hwy 101 c. 7 mi (11 km) south of Klamath. 325 Comment
  HSC9637  Distichlis spicata J. Wendell Howe 1934-7-19 1311 Humboldt Edge of Humboldt Bay Comment
  JEPS14670  Dodecatheon alpinum Joseph P. Tracy 1932-7-14 10565 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  HSC82394  Dodecatheon jeffreyi Thomas W. Nelson 1979-7-11 5007 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  JEPS14441  Downingia elegans W. L. Jepson 1927-7-3 12363 Humboldt Miranda South Fork of Eel River 228 Comment
  HSC63143  Draperia systyla M. A. Baker 1979-6-28 949 Humboldt NE side near summit of Packsaddle Ridge just N of the most E tip of the N fork of Mill Creek Comment
  HSC6461  Dudleya farinosa D. E. Anderson 1961-9-2 1773 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  HSC7297  Dulichium arundinaceum D. E. Anderson 1962-9-14 2340 Humboldt Fish Lake area Comment
  UC526835  Echinochloa muricata var. microstachya Joseph P. Tracy 1930-10-12 9209 Humboldt Eel River on gravel bars Alton to Fortuna; Northern Coast Region, Eel River 15 Comment
  UC1103659  Eleocharis bella Joseph P. Tracy 1931-9-7 9651 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC213006  Eleocharis bella Joseph P. Tracy 1919-5-31 5180 Humboldt shores of Lack Pond, near Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC112839  Eleocharis macrostachya David Daniels Keck 1938-8-5 4768 Humboldt Big Lagoon, on shore in drying clay mud. 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
  POM126088  Eleocharis parvula Joseph P. Tracy 1924-8-3 6744 Humboldt Stone Lagoon Comment
  HSC58814  Eleocharis quinqueflora G. L. Clifton, Griswold 1979-8-1 12054 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC62866  Elodea canadensis J. M. DiTomaso 1979-5-16 1016 Humboldt Pond below Fern Lake just E of gymnasium on Humboldt State University campus, Arcata. Comment
  UC212885  Elymus X hansenii Joseph P. Tracy 1919-9-23 5279 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC39716  Elymus X vancouverensis D. E. Anderson, J. P. Smith 1971-6-28 - 1262 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC58658  Elymus glaucus G. L. Clifton 1979-7-31 11862 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA183623  Elymus glaucus D. E. Anderson 1965-5-15 3718 Humboldt Along Hw. 96, 1.9 miles north of Willow Creek. Comment
  RSA44455  Elymus glaucus Henry M. Pollard 1948-7-19 s.n. Humboldt River road between Orleans and Van Fleet Ranch Comment
  UC1056067  Elymus glaucus J. I. Mallory 1955-6-7 113 Humboldt Luke Prairie Quad. 29-B-3 (n end) 350 Comment
  UC682043  Elymus glaucus subsp. virescens G. L. Stebbins Jr. and G. L. Church 1941-5-26 3106 Humboldt just n Little River (s of Trinidad, bluff facing sea) Comment
  HSC73480  Elymus multisetus Gail Newton 1980-7-11 1327 Humboldt Near Red Mtn. 1341 Comment
  RSA10129  Elymus trachycaulus subsp. trachycaulus Joseph P. Tracy 1926-7-5 7736 Humboldt Valley of South Yager Creek. 762 Comment
  SEINET200931  Elytrigia repens J. P. Tracy 1936-8-25 15160 Humboldt Eureka 30 Comment
  SEINET200980  Elytrigia repens J. P. Tracy 1948-7-24 18077 Humboldt Eureka 30 Comment
  UC1414225  Empetrum nigrum subsp. hermaphroditum Gary S. Lester 1975-4-6 604 Humboldt n Trinidad (Megwil Point); Trinidad State Beach, Elk Head 15 Comment
  UCD117423  Empetrum nigrum subsp. hermaphroditum James Payne Smith Jr. 1975-3-31 8048 Humboldt Megwill Point on Elk Head, just north of College Cove. Comment
  HSC99549  Epilobium brachycarpum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 214 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA167259  Epilobium brachycarpum Joseph P. Tracy 1950-9-10 19356 Humboldt Bear River Ridge 610 Comment
  HSC43233  Epilobium brachycarpum R. Sutherland 1976-8-18 2 .18876 Humboldt Briceland 183 Comment
  JEPS31510  Epilobium campestre Joseph P. Tracy 1938-7-5 16010 Humboldt open flat by old Strong's District School House (5 mi e of town); Carlotta 45 Comment
  HSC76621  Epilobium ciliatum subsp. ciliatum Teresa Prendusi 1981-5-7 117 Humboldt Near Slate Creek Butte 1158 Comment
  HSC79497  Epilobium ciliatum subsp. ciliatum Kenneth Clark 1979-6-30 453 Humboldt Dead Man's Gulch 8 Comment
  JEPS39219  Epilobium ciliatum subsp. ciliatum W. L. Jepson 1936-8-15 17899 Humboldt 2 mi e Carlotta Comment
  HSC49645  Epilobium ciliatum subsp. glandulosum J. P. Smith, Steve Selva 1970-6-30 4138 Humboldt Comment
  UC583056  Epilobium ciliatum subsp. watsonii P. A. Munz 1936-8-13 14385 Humboldt roadside ditch Clam Beach Comment
  HSC98553  Epilobium densiflorum Cara Witte 2007-8-8 620 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1547 Comment
  HSC98093  Epilobium glaberrimum subsp. fastigiatum Cara Witte 2007-7-11 477 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  RSA181877  Epilobium hallianum Joseph P. Tracy 1931-6-28 9589 Humboldt Northern Coast Ranges: Buck Mountain, lower foothills of its northwest slope 762 Comment
  UC562513  Epilobium hornemannii subsp. hornemannii Joseph P. Tracy 1935-7-24 14183 Humboldt near Ranger Station (along streamlet); Trinity Summit 1828 Comment
  HSC67186  Epilobium minutum Thomas W. Nelson, James Nelson 1980-6-10 5422 Humboldt Along road to Red Mtn., 0.5 mi. W of junction with Swayback Ridge Rd. 1372 Comment
  UC169920  Epilobium minutum Harley P. Chandler May, 1901 1125 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC204002  Epilobium torreyi Joseph P. Tracy 1918-7-6 5050 Humboldt near Humboldt-Mendocino County Line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  POM290911  Epipactis gigantea Lyman Benson 1928-7-11 493 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  UC666979  Epipactis gigantea Joseph P. Tracy 1927-7-4 8243 Humboldt Blue Slide Van Duzen River 91 Comment
  HSC91902  Equisetum arvense E. Mackey 1987-8-28 Humboldt Patrick's Point State Park, Palmer's Point Comment
  UC526938  Equisetum telmateia subsp. braunii Joseph P. Tracy 1934-6-28 13268 Humboldt by Salmon Creek Northern Coast Ranges 9 Comment
  SEINET10834153  Equisetum telmateia var. braunii Mary Susan Taylor 1977-8-5 Taylor 1430 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  UC1145099  Eragrostis mexicana subsp. virescens Joseph P. Tracy 1950-9-22 19372 Humboldt 8 mi below Orleans; Klamath River near Slate Creek 121 Comment
  CHSC68552  Erechtites glomeratus Vernon H. Oswald 1997-4-29 8350 Humboldt Humboldt Bay NWR, levee north of Long Pond along the arm of South Humboldt Bay separating Teal Island from the main part of the refuge. Comment
  RSA638987  Erechtites glomeratus R. F. Thorne, Percy C. Everett 1965-8-8 35239 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  POM356838  Erechtites minimus B. C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  CAS-BOT-BC299906  Erechtites minimus Henry M. Pollard 1948-7-21 s.n. Humboldt Near Ferrian Ranch, Orleans Comment
  HSC57993  Eremogone congesta var. suffrutescens G. L. Clifton, Griswold 1979-7-31 11754 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CDA5472  Erica lusitanica T. C. Fuller 1961-3-22 5938 Humboldt North slope, Humboldt Hill, Eureka. 0 Comment
  RSA697104  Erigeron biolettii J. Russell Bruff 1937-8-17 935 Humboldt Richardson Grove, bed of Eel River. Comment
  CAS-BOT-BC296112  Erigeron foliosus var. confinis Joseph P. Tracy 1935-6-23 13967 Humboldt French Camp Ridge 1066 Comment
  UC165069  Erigeron foliosus var. confinis Joseph P. Tracy 1911-7-6 3353 Humboldt Mountain slopes along road between Three Creeks and mouth of Willow Creek 762 Comment
  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
  UC895847  Erigeron foliosus var. mendocinus L. R. Abrams 1916-7-11 6055 Humboldt at mouth of Grizzly Creek (on Van Duzen River); Van Duzen River, Grizzly Creek Comment
  RSA39091  Erigeron foliosus var. mendocinus P. A. Munz 1948-8-15 12360 Humboldt 1 mile west of Van Duzen Redwood State Park Comment
  CDA4960  Erigeron glaucus G. D. Barbe, T. C. Fuller 1974-6-17 1834 Humboldt Lower Pacific Drive at Sail Court, west of the golf course, south of the sewer plant, Shelter Cove. 0 Comment
  SD40123  Erigeron glaucus Edith A. Purer 1932-7-27 4143 Humboldt Comment
  CAS-BOT-BC295171  Erigeron inornatus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC39604  Erigeron inornatus var. inornatus Thomas W. Nelson, Jane P. Nelson 1976-7-26 3038 Humboldt S facing slope along ridge W of Lassic Peak 1707 Comment
  UC87824  Erigeron inornatus var. inornatus W. W. Price 1890-6-5 Humboldt Comment
  HSC5528  Erigeron philadelphicus Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  HSC71370  Erigeron philadelphicus J. P. Smith 1973-5-26 6843 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SDSU3945  Erigeron philadelphicus var. philadelphicus D. F. Howe 1963-7-8 3621 Humboldt 8.2 miles west of Bridgeville on Cal. 36, Van Duzen River. 91 Comment
  UC581734  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1936-6-17 1463 Humboldt on nw slope Buck Mountain; Northern Coast Ranges, , Burr Valley 1066 Comment
  UC1223009  Erigeron robustior Joseph P. Tracy with Mr. Murphy 1951-6-26 19581 Humboldt Twin Lakes vicinity Comment
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Sep 3 2011
  UC87665  Erigeron strigosus var. strigosus Harley P. Chandler June 1901 1402 Humboldt Klamath River North Coast Ranges 243 Comment
  UC31538  Erigeron supplex H. N. Bolander 1863-1 4754 Humboldt Comment
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Feb 20 2007
  HSC24402  Eriodictyon californicum J. O. Sawyer 1970-6-24 2224 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC70691  Eriodictyon californicum Gail Newton 1980-7-15 1566 Humboldt Near Sims Mtn. 1311 Comment
  HSC55020  Eriogonum compositum Overton, Butler 1979-7-31 11429 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC55092  Eriogonum compositum G. L. Clifton, Griswold 1979-7-31 11779 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  CAS-BOT-BC259148  Eriogonum latifolium Marcus E. Jones 1931-7-12 28806 Humboldt Alton Comment
  HSC17296  Eriogonum latifolium R. I. Bonn 1965-5-7 25 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  LA206930  Eriogonum latifolium Carl Epling; Mrs. Epling 1935-8-15 sn Humboldt Arcata Spit Comment
  LA206936  Eriogonum latifolium Carl Epling; Mrs. Epling 1935-8-15 sn Humboldt Arcata Spit Comment
  SBBG1531  Eriogonum latifolium H. and M. Dearing 1939-5-25 3438 c Humboldt near Samoa Comment
  UC1222341  Eriogonum latifolium Joseph P. Tracy June 1950 18754 Humboldt near ocean shore (s of point of Cape; Devil's Gate); Cape Mendocino, Devil's Gate 3 Comment
  CAS-BOT-BC259286  Eriogonum lobbii Dave Imper 1985-7-30 s.n. Humboldt Six Rivers National Forest. N of Orleans Mountain 1737 Comment
  HSC60052  Eriogonum nudum var. nudum M. A. Baker 1978-5-6 487 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  RSA393303  Eriogonum nudum var. pubiflorum H. M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  CAS-BOT-BC253053  Eriogonum roseum Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  HSC75959  Eriogonum umbellatum Overton, Butler 1979-7-24 9739 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC1225801  Eriogonum umbellatum var. argus Joseph P. Tracy 1947-7-5 17781 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  SEINET5332487 Image available Eriogonum umbellatum var. nelsoniorum J. L. Reveal 2001-7-18 8345 Humboldt Along U.S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt round and 9.3 air miles westof Hyampom, 1295 Comment
  HSC54892  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-7-25 10932 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC55026  Eriogonum umbellatum var. stellatum Overton, Butler 1979-7-31 11448 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC44132  Eriophyllum lanatum var. achilleoides Thomas W. Nelson, Jane P. Nelson 1977-7-4 3586 Humboldt Along W side of road N of Alder Springs, head of N Fork of Conley Creek 1280 Comment
  UC984818  Eriophyllum lanatum var. achilleoides A. M. Vollmer and L. Beane 1951-6-6 125 Humboldt on road between Orick and Weitchpec Comment
  HSC91916  Eriophyllum lanatum var. arachnoideum E. Mackey 1986-7-21 Humboldt Patrick's Point State Park; Wedding Rock Trail 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
  HSC67463  Eriophyllum lanatum var. grandiflorum J. P. Smith, Steve Selva 1970-6-14 3820 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  POM358035  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1977-7-4 3578 Humboldt West side of road north from Alder Spring, head of North Fork of Conley Creek 1463 Comment
  UC1199144  Eriophyllum lanatum var. lanceolatum Joseph P. Tracy 1939-4-29 16250 Humboldt near mouth of Slate Creek; Klamath River 121 Comment
  UC1718077  Eriophyllum lanatum var. lanceolatum John S. Mooring 1970-7-7 2497 Humboldt along and near hwy 96, 0.5 miles N of confluence of Slate Creek and Klamath River Comment
  CDA17342  Eryngium articulatum P. Haggard 2004-8-15 PDR 1285928 Humboldt North Coast Ranges; Six Rivers National Forest on Friday Ridge Rd, Willow Creek. 0 Comment
  UC1199175  Erysimum capitatum Joseph P. Tracy 1922-5-29 6078 Humboldt head of South Yager Creek Northern Coast Ranges 762 Comment
  HSC53822  Erysimum capitatum var. capitatum Terry Griswold, Marvin Butler 1979-7-10 6266 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC1197649  Erythronium californicum Joseph P. Tracy 1933-7-11 12709 Humboldt Grouse Mountain 1524 Comment
  UC249502  Erythronium californicum Joseph P. Tracy 1922-4-30 6037 Humboldt mountain slopes along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 609 Comment
  CAS-BOT-BC504307  Erythronium californicum Doris K. Kildale 1928-5-1 5983 Humboldt MacLellan Mountain 914 Comment
  CAS-BOT-BC504310  Erythronium californicum Michalski; Raum; Hopson 1987-4-1 87 Humboldt Larabee Buttes Comment
  UC1197640  Erythronium californicum J. P. Tracy 1908-6-7 2611 Humboldt in woods Butler Valley 152 Comment
  UC1225861  Erythronium grandiflorum Joseph P. Tracy 1942-6-23 17255 Humboldt near Water Dog Lakes; Trinity Summit 1828 Comment
  SEINET12054368  Erythronium grandiflorum J. P. Tracy 1950-1 18616 Humboldt 2 mi W of Dinsmore's, Buck Mountain, lower foothills of NW slope 762 Comment
  HSC40548  Erythronium grandiflorum subsp. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-23 Humboldt Beside Rd. 1S07 at pass between Black Lassic and E peak of Signal Peak group 1707 Comment
  CAS-BOT-BC403035  Eschscholzia californica Doris K. Kildale 1927-6-25 3548 Humboldt Shelter Cove Comment
  RSA167199  Eucephalus glabratus Joseph P. Tracy 1941-8-24 17043 Humboldt South Fork Mountain, near McKay Camp Comment
  JEPS20472  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  UC1199358  Euchiton sphaericus Joseph P. Tracy 1931-8-8 9608 Humboldt along Lord-Ellis Road (headwaters of North Fork of Mad River); North Fork of Mad River 609 Comment
  BLMAR397  Euonymus occidentalis var. occidentalis Jennifer Wheeler 2004-7-15 397 Humboldt Jacoby creek, Growing in mixed conifer forest 304 Comment
  HSC98779  Euphorbia crenulata Cara Witte 2008-6-27 766 Humboldt Along National Forest 1 on Kinsey Ridge. 1.5 mi. NE of intersection with 4N09. 1317 Comment
  UC502958  Euphorbia crenulata Joseph P. Tracy 1929-4-14 8540 Humboldt Phillipsville Northern Coast Ranges (slopes and groves facing South Fork of Eel River) 121 Comment
  UC1199325  Euthamia occidentalis Joseph P. Tracy 1918-9-29 5112 Humboldt 4 mi above mouth South Fork of Eel River; Northern Coast Ranges, South Fork Eel River above its mouth 60 Comment
  SEINET3243998  Euthamia occidentalis Joseph P. Tracy 1931-1 9636 Humboldt Lack Pond; in Trinitiy River Valley, opposite mouth of Willow Creek. 152 Comment
  CAS-BOT-BC278180  Festuca W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek & Eel River Comment
  HSC9819  Festuca arundinacea E. W. Styskel 1964-4-28 74 Humboldt End of Davis St. at edge of Eel River in Rio Dell. Comment
  UCD65873  Festuca californica subsp. californica R. Tofsrud 1947-7-1 203 Humboldt Between Alder Point and Zinea. Comment
  HSC75355  Festuca occidentalis J. O. Sawyer, M. A. Ericksen 1980-7-18 3644 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  UC1103722  Festuca occidentalis Joseph P. Tracy 1934-7-18 13422 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC278967  Festuca rubra H. S. Yates 1936-6-17 5697 Humboldt Lower northwest slope of Buck Mountain 792 Comment
  UC1103709  Festuca subuliflora Joseph P. Tracy 1937-5-30 15306 Humboldt 5 mi n Blocksburg; Larrabee Creek 457 Comment
  UC205480  Foeniculum vulgare Joseph P. Tracy 1919-9-14 5221 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  CHSC68501  Fragaria chiloensis Vernon H. Oswald 1997-4-10 8327 Humboldt Elk Head, north end of Trinidad State Beach. Near the bluffs overlooking the ocean. 30 Comment
  RSA114996  Fragaria chiloensis E. K. Balls, Lee W. Lenz 1955-5-15 20737 Humboldt 12.6miles SW of Ferndale along Old Coast road to Capetown 259 Comment
  CAS-BOT-BC453516  Fragaria chiloensis W. R. Dudley 1899-6-1 s.n. Humboldt Pennisula of Eureka Comment
  RSA46479  Fragaria chiloensis Doris K. Kildale 1927-3-24 2947 Humboldt Fleener Creek Comment
  SEINET4090923  Fragaria chiloensis O. M. Clark 1932-1 702 Humboldt North Eureka. 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
  HSC70357  Fragaria vesca M. A. Baker 1980-6-7 1866 Humboldt Near Ammon Creek 732 Comment
  UCSB22388  Fragaria vesca Jensen, Karen 1965-4-14 Humboldt Trinidad State Park 15 Comment
  UCD113269  Fragaria virginiana Gunter Staudt; H. Ahmadi 1989-5-15 313 Humboldt North of Trinidad along Highway, near Seawood Drive exit. Comment
  HSC41312  Frangula californica Brad Klipfel 1974-9-2 544 Humboldt Horse Mtn. Comment
  CAS-BOT-BC52733  Frangula californica subsp. californica L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road Comment
  CAS-BOT-BC52736  Frangula californica subsp. californica Carl B. Wolf 1927-8-30 1249 Humboldt At a small creek 3 miles south of Thorn. Comment
  UCD112819  Frangula purshiana Linda M. Barker 1976-7-5 1648 Humboldt Lanphere-Christensen Dunes 3 miles west of Arcata. Comment
  HSC65470  Fritillaria affinis M. A. Baker 1980-6-8 1900 Humboldt Near Buck Flat. 1554 Comment
  POM169380  Fritillaria affinis Joseph P. Tracy 1901-4-26 1045 Humboldt Immediate vicinity of Eureka; Humboldt Hill 0 Comment
  UC176687  Fritillaria affinis Joseph P. Tracy 1913-6-17 4179 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC22059  Fritillaria affinis Joel W. Reinhard 1966-5-6 31 Humboldt Two beaches N of College Cove Comment
  HSC96863  Fritillaria affinis Frances Reuss Harmon 2001-3-31 17 Humboldt Grays Falls picnic area, SE edge of open rocky soil Comment
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Apr 21 2014
  SEINET255379  Fritillaria lanceolata Joseph P. Tracy 1913-6-20 4228 Humboldt Lower foothills of Buck Mountain, on its NW slope. 762 Comment
  CAS-BOT-BC130446  Fritillaria purdyi Doris K. Kildale 1926-3-21 1575 Humboldt Kneeland Prairie - summit 853 Comment
  HSC37363  Galium aparine Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 495 Humboldt Along Lost Man Creek. 38 Comment
  HSC79511  Galium aparine Kenneth Clark 1980-6-14 695 Humboldt N Fork of Dead Man's Gulch 61 Comment
  HSC79374  Galium aparine Kenneth Clark 1980-3-27 551 Humboldt Above S Fork of Dead Man's Gulch 183 Comment
  UCSB22663  Galium aparine Jensen, Karen 1965-4-15 Humboldt 0.2 km to the west of Hwy 101 at Miranda turnoff 91 Comment
  UC1586848  Galium californicum subsp. californicum Juha Pykala and D. H. Norris 1987-5-20 802 Humboldt along Bull Creek Road from Panther Gap to 4 miles S of Panther Gap Comment
  JEPS6482  Galium divaricatum Joseph P. Tracy 1916-6-19 4730 Humboldt Alder Point Northern Coast Ranges 152 Comment
  JEPS52848  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3858 Humboldt 6.8 mi w mouth of Bull Creek; Bull Creek (settlement) 91 Comment
  UC1177931  Galium muricatum Francia Chisaki and Gene B. Newcomb 1958-6-23 1164 Humboldt road to Shelter Cove 4 mi e junction with road to Ettersburg 579 Comment
  SEINET7722393  Galium nuttallii Chesnut, Drew Humboldt S. Fork Mt. Comment
  JEPS6496  Galium parisiense W. L. Jepson 1902-6 1981 Humboldt Hupa Comment
  UC602539  Galium parisiense Joseph P. Tracy 1911-7-4 3278 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC39794  Galium trifidum Peter Sorensen 1976-8-8 Humboldt King Salmon 0 Comment
  UC1196084  Galium trifidum var. pusillum Joseph P. Tracy 1935-7-27 14303 1/2 Humboldt McKay Prairie Trinity Summit 1584 Comment
  HSC76233  Galium triflorum Teresa Prendusi 1981-7-9 166 Humboldt Near Cedar Camp. 1268 Comment
  RSA41964  Galium triflorum Ella Dales Cantelow 1936-5-17 1407 Humboldt 3 miles S of Orick Comment
  HSC98666  Galium triflorum Cara Witte 2007-7-2 398 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1589 Comment
  UCD132373  Gamochaeta ustulata Linda M. Barker 1976-7-5 1539 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC188537  Garrya elliptica Doris K. Kildale 1926-9-12 2667 Humboldt Klamath River near Requa. On trail between Ferry and bridge Comment
  CHSC77463  Garrya elliptica Vernon H. Oswald 2000-4-3 9908 Humboldt Elk Head northwest of Trinidad. 24 Comment
  HSC89538  Garrya elliptica M. Roantree 1985-4-25 1 Humboldt E side of Trinidad Head. Comment
  JEPS66718  Garrya elliptica Joseph P. Tracy 1925-8-14 7231 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  UC154056  Garrya elliptica J. P. Tracy 1900-12-22 975 Humboldt immediate vicinity Eureka 0 Comment
  SEINET12137511  Garrya elliptica M. S. Taylor 1982-1 5181 Humboldt Samoa, under bridge, ca 1 mi NW of Eureka Comment
  HSC82186  Garrya fremontii Thomas W. Nelson 1977-6-15 3444 Humboldt Along old road to ski area 1372 Comment
  OBI35859  Garrya fremontii David J. Keil 1983-7-2 17336 Humboldt Horse Mtn Summit SW of Willow Crk Comment
  JEPS71220  Gastridium ventricosum W. L. Jepson 1936-8-7 17855 Humboldt Upper Butte Creek Bear Buttes; , Bear Buttes Comment
  UC1046521  Gaultheria ovatifolia Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3413 Humboldt meadow at Snow Camp, ridge between Mad River and Redwood Creek, Bald Mountain Snow Camp; Bald Mountain, Snow Camp 1432 Comment
  UC902050  Gaultheria ovatifolia Joseph P. Tracy 1949-8-11 18456 Humboldt Snow Camp 1432 Comment
  HSC22505  Gaultheria shallon J. R. Eichelberger 1964-5-5 68 Humboldt N side of the Mad River at the entrance to Azalea State Reserve Comment
  HSC41340  Gaultheria shallon Brad Klipfel 1974-9-7 560 Humboldt Horse Mtn., E fork of Willow Creek. Comment
  RSA249504  Gaultheria shallon R. F. Thorne, Percy C. Everett 1965-8-9 35287 Humboldt Big Lagoon. 3 Comment
  UC527560  Gaultheria shallon C. B. Wolf 1931-8-29 Humboldt near summit of Orick Hill, on road to Weitchpec Orick Hill 304 Comment
  SEINET11996979  Gaultheria shallon F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 293 a Humboldt 2.4 mi W of US 101 on CA 169 from Klamath to Klamath Glen along Klamath River 50 Comment
  JEPS27564  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9051 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC144070  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1908-6 2800 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS27606  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10400 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  POM214930  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1930-7-16 9069 Humboldt Northern Coast Ranges: South Fork Mountain; openings in fir forest near McKay Camp. 1677 Comment
  RSA46841  Gayophytum diffusum subsp. parviflorum Doris K. Kildale 1927-7-22 3808 Humboldt Lasseck s Peaks Comment
  UC202459  Gayophytum heterozygum Joseph P. Tracy 1919-9-18 5248 Humboldt Trinity Summit Northern Coast Ranges 1524 Comment
  UC144065  Gayophytum humile Joseph P. Tracy 1908-6 2688 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC505122  Gayophytum humile Joseph P. Tracy 1932-7-11 10424 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  JEPS47044  Gentiana affinis var. ovata Joseph P. Tracy 1930-7-27 9110 Humboldt Bear River Ridge North Coast Ranges 609 Comment
  HSC34277  Gentiana plurisetosa K. Irwin 1975-8-13 Humboldt North Trinity Mtn. Area, below Mill Creek Lake Comment
  HSC22015  Gentiana sceptrum Thomas W. Nelson 1970-10-17 237 Humboldt Big Lagoon Comment
  RSA183533  Gentiana sceptrum D. E. Anderson 1963-9-6 2810 Humboldt Big Lagoon Sphagnum Bog Comment
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Feb 26 2014
  POM318969  Gentiana sceptrum Patricia Wilder 1968-8-21 4390 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  UC524128  Gentiana sceptrum Ira L. Wiggins 1932-7-19 5892 Humboldt 1.5 mi n Trinidad Head Comment
  JEPS61428  Geranium dissectum Lincoln Constance 1934-6-7 833 Humboldt Johnson Prairie South Fork Eel River, Bull Creek Region Comment
  HSC8644  Geranium dissectum W. D. Stevens 1967-7-14 36 Humboldt Along Bear Creek, 1 mi. upstream from new Hwy. 101 bridge. Comment
  UC668044  Geranium molle Joseph P. Tracy 1933-5-19 12197 Humboldt Alton to Fortuna (along the Eel River); Eel River 15 Comment
  HSC44760  Geranium oreganum Maralyn O'Meara 1972-6-8 80 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  RSA0029454  Geranium oreganum Volney Rattan 1882-06 s.n. Humboldt Van Dusen [Van Duzen] Hills. Comment
  RSA21318  Gilia capitata C. B. Wolf 1937-8-13 9219 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  CHSC52941  Gilia millefoliata L. P. Janeway 1984-4-11 731 Humboldt On the North Spit of Humboldt Bay; Northwest of the boat ramp and north of the Coast Guard Sta. 4 Comment
  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
  UC1199277  Glebionis segetum Joseph P. Tracy 1933-8-22 12977 Humboldt at Eureka 6 Comment
  UC1223069  Glebionis segetum Joseph P. Tracy 1950-6-17 18831 Humboldt at Eureka Comment
  CAS-BOT-BC218433  Glehnia littoralis subsp. leiocarpa W. R. Dudley 1899-6-1 s.n. Humboldt Penninsula of Humboldt Bay Comment
  HSC21497  Glehnia littoralis subsp. leiocarpa S. J. Hawks 1965-5-14 62 Humboldt Clam Beach Comment
  UC1197366  Glehnia littoralis subsp. leiocarpa Hattie F. Tracy 1902-6-17 1748 Humboldt sand hills of Ocean Beach at Samoa opposite Eureka Comment
  SEINET200359 Image available Glyceria elata J. P. Tracy 1935-7-25 114251 Humboldt Trinity Summit lower end of Brett Hole 1585 Comment
  UC1108977  Glyceria elata Francia Chisaki and Helen K. Sharsmith 1959-8-22 4756 Humboldt Happy Camp Inner North Coast Ranges (just over Trinity County line) 914 Comment
  HSC93934  Glyceria fluitans Gordon Leppig, Sylvia Leppig 1999-4-24 1125 Humboldt Arcata, Alder Grove Pond. 18 Comment
  CDA5423  Gnaphalium japonicum T. C. Fuller 1962-8-6 9358 Humboldt Highway 299 to Blue Lake, 2.6 miles east of Bald Mtn. Summit Road. 1 mile west of Green Point School. 0 Comment
  HSC99567  Gnaphalium palustre K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 232 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
  JEPS20477  Gnaphalium palustre Joseph P. Tracy 1933-8-30 13043 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain (bed of dried up pond) 1524 Comment
  UCR48596  Gnaphalium ramosissimum R. D. Goeden, Don W. Ricker 1987-9-2 870902- 8 Humboldt Loleta, along Cannibal Road 8 Comment
  HSC100433  Gnaphalium sprengelii Carl C. Marshall Sep 1887 440 Humboldt Coast region. Comment
  HSC100579  Godetia purpurea Carl C. Marshall Jun 1886 295 Humboldt Pine Creek. Comment
  HSC54588  Goodyera oblongifolia Overton, Butler 1979-7-24 9652 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  IRVC21928  Goodyera oblongifolia J. W. Johnson Jul 1962 1075 Humboldt Base of the Samoa Peninsula in the Lamphere-Christensen Dunes Preserve. Comment
  UC1196435  Goodyera oblongifolia Joseph P. Tracy 1934-8-31 13642 Humboldt Kneeland Prairie 762 Comment
  UC582833  Goodyera oblongifolia P. A. Munz 1936-8-10 14336 Humboldt 15 mi e of Fortuna (Van Duzen River); Van Duzen River Comment
  CAS-BOT-BC304731  Grindelia hirsutula Joseph P. Tracy 1918-7-7 5038 Humboldt Northern Coast Ranges. Near Garberville 121 Comment
  CAS-BOT-BC304740  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  CAS-BOT-BC304757  Grindelia hirsutula Doris K. Kildale 1927-6-25 3554 Humboldt Shelter Cove Comment
  CAS-BOT-BC304761  Grindelia hirsutula Carl B. Wolf 1927-8-29 1214 Humboldt Devil's Gate, south of Cape Mendocino Comment
  HSC2098  Grindelia hirsutula H. E. Parks Aug 1941 24190 Humboldt Big Lagoon Comment
  HSC79172  Grindelia hirsutula C. K. Geldin-Meyers 1985-8-3 100 Humboldt Mosley Is., W end of Cannibal Is. Rd., mouth of the Eel River 3 Comment
  JEPS30544  Grindelia hirsutula Peter H. Raven, R. Snow 1958-7-21 13659 Humboldt Cape Mendocino Cape Mendocino (on exposed coastal bluffs) Comment
  UC1223102  Grindelia hirsutula Joseph P. Tracy 1947-11-9 17944 Humboldt s side mouth of Eel River at Camp Weeott; mouth of Eel River 3 Comment
  UC725494  Grindelia hirsutula A. A. Heller 1923-7-7 13764 Humboldt s of Garberville (near the s fork of the Eel River) Comment
  SEINET10958318 Image available Grindelia stricta var. platyphylla J. A. Moore, Julian A. Steyermark 1931-8-9 Moore 3687 Humboldt On sandy seashore at base of cliffs. 10 miles north of Trinidad, Humboldt County. Exposed sandy places along seashore. 1 Comment
  POM187851  Grindelia stricta var. stricta Marcus E. Jones 1931-7-16 29143 Humboldt Arcata. Comment
  POM264515  Grindelia stricta var. stricta H. E. Parks 1941-08 24190 Humboldt Big Lagoon. Comment
  UC1239637  Hackelia bella Joseph P. Tracy 1937-7-29 15587 Humboldt w slope near top at Hyampom Trail; South Fork Mountain 1676 Comment
  JEPS79900  Hackelia micrantha Joseph P. Tracy 1932-7-11 10421 Humboldt Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  SEINET202726 Image available Hainardia cylindrica Joseph P. Tracy 1938-7-15 16071 Humboldt Mouth of Eel River 3 Comment
  CAS-BOT-BC508212  Hastingsia alba Joseph P. Tracy 1926-6-20 7633 Humboldt Wet or seepy ground, serpentine formation, Horse Mountain 1463 Comment
  CAS-BOT-BC302442  Hazardia whitneyi var. discoidea Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  UC205152  Hazardia whitneyi var. discoidea Joseph P. Tracy 1919-9-23 5287 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  JEPS35024  Helenium bigelovii Joseph P. Tracy 1937-8-12 15657 Humboldt Snow Camp 1402 Comment
  SD128471  Helenium bigelovii L. E. Urbatsch, Patricia B. Cox and Alan W. Lievens 1988-8-17 6103 Humboldt Road to Denny from California 299; 1.7 miles to left fork; 6.7 miles to right fork, 7NO4; collection site 6.4 miles. Comment
  CAS-BOT-BC306866  Helenium bolanderi Doris K. Kildale 1929-7-10 8398 Humboldt Big Lagoon Comment
  SEINET11840975  Helenium bolanderi J. P. Tracy 1901-1 1204 Humboldt Humboldt Bay 30 Comment
  UC175986  Helenium bolanderi J. P. Tracy 1912-7-22 3792 Humboldt near Loleta 91 Comment
  RSA255765  Hemitomes congestum Gary D. Wallace, S. Carlquist, G. Ansley Wallace 1972-6-1 1108 Humboldt Prairie Creek Redwoods St. Pk., E. of Park HQ. 73 Comment
  HSC40031  Hemizonella minima Thomas W. Nelson, Jane P. Nelson 1976-6-22 2879 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  POM160904  Hemizonia clevelandii Joseph P. Tracy 1925-7-12 7200 Humboldt Trinity River Valley, near the South Fork. Northern Coast Ranges. 305 Comment
  CAS-BOT-BC306079  Hemizonia congesta subsp. clevelandii W. R. Dudley 1899-6-29 s.n. Humboldt Bank of Eel River Comment
  CAS-BOT-BC309983  Hemizonia congesta subsp. tracyi Richard Spellenberg 1965-6-14 1129 Humboldt Kneeland Prairie, at Kneeland Airport, 6 mi. s.e. of Kneeland Comment
  CAS-BOT-BC310001  Hemizonia congesta subsp. tracyi Alice Eastwood; John Thomas Howell 1937-6-22 4752 Humboldt 11 miles from Blocksburg on road to Bridgeville Comment
  UC495621  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1932-8-21 10364 Humboldt Chaparral Mt., Three Cabins 457 Comment
  HSC56157  Heracleum maximum G. L. Clifton, Terry Griswold 1979-8-1 12022 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  SD53244  Heracleum maximum Darley F. Howe 1962-5-22 3301 A Humboldt 0.5 miles north of Orick on # 101 29 Comment
  UCSB25051  Heracleum maximum Keefe, Joseph 1967-7-8 Humboldt Brushy roadside, junction crannell Road and Little River Drive, north of Eureka 6 Comment
  UC275454  Hesperevax acaulis var. robustior Joseph P. Tracy 1925-5-17 6982 Humboldt near s fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  SEINET10460656  Heterocodon rariflorum Tracy TRACY 2199 Humboldt EUREKA Comment
  CAS-BOT-BC311076  Heterotheca oregona var. rudis Alice Eastwood 1921-7-21 10667 a Humboldt Van Duzen River Comment
  UC202750  Heterotheca oregona var. rudis Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  UC581757  Heterotheca oregona var. rudis Joseph P. Tracy 1933-10-15 13097 1/2 Humboldt Miranda, along South Fork of Eel River South Fork of Eel River 121 Comment
  HSC64875  Heuchera micrantha J. P. Smith 1973-5-26 6825 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC1222390  Heuchera micrantha Joseph P. Tracy 1950-6-8 18716 Humboldt 2 mi s Ferndale (Wild Cat Road, at the Sand Cut) 304 Comment
  CAS-BOT-BC420405  Heuchera micrantha var. diversifolia Harley P. Chandler 1901-5-1 1231 Humboldt Redwood Belt 457 Comment
  JEPS49746  Heuchera micrantha var. diversifolia Harley P. Chandler May 1901 1231 Humboldt North Coast Ranges 457 Comment
  UC1222387  Heuchera micrantha var. macropetala Joseph P. Tracy 1950-7-2 18976 Humboldt at crossing of Little Hors Linto Creek (below Grizzly Camp); Trinity Summit Comment
  CAS-BOT-BC312398  Hieracium albiflorum Carl D. Duncan 1920-9-28 s.n. Humboldt Hoopa Comment
  HSC81930  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1979-7-3 4947 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  BLMAR738  Hieracium albiflorum Jennifer Wheeler 2015-5-12 738 Humboldt King range, Along Telegraph Ridge btwn Oat and Spanish 670 Comment
  CAS-BOT-BC312389  Hieracium albiflorum Doris K. Kildale 1925-7-5 1022 Humboldt Willow Creek Flat, Trinity River Valley 152 Comment
  HSC74490  Hieracium greenei M. A. Baker 1980-7-24 3209 Humboldt Near Orleans Mtn. 1625 Comment
  CAS-BOT-BC316004  Hieracium nudicaule Joseph P. Tracy 1932-7-17 10659 Humboldt Corral Prairie, Trinity Summit 1584 Comment
  HSC13454  Hippuris vulgaris D. E. Anderson 1965-10-25 4161 Humboldt Georgia-Pacific Co., N Big Lagoon Comment
  UC183602  Hippuris vulgaris Joseph P. Tracy 1912-7-7 3737 Humboldt ditch at Bucksport (Humboldt Bay Region); Northern Coast Region, , Bucksport 0 Comment
  BLMAR44  Holcus lanatus Brad Barr June, 1982 44 Humboldt King range, lake ridge near pond Comment
  HSC33769  Holcus lanatus Lon Hall 1975-5-24 378 Humboldt Samoa Dunes, off Samoa Blvd., across from the boat landing Comment
  HSC71723  Holcus lanatus M. A. Baker 1980-6-26 2464 Humboldt Near Sims Creek 610 Comment
  POM352400  Holcus lanatus Thekla Mohr 1918-07 3344 Humboldt Eel River. Comment
  UC34072  Holcus lanatus J. P. Tracy 1901-7-24 1218 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  BLMAR753  Holodiscus discolor Jennifer Wheeler 2015-8-6 753 Humboldt King range, Strawberry Rock 189 Comment
  HSC41306  Holodiscus discolor Brad Klipfel 1974-7-23 469 Humboldt Horse Mtn., on the NE side of the ridge. Comment
  HSC72986  Holodiscus discolor M. A. Baker 1980-7-15 2947 Humboldt Near Whiting Ridge 301 Comment
  UC1198705  Holodiscus discolor Joseph P. Tracy 1912-7-31 3932 Humboldt Northern Coast Ranges, Buck Mountain near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  UC175631  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1912-7-31 3909 Humboldt nw slope Buck Mountain (Burr Valley); Northern Coast Ranges, nw slope Buck Mountain, Burr Valley 1066 Comment
  UC526707  Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt mouth Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay region, Elk River 3 Comment
  HSC10176  Hordeum marinum subsp. gussoneanum J. A. Waller 1965-4-19 15 Humboldt Kneeland area. Comment
  HSC10231  Hordeum vulgare S. J. Hawks 1965-4-6 23 Humboldt Along Clam Beach access road. Comment
  HSC45256  Hordeum vulgare M. Alcasas 1978-5-27 109 Humboldt On access road to Eel River Sawmills, 0.5 mi. from Hwy. 101 30 Comment
  UC183616  Horkelia californica Joseph P. Tracy 1912-7-22 3791 Humboldt Northern Coast Ranges, Table Bluff 91 Comment
  SEINET10841409  Horkelia californica Lincoln Constance, Alan A. Beetle; Joseph P. Tracy 1940-5-17 Constance 2613 Humboldt Branches reddish, ascending, petals white. With amelanchier and prunus, Serpentine? Soil of openings in cutover pinus ponderosa, pseudotsuga, quercus Garryana forest. Larrabee valley 762 Comment
  SEINET11911570  Horkelia sericata H. P. Chandler 1901-1 1543 Humboldt Klamath River 427 Comment
  UC303162  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1925-5-30 7025 Humboldt Laribee Valley; Northern Coast Ranges 701 Comment
  HSC97584  Horkelia tridentata subsp. flavescens C. Witte 2007-5-18 43 Humboldt Near Bottleneck Spring. 1575 Comment
  HSC44334  Hosackia oblongifolia var. oblongifolia Brad Klipfel 1975-6-17 676 Humboldt Horse Mtn. Comment
  SBBG28785  Hydrophyllum occidentale L. Constance, A. A. Beetle, J. P. Tracy 1940-5-17 2618 Humboldt lower slopes of Buck Mtn near Eureka 792 Comment
  UC1762197  Hydrophyllum tenuipes H. E. Parks and Joseph P. Tracy 1949-6-25 11674 Humboldt Trinity Summit, meadow at Box Camp 1463 Comment
  CAS-BOT-BC400793  Hypericum anagalloides C. L. Hitchcock; J. S. Martin 1939-7-14 5442 Humboldt 7 miles east of Shelter Cove 243 Comment
  CAS-BOT-BC401234  Hypericum perforatum Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  HSC56972  Hypericum perforatum Overton, Butler 1979-7-23 9501 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC1198413  Hypericum perforatum Joseph P. Tracy 1933-6-25 12628 Humboldt along Eel R. 2 to 5 mi. e. of S. Fork (Camp Grant); Eel R., Camp Grant 45 Comment
  UC420732  Hypericum perforatum Joseph Burtt Davy and Walter C. Blasdale 1899-6-20 5715 Humboldt Hoopa Valley North Coast Ranges, Hoopa Valley Comment
  UC166089  Hypochaeris glabra Joseph P. Tracy 1911-5-27 3193 Humboldt Comment
  HSC37940  Hypochaeris radicata Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  RSA12527  Iliamna latibracteata Carl B. Wolf 1934-7-3 5907 Humboldt Redwood Hwy 3 miles north of Orick (Davison s Ranch on Prairie Creek) 61 Comment
  UC668131 Image available Iliamna latibracteata Joseph P. Tracy 1938-8-14 16104 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
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Feb 27 2012
  CHSC68561  Iris douglasiana Vernon H. Oswald 1997-4-29 8355 Humboldt Humboldt Bay NWR, Hookton Slough Trail on the levee along the south side of Hookton Slough. 0 Comment
  HSC47580  Iris douglasiana Sheila Logan 1978-4-10 176 Humboldt Redwood Park behind HSU campus Comment
  HSC13852  Iris douglasiana W. R. Rogers 1966-5-9 305 Humboldt 3 mi. SE of Arcata, Fickle Hill Comment
  HSC13863  Iris douglasiana W. R. Brigham 1962-5-20 19 Humboldt End of old Hwy. 101, N of Big Lagoon Rd. Comment
  RSA24204  Iris macrosiphon Carl B. Wolf 1941-3-3 9993 Humboldt N. Coast Range, 1/2 miles N of Ettersburg on road to Honeydew. 305 Comment
  UC667117  Iris macrosiphon Joseph P. Tracy 1927-6-12 8138 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  HSC36790  Iris purdyi Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-7-20 2052 Humboldt Beside FS Rd. 2S08 to Pine Mtn. Comment
  RSA135939  Iris purdyi Lee W. Lenz, E. K. Balls 1951-5-9 16513 Humboldt 5 miles south of Richardsons Grove, Highway 101 Comment
  UC1222674  Iris purdyi Joseph P. Tracy 1950-7-1 18950 Humboldt Friday Ridge, at Friday Camp, Grouse Mountain Friday Ridge; North Coast Ranges, Grouse Mountain 1219 Comment
  CHSC32902  Iris tenax subsp. klamathensis T. Jimerson; J. Pageau 1979-5-9 450 A Humboldt In old clear cut on Forest Road 12N20, 1.5 mi. west of its junction with F. R. 15N01 ( G. O. Road). Orleans. Just west of serpentine balds. 792 Comment
  HSC45313  Iris tenax subsp. klamathensis R. York 1978-5-11 163 Humboldt Along logging road off Bark Shanty Rd. above Orleans 610 Comment
  HSC13902  Iris tenuissima E. Andreuccetti 1964-5-2 37 Humboldt 50 yds. from Ruby Creek on Hwy. 299 Comment
  HSC31445  Iris tenuissima D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5565 Humboldt Lower slopes of Black Lassic near Trinity Co. line 1585 Comment
  HSC6800  Isatis tinctoria D. E. Anderson 1965-5-1 3569 Humboldt Slides along Hwy. 96 and Klamath River, 3-4 mi. E of Weitchpec Comment
  JEPS79909  Isatis tinctoria Joseph P. Tracy 1939-4-29 16239 Humboldt Klamath River at mouth of Slate Creek; Klamath River, Slate Creek 121 Comment
  CAS-BOT-BC88654  Isatis tinctoria J. H. Thomas 1949-6-12 900 Humboldt Near Klamath River, about 0.5 mile north of town of Orleans. Comment
  CAS-BOT-BC112454  Isolepis cernua R. Becking 1985-5-5 s.n. Humboldt North Spit; US Coast Guard Dunes. 500-700 ft NE from light beacon at base of North Jetty. Comment
  JEPS63980  Isolepis setacea Joseph P. Tracy 1917-6-17 4817 Humboldt Salmon Creek Valley Northern Coast Ranges, Humboldt Bay, Salmon Creek Valley (around Humboldt Bay) 30 Comment
  UCR48590  Jaumea carnosa R. D. Goeden, Don W. Ricker 1987-9-2 870902- 18 Humboldt North Coast, Loleta, at bay on Cannibal Road 3 Comment
  RSA54123  Juncus articulatus Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek. Klamath River Canyon. Comment
  CHSC105448  Juncus balticus subsp. ater Peter F. Zika 2008-11-3 24274 Humboldt North Coast. Mouth of Elk River NE of Route 101 bridge, 2 air km S of Eureka. 2 Comment
  POM126145  Juncus bolanderi Joseph P. Tracy 1924-7-13 6730 Humboldt Big Lagoon. 6 Comment
  UC183780  Juncus bolanderi Joseph P. Tracy 1912-7-26 3826 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC36046  Juncus bolanderi Thomas W. Nelson 1975-9-24 2201 Humboldt Beside Indianola Rd., 0.5 mi. E of junction with Hwy. 101 Comment
  BLMAR417  Juncus breweri Jennifer Wheeler 2007-8-29 417 Humboldt South Spit, growing on east side near bay 9 Comment
  UC1152113  Juncus capitatus Joseph P. Tracy 1948-6-13 18045 Humboldt at the former Will Perry Place Dobbyn Creek 152 Comment
  RSA53821  Juncus ensifolius Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek. Klamath River Canyon. Comment
  JEPS63846  Juncus hesperius W. L. Jepson 1936-8-17 19709 Humboldt 2 mi s Field's Landing (near Still's ranch) Comment
  HSC62860  Juncus hesperius J. M. DiTomaso 1979-5-16 1015 Humboldt Corner of LK Wood and 14th St., Arcata Comment
  SEINET11789588  Juncus hesperius J. P. Tracy 1938-1 15938 Humboldt vicinity of Carlotta, 2 mi E of town 30 Comment
  HSC14029  Juncus lescurii C. B. Wolf 1927-8-29 1205 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  HSC57634  Juncus parryi G. L. Clifton, Griswold 1979-7-25 10791 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC58005  Juncus parryi G. L. Clifton, Griswold 1979-7-31 11791 Humboldt Near the Trinity Summit Guard Station, close to the town of Hoopa. 1804 Comment
  RSA168869  Juncus phaeocephalus var. phaeocephalus Joseph P. Tracy 1934-7-13 13391 Humboldt Dow s Prairie. 61 Comment
  UC314634  Kalmia polifolia subsp. microphylla Joseph P. Tracy 1925-7-5 7177 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC74667  Keckiella corymbosa Gail Newton 1981-8-7 2429 Humboldt Near Bug Creek Butte 1244 Comment
  HSC74728  Keckiella corymbosa Gail Newton 1981-7-22 2263 Humboldt Near Bug Creek 1375 Comment
  RSA79855  Keckiella corymbosa F. W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec. Comment
  UC213499  Keckiella lemmonii Joseph P. Tracy 1920-8-15 5352 Humboldt mouth of Slate Creek (Klamath River); Northern Coast Ranges 152 Comment
  UC35327  Kelloggia galioides Chesnut and Drew 1888-7-23 Humboldt Hyampon Comment
  CDA2756  Kniphofia uvaria Gordon Leppig, Sylvia Leppig 2000-4-9 1287 Humboldt Arcata Marsh and Wildlife Refuge. Southeast corner of Klopp Lake dike, Arcata. Comment
  RSA167285  Koeleria macrantha Joseph P. Tracy 1951-6-24 19541 Humboldt Kneeland Prairie; rockpile and Ashfield Butte 762 Comment
  CAS-BOT-BC340318  Kyhosia bolanderi Doris K. Kildale 1925-8-16 1180 Humboldt Trinity Summit. Elk Horn Prairie 1524 Comment
  UC127613  Lagophylla ramosissima Harley P. Chandler 1901-6-1 1467 Humboldt Klamath River North Coast Ranges, Klamath River 304 Comment
  CDA5667  Lamiastrum galeobdolon Gordon Leppig, K. Neander 2000-4-13 1292 Humboldt Arcata Community Forest, 100 meters south of trail 5 & 10 intersection, Arcata. Comment
  HSC77913  Landoltia punctata Daniel V. Richards 1980-5-25 101 Humboldt N Clam Beach Pond, E side of Hwy. 101, near Cranell exit. Comment
  UC302193  Lapsana communis Joseph P. Tracy 1926-6-6 7553 Humboldt Bair's on Redwood Creek Northern Coast Ranges, Redwood Creek 304 Comment
  CAS-BOT-BC337990  Lasthenia californica Carl B. Wolf 1937-6-14 8812 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  UC129576  Lasthenia californica subsp. californica Harley P. Chandler May 1901 1260 Humboldt Redwood belt; Coast Ranges 152 Comment
  UC582761  Lasthenia californica subsp. californica Joseph P. Tracy 1932-6-26 10265 A Humboldt valley South Yager Creek 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
  CAS-BOT-BC352931  Lasthenia glaberrima Joseph P. Tracy 1908-6-7 2619 Humboldt Butler Valley 152 Comment
  HSC87151  Lathyrus biflorus Thomas W. Nelson, James Nelson 1980-6-10 5432 Humboldt NE slope of Red Mtn. 1372 Comment
  HSC100518  Lathyrus californicus Carl C. Marshall Jul 1887 460 Humboldt Harris. Comment
  CAS-BOT-BC204952  Lathyrus japonicus Doris K. Kildale 1925-7-15 1086 Humboldt Eureka Slough Comment
  JEPS64857  Lathyrus lanszwertii var. lanszwertii Mrs. M. H. Manning Apr 1902 Humboldt near Hupa Comment
  JEPS55323  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1926-5-2 7432 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC494166  Lathyrus littoralis H. E. Parks 1930-5-24 798 Humboldt Little River Lagoon Comment
  UCD106376  Lathyrus littoralis Linda M. Barker 1976-5-13 1489 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA183608  Lathyrus littoralis R. I. Bonn 1965-5-7 23 Humboldt Four miles west of Arcata on Lamphere Rd. Comment
  UC709411  Lathyrus torreyi Joseph P. Tracy 1934-7-12 13378 Humboldt Big Lagoon 152 Comment
  HSC14755  Lathyrus vestitus subsp. bolanderi Lincoln Constance 1934-5-31 757 Humboldt South Fork of the Eel River, Bull Creek Flat, along Bull Creek. Comment
  RSA168907  Lathyrus vestitus subsp. bolanderi Joseph P. Tracy 1942-7-26 17298 Humboldt Valley of South Yager Creek. 610 Comment
  HSC5911  Layia carnosa J. W. Johnson 1962-4-18 1272 Humboldt Arcata, between the Mad River mouth and the Hunt Farm, Samoa Peninsula. Comment
  HSC90659  Layia carnosa Gail Newton 1982-5-5 3542 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC30591  Layia carnosa J. P. Tracy 1901-4-17 Humboldt Samoa; Humboldt Bay Comment
  UC672865  Lemna turionifera Joseph P. Tracy 1932-8-21 10370 Humboldt on w slope of Chaparral Mountain, on e side of Mad River, Three Cabins Ranch Mad River; Chaparral Mountain, , Three Cabins Ranch 457 Comment
  CAS-BOT-BC534923  Lemna turionifera L. R. Abrams; R. Bacigalupi 1958-6-17 8271 Humboldt Big Lagoon south of Orick Comment
  HSC12416  Leontodon saxatilis subsp. saxatilis D. Santana Oct 1970 27 Humboldt Road side near Big Lagoon Comment
  UC1116217  Lepidium strictum Joseph P. Tracy 1946-5-4 17433 Humboldt Willow Creek Trinity River Valley 152 Comment
  RSA135478  Leptosiphon androsaceus Volney Rattan 1882-1 s.n. Humboldt N. of Ulad River. Comment
  RSA0096840  Leptosiphon filipes Joseph P. Tracy 1950-5-30 18710 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC176462  Lessingia nemaclada Joseph P. Tracy 1908-6 2889 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC34537  Lessingia nemaclada Hy-Am Pum 1888-7-23 Humboldt Comment
  BLMAR147  Leucanthemum vulgare Donald Hazlett 1994-6-7 147 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC39167  Leucanthemum vulgare D. E. Anderson, J. P. Smith 1971-6-28 - 1236 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UC1488740  Lewisia cotyledon var. cotyledon Marc Baker 1980-7-24 3196 Humboldt near Orleans Moutain; Forks of Salmon Quad., 239 ft.; 41 17' 28 left 123 27' 21 bottom 1524 Comment
  RSA249391  Lewisia nevadensis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5590 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  JEPS5878  Lewisia triphylla Joseph P. Tracy 1935-7-24 14178 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  SEINET197649 Image available Lewisia triphylla Joseph P. Tracy 1935-7-24 14178 Humboldt Trinity summit near Ranger Station 1830 Comment
  JEPS17505  Ligusticum apiifolium W. L. Jepson 1902-6-30 1959 Humboldt on Hupa Rd. near Redwook Creek Comment
  HSC56332  Ligusticum grayi Overton, Butler 1979-8-2 12702 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC672870  Lilaea scilloides Joseph P. Tracy 1933-5-20 12274 Humboldt back of Cape Mendocino (Cape Ridge); Cape Ridge 304 Comment
  HSC21523  Lilaeopsis occidentalis E. Hunt 1949-5-18 21 Humboldt Humboldt Bay Comment
  CAS-BOT-BC130511  Lilium bolanderi Tom Craig 1941-6-20 s.n. Humboldt Joyell Mine, 10 miles east of Green City Comment
  SBBG1025  Lilium columbianum H. and M. Dearing 1939-6-23 3698 Humboldt 5 mi N of Trinidad Comment
  CAS-BOT-BC508397  Lilium columbianum W. R. Dudley 1899-1-1 s.n. Humboldt Big Lagoon, south of Klamath River Comment
  HSC45280  Lilium columbianum Clifton Raymond Chesbrough 1971-7-5 40 Humboldt Along Fickle Hill Rd. Comment
  RSA65318  Lilium columbianum Albert M. Vollmer, L. Beane 1951-07 s.n. Humboldt A few miles north of Arcata near U. S. Highway 101 Comment
  UCD139729  Lilium columbianum H. P. Olmo 1931-6-8 s.n. Humboldt 5 miles north of Trinidad on Redwood Highway. Comment
  RSA34281  Lilium humboldtii subsp. humboldtii J. Wendell Howe 1934-07 s.n. Humboldt Bald Mountain Comment
  CAS-BOT-BC130639  Lilium kelloggii A. M. Vollmer; L. Beane 1953-7-1 119 Humboldt Freshwater Comment
  UC1334273  Lilium kelloggii Albert M. Vollmer and Ira L. Wiggins 1940-7-4 6 Humboldt 15 mi. w. Weitchpec (on burned-over ridge on Orick-Weitchpec rd.) 944 Comment
  UCSB698  Lilium pardalinum Phillips, Priscilla 1958-6-7 Humboldt On Highway 101, 14.1 mi. south of Prairie Creek Redwoods State Park (north of Trinidad) Comment
  HSC57160  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-26 9959 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC75488  Lilium pardalinum subsp. pardalinum J. O. Sawyer 1980-7-18 3627 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC506199  Lilium vollmeri Peter H. Raven; R. Snow 1958-7-20 13641 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge Comment
  JEPS19585  Limnanthes douglasii Joseph P. Tracy 1933-5-20 12246 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC1197415  Limnanthes douglasii Joseph P. Tracy 1927-5-8 7981 Humboldt Phillipsville Northern Coast Ranges (facing South Fork of Eel River) 121 Comment
  CAS-BOT-BC123073  Limnanthes douglasii var. nivea Lincoln Constance; Reed Clark Rollins 1942-5-21 3000 Humboldt 2 miles N of Harris 762 Comment
  HSC90804  Limonium californicum Leonel Arguello 1989-9-9 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  UC665605  Linanthus androsaceus Victor Duran 1933-5-10 3403 Humboldt near Blocksburg Comment
  UC908948  Linanthus androsaceus Joseph P. Tracy 1927-5-8 7975 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  UC1198538  Linanthus harknessii Harold E. Parks and Joseph P. Tracy 1934-6-27 11086 Humboldt Grouse Mt. 1432 Comment
  HSC97247  Linanthus nuttallii subsp. nuttallii Thomas W. Nelson, Dick Brummitt & Barbara Ertter 2004-7-4 9284 Humboldt Trinity River Bar down stream from the mouth of Willow Creek 152 Comment
  UCSB8725  Linaria vulgaris Phillips, Priscilla 1958-6-7 Humboldt Patrick's Point; near Trinidad Comment
  HSC100707  Linnaea borealis Carl C. Marshall Jun 1886 258 Humboldt E of Hoopa. Comment
  HSC3907  Linnaea borealis subsp. longiflora William J. Ferlatte, B. D. Rogers 1966-6-8 2088 Humboldt 2 mi. W of Forest Glen, Granite Canyon. Comment
  RSA0087554  Linnaea borealis subsp. longiflora Joseph P. Tracy 1950-6-21 18857 Humboldt Willow Creek Canyon, along Trinity Highway, east of crossing of Cedar Creek. 762 Comment
  UC1239560  Linnaea borealis var. longiflora Joseph P. Tracy 1936-6-28 15018 Humboldt Bald Mountain at Lake Prairie; Bald Mountain at Lake Prairie 1066 Comment
  RSA435732  Linum angustifolium J. P. Smith 1973-5-26 6828 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC46152  Linum bienne J. P. Smith 1973-5-26 6828 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  JEPS19995  Lipocarpha aristulata Joseph P. Tracy 1931-9-7 9650 B Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  POM301291  Listera caurina H. E. Parks, Joseph P. Tracy 1949-6-25 11667 Humboldt Trinity Summit, near Box Camp 1524 Comment
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Jul 13 2018
  RSA273403  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson, Jane Nelson 1976-2-21 2247 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. west of Hoopa. Comment
  RSA697655  Lithocarpus densiflorus var. densiflorus Unspecified 1936-09 s.n. Humboldt Richardson's Grove (State Park). Comment
  SFV7744  Lithocarpus densiflorus var. densiflorus T. Gordon, K. Kimbrough 1975-8-22 1226 Humboldt Humboldt Redwoods State Park. 61 Comment
  CAS-BOT-BC36581  Lithocarpus densiflorus var. echinoides Doris Kildale Gillespie 1931-6-7 10604 Humboldt South Fork Mt., Brush lookout 1726 Comment
  RSA152286  Lithocarpus densiflorus var. echinoides Joseph P. Tracy 1948-8-15 18136 Humboldt Trinity Summit. On ridge 2 miles east of Grove's Prairie. 1524 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
  CAS-BOT-BC435647  Lithophragma heterophyllum Joseph P. Tracy 1932-4-24 9827 Humboldt South fork of Eel River, between Miranda and Redway 91 Comment
  HSC97506  Lithophragma parviflorum var. parviflorum C. Witte 2007-5-22 80 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  UC180204  Logfia gallica Joseph P. Tracy 1914-5-30 4488 Humboldt near Hydesville; Northern Coast Region of California Comment
  UC582504  Logfia gallica Joseph P. Tracy 1935-5-30 13914 Humboldt Willow Creek, Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC283403  Lolium multiflorum C. L. Hitchcock; C. V. Muhlick 1963-7-14 22906 Humboldt Along Eel River at Fern Bridge Comment
  SEINET200586 Image available Lolium perenne J. P. Tracy 1937-6-6 15331 Humboldt Ferndale 15 Comment
  HSC96251  Lomatium californicum Kaylea Eickhoff, Cara M. Witte 2005-6-24 16 Humboldt ~13 mi S of Hwy 299 on NF1 1375 Comment
  HSC96281  Lomatium californicum Wanda Naylor, Laurel Goldsmith 2005-6-24 14 Humboldt S of Grouse Mountain on NF1 1595 Comment
  HSC71827  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5939 Humboldt Along old trail to pond above Alder Spring, 0.5 mi. N of campground 1555 Comment
  UC314597  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1923-6-27 6380 Humboldt near the South Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  UC1222609  Lomatium dissectum Joseph P. Tracy 1950-6-15 18805 Humboldt 7 mi N of Harris (Jenk's Ranch) Comment
  HSC32939  Lomatium dissectum var. dissectum Thomas W. Nelson, James Nelson 1973-5-28 953 Humboldt McKeown Ranch N of Dinsmore Comment
  RSA0000726  Lomatium donnellii W. L. Jepson 1934-5-8 16716 Humboldt Redway, South Fork Eel River. Comment
  HSC70701  Lomatium macrocarpum Gail Newton 1980-7-15 1551 Humboldt Near Sims Mtn. 1311 Comment
  UC1167734  Lomatium macrocarpum Peter Raven with R. Snow 1958-7-20 13637 Humboldt 2.0 mi. s. junction of Titlow Hill and Friday Ridge rds. (near Grouse Mt.) Comment
  CDA38337  Lomatium nudicaule Kaylea Eickhoff, Cara M. Witte 2005-6-3 1 Humboldt White Oak Opening, 19.3 miles south of Hwy. 299 on NF1. Comment
  HSC46922  Lomatium tracyi Brad Klipfel 1974-5-27 439 Humboldt Horse Mtn. Comment
  JEPS15822  Lomatium tracyi Joseph P. Tracy 1926-6-20 7610 Humboldt Northern Coast Ranges, Horse Mt. 1524 Comment
  HSC48474  Lomatium triternatum J. P. Smith, J. O. Sawyer, J. Cole 1978-5-21 9933 Humboldt Six Rivers Natl. Forest, along Ishi Pishi Rd., 1.5 mi. from the Ishi Pishi Bridge over the Klamath River 305 Comment
  UC906647  Lomatium triternatum var. triternatum Joseph P. Tracy 1947-7-5 17778 Humboldt ridge top 1 mi. w. Mud Springs (Trinity Summit); Trinity Summit 1158 Comment
  JEPS17553  Lomatium utriculatum Joseph P. Tracy 1923-7-4 6525 Humboldt Northern Coast Ranges, South Yager Creek Valley 762 Comment
  JEPS2711 Image available Lomatium utriculatum W. L. Jepson 1934-5-8 16716 Humboldt Redway South Fork Eel River; Redway, S fork of Eel River Comment
  UC1186378  Lomatium utriculatum R. Ornduff 1960-6-1 6182 Humboldt ca. 6 mi. e. Garberville (on rd. to Alder Point) Comment
  UC1714579  Lomatium utriculatum J. P. Tracy 1904-5 2116 Humboldt immediate vicinity Eureka (restricted to small patch on bluff at Bucksport); Bucksport 0 Comment
  CAS-BOT-BC241402  Lonicera David D. Keck 1948-7-1 5975 Humboldt South side of Big Lagoon Comment
  UC1239545  Lonicera ciliosa Joseph P. Tracy 1936-8-7 15115 1/2 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC3946  Lonicera conjugialis J. P. Tracy 1932-7-11 10414 Humboldt Trinity Summit 1524 Comment
  HSC99456  Lonicera conjugialis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 108 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
  RSA455188  Lonicera hispidula var. vacillans Thekla Mohr 1918-07 3351 Humboldt Eel River. Comment
  HSC100411  Lonicera involucrata Carl C. Marshall Jun 1886 234 Humboldt Vicinity of Humboldt Bay. Comment
  UCSB10475  Lonicera involucrata Phillips, Priscilla 1958-6-10 Humboldt 0.8 mi. south of intersection of Highway 101 and old highway parallel to it, which runs between Trinidad and Colonial Inn, on the old road Comment
  UCSB22320  Lonicera involucrata Keefe, Joseph 1967-7-8 Humboldt Junction Crannell Road and Little River Drive, north of Eureka 6 Comment
  CAS-BOT-BC241494  Lonicera involucrata var. ledebourii Carl B. Wolf 1927-8-22 770 Humboldt Big Lagoon Comment
  HSC31654  Lonicera involucrata var. ledebourii Timothy B. Devine 1974-5-4 326 Humboldt Mad River floodplain 1 mi. from Blue Lake on Hatchery Rd. 305 Comment
  HSC3922  Lonicera involucrata var. ledebourii C. B. Wolf 1927-8-29 1204 Humboldt Near mouth of Bear River, Capetown. Comment
  HSC3928  Lonicera involucrata var. ledebourii D. B. Bader 1963-3-1 25 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101 Comment
  HSC69640  Lonicera involucrata var. ledebourii R. Kalal 1980-5-18 19 Humboldt Entrance to Dry Lagoon State Park, along abandoned Rd. 21 Comment
  SEINET3523667 Image available Lotus A. A. Heller 1923-7-9 13778 Humboldt Near Blue Lake, 5 mi from Arcata Comment
  UC162847  Lotus aboriginus J. P. Tracy 1901-5-12 1078 Humboldt immediate vicinity Eureka 0 Comment
  HSC99573  Lotus crassifolius K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 238 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
  UC1223400  Lotus formosissimus Joseph P. Tracy 1938-6-17 15949 Humboldt s of Cape Mendocino point; Cape Mendocino 3 Comment
  HSC97498  Lotus micranthus Cara Witte 2007-5-21 60 Humboldt White Oak Opening. 1257 Comment
  SEINET3694253 Image available Lotus purshianus Joseph P. Tracy 1937-8-12 15628 Humboldt Bald Mountain: Border of Lake Prairie Bog, 3 miles S of Murphy Meadows 1067 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
  HSC97236  Lotus purshianus var. purshianus Thomas W. Nelson, Dick Brummitt & Barbara Ertter 2004-7-4 9281 Humboldt Trinity River bar down stream from mouth of Willow Creek 152 Comment
  POM232036  Lotus unifoliolatus I. L. Wiggins 1930-7-22 4689 Humboldt Along bank of Redwood Creek btwn Blue Lake and Willow Creek. Comment
  HSC38527  Lotus unifoliolatus var. unifoliolatus D. E. Anderson, J. P. Smith 1971-6-18 - 1069 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC95074  Lotus unifoliolatus var. unifoliolatus Andrea Pickart 2002-7-2 157 Humboldt Humboldt Bay Dunes, Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 24 Comment
  UC495723  Lotus wrangelianus Joseph P. Tracy 1932-5-1 9886 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  UC1197306  Lotus wrangelianus Joseph P. Tracy 1931-6-14 9578 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  UC1196932  Ludwigia palustris Joseph P. Tracy 1948-7-26 18076 Humboldt mouth of Willow Creek Lack Pond; Northern Coast Ranges, Trinity R. Valley, Lack Pond 152 Comment
  RSA89561  Lupinus Philip A. Munz 1954-7-23 19861 Humboldt Road from Dinsmore to Mad River, near Humboldt-Trinity county line. 762 Comment
  UC503012  Lupinus adsurgens Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt near Blake lookout, South Fork Mountain along summit; Northern Coast Ranges, South Fork Mountain 1737 Comment
  SEINET12154352  Lupinus adsurgens J. P. Tracy 1946-1 17567 Humboldt at Ski Lodge, Horse Mtn 1219 Comment
  UC176296  Lupinus albifrons Joseph P. Tracy 1913-6-14 4133 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC97489  Lupinus albifrons var. collinus Cara Witte 2007-5-29 136 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile south of cattle guard. 1369 Comment
  UC503006  Lupinus arboreus Joseph P. Tracy 1932-5-16 10104 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region, on Humboldt Bay 6 Comment
  OBI19297  Lupinus arboreus P. C. Everett & E. Norland, E. Norland 1941-1-23 9854 Humboldt Flat in nursery. In sand & leafmold Comment
  RSA407035  Lupinus arboreus var. arboreus M. B. Dunkle 1936-8-18 4820 Humboldt Moonstone Beach. Comment
  SEINET1906216  Lupinus bicolor Barbara Ertter, Thomas J. Delendick 1987-1 6924 Humboldt Vista Point just W of Berry Summit on Hwy 299, ca 15 airmiles E of Arcata; 914 Comment
  SEINET10737707 Image available Lupinus constancei Thomas W. Nelson, Jane P. Nelson 1982-7-9 Nelson 7079 Humboldt Blocksburg Quadrangle. T1S, R5E, Sec. 36. Serpentine barrens on Mt. Lassic (Signal Peak) and saddle to east. 1768 Comment
  HSC61195  Lupinus latifolius Jimerson, J. Pageau 1979-5-24 475 Humboldt Near Orleans 226 Comment
  SEINET12154562  Lupinus latifolius J. P. Tracy 1939-1 16415 Humboldt Grouse Mtn, "Clear Lake" 1524 Comment
  UC1223265  Lupinus latifolius var. latifolius Joseph P. Tracy 1939-7-9 16339 Humboldt Snow Camp Comment
  UC503000  Lupinus latifolius var. latifolius Joseph P. Tracy 1932-7-12 10435 Humboldt open ground at Corral Prairie (Trinity Summit); Klamath Mountains, , Corral Prairie 1524 Comment
  UC1223291  Lupinus latifolius var. latifolius Joseph P. Tracy 1941-6-15 16916 Humboldt on the Bull Creek - Mattole Road Panther Gap (Panther Gap) Comment
  UC161545  Lupinus latifolius var. latifolius Joseph P. Tracy 1911-7-7 3417 Humboldt Viz. Ridge n of Willow Creek Brannan Mountain (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mt, btw Willow and Campbell C 1219 Comment
  UC502999  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1932-7-14 10558 Humboldt wet meadow at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  SEINET200687  Lupinus propinquus J. P. Tracy 1901-6-16 1141 Humboldt Bluff at Bucksport, immediate vicinity of Eureka. 152 Comment
  HSC59681  Lupinus rivularis George Kirn 1977-10-12 Humboldt South shore Little River, 1/2 mile from mouth 8 Comment
  UCD170581  Lupinus rivularis Gordon Leppig 1998-4-7 731 Humboldt Rt. 299. 396 Comment
  HSC102922  Luzula M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1001 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC23088  Luzula comosa D. E. Anderson 1965-5-1 3565 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  HSC98641  Luzula comosa Cara Witte 2007-6-1 176 Humboldt Along Forest Service 5N10. 1.75 miles east of intersection with National Forest 1. 1365 Comment
  SEINET11790125  Luzula comosa J. P. Tracy 1951-1 19546 Humboldt Snow Camp Meadow Comment
  CAS-BOT-BC436737  Luzula comosa var. laxa R. K. Gierisch; D. H. Esplin 1969-7-1 3539 Humboldt Six Rivers area: Grouse Mt. 1584 Comment
  UC249818  Luzula macrantha Joseph P. Tracy 1924-3-30 6630 Humboldt Northern Coast Ranges. Near Bridgeville 182 Comment
  HSC58033  Luzula parviflora G. L. Clifton 1979-7-31 11867 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC302166  Luzula parviflora Joseph P. Tracy 1925-7-5 7171 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC61935  Lycopodium clavatum Doris K. Kildale 1929-2-4 6883 Humboldt Trinidad Comment
  JEPS60165  Lycopodium clavatum Hilda W. Grinnell 1932-7-23 46 Humboldt on ever-shaded oozy slope below McKay Camp; South Fork Mountain Comment
  JEPS86070  Lycopodium clavatum Wayne Roderick 1966-8-8 Humboldt Georgia-Pacific property near Big Lagoon Comment
  LA205867  Lycopodium clavatum Lawrence L. Kiefer; D. Branscomb 1964-5-20 1435 Humboldt near Trinidad, 1 mi E of Moonstone Beach on Kuntz property 152 Comment
  JEPS432  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt 2 mi. s. Field's Landing (near Still's ranch) Comment
  CAS-BOT-BC334475  Madia Robert F. Thorne; P. Everett 1965-8-7 35216 b Humboldt Samoa Peninsula, elev near sea level. 0 Comment
  POM284990  Madia citriodora Lyman Benson 1929-7-11 1784 Humboldt Humboldt County: S of Garberville Comment
  CAS-BOT-BC342803  Madia elegans Henry M. Pollard 1947-8-21 s.n. Humboldt Ferrian Ranch, nr. Orleans Comment
  UC129391  Madia exigua Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5466 Humboldt near Elk Prairie Comment
  HSC35783  Madia gracilis Thomas W. Nelson, B. Reinhardt 1975-7-30 2090 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  HSC71169  Madia gracilis Thomas W. Nelson 1977-5-30 3415 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  JEPS40388  Madia gracilis W. L. Jepson 1932-7-26 16405 Humboldt Bull Creek 106 Comment
  CAS-BOT-BC343023  Madia gracilis J. Clausen 1932-9-19 692 Humboldt Weott Comment
  UC582409  Madia gracilis Joseph P. Tracy 1937-7-29 15596 Humboldt w slope near top at Hyampom; South Fork Mountain 1676 Comment
  RSA47169  Madia sativa Doris K. Kildale 1927-6-25 s.n. Humboldt Shelter Cove. Comment
  CAS-BOT-BC343588  Madia sativa Joseph P. Tracy 1927-6-18 8176 Humboldt Northern Coast Ranges. Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape 30 Comment
  RSA1369  Mahonia nervosa E. R. Johnson 1929-08 618 Humboldt 7 miles east of Arcata on the road to Willow Creek. 76 Comment
  CHSC32860  Maianthemum dilatatum Lora L. Anderson 1981-4-26 1 Humboldt Ca. 5 m n on Clam Beach Rd, 0.5 km e of Hwy 101, 9.5 mi n of Arcata. 0 Comment
  POM224223  Maianthemum dilatatum H. E. Parks 1932-05 4289 Humboldt Bishop Pine Lodge, Trinidad. Comment
  UC1134630  Maianthemum dilatatum H. S. Yates 1936-6-23 5864 Humboldt 1 mi. s. Loleta; Rohnerville Quad. Comment
  CAS-BOT-BC508504  Maianthemum dilatatum Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CAS-BOT-BC508519  Maianthemum dilatatum Alice Eastwood 1907-4-21 35 Humboldt Port Trinidad Comment
  SEINET12044316  Maianthemum dilatatum H. E. Parks 1932-1 4289 Humboldt Bishop Pine Lodge, Trinidad Comment
  HSC45493  Maianthemum racemosum subsp. amplexicaule Maralyn O'Meara 1972-6-8 105 Humboldt Along Bald Hills Rd., 18 mi. from junction with Hwy. 101 Comment
  RSA21602  Maianthemum racemosum subsp. amplexicaule Carl B. Wolf 1937-9-14 9349 Humboldt North Coast Range, Lord Ellis Road, 0.5 mile east of summit of Willow Creek Grade 762 Comment
  RSA377681  Maianthemum racemosum subsp. amplexicaule W. Hutchinson s.n. Humboldt [no locality specified] Comment
  HSC57027  Maianthemum stellatum Overton, Butler 1979-7-24 9648 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC15889  Maianthemum stellatum Gerald T. Rood 1962-5-11 4 Humboldt Kneeland Rd., 0.25 mi. E of Barry Rd. Comment
  UCD134381  Malacothrix D. C. Hagar 1956-8-17 89 Humboldt Three Creek's Burn, ca. 6 miles west of Willow Creek. 609 Comment
  UC1223205  Malacothrix floccifera Joseph P. Tracy 1950-6-15 18784 Humboldt 7 mi n Harris (Jenk's Ranch) Comment
  UC34160  Malacothrix floccifera Hy-Am Pum 1888-7-23 Humboldt Comment
  HSC18699  Malus fusca J. W. Bosworth 1965-5-7 41 Humboldt 1/2 mi. S of Samoa Comment
  UC902195  Malva nicaeensis Joseph P. Tracy 1946-11-10 17662 Humboldt Trinidad 3 Comment
  UC275344  Malva parviflora Joseph P. Tracy 1924-10-19 6928 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC37571  Marah oregana J. D. Ackerman 1975-6-10 451 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  HSC47495  Marah oregana Sheila Logan 1978-4-9 19 Humboldt Fieldbrook, 0.5 mi. E of McKinleyville on Murray Rd. 122 Comment
  HSC59579  Marah oregana Rick Lundquist 1979-5-23 103 Humboldt 3.4 mi. up Fickle Hill Rd. from 11th St. 274 Comment
  UC249510  Marah oregana Joseph P. Tracy 1922-4-30 6035 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC95547  Marah oregana Andrea Pickart 2002-5-26 112 Humboldt Lanphere Dunes, along dirt road to Lanphere Dune Office 0 Comment
  UC1198477  Marah oregana Joseph P. Tracy 1940-5-17 16548 Humboldt McClellan Mt. 762 Comment
  UC162807  Medicago arabica J. P. Tracy 1907-5-10 2560 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC31809  Medicago lupulina Donald Spalinger 1974-4-25 23 Humboldt Forest across from 1756 Ridgewood Dr. 122 Comment
  UC1197432  Medicago lupulina Joseph P. Tracy 1915-7-25 4662 Humboldt Eureka Northern Coast Region 0 Comment
  UCD107771  Medicago lupulina W. Williams 1951-1 s.n. Humboldt location unknown. Comment
  SEINET202035  Melica aristata Joseph P. Tracy 1948-8-10 18157 Humboldt Trinity summit. On ridge 2 mi. east of Grove's Prairie. Comment
  UC180493  Melica californica Joseph P. Tracy 1913-6-18 4195 Humboldt opposite Buck Mountain (Dinsmore's Ranch, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC40310  Melica fugax Thomas W. Nelson, Jane P. Nelson 1976-6-22 2859 Humboldt Bog along road to Goat Hill. 1646 Comment
  HSC10347  Melica geyeri A. H. Murphy 1951-4-18 21 Humboldt Ft. Seward next to railroad right of way. 183 Comment
  HSC98743  Melica geyeri Cara Witte 2007-7-20 561 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  HSC102229  Melica geyeri var. geyeri M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1150 Humboldt Patterson Meadows 1566 Comment
  CAS-BOT-BC281321  Melica harfordii David D. Keck 1948-7-2 6005 Humboldt E side Rocky Ridge, E of Berry's summit, 4.1 miles W of Willow Creek, near boundary of Six Rivers National Forest 457 Comment
  CAS-BOT-BC262471  Melica subulata Joseph P. Tracy 1933-7-26 12910 Humboldt North Coast Ranges. Grouse Mountain 1524 Comment
  HSC10369  Melica subulata J. P. Tracy 1926-5-22 7503 Humboldt Prairie Creek. 152 Comment
  HSC97958  Melica subulata Cara Witte, Michael Scott 2007-6-22 340 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1/5 mile after intersection with 4N38. 1486 Comment
  UC1145128  Melica subulata Joseph P. Tracy 1942-6-2 17107 Humboldt Valley of South Yager Creek 762 Comment
  UC673064  Melilotus albus Joseph P. Tracy 1938-7-15 16081 Humboldt Van Duzen Eel River (gravel bar at mouth) 15 Comment
  POM283187  Melissa officinalis Lyman Benson 1929-7-16 91 Humboldt Weott Ranger Station. Comment
  HSC90755  Mentha pulegium Gail Newton 1983-8-21 3856 Humboldt Elk River Wildlife Area, Eureka. Comment
  POM202654  Micropus californicus M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles N of Garberville Comment
  CHSC35518  Micropus californicus var. californicus Thomas Nelson; James Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC98317  Micropus californicus var. californicus H. E. Parks 1930-5-25 872 Humboldt Laribee Valley 762 Comment
  CAS-BOT-BC348709  Microseris bigelovii Dr. A. Kellogg; W. G. W. Harford 1868-1-1 579 Humboldt Buck Mt. Lower N.W. slopes 792 Comment
  CAS-BOT-BC322680  Microseris laciniata Volney Rattan 1879-6-1 s.n. Humboldt Unspecified Comment
  UC582737  Microseris laciniata subsp. laciniata Joseph P. Tracy 1936-6-17 14942 Humboldt Bridgeville 198 Comment
  UC1223193  Microseris laciniata subsp. leptosepala Joseph P. Tracy 1947-7-9 17828 Humboldt Horse Mountains, lower slopes. 1127 Comment
  UC175482  Mimulus arvensis Joseph P. Tracy 1912-7-31 3903 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Burr Valley 1066 Comment
  UC1063411  Mimulus aurantiacus var. aurantiacus H. L. Person 1932-7-23 Humboldt road e Korbel; Eureka Quadrangle Comment
  UC147910  Mimulus breweri Joseph P. Tracy 1908-6 2844 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  HSC20721  Mimulus guttatus J. F. Knezevich 1968-5-14 432 Humboldt 13 mi. S of Ferndale at Cape Mendocino 0 Comment
  HSC59136  Mimulus guttatus Terry Roth 1979-5-20 61 Humboldt Along old logging road that follows Jolly Giant Creek. 79 Comment
  HSC76258  Mimulus guttatus Teresa Prendusi 1981-7-24 489 Humboldt Near Whiteys Peak 1585 Comment
  UC582700  Mimulus guttatus Joseph P. Tracy 1932-7-16 10612 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC79538  Mimulus guttatus Kenneth Clark 1979-7-1 456 Humboldt Dead Man's Gulch; at Shelter Cove 11 Comment
  JEPS25699  Mimulus guttatus P. C. Hutchison 1961-5-22 2033 Humboldt 1/2 mi above Somes Bar (Hiway 299 ca. 100 ft. from Siskiyou Co. line) Comment
  UC582712  Mimulus inodorus Joseph P. Tracy 1935-7-24 14198 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  UC1196830  Mimulus microphyllus Joseph P. Tracy 1933-8-6 12932 Humboldt Lyons Ranch Bald Hills 762 Comment
  UC582696  Mimulus microphyllus Joseph P. Tracy 1936-5-29 14818 Humboldt French Camp Ridge 1066 Comment
  HSC56317  Mimulus moschatus Overton, Butler 1979-8-2 12656 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC98001  Mimulus moschatus Cara Witte 2007-7-20 558 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  HSC44775  Mimulus moschatus Thomas W. Nelson, Jane Nelson 1977-7-4 3606 Humboldt Along road north from Alder Springs 1524 Comment
  HSC32277  Mimulus nanus var. nanus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5626 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC582706  Mimulus nasutus Joseph P. Tracy 1927-3-27 7850 Humboldt near South Fork; Trinity River Valley 182 Comment
  CDA30215  Mimulus pilosus M. K. Beyers, I. Shepardson 2009-9-13 238 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
  HSC18484  Mimulus pilosus Jana Kattenhorn 1970-10-28 200 Humboldt Mad River, Essex Rd. off Hwy. 299 Comment
  HSC99450  Mimulus primuloides var. primuloides K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 100 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
  RSA21094  Minuartia douglasii C. B. Wolf 1937-6-14 8822 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC4056  Minuartia douglasii D. E. Anderson 1965-5-15 3695 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. Comment
  HSC40009  Minuartia nuttallii subsp. gregaria Thomas W. Nelson, Jane P. Nelson 1976-7-1 2905 Humboldt Along ridge N of Bear Creek. 1463 Comment
  HSC56219  Mitella caulescens G. L. Clifton, Griswold 1979-8-2 12242 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS49686  Mitella caulescens Joseph P. Tracy 1923-6-24 6361 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC24390  Mitella diversifolia J. O. Sawyer 1970-6-24 2252 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  RSA273428  Mitella ovalis M. A. Baker 1977-4-23 175 Humboldt 2.5 miles South of Shelter Cove Road. South fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC75445  Mitella trifida J. O. Sawyer 1980-7-18 3602 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC1116235  Moehringia macrophylla Joseph P. Tracy 1942-6-2 17103 Humboldt Valley of South Yager Creek 762 Comment
  UCD98355  Moehringia macrophylla D. C. Hagar 1957-5-16 94 Humboldt Happy Camp Mountain, 7.5 miles southeast of Willow Creek and 5.25 milse northeast of Salyer. 1219 Comment
  RSA0017594  Monardella villosa subsp. subserrata Marcus E. Jones 1931-7-16 s.n. Humboldt Junction, East of Arcata. Comment
  JEPS62396  Monardella villosa subsp. villosa W. L. Jepson 1932-7-28 16433 Humboldt Dyerville 88 Comment
  UC479138  Monardella villosa subsp. villosa Marcus E. Jones, A. M. 1931-7-16 28821 Humboldt Junction, East of Arcata Comment
  HSC26743  Moneses uniflora K. Irwin 1973-6-19 Humboldt S of road to Fern Canyon Comment
  CAS-BOT-BC453471  Monotropa hypopitys Doris K. Kildale 1926-6-6 2111 Humboldt Trail to Gold Bluffs Comment
  UC673013  Montia chamissoi Joseph P. Tracy 1932-7-10 10378 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  UC659346  Montia diffusa Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2615 Humboldt 1 mi below Dinsmore's (above Van Duzen River) 762 Comment
  BLMAR621  Montia howellii Jennifer Anthony-Wheeler 2009-5-20 521 Humboldt Lacks Creek, On main westside road on vernally wet inboard ditch behind gate 853 Comment
  JEPS43276  Montia howellii J. P. Tracy 1909-5-2 2956 Humboldt Eureka Comment
  CAS-BOT-BC445152  Montia parvifolia C. C. Harris; S. K. Harris 1936-6-12 3341 Humboldt On Chalk Mountain near Bridgeville. Comment
  HSC55086  Montia parvifolia G. L. Clifton, Terry Griswold 1979-7-31 11753 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC55167  Montia parvifolia Gilbert Muth 1979-8-1 12160 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC90390  Morella californica Jean Hanson 1980-4-12 49 Humboldt Indian (Gunther) Island, Humboldt Bay, W end of island Comment
  HSC44168  Muhlenbergia filiformis Thomas W. Nelson, Jane P. Nelson 1977-9-3 3738 Humboldt Head of Bear Creek 1585 Comment
  SEINET7294630 Image available Muhlenbergia mexicana var. filiformis Joseph P. Tracy 1916-1 4774 Humboldt South fork of Eel River, 4 miles above the mouth 61 Comment
  UCD138687  Muscari armeniacum Joseph M. DiTomaso 1976-3-28 344 Humboldt Samoa Cookhouse 3 miles northwest of Eureka. Comment
  UC525573  Myosotis discolor Joseph P. Tracy 1925-5-10 6963 Humboldt near Hydesville; Northern Coast Ranges 91 Comment
  HSC3743  Myosotis discolor J. R. Good 1964-5-15 42 Humboldt Mad River Park. NE of parking lot, 85 yds. towards Mad River Comment
  SEINET5624170 Image available Myosotis sylvatica R. D. Modafferi 1965-1 s.n. Humboldt 0.5 mile south of Trinidad on old highway 101 305 Comment
  UC275529  Myrica californica Joseph P. Tracy 1924-1-20 6596 Humboldt near Samoa (around Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  HSC98157  Narcissus pseudonarcissus N. D. Dennis 1965-4-8 15 Humboldt Old Arcata Rd. at Jacoby Creek Rd. Comment
  SEINET3992074  Narthecium californicum Unknown 1930-7-17 9003 Humboldt South Fork Mountain, at McKay Camp 1676 Comment
  CAS-BOT-BC60346  Nasturtium officinale Doris K. Kildale 1927-6-25 3555 Humboldt Shelter Cove. Comment
  HSC102140  Navarretia capillaris M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1044 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC55328  Navarretia divaricata Griswold, Butler 1979-7-12 7167 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC1222721  Navarretia intertexta Joseph P. Tracy 1950-6-23 18860 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  POM208984  Navarretia intertexta Lincoln Constance 1934-5-27 697 Humboldt Sandbar of south fork of Eel River at Dyerville bridge 43 Comment
  UC1198603  Navarretia intertexta Joseph P. Tracy 1906-7-4 2525 Humboldt near Carlotta (near Hydesville); Northern Coast Region 60 Comment
  UC1197894  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1933-8-30 13055 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  UC133635  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1908-6 2920 Humboldt nw slope Buck Mountain; Northern Coast Ranges, nw slope Buck Mountain 1219 Comment
  UC146171  Navarretia squarrosa J. P. Tracy 1904-7-31 2135 Humboldt immediate vicinity Eureka 0 Comment
  UC133643  Navarretia squarrosa J. P. Tracy 1909-7-18 3019 Humboldt Ocean Beach at Samoa Samoa Comment
  SEINET200628  Navarretia viscidula Joseph P. Tracy 1918-7-5 5036 Humboldt White Thorn Valley 305 Comment
  UC169009  Nemophila heterophylla Mrs. M. H. Manning Mar. 1902 Humboldt Hupa Comment
  HSC13589  Nemophila menziesii D. E. Anderson 1965-4-24 3532 Humboldt Along Titlow Hill Rd. Comment
  UC1239736  Nemophila menziesii Joseph P. Tracy 1935-5-26 13910 Humboldt Lone Star Creek , Lone Star Creek (Iaqua Region) 609 Comment
  UC24261  Nemophila menziesii var. atomaria Mrs. Manning Humboldt Hupa Comment
  UC203959  Nemophila menziesii var. atomaria Joseph P. Tracy 1918-4-7 4867 Humboldt Moonstone Beach Northern Coast Ranges, Little River, Moonstone Beach (mouth of Little River, grassy slopes facing ocean) 15 Comment
  HSC79523  Nemophila parviflora Kenneth Clark 1980-3-23 533 Humboldt Along S Fork of Dead Man's Gulch 61 Comment
  JEPS1920  Nemophila pedunculata Joseph P. Tracy 1917-4-29 4779 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  JEPS1926  Nemophila pedunculata Joseph P. Tracy 1927-3-27 7858 Humboldt near South Fork Trinity River (Trinity River Valley); Northern Coast Ranges, nr South Fork Trinity River Valley 182 Comment
  OBI36374  Notholithocarpus densiflorus var. densiflorus David J. Keil 1983-7-1 17266 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  RSA0013605  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-14 9353 Humboldt Town of Blue Lake. 15 Comment
  UC275320  Nuphar lutea subsp. polysepala Joseph P. Tracy 1923-6-27 6385 Humboldt Trinity River Valley near the South Fork, Lack Pond Lack Pond; Northern Coast Ranges, Trinity River Valley, Lack Pond 182 Comment
  CAS-BOT-BC400074  Nuphar polysepala L. R. Abrams 1918-6-16 7160 Humboldt Willow Creek Comment
  UC582473  Nuttallanthus texanus Joseph P. Tracy 1928-5-6 8431 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC1222314  Oemleria cerasiformis Joseph P. Tracy 1951-6-21 19514 Humboldt opposite Willow Creek; Trinity Valley Comment
  UC183584  Oemleria cerasiformis Joseph P. Tracy 1912-3-31 3564 Humboldt Blue Lake; Northern Coast Ranges 30 Comment
  UC1197139  Oenanthe sarmentosa Joseph P. Tracy 1943-7-18 17438 Humboldt Big Lagoon 6 Comment
  CDA38486  Oenanthe sarmentosa Bellue-Goodwin 1932-9-27 s.n. Humboldt Arcata. 0 Comment
  CDA38492  Oenanthe sarmentosa Margaret Bellue Jul 1933 s.n. Humboldt [no further data] 0 Comment
  HSC49088  Oenothera elata subsp. hookeri Patricia Shesgreen 1978-8-12 134 Humboldt 1/2 mi. E of Samoa Cookhouse on Vance Ave., Samoa. Comment
  HSC93791  Oenothera wolfii D. K. Imper 1986-6-5 21 Humboldt Adjacent to onramp, Hwy. 101 S , S side of Klamath River, S of Klamath 12 Comment
  HSC37886  Olsynium douglasii var. douglasii Thomas W. Nelson 1976-4-3 2288 Humboldt On large rock at head of Goat Rock slide, N side of Van Duzen River Comment
  JEPS26031  Orobanche californica subsp. californica Joseph P. Tracy 1930-7-21 8893 Humboldt Cape Mendocino, near ocean shore, south of point of the Cape. Comment
  HSC45381  Orobanche fasciculata R. York 1978-5-20 175 Humboldt Above Bluff Creek Trail on W facing slope. 610 Comment
  UC35308  Orobanche uniflora subsp. occidentalis W. C. Blasdale 1896-6-8 Humboldt Graham's. Comment
  HSC48857  Orthilia secunda Brad Klipfel 1973-7-15 200 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS9402  Orthocarpus imbricatus Joseph P. Tracy 1932-7-11 10416 Humboldt Trinity Summit , open places at Corral Prairie (open places at Corral Prairie) 1584 Comment
  SEINET12270144  Orthocarpus imbricatus J. P. Tracy 1951-1 19562 Humboldt halfway between Snow Camp & Twin Lakes Comment
  POM67067  Orthocarpus lithospermoides Marcus E. Jones 1924-4-28 s.n. Humboldt Dyerville. Comment
  RSA246669  Orthocarpus purpurascens var. latifolius Robert F. Thorne, Percy C. Everett 1965-8-7 35219 Humboldt Samoa Peninsula. 3 Comment
  HSC21583  Osmorhiza berteroi R. D. Zortman 1963-5-15 49 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  UC1197130  Osmorhiza occidentalis Joseph P. Tracy 1936-6-17 14948 1/2 Humboldt Buck Mountain Northern Coast Ranges (lower foothills, on nw slope) 762 Comment
  HSC12755  Oxalis corniculata M. J. Athey 1970-11-22 23 Humboldt In Arcata along G street in front of P G & E Comment
  HSC16703  Oxalis oregana D. E. Anderson 1961-8-11 1726 Humboldt E of Humboldt State University campus 30 Comment
  HSC59664  Oxalis oregana George Kirn 1977-10-3 Humboldt Vicinity of Jolly Giant Creek, 1/4 mi. E of HSU campus 46 Comment
  POM278933  Oxalis oregana Lyman Benson 1927-7-12 225 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; River: South Fork Eel. 61 Comment
  SD53235  Oxalis oregana Darley F. Howe 1962-5-22 3309 Humboldt 3.0 miles east of Orick n Bald Mountain road. 395 Comment
  SD90203  Oxalis oregana Benjamin C. Stone 1952-6-20 113 Humboldt Holmes, on Highway 101 by Founders, Tree. Comment
  HSC30825  Parapholis strigosa J. P. Smith, Dennis Anderson 1971-6-14 - 1051 Humboldt At foot of G St., Arcata. Comment
  UC1409051  Parentucellia viscosa Robert F. Thorne and P. Everett 1965-8-7 35202 Humboldt Samoa Peninsula Comment
  UCR275120  Parentucellia viscosa Charity A. Hartshorn 2016-4-24 22 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  UC1103769  Paspalum dilatatum Fred M. Kay 1929-10-1 Humboldt near Blocksburg 457 Comment
  UC582556  Pedicularis densiflora Joseph P. Tracy 1937-4-3 15251 Humboldt Willow Creek; Trinity River Valley 152 Comment
  SEINET10548991  Pedicularis densiflora subsp. densiflora Jones 1985-4-20 Jones 21 A Humboldt T34n,r6e,sec.21. Burnt ranch campground, shasta-trinity ntl. Froest. Found at Entrance to campground 433 Comment
  JEPS3357  Pedicularis racemosa Joseph P. Tracy 1930-7-16 8917 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC74031  Pellaea brachyptera Gail Newton 1980-7-22 1674 Humboldt Near Devils Backbone 1554 Comment
  HSC39931  Pellaea brachyptera J. O. Sawyer 1970-6-25 2294 Humboldt 1646 Comment
  RSA293127  Pellaea mucronata Thomas W. Nelson, James Nelson 1976-5-30 2612 Humboldt McKeown Ranch north of Dinsmore. Comment
  CAS-BOT-BC67623  Pellaea mucronata Donald Branscomb 1959-4-1 s.n. Humboldt Bear Butte, near Garberville. 853 Comment
  HSC24382  Penstemon anguineus J. O. Sawyer 1970-6-24 2255 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 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
  UC1011933  Penstemon anguineus F. W. Pennell and J. P. Tracy 1940-7-7 26092 Humboldt w Salyer (Grouse Mountain); w of Salyer, Grouse Mountain 1371 Comment
  HSC54203  Penstemon deustus Terry Griswold, Marvin Butler 1979-7-12 7243 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC74482  Penstemon deustus Gail Newton 1980-7-24 1767 Humboldt Near Somes Mtn. 1615 Comment
  JEPS28976  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1940-5-5 16544 Humboldt Garberville Garberville (along river) 152 Comment
  HSC36637  Penstemon laetus subsp. sagittatus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1905 Humboldt N side of Pine Mtn. Comment
  JEPS11631  Penstemon laetus var. sagittatus Joseph P. Tracy 1933-7-25 12827 Humboldt Horse Mountain 1432 Comment
  NY604558  Penstemon laetus var. sagittatus R. W. Spellenberg 1990-7-10 10241 Humboldt Extreme east edge county, 11 air miles east of Burnt Ranch at 11 miles south of Berry Summit (on California Highway 299) on USFS 1 1432.6 Comment
  UC41715  Penstemon laetus var. sagittatus Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  HSC63246  Penstemon newberryi var. berryi M. A. Baker 1979-6-27 932 Humboldt E of Oregon Creek Comment
  JEPS7918  Penstemon rattanii Joseph P. Tracy 1921-6-12 5822 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC146247  Penstemon rattanii Joseph P. Tracy 1906-6-10 2480 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UCSB51227  Pentagramma triangularis subsp. triangularis Almanza, Ed 1976-7-16 Humboldt 6.2 miles west of Berry Summit, Highway 299 762 Comment
  UC1222743  Perideridia oregana Joseph P. Tracy 1949-7-19 18388 Humboldt 1/4 mi se Clear Lake (top of ridge); Grouse Mountain 1524 Comment
  UCD99507  Persicaria lapathifolia Malcolm A. Nobs; S. Galen Smith 1949-8-9 1232 Humboldt Southern side of the town of Blue Lake. Comment
  CHSC114378  Persicaria wallichii B. Villegas; Bruce Bryan 2009-10-6 Humboldt Near Trinidad; Patricks Point Drive at Seawood Drive, east of Hwy 101. 91 Comment
  POM160824  Petasites palmatus Joseph P. Tracy 1926-2-28 7377 Humboldt Trinity River Valley, near the S Fork. 183 Comment
  BLMAR591  Phacelia egena Jennifer Wheeler 2010-7-13 591 Humboldt King range, Panther Gap Road 792 Comment
  HSC30744  Phacelia heterophylla subsp. virgata D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5620 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  RSA167317  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1951-6-24 19539 Humboldt Rock exposure between serpentine rock pile and Ashfield Butte. Kneeland Prarie. 762 Comment
  UC673228  Phacelia heterophylla subsp. virgata Lincoln Constance and Reed C. Rollins 1942-5-11 2876 Humboldt 5 mi s Hoopa; North Coast Ranges, Hoopa Valley 121 Comment
  UC562581  Phacelia malvifolia Joseph P. Tracy 1927-6-8 8118 Humboldt Trinidad 3 Comment
  HSC57166  Phacelia mutabilis Overton, Butler 1979-7-26 9971 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC57214  Phacelia mutabilis Griswold, Butler 1979-7-12 7263 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC10560  Phalaris californica J. P. Tracy 1925-6-7 7085 Humboldt Lord-Ellis Rd on Bald Mtn. Comment
  UCD89189  Phalaris minor A. H. Murphy 1951-6-6 s.n. Humboldt W Roscoe at Upper Mattole. Comment
  UC1035063  Philadelphus lewisii Roxana S. Ferris 1955-7-11 12975 Humboldt summit of US Hwy 299 betw. Willow Creek and Blue Lake Comment
  RSA0046937  Philadelphus lewisii Doris K. Kildale 1927-7-2 3661 Humboldt Redwood Creek at Berry s. Comment
  SEINET12219857  Philadelphus lewisii subsp. californicus J. P. Tracy 1950-1 18853 Humboldt along Redwood Creek, 2 mi W of Briceland Comment
  HSC55333  Phlox adsurgens Griswold, Butler 1979-7-12 7177 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC162583  Phlox adsurgens Joseph P. Tracy 1911-7-7 3418 Humboldt viz ridge n of Willow Creek (between Willow Creek and Campbell Creek, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  HSC55604  Phlox diffusa Overton, Butler 1979-7-23 9428 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  JEPS69961  Phlox diffusa Joseph P. Tracy 1933-7-11 12657 Humboldt Horse Mountain 1432 Comment
  HSC60287  Phoradendron serotinum subsp. tomentosum Phyllis Krieg 1979-5-14 Humboldt Korbel Post Office 30 Comment
  JEPS26749  Phoradendron villosum W. L. Jepson 1932-7-24 16545 Humboldt ca. 6 1/2 mi. above & e. Garberville (from near rd. along summit of Mail Ridge) 914 Comment
  HSC18709  Physocarpus capitatus W. R. Rogers 1966-5-1 217 Humboldt N bank of Mad River Comment
  JEPS44665  Physocarpus capitatus Lincoln Constance 1934-5-26 656 Humboldt s end Dyerville Bridge (s bank of S. Fork of Eel River); Bull Creek Region Comment
  CAS-BOT-BC73443  Picea sitchensis Doris K. Kildale 1927-5-14 3201 Humboldt Big Lagoon Comment
  RSA2205  Picea sitchensis C. B. Wolf 1930-10-28 s.n. Humboldt 5 miles S of Ferndale on road to Petrolia. 152 Comment
  HSC98703  Pinus attenuata Cara Witte 2007-9-3 640 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36. 1448 Comment
  NY49715  Pinus contorta var. contorta H. E. Parks 03 1938 24125 Humboldt Spruce Cove, Trinidad 61.0 Comment
  HSC90184  Pinus lambertiana Andrew Enberg, Brad Penkala, Dan Scofield 1990-4-22 56 Humboldt USFS Rd. 5N10, 2.4 mi. from its intersection with Rd. 6N08, Bulk Collection # 233 1341 Comment
  CAS-BOT-BC79031  Pinus ponderosa Doris K. Kildale 1927-5-5 3108 Humboldt Elk Ridge Comment
  JEPS79893  Piperia elongata Joseph P. Tracy 1925-7-12 7213 Humboldt near the South Fork Trinity River Valley; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1196412  Piperia unalascensis Joseph P. Tracy 1926-5-30 7521 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  HSC63838  Pityopus californicus M. A. Baker 1979-6-26 906 Humboldt N side of ridge near summit Comment
  HSC44635  Plagiobothrys nothofulvus Diane L. Reed 1978-5-7 61 Humboldt 2 mi. up Friday Ridge Rd. from Hwy. 299 Comment
  JEPS30758  Plagiobothrys reticulatus H. E. Parks 1937-7-1 24042 Humboldt Spruce Cove Trinidad 64 Comment
  UC1239569  Plagiobothrys reticulatus Joseph P. Tracy 1909-5-23 2972 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC184998  Plagiobothrys reticulatus Joseph P. Tracy 1904-7-4 2111 Humboldt at Eureka; Northern Coast Region, Eureka 0 Comment
  UC582614  Plagiobothrys reticulatus Joseph P. Tracy 1936-6-9 14905 Humboldt Upper Mattole Valley 121 Comment
  JEPS60969  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1904-7-4 2111 Humboldt Eureka Northern Coast Region 0 Comment
  JEPS60998  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1937-6-20 15335 Humboldt ten mi up stream from mouth; Bear River 152 Comment
  UC206138  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1909-6-6 2988 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC54756  Plagiobothrys tenellus Harley P. Chandler May, 1901 1255 Humboldt Redwood Belt/Region North Coast Ranges 152 Comment
  UC585994  Plantago elongata Joseph P. Tracy 1927-6-26 8218 Humboldt Stone Lagoon 6 Comment
  HSC16830  Plantago erecta D. B. Bader 1963-3-15 28 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  JEPS6422  Plantago erecta Joseph P. Tracy 1932-5-10 9930 Humboldt Bear River Ridge Northern Coast Ranges, Mattole Valley 609 Comment
  SEINET12342198  Plantago erecta J. P. Tracy 1950-1 18730 Humboldt Bear River Ridge 610 Comment
  UCD124475  Plantago erecta Peter H. Raven 1963-5-15 18371 Humboldt Lanphere Ranch just west of Mad River Slough, near Arcata. Comment
  HSC16836  Plantago lanceolata A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek junction, 200 yds. W of Lindsey Creek Comment
  HSC55109  Plantago lanceolata G. L. Clifton 1979-7-31 11853 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  OBI11640  Plantago lanceolata Joseph P. Tracy 1947-8-10 17882 Humboldt Eureka Comment
  RSA246721  Plantago major Robert F. Thorne, Percy C. Everett 1965-8-8 35233 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  UC154020  Plantago subnuda J. P. Tracy 1903-8-9 1937 Humboldt immediate vicinity Eureka 0 Comment
  SEINET10296821  Platanthera dilatata var. leucostachys Unknown 1933-1 Humboldt Comment
  RSA21199  Platanthera leucostachys Carl B. Wolf 1937-8-10 9087 Humboldt Big Lagoon, bog at state park. 6 Comment
  CAS-BOT-BC136647  Platanthera stricta Doris Kildale 1931-5-19 10684 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  SFV18500  Platystemon californicus A. M. Deshais 2002-4-12 36 Humboldt Manila Dunes. Comment
  UC1239574  Plectritis congesta Joseph P. Tracy 1916-4-30 4680 Humboldt Northern Coast Ranges, around Humboldt Bay, Salmon Creek Valley Salmon Creek Valley; Northern Coast Ranges, Salmon Creek Valley 60 Comment
  HSC21693  Plectritis congesta subsp. brachystemon R. T. Forester 1963-4-23 21 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  HSC10611  Pleuropogon refractus R. Spellenberg 1965-6-14 1134 Humboldt 1.5 mi E of Bayside on road leading up Jacoby Creek Comment
  SJSU16005  Pleuropogon refractus John Rawlings 2016-5-19 1802 Humboldt James Irvine Trail between the lower trailhead and the Fern Canyon turnoff, Prairie Creek Redwoods State Park 22 Comment
  UCD90101  Pleuropogon refractus A. A. Beetle; G. L. Stebbins Jr., J. P. Tracy 1942-6-2 3482 Humboldt branch of South Fork of Yager Creek. North of Yager. Comment
  CDA32631  Pleuropogon refractus E. C. Whitney 1971-5-28 Humboldt North of Orick 0 Comment
  SEINET10589989  Poa Rattan 1878-1 RATTAN s.n. Humboldt Common in inherited ... Comment
  HSC10623  Poa annua Gene S. Van Horn 1962-5-2 10 Humboldt Near main house at 250 East 17th St., Arcata. 61 Comment
  UC525625  Poa annua Joseph P. Tracy 1934-3-11 13148 Humboldt Weitchpec 121 Comment
  UC1103798  Poa bolanderi Joseph P. Tracy 1947-6-26 17742 Humboldt forest near McKay camp (South Fork Mt); South Fork Mt 1676 Comment
  HSC10683  Poa confinis E. W. Styskel 1964-5-7 79 Humboldt 2 mi. S of Samoa near Samoa Rd., near beach. Comment
  HSC46977  Poa douglasii J. P. Smith, Thomas W. Nelson 1977-6-30 9223 Humboldt Samoa Peninsula just E of the drag strip. Comment
  UC65292  Poa howellii Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5353 Humboldt Bells Springs Comment
  HSC10721  Poa kelloggii D. E. Anderson 1965-5-6 3622 Humboldt 4.8 mi. W of bridge over N Fork of Mad River, along Hwy. 299 Comment
  RSA10115  Poa kelloggii Joseph P. Tracy 1926-4-25 7415 Humboldt Grizzly Creek on Van Duzen River 91 Comment
  UC525619  Poa kelloggii Joseph P. Tracy 1926-5-22 7504 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  HSC90698  Poa macrantha Gail Newton 1982-6-5 3576 Humboldt Elk River Wildlife Area, Eureka. Comment
  POM20541  Poa macrantha F. W. Peirson 1923-7-11 3645 Humboldt 18 miles N. of Eureka Comment
  RSA296739  Poa macrantha J. P. Smith, Thomas W. Nelson 1977-6-30 9223 B Humboldt Samoa Peninsula just east of the drag strip. Comment
  UCD91557  Poa nemoralis A. E. Lyons 1926-6-1 s.n. Humboldt in city of Orick. Comment
  HSC10764  Poa pratensis Gene S. Van Horn 1962-5-5 13 Humboldt Arcata, 250 East 17th St. 61 Comment
  HSC75471  Poa pratensis J. O. Sawyer 1980-7-18 3618 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC102191  Poa secunda subsp. secunda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1105 Humboldt Andy's Camp 1564 Comment
  HSC10713  Poa secunda subsp. secunda G. N. Bos 1965-5-15 269 Humboldt 2 mi. W of Berry Summit along U.S. 299. 701 Comment
  HSC98601  Poa secunda subsp. secunda Cara Witte 2007-6-4 183 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UCD91730  Poa secunda subsp. secunda A. H. Murphy 1947-4-2 s.n. Humboldt 2 miles S of Blocksburg. Comment
  UCD92128  Poa unilateralis Harley P. Chandler 1901-5-1 1140 Humboldt Humboldt Bay. 3 Comment
  JEPS69885  Polemonium carneum Joseph P. Tracy 1928-5-20 8440 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  JEPS43010  Polygala californica Lincoln Constance 1934-5-23 608 Humboldt se slope of mountain above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  CAS-BOT-BC414301  Polygonum aviculare subsp. neglectum H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  HSC100601  Polygonum bistorta Carl C. Marshall Jun 1886 269 Humboldt Trinity Summit. Comment
  UC672974  Polygonum bistortoides Joseph P. Tracy 1930-7-16 8924 Humboldt McKay Camp South Fork Mountain 1676 Comment
  UC55506  Polygonum davisiae Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5806 Humboldt Trinity Summit North Coast Ranges Comment
  UC146188  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1908-6 2766 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC1713699  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1919-9-18 5237 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  RSA152547  Polygonum kelloggii Joseph P. Tracy 1932-7-10 10379 Humboldt Trinity Summit Corral Prairie, in wet meadow Comment
  HSC55270  Polygonum minimum Overton, Butler 1979-8-2 12643 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC56172  Polygonum minimum G. L. Clifton, Griswold 1979-8-1 12065 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UCD100508  Polygonum paronychia Linda M. Barker 1976-5-13 1487 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC103385  Polygonum phytolaccifolium K. Auker, R. Battleson 2007-6-15 13 Humboldt Grouse Mtn.; along Forest Service Road 5N04, 1.0 mi. E of FS Road NF1. 1494 Comment
  CDA2924  Polygonum polystachyum Thomas W. Nelson, M. Alcasas 1978-10-1 4555 Humboldt Highway 101 right-of-way just north of Humboldt State University exit. 0 Comment
  UC1052470  Polygonum sachalinense H. E. and S. T. Parks July 1952 24448 Humboldt Hwy 10 s Elk River Bridge Comment
  HSC54719  Polygonum spergulariiforme Overton, Butler 1979-7-26 10094 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  CAS-BOT-BC421004  Polygonum spergulariiforme Doris K. Kildale 1928-6-24 5296 Humboldt Entrance to Horse Mountain 853 Comment
  HSC74673  Polypodium californicum Gail Newton 1981-5-16 2171 Humboldt Near Bug Creek. 1228 Comment
  HSC1126  Polypodium glycyrrhiza R. D. Zortman 1963-5-5 35 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  UC275412  Polypodium glycyrrhiza Joseph P. Tracy 1925-11-25 7326 Humboldt near the S Fork Trinity River Valley; Northern Coast Ranges 182 Comment
  SEINET200797 Image available Polypodium scouleri Frank C. Gregory 1923-8-4 Humboldt Eureka 61 Comment
  HSC1130  Polypodium scouleri W. R. Supernaugh, Jr. 1964-12-11 14 Humboldt 300 yards S of Trinidad Harbor 9 Comment
  RSA689966  Polypodium scouleri Susan Hutchinson 1931-07 102 Humboldt Grade between Trinidad and Big Lagoon 15 Comment
  UCSB26619  Polypodium scouleri Havlik, Neil 1968-8-21 Humboldt Samoa, west of Eureka 9 Comment
  SEINET200576 Image available Polypogon interruptus Joseph P. Tracy 1927-7-16 8260 Humboldt on pasture. Comment
  CAS-BOT-BC233215  Polypogon maritimus Joseph P. Tracy 1930-10-19 9236 Humboldt Eel River, Alton to Fortuna 15 Comment
  HSC10832  Polypogon maritimus D. E. Anderson 1965-9-5 4077 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  UC1145087  Polypogon maritimus Joseph P. Tracy 1938-7-11 16048 Humboldt near Samoa (sand dunes); on Humboldt Bay, near Samoa 6 Comment
  UCD91220  Polypogon monspeliensis Linda M. Barker 1976-6-22 1625 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD91351  Polypogon monspeliensis Kathleen Moore 1964-7-14 12 Humboldt Kneeland at the Star Barn. 762 Comment
  RSA10061  Polypogon viridis Joseph P. Tracy 1926-7-4 7697 Humboldt [Unspecified] Comment
  HSC72980  Polystichum imbricans Gail Newton 1980-7-15 1578 Humboldt Near Sims Mtn. 1311 Comment
  HSC54599  Polystichum munitum Overton, Butler 1979-7-24 9679 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC98660  Polystichum munitum Cara Witte 2007-7-26 597 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1443 Comment
  RSA693321  Polystichum munitum M. S. Jussel 1931-5-2 s.n. Humboldt Sylvandale, 8 mi north of Garberville Comment
  HSC41354  Polystichum munitum Brad Klipfel 1974-8-2 508 Humboldt Horse Mtn., along Horse Mtn. Creek Comment
  UC249777  Polystichum munitum Joseph P. Tracy 1924-8-10 6803 Humboldt near Strongs Station (on Van Duzen River); Northern Coast Ranges 60 Comment
  UC249849  Polystichum munitum Joseph P. Tracy 1924-8-24 6828 Humboldt E Fork Willow Creek; Northern Coast Ranges 457 Comment
  UC1196662  Populus trichocarpa Joseph P. Tracy 1932-5-11 9970 Humboldt 2 mi n Samoa; North Coast Ranges 6 Comment
  UC668004  Populus trichocarpa Joseph P. Tracy 1938-11-26 16178 Humboldt on South Fork of Eel River between Miranda and Redway Sylvandale; North Coast Ranges, on South Fork of Eel River 91 Comment
  UC1103513  Potamogeton natans Joseph P. Tracy 1928-9-2 8498 Humboldt Fruitland 609 Comment
  UC672876  Potamogeton pectinatus Joseph P. Tracy 1934-7-20 13462 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC143075  Potentilla anserina subsp. pacifica Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC18731  Potentilla anserina subsp. pacifica W. A. Heaton 1965-5-17 3 Humboldt 1/2 mi. N of Trinidad on trail near beach Comment
  POM366485  Potentilla anserina var. grandis Glenn A. Gorelick 1967-6-4 s.n. Humboldt Samoa Beach, near Eureka. Marine Sand dunes. Comment
  CAS-BOT-BC142025  Potentilla drummondii Doris K. Kildale 1925-8-17 1233 Humboldt Waterdog Lake - Trinity Summit 1828 Comment
  HSC56374  Potentilla gracilis var. fastigiata Griswold, Butler 1979-7-11 6398 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  UC585628  Potentilla gracilis var. gracilis Joseph P. Tracy 1933-8-6 12929 Humboldt on Bald Hills e Orick (Tomlinson Ranch); on Bald Hills e of Orick, Tomlinson Ranch 670 Comment
  RSA135410  Potentilla palustris Volney Rattan 1883-6-4 s.n. Humboldt 3 miles from Eureka Comment
  HSC44447  Prosartes hookeri Brad Klipfel 1975-5-30 658 Humboldt N of Horse Mtn. Comment
  HSC73152  Prosartes hookeri M. A. Baker 1980-5-18 1303 Humboldt Near Black Mtn. 1006 Comment
  HSC74394  Prosartes hookeri Gail Newton 1980-6-28 712 Humboldt Near Mad River Butte. 1536 Comment
  CAS-BOT-BC508640  Prosartes hookeri Doris K. Kildale 1926-7-22 2420 Humboldt Metropolitan, woods near Canyon Park Comment
  SEINET12050377  Prosartes smithii F. H. Utech 1988-1 88 -271 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Mile Marker 11.40, Van Duzen County Park 50 Comment
  SEINET13947064 Image available Prunella vulgaris W. J. Ferlatte, B. D. Rogers 1966-1 2083 Humboldt 1 mi E of Forest Glen; 2400 ft alt., T29E, R8E, SEC19 732 Comment
  UC418989  Prunella vulgaris var. lanceolata H. E. Parks and J. P. Tracy 1930-9-14 770 Humboldt above Bayside Comment
  UCD125323  Prunella vulgaris var. lanceolata K. Esau 1934-5-6 s.n. Humboldt Fort Seward. 152 Comment
  HSC102105  Prunus emarginata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1008 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC127827  Pseudognaphalium californicum Joseph Burtt Davy and Walter C. Blasdale 1899-6-26 5890 Humboldt Francis Ridge Comment
  SD148240  Pseudognaphalium stramineum G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7013 Humboldt Samoa Peninsula, 2.6 miles south of California Highway 255, bridge across Humboldt Bay. 14 Comment
  CAS-BOT-BC80113  Pseudotsuga menziesii Joseph P. Tracy 1949-4-3 18278 Humboldt Trinidad 60 Comment
  CAS-BOT-BC80116  Pseudotsuga menziesii Doris K. Kildale 1927-12-1 4193 Humboldt Klamath River at Orleans Comment
  CAS-BOT-BC80120  Pseudotsuga menziesii Doris K. Kildale 1926-11-27 2840 Humboldt Alton Hill, old terrace above lower Van Duzen River Comment
  SEINET11737772  Pseudotsuga menziesii K. S. Erdman 1970-1 4792 Humboldt Redwood National Park near Holter Ridge entrance along Bald Hills Road, SE of Orick Comment
  UC673081  Psilocarphus brevissimus var. brevissimus Joseph P. Tracy with Dr. F. W. Pennell 1940-7-7 16674 Humboldt Grouse Mt. 1554 Comment
  UC1223162  Psilocarphus tenellus Joseph P. Tracy 1948-7-26 18075 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1223167  Psilocarphus tenellus Joseph P. Tracy 1950-5-30 18713 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCD18378  Psoralea micrantha Bryant Washburn 1974-7-8 s.n. Humboldt 12 miles west of Winnemucca, Milepost 519.75, at Raglan siding, in ballast section along Western Pacific Railroad tracks. Comment
  HSC55195  Pteridium aquilinum var. pubescens G. L. Clifton, Griswold 1979-8-2 12291 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 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
  HSC36274  Pteridium aquilinum var. pubescens John Rehling 1974-7-8 11 Humboldt Along Bald Hills Rd. 23.5 mi. from Hwy. 101 Comment
  UC672932  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  HSC10868  Puccinellia nutkaensis J. A. Waller 1965-5-16 38 Humboldt Humboldt Bay Comment
  UC179964  Pyrola asarifolia Joseph P. Tracy 1914-7-5 4552 Humboldt Bald Mountain, between High Prairie and Snow Camp. 1066 Comment
  HSC100475  Pyrola bracteata Carl C. Marshall Jun 1885 107 Humboldt Higher hills. Comment
  HSC44551  Pyrola crypta Brad Klipfel 1973-7-15 170 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC41260  Pyrola dentata Brad Klipfel 1974-7-23 452 Humboldt Horse Mtn., N of the towers Comment
  HSC99518  Pyrola picta K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 181 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1197578  Pyrola picta Joseph P. Tracy 1932-7-14 10569 Humboldt Trinity Summit near Corral Prairie; Trinity Summit 1584 Comment
  UC412726  Pyrola picta P. E. Goddard Jun 1 1906-Jul 1 1906 687 Humboldt Blocksburg Comment
  UC1196363  Quercus X morehus Joseph P. Tracy 1916-6-19 4723 Humboldt North Fork of Dobbyn Creek Northern Coast Ranges 182 Comment
  HSC72788  Quercus chrysolepis M. A. Baker 1980-6-26 2413 Humboldt Near Sims Creek 610 Comment
  UC249714  Quercus garryana Joseph P. Tracy 1921-10-2 5965 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC275589  Quercus garryana Joseph P. Tracy 1924-8-31 6856 Humboldt Klamath River at Bluff Creek Northern Coast Ranges 91 Comment
  UC709423  Quercus garryana Joseph P. Tracy 1941-3-26 16845 Humboldt w of mouth of South Fork of Trinity River; South Fork of Trinity River 304 Comment
  SEINET12034478  Quercus garryana K. S. Erdman 1970-1 4764 Humboldt Schoolhouse Peak on Bald Hills Road about 16 mi S of Orick,T9N,R2E,Sec24 914 Comment
  HSC99122  Quercus garryana var. garryana Cara Witte 2008-9-13 1041 Humboldt Forest Service Road 4N38. 1/2 mile south of intersection to Tri Board Camp. 1506 Comment
  UC203998  Quercus kelloggii Joseph P. Tracy 1918-5-1 4895 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC70635  Quercus sadleriana R. York 1980-5-18 601 Humboldt Near Black Mtn. 792 Comment
  RSA20796  Quercus sadleriana Carl B. Wolf 1937-8-13 9261 Humboldt North Coast Range, 12 mi. E. of Hoopa Valley on New Road toward Trinity Summit. 1677 Comment
  SFV18540  Quercus sadleriana C. Lee 2002-4-27 30 Humboldt U.S. Forest Service Road 13; Blue Lake Trail. Comment
  CAS-BOT-BC104535  Quercus vacciniifolia Carl B. Wolf 1927-8-28 1173 Humboldt On grade 9 mi from Willow Creek, Lord Ellis Road to Blue Lake 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
  UC1196539  Quercus vacciniifolia Joseph P. Tracy 1932-7-18 10721 Humboldt Head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  HSC41655  Ranunculus flammula var. ovalis J. O. Sawyer 1977-4-25 3043 Humboldt N side of Buttermilk Lane in Sunny Brae across from house 1425 Comment
  UCD96220  Ranunculus muricatus Linda M. Barker 1976-4-30 1404 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC503037  Ranunculus occidentalis Joseph P. Tracy 1929-7-4 8608 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  UC1222571  Ranunculus occidentalis Joseph P. Tracy 1951-5-6 19396 Humboldt flat by old Strong's District School House (5 mi e of Carlotta) 60 Comment
  HSC39419  Ranunculus occidentalis var. occidentalis Thomas W. Nelson, Jane P. Nelson 1976-6-15 2712 Humboldt Along trail from lookout to Blocksburg 1555 Comment
  UC1196254  Ranunculus orthorhynchus var. orthorhynchus J. P. Tracy 1901-5-12 1075 Humboldt Immediate vicinity of Eureka 0 Comment
  UC162869  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1907-6-25 2574 Humboldt Elk River Valley Northern Coast Region, region about Humboldt Bay (along ditch) 0 Comment
  UCD97062  Ranunculus orthorhynchus var. platyphyllus R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  RSA97039  Ranunculus parviflorus J. T. Howell 1954-4-25 29153 Humboldt Garden weed, Arcata Comment
  POM118708  Ranunculus repens Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC1191438  Ranunculus repens Malcolm A. Nobs and S. Galen Smith 1949-8-3 1184 Humboldt Eureka; marsh and bog land at southern outskirts Comment
  HSC64069  Raphanus sativus J. P. Smith 1971-10-6 4978 Humboldt End of Murray Rd. in McKinleyville. Comment
  RSA13277  Rhamnus californica Doris K. Kildale 1928-7-25 5916 Humboldt Roadside at Humboldt-Siskiyou County line betw Sarres Bar and Orleans Comment
  JEPS42009  Rhamnus californica subsp. californica W. L. Jepson 1903-6-19 2206 Humboldt Briceland, s Humboldt County Briceland Comment
  RSA246419  Rhamnus purshiana Carl B. Wolf 1937-8-13 9260 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  UC1197984  Rhamnus purshiana J. P. Tracy 1901-8-11 1276 Humboldt immediate vicinity Eureka 0 Comment
  UC175733  Rhamnus purshiana Joseph P. Tracy 1912-9-1 3983 Humboldt Eureka Northern Coast Region 0 Comment
  HSC76365  Rhododendron macrophyllum Denis Kearns 1981-7-6 66 Humboldt Near Mosquito Lake 1256 Comment
Read comments
Jul 30 2014
  POM89847  Rhododendron occidentale Chesnut 1880-8-10 s.n. Humboldt Arcata. Comment
  UC1197792  Rhododendron occidentale Joseph P. Tracy 1921-6-19 5837 Humboldt along road between Three Creeks and mouth of Willow Creek (above Koby's); Northern Coast Ranges 609 Comment
  UC604662  Rhododendron occidentale Joseph P. Tracy 1938-7-5 16014 Humboldt 4 mi s of Eureka (Spruce Point at junction of Humboldt Hill road with highway); Spruce Point 9 Comment
  UCR32089  Rhododendron occidentale David J. Keil 1983-7-2 17313 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  SEINET11996977  Rhododendron occidentale F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -296 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  CAS-BOT-BC200384  Rhododendron occidentale var. paludosum W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  HSC54528  Rhododendron occidentale var. paludosum Overton, Butler 1979-7-23 9468 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  CAS-BOT-BC433130  Ribes Doris K. Kildale 1927-5-15 3298 Humboldt Petrolia Comment
  CAS-BOT-BC433141  Ribes W. R. Dudley 1899-1-1 s.n. Humboldt Possibly South of Arcata Comment
  HSC56093  Ribes binominatum G. L. Clifton, Griswold 1979-7-31 11794 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC58142  Ribes binominatum Gilbert Muth 1979-8-1 12167 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC92879  Ribes bracteosum Joseph P. Tracy 1948-9-5 18165 Humboldt Happy Camp Mountain. (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  UC1541338  Ribes divaricatum var. pubiflorum Parks and Parks 1932-4-10 Humboldt Blue Slide Van Duzen River Comment
  HSC48834  Ribes lacustre Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 45 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  HSC99361  Ribes lacustre K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 10 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1198916  Ribes lacustre Joseph P. Tracy 1942-6-23 17250 Humboldt near Box Camp; Trinity Summit 1524 Comment
  POM274396  Ribes laxiflorum H. E. Parks 1937-6-4 24004 Humboldt Along Prairie Creek at Valley Green Comment
  HSC102025  Ribes marshallii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 926 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  UC902109  Ribes menziesii Joseph P. Tracy 1948-3-6 17954 Humboldt Trinidad 60 Comment
  RSA0024752  Ribes roezlii Joseph P. Tracy 1950-8-4 19255 Humboldt Grasshopper Peak in Bull Creek State Park at head of Canoe Creek. Comment
  CAS-BOT-BC198869  Ribes roezlii var. amictum Alice Eastwood 1939-3-19 18898 Humboldt Bolling Grove Comment
  UC249624  Ribes roezlii var. cruentum Joseph P. Tracy 1922-4-30 6041 Humboldt Three Creeks, along road between Three Creeks and mouth of Willow Creek Northern Coast Ranges 670 Comment
  UCR45437  Ribes roezlii var. cruentum Kenneth Clark 1980-6-14 691 Humboldt Above N Fork Dead Man's Gulch 229 Comment
  RSA0024584  Ribes roezlii var. cruentum H. M. Pollard 1948-8-9 s.n. Humboldt Camp Creek, near Orleans. Comment
  CAS-BOT-BC212519  Ribes sanguineum Alice Eastwood 1907-4-21 14 Humboldt Trinidad Comment
  CAS-BOT-BC212524  Ribes sanguineum Pat Daly; Rudy Galindo 1988-4-30 85 Humboldt Titlow Road and Hwy. 299 853 Comment
  HSC48738  Ribes sanguineum Brad Klipfel 1973-6-10 69 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1222368  Ribes sanguineum Joseph P. Tracy 1950-5-6 18642 Humboldt near head Willow Creek Canyon (along Trinity Highway) Comment
  UC902056 Image available Ribes sanguineum Joseph P. Tracy 1942-6-23 17238 Humboldt near Box Camp; Trinity Summit 1524 Comment
  RSA0019530  Ribes sanguineum Barbara Ertter, Thomas Delendick 1987-5-16 6939 Humboldt Ca. 3 mi. E of Berry Summit on Highway 299, ca. 20 air miles E of Arcata; on S side of road above Willow Creek. 800 Comment
  CAS-BOT-BC144690  Ribes sanguineum var. glutinosum Doris K. Kildale 1928-2-19 4271 Humboldt Patrick's Point Comment
  CHSC68499  Ribes sanguineum var. glutinosum Vernon H. Oswald 1997-4-10 8323 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  HSC37844  Ribes sanguineum var. glutinosum Thomas W. Nelson, James Nelson 1976-3-11 2266 Humboldt Beside Eel River just N of terminus of Singley Rd. Comment
  UC1198911  Ribes sanguineum var. glutinosum Joseph P. Tracy 1925-3-15 6946 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  HSC48397  Ribes viscosissimum Brad Klipfel 1973-6-10 104 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS79969 Image available Ribes viscosissimum Joseph P. Tracy 1932-7-12 10466 Humboldt ridges e of Corral Prairie (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1828 Comment
  UC492214  Ribes viscosissimum Joseph P. Tracy Jul 16 1930-Jul 19 1930 8908 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  RSA95496  Romanzoffia californica L. S. Rose 1954-4-24 54015 Humboldt Trinidad Head. Comment
  NY337230  Romanzoffia tracyi J. P. Tracy 1933-5-9 11008 Humboldt Vicinity of Trinidad 15.2 Comment
  UC14402  Rorippa curvisiliqua Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC492263  Rorippa curvisiliqua Joseph P. Tracy 1931-9-7 9667 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CHSC19514  Rorippa nasturtium-aquaticum J. F. Knezevich 1968-5-14 433 Humboldt Collected 13 miles south of Ferndale at Cape Mendocino. -15 Comment
  HSC99055  Rorippa palustris subsp. occidentalis Cara Witte 2008-6-18 740 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  BLMAR535  Rosa gymnocarpa Jennifer Wheeler 2009-6-23 535 Humboldt King range, On Paradise Ridge road Comment
  CAS-BOT-BC146483  Rosa gymnocarpa W. R. Dudley 1899-6-1 s.n. Humboldt Shady run - Scotia 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
  UC492160  Rosa gymnocarpa Joseph P. Tracy 1932-7-13 10493 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  HSC102556  Rosa gymnocarpa var. gymnocarpa M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1544 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1281125  Rosa nutkana var. nutkana H. E. McMinn 1937-12-2 3711 Humboldt sea-cliff n Eureka Comment
  UC1541251  Rosa nutkana var. nutkana H. E. Parks June 1933 4450 Humboldt near Bolling Grove; Eel River Comment
  UC667043  Rosa nutkana var. nutkana Joseph P. Tracy 1936-6-21 14994 Humboldt Iaqua 609 Comment
  JEPS45699  Rosa pisocarpa Joseph P. Tracy 1923-9-16 6550 Humboldt near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC47955  Rosa spithamea Brad Klipfel 1974-7-23 474 Humboldt Horse Mountain Comment
  UCR179228  Rubus R. G. Swinney 1968-3-28 231 Humboldt East of Humboldt State College, Arcata 152 Comment
  UCR179289  Rubus R. G. Swinney 1968-3-28 235 Humboldt East of Humboldt State College, Arcata 152 Comment
  HSC19651  Rubus leucodermis Lincoln Constance 1934-5-24 655 Humboldt S Fork Eel River, bordering lower Look Prairie on E. side 122 Comment
  UC162332  Rubus leucodermis Joseph P. Tracy 1911-6-4 3235 Humboldt 5 mi from coast (along Little River); Northern Coast Region, along Little River 121 Comment
  UC902131  Rubus leucodermis Joseph P. Tracy 1947-8-24 17911 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC147243  Rubus parviflorus Doris K. Kildale 1926-5-14 3196 Humboldt Big Lagoon Comment
  UC492166  Rubus parviflorus Joseph P. Tracy 1932-7-15 10576 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit, nr Corral Prairie 1524 Comment
  UC666862  Rubus parviflorus Joseph P. Tracy 1933-6-7 12524 Humboldt Bridgeville 198 Comment
  SEINET4948924  Rubus parviflorus Unknown 1938-8-6 15397 Humboldt Eureka Comment
  CAS-BOT-BC156725  Rubus spectabilis Doris K. Kildale 1927-4-10 3081 Humboldt Prairie Creek, between Orick & Requa Comment
  CHSC59811  Rubus spectabilis Jordan Detzer 1977-4-8 6 Humboldt South end of Patrick's Point State Park, ca 0.2 mi west of Hwy 101 and 5 mi north of Trinidad. 60 Comment
  HSC37377  Rubus spectabilis Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 503 Humboldt Along Lost Man Creek. 38 Comment
  HSC96515  Rubus ursinus Gordon Leppig 1998-5-11 762 Humboldt Big Lagoon County Park. 3 Comment
  RSA183575  Rubus ursinus R. I. Bonn 1965-4-23 19 Humboldt 4 miles W of Arcata on Lanphere Rd. Comment
  SEINET5710899  Rudbeckia occidentalis Lowell E. Urbatsch 1990-1 6799 Humboldt From Calif. 99 at Hawkins Bar (in Trinity County), turn onto the road to Denny and travel 1.7 miles down this road to a fork; take the left fork (not leading to Denny but to Waterman Ridge and Zeigler Point) and travel 6.7 miles down this road to another fork. Take the rt. fork (away from the rd. leading to Waterman Ridge and Willow Creek). On this rd. (FD 7 NO4) travel 1.5 miles to another fork; continue on 7No4N (the left fork) for 7.4 miles. At this point, take 7NO4N, the rd to Groves Prairie. The collection site is about 50m to the right near the Groves Prairie Creek sign. The site is 17.9 miles from Hawkins Bar just beyond mile marker 9.; Groves Prairie Comment
  UC146145  Rumex J. P. Tracy 1906-8-18 2543 Humboldt immediate vicinity Eureka 0 Comment
  HSC55080  Rumex acetosella G. L. Clifton, Griswold 1979-7-31 11715 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC73450  Rumex acetosella Gail Newton 1980-7-14 1467 Humboldt Near Last Chance Ridge. 1219 Comment
  JEPS39894  Rumex acetosella Lincoln Constance 1934-6-3 807 Humboldt n side Redwood Hwy. (at Dyerville); South Fork Eel River, Bull Creek Region, Dyerville Comment
  UCD100980  Rumex acetosella Linda M. Barker 1976-5-13 1483 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD81680  Rumex acetosella Chuck Hughes 2009-6-18 100 Humboldt Near Arcata. NE corner of intersection of Old Samoa Road and Pacheco Road. 1 Comment
  HSC17565  Rumex acetosella J. W. Johnson 1962-4-8 1223 Humboldt Arcata, Mad River Co. Park Comment
  HSC17576  Rumex acetosella W. F. Nickel 1965-4-22 Humboldt HSC campus behind biological science building Comment
  HSC36232  Rumex acetosella John Rehling 1975-5-7 62 Humboldt Along Alliance Rd. Comment
  HSC64435  Rumex acetosella J. P. Smith, Steve Selva 1970-6-30 4101 Humboldt 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
  HSC36319  Rumex persicarioides Thomas W. Nelson 1975-8-10 2242 Humboldt At Shively Comment
  UC722995  Rumex salicifolius var. crassus C. L. Hitchcock and J. S. Martin 1939-7-14 5438 Humboldt Shelter Cove Comment
  HSC17821  Ruppia cirrhosa Jerry Parker 1968-10-26 212 Humboldt Big Lagoon County Park, Big Lagoon Comment
  JEPS385  Ruppia maritima Joseph P. Tracy 1938-7-15 16079 Humboldt Mouth of Eel River 3 Comment
  HSC4147  Sagina apetala W. L. Jepson 1921-8-7 9337 Humboldt Stone Lagoon Comment
  HSC93476  Salicornia depressa Gordon Leppig 1998-8-6 995 Humboldt Arcata Marsh and Wildlife Sanctuary; Humboldt Bay side of Klopp Lake dike 2 Comment
  POM182024  Salix eastwoodiae Joseph P. Tracy 1932-7-16 10647 Humboldt McKay Meadow. Tinity summit. Klamath Mountains. 1524 Comment
  CAS-BOT-BC103816  Salix exigua M. S. Jussel 1931-5-2 s.n. Humboldt Eureka Comment
  POM219693  Salix exigua H. E. Parks 1931-5-14 958 Humboldt Fernbridge. Eel River. 10 Comment
  CAS-BOT-BC104101  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0968 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC104113  Salix hindsiana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-17 01335 Humboldt above Trinity River, 1 mile below bridge on Trinity Highway 152 Comment
  CAS-BOT-BC106858  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 01207 Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad Comment
  CAS-BOT-BC107716  Salix hookeriana Doris K. Kildale 1926-7-11 2364 Humboldt Mouth of Bear River - Capetown Comment
  CAS-BOT-BC107764  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1214 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  CHSC9655  Salix hookeriana E. L. Smith 1971-8-18 1025 A Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  HSC19969  Salix hookeriana H. E. Parks Sep 1931 1057 Humboldt Trinidad 76 Comment
  HSC40861  Salix hookeriana Linda M. Barker 1976-4-13 1382 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC90382  Salix hookeriana Jean Hanson 1980-3-8 1 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  RSA152331  Salix hookeriana Joseph P. Tracy 1948-4-4 17958 Humboldt Near Samoa on Humboldt Bay. 6 Comment
  UC1173622  Salix hookeriana Joseph P. Tracy 1936-10-24 15203 Humboldt Fortuna Eel River (banks of river) 15 Comment
  UC1196629  Salix hookeriana Joseph P. Tracy 1919-3-23 5121 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC1225926  Salix hookeriana Joseph P. Tracy 1947-6-28 17754 Humboldt Bridgeville Van Duzen River 198 Comment
  UC469110  Salix hookeriana Joseph P. Tracy 1931-8-23 9618 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC469116  Salix hookeriana Joseph P. Tracy 1927-3-13 7844 Humboldt mouth of Little River; Northern Coast Ranges, Little R. 6 Comment
  UC470435  Salix hookeriana Joseph P. Tracy 1931-10-18 9742 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  UC490459  Salix hookeriana Joseph P. Tracy 1932-5-10 9950 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC492335  Salix hookeriana Harold E. and Susan T. Parks 1932-4-10 1102 Humboldt Little River Lagoon Trinidad Comment
  UC506401  Salix hookeriana Joseph P. Tracy 1933-4-9 10931 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (below Blue Slide bridge on open gravel bar) 91 Comment
  UC512094  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1215 Humboldt 1 mi n Samoa (pine barrens near coast) Comment
  UC518895  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 9 Humboldt Samoa Comment
  UCD111020  Salix hookeriana Carleton R. Ball; Harold E. Parks and Joseph P. Tracey 1932-5-11 01210 a Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad. Comment
  JEPS12977  Salix laevigata Joseph P. Tracy 1931-10-18 9737 Humboldt on Eel River Camp Grant; Northern Coast Ranges 60 Comment
  UCSB10870  Salix lasiandra Parks, Harold; Parks, Susan 1931-8-15 Humboldt Blue Slide, Van Duzen River 100 Comment
  UC490524  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1932-4-17 9797 Humboldt Alton to Fortuna (Eel R.); Northern Coast Region, Eel R. 15 Comment
  UC492483  Salix lasiandra subsp. lasiandra Harold E. and Susan T. Parks 1932-5-12 1150 Humboldt near bridge at mouth of Maple Creek (Big Lagoon); Big Lagoon Comment
  CAS-BOT-BC125220  Salix lasiandra var. lasiandra Joseph P. Tracy 1933-7-16 12772 Humboldt South Fork Mountain; at McKay Camp 1676 Comment
  CAS-BOT-BC128196  Salix lasiandra var. lasiandra Doris K. Kildale 1926-3-7 1528 Humboldt Stephen's Grove, river bar - South Fork of Eel River 60 Comment
  CAS-BOT-BC107576  Salix lasiolepis Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107596  Salix lasiolepis Harold E. Parks; Joseph P. Tracy 1933-3-19 11006 Humboldt On Van Duzen River, two miles west of Bridgeville 228 Comment
  CAS-BOT-BC107625  Salix lasiolepis Joseph P. Tracy 1934-3-25 13167 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107643  Salix lasiolepis Joseph P. Tracy 1933-4-2 10960 Humboldt On open grassy slope of Berry's Mountain, on Trinity Highway, east of Redwood Creek 762 Comment
  CHSC9648  Salix lasiolepis E. L. Smith 1971-8-17 1019 Humboldt On the Van Duzen River ca. 18 mi s of Eureka. Comment
  HSC98523  Salix lasiolepis Cara Witte 2007-7-3 409 Humboldt White Oak Opening. 1242 Comment
  JEPS12924  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1933-3-19 11007 Humboldt 2 mi w Bridgeville (near Big Rock); Northern Coast Ranges 182 Comment
  JEPS13095  Salix lasiolepis Joseph P. Tracy 1936-10-17 15200 Humboldt on Van Duzen River Blue Slide 91 Comment
  POM219355  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt Redwood Creek, at Berry's 274 Comment
  UC1196620  Salix lasiolepis Joseph P. Tracy 1926-9-19 7803 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC1196656  Salix lasiolepis Joseph P. Tracy 1920-8-15 5387 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  UC469412  Salix lasiolepis Joseph P. Tracy 1927-4-10 7887 Humboldt Redwood Creek, at Berry's 274 Comment
  UC469424  Salix lasiolepis Joseph P. Tracy 1931-8-16 9614 Humboldt vicinity of Garberbille; Northern Coast Ranges 121 Comment
  UC481339  Salix lasiolepis Harold E. Parks 1931-10-15 1076 Humboldt Bishop Pine Lodge Trinidad; , Bishop Pine Lodge 75 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
  UC490584  Salix lasiolepis Joseph P. Tracy 1932-6-4 10128 Humboldt Bridgeville 228 Comment
  UC519339  Salix lasiolepis Joseph P. Tracy 1933-5-14 12177 Humboldt Willow Creek Trinity River Valley (mouth) 152 Comment
  CDA39553  Salix lasiolepis Gordon Leppig 1999-4-15 1116 Humboldt Big Lagoon County Park; Big Lagoon Bog. Comment
  CAS-BOT-BC107403  Salix lasiolepis var. lasiolepis Doris K. Kildale 1928-4-29 5958 Humboldt Redwood Creek at Berry's 289 Comment
  POM220145  Salix lucida subsp. lasiandra H. E. Parks, Joseph P. Tracy 1931-5-17 966 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  CAS-BOT-BC125614  Salix melanopsis Doris K. Kildale 1925-6-27 765 Humboldt Yager Creek - near mouth 30 Comment
  CAS-BOT-BC125629  Salix melanopsis Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-13 01252 Humboldt On floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  JEPS12936  Salix melanopsis Joseph P. Tracy 1931-5-3 9344 Humboldt Mad River near Blue Lake; Northern Coast Region 15 Comment
  UC469446  Salix melanopsis Joseph P. Tracy 1931-5-3 9343 Humboldt Mad R. near Blue Lake; Northern Coast Region, Mad R. 15 Comment
  UC469461  Salix melanopsis Joseph P. Tracy 1931-10-3 9704 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC481341  Salix melanopsis Harold E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge Trinidad 75 Comment
  UC490561  Salix melanopsis Joseph P. Tracy 1932-5-1 9876 Humboldt vicinity of R. Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  NY284121  Salix parksiana H. E. Parks 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  RSA0030801  Salix parksiana H. E. Parks 1931-5-14 0961 Humboldt Ban Duzen River between Alton and Carlotta 15 Comment
  CAS-BOT-BC129206  Salix piperi Doris K. Kildale 1928-3-27 4360 Humboldt Freshwater Comment
  CAS-BOT-BC129136  Salix scouleriana Joseph P. Tracy 1932-7-17 10694 Humboldt Rocky exposed places, head of Devil's Hole - Trinity Summit, Klamath Mountains 1828 Comment
  CAS-BOT-BC129158  Salix scouleriana Joseph P. Tracy 1937-3-21 15238 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  CAS-BOT-BC129166  Salix scouleriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1219 Humboldt Near the coast, 1 mile north of Samoa, approximately at sea level. Comment
  HSC55742  Salix scouleriana G. L. Clifton, Griswold 1979-7-26 10252 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  HSC98583  Salix scouleriana Cara Witte 2008-7-25 938 Humboldt Forest Service Road 5N10. Approximately 1/2 mile north of intersection with Forest Service Road 5N10C. 1324 Comment
  POM219539  Salix scouleriana H. E. Parks 1931-5-12 951 Humboldt Bishop Pine Lodge. 150 Comment
  SBBG28832  Salix scouleriana H. E. Parks 1931-5-12 955 a Humboldt Samoa, Humboldt Bay Comment
  UC1173627  Salix scouleriana Joseph P. Tracy 1936-2-2 14766 Humboldt vicinity of Carlotta 30 Comment
  UC1196693  Salix scouleriana Joseph P. Tracy 1924-1-20 6597 Humboldt near bay shore Samoa (around Humboldt Bay); Northern Coast Region, Humboldt Bay 3 Comment
  UC1196701  Salix scouleriana J. P. Tracy 1900-12-22 974 Humboldt immediate vicinity Eureka 0 Comment
  UC1196706  Salix scouleriana Joseph P. Tracy 1933-12-24 13132 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  UC249646  Salix scouleriana Joseph P. Tracy 1923-1-7 6136 Humboldt Table Bluff Northern Coast Ranges, Table Bluff 91 Comment
  UC490540  Salix scouleriana Joseph P. Tracy 1932-7-20 10739 Humboldt on trail below Corral Prairie; Klamath Mts., Trinity Summit 1371 Comment
  UC506351  Salix scouleriana Joseph P. Tracy 1933-4-2 10956 Humboldt Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 304 Comment
  UC512016  Salix scouleriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1227 Humboldt pine barrens near coast 1 mi. n. Samoa Comment
  UC525977  Salix scouleriana H. E. Parks 1933-1-24 1353 Humboldt Spruce Cove (Parks Ranch) Trinidad; , Spruce Cove (Parks Ranch) Comment
  UCD111733  Salix sessilifolia Carleton R. Ball; Harold E. Parks, and Joseph P. Tracey 1932-5-12 01245 Humboldt Van Duzen River at Blue Slide. 91 Comment
  CAS-BOT-BC128988  Salix sitchensis Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-12 1230 Humboldt Floodplain of the Van Duzen River, 1 1/2 miles east of Alton 30 Comment
  CAS-BOT-BC128999  Salix sitchensis Harold E. Parks 1931-3-26 906 Humboldt Alton, on Van Duzen River 15 Comment
  HSC37880  Salix sitchensis Thomas W. Nelson 1976-3-22 2282 Humboldt Cooper's Gulch near Franklin Elementary School Comment
  HSC38183  Salix sitchensis Thomas W. Nelson, James Nelson 1976-3-5 3283 Humboldt Along S fork of Martins Slough just upstream from Eureka Muni Golf Course Comment
  UC1225921  Salix tracyi Joseph P. Tracy 1942-4-26 17071 Humboldt near Blue Lake, along Mad River 15 Comment
  CDA5800  Salpichroa origanifolia J. Sievert 1981-9-24 s.n. Humboldt Elk River Road, 0.1 mile east of junction with Ridgewood Drive behind Wonnacott Kennels, 6101 Elk River Road. 0 Comment
  POM118790  Sambucus callicarpa Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC177248  Sambucus mexicana Joseph P. Tracy 1912-7-26 3836 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  SFV18554  Sambucus racemosa W. Coleman, B. Hammer, J. Radtke 1998-3-20 954 Humboldt Arcata marsh. 3 Comment
  UC484082  Sambucus racemosa var. racemosa C. B. Wolf 1930-10-26 1765 Humboldt along coastal bluffs 1 mi s Trinidad 91 Comment
  CAS-BOT-BC235128  Sambucus racemosa var. racemosa Duncan Dunning 1921-10-2 37285 Humboldt Bulwinkle [Bullwinkle] Comment
  UC154131  Sanicula bipinnatifida Joseph P. Tracy 1909-8-1 3056 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC32851  Sanicula crassicaulis Thomas W. Nelson, Jane P. Nelson 1973-5-28 943 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC39448  Sanicula crassicaulis Linda M. Barker 1976-8-2 1669 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  HSC89601  Sanicula crassicaulis M. Roantree 1985-4-28 16 Humboldt W side of Trinidad Head, along trail Comment
  RSA254741  Sanicula crassicaulis Thomas W. Nelson, James Nelson 1973-5-28 943 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC1022532  Sanicula crassicaulis C. Ritchie Bell 1952-5-3 3 X452 Humboldt 4.4 mi e of Bridgeville (below road) Comment
  HSC74223  Sanicula graveolens M. A. Baker 1980-7-19 3016 Humboldt Near Bret Hole. 1814 Comment
  UC642283  Sanicula laciniata Joseph P. Tracy 1935-5-25 13907 Humboldt Dobbyn Creek 152 Comment
  UCD128031  Sanicula laciniata R. N. Raynor 1935-3-2 s.n. Humboldt Fort Seward. Comment
  JEPS98672  Sanicula tracyi M. Garcia, O. Gomez, C. Martin and P. Vargas 1996-5-25 32 -96 Humboldt Dismore, ca. 3 mi on Buck Mountain road from the junction with the main road Comment
  HSC69867  Sanicula tuberosa Thomas W. Nelson 1978-5-28 4095 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  HSC100652  Saxifraga mertensiana Carl C. Marshall May 1886 189 Humboldt Damp rocks. Comment
  HSC26675  Scandix pecten-veneris Thomas W. Nelson 1971-5-9 431 Humboldt Hwy. 36 opposite Goat Rock, 2 mi. W of Bridgeville Comment
  CHSC84743  Schoenoplectus acutus var. occidentalis L. P. Janeway 2003-7-27 7926 Humboldt North Coast. Edge of marsh on south side of southwest end of Hwy 101 causeway across Big Lagoon. 2 Comment
  SEINET3991334  Scoliopus bigelovii Unknown 1941-4-26 16862 Humboldt Kneeland Prairie 762 Comment
  SEINET12058059  Scoliopus bigelovii F. H. Utech 1988-3-4 88 -026 Humboldt 12.7 mi E on CA 36 from jct US 101 & Van Duzen River, Grizzly Creek Redwoods, O.R. Cheatam Grove 90 Comment
  SEINET12058060  Scoliopus bigelovii F. H. Utech 1988-3-4 88 -026 Humboldt 12.7 mi E on CA 36 from jct US 101 & Van Duzen River, Grizzly Creek Redwoods, O.R. Cheatam Grove 90 Comment
  HSC100444  Scorzonella procera Carl C. Marshall Jul 1886 263 Humboldt Bald Hills. Comment
  HSC12558  Scrophularia californica D. La Conte 1970-7-7 20 Humboldt Comment
  HSC21127  Scrophularia californica R. I. Bonn 1965-5-9 44 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC90314  Scrophularia californica Jean Hanson 1981-5-10 139 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka, W end of island Comment
  SD92951  Scrophularia californica Walter Bertsch 1953-7-30 231 Humboldt Redwood forest near Arcata on highway 101 Comment
  HSC14396  Scutellaria antirrhinoides H. E. Parks, J. P. Tracy 1934-6-27 11061 Humboldt Grouse Mtn. 1433 Comment
  HSC58326  Scutellaria antirrhinoides Overton, Butler 1979-8-2 12623 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC25792  Scutellaria antirrhinoides Harley P. Chandler June, 1901 1323 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC35621  Scutellaria antirrhinoides Thomas W. Nelson, B. Reinhardt 1975-7-30 2115 Humboldt E of Pilot Rock Comment
  RSA43682  Scutellaria antirrhinoides H. M. Pollard 1948-7-27 s.n. Humboldt Road to Red Cap Creek near Orleans. Comment
  HSC14402  Scutellaria californica H. E. Parks 1934-7-6 5118 Humboldt Iaqua-Yager Creek 762 Comment
  UC249516  Scutellaria tuberosa Joseph P. Tracy 1922-4-30 6005 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC38769  Secale cereale A. M. Montalvo, J. D. Ackerman 1975-6-10 446 Humboldt 1 mi. N of Samoa Blvd. and turnoff to Samoa Bridge, S of Manila. Along Humboldt Bay. Comment
  HSC57960  Sedum divergens G. L. Clifton, Griswold 1979-7-31 11660 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC59107  Sedum laxum subsp. heckneri M. A. Baker 1978-7-17 594 Humboldt On the N bank of the Salmon River, 5 km E of its confluence with the Klamth River Comment
  CAS-BOT-BC64703  Sedum oregonense Doris K. Kildale 1925-8-17 1221 Humboldt Trinity Summit 1828 Comment
  HSC6478  Sedum radiatum W. K. Parks Jul 1933 Humboldt S Fork Mtn. Comment
  CDA8589  Senecio bolanderi E. C. Whitney 1970-6-25 Humboldt Mountain View. 0 Comment
  HSC49795  Senecio elegans R. York 1979-5-18 300 Humboldt Stabilized dunes opposite the Louisiana Pacific mill in Samoa Comment
  UC630453  Senecio glomeratus H. E. and S. T. Parks 1937-7-1 24033 Humboldt Spruce Cove Trinidad, Spruce Cove 60 Comment
  UC1223022  Senecio glomeratus Joseph P. Tracy 1950-9-10 19360 Humboldt 1 mi n Capetown; Bear River Ridge 304 Comment
  CAS-BOT-BC364022  Senecio integerrimus var. major Doris K. Kildale 1928-5-19 5173 Humboldt Chalk Mountain Comment
  UC128622  Senecio integerrimus var. major Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5368 Humboldt near Harris Comment
  UC169342  Senecio integerrimus var. major Joseph P. Tracy and Ernest B. Babcock 1912-5-12 3632 Humboldt near Bucksport; Northern Coast Region, Eureka 0 Comment
  UC176813  Senecio integerrimus var. major Joseph P. Tracy 1913-6-17 4160 Humboldt near the summit Buck Mountain; Northern Coast Ranges 1524 Comment
  HSC102520  Senecio integerrimus var. major M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1532 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  JEPS109412  Senecio integerrimus var. ochroleucus D. W. Taylor 2004-6-24 19144 Humboldt Spike Buck Mountain, north slope. Comment
  HSC76417  Senecio jacobaea D. K. Imper 1981-7-21 888 Humboldt Near Table Bluff 38 Comment
  UCD135607  Senecio minimus R. Tofsrud 1949-7-1 s.n. Humboldt Ferndale, Wildcat grade. 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
  UCD135752  Senecio sylvaticus W. L. Colwell 1955-10-1 30 Humboldt Brush Mountain. 1066 Comment
  HSC34282  Senecio triangularis K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  SDSU2024  Sequoia sempervirens L. N. Harvey 1930-9-27 562 Humboldt Eel River Comment
  UC1184974  Sequoia sempervirens Huron H. Smith 1911-6-16 3824 Humboldt Comment
  UC333628  Sequoia sempervirens unknown Sept. 1901 Humboldt Eureka Comment
  UC64433  Sequoia sempervirens H. M. Hall 1899-10-1 Humboldt Eel River Comment
  UCD92848  Setaria viridis Don Hager 1957-9-25 s.n. Humboldt Titlow Hill, 20 miles southwest of Willow Creek. Comment
  HSC19857  Sherardia arvensis E. W. Styskel 1963-5-19 44 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  HSC26836  Sherardia arvensis Thomas W. Nelson 1970-12-5 320 Humboldt Near Azalea Park Reserve, McKinelyville Comment
  HSC102927  Sidalcea M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 885 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC205577  Sidalcea malachroides F. H. Utech 1986-5-23 86 -399 Humboldt Ca. 3.0 mi NW of Petrolla on Mattole Road (Humboldt Co. hwy F3C) enroute to Capetown 80 Comment
  HSC100702  Sidalcea malachroides Carl C. Marshall Jun 1886 29 Humboldt Mad River region. Comment
  RSA46866  Sidalcea malviflora subsp. patula Doris K. Kildale 1927-7-10 s.n. Humboldt Gans Prairie, Bald Mountain Comment
  POM160836  Sidalcea oregana subsp. eximia Joseph P. Tracy 1920-7-25 5344 Humboldt Dows Prairie 61 Comment
  HSC57901  Sidalcea oregana subsp. spicata Gilbert Muth 1979-7-31 11492 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  UC1198362  Silene californica Joseph P. Tracy 1898-7-13 267 Humboldt near Hydesville; Northern Coast Region, near Hydesville 60 Comment
  RSA46875  Silene californica Doris K. Kildale 1927-7-22 3816 Humboldt Lasseck s Peaks Comment
  UC8435  Silene campanulata subsp. campanulata Bolander 1866-1 6517 Humboldt Red Mountain Comment
  CAS-BOT-BC174880  Silene campanulata subsp. glandulosa Joseph P. Tracy 1930-7-18 9032 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  HSC98675  Silene campanulata subsp. glandulosa Cara Witte 2007-6-26 353 Humboldt Horse Mountain Botanical Area. Junction of 6N36 and 6N36A. 1388 Comment
  HSC4183  Silene gallica H. E. Parks, S. T. Parks Jun 1936 5634 Humboldt Spruce Cove, Trinidad Comment
  RSA46893  Silene gallica Doris K. Kildale 1927-5-15 3166 Humboldt Cape Mendocino Comment
  HSC90243  Silene gallica Jean Hanson 1980-5-24 57 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  JEPS51213  Silene grayi Joseph P. Tracy 1935-7-28 14319 Humboldt head of Devil's Hole Trinity Summit, head of Devil's Hole 1828 Comment
  UC183561  Silene hookeri Joseph P. Tracy 1913-6-20 4234 Humboldt nw slope Buck Mountain (lower foothills); Northern Coast Ranges, lower foothills Buck Mountain 762 Comment
  CAS-BOT-BC181243  Silene hookeri subsp. bolanderi Tom Jimerson 1983-5-26 s.n. Humboldt Lower Trinity Road, roadside cutbank on the road to Brush Mountain Lookout off Friday Ridge Rd. - Six Rivers National Forest Comment
  HSC4166  Silene laciniata subsp. californica J. Wendell Howe 1933-6-12 1208 Humboldt Near Willow Creek Comment
  UC1198791  Sisymbrium altissimum Joseph P. Tracy 1929-8-18 8660 Humboldt on Van Duzen River, Dinsmore's Ranch, opposite Buck Mountain Van Duzen River; Northern Coast Ranges, , Dinsmore's Ranch 670 Comment
  UC552236  Sisymbrium officinale Joseph P. Tracy 1933-8-22 12976 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC1198796  Sisymbrium officinale Joseph P. Tracy 1932-7-17 10658 Humboldt Trinity Summit at Corral Prairie Corral Prairie; Klamath Mountains, Trinity Summit, Corral Prairie 1524 Comment
  RSA246759  Sisyrinchium bellum Robert F. Thorne, Percy C. Everett 1965-8-9 35302 Humboldt Big Lagoon. 3 Comment
  HSC62981  Sisyrinchium californicum David Wheeler 1979-5-22 129 Humboldt Samoa, intersection of Samoa Blvd. and the railroad tracks near Arcata Redwood Co. Comment
  HSC12029  Solanum americanum D. Santana 1970-11-2 94 Humboldt 3 mi. S of Trinidad on old Hwy. 1 Comment
  RSA337440  Solanum laciniatum Robert F. Thorne, Percy C. Everett 1965-8-5 35160 Humboldt Samoa Dunes. 3 Comment
  HSC73842  Solanum parishii Gail Newton 1980-6-7 137 Humboldt Near Brush Mtn. 1128 Comment
  HSC57941  Solidago elongata G. L. Clifton, Griswold 1979-7-31 11610 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC175192  Solidago elongata Joseph P. Tracy 1913-9-9 4397 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  SEINET11382898 Image available Solidago elongata H. E. Parks 1931-1 1056 Humboldt Trinidad, Humboldt County. Comment
  HSC40262  Solidago spathulata Linda M. Barker 1976-8-2 1670 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  LA204223  Solidago spathulata Carl Epling; Mrs. Epling 1935-8-15 sn Humboldt Arcata Spit Comment
  RSA254746  Solidago spathulata Thomas W. Nelson 1971-11-11 598 Humboldt At the foot of Murray Road, McKinleyville. Comment
  SEINET5506402 Image available Solidago spathulata S. K. Harris 1939-1 s.n. Humboldt Samoa Comment
  CAS-BOT-BC364967  Solidago velutina subsp. californica Henry M. Pollard 1945-9-1 s.n. Humboldt Road to Camp Creek, Klamath River Canyon Comment
  CAS-BOT-BC365810  Soliva sessilis Joseph P. Tracy 1936-6-3 14852 Humboldt Along path near house. Trinity River Valley, at Willow Creek 152 Comment
  HSC26465  Sonchus asper T. O. Osborne 1970-7-18 24 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  CAS-BOT-BC374596  Sonchus oleraceus F. J. Kirby 1958-7-1 s.n. Humboldt West of Bridgeville 152 Comment
  HSC40944  Sonchus oleraceus Linda M. Barker 1976-6-1 1546 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC6223  Sonchus oleraceus J. W. Johnson 1962-4-8 1216 Humboldt Arcata, Mad River Co. Park Comment
  HSC89465  Sonchus oleraceus P. A. Daly 1986-3-12 69 Humboldt Trinidad Head, along trail 61 Comment
  HSC102588  Sorbus scopulina M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1575 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC466715  Sorbus scopulina Mrs. Manning 1900-1 Humboldt Mt. Hupa Trinity Summit Comment
  UC198647  Sparganium emersum var. emersum Joseph P. Tracy 1917-5-30 4808 Humboldt near mouth of Little River; Northern Coast Ranges 6 Comment
  UC302160  Sparganium emersum var. emersum Joseph P. Tracy 1926-8-22 7771 Humboldt pond between Little Van Duzen River and Dinsmore's; Northern Coast Ranges 670 Comment
  CHSC85475  Spartium junceum Spadoni 2002-6-26 P 070828 Humboldt Along country road in the vicinity of Garberville. Comment
  CAS-BOT-BC389920  Spergula arvensis Doris K. Kildale 1925-12-6 1820 Humboldt Orick, near mouth of Redwood Creek Comment
  HSC4239  Spergula arvensis Francis Winter 1960-2-28 Humboldt Samoa Peninsula 6 mi. W of Arcata, Ca Comment
  HSC4241  Spergula arvensis S. R. Johnson 1965-3-14 2 Humboldt 1.5 mi N of Luffenholtz Beach 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
  HSC90396  Spergularia macrotheca Jean Hanson 1980-8-28 118 Humboldt Indian (Gunther) Island. In Humboldt Bay, city of Eureka. Across from the Guard Station. Comment
  HSC69752  Spergularia rubra Thomas W. Nelson 1977-10-10 3755 Humboldt Jct. of Fairway Dr. and Lundbar Place, Eureka Comment
  CAS-BOT-BC149613  Spiraea douglasii Malcom A. Nobs; S. Galen Smith 1949-8-9 1226 Humboldt 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley Comment
  HSC19753  Spiraea douglasii Paul Shields 1955-10-7 Humboldt Essex Pond, near Fieldbrook Comment
  JEPS63052  Stachys ajugoides var. rigida Joseph P. Tracy 1934-7-18 13455 Humboldt Grouse Mountain North Coast Ranges 1615 Comment
  UCLA71395  Stachys ajugoides var. rigida M. S. Jussel 1931-5-2 Humboldt Sylvandale Comment
  SEINET10499253  Stachys chamissonis H. Lewis 1940-7-3 Lewis s.n. Humboldt Little river beach state park Comment
  HSC49033  Stachys mexicana Patricia Shesgreen 1978-5-5 68 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  HSC14416  Stachys mexicana D. E. Anderson 1961-8-11 1727 Humboldt E of Humboldt State College campus. 30 Comment
  RSA20782  Stachys rigida subsp. rigida Carl B. Wolf 1937-8-13 9246 Humboldt North Coast Range 11 mi. E. of Hoopa Valley on New Road towards Trinity Summit. 1524 Comment
  HSC57939  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-7-31 11606 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC1223445  Stellaria crispa Joseph P. Tracy 1950-7-15 19042 Humboldt near mouth of Raccoon Creek (Willow Creek vicinity, 1 mi ne of Patterson's Ranch); Willow Creek Comment
  UC161059  Stellaria crispa Joseph P. Tracy 1901-4-26 1048 Humboldt Humboldt Hill Northern Coast Region, Humboldt Bay Region (Humboldt Bay Region) 0 Comment
  HSC40302  Stellaria media Linda M. Barker 1976-4-30 1396 Humboldt 3 mi. W of Arcata Comment
  UC1197797  Stenanthium occidentale Joseph P. Tracy 1948-9-5 18172 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC204744  Stephanomeria elata Joseph P. Tracy 1918-7-5 5034 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  HSC40316  Stipa lemmonii Thomas W. Nelson 1976-7-9 2994 Humboldt Along ridge S of the E peak of the Lassic Peak (Signal Peak) group 1707 Comment
  HSC58058  Streptanthus tortuosus G. L. Clifton, Terry Griswold 1979-8-1 11928 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC668050  Streptanthus tortuosus Joseph P. Tracy 1937-7-2 15399 Humboldt on ridge 2 mi e Grove's Prairie (rocky bank in open); Trinity Summit 1524 Comment
  UC492252  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1932-7-12 10457 Humboldt head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  HSC102058  Streptopus amplexifolius M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 963 Humboldt Rustic Camp, northwest of Patterson Meadows Comment
  HSC32139  Streptopus amplexifolius D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5606 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC17768  Stuckenia pectinata J. P. Tracy 1934-7-20 13462 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC269566  Symphoricarpos albus var. laevigatus E. A. McGregor 1921-8-2 s.n. Humboldt Requa and vicinity. 6 miles E. up Klamath River on Terwah Road Comment
  UC1585428  Symphoricarpos albus var. laevigatus R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 26 Humboldt sw of Hoopa (on Bair Rd, at Pine Ridge Summit); Pine Ridge Summit 970 Comment
  JEPS13644  Symphoricarpos mollis Joseph P. Tracy 1930-7-16 8956 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC99165  Symphyotrichum chilense Carl B. Wolf 1927-8-29 1201 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge, Mt. Glen Comment
  CHSC10151  Symphyotrichum chilense J. W. Johnson 1961-8-23 1048 Humboldt Arcata. Along the sides of the Lanphere County Road by Mad River Slough. Comment
  HSC36040  Symphyotrichum chilense Thomas W. Nelson 1975-9-24 2199 Humboldt Beside Indianola Rd., ca. 1/2 mi. E of its junction with Hwy. 101 Comment
  HSC5095  Symphyotrichum subspicatum D. E. Anderson 1961-9-9 1790 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon. Comment
  JEPS9924  Synthyris reniformis Joseph P. Tracy 1922-4-30 6039 Humboldt along road between three creeks and mouth of Willow Creek; Northern Coast Ranges, Brannan Mountain 914 Comment
  CHSC1902  Synthyris reniformis var. cordata H. Mapes 1953-3-9 Humboldt Comment
  UC1173660  Tanacetum balsamita Joseph P. Tracy 1939-9-15 16500 Humboldt Eureka Comment
  CAS-BOT-BC376722  Tanacetum bipinnatum Paul F. Covel 1939-8-7 1636 Humboldt Beach at Little River Comment
  SEINET3816619  Tanacetum parthenium Joseph P. Tracy 1946-7-28 17624 Humboldt Head of willow creek Comment
  SBBG65851  Tanacetum vulgare L. Rowntree -Jul-1931 Humboldt near Ferndale Comment
  RSA167250  Taraxacum laevigatum Joseph P. Tracy 1951-6-24 19542 Humboldt Ashfield Ridge 762 Comment
Read comments
Aug 15 2009
  CAS-BOT-BC376895  Taraxacum officinale Doris K. Kildale 1926-5-24 1683 Humboldt Ryan Slough near Occidental Ranch Comment
  RSA167403  Taraxacum officinale Joseph P. Tracy 1948-5-15 s.n. Humboldt Trinity River at Willow creek Comment
  HSC67525  Tauschia kelloggii J. M. DiTomaso 1981-4-12 1999 Humboldt Chezem Rd., 23 mi. E of Hwy. 101off Hwy. 299 Comment
  JEPS14252  Tauschia kelloggii Joseph P. Tracy 1936-6-10 14933 Humboldt mountain slopes w mouth South Fork of Trinity River; w of mouth South Fork of Trinity River 457 Comment
  HSC38097  Taxus brevifolia Thomas W. Nelson, James Nelson 1976-5-30 2619 Humboldt McKeown Ranch, N of Dinsmore. Comment
  POM117233  Tellima grandiflora Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  RSA183511  Tellima grandiflora D. E. Anderson 1965-5-8 3629 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along highway 299. Comment
  UC56716  Tellima grandiflora Harley P. Chandler May 1901 1232 Humboldt Humboldt Bay; North Coast Ranges 121 Comment
  UC60906  Thermopsis gracilis unknown Humboldt Hoopa Valley Comment
  SEINET6934811  Thermopsis macrophylla var. venosa Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt West of top of grade down to Klamath River, southeast of Orick. Comment
  HSC95903  Thuja plicata Will Ferrand 2001-6-17 2 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  NY17205  Thuja plicata A. Kellogg 1868-1 933 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY17208  Thuja plicata L. S. Rose 1926-6-26 66039 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA352355  Thuja plicata J. P. Smith, AdvancedPlantTaxonomyClass 1971-10-9 5021 Humboldt Mad River above the Fish Hatchery. Comment
  UCD134111  Thuja plicata Jo Ann Olson; Gary R. Robbins 1969-4-27 36 Humboldt On Mattole Road, ca. 1 mile south of Ferndale. 152 Comment
  UC1225754  Thysanocarpus curvipes Joseph P. Tracy 1948-5-31 18005 Humboldt Harris 762 Comment
  HSC99404  Tiarella trifoliata var. unifoliata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 53 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UCR124075  Tiarella trifoliata var. unifoliata George K. Helmkamp, E. A. Helmkamp 2001-7-8 6971 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
  UCR64482  Tiarella trifoliata var. unifoliata Lyman Benson 1928-7-11 454 Humboldt Dyerville, Bull Creek, S. Fork Eel River, Bull Creek Flat. 120 Comment
  UC64644  Tiarella trifoliata var. unifoliata H. M. Hall 1899-9 Humboldt Redwood forests along Eel River; along Eel River Comment
  UC154080  Tolmiea diplomenziesii J. P. Tracy 1900-5-30 832 Humboldt immediate vicinity Eureka 0 Comment
  HSC60125  Tolmiea diplomenziesii M. A. Baker 1978-5-20 556 Humboldt Hoopa Indian Reservation Comment
  UC169095  Tonella tenella Mrs. M. H. Manning Apr 1902 Humboldt Hupa Comment
  UC444981  Tonella tenella Mrs. M. H. Manning May 1902 Humboldt near Hupa Comment
  UCR45380  Tonella tenella Barry Silver 1986-4-23 518 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  BLMAR228  Torilis arvensis Jennifer Anthony-Wheeler 1996-7-11 228 Humboldt N.Dobbyn creek, growing in understory of mixed evergreen forest 1005 Comment
  UCR3932  Toxicodendron diversilobum David Whistler, H. M. Whistler 1964-7-29 640729- 7 Humboldt North Coast, US Hwy 101, along bank of Eel River, 0.2 mi. north of Weott 85 Comment
  SEINET185707  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1937-7-2 15387 Humboldt Happy Camp Mountain; In Trinity Range, Northeast of Hawkins Bar. 1280 Comment
  HSC56957  Triantha occidentalis subsp. occidentalis Overton, Butler 1979-7-23 9470 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  UC484155  Trichostema laxum E. R. Johnson Aug 1929 Humboldt along the Eel River Comment
  UC577372  Trichostema oblongum Joseph P. Tracy 1927-8-27 8327 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC97554  Trientalis borealis subsp. latifolia Cara Witte 2007-6-1 168 Humboldt Horse Mountain Botanical Area. Along Forest Service Road 6N38. 1382 Comment
  HSC17941  Trientalis latifolia John A. Dubois 1962-5-12 10 Humboldt 20 mi. E of Arcata Comment
  UC16434  Trifolium bifidum var. decipiens J. Burtt Davy 1899-6-15 5526 Humboldt Scotia Comment
  UC1223483  Trifolium cyathiferum Joseph P. Tracy 1937-7-19 15458 Humboldt lower foothills northwest slope; Buck Mtn Comment
  SEINET6934955  Trifolium depauperatum var. amplectens Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  UC1103438  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1921-5-30 5481 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UCD108809  Trifolium dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt Cape Mendocino. Mouth of Domingo Creek. South of point of the Cape. Comment
  JEPS79998  Trifolium dubium Joseph P. Tracy 1925-5-17 6971 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  SD87601  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt Coast, 20 miles north of Eureka Comment
  UC179921  Trifolium dubium Joseph P. Tracy 1914-7-4 4522 Humboldt between Korbel and Angels Ranch roadside; Northern Coast Ranges Comment
  UCD108860  Trifolium dubium P. B. Kennedy 1929-6-14 10323 Humboldt Eureka. Comment
  HSC99715  Trifolium eriocephalum subsp. eriocephalum Glenn W. K. Shelton 2010-7-19 25 Humboldt Big Hill Rd., switchback in road 1256 Comment
  UC1223460  Trifolium fragiferum Joseph P. Tracy 1933-8-22 12986 Humboldt 1 mi w Loleta Comment
  RSA168898  Trifolium fragiferum Joseph P. Tracy 1933-8-22 12986 Humboldt Not seen elsewhere, moist field near wet slough 1 miles W of Loleta. Comment
  UC1562633  Trifolium fucatum Barbara Ertter with Thomas J. Delendick 1987-5-16 6932 Humboldt just w Berry Summit (Vista Point, ca 15 air mi e os Arcata, on Hwy 299) Comment
  HSC58628  Trifolium longipes Overton, Butler 1979-7-31 11447 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC199105  Trifolium longipes var. elmeri Chesnut and Drew July 1888 Humboldt S. Fork of Trinity Comment
  UC1197210  Trifolium longipes var. hansenii Joseph P. Tracy 1913-6-23 4282 Humboldt near summit of ridge (betw Van Duzen and Mad Rivers, Dinsmore's ranch); Northern Coast Ranges 1066 Comment
  JEPS65951  Trifolium microcephalum Joseph P. Tracy 1932-5-1 9893 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  HSC45138  Trifolium microcephalum R. Sutherland 1978-5-25 1 .25578 Humboldt Near the Mattole River 288 Comment
  UCD109162  Trifolium microdon Linda M. Barker 1976-6-1 1544 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET12157235  Trifolium microdon J. P. Tracy 1936-1 14840 Humboldt nr Samoa, on Humboldt Bay 6 Comment
  HSC59678  Trifolium pratense George Kirn 1977-10-1 Humboldt Eureka, open bayfront field 1/2 mi E of Hwy 255 6 Comment
  HSC58412  Trifolium repens Griswold, Butler 1979-7-12 7147 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC162779  Trifolium repens J. P. Tracy 1903-8-9 1946 Humboldt immediate vicinity Eureka 0 Comment
  HSC2148  Trifolium variegatum Elrid H. Spinas 1948-6-16 55 Humboldt Horse Mtn. Comment
  UC1223379  Trifolium variegatum var. melananthum Joseph P. Tracy 1933-5-20 12254 Humboldt near Petrolia (hills between town and ocean) Comment
  SEINET12156847  Trifolium variegatum var. pauciflorum J. P. Tracy 1935-1 13815 Humboldt at Eureka 61 Comment
  UC495678  Trifolium variegatum var. variegatum Joseph P. Tracy 1929-5-5 8571 Humboldt along South Fork of Eel River (Miranda); Northern Coast Ranges 121 Comment
  UC175673  Trifolium variegatum var. variegatum Joseph P. Tracy 1913-6-20 4232 Humboldt n w slope Buck Mtn (lower foothills); Northern Coast Ranges 762 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
  UC1223318  Trifolium willdenovii Joseph P. Tracy 1942-5-16 17358 Humboldt 1 mi ne Garberville (on rd to Harris) 304 Comment
  HSC15195  Trifolium wormskioldii J. W. Johnson 1961-8-17 1009 Humboldt Arcata, Hollow 10, W.M. Lanphere Farm, Samoa Peninsula. Comment
  CAS-BOT-BC520051  Trillium albidum Doris K. Kildale 1926-3-23 1601 Humboldt Humboldt County 21 Comment
  HSC15686  Trillium albidum W. D. Stevens 1964-5-16 16 Humboldt 1.0 mi. N of Kneeland School Comment
  HSC99729  Trillium kurabayashii K. A. Wayman 2009-2-28 269 Humboldt Redwood National Park, near Orick, along Redwood Creek Trail, 1.4 mi. from trailhead, just before trail drops down to Redwood Creek Comment
  CHSC28032  Trillium ovatum L. Greenhill 1977-4-6 12 Humboldt Abundant population 10 ft. from n side of highway 36, 1mile w from Grizzly Creek State Campground. 91 Comment
  HSC24377  Trillium ovatum J. O. Sawyer 1970-6-24 2278 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC15692  Trillium ovatum W. D. Stevens 1964-3-21 1 Humboldt 1.0 mi. E of Hwy. 299 on Lindsay Rd. Comment
  HSC15702  Trillium ovatum K. P. St. John 1965-4-24 42 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  RSA168951  Trillium ovatum Joseph P. Tracy 1950-4-20 18613 Humboldt 1 mile west of Dinsmores on Van Duzen River. Comment
  CAS-BOT-BC521312  Trillium rivale Joseph P. Tracy 1911-7-7 3413 Humboldt Brannan Mountain; Viz Ridge North of Willow Creek, between Willow and Campbell Creeks, near the summit, in pine forest; Northern Coast Ranges 1219 Comment
  SEINET10459890  Triodanis perfoliata Chandler CHANDLER 1514 Humboldt Klamath River, somes bar. 427 Comment
  UC1198036  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1911-5-30 3207 Humboldt sandy fields at Bucksport (at Eureka); Northern Coast Region 0 Comment
  HSC70581  Triphysaria pusilla Sue Sweet 1981-4-30 549 Humboldt Lanphere-Christensen Dunes Preserve, along trail N of weather station Comment
  CHSC1822  Triphysaria versicolor subsp. faucibarbata V. Holt 1941-5-30 Humboldt Comment
  JEPS10442  Triphysaria versicolor subsp. versicolor W. L. Jepson 1902-6 1919 Humboldt fields about Eureka (<Expedition from Ukiah to the Hupa Indian Reservation>); fields about Eureka Comment
  HSC58671  Trisetum cernuum Gilbert Muth 1979-8-1 12147 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC526697  Trisetum cernuum Joseph P. Tracy 1926-5-22 7502 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  SEINET10604393  Trisetum cernuum Harley P. Chandler Chandler 1176 Humboldt Humboldt Bay. 30 Comment
  HSC49994  Triteleia bridgesii M. A. Baker 1979-6-6 773 Humboldt N facing slope adjacent to rd. to Hospital Mtn. Comment
  SBBG889  Triteleia hyacinthina K. K. Muller 1954-6-21 632 Humboldt Olsen Crk, 2 mi ENE of Mad River Comment
  RSA183018  Triteleia hyacinthina Lee W. Lenz 1966-5-24 24659 Humboldt W of Berry Summit, US 299. Comment
  HSC39173  Triteleia laxa D. E. Anderson, J. P. Smith 1971-6-28 - 1229 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC13437  Triticum aestivum D. J. McVean 1965-5-16 58 Humboldt Arcata, Game Pens at H.S.U. Comment
  CAS-BOT-BC85851  Tsuga heterophylla P. C. Everett; E. K. Balls 1959-10-25 23963 Humboldt 22 mi. W. from Willow Creek along U.S. Hwy. 299 to Arcata 579 Comment
  CAS-BOT-BC85899  Tsuga heterophylla Doris K. Kildale 1927-5-13 3127 Humboldt Green Point, Redwood Creek Road Comment
  HSC28304  Tsuga heterophylla Gary S. Lester 1973-12-8 61 Humboldt E of HSC Campus Comment
  CAS-BOT-BC85894  Tsuga heterophylla L. R. Abrams 1918-6-17 7211 Humboldt Between Briar's Resort and Bald Mt. Comment
  CAS-BOT-BC73935  Turritis glabra Doris Kildale Gillespie 1931-6-7 10626 Humboldt South Fork Mountain. Blake Lookout. 1726 Comment
  HSC93497  Typha latifolia Gordon Leppig 1998-6-8 899 Humboldt Arcata Marsh and Wildlife Sanctuary, SW side of pond. 2 Comment
  JEPS65676  Ulex europaeus Joseph P. Tracy 1923-11-24 6594 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC95838  Umbellularia californica Kevin Thomas 2004-4-26 13 Humboldt Lord Ellis Summit along Titlow Hill Rd., rd. turnout Comment
  RSA168809  Umbellularia californica Joseph P. Tracy 1950-12-10 18600 Humboldt Vicinity of Carlotta. 30 Comment
  RSA46913  Umbellularia californica Doris K. Kildale 1926-1-24 1488 Humboldt Kneeland, near schoolhouse. 762 Comment
  SEINET12026866  Urtica dioica J. P. Tracy 1950-1 19369 Humboldt Klamath River, near Slate Creek, below Orleans 8 miles 122 Comment
  POM380627  Urtica dioica subsp. gracilis Lyman D. Benson 1929-7-12 1792 Humboldt Weott Ranger Station; S Fork Eel River. Comment
  HSC7945  Vaccinium membranaceum J. P. Tracy 1936-8-7 15096 Humboldt Trinity Summit, head of Little Horse-Linto Creek 1372 Comment
  HSC31471  Vaccinium ovatum Steve Selva, Roger Jensen 1974-8-28 96 Humboldt Behind Humboldt State University, Arcata. Comment
  UCD166889  Vaccinium ovatum Colleen Rossier 2016-9-17 7 Humboldt In vicinity of Natuket Creek, plot Natuket #1. 702 Comment
  CAS-BOT-BC199406  Vaccinium parvifolium Clarence R. Quick 1959-7-24 59 -35 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  JEPS58705  Vaccinium parvifolium W. L. Jepson 1902-6-24 1926 Humboldt Korbel to Angel's Ranch Comment
  OBI14438  Vaccinium parvifolium Joseph P. Tracy 1943-3-14 17410 Humboldt Vicinity of Carlotta Comment
  RSA303471  Vaccinium parvifolium J. R. Shevock 1972-3-26 1470 Humboldt Along Hwy 299. 366 Comment
  UC1197763  Vaccinium parvifolium Joseph P. Tracy 1938-6-13 15900 Humboldt Horse Mountain 1432 Comment
  UC1197780  Vaccinium parvifolium Joseph P. Tracy 1931-4-26 9341 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  SEINET12335251  Valeriana sitchensis F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -313 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  UC1239583  Valeriana sitchensis subsp. scouleri Mrs. Archie Cathey 1933-5-6 Humboldt Eel Rock 91 Comment
  HSC57141  Vancouveria hexandra Overton, Butler 1979-7-26 9925 Humboldt Near Willow Creek, close to the town of Willow Creek 1326 Comment
  RSA0007780  Vancouveria hexandra Larry E. DeBuhr, Gary Wallace 1972-5-22 611 Humboldt Prairie Creek, Redwoods State Park, along Davidson Rd. Comment
  SD58169  Vancouveria hexandra Milo S. Baker 1923-7-16 19 Humboldt 3 miles southeast of Eureka Comment
  CAS-BOT-BC76085  Vancouveria planipetala Doris K. Kildale 1928-5-19 5204 Humboldt Chalk Mountain. Comment
  CAS-BOT-BC527423  Veratrum californicum Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Garlotta Humboldt Comment
  UC1225852  Veratrum insolitum Joseph P. Tracy 1948-8-15 18120 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  HSC102165  Veratrum viride M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1075 Humboldt Patterson Meadows 1566 Comment
  SD90171  Verbascum blattaria Benjamin C. Stone 1952-6-20 108 Humboldt Open woodland, 8 miles south of Garberville on U.S. 101 Comment
  UC582550  Veronica americana Joseph P. Tracy 1937-7-2 15389 Humboldt ne of Hawkins Bar (Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UCD124661  Veronica americana Malcolm A. Nobs; S. Galen Smith 1949-8-9 1227 Humboldt 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley. Comment
  HSC77338  Veronica americana L. P. Janeway 1983-4-30 238 Humboldt SE bank of creek along SW entrance to HSU campus 21 Comment
  HSC78977  Veronica peregrina subsp. xalapensis L. P. Janeway, K. Berg, Rudy Becking 1984-4-11 720 Humboldt N Spit of Humboldt Bay, BLM lands ('Coast Guard Reservation') 3 Comment
  UC147877  Veronica scutellata J. P. Tracy 1901-6-30 1196 Humboldt immediate vicinity of Eureka 0 Comment
  UC147902  Veronica serpyllifolia subsp. humifusa J. P. Tracy 1909-5-2 2958 Humboldt immediate vicinity of Eureka 0 Comment
  HSC63853  Veronica serpyllifolia subsp. humifusa M. A. Baker 1979-6-27 920 Humboldt Edge of Hoopa Indian Reservation Comment
  HSC102551  Vicia americana var. americana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1539 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC39004  Vicia americana var. americana Thomas W. Nelson, Jane P. Nelson 1976-5-31 2650 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  JEPS80004  Vicia americana var. americana Joseph P. Tracy 1935-5-26 13908 Humboldt Iaqua 609 Comment
  RSA293198  Vicia angustifolia J. P. Smith 1973-5-26 6831 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  BLMAR723  Vicia gigantea Jennifer Wheeler 2014-4-20 723 Humboldt South Spit/Mike Thompson Wildlife Area, South Jetty Rd on Table Bluff cliff face 3 Comment
  SEINET12157875  Vicia hirsuta J. P. Tracy 1944-1 17474 Humboldt slowly spreading in Eureka (same place as # 17428) Comment
  HSC77964  Vicia sativa subsp. nigra L. P. Janeway, Paul Wilson 1984-5-25 829 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  UC1197471  Vicia sativa subsp. sativa Joseph P. Tracy 1915-6-6 4651 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UC17027  Vicia sativa subsp. sativa Joseph Burtt Davy and Walter C. Blasdale 1899-5 5548 Humboldt near Scotia Comment
  HSC39995  Vicia sativa subsp. sativa J. P. Smith, J. O. Sawyer 1975-5-31 8145 Humboldt Samoa Peninsula adjacent to Redwood Workshop Area. Comment
  JEPS66196  Vicia tetrasperma Joseph P. Tracy 1916-5-31 4688 Humboldt Stitz Creek Northern Coast Ranges Eel River (along Eel River from South Fork to Scotia) 60 Comment
  CAS-BOT-BC263939  Viola adunca Alice Eastwood 1907-4-21 31 Humboldt Trinidad Comment
  UC1761536  Viola adunca Mrs. Wilder 1926-4 5432 Humboldt Carlotta, Mrs. Wilder's yard Comment
  HSC100695  Viola canina Carl C. Marshall Apr 1886 169 Humboldt Everywhere. Comment
  HSC55596  Viola cuneata Overton, Butler 1979-7-23 9407 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  CAS-BOT-BC536494  Viola glabella Doris K. Kildale 1927-3-22 2939 Humboldt North fork of Elk River Comment
  UC1762506  Viola glabella Milo S. Baker 1947-8-10 11900 Humboldt near end of forest road from Hoopa 1371 Comment
  UC183756  Viola hallii Joseph P. Tracy 1913-5-4 4046 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC1198431  Viola ocellata Joseph P. Tracy 1948-5-31 18007 Humboldt Harris 762 Comment
  UC275326  Viola palustris Joseph P. Tracy 1923-5-31 624 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  RSA168956  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1950-4-20 18607 Humboldt Dinsmore's, along Van Duzen River, opposite Buck Mountain. 762 Comment
  UC1198436  Viola sempervirens Joseph P. Tracy 1933-3-26 10938 Humboldt Big Lagoon 30 Comment
  CAS-BOT-BC203051  Vitis californica Doris K. Kildale 1926-7-25 2431 Humboldt Briceland Bridge 1/2 mi. west of Garberville Comment
  UC249594  Vitis californica Joseph P. Tracy 1922-9-3 6109 Humboldt Klamath River at Bluff Creek Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 91 Comment
  HSC9834  Vulpia bromoides W. F. Nickel 1965-3-17 Humboldt HSU campus, behind wildlife building Comment
  UC1145201  Vulpia bromoides Joseph P. Tracy 1948-6-10 18065 Humboldt Trinidad 3 Comment
  UC34061  Vulpia bromoides J. P. Tracy 1900-6-23 858 Humboldt immediate vicinity Eureka 0 Comment
  UC589843  Vulpia bromoides H. S. Yates 1936-6-18 5732 Humboldt Big Lagoon; Rocky Pt. Quad. 1 Comment
  HSC47614  Vulpia microstachys J. P. Smith 1977-4-23 9030 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC97933  Vulpia microstachys var. ciliata Cara Witte 2007-6-19 298 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1393 Comment
  UC1145197  Vulpia microstachys var. ciliata Joseph P. Tracy 1936-7-5 15038 Humboldt Grouse Mountain 1524 Comment
  UC1145192  Vulpia microstachys var. pauciflora Joseph P. Tracy 1942-6-23 17224 Humboldt 1 mi w Mud Springs; Trinity Summit 1158 Comment
  UC525648  Vulpia microstachys var. pauciflora Joseph P. Tracy 1925-5-17 6985 Humboldt near The South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC39399  Vulpia myuros D. E. Anderson, J. P. Smith 1971-6-28 - 1253 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  CAS-BOT-BC185939  Vulpia octoflora var. octoflora Joseph P. Tracy 1929-7-4 8618 Humboldt French Camp Ridge 1066 Comment
  CHSC68557  Whipplea modesta Vernon H. Oswald 1997-4-29 8356 Humboldt Humboldt Bay NWR, Hookton Slough Trail on the levee along the south side of Hookton Slough. On the edge of the trail. 0 Comment
  HSC23142  Whipplea modesta Norman Dennis 1965-6-19 127 Humboldt 0.25 mi. S and 1.0 mi. E of jct. of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 2 mi. SE of Kneeland 793 Comment
  HSC67508  Whipplea modesta J. P. Smith, J. O. Sawyer 1973-5-12 6705 Humboldt 10.4 mi. from Redwood Creek on Hoopa Rd. Comment
  SEINET10898891  Whipplea modesta Botany 1985-5-10 BOTANY s.n. Humboldt T5n,r63,sec.34,h.m.; Grays falls campground, off hwy 299, about halfway down to River on shaded slope, habitat included madrone, douglas fir, and canyon live Oak 241 Comment
  UC62449  Woodwardia fimbriata Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5437 Humboldt near Elk Prairie Comment
  BLMAR681  Wyethia angustifolia Jennifer Wheeler 2013-6-25 681 Humboldt Humboldt County, Mattole Road, north side of Capetown 202 Comment
  JEPS32067  Wyethia angustifolia Joseph P. Tracy 1935-6-23 13938 Humboldt French Camp Ridge 1066 Comment
  SEINET11799537  Wyethia angustifolia J. P. Tracy 1950-1 18739 Humboldt near Capetown, Bear River Ridge 30 Comment
  CAS-BOT-BC326976  Wyethia longicaulis Joseph P. Tracy 1938-7-7 16041 Humboldt Grouse Mountain 1524 Comment
  UC1199272  Wyethia longicaulis Joseph P. Tracy 1934-6-14 13218 Humboldt Horse Mountain 1371 Comment
  UC1223296  Xanthium spinosum Joseph P. Tracy 1943-11-28 17452 Humboldt river bar at mouth Van Duzen River (near Alton); Eel River 91 Comment
  UC673078  Xanthium strumarium Joseph P. Tracy 1940-10-5 16747 Humboldt Trinidad 3 Comment
  SD51273  Xerophyllum tenax Darley F. Howe 1961-8-2 3123 Humboldt 24 miles east of Orick, on Bald Mountain Road. Comment
  UC1225857  Xerophyllum tenax Joseph P. Tracy 1947-7-9 17862 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC527077  Xerophyllum tenax Joseph P. Tracy 1937-8-15 15665 Humboldt French Camp 1066 Comment
  HSC12015  Zeltnera muehlenbergii Wilbur Peterson 1970-10-31 102 Humboldt Scotia Bluffs, edge of Eel River Comment
  HSC8417  Zeltnera muehlenbergii Paul Shields Jul 1955 Humboldt 3 mi. S of Myers Flat Comment
  UC1173721  Zigadenus micranthus var. micranthus Joseph P. Tracy 1930-7-10 8872 Humboldt Brannan Mountain 1066 Comment
  UC275515  Zigadenus micranthus var. micranthus Joseph P. Tracy 1924-7-4 6521 Humboldt Valley South Yager Creek; Northern Coast Ranges, Valley South Yager Creek 762 Comment



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