Search Results — 2000 specimen records retrieved (1346 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC41313  Abies concolor Brad Klipfel 1974-9-2 543 Humboldt Horse Mountain Comment
  HSC70566  Abies concolor M. A. Baker 1980-7-23 3190 Humboldt Near Orleans Mtn. 1859 Comment
  CDA17963  Abies grandis R. Spadoni 1999-9-29 PDR 1142246 Humboldt Northern California; USFS Rd. 1, Blue Lake. 0 Comment
  UC213003  Abies grandis Joseph P. Tracy 1919-4-6 5125 Humboldt Humboldt Hill Northern Coast Region, Humboldt Bay, Humboldt Hill 152 Comment
  UC667970  Abies grandis Joseph P. Tracy 1937-6-20 15354 Humboldt 10 mi up stream from the mouth Bear River 152 Comment
  HSC55137  Abies procera G. L. Clifton, Griswold 1979-8-1 12003 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  RSA168959  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Six Rivers National Forest; Horse Trail Ridge, SW slope. 1829 Comment
  CHSC1069  Abronia latifolia 1947-6-1 Humboldt Coastal. Comment
  HSC27878  Abronia latifolia Clifton Raymond Chesbrough 1973-6-19 76 Humboldt 1/4 mi. W of the Samoa entrance to Samoa Bridge Comment
  HSC37927  Abronia latifolia Peter Sorensen 1976-5-28 Humboldt N spit Comment
  HSC59682  Abronia latifolia George Kirn 1977-10-14 Humboldt Dunes .5 mi. NW of Samoa 8 Comment
  RSA0025085  Abronia latifolia Patricia Wilder 1968-8-21 4402 Humboldt Northern coastal arm of Humboldt Bay, ca. 2 miles SW of Samoa, near bay by roadside. Humboldt Bay drainage area. 5 Comment
  RSA183640  Acer circinatum D. E. Anderson 1965-5-8 3627 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along Highway 299 Comment
  HSC79478  Acer macrophyllum Kenneth Clark 1980-3-27 563 Humboldt Upper alluvial terrace of Dead Man's Gulch 76 Comment
  HSC75508  Achillea millefolium J. O. Sawyer, R. J. Cole 1977-7-3 3015 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  SBBG52982  Achillea millefolium J. D. Hobson -Jul-1966 Humboldt Eureka Harbor, Loleta, 10 mi S of Eureka Comment
  HSC100420  Achillea millefolium Carl C. Marshall Jul 1887 437 Humboldt Everywhere. Comment
  HSC36212  Achillea millefolium John Rehling 1975-9-26 108 Humboldt Near Alliance Rd. Comment
  JEPS36906  Achillea millefolium W. L. Jepson 1902-6 1968 Humboldt Redwood Creek; Ukiah, Hupa Indian Reservation Comment
  UC1445424 Image available Achlys californica Ichiro Fukuda and Herbert G. Baker 1963-8-23 Humboldt at Pesula road Humboldt Redwoods State Park 60 Comment
  HSC3335  Achlys triphylla H. E. Parks, S. T. Parks May 1930 752 Humboldt Along Van Duzen River Comment
  HSC3331  Achlys triphylla Doris K. Kildale 1926-4-2 1716 Humboldt Briceland Bridge Comment
  CAS-BOT-BC210658  Achnatherum lemmonii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  UC187245  Achnatherum lemmonii Joseph P. Tracy Jul 27 1908-Jul 30 1908 2707 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  CAS-BOT-BC30421  Achyrachaena mollis Doris K. Kildale 1928-5-19 5116 Humboldt Chalk Mountain Comment
  HSC45096  Acmispon micranthus R. Sutherland 1978-5-13 3 .13578 Humboldt Mattole River. 282 Comment
  HSC70923  Acmispon micranthus R. York 1980-5-18 573 Humboldt Near Black Mtn. 792 Comment
  UCD104507  Acmispon wrangelianus A. H. Murphy 1948-6-1 s.n. Humboldt Blue Slide, along highway, 3 miles west of Bridgeville. Comment
  CAS-BOT-BC391411  Aconitum columbianum subsp. columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  HSC59943  Aconitum columbianum subsp. columbianum J. P. Smith, Steve Selva 1970-6-30 4112 Humboldt Comment
  POM312840  Acorus calamus Malcolm A. Nobs, S. Galen Smith 1949-8-9 1242 Humboldt Marshy pond on south side of the town of Blue Lake. Comment
  UC502922  Actaea rubra Joseph P. Tracy 1932-7-17 10690 Humboldt Devil's Hole Klamath Mts., Trinity Summit (head) 1828 Comment
  SEINET181253  Adenocaulon bicolor Bassett Maguire, Ruth R. Maguire; C. B. Maguire 1934-6-8 15295 Humboldt Bolling Grove State Park Comment
  CAS-BOT-BC29864  Adenocaulon bicolor Carl B. Wolf 1927-8-21 766 Humboldt In Stephen's Grove Comment
  HSC4589  Adenocaulon bicolor Paul Shields Jun 1955 Humboldt 2 miles S. Weott Comment
  RSA12438  Adenocaulon bicolor Carl B. Wolf 1934-7-2 5855 Humboldt 2 mi. from Bald Mt. on rd. to Korbel. 762 Comment
  UC492186  Adenostoma fasciculatum W. L. Jepson and J. P. Tracy 1932-8-7 10337 Humboldt along rd. between Harris and Chamise Mt. (at point 3 mi. n. of s. boundary of Humboldt Co.); North Coast Ranges 762 Comment
Read comments
Oct 24 2018
  HSC54522  Adiantum aleuticum Overton, Butler 1979-7-23 9453 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  UC62739  Adiantum aleuticum P. E. Goddard 1901-7-12 74 Humboldt Hupa Comment
  HSC953  Adiantum aleuticum Gene S. Van Horn 1962-5-20 24 Humboldt 0.5 mi. S of large quarry, 200 yards S of Jacoby Creek 46 Comment
  UCD137170  Adiantum aleuticum Lincoln Constance 1934-6-1 776 Humboldt Bull Creek Region, South Fork Eel River. Comment
  JEPS40092  Aesculus californica Lincoln Constance 1934-5-24 640 Humboldt lower Look Prairie; South Fork Eel River, Bull Creek Region 121 Comment
  OBI37796  Aesculus californica David J. Keil 1983-7-1 17276 Humboldt 2.5 mi NE of Honeydew along Bull Crk Flats rd Comment
  UC1239671  Agastache urticifolia Joseph P. Tracy 1939-8-5 16387 Humboldt Dinsmore's 731 Comment
  UC176467  Agoseris apargioides var. apargioides Joseph P. Tracy 1912-7-7 3746 Humboldt near mouth of Elk River; Northern Coast Region Comment
  SD62068  Agoseris apargioides var. maritima Darley F. Howe 1965-8-7 4121 Humboldt Orick. Comment
  HSC4595  Agoseris grandiflora J. W. Johnson 1961-8-17 1004 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC99561  Agoseris grandiflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 226 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
  UC1125462  Agoseris grandiflora var. grandiflora H. L. Person 1932-7-20 19460 Humboldt highway near Korbel; Eureka Quadrangle Comment
  UC1222938  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1949-6-25 18344 Humboldt 1 mi w, to Box Camp w slope of Trinity Summit Mud Springs; Trinity Summit Comment
  HSC79419  Agoseris heterophylla Kenneth Clark 1980-4-18 582 Humboldt On Coastal Bluffs above Dead Man's Gulch 137 Comment
  JEPS79803  Agoseris heterophylla Joseph P. Tracy 1933-5-30 12417 Humboldt (near Garberville) Redway 152 Comment
  UC165996  Agoseris heterophylla var. heterophylla J. P. Tracy 1903-5-22 1875 Humboldt on grassy hills Alder Point 152 Comment
  UC582742  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1931-6-14 9579 Humboldt at Alton ((along Van Duzen River)); North Coast Ranges, Van Duzen River 30 Comment
  UC1239512  Agoseris hirsuta Joseph P. Tracy 1936-6-9 14885 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 457 Comment
  UCD51855  Agrostis capillaris A. H. Murphy 1947-7-25 s.n. Humboldt Highland Bent, Cottral Ranch. Comment
  CAS-BOT-BC127456  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon. 6 Comment
  CAS-BOT-BC127280  Agrostis exarata Joseph P. Tracy 1934-7-2 13296 Humboldt Trinidad. 60 Comment
  CAS-BOT-BC127285  Agrostis exarata William Arents Silveus 1938-7-10 2969 Humboldt Eureka. Comment
  CAS-BOT-BC127287  Agrostis exarata Henry M. Pollard 1948-7-17 s.n. Humboldt Banks of Klamath River at Orleans. Comment
  CAS-BOT-BC127295  Agrostis exarata 1933-7-20 12809 Humboldt Along Mad River, near Blue Lake. 15 Comment
  POM126122  Agrostis exarata Joseph P. Tracy 1924-7-13 6731 Humboldt Big Lagoon 6 Comment
  RSA32726  Agrostis exarata A. A. Heller 1923-7-8 13772 Humboldt Near Fortuna Comment
  SEINET3916252  Agrostis exarata H. E. Parks, S. T. Parks 1952-1 7553 Humboldt Spruce Cove, Trinidad.; 0 61 Comment
  UC1145061  Agrostis exarata Harold E. Parks and Joseph P. Tracy 1941-7-5 11489 Humboldt Coon Creek, east side of Trinity River below Willow Cr. 152 Comment
  UC186906  Agrostis exarata Joseph P. Tracy 1904-7-31 2127 Humboldt sedge swamp Northern Coast Region, Eureka 0 Comment
  UC34115  Agrostis exarata Joseph Burtt Davy and Walter C. Blasdale 1899-5 6216 Humboldt Eureka Comment
  UCD52382  Agrostis exarata H. E. and S. T. Parks Jun and Jul 1952 7553 Humboldt Spruce Cove, Trinidad. 60 Comment
  BLMAR708  Agrostis exarata Jennifer Wheeler 2013-10-25 708 Humboldt Lacks Creek, Upper Round Prairie 731 Comment
  SEINET11673856  Agrostis exarata P. H. Chandler 1901-1 1525 Humboldt Klamath River, North Coast Ranges 427 Comment
  CAS-BOT-BC139495  Agrostis hallii Joseph P. Tracy 1929-7-4 8610 Humboldt Northern Coast Ranges. French Camp Ridge. 1066 Comment
  CAS-BOT-BC139497  Agrostis hallii Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  HSC72675  Agrostis hallii J. P. Smith 1977-7-3 9257 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  HSC8795  Agrostis hallii J. P. Tracy 1929-7-4 8610 Humboldt French Camp Ridge 1067 Comment
  UC187118  Agrostis hallii Joseph P. Tracy 1911-7-4 3288 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity 182 Comment
  UC526882  Agrostis hallii Joseph P. Tracy 1930-6-29 8812 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  HSC58760  Agrostis pallens Overton, Butler 1979-7-26 10056 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  RSA10067  Agrostis stolonifera Joseph P. Tracy 1924-8-17 6819 Humboldt Trinidad 61 Comment
  SBBG53062  Aira caryophyllea R. N. Philbrick, J. R. Haller 1976-6-25 2 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  SEINET185294  Aira caryophyllea Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-8 15072 Humboldt Coolidge Tree Redwood Park Comment
  UC1103299  Aira caryophyllea Joseph P. Tracy 1919-5-31 5142 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  UC1103301  Aira caryophyllea Joseph P. Tracy 1914-5-14 4439 Humboldt Fort Seward Northern Coast Ranges Comment
  SEINET10835851  Aira caryophyllea A. Arthur Heller 1923-7-8 Heller 13765 Humboldt State redwood camp, 10 miles south of Dyerville. Comment
  HSC104039  Aira elegans C. Reynolds 2015-3-21 25 Humboldt Willow Creek; At bend in Trinity River, on the east end of Kimtu beach, near Camp Kimtu 135 Comment
  HSC33761  Aira praecox Ron Ralston 1975-5-24 81 Humboldt Samoa Dunes off Samoa Blvd., across from boat landing Comment
  UC1103296  Aira praecox Joseph P. Tracy 1932-5-16 10103 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UCR199659  Aira praecox R. F. Thorne, Percy C. Everett 1965-8-9 35308 Humboldt Northwestern; Outer North Coastal region, Big Lagoon 3 Comment
  HSC98976  Allium acuminatum Cara Witte 2008-7-14 900 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  UC13826  Allium acuminatum Harley P. Chandler June, 1901 1349 Humboldt Hupa Indian Reservation Morth Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC102207  Allium amplectens M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1122 Humboldt Andy's Camp 1564 Comment
  HSC58148  Allium amplectens G. L. Clifton, Griswold 1979-8-2 12193 Humboldt Near Oregon Creek. 1661 Comment
  SEINET182670  Allium amplectens Unknown 1936-6-24 645 Humboldt At point where the road from Bridgeville to Dinsmore crosses the Little Van Duzen River, 710 Comment
  UC677684  Allium amplectens C. C. and S. K. Harris 1936-6-24 645 Humboldt at point where road from Bridgeville to Dinsmore crosses the Little Van Duzen River Little Van Duzen River 710 Comment
  UC303139  Allium bolanderi Joseph P. Tracy 1925-6-7 7073 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon Comment
  UC666928  Allium bolanderi Joseph P. Tracy 1932-6-14 10139 Humboldt mountain slopes w mouth of South Fork of Trinity River; South Fork of Trinity River 609 Comment
  HSC65901  Allium bolanderi var. bolanderi M. A. Baker 1980-6-26 2444 Humboldt Near Sims Creek 610 Comment
  CAS-BOT-BC135846  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-10 5417 Humboldt Along road to Red Mountain 0.5 miles west of junction with Swayback Ridge Road - Six Rivers National Forest 1371 Comment
  HSC81792  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5935 Humboldt Along old trail to pond, 0.5 mi. N of Alder Spring 1555 Comment
  SEINET3884719  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-6-10 5418 Humboldt Blocksburg Quad. Along road to Red Mountain 0.5 miles west of junction with Swayback Ridge Road.; 0 1372 Comment
  CHSC114026  Allium triquetrum Richard R. Halse 2013-3-28 8768 Humboldt Along U.S. Hwy. 101 ca. 1.0 miles west of Orick. 4 Comment
  SEINET199681  Allium validum Joseph P. Tracy 1930-7-16 8922 Humboldt South Fork Mountain at McKay Camp. 1676 Comment
  HSC100547  Allium validum Carl C. Marshall May 1886 233 Humboldt Wood's Pasture near Arcata. Comment
  UC21636  Allotropa virgata J. Burtt Davy 1899-6-21 5811 Humboldt Box Camp, Trinity Summit 1524 Comment
  HSC58328  Alnus incana subsp. tenuifolia Overton, Butler 1979-8-2 12626 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC502990  Alnus incana subsp. tenuifolia Joseph P. Tracy 1927-8-22 8335 Humboldt in meadow near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC170943  Alnus rhombifolia Doris K. Kildale 1926-8-8 2457 a Humboldt Dyerville Brdige on South Fork of Eel River 45 Comment
  CAS-BOT-BC169538  Alnus rubra Carl B. Wolf 1927-8-22 796 Humboldt Big Lagoon Comment
  HSC59200  Alnus rubra Terry Roth 1979-5-24 76 Humboldt Union St. near 11th St. Comment
  SBBG25879  Alnus rubra E. R. Blakley 1966-8-17 6797 Humboldt Patrick's Point 5 mi N of Trinidad 60 Comment
  UCR142775  Alnus rubra H. E. Parks, S. T. Parks 1938-4-1 24126 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  SEINET10895894  Alnus rubra Harold E. Parks, Susan T. Parks 1938-4-1 Parks 24126 Humboldt Spruce Cove, Trinidad. 61 Comment
  HSC99364  Alnus viridis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 13 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC526743  Alopecurus aequalis Joseph P. Tracy 1927-7-17 8269 Humboldt w. foothills of Chaparral Mt. (Three Cabins); Northern Coast Ranges, w. foothills of Chaparral Mt., Three 457 Comment
  HSC8894  Alopecurus pratensis D. J. McVean 1965-5-18 78 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  CAS-BOT-BC13703  Ambrosia chamissonis Ira L. Wiggins 1930-7-7 4674 Humboldt Near Samoa Comment
  JEPS40953  Ambrosia chamissonis Joseph P. Tracy 1937-9-26 15687 Humboldt near Samoa; Humboldt Bay 6 Comment
  RSA245279  Ambrosia chamissonis J. D. Ackerman 1973-8-23 118 Humboldt Mad river beach co. park Comment
  RSA26851  Ambrosia chamissonis I. L. Wiggins 1940-7-10 9486 Humboldt Big Lagoon. Comment
  CAS-BOT-BC142905  Amelanchier Doris K. Kildale; L. B. Kildale 1930-5-11 9559 Humboldt McClellan Hill near Bridgeville 609 Comment
  HSC102083  Amelanchier alnifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 987 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC48400  Amelanchier alnifolia var. semiintegrifolia Brad Klipfel 1973-6-10 87 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC96268  Amelanchier alnifolia var. semiintegrifolia J. Breton, A. Livingston 2005-6-10 7 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1357 Comment
  UC154236  Amelanchier alnifolia var. semiintegrifolia J. P. Tracy 1909-7-18 3014 Humboldt immediate vicinity Eureka 0 Comment
  HSC55618  Amelanchier pallida Overton, Butler 1979-7-23 9521 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  SBBG115197  Ammophila arenaria D. Leaberry 1992-6-20 Humboldt Clam Beach County Park, ca. 1 mi N of Arcata Airport Comment
  UC1198611  Anagallis arvensis Joseph P. Tracy 1921-7-10 5850 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  HSC17825  Anagallis arvensis Francis Winter 1960-4-24 Humboldt 1 mi. N of Redwood Creek Ranch 396 Comment
  HSC57007  Anaphalis margaritacea Overton, Butler 1979-7-24 9594 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  UC127736  Anaphalis margaritacea Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  CAS-BOT-BC45138  Anaphalis margaritacea Huron H. Smith 1911-6-6 3793 Humboldt Vances Camp 19 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
  HSC18009  Anemone deltoidea H. E. Parks, S. T. Parks May 1930 748 Humboldt Along Van Duzen River Comment
  CAS-BOT-BC391779  Anemone deltoidea D. E. Breedlove 1962-6-8 3066 Humboldt Along U.S. Highway 101, 8 miles north of Orick 60 Comment
  UC634952  Anemone deltoidea H. L. Mason 1929-5-9 5280 Humboldt Bull Creek Flat Comment
  HSC97491  Anemone oregana C. Witte 2007-5-17 25 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  HSC41238  Anemone oregana var. oregana Brad Klipfel 1974-5-27 376 Humboldt Horse Mountain Comment
  HSC47958  Anemone oregana var. oregana Brad Klipfel 1975-5-24 626 Humboldt Horse Mtn. Comment
  JEPS14108  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  BLMAR431  Angelica lucida Clara Sander 2003-7-12 431 Humboldt South Spit, South spit- east side 3 Comment
  HSC71326  Angelica lucida J. M. DiTomaso 1980-6-21 1607 Humboldt Clam beach. Comment
  UC1197332  Angelica lucida Joseph P. Tracy 1941-8-3 16977 Humboldt at w foot of Table Bluff Table Bluff 6 Comment
  HSC70683  Angelica tomentosa T. A. Ranker Jul 1980 131 Humboldt Along Hwy 36, 36.7 mi E of junction with Hwy 101 Comment
  SEINET13943410 Image available Angelica tomentosa W. A. Weber 1964-1 12204 Humboldt Mountain grade between summit of ridge separating Redwood Creek from Hoopa Valley, a few miles west of Hoopa Comment
  UC642239  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
  HSC49963  Anisocarpus madioides Maralyn O'Meara 1974-7-11 541 Humboldt Kneeland; Barry Ridge Comment
  UC34190  Anisocarpus madioides Harley P. Chandler June, 1901 1313 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC99533  Antennaria rosea subsp. rosea K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 198 Humboldt Near North Trinity Mtn and Water Dog Lakes, Six Rivers National Forest. 1826 Comment
  JEPS13179  Antennaria suffrutescens Joseph P. Tracy 1926-6-20 7626 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1524 Comment
  UC1199434  Antennaria suffrutescens Joseph P. Tracy 1938-6-13 15907 Humboldt Horse Mountain 1432 Comment
  HSC10103  Anthoxanthum occidentale E. W. Styskel 1964-3-7 53 Humboldt 1.5 mi. SE of Redcrest along Hwy. 101 Comment
  SEINET11682981  Anthoxanthum occidentale K. S. Erdman 1970-1 4797 Humboldt Cal-Barrow Road 3 mi E of US 101 at E boundary of Prairie Creek State Park (Redwood N.P.) Comment
  UC905596  Anthoxanthum odoratum David D. Keck 1948-7-2 6010 Humboldt 1.5 mi. E. of Freshwater (Garfield), on Kneeland road Comment
  UC147926  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy Jul 1908 2790 Humboldt ridge between Van Duzen River and Mad River (near Low Gap, Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  HSC77455  Aphanes occidentalis L. P. Janeway 1983-5-1 255 Humboldt North Spit (Samoa Peninsula). Sand dunes W of Samoa Rd and N of Coast Guard Station 6 Comment
  JEPS45613  Aphanes occidentalis W. L. Jepson 1921-8-7 9337 a Humboldt Stone Lagoon; Humboldt Coast Comment
  RSA85397  Apocynum androsaemifolium subsp. pumilum E. K. Balls, Lee W. Lenz 1956-6-12 21661 Humboldt 4.4 mi SW from Willow Creek, along US Hwy. 299, Willow Creek to Arcata 366 Comment
  UC176867  Apocynum cannabinum Joseph P. Tracy 1912-7-26 3838 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  RSA46725  Aralia californica Doris K. Kildale 1937-9-20 15375 Humboldt Hoopa Comment
  POM118486  Arbutus menziesii Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  UC213507  Arbutus menziesii Frank A. Graham 1919-12-20 Humboldt w side of Trinity River near Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  CAS-BOT-BC25210  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-8 16850 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  CAS-BOT-BC23906  Arctostaphylos canescens subsp. sonomensis Joseph P. Tracy 1935-7-14 14064 Humboldt Horse Mountain 1432 Comment
  RSA15552  Arctostaphylos cinerea C. B. Wolf 1927-8-30 1240 Humboldt French's Ranch top of Wilder Ridge, between Honeydew and Ettersburg, near Upper Matole. Comment
  CAS-BOT-BC23733  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Van Duzen River. Comment
  CAS-BOT-BC23745  Arctostaphylos columbiana Doris K. Kildale 1926-8-22 2586 Humboldt Wiregrass Prairie on road from Orick to Martin's Ferry 716 Comment
  RSA622695  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27673 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  UC585920  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15171 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC585924  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13151 Humboldt French Camp Ridge 1066 Comment
  UC718361  Arctostaphylos columbiana Carl B. Wolf 1934-7-2 5904 Humboldt 4 mi from Snow Camp (on road to Bald Mt.); Mts. E. of Korbel Comment
  UCD50679  Arctostaphylos columbiana Joseph P. Tracy 1937-7-17 15439 Humboldt Eureka. 45 Comment
  UCD50745  Arctostaphylos columbiana Roman Gankin 1965-8-5 543 A Humboldt Top of Chimisal Mountain west of Wailaki Recreation Area, Bureau of Land Management. Comment
  UCD50760  Arctostaphylos columbiana Roman Gankin; W. R. Hildreth 1967-10-26 1168 Humboldt 20 road miles east of Hwy. 101 on Bald Hills Road (from Orick). Comment
  RSA13418  Arctostaphylos columbiana var. tracyi H. E. Parks 1931-3-25 917 Humboldt Near Patrick's point. Comment
  HSC100252  Arctostaphylos densiflora J. P. Smith, & J. O. Sawyer 2010-5-2 12809 Humboldt Along Hwy. 96, N of Orleans 140 Comment
  HSC7631  Arctostaphylos glandulosa Doris K. Kildale 1927-1-30 2899 Humboldt Big Lagoon, flat on S side of Lagoon Comment
  RSA632796  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27781 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  RSA632799  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27794 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  UCSB11765  Arctostaphylos manzanita Nelson, R. 1950-7-26 Humboldt 0.5 mile northwest of Neafus Peak 762 Comment
  SEINET11991009  Arctostaphylos manzanita S. Edwards, Roderick, W. 1983-1 103 Humboldt in Samoa at W end of Eureka-Samoa bridge Comment
  CAS-BOT-BC24326  Arctostaphylos manzanita subsp. manzanita L. R. Abrams 1918-6-15 7111 Humboldt Brannan Mt. near Willow Creek. 1371 Comment
  JEPS38980  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1934-7-1 13275 Humboldt Willow Creek Trinity River Valley 152 Comment
  POM367342  Arctostaphylos manzanita subsp. manzanita Thomas W. Nelson, Jane Nelson, A. Nelson 1976-2-21 2253 Humboldt Tish-Tang Campground. Comment
  UC153967  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1909-10-7 3112 Humboldt Gans Prairie Northern Coast Ranges 609 Comment
  UC32687  Arctostaphylos manzanita subsp. manzanita Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  HSC44450  Arctostaphylos nevadensis Brad Klipfel 1975-5-30 654 Humboldt Horse Mtn. Comment
  CAS-BOT-BC40070  Arctostaphylos nevadensis subsp. knightii Doris K. Kildale 1929-4-25 7436 Humboldt McDowell Butte - Kneeland Prairie 914 Comment
  SEINET11989092  Arctostaphylos nevadensis subsp. knightii R. Gankin, Hildreth, W. R. 1967-1 1174 Humboldt 21.4 mi E of US 101 on Bald Hills Rd from Orick, French Camp Ridge Comment
  HSC99037  Arctostaphylos nevadensis subsp. nevadensis C. Witte 2008-10-18 1058 Humboldt Along National Forest 1. 1/4 mile south of intersection with 6N35. Near Horse Mountain Botanical Area. 1480 Comment
  HSC35782  Arctostaphylos patula Thomas W. Nelson, B. Reinhardt 1975-7-30 2097 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  UC32689  Arctostaphylos patula J. Burtt Davy 1899-6-21 5752 Humboldt slopes of Trinity Summit North Coast Ranges 1219 Comment
  HSC59745  Arctostaphylos uva-ursi Clark L. Miller 1979-5-9 3113 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  POM212078  Arctostaphylos uva-ursi C. B. Wolf 1930-10-28 1035 Humboldt Samoa. 15 Comment
  SBBG83935  Arctostaphylos uva-ursi R. Gankin, W. R. Hildreth 1967-10-24 1147 Humboldt 1.7 mi S of Samoa, on Humboldt Peninsula Comment
  UC180220  Arctostaphylos uva-ursi Joseph P. Tracy 1914-8-30 4594 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  SEINET11987332  Arctostaphylos uva-ursi var. coactilis J. Sigg, McClintock, E.; Knight, W.; Knight, I. 1981-1 4213 Humboldt Strybing Arboretum, Golden Gate Park, San Francisco, orig. probably from Samoa Comment
  UCD20371  Arctotheca calendula John T. Kennedy 2002-5-9 s.n. Humboldt Centerville Rd., 2.5 miles from ocean. Comment
  UCD98448  Armeria maritima subsp. californica Linda M. Barker 1976-6-1 1553 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC48024  Arnica cernua Brad Klipfel 1974-6-25 423 Humboldt Horse Mtn. Comment
  HSC64262  Arnica cordifolia J. O. Sawyer, M. A. Erickson 1979-6-23 3397 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  OBI35861  Arnica cordifolia David J. Keil 1983-7-2 17333 Humboldt Horse Mtn Summit SW of Willow Crk Comment
  UC1103325  Arrhenatherum elatius Joseph P. Tracy 1927-9-25 8369 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  SEINET201063  Artemisia douglasiana Joseph P. Tracy 1925-11-1 Humboldt Shively. Comment
  BLMAR665  Artemisia douglasiana Jennifer Wheeler 2012-6-12 665 Humboldt King range, strawberry rock grazing allotment 253 Comment
  UC1222996  Artemisia douglasiana Joseph P. Tracy 1950-8-20 19326 Humboldt 8 mi below Orleans (in sandy alluvial wash at Big Bar, near Slate Creek); Klamath River 121 Comment
  SEINET201067  Artemisia dracunculus Joseph P. Tracy 1916-9-5 Humboldt Humboldt County: South fork of eel river 4 miles above the mouth. Comment
  SEINET190493  Artemisia suksdorfii H. E. Parks May 1940 24178 Humboldt Little River Comment
  HSC55850  Aruncus dioicus var. acuminatus G. L. Clifton, Griswold 1979-7-25 10811 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC154232  Aruncus dioicus var. pubescens Joseph P. Tracy 1909-6-13 2999 Humboldt near mouth of Warren Creek (hillside on Mad River); Northern Coast Region 0 Comment
  CAS-BOT-BC453343  Aruncus dioicus var. vulgaris Volney Rattan 1878-6-16 s.n. Humboldt Mad River Comment
  HSC58163  Asarum caudatum G. L. Clifton, Griswold 1979-8-2 12227 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  CAS-BOT-BC400532  Asarum caudatum L. R. Abrams 1922-6-25 8259 Humboldt North of the Mad River near Arcata Comment
  RSA273341  Asclepias cordifolia Thomas W. Nelson, James Nelson 1976-5-30 2613 Humboldt McKeown Ranch north of Dinsmore. Comment
  SEINET12283173  Asclepias cordifolia J. P. Tracy 1950-1 19043 Humboldt Stony hillside, under partial shade of oaks and madrones. Scarce. Trinity River, east side, Comment
  HSC55067  Aspidotis densa G. L. Clifton, Griswold 1979-7-31 11647 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CDA26595  Astragalus agnicidus Gordon Leppig 2001-6-25 2107 Humboldt PALCO land. THP 1-00-461HUM. Comment
  HSC94176  Astragalus agnicidus Melisa Brooks 2000-6-14 Humboldt Pacific Lumber Co. land 671 Comment
  RSA167271  Astragalus umbraticus Joseph P. Tracy 1940-8-25 16706 Humboldt Bald Mountain; ''Lake Prairie''. 1066 Comment
  HSC57001  Asyneuma prenanthoides Overton, Butler 1979-7-24 9585 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC68722  Athyrium filix-femina var. californicum Doris K. Kildale 1928-12-30 6762 Humboldt Phillipsville Comment
  HSC102552  Athyrium filix-femina var. cyclosorum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1540 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  JEPS35139  Athyrium filix-femina var. cyclosorum W. L. Jepson 1932-8-8 16529 Humboldt hill above Weott Comment
  HSC69756  Atriplex prostrata Thomas W. Nelson 1977-9-22 3751 Humboldt Along E side of State Rte. 101, N of Eureka airport Comment
  HSC26780  Avena barbata Thomas W. Nelson 1971-5-31 461 Humboldt 915 Comment
  HSC75513  Avena sativa J. O. Sawyer, R. J. Cole 1977-7-3 3002 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  RSA93204  Baccharis douglasii F. W. Peirson 1926-7-13 7061 Humboldt Mad River, vicinity of Blue Lake. Comment
  JEPS32397  Baccharis glutinosa W. L. Jepson 1936-8-11 17867 Humboldt spot on mountainside, Philipsville South Fork Eel River Comment
  CAS-BOT-BC98030  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay 30 Comment
  HSC100426  Baeria chrysostoma Carl C. Marshall Jun 1885 31 Humboldt Bear River. Comment
  CAS-BOT-BC99988  Balsamorhiza deltoidea Doris K. Kildale 1929-4-29 7449 Humboldt Willow Creek - Salyer Road along Trinity River, 3 miles south of Willow Creek Comment
  CAS-BOT-BC99989  Balsamorhiza deltoidea Harold E. Parks; Joseph P. Tracy 1935-6-16 11282 Humboldt Buck Mt. Lower NW slopes 792 Comment
  HSC73147  Berberis aquifolium M. A. Baker 1980-5-18 1307 Humboldt Near Black Mtn. 1006 Comment
  UC1198388  Berberis aquifolium Joseph P. Tracy 1924-4-27 6641 Humboldt along hwy near Ruby Creek Willow Creek 609 Comment
  HSC28089  Berberis nervosa J. D. Ackerman 1973-4-29 77 Humboldt 2 mi. NE of Kneeland Comment
  HSC76280  Berberis nervosa Denis Kearns 1981-7-8 146 Humboldt Near Bluff Creek 622 Comment
  HSC81928  Berberis nervosa Thomas W. Nelson, Jane Nelson 1979-7-3 4951 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  UC35055  Berberis nervosa Chestnut and Drew 1888-7-11 Humboldt Jarnigan's Comment
  CAS-BOT-BC66277  Blechnum spicant Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  UC62522  Blechnum spicant W. C. Blasdale 1896-6-1 Humboldt Freshwater Comment
  POM319594  Blechnum spicant Patricia Wilder 1968-8-21 4382 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  CAS-BOT-BC15787  Boechera acutina Harold Ernest Parks; Joseph Prince Tracy 1949-6-25 11678 Humboldt Trinity Summit. At Box Camp. 1463 Comment
  CAS-BOT-BC14301  Boechera platysperma Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mountain Trail. 1676 Comment
  HSC39874  Bolboschoenus robustus Peter Sorensen 1976-8-6 Humboldt King Salmon Comment
  HSC78085  Botrychium multifidum var. intermedium L. P. Janeway, Amy Eisenberg 1984-4-25 748 Humboldt On N Spit of Humboldt Bay, SE side of intersection of Samoa and Fairhaven rds. 3 Comment
  HSC56152  Boykinia major G. L. Clifton, Griswold 1979-8-1 12008 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC56238  Boykinia major Walter Overton 1979-8-1 12327 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC45727  Boykinia occidentalis Patricia Shesgreen 1978-7-30 118 Humboldt Sea Lion Gulch, 50 yards from ocean along stream bank Comment
  HSC27017  Boykinia occidentalis Brad Klipfel 1973-8-17 270 Humboldt Big Lagoon Park Comment
  RSA32654  Boykinia occidentalis Doris K. Kildale 1925-7-28 1100 Humboldt [Unspecified] Comment
  UC581799  Brickellia greenei Joseph P. Tracy 1935-7-30 14361 Humboldt Salmon Summit 1767 Comment
  HSC9085  Briza maxima S. R. Johnson 1965-5-2 50 Humboldt Luffenholz Beach near parking area Comment
  UC657696  Briza maxima P. B. Kennedy 1929-6-13 Humboldt Etterberg Comment
  HSC45594  Briza minor Diane L. Reed 1978-5-7 60 Humboldt 2 mi. up Friday Ridge Rd. from Hwy. 299 Comment
  HSC79436  Briza minor Kenneth Clark 1980-6-14 664 Humboldt Shelter Cove, lower alluvial terrace of Dead Man's Gulch 30 Comment
  HSC9102  Briza minor J. E. Lankila 1962-5-6 9 Humboldt W bank of Eel River across from Shively, .25 mi. from Bear Creek Comment
  HSC38619  Brodiaea elegans subsp. elegans D. E. Anderson, J. P. Smith 1971-6-21 1107 Humboldt 16.2 miles E of Garberville on road to Alderpoint. Comment
  UCR123923  Brodiaea elegans subsp. elegans George K. Helmkamp, E. A. Helmkamp 2001-7-8 6967 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  HSC23716  Brodiaea elegans subsp. elegans Tim Baroni 1971-6-25 36 Humboldt 8 mi. E of Petrolia Comment
  HSC35619  Brodiaea elegans subsp. elegans Thomas W. Nelson, B. Reinhardt 1975-7-30 2114 Humboldt E of Pilot Rock Comment
  JEPS7733  Brodiaea elegans subsp. elegans Joseph P. Tracy 1926-6-27 7695 Humboldt Horse Mountain Pass on Trinity Highway; Northern Coast Ranges, Horse Mountain, Horse Mountain Pass 883 Comment
  UC1222692  Brodiaea elegans subsp. elegans Joseph P. Tracy 1950-7-31 19234 Humboldt near Clear Lake; Grouse Mountain, Buck Prairie 1573 Comment
  HSC32915  Brodiaea stellaris Thomas W. Nelson, Jane P. Nelson 1973-3-28 964 Humboldt McKeown Ranch N of Dinsmore Comment
  SEINET202663  Brodiaea stellaris Milo S. Baker 1923-7-26 127 b Humboldt Above camp on south fork of Yager Creek. Comment
  HSC33078  Brodiaea terrestris subsp. terrestris Thomas W. Nelson, J. D. Ackerman 1974-5-14 1267 Humboldt Beside old Samoa-Crannell railroad bed adjacent to the Mad River Slough N of Emerson Mill Comment
  UC666934  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1927-6-8 8111 Humboldt Trinidad 3 Comment
  CAS-BOT-BC484611  Brodiaea terrestris subsp. terrestris Ira L. Wiggins 1932-6-18 5877 Humboldt Grassy hillside near outcrop of serpentine at mouth of Little River. Comment
  UC1103281  Bromus carinatus var. carinatus Joseph P. Tracy 1941-6-15 16910 Humboldt Wilder Ridge 609 Comment
  SEINET201048 Image available Bromus carinatus var. marginatus Harold E. Parks, Joseph P. Tracy 1935-6-8 11268 Humboldt Trinidad Comment
  CHSC10108  Bromus diandrus J. W. Johnson 1962-4-18 1268 Humboldt Arcata. Along the lower lane below the W.M. Lanphere home, Samoa Peninsula. Comment
  HSC9278  Bromus diandrus W. F. Nickel 1965-5-13 Humboldt College Elementary School, on HSU campus. Comment
  UCD58512  Bromus diandrus Linda M. Barker 1976-4-30 1403 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  BLMAR41  Bromus diandrus Brad Barr 1982-6-21 41 Humboldt King range, hidden valley enclosure Comment
  HSC9174  Bromus hordeaceus G. B. Kendall 1965-5-8 44 Humboldt Trinidad State Park Beach. Comment
  UC1103365  Bromus hordeaceus Joseph P. Tracy 1905-6-4 2187 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC97099  Bromus sterilis Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1364 Comment
  HSC54214  Bromus tectorum Griswold, Butler 1979-7-12 7264 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  CAS-BOT-BC185520  Bromus vulgaris A. A. Heller 1923-7-10 13789 Humboldt At a state redwood camp between Scotia and Pepperwood. Comment
  HSC58810  Bromus vulgaris G. L. Clifton, Griswold 1979-8-1 11988 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  UC1145187  Bromus vulgaris Joseph P. Tracy 1949-6-20 18317 Humboldt 6 mi se of Arcata (Fickle Hill); Fickle Hill 609 Comment
  CAS-BOT-BC36862  Cakile edentula var. edentula Doris K. Kildale 1926-7-14 2375 Humboldt Trinidad Beach. Comment
  HSC49024  Cakile maritima Patricia Shesgreen 1978-8-19 143 Humboldt Mad River Beach, Arcata Comment
  UC1222658  Cakile maritima Joseph P. Tracy 1950-6-8 18753 Humboldt Cape Mendocino, south of point of the Cape Cape Mendocino 3 Comment
  SEINET11092947  Cakile maritima Unknown 1948-6-10 18062 Humboldt CALIFORNIA PLANTS -- HUMBOLDT COUNTY Dwarf plants abundant. A very recent introduction TRINIDAD Beach west of town. Altitude 10 to 200 feet. Comment
  UCD114934  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt About 1 mile SW of Samoa. Comment
  CAS-BOT-BC185316  Calamagrostis foliosa Joseph P. Tracy 1936-6-9 14899 Humboldt Bank of Mattole River at bridge 3 miles east of Petrolia. 30 Comment
  SBBG83771  Calamagrostis koelerioides J. D. Hobson -Jul-1966 Humboldt S end of sand spit forming Eureka Harbor, 10 mi S of Eureka; Loleta Comment
  UC1103290  Calamagrostis koelerioides Joseph P. Tracy 1934-7-18 13408 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  UC526803  Calamagrostis koelerioides Joseph P. Tracy 1933-8-30 13008 Humboldt Horse Mountain Northern Coast Ranges 1371 Comment
  JEPS72919  Calamagrostis nutkaensis Lincoln Constance 1934-6-25 923 Humboldt Englewood Bull Creek Region, South Fork Eel River (4 mi n of Dyerville and of n boundary of Humboldt Redwood Park, on Redwood Hwy) Comment
  UCD57741  Calamagrostis rubescens Joseph P. Tracy 1938-7-17 16082 Humboldt Garberville. 152 Comment
  HSC100604  Calandrinia menziesii Carl C. Marshall Jun 1887 472 Humboldt Throughout Humboldt County. Comment
  HSC59563  Callitriche heterophylla Rick Lundquist 1979-5-18 96 Humboldt Clam Beach Ponds 0 Comment
  CAS-BOT-BC80387  Calocedrus decurrens Doris K. Kildale 1927-5-13 3129 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC80391  Calocedrus decurrens Doris K. Kildale 1928-10-7 6750 Humboldt Trinity River at Willow Creek Flat Comment
  HSC72809  Calocedrus decurrens Gail Newton 1980-6-28 676 Humboldt Near Mad River Butte. 1536 Comment
  RSA47092  Calocedrus decurrens Doris K. Kildale 1926-8-31 2606 Humboldt Union Mattole - Geo. H. Miner s Ranch, Mattole River Valley Comment
  UC1601652  Calochortus coeruleus Joseph Burtt Davy Jun 21 1899-Jun 23 1899 5744 1/2 Humboldt Trinity Trinity Summit Comment
  HSC67176  Calochortus tolmiei Thomas W. Nelson, James Nelson 1980-6-10 5427 Humboldt Along NE side of Red Mtn. 1433 Comment
  HSC74278  Calochortus tolmiei M. A. Baker 1980-5-23 1395 Humboldt Near Buck Mtn. 1524 Comment
  CAS-BOT-BC494361  Calochortus tolmiei Volney Rattan 1879-1-1 s.n. Humboldt Ferndale Comment
  CAS-BOT-BC494366  Calochortus tolmiei H. C. Cantelow 1941-4-19 36 Humboldt 2 1/2 mi. n. e. of Cape Town. Open hillside above ocean on rd. to Ferndale from Patrolia. Comment
  CAS-BOT-BC496521  Calochortus tolmiei Lincoln Constance; Alan A. Beetle; Joseph P. Tracy 1940-5-17 2614 Humboldt Larrabee Valley, near Eureka 762 Comment
  HSC34875  Calochortus tolmiei Thomas W. Nelson, James Nelson 1975-5-5 1779 Humboldt Beside Hwy. 101, ~ 4 mi. S of the Salmon Creek Bridge Comment
  UC176353  Calochortus tolmiei Joseph P. Tracy 1913-6-22 4263 Humboldt opposite Buck Mountain (Dinsmore's Ranch); North Coast Ranges, Valley of Van Duzen River 762 Comment
  UC3435  Calochortus tolmiei H. N. Bolander 1867-1 6555 Humboldt Red Mts. Comment
  UC1222580  Caltha biflora Joseph P. Tracy 1951-6-14 19408 Humboldt Snow Camp. 1402 Comment
  UC180238  Caltha biflora Joseph P. Tracy 1914-7-4 4525 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges. 1066 Comment
  SEINET3863989  Calycadenia fremontii G. D. Carr 1974-9-12 785 Humboldt 2.1 mi W of Hwy 299 on Friday Ridge Rd, ca 3.5 mi WSW of Salyer.; 0 458 Comment
  HSC48948  Calypso bulbosa M. A. Baker 1979-5-17 732 Humboldt On FS 1 along Wilson Creek, just E of FS 15N01 Comment
  UC1222191  Calypso bulbosa Joseph P. Tracy 1950-5-7 18643 Humboldt about 5 mi n of Bridgeville (on road to South Yager Valley) Comment
  UCD138888  Calypso bulbosa var. occidentalis Julie Lortz 1966-5-14 66 -51 Humboldt 26 mile east of Willow Creek. 1219 Comment
  HSC54024  Calyptridium monospermum Griswold, Butler 1979-7-12 7193 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC97957  Calystegia occidentalis subsp. occidentalis Cara Witte, Michael Scott 2007-6-22 350 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  UC562487  Calystegia occidentalis subsp. occidentalis Joseph P. Tracy 1933-8-30 13006 Humboldt Horse Mountain , Horse Mountain (Northern Coast Ranges) 1310 Comment
  HSC104033  Calystegia soldanella E. R. Fyer 2015-4-26 24 Humboldt Along New Navy Base Road 9 Comment
  HSC6366  Calystegia soldanella K. P. St. John 1965-5-21 40 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  RSA603171  Calystegia soldanella D. D. Keck, Jens Clausen 1935-6-16 3384 Humboldt Mouth of Little River. Comment
  UCD126159  Calystegia soldanella Linda M. Barker 1976-6-1 1559 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET3991741  Camassia leichtlinii Unknown 1947-6-26 Humboldt South Fork Mtn. Comment
  RSA12420  Camassia leichtlinii subsp. suksdorfii Carl B. Wolf 1934-7-2 5873 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  CAS-BOT-BC493384  Camassia quamash subsp. linearis M. S. Jussel 1931-5-1 s.n. Humboldt On road to Garberville Comment
  UCR122368  Camissonia cheiranthifolia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7021 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  HSC16440  Camissonia cheiranthifolia B. Francis 1964-5-19 6 Humboldt 0.5 mi. S of Fairhaven Comment
  HSC16444  Camissonia cheiranthifolia C. O. Baker 1962-5-7 31 Humboldt 1 mi. N of Samoa, 1/2 mi. E of coastline Comment
  RSA186809  Camissonia cheiranthifolia subsp. cheiranthifolia T. Mosquin, L. Mosquin 1962-7-19 4489 Humboldt 8.8 miles north of Big Lagoon along U.S. Highwy 101 to Oregon Comment
  UC1196947  Camissonia contorta Joseph P. Tracy 1939-4-29 16244 Humboldt mouth of Slate Cr. Klamath River 121 Comment
  CHSC68787  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Vernon Oswald 1997-6-5 8532 Humboldt North Spit of Humboldt Bay, west side of New Navy Base Rd. 1.0 mi south of Hwy. 255. 6 Comment
  JEPS11741  Campanula prenanthoides W. L. Jepson 1932-7-26 16413 Humboldt Bull Creek Comment
  SEINET10462960  Campanula prenanthoides Klipfel 1973-8-3 KLIPFEL 309 Humboldt Along ridge trail southeast of North Trinity Mountain. T8N R6E Secs. 11, 14 1829 Comment
  SEINET10463306  Campanula prenanthoides Pollard 1948-7-23 POLLARD s.n. Humboldt REECE POINT NEAR ORLEANS Comment
  SEINET10463588  Campanula scouleri Rattan 1883-6-29 RATTAN s.n. Humboldt HILLS IN FORESTS NEAR REDWOOD CREEK Comment
  SEINET10463759  Campanula scouleri Joseph P. Tracy 1937-7-25 Tracy 15560 Humboldt Happy Camp Mountain; in Trinity Summit Range, northeast of Hawkins Bar, moist bank. 1280 Comment
  HSC6624  Capsella bursa-pastoris Paul Shields Jul 1955 Humboldt 2 mi. S of Weott Comment
  UC302119  Cardamine angulata Joseph P. Tracy 1926-5-22 7510 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  BLMAR76  Cardamine californica Jennifer Anthony-Wheeler 1994-6-2 76 Humboldt IAQUA, gwng up logging rd in conif forest 853 Comment
  CAS-BOT-BC37424  Cardamine californica Doris K. Kildale 1927-1-23 2974 Humboldt Van Duzen River at the Blue Shale. Comment
  UC1199187  Cardamine californica Joseph P. Tracy 1914-5-14 4428 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 Comment
  CHSC110707  Cardamine californica var. californica Dean Wm. Taylor 2004-6-24 19143 Humboldt Spike Buck Mountain, north slope thereof. 1432 Comment
  SDSU2481  Cardamine californica var. californica R. M. Beauchamp 1967-2-22 194 Humboldt 122 Comment
  JEPS53400  Cardamine californica var. integrifolia Lincoln Constance 1934-5-26 651 Humboldt near Founders' Tree (North Dyerville Flat Grove, South Fork Eel River, Bull Creek Region); Bull Creek Region, South Fork Eel R, North Dyerville Flat gr 48 Comment
  UC494001  Cardamine californica var. sinuata Parks and Tracy 916 Humboldt Lower Van Duzen River 60 Comment
  CAS-BOT-BC37792  Cardamine nuttallii Joseph P. Tracy 1927-6-12 8129 Humboldt Northern Coast Ranges. Horse Mountain. 1524 Comment
  UC492259  Cardamine nuttallii Joseph P. Tracy 1932-7-18 10717 Humboldt head Brett Hole (Trinity Summit); Klamath Mountains, , head Brett Hole 1828 Comment
  CAS-BOT-BC37895  Cardamine oligosperma Duart V. Brown 1942-5-11 2871 Humboldt Three miles east of East Fork of Willow Creek. Comment
  POM118630  Cardamine oligosperma Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  HSC79513  Cardamine oligosperma Kenneth Clark 1980-3-2 512 Humboldt Middle alluvial terrace, Dead Man's Gulch 37 Comment
  RSA244996  Cardamine oligosperma H. S. Logsdon 1964-4-11 21 -a Humboldt 4.0 miles NE of Orick at Boyes Prairie. Comment
  UC161490  Cardamine pensylvanica Joseph P. Tracy 1905-4-16 2164 Humboldt region about Humboldt Bay (near Bucksport); Northern Coast Region, Humboldt Bay region, nr Bucksport 0 Comment
  CAS-BOT-BC384761  Cardionema ramosissimum Milo S. Baker 1927-8-16 2445 b Humboldt Samoa Comment
  UC1409184  Cardionema ramosissimum Robert F. Thorne and P. Everett 1965-8-5 35155 Humboldt Samoa Dunes 3 Comment
  SEINET11861099  Carduus pycnocephalus J. P. Tracy 1947-6-8 17703 Humboldt 0.5 mi W of town, vicinity of Carlotta 30 Comment
  HSC100466  Carex Carl C. Marshall May 1886 207 Humboldt Tilley's Place. Comment
  JEPS109914  Carex arcta Dean W. Taylor 2006-8-3 19573 Humboldt Lake Prairie; marshy area between the dam and the county road 1057 Comment
  SEINET10585514  Carex arcta Joseph P. Tracy 1934-7-13 Tracy 13389 Humboldt Dow's Prairie. In sedge swamp with C. exsicata. 61 Comment
  UC1103084  Carex athrostachya Joseph P. Tracy 1930-7-23 9139 Humboldt Horse Mountain, near Cold Springs North Coast Ranges 1524 Comment
  CAS-BOT-BC19612  Carex brainerdii Joseph Prince Tracy 1935-7-30 14350 Humboldt Salmon Summit. On ridge 2 miles southwest of top. 1767 Comment
  CAS-BOT-BC19614  Carex brainerdii Joseph Prince Tracy 1937-7-24 15525 Humboldt Trinity Summit. Head of Devil's Hole. 1767 Comment
  HSC45391  Carex buxbaumii Thomas W. Nelson, Jane P. Nelson 1978-7-2 4404 Humboldt Off FS 2S08 near Pine Mtn., road to Lost Lake 1463 Comment
  HSC96554  Carex buxbaumii Gordon Leppig 1997-6-19 448 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC562721  Carex concinnoides Joseph P. Tracy 1935-6-2 13922 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC34975  Carex densa Joseph Prince Tracy 1942-6-15 17135 Humboldt Englewood. Natural prairie, near Redcrest resort. 91 Comment
  HSC34955  Carex densa Thomas W. Nelson 1975-5-24 1866 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC74421  Carex echinata subsp. echinata Gail Newton 1980-8-10 2044 Humboldt Near Blake Mtn. 1707 Comment
  SEINET2044705 Image available Carex echinata var. ormantha Juha Pykala, D. H. Norris 1987-6-11 1611 Humboldt North Trinity Mountian Wilderness, W of Crogan Hole. 1555 Comment
  UC1103079  Carex feta Joseph P. Tracy 1936-6-3 14846 Humboldt at Willow Creek Trinity River Valley 152 Comment
  UC1152072  Carex feta Joseph P. Tracy 1950-7-6 19010 Humboldt 3 mi s Burr Valley (on the Albee Road); Buck Mountain 1158 Comment
  SEINET11631099  Carex fracta J. P. Tracey 1950-1 18963 Humboldt "Fern Spring", Happy Camp Mountain (in Trinity Summit Range, 6 mi NE of Hawkins Bar) 1280 Comment
  CAS-BOT-BC20841  Carex geyeri Joseph Prince Tracy 1933-7-11 12662 Humboldt Horse Mountain. 1432 Comment
  UC1103070  Carex globosa Joseph P. Tracy 1942-6-15 17164 Humboldt Garberville 152 Comment
  UC1103076  Carex globosa Joseph P. Tracy 1933-6-9 12538 Humboldt Englewood North Coast Ranges 91 Comment
  CAS-BOT-BC146592  Carex gynodynama Joseph P. Tracy 1927-5-8 7969 Humboldt Phillipsville; facing South Fork of Eel River 121 Comment
  CAS-BOT-BC22314  Carex harfordii Joseph Prince Tracy 1938-6-15 15934 Humboldt Vicinity of Carlotta. 30 Comment
  CAS-BOT-BC21752  Carex hassei Joseph Prince Tracy 1927-6-17 8170 Humboldt Big Lagoon. 6 Comment
  CAS-BOT-BC21754  Carex hassei Joseph Prince Tracy 1941-5-11 16868 Humboldt Big Lagoon. 152 Comment
  IRVC1227  Carex hendersonii R. H. Whittaker, W. A. Niering U Humboldt Humboldt Redwoods State Park. Comment
  UC1103595  Carex hendersonii Joseph P. Tracy 1942-6-15 17143 Humboldt on the Briceland road Redwood Creek 121 Comment
  UC562335  Carex hoodii Joseph P. Tracy 1932-7-11 10410 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC103622  Carex hoodii 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
  HSC102152  Carex laeviculmis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1059 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC7789  Carex laeviculmis Joseph Prince Tracy 1914-7-4 4524 Humboldt High Prairie on Bald Mountain. 1066 Comment
  UC562250  Carex lenticularis var. impressa Joseph P. Tracy 1935-7-23 14148 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  UC249733  Carex lenticularis var. limnophila Joseph P. Tracy 1923-6-17 6275 Humboldt Northern Coast Region, Big Lagoon Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  CAS-BOT-BC21121  Carex leptalea Joseph Prince Tracy 1918-7-21 5086 Humboldt Northern Coast Range. Humboldt Hill. 91 Comment
  HSC91619  Carex leptopoda E. Mackey 1987-7-19 Humboldt Patrick's Point State Park Comment
  SEINET7467750 Image available Carex leptopoda J. A. Churchill 1984-5-29 8069 Humboldt entrance road to Cal-Barrel Area Comment
  HSC98941  Carex mendocinensis Cara Witte 2008-6-4 682 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  SEINET12649599 Image available Carex mendocinensis Peter F. Zika 2011-1 25496 Humboldt 1310 Comment
  CAS-BOT-BC32133  Carex multicaulis Joseph Prince Tracy 1941-4-11 16857 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  HSC44548  Carex multicostata Brad Klipfel 1973-7-15 167 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UCD140669  Carex multicostata Don Hagar 1957-8-27 s.n. Humboldt Red Cap Prairie, Trinity Summit area, around 15 miles east of Hoopa. Comment
  CHSC40169  Carex nudata L. P. Janeway 1984-5-13 777 Humboldt Along the North Fork Yager Creek 18 miles east of the Kneeland P.O. on the Kneeland/Bridgeville Road. 381 Comment
  CHSC47355  Carex nudata L. P. Janeway 1984-5-13 784 Humboldt Levee on E side Eel River near Fortuna and Sandy Prairie Rd. 12 Comment
  UC1103621  Carex nudata Joseph P. Tracy 1933-5-18 12194 Humboldt 6 mi W of Blue Lake (Mad River) 15 Comment
  HSC76817  Carex obnupta L. P. Janeway 1982-6-12 5 Humboldt Dry Lagoon 3 Comment
  POM118373  Carex obnupta Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC562323  Carex obnupta Joseph P. Tracy 1934-7-30 13503 Humboldt along coast in front of South End of Stone Lagoon; Dry Lagoon 3 Comment
  HSC7062  Carex obnupta J. W. Johnson 1961-4-19 1248 Humboldt Arcata, along Miller Lane, Miller Farm, Samoa Peninsula Comment
  CAS-BOT-BC119263  Carex ovalis Joseph Prince Tracy 1937-8-7 15617 Humboldt Murphy Ridge on Bald Mt. 914 Comment
  HSC70166  Carex ovalis Thomas W. Nelson 1978-6-10 4418 Humboldt Behind the Seventh-Day Adventist Church on F St., Eureka Comment
  UC562653  Carex pachycarpa Joseph P. Tracy 1932-7-11 10411 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC7158  Carex pachycarpa H. E. Parks, J. P. Tracy 1935-6-16 11271 Humboldt Buck Mtn., lower NW slopes 793 Comment
  HSC48038  Carex pachystachya D. H. Norris 1972-6-26 23008 Humboldt Along Grouse Mtn. Rd. about 3 mi. from intersection with Horse Mtn. Rd. Comment
  HSC98947  Carex pachystachya Cara Witte 2008-7-2 810 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  UCSC000108  Carex pansa C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  JEPS79843  Carex scopulorum var. bracteosa Joseph P. Tracy 1932-7-14 10562 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  HSC102533  Carex spectabilis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1519 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  CAS-BOT-BC117347  Carex stipata Joseph Prince Tracy 1931-5-17 9422 Humboldt Lack Pond; in Trinity River Valley, opposite mouth of Willow Creek. 152 Comment
  UC562269  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
  CAS-BOT-BC116941  Carex subbracteata Harley Pierce Chandler 1901-5-1 1115 Humboldt Humboldt Bay 30 Comment
  CHSC102857  Carex subbracteata Peter F. Zika 2009-6-16 24497 Humboldt Outer North Coast Range. Above Chezen Road, at junction with Route 299; between Lord-Ellis and Berry summits. 510 Comment
  JEPS25972  Carex subbracteata Joseph P. Tracy 1935-5-25 13885 Humboldt Dobbyn Creek 152 Comment
  RSA757866  Carex subbracteata P. F. Zika 2009-6-15 24494 Humboldt Above route 299, 2.3 road miles west of junction with Chezen Road. 680 Comment
  HSC7083  Carex tumulicola H. E. Parks, J. P. Tracy 1935-6-16 11270 Humboldt Buck Mtn. 793 Comment
  UC197252  Carex utriculata Joseph P. Tracy 1914-7-4 4534 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  JEPS100923  Carex vesicaria var. major Dean W. Taylor 1991-8-15 12278 Humboldt Snow Camp Lake 1310 Comment
  JEPS79840  Carex vesicaria var. major Joseph P. Tracy 1934-7-13 13388 Humboldt Dow's Prairie 60 Comment
  UC1056035  Carex viridula var. viridula H. E. Parks September 1935 5214 Humboldt Dry Lagoon Comment
  UC1103605  Carex viridula var. viridula Joseph P. Tracy 1934-10-21 13693 Humboldt in front of South End Stone Lagoon (Dry Lagoon) 3 Comment
  UC198585  Carpobrotus chilensis Joseph P. Tracy 1916-4-9 Humboldt n of Samoa (Ocean Beach at Humboldt Bay); Northern Coast Region, Humboldt Bay Comment
  RSA170321  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie on ridge 1 mile north above Bull Creek, about 2 miles west of Dyerville Comment
  SEINET12027436  Castanopsis chrysophylla J. P. Tracy 1950-1 19239 Humboldt Grouse Mtn 1524 Comment
  HSC45089  Castilleja affinis subsp. litoralis R. Sutherland 1978-4-25 11 Humboldt Bluff at Shelter Cove. 27 Comment
  HSC59736  Castilleja affinis subsp. litoralis Clark L. Miller 1979-5-13 6127 Humboldt N of Trinidad along Patricks Point Dr. Comment
  JEPS103931  Castilleja affinis subsp. litoralis T. I. and F. M. Chuang 1991-7-8 7874 Humboldt Ca 2 mi SW of Orick. Comment
  UC1196856  Castilleja affinis subsp. litoralis Joseph P. Tracy 1927-8-14 8332 Humboldt n end Big Lagoon (hills) 152 Comment
  JEPS93175  Castilleja ambigua subsp. humboldtiensis Margriet Wetherwax and Kevin Downing 1993-8-9 2455 Humboldt just n Eureka (s side of Eureka Slough, e side of Humboldt Bay, near Bayside Rd and Myrtle, just past Pigeon Point, e side of road); Humboldt Bay 5 Comment
  UC1222799  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1950-6-17 18839 Humboldt Eureka slough at the railroad bridge Eureka Comment
  UC1011932  Castilleja applegatei subsp. pinetorum F. W. Pennell and J. P. Tracy 1940-7-7 26097 Humboldt w of Salyer; Grouse Mountain 1493 Comment
  JEPS3813  Castilleja arachnoidea Joseph P. Tracy 1935-7-24 14171 Humboldt near Trinity Summit Ranger Station; Trinity Summit 1828 Comment
  HSC20838  Castilleja attenuata R. T. Forester 1963-5-6 43 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  UC168996  Castilleja attenuata Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  UC582576  Castilleja foliolosa Joseph P. Tracy 1934-7-9 13329 Humboldt 5 mi s Harris; Mail Ridge 762 Comment
  RSA518654  Castilleja litoralis L. R. Heckard, T. I. Chuang 1971-7-1 2667 Humboldt Slope at south end of Freshwater Lagoon, 2 miles southwest of Orick. Comment
  HSC44563  Castilleja miniata Brad Klipfel 1973-7-15 183 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55994  Castilleja miniata Overton, Butler 1979-7-31 11425 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC1173699  Castilleja miniata Joseph P. Tracy 1939-8-20 16429 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  UC176983  Castilleja pruinosa Joseph P. Tracy 1912-7-31 3931 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  HSC103246  Castilleja pruinosa Lisa D. Hoover 1996-6-12 145 Humboldt Six Rivers National Forest, Lower Trinity District, Grouse Mtn. Quad, Horse Mtn. 1463 Comment
  UC26521  Castilleja subinclusa subsp. franciscana H. N. Bolander 1866-5-24 4815 Humboldt near Little River; Anderson Valley Comment
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Jun 1 2015
  UC26525  Castilleja subinclusa subsp. franciscana unknown 4815 Humboldt near Little River Comment
  SEINET10582751  Castilleja wightii subsp. rubra Rimo Bacigalupi, Lawrence R. Heckard 1964-7-27 Bacigalupi 8962 Humboldt Shaded bend of road just (1/8 mile) above and east of Shelter Cove. On partly shaded n.-facing road bank. Comment
  HSC40666  Ceanothus cordulatus Thomas W. Nelson, Jane P. Nelson 1976-7-1 2933 Humboldt Along 5E27 at its junction with 1S07 1555 Comment
  CDA35561  Ceanothus cuneatus subsp. cuneatus Gordon Leppig 1998-6-1 877 Humboldt Horse Mountain. Titlow Hill Road. Comment
  UC33617  Ceanothus cuneatus var. cuneatus Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  UC275318  Ceanothus foliosus Joseph P. Tracy 1923-6-20 6322 Humboldt Chamisal Mountain, near Shelter Cove 304 Comment
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Aug 4 2016
  HSC101664  Ceanothus foliosus var. foliosus J. P. Smith, J. O. Sawyer 2011-4-23 13125 Humboldt Kings Peak Road, 2.4 miles from its junction with Shelter Cove Rd 552 Comment
  HSC37598  Ceanothus foliosus var. foliosus R. Sutherland 1975-7-4 0 .4775 Humboldt 640 Comment
  RSA600899  Ceanothus foliosus var. foliosus Louis C. Wheeler 1959-8-1 7619 Humboldt Queens Peak Mine. Comment
  CAS-BOT-BC50041  Ceanothus incanus C. Hart Merriam 1920-8-30 s.n. Humboldt South Fork Eel River near Garberville (near old bridge) Comment
  CAS-BOT-BC50052  Ceanothus incanus H. E. McMinn 1922-8-3 382 Humboldt South Fork Eel River Comment
  CAS-BOT-BC63683  Ceanothus integerrimus M. S. Jussel 1931-5-2 115 Humboldt Garberville. Comment
  JEPS42112  Ceanothus integerrimus Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie Comment
  UC18348  Ceanothus integerrimus Harley P. Chandler 1901-6-1 1338 Humboldt Campbell Creek North Coast Ranges (Hupa Indian Reservation,) 152 Comment
  SEINET13945948 Image available Ceanothus integerrimus D. E. Anderson 1965-1 3657 Humboldt At W end of bridge over Trinity River, ca 1/2 mi S of Willow Creek; T6N R5E SEC32 Comment
  RSA46885  Ceanothus integerrimus var. californicus Doris K. Kildale 1926-4-25 1813 Humboldt Hoopa Mt. Comment
  HSC37604  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 6 .11775 Humboldt Along county rd. 259 Comment
  RSA136480  Ceanothus oliganthus var. sorediatus Joseph P. Tracy 1918-5-1 4902 Humboldt Kneeland Prairie. 762 Comment
  UC1193284  Ceanothus oliganthus var. sorediatus P. Zinke 1950-10-4 173 Humboldt w ridge Brushy Mt. (1.5 mi fron ocean.); Quad. 28D2 914 Comment
  HSC43185  Ceanothus parryi R. Sutherland 1975-4-22 1 .22475 Humboldt County rd. near China Creek 204 Comment
  HSC43246  Ceanothus parryi R. Sutherland 1975-7-5 8 .5775 Humboldt 244 Comment
  HSC41241  Ceanothus pumilus Brad Klipfel 1974-5-27 380 Humboldt Horse Mtn. Comment
  BLMAR673  Ceanothus thyrsiflorus Jennifer Wheeler 2013-6-7 673 Humboldt King range, Strawberry Rock 21 Comment
  CAS-BOT-BC52219  Ceanothus thyrsiflorus Doris K. Kildale 1926-6-18 2399 Humboldt Gold Bluffs Comment
  HSC45481  Ceanothus thyrsiflorus Maralyn O'Meara 1973-2-9 127 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  RSA25754  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11089 Humboldt Summit of Trinidad Head. 46 Comment
  RSA301654  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 4343 Humboldt Summit of Trinidad Head. 46 Comment
  RSA600896  Ceanothus thyrsiflorus Louis C. Wheeler 1959-8-1 7618 Humboldt Queens Peak Mine. Comment
  HSC18343  Ceanothus velutinus P. W. Shields May 1955 Humboldt 7 mi W of Hoopa Comment
  HSC37062  Ceanothus velutinus R. Sutherland 1975-5-30 1 .30575 Humboldt 320 Comment
  UC1119132  Centaurea melitensis H. L. Person 1932-7-23 Humboldt road e of Korbel; Eureka Quadrangle Comment
  RSA424591  Centaurea solstitialis Thomas S. Elias, Barbara A. Elias 1987-8-26 10626 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge Comment
  UC604648  Centaurium erythraea Joseph P. Tracy 1938-7-18 16085 Humboldt 4 mi se Arcata; Fickle Hill 365 Comment
  RSA69802  Centaurium muehlenbergii F. W. Peirson 1941-7-29 13110 Humboldt Stephens Grove State Park. Comment
  HSC98319  Cephalanthera austiniae T. Jimerson, J. Pageau 1979-6-12 529 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  UCSB1850  Cerastium glomeratum Parks, H.; Parks, S. 1944-04 Humboldt Spruce Cove, Trinidad 60 Comment
  SFV18532  Cerastium glomeratum H. Barnes 2002-5-4 39 Humboldt McKinleyville. Hiller Park. Hammond Trail, 0.2 km north from parking lot. 25 Comment
  HSC2136  Cercis occidentalis Doris K. Kildale 1926-5-2 1909 Humboldt Willow Creek Comment
  HSC60028  Cercis occidentalis M. A. Baker 1977-6-6 369 Humboldt Hoopa Comment
  CAS-BOT-BC85655  Chamaecyparis lawsoniana Doris K. Kildale 1927-7-3 3640 Humboldt Willow Creek Flat 152 Comment
  HSC104102  Chamaecyparis lawsoniana Monica Rodriguez, William A. Worley 2015-3-21 21 Humboldt Along South Fork Rd, 8.3 mi. from 199 Redwood Hwy. Comment
  HSC26872  Chamerion angustifolium subsp. circumvagum Clifton Raymond Chesbrough 1973-6-19 97 Humboldt 1/2 mi. N of College Cove along the coast Comment
  UC1222586  Chenopodium ambrosioides Joseph P. Tracy 1950-9-22 19377 Humboldt near Slate Creek (8 mi below Orleans); Klamath River 121 Comment
  SEINET10479107  Chenopodium atrovirens Mary Susan Taylor 1982-10-24 Taylor 5178 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  SEINET4558631  Chenopodium atrovirens Joseph P. Tracy 1932-1 10500 Humboldt Local along trail 1585 Comment
  HSC55025  Chimaphila menziesii Overton, Butler 1979-7-31 11440 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC102198  Chimaphila umbellata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1112 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  SEINET3992219  Chlorogalum pomeridianum Unknown 1946-7-7 17611 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC236916  Chloropyron maritimum subsp. palustre A. A. Heller 1924-7-21 13867 Humboldt Salt marsh at Eureka Comment
  HSC100429  Chrysanthemum leucanthemum Carl C. Marshall Jun 1885 130 Humboldt Jarnigan's and mouth of Mad River. Comment
  POM87953  Chrysanthemum leucanthemum L. R. Abrams, R. C. Bacigalupi 1922-6-25 8262 Humboldt Between Trinidad and Big Lagoon Comment
  CAS-BOT-BC36479  Chrysolepis chrysophylla Carl B. Wolf 1930-10-30 1786 Humboldt Old Coast Road at Thorn 304 Comment
  CAS-BOT-BC36486  Chrysolepis chrysophylla Joseph P. Tracy 1940-8-25 16715 Humboldt Bald Mountain 975 Comment
  UC519307  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  UC667994  Chrysolepis sempervirens Joseph P. Tracy 1937-7-29 15585 Humboldt summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UC906758  Cicendia quadrangularis Joseph P. Tracy 1942-5-16 17342 Humboldt Garberville 152 Comment
  UC1198647  Cicendia quadrangularis Joseph P. Tracy 1930-5-18 8696 Humboldt Rohnerville Golf Course 152 Comment
  JEPS155  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt s of Salmon Creek Comment
  UC154219  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
  JEPS31552  Circaea alpina subsp. pacifica Lincoln Constance 1934-5-31 742 Humboldt from w. boundary of park to Grasshopper Peak (Squaw Creek rd., Bull Creek flat along Bull Creek, n. side of creek, Bull Creek Region); Bull Creek Region Comment
  UCD20404  Circaea alpina subsp. pacifica Donald C. Hagar 1957-8-27 218 Humboldt 8.5 miles NE of Hoopa, Domingo Block 'e'. 1371 Comment
  JEPS59187  Cirsium arvense W. L. Jepson 1936-8-17 17927 Humboldt 3 mi s Fields Landing Comment
  CAS-BOT-BC284404  Cirsium arvense L. R. Abrams 1927-8-31 12059 Humboldt Arcata 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
  SEINET200852  Cirsium edule J. C. Fario Jr 1940-6-14 sn Humboldt Bear River Ridge 610 Comment
  CAS-BOT-BC285531  Cirsium occidentale var. candidissimum Doris K. Kildale 1928-6-24 5275 Humboldt Horse Mountain 914 Comment
  HSC94090  Cirsium occidentale var. venustum B. Villegas 1998-8-5 Humboldt Nr. Berry Summit on Titlow Hill Rd, 3.9 mi. S of Hwy. 299 Comment
  UCD148530  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt near Berry Summit on Titlow Hill Road, 3.9 miles south of Highway 229. Comment
  CAS-BOT-BC288715  Cirsium remotifolium L. R. Abrams 1916-7-18 6081 Humboldt Arcata to Trinidad Comment
  CAS-BOT-BC288717  Cirsium remotifolium Doris K Niles 1948-7-26 4 Humboldt Eel River bottom, A. D. Niles Field Comment
  UC582538  Cirsium remotifolium var. rivulare Joseph P. Tracy 1934-7-6 13659 Humboldt Kneeland Prairie 762 Comment
  HSC76337  Cirsium vulgare Michael Ericksen 1981-8-20 1076 Humboldt Near Van Duzen Public Campground 1000 Comment
  HSC16236  Clarkia amoena J. P. Tracy 1938-6-17 15957 Humboldt Cape Mendocino, S of point of the Cape 3 Comment
  UC56304  Clarkia amoena Joseph Burtt Davy 1899-6-16 5562 Humboldt Alton Comment
  CAS-BOT-BC160964  Clarkia amoena subsp. amoena Peter H. Raven; R. Snow 1958-7-21 13656 Humboldt 7.2 miles north-west of Capetown on road to Ferndale Comment
  UC183702  Clarkia amoena subsp. amoena Joseph P. Tracy 1912-7-26 3857 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC160947  Clarkia amoena subsp. amoena Roxana S. Ferris 1937-8-21 9385 A Humboldt Above terrace at Shelter Cove Comment
  RSA0059976  Clarkia amoena subsp. huntiana Harlan Lewis, M. Lewis 1947-6-12 424 Humboldt U.S. Highway 101, 4.8 miles north of Ohman Creek Bridge (4-07) Comment
  CAS-BOT-BC164178  Clarkia concinna Doris K. Kildale 1927-5-17 3179 a Humboldt Fish Creek near Garberville Comment
  UC562522  Clarkia concinna subsp. concinna Joseph P. Tracy 1936-6-10 14927 Humboldt mountain slopes w of mouth South Fork Trinity River 457 Comment
  SEINET200783  Clarkia gracilis subsp. tracyi Joseph P. Tracy 1931-6-28 9597 Humboldt Buck Mountian, lower foothills of its northwest slope. 762 Comment
  UC562526  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1936-6-10 14924 Humboldt mountain slopes w of mouth South Fork of Trinity River 457 Comment
  CAS-BOT-BC172389  Clarkia purpurea subsp. viminea Doris K. Kildale 1927-6-25 3584 Humboldt Near Ettersburg Comment
  JEPS127652  Claytonia Jurriaan M. de Vos 2014-7-1 300 Humboldt Along Bald Hills Road, near Dolason trail head parking. Comment
  HSC67189  Claytonia exigua subsp. exigua Thomas W. Nelson, James Nelson 1980-6-10 5425 Humboldt Along NE side of Red Mtn. 1433 Comment
  HSC99412  Claytonia parviflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 61 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  CAS-BOT-BC440094  Claytonia perfoliata subsp. perfoliata Doris Kildale 1931-5-10 10547 Humboldt Snow Camp Comment
  HSC17697  Claytonia rubra subsp. depressa D. E. Anderson 1962-3-4 1926 Humboldt About 2 mi. S of Trinidad Comment
  UC1136740  Claytonia sibirica H. L. Person 1932-8-8 Humboldt Freshwater; Eureka Quad. Comment
  UC1223253  Claytonia sibirica Joseph P. Tracy 1951-6-14 19414 Humboldt Snow Camp Comment
  CAS-BOT-BC443900  Claytonia sibirica David D. Keck 1948-7-2 6004 Humboldt E. side Rocky Ridge, E. of Berry's Summit, 8.5 mi. W. of Willow Creek, 1/4 mi. W. of boundary of Six Rivers Nat. For. 762 Comment
  HSC45613  Claytonia sibirica Diane L. Reed 1978-5-7 56 Humboldt Fourmile Creek on Friday Ridge Rd., 4 mi. from Hwy. 299 Comment
  CHSC42782  Clintonia andrewsiana R. N. Raynor 1935-5-22 Humboldt Ft. Seward. Comment
  UC41802  Collinsia grandiflora W. C. Blasdale 1896-6-7 Humboldt Kneeland's Comment
  HSC96243  Collinsia linearis Laurel Goldsmith, Wanda Naylor 2005-6-8 4 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 980 Comment
  HSC45793  Collinsia parviflora J. P. Smith, J. O. Sawyer 1973-5-12 6691 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC48744  Collinsia parviflora Brad Klipfel 1973-6-10 80 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA0117229  Collinsia rattanii S. S. Tillett 1956-7-6 623 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  UC1196824  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1904-4-3 2007 Humboldt immed. vicinity Eureka 0 Comment
  UC1196850  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3628 Humboldt near Hydesville (hillside between Alton and Hydesville); Northern Coast Region 30 Comment
  HSC81772  Collinsia torreyi var. torreyi Thomas W. Nelson, James Nelson 1980-6-10 5409 Humboldt Along Swayback Ridge 4-wheel drive road, 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  UC52837  Collomia grandiflora Joseph Burtt Davy and Walter C. Blasdale 1899-5 5770 Humboldt hills around Hoopa Valley 304 Comment
  HSC70375  Collomia heterophylla M. A. Baker 1980-6-7 1780 Humboldt Near Brush Mtn. 287 Comment
  UC1197851  Collomia heterophylla Joseph P. Tracy 1911-6-4 3225 Humboldt along river 5 mi from coast; Northern Coast Region, Little River 121 Comment
  UC133646  Collomia heterophylla Joseph P. Tracy 1909-7-31 3044 Humboldt in woods on hillside Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC97228  Collomia tinctoria Kiera A. Freeman, Heather J. Perry 2007-6-11 6 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  UC978531  Collomia tracyi Joseph P. Tracy Jul 16 1930-Jul 19 1930 9046 Humboldt open glades 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
  UCR275122  Conium maculatum Charity A. Hartshorn 2016-4-24 19 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  HSC6349  Convolvulus arvensis H. D. Sumner 1959-7-20 Humboldt West End Rd. along the Mad River 3 Comment
  JEPS41827  Conyza canadensis W. L. Jepson 1936-8-13 17897 Humboldt Philipsville South Fork Eel River Comment
  CAS-BOT-BC181556  Coptis laciniata Charlotte M. Hoak 1931-7-12 s.n. Humboldt Noyo, Northspur, 2nd bench back, southern limit Prairie Camp Comment
  HSC73022  Corallorhiza maculata Gail Newton 1980-8-10 2028 Humboldt Near Blake Mtn. 1798 Comment
  HSC16586  Corallorhiza maculata Doris K. Kildale 1926-5-2 1845 Humboldt Bald Mtn. road, between Bald Mtn. House and junction of Redwood Creek Road. Comment
  HSC37178  Corallorhiza striata Rudolf W. Becking 1976-5-7 Humboldt 1 mi.. E of Blue Lake in Simpson Demonstration Forest, just off Hwy. 299 Comment
  HSC63024  Corallorhiza striata M. A. Baker 1979-6-24 903 Humboldt 2 km. S of Brush Mtn. Comment
  RSA244999  Cordylanthus maritimus subsp. palustris William J. Ferlatte, B. D. Rogers 1966-8-15 3125 Humboldt 6 miles east of Korbel; Cutoff Red wood Comment
  HSC100233  Cordyline australis J. P. Smith 2010-5-29 12890 Humboldt Eureka. Abandoned railroad right-of-way along Railroad Ave., just south of its junction with West 14th. 2 Comment
  UC1223037  Corethrogyne filaginifolia J. P. Tracy 1950-6-18 18764 Humboldt 1 mi w of town Petrolia Comment
  UC1601151  Corethrogyne filaginifolia Joseph P. Tracy 1934-7-21 13474 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC1222617  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  HSC100454  Cornus pubescens Carl C. Marshall Jun 1886 322 Humboldt Mad River. Comment
  UC161494  Coronopus didymus Joseph P. Tracy 1901-7-31 1234 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC535724  Corylus californica Eleanor Armstrong 1934-8-23 1137 Humboldt Richardson Grove, E slope 121 Comment
  UCD110083  Corylus cornuta subsp. californica M. Risling 1975-2-15 s.n. Humboldt ca. 3 miles from Hwy 96, along Tish Tang Road. Comment
  HSC37853  Cotula coronopifolia Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  SEINET3817853  Cotula coronopifolia C. L. Hitchcock, J. S. Martin 1939-7-14 5434 Humboldt Pool on cliff above pier at shelter cove Comment
  CAS-BOT-BC291343  Cotula coronopifolia H. E. Parks 1941-9-1 24211 Humboldt Little River State Park Comment
  SDSU3877  Cotula coronopifolia Harvey 1938-8-13 2279 Humboldt North of Arcata. Comment
  UC1763986  Crataegus monogyna P. F. Zika 1995-5-1 12314 Humboldt 0.5 mi E of Ferndale (S of Grizzly Bluff Rd., S of and above cemetary) 60 Comment
  HSC57409  Crepis acuminata G. L. Clifton, Griswold 1979-7-26 10167 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  JEPS25619  Crepis capillaris Rimo Bacigalupi 1959-7-7 7252 Humboldt immediately behind bluff headland of Cape Mendocino (and just n of road summit at this point, along roadside ditch) 30 Comment
  HSC5927  Crepis capillaris J. L. Baker 1965-4-13 46 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  CAS-BOT-BC376477  Crepis pleurocarpa Joseph P. Tracy 1935-7-28 14332 Humboldt Trinity Summit. Head of Brett Hole 1828 Comment
  RSA43685  Crepis setosa H. M. Pollard 1947-8-21 s.n. Humboldt roadside between Orleans and Boyse Creek Comment
  UC1225821  Crepis setosa Joseph P. Tracy 1947-7-13 17769 Humboldt Hors-Linto Creek; near mouth 152 Comment
  UCD130992  Crocidium multicaule Roman Gankin; W. R. Hildreth 1966-3-15 700 Humboldt Klamath River canyon, State Highway 96, 4.6 miles north of Hoopa. Comment
  UC1222677  Crocosmia X crocosmiiflora Joseph P. Tracy 1950-8-31 19344 Humboldt Eureka; at 3rd and I Streets Comment
  HSC58175  Cryptantha affinis G. L. Clifton, Griswold 1979-8-2 12257 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC99133  Cryptantha affinis Cara Witte 2007-5-29 139 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile south of cattle guard. 1369 Comment
  UC32552  Cryptantha flaccida Hy-Am Pum Jul 1888 Humboldt Comment
  JEPS67641  Cryptantha intermedia Harley P. Chandler Jun 1901 1302 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  JEPS67665  Cryptantha intermedia W. L. Jepson 1902-7-14 2025 Humboldt Hupa Valley Comment
  HSC102133  Cryptogramma acrostichoides M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1037 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC63992  Cupressus lawsoniana Mrs. M. H. Manning 1901-10-1 Humboldt near Hupa (Redwood trail) 762 Comment
  HSC98680  Cuscuta californica Cara Witte 2008-7-2 793 Humboldt National Forest Road 1; 5 miles south of intersection with 5N04. Before cattle guard crossing. 1406 Comment
  HSC57637  Cuscuta occidentalis G. L. Clifton, Griswold 1979-7-25 10796 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC6395  Cuscuta subinclusa J. P. Tracy 1924-7-20 6736 Humboldt Brannan Mtn. on Willow Cr. Rd. 1006 Comment
  HSC3642  Cynoglossum grande Francis Winter 1960-4-23 Humboldt 1.5 mi. E of Korbel, on Korbel-Maple Creek Rd. 61 Comment
  UC1222257  Cynoglossum occidentale Joseph P. Tracy 1948-8-15 18121 Humboldt on Ridge 2 mi. e. Grove's Prairie (Trinity Summit Rd. high point); Trinity Summit 1524 Comment
  BLMAR33  Cynosurus echinatus Brad Barr June, 1982 33 Humboldt King range, Lake ridge south facing slope Comment
  HSC97497  Cynosurus echinatus Cara Witte 2007-5-31 153 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  RSA44473  Cynosurus echinatus Henry M. Pollard 1948-7-17 s.n. Humboldt Orleans. Comment
  UC668029  Cyperus bipartitus Joseph P. Tracy 1931-9-7 9664 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  UC535738  Cyperus eragrostis Eleanor Armstrong 1157 Humboldt Richardson Grove Comment
  RSA53852  Cyperus eragrostis Henry M. Pollard 1945-8-27 s.n. Humboldt Pond near Harley Place, near Orleans. Comment
  POM160839  Cyperus squarrosus Joseph P. Tracy 1920-8-15 5362 Humboldt Klamath River at Bluff Creek. 152 Comment
  CAS-BOT-BC133727  Cypripedium californicum E. P. Chase 1933-7-1 2008 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  HSC36651  Cypripedium californicum J. D. Ackerman 1975-6-18 469 Humboldt 2.7 mi E of Berry Summit, Hwy. 299 W of Willow Creek . Comment
  JEPS79882  Cypripedium californicum Joseph P. Tracy 1926-6-27 7669 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  UC1196445  Cypripedium montanum D. F. Young 1924-4-26 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC55131  Cystopteris fragilis G. L. Clifton, Griswold 1979-8-1 11958 Humboldt Near Mill Creek, close to the town of Hoopa 1707 Comment
  HSC98728  Cystopteris fragilis Cara Witte 2007-7-20 563 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1460 Comment
  HSC89445  Cytisus scoparius P. A. Daly 1984-5-13 20 Humboldt Along trail at Trinidad Head 61 Comment
  SEINET12152438  Cytisus scoparius J. P. Tracy 1950-1 18830 Humboldt Eureka Comment
  RSA728077  Dactylis glomerata Gary D. Wallace 1979-6-24 1859 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek; near Honker Timber scale (?), near lookout. 1216 Comment
  UC1541567  Dactylis glomerata Harold E. Parks May 1933 4307 Humboldt Spruce Cove Trinidad; Spruce Cove Comment
  UCD60692  Danthonia californica var. americana A. A. Beetle; G. L. Stebbins Jr. 1942-6-2 3474 Humboldt 4 miles north of Bridgeville. Comment
  SEINET10598361  Danthonia intermedia Joseph P. Tracy 1934-7-18 Tracy 13421 Humboldt Grouse Mountain, wet meadow. 1524 Comment
  CAS-BOT-BC194369  Danthonia unispicata Joseph P. Tracy 1926-6-20 7611 Humboldt Horse Mountain 1402 Comment
  HSC104098  Darlingtonia californica Monica Rodriguez, William A. Worley 2015-3-21 24 Humboldt Along South Fork Rd, 8.9 mi. from 199 Redwood Hwy. Comment
  UC1197350  Daucus pusillus J. P. Tracy 1901-7-29 1228 Humboldt immediate vicinity Eureka (hillside in Connick's Field) 0 Comment
  UC1197353  Daucus pusillus Harley P. Chandler May, 1901 1154 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  RSA68806  Delphinium decorum subsp. tracyi Joseph P. Tracy 1932-7-12 10486 Humboldt Head of Brett Hole 1829 Comment
  UCR45825  Delphinium decorum subsp. tracyi N. Meiselman, M. Bransom, D. Brown, Ron Hildebrandt 1986-4-19 26 Humboldt North Coast Range, Horse Mountain, 0.5 mi. down Titlow Road from Ski Area 1372 Comment
  RSA259575  Delphinium decorum subsp. tracyi Thomas W. Nelson 1974-5-7 1236 Humboldt Kneeland Road, 1/2 mile N of the Kneeland School Comment
  UCD95863  Delphinium hesperium Joseph P. Tracy 1948-6-20 18070 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  JEPS23323  Delphinium hesperium subsp. hesperium Milo S. Baker 1923-7-29 147 Humboldt Lawrence Creek, east of Carlotta and Fortuna Comment
  HSC95728  Delphinium nudicaule Steven Lee 2004-4-26 30 Humboldt Horse Mtn., 4 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  UC249530  Delphinium nudicaule Joseph P. Tracy 1922-4-30 6012 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC89622  Delphinium nudicaule Pat Daly, Rudy Galindo 1988-3-12 5 Humboldt S Fork Trail of Trinity River, trailhead 12.4 mi. up S Fork Rd. from Hwy. 299 457 Comment
  SD37307  Delphinium nudicaule Marie Cummings 1933-5-22 109 Humboldt Near Blockburg Comment
  JEPS8447  Delphinium nuttallianum Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3411 Humboldt 0.5 mi w Snow Camp (ridge between Mad River and Redwood Creek); Bald Mountain ridge 1432 Comment
  RSA20971  Delphinium trolliifolium Carl B. Wolf 1937-6-14 8827 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  UC1222574  Delphinium trolliifolium Joseph P. Tracy 1950-6-15 18816 Humboldt ne side of ridge Mail Ridge, Huestis Rock (7 mi n of Harris) 822 Comment
  CAS-BOT-BC121963  Delphinium trolliifolium Mrs. H. C. Cantelow 1941-4-19 s.n. Humboldt 8.4 miles SW of Ferndale on road to Cape Mendocino. Comment
  HSC45269  Delphinium trolliifolium M. Alcasas 1978-6-3 122 Humboldt Titlow Hill Rd. 0.8 mi. from Hwy. 299 1113 Comment
  UC187264  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1904-7-31 2129 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UC526669  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1927-7-16 8257 Humboldt mouth of Elk R.; Northern Coast Region, around Humboldt Bay, Elk R. 6 Comment
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Sep 27 2007
  UC637044  Deschampsia cespitosa subsp. beringensis Edward Lee 1934-8-17 1153 Humboldt 35 mi. n. Eureka (e. shore of Big Lagoon); Big Lagoon 3 Comment
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Sep 27 2007
  LA10879  Deschampsia danthonioides Joseph P. Tracy; 1935-6-23 13969 Humboldt 1066 Comment
  UC1131441  Deschampsia danthonioides H. S. Yates 1936-6-17 5718 Humboldt Burr Valley South Fork Peak Quad., Burr Valley Comment
  UCD114654  Descurainia incisa subsp. incisa Joseph P. Tracy 1947-8-24 17921 Humboldt Trinity Summit, near Box Camp, along trail to Waterdog Lakes. 1676 Comment
  HSC56461  Dianthus armeria Griswold, Butler 1979-7-12 7249 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC8363  Dicentra formosa R. J. Vernimen 1963-3-25 17 Humboldt Clam Beach Lagoons Comment
  CAS-BOT-BC402409  Dicentra formosa subsp. formosa Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC99360  Dicentra formosa subsp. formosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 9 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1005674  Dichelostemma capitatum Frank W. Gould 1939-5-30 838 Humboldt about 25 mi due e Eureka (near top of Horse Mountain); Horse Mountain 1100 Comment
  UC15031  Dichelostemma capitatum P. E. Goddard 1901-7-8 33 Humboldt Hupa Comment
  HSC3000  Dichelostemma capitatum subsp. capitatum Paul Shields May 1955 Humboldt Horse Mountain Comment
  HSC97477  Dichelostemma capitatum subsp. capitatum Cara Witte 2007-5-21 65 Humboldt White Oak Opening. 1257 Comment
  CAS-BOT-BC501014  Dichelostemma ida-maia Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC501029  Dichelostemma ida-maia Peter H. Raven; R. Snow 1958-7-20 13638 Humboldt 2.0 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Mountain Comment
  UC1198172  Dichelostemma multiflorum Joseph P. Tracy 1939-4-29 16233 Humboldt near Weitchpec (along Trinity River); Trinity River 121 Comment
  UC15035  Dichelostemma multiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5632 Humboldt Hoopa Mt. North Coast Ranges, North Fork Trinity River Comment
  RSA183603  Digitalis purpurea R. D. Modafferi 1965-5-13 75 Humboldt 0.2 miles north of Trinidad on Trinity Street. 305 Comment
  CAS-BOT-BC150344  Diplacus aurantiacus C. C. Harris; S. K. Harris 1936-6-9 s.n. Humboldt Above Carlotta 60 Comment
  SEINET13768897 Image available Diplacus aurantiacus C. L. Hitchcock, J. S. Martin 1939-1 5439 Humboldt Shelter Cove Comment
  SEINET8245388  Diplacus kelloggii Unknown 1942-5-12 2894 Humboldt at junction of Klamath and Salmon rivers, 1 mile south of Somes Bar. 152 Comment
  CAS-BOT-BC153325  Diplacus layneae Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. Trail 1524 Comment
  UC1409176  Dipsacus fullonum Robert F. Thorne and P. Everett 1965-8-9 35282 Humboldt 2.5 mi n Arcata Comment
  POM277211  Disporum hookeri var. hookeri Lyman Benson 1929-7-16 1840 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  UC535741  Disporum smithii Eleanor Armstrong 1169 B Humboldt Richardson Grove Comment
  RSA183538  Disporum smithii H. S. Logsdon 1964-5-10 2 Humboldt 4.0 miles N.E. of Orick at Boye s Prairie Comment
  RSA520557  Disporum smithii Michael A. Hanson 1990-5-21 71 Humboldt Near Little Creek Trail in Redwood National Park; east side of Highway 101 approximately 7 miles (11 km) south of Klamath Comment
  UC519703  Disporum smithii Victor Duran 1933-5-12 3413 Humboldt Dyerville, South Fork of the Eel River South Fork Eel River; Dyerville, South Fork Eel River Comment
  HSC90915  Distichlis spicata Leonel Arguello 1989-7-15 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, Saltmarsh trail. Comment
  HSC9633  Distichlis spicata D. J. McVean 1965-5-22 83 Humboldt Along slough just W of Jackson Rd., 1/4 mi. N of Samoa Rd. Comment
  UC34066  Distichlis spicata J. P. Tracy 1900-7-4 869 Humboldt Samoa Comment
  HSC17861  Dodecatheon hendersonii R. A. Rasp 1964-4-5 26 Humboldt 5 mi. N of Hoopa on Willow Creek Rd. Comment
  HSC30147  Dodecatheon hendersonii A. M. Montalvo, J. D. Ackerman 1974-4-14 173 Humboldt Near Gray's Falls, Trinity River. Gray's Falls Campground Comment
  RSA183606  Dodecatheon hendersonii G. Bos 1965-5-15 278 Humboldt Berry Summit near U.S. 299. Growing in moss at base of Quercus. 793 Comment
  UCSB28097  Dodecatheon hendersonii Phelps, M. 1972-3-18 Humboldt 1.5 mi. from Garberville along Old Briceland Ed., 1,000 yds. north of roadside. 213 Comment
  UC1199495  Downingia elegans Joseph P. Tracy 1937-7-19 15462 Humboldt Larrabee Valley 731 Comment
  HSC58200  Draperia systyla Walter Overton 1979-8-1 12303 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1402 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
  HSC40707  Drosera rotundifolia J. P. Smith, T. Nelson, Robert M. Specht 1977-4-10 9015 Humboldt SE of Hwy. 101 at the SW end of the bridge over Big Lagoon. Comment
  UC203639  Drosera rotundifolia Joseph P. Tracy 1918-7-21 5084 Humboldt Humboldt Hill Northern Coast Ranges, Region about Humboldt Bay (small bog on n slope) 91 Comment
  UC1198694  Drymocallis glandulosa Joseph P. Tracy 1910-6-19 3154 Humboldt region about Humboldt Bay (near Forks of Elk River); Northern Coast Region, near Forks Elk River 0 Comment
  UC492182  Drymocallis glandulosa var. wrangelliana Joseph P. Tracy 1927-5-30 8088 Humboldt Briceland Northern Coast Ranges, Briceland 182 Comment
  CAS-BOT-BC157794  Drymocallis lactea var. lactea Joseph P. Tracy 1932-7-11 10406 Humboldt At Corral Prairie 1524 Comment
  UC528082  Dryopteris arguta Ira L. Wiggins 1932-6-18 5872 Humboldt hillside at mouth of Little River Comment
  JEPS49929  Dudleya farinosa W. L. Jepson 1902-8-4 2144 Humboldt Cape Mendocino 1 Comment
  HSC7296  Dulichium arundinaceum J. P. Tracy 1938-9-25 16173 Humboldt Bald Mtn., 'Lake Prairie 1067 Comment
  SEINET3910832  Eleocharis macrostachya Thomas Nelson 1977-9-22 3749 Humboldt Eureka Quad. Along east side of State Route 101 just north of the Eureka Airport.; 0 Comment
  UC1103661  Eleocharis obtusa Joseph P. Tracy 1920-8-15 5365 Humboldt Klamath River at Bluff Creek Northern Coast Ranges Comment
  UC666880  Eleocharis pachycarpa H. E. Parks and Joseph P. Tracy 1931-6-7 9569 Humboldt Trinidad 60 Comment
  RSA246901  Eleocharis pachycarpa Robert F. Thorne, Percy C. Everett 1965-8-7 35190 Humboldt Big Lagoon. In bog at S end of lagoon. 2 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
  HSC98996  Eleocharis quinqueflora Cara Witte 2008-7-16 925 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  RSA246895  Eleocharis radicans Robert F. Thorne, Percy C. Everett 1965-8-9 35342 Humboldt Along Highway 101 about 3 miles north of Eureka. 2 Comment
  CAS-BOT-BC227347  Elymus elymoides Joseph P. Tracy 1930-7-16 8955 Humboldt South Fork Mountain; along summit near Blake Lookout 1706 Comment
  RSA10137  Elymus glaucus Joseph P. Tracy 1925-7-5 7167 Humboldt High Prairie, on Bald Mountain 1067 Comment
  HSC89898  Elymus glaucus subsp. glaucus Leonel Arguello 1989-7-14 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata. Comment
  SEINET249776  Elymus glaucus subsp. glaucus J. P. Tracy 1936-6-9 14889 Humboldt Bear River Lodge Comment
  BLMAR20  Elymus multisetus Brad Barr June, 1982 20 Humboldt King range, West facing slope of spanish ridge Comment
  CAS-BOT-BC234112  Elymus multisetus Joseph P. Tracy 1933-7-25 12893 Humboldt Grouse Mountain 1524 Comment
  UC33878  Elymus multisetus Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  CHSC110737  Enemion stipitatum Dean Wm. Taylor 2011-5-4 21117 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junction with Highway 36. 737 Comment
  SDSU8810  Epilobium angustifolium subsp. circumvagum D. F. Howe 1961-8-1 3102 Humboldt 6 miles north of Trinidad on #101. Comment
  UC1198485  Epilobium brachycarpum Joseph P. Tracy 1934-8-31 13648 Humboldt roadside Kneeland Prairie 762 Comment
  JEPS31530  Epilobium ciliatum subsp. ciliatum Lincoln Constance 1934-5-31 765 Humboldt Bull Cr. flat South Fork Eel River, Bull Creek region, Bull Creek (along n side of creek from w boundary of Park to Grasshopper Pk. (Squaw Cr. rd.)) Comment
  UC146135  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1909-7-31 3053 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC43235  Epilobium ciliatum subsp. ciliatum R. Sutherland 1976-8-19 3 .19876 Humboldt 259 Comment
  HSC44595  Epilobium hallianum Brad Klipfel 1973-7-15 191 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC75356  Epilobium minutum J. O. Sawyer, M. A. Ericksen 1980-7-18 3643 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  HSC44405  Epilobium minutum R. York 1978-5-6 157 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 Comment
  HSC67212  Epilobium minutum Thomas W. Nelson, James Nelson 1980-6-10 5441 Humboldt Along branch road off Swayback Ridge Rd., 1/2 mi. E of junction 1372 Comment
  RSA21093  Epilobium minutum Carl B. Wolf 1937-6-14 8821 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  UC594236  Epilobium minutum S. K. Harris and J. P. Tracy 1936-6-10 3263 Humboldt hills w South Fork of the Trinity River (near river mouth) 640 Comment
  POM168220  Epipactis gigantea Jos Burtt Davy, Walter C. Blasdale 1899-6-28 5895 Humboldt North Coast Ranges: Klamath River near Martins Ferry Comment
  UC535720  Epipactis gigantea Eleanor Armstrong 1934-7-17 1143 Humboldt near Eel River; Richardson Grove 121 Comment
  CAS-BOT-BC57231  Equisetum laevigatum H. E. Parks; Joseph P. Tracy 1927-4-24 7925 Humboldt Eureka 6 Comment
  UC1239787  Equisetum telmateia subsp. braunii Joseph P. Tracy 1909-3-7 2945 Humboldt immediate vicinity Eureka 0 Comment
  HSC888  Equisetum telmateia subsp. braunii J. E. Lankila 1962-5-31 31 Humboldt Back yard of house at 1728 Sunny Ave., Eureka Comment
  POM161049  Eragrostis hypnoides Joseph P. Tracy 1920-8-15 5367 Humboldt Klamath River, at mouth of Bluff Creek 152 Comment
  CAS-BOT-BC291178  Erechtites glomeratus L. R. Abrams 1916-7-18 6108 Humboldt Arcata to Trinidad, 18 mi along coast Comment
  RSA167387  Erechtites glomeratus Joseph P. Tracy 1950-9-10 19360 Humboldt Bear River Ridge, 1 mile north of Capetown. 305 Comment
  POM272117  Erechtites minimus Lyman Benson 1928-7-12 250 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  CDA42399  Erica lusitanica R. Robison 2014-5-5 s.n. Humboldt Trinidad State Beach, near Ewing Street access, across the street from planted yards. 0 Comment
  CAS-BOT-BC298297  Ericameria nauseosa var. speciosa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt 1524 Comment
  CHSC84686  Erigeron aliceae L. P. Janeway 2003-7-26 7924 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5 km northeast of the top of Grouse Mountain. 1554 Comment
  SEINET11851472  Erigeron annuus J. P. Tracy 1949-1 18585 Humboldt Eureka Comment
  CAS-BOT-BC293612  Erigeron biolettii Doris K. Kildale 1929-8-4 8777 Humboldt Mattole River at Union Mattole Comment
  CAS-BOT-BC308850  Erigeron glaucus W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  HSC39954  Erigeron glaucus Linda M. Barker 1976-6-22 1616 Humboldt 3 mi. W of Arcata Comment
  UC594158  Erigeron glaucus S. K. Harris 1936-6-15 3380 Humboldt Trinidad Head. Comment
  HSC81688  Erigeron maniopotamicus Thomas W. Nelson, James Nelson 1980-6-10 5395 Humboldt Jack Rabbit Valley, along Swayback Ridge 4-wheel drive road, 1 mi. S of junction with Forest Service road 1494 Comment
  SBBG63320  Erigeron philadelphicus J. R. and R. C. Robbins 1932-7-24 Humboldt S of Scotia Comment
  CDA4936  Erigeron philadelphicus Keith Miller, T. R. Haig 1960-6-13 4552 Humboldt 4 miles southeast of Carlotta 0 Comment
  UC127814  Erigeron philadelphicus var. philadelphicus Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5498 Humboldt near Camp Grant Comment
  UC169037  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1912-7-4 3725 Humboldt near Hydesville; Northern Coast Region 60 Comment
  JEPS82129  Erigeron philadelphicus var. philadelphicus Rimo Bacigalupi 1959-7-7 7250 Humboldt immediately behind bluff headland (just n of road summit at this point); Cape Mendocino 30 Comment
  UC581718 Image available Erigeron robustior J. P. Tracy 1932-6-26 10252 Humboldt Valley of South Yager Creek; ; valley of South Yager Creek, Humboldt Co. 762 Comment
  RSA44298  Eriodictyon californicum H. M. Pollard 1945-9-1 s.n. Humboldt Road to Redcap Creek. Comment
  UCSB1454  Eriogonum latifolium Parks, H. 1941-08 Humboldt Little River Comment
  HSC17292  Eriogonum latifolium D. E. Anderson 1962-7-4 2248 Humboldt Luffenholtz Beach 5 mi. S of Trinidad along old Hwy. 101, 2 mi. N of mouth of Little River Comment
  RSA766119  Eriogonum latifolium Arthur Menzies 1961-9-3 s.n. Humboldt Samon Comment
  CAS-BOT-BC259538  Eriogonum luteolum var. luteolum Joseph P. Tracy 1938-8-14 16120 Humboldt South Fork of Trinity River: mountain slopes west of its mouth 304 Comment
  UC6566  Eriogonum luteolum var. luteolum C. C. Marshall 1888-1 Humboldt Comment
  HSC54526  Eriogonum nudum Overton, Butler 1979-7-23 9464 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  HSC74306  Eriogonum nudum M. A. Baker 1980-7-24 3204 Humboldt Near Orleans Mtn. 1625 Comment
  CAS-BOT-BC269866  Eriogonum nudum var. pubiflorum Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  HSC32550  Eriogonum umbellatum var. nelsoniorum Thomas W. Nelson 1973-7-10 1032 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  HSC39231  Eriogonum umbellatum var. nelsoniorum D. E. Anderson, J. P. Smith 1971-7-6 - 1281 Humboldt Horse Mtn. Comment
  UCR37846  Eriogonum umbellatum var. nelsoniorum Walter C. Overton, Marvin Butler 1979-7-26 9994 Humboldt North Coast Range, near Willow Creek, east fork, close to the town of Willow Creek 1341 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
  HSC98924  Eriophorum crinigerum Cara Witte 2007-5-24 116 Humboldt Horse Mountain Botanical Area. Along Forest Service Rd. 6N38. Near Horse Mountain Mine. 1284 Comment
  HSC5590  Eriophyllum lanatum Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  JEPS34646  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1921-8-12 5934 Humboldt Big Lagoon Comment
  JEPS34606  Eriophyllum lanatum var. achilleoides W. L. Jepson 1915-6-8 6048 Humboldt Yankee Hill Columbia, Yankee Hill 762 Comment
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Feb 8 2020
  RSA92676  Eriophyllum lanatum var. arachnoideum F. W. Peirson 1926-7-12 7029 Humboldt West slope of Coast Range back of Orick. Comment
  UC1223128  Eriophyllum lanatum var. grandiflorum Joseph P. Tracy 1944-7-3 17480 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  UC129579  Eriophyllum lanatum var. lanceolatum Joseph Burtt Davy and Walter C. Blasdale 1899-6-20 5711 Humboldt Hoopa Valley Comment
  HSC8479  Erodium cicutarium R. J. Vernimen 1963-2-17 8 Humboldt Clam Beach Lagoon, along railroad tracks Comment
  HSC97471  Erodium cicutarium C. Witte 2007-5-10 20 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1368 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
  HSC6782  Erysimum menziesii J. W. Johnson 1962-3-9 1183 Humboldt Samoa Peninsula, on ridges as dune end of trail through Hunt Farm. Comment
  UCR179237  Erysimum menziesii R. G. Swinney 1968-4-3 240 Humboldt North Coast, Lanphere's Preserve, west of Arcata 15 Comment
  SEINET8229973  Erythranthe nasuta Joseph P. Tracy 1920-5-18 5379 Humboldt South Fork Eel River; from South Fork to Scotia; 4 miles above Dyerville. 61 Comment
  UC1197644  Erythronium californicum Joseph P. Tracy 1913-6-17 4184 Humboldt near summit; Northern Coast Ranges, Buck Mountain 1676 Comment
  UC1222542  Erythronium californicum Joseph P. Tracy 1950-4-20 18616 Humboldt two mi w Dinsmore's (lower foothills of nw slope of mountain); Buck Mountain 762 Comment
  UC175814  Erythronium californicum Joseph P. Tracy 1913-5-4 4058 Humboldt Ashfield Butte Northern Coast Ranges 762 Comment
  UC666966  Erythronium californicum Joseph P. Tracy 1927-3-27 7860 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC666962  Erythronium grandiflorum Joseph P. Tracy 1930-7-18 9037 Humboldt openings in forest near McKay Camp; South Fork Mountain 1676 Comment
  UCD139647  Erythronium oregonum Suzanne E. May 1967-4-15 24 Humboldt on Kneeland Road, 7 miles east of Bridgeville. 213 Comment
  JEPS61876  Erythronium revolutum Joseph P. Tracy 1918-5-1 4896 Humboldt Ashfield Butte Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC23676  Eschscholzia californica Tim Baroni 1971-7-6 111 Humboldt 1 mi. S of Ferndale on the Mattole Rd. Comment
  HSC12348  Eschscholzia californica Steve Dorei 1970-10-20 111 Humboldt Along Plaza Ave., 200 ft. SW of Laurel Dr. Comment
  HSC59686  Eschscholzia californica George Kirn 1977-8-20 Humboldt Eureka, 6th and Myrtle Ave. Comment
  UC1222990  Eucephalus tomentellus Joseph P. Tracy 1941-8-24 17043 Humboldt near, (openings in fir forest) McKay Camp; South Fork Mountain 1676 Comment
  JEPS20486  Euchiton gymnocephalus Joseph P. Tracy 1936-5-29 14829 Humboldt 2 mi ne Orick (on Bold Hilla Road); Bold Hills Road 152 Comment
  UC562613  Euchiton gymnocephalus Joseph P. Tracy 1936-3-22 14784 Humboldt 4 mi se Korbel (near Angels Ranch); North Coast Ranges 304 Comment
  BLMAR290  Euonymus occidentalis var. occidentalis Jennifer Anthony-Wheeler 2001-5-22 290 Humboldt Headwaters Forest Reserve, growing shaded streambank by ' babbits ridge ' 335 Comment
  HSC69641  Euphorbia peplus R. Kalal 1980-6-8 18 Humboldt Arcata, at intersection of Hill St. and Spring St. in the dry waste area of a yard. 43 Comment
  HSC36589  Euphorbia peplus John Rehling 1975-5-4 55 Humboldt H.S.U. campus Comment
  HSC7994  Euphorbia peplus Richard Steele 1962-4-14 19 Humboldt 1/4 mi. W of H.S.C. campus 15 Comment
  CAS-BOT-BC310681  Euthamia occidentalis Frank W. Peirson 1926-7-13 7062 Humboldt Mad River, vicinity of Blue Lake Comment
  HSC73806  Festuca arundinacea M. A. Baker 1980-6-16 1938 Humboldt Near Monks Camp. 1097 Comment
  UCD65940  Festuca elmeri R. Tofsrud 1947-7-1 204 Humboldt Between Alder Point and Zinea. Comment
  UC187103  Festuca idahoensis Joseph P. Tracy 1911-7-6 3338 Humboldt along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  SEINET175520 Image available Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River near Bridgeville Comment
  UC38531  Festuca occidentalis Harley P. Chandler May 1901 1186 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC278968  Festuca rubra Joseph P. Tracy 1911-7-16 3531 Humboldt At Eureka 60 Comment
  CAS-BOT-BC282522  Festuca subbiflora Harley P. Chandler 1901-5-1 1184 Humboldt Humboldt Bay 30 Comment
  UC1152012  Festuca subuliflora A. H. Murphy 1951-5-15 31 Humboldt 0.5 mi s McCann (on Fruitland Road) Comment
  CAS-BOT-BC453519  Fragaria chiloensis David D. Keck; J. Clausen 1935-6-16 3390 Humboldt Mouth of Little River Comment
  CAS-BOT-BC453524  Fragaria chiloensis Bolemanson 1908-5-15 s.n. Humboldt Samoa Comment
  CHSC27897  Fragaria chiloensis Phil Blumert 1978-3-25 1 Humboldt Along beaches, ca. 100 m w of intersection of 'C' Rd and Ocean View Drive, Patrick's Point 5 km n of Trinidad. Comment
  HSC18616  Fragaria chiloensis A. Sylvester, R. Spellenberg, D. Sutherland 1966-3-26 1355 Humboldt Near Beachcross 5 mi. W of Ferndale on coast Comment
  HSC72700  Fragaria vesca Gail Newton 1980-6-24 570 Humboldt Near Ladder Rock 1570 Comment
  UC1198728  Fragaria vesca Joseph P. Tracy 1917-4-29 4778 Humboldt Lucas Prairie; Northern Coast Region, Eureka 0 Comment
  CAS-BOT-BC53401  Frangula californica subsp. occidentalis Doris K. Kildale 1928-10-7 6748 Humboldt Willow Creek Canyon, 7 mi. west of Trinity Comment
  CAS-BOT-BC59956  Frangula purshiana Henry M. Pollard 1945-9-1 s.n. Humboldt Camp Creek, Klamath River Canyon. Comment
  CAS-BOT-BC59966  Frangula purshiana H. E. McMinn 1922-8-5 347 Humboldt Along Van Duzen River Comment
  CAS-BOT-BC60000  Frangula purshiana C. B. Wolf 1931-8-30 2373 Humboldt E. side of Eureka on P. St., one block n. of Henderson St. 30 Comment
  HSC95924  Frangula purshiana subsp. purshiana Will Ferrand 2001-6-17 18 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  UC1173690  Fraxinus latifolia Joseph P. Tracy 1939-5-6 16279 Humboldt opposite mouth of Willow Creek; Trinity River Valley, Lack Pond 152 Comment
  UC1198635  Fraxinus latifolia Joseph P. Tracy 1942-6-2 17106 Humboldt Valley of South Yager Creek 762 Comment
  UC562744  Fraxinus latifolia Joseph P. Tracy 1928-4-8 8410 Humboldt Carlotta Northern Coast Ranges 60 Comment
  HSC15546  Fritillaria affinis F. B. Plett 1963-5-15 49 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  UC146197  Fritillaria affinis Joseph P. Tracy 1908-6-8 2640 Humboldt Kneeland Prairie, at Ashfield's Butte Kneeland Prairie; Northern Coast Ranges, , Ashfield's Butte 762 Comment
  SEINET200745  Fritillaria lanceolata Joseph P. Tracy 1940-5-17 16549 Humboldt McClellan Mountain. 762 Comment
  HSC16383  Fuchsia magellanica N. D. Dennis 1965-5-5 48 Humboldt 2 mi. N of Trinidad, 1 mi. E of College Cove Comment
  SEINET4208042  Fumaria capreolata Richard R. Halse 2013-3-28 8767 Humboldt Eureka. By a Texaco station near 3543 Broadway St. (U.S. Hwy. 101); 0 6 Comment
  SEINET11117327  Galium anglicum Unknown 1916-1 4730 Humboldt Alder Point, 500 ft. Comment
  BLMAR274  Galium aparine Jennifer Anthony-Wheeler 1999-7-30 274 Humboldt Lacks Creek 1219 Comment
  HSC73541  Galium aparine Gail Newton 1980-7-14 1477 Humboldt Near Last Chance Ridge. 1219 Comment
  UC1196095  Galium aparine Joseph P. Tracy 1935-7-23 14166 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  HSC70395  Galium bolanderi M. A. Baker 1980-6-7 1846 Humboldt Near Ammon Creek 732 Comment
  HSC37909  Galium divaricatum Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  UC175682  Galium porrigens Joseph P. Tracy 1912-7-26 3863 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC416651  Galium triflorum Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  HSC100644  Galium triflorum Carl C. Marshall May 1886 210 Humboldt Woods everywhere. Comment
  SEINET12335256  Galium triflorum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -278 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UC169075  Galium triflorum Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5470 Humboldt near Elk Prairie (Fruitland); North Coast Ranges Comment
  BLMAR268  Gamochaeta ustulata Jennifer Anthony-Wheeler 1999-6-16 268 Humboldt Headwaters Forest Reserve, Disturbed or wasted areas 463 Comment
  HSC40952  Gamochaeta ustulata Linda M. Barker 1976-7-5 1539 Humboldt 3 mi. W of Arcata. Comment
  JEPS20474  Gamochaeta ustulata Joseph P. Tracy 1936-8-23 15163 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC485684  Gamochaeta ustulata Joseph P. Tracy 1912-6-9 3648 Humboldt Alton Northern Coast Region 30 Comment
  UC1199352  Gamochaeta ustulata Joseph P. Tracy 1918-7-6 5043 Humboldt South Fork of, near the Humboldt-Mendocino County line Eel River; Northern Coast Ranges, Eel River 152 Comment
  CAS-BOT-BC188549  Garrya elliptica J. P. Tracy 1901-2-15 992 Humboldt Immediate vicinity of Eureka 152 Comment
  UC1585366  Garrya elliptica R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 19 Humboldt w of Eureka (0.5 km s of Hwy 255, on New Navy Base Rd on North Split of Samoa Peninsula); Samoa Peninsula 10 Comment
  CAS-BOT-BC182146  Garrya fremontii Doris K. Kildale 1929-4-25 7434 Humboldt McDowell Butte - Kneeland Prairie 914 Comment
  HSC82186  Garrya fremontii Thomas W. Nelson 1977-6-15 3444 Humboldt Along old road to ski area 1372 Comment
  UC668298  Garrya fremontii Joseph P. Tracy 1933-3-5 10918 Humboldt Alton North Coast Ranges (along Van Duzen River) 30 Comment
  HSC73068  Gaultheria ovatifolia M. A. Baker 1980-6-16 1953 Humboldt Near Onion Mtn. 1280 Comment
  JEPS66600  Gaultheria ovatifolia Joseph P. Tracy 1926-6-27 7670 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1463 Comment
  UC32666  Gaultheria ovatifolia Chesnut and Drew 1888-8-6 Humboldt Head of Redwood Creek Comment
  HSC89436  Gaultheria shallon P. A. Daly 1984-5-13 25 Humboldt Along trail/Rd. at Trinidad Head. 61 Comment
  JEPS66606  Gaultheria shallon W. L. Jepson 1932-8-1 16470 Humboldt at Giant Tree, Bull Creek Bull Creek; Giant Tree, Bull Creek 182 Comment
  RSA467225  Gaultheria shallon Maude Minthorn s.n. Humboldt Ferndale. Comment
  SBBG5537  Gaultheria shallon H. and M. Dearing 1939-5-21 3449 Humboldt near Trinidad 91 Comment
  HSC39619  Gayophytum diffusum subsp. parviflorum Thomas W. Nelson, Jane P. Nelson 1976-6-15 2722 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC54887  Gayophytum diffusum subsp. parviflorum G. L. Clifton, Griswold 1979-7-25 10897 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC55175  Gayophytum diffusum subsp. parviflorum Gilbert Muth 1979-8-1 12176 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1780 Comment
  HSC97985  Gayophytum diffusum subsp. parviflorum Cara Witte 2007-7-11 502 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC505126  Gayophytum humile Joseph P. Tracy Jul 16 1930-Jul 19 1930 8940 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UCR80278  Gentiana sceptrum R. S. Woglum 1938-8-29 2038 Humboldt North Coast, grounds of Trinidad State Park, south of Trinidad 38 Comment
  UC502970  Geranium carolinianum Joseph P. Tracy 1927-5-8 7959 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Region Comment
  UC165812  Geranium dissectum Joseph P. Tracy 1909-7-4 3006 Humboldt Eureka Northern Coast Region 0 Comment
  UC1198955  Geranium molle Joseph P. Tracy 1933-5-19 12198 Humboldt Alton to Fortuna (along the Eel River); Eel River 15 Comment
  JEPS61438  Geranium oreganum Milo S. Baker 1923-7-20 30 Humboldt Head of Yager Creek 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
  HSC89508  Geranium retrorsum M. Roantree 1985-6-11 93 Humboldt E side of Trinidad Head Comment
  RSA46733  Gilia capitata subsp. pacifica Doris K. Kildale 1927-7-1 s.n. Humboldt Alton Hill Comment
  RSA469341  Gilia capitata subsp. pacifica J. P. Smith 1973-5-26 6816 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  CAS-BOT-BC225472  Gilia millefoliata Harley P. Chandler 1901-5-1 1135 Humboldt Humboldt Bay 3 Comment
  UC146177  Gilia millefoliata Joseph P. Tracy 1905-6-11 2190 Humboldt sandy soil at Bucksport Northern Coast Region, region about Humboldt Bay (region about Humboldt Bay) 0 Comment
  HSC100594  Gilia squarrosa Carl C. Marshall Sep 1886 245 Humboldt Fields near Arcata. Comment
  UC1197913  Gilia tricolor subsp. diffusa Joseph P. Tracy 1914-5-14 4465 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 Comment
  HSC73141  Githopsis specularioides M. A. Baker 1980-5-18 1333 Humboldt Near Black Mtn. 792 Comment
  POM208979  Githopsis specularioides Lincoln Constance 1934-6-15 819 Humboldt Grasshopper Pk.; Bull Creek watershed, Humboldt Redwood Park. 976 Comment
  RSA246693  Glaux maritima Robert F. Thorne, Percy C. Everett 1965-8-7 3520 Humboldt Samoa Peninsula. 0 Comment
  HSC14201  Glechoma hederacea D. W. Snell 1964-4-25 55 Humboldt Mad River bottom, 3 mi. N of Blue Lake Comment
  CAS-BOT-BC218426  Glehnia littoralis subsp. leiocarpa J. Clausen 1935-6-16 3386 Humboldt Mouth of Little River Comment
  UC1197364  Glehnia littoralis subsp. leiocarpa Joseph P. Tracy 1938-7-15 16077 Humboldt mouth of Eel River 6 Comment
  UC642340  Glehnia littoralis subsp. leiocarpa Joseph P. Tracy 1927-6-26 8207 Humboldt Stone Lagoon 6 Comment
  CDA2166  Glyceria declinata E. C. Whitney 1968-7-16 Humboldt Arcata Bottom area. 0 Comment
  UCD66788  Glyceria declinata J. Lenz 1950-6-1 Humboldt Cranell Comment
  UC184937  Glyceria elata Joseph P. Tracy 1909-7-31 3049 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  SEINET267680 Image available Glyceria occidentalis Gordon Leppig 1995-4-6 243 Humboldt Arcata; Alder Grove Pond. 12 Comment
  SEINET11849413  Gnaphalium microcephalum var. thermale J. P. Tracy 1942-1 17303 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC302619  Gnaphalium palustre Joseph P. Tracy 1933-8-30 13043 Humboldt North Coast Ranges. Grouse Mountain 1524 Comment
  HSC31359  Gnaphalium palustre R. F. Thorne, P. Everett 1965-8-7 35227 Humboldt Samoa Peninsula 3 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
  UCR122355  Gnaphalium stramineum George K. Helmkamp, E. A. Helmkamp 2001-7-8 7010 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  CAS-BOT-BC304740  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  CAS-BOT-BC304745  Grindelia hirsutula H. E. Parks 1941-8-1 24190 Humboldt Big Lagoon Comment
  CAS-BOT-BC304747  Grindelia hirsutula Henry M. Pollard 1948-8-7 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC304762  Grindelia hirsutula Carl B. Wolf 1937-9-9 9305 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 Comment
  HSC25397  Grindelia hirsutula S. Dowty 1972-10-29 325 Humboldt Near county dump at edge of Humboldt Bay Comment
  HSC39104  Grindelia hirsutula J. D. Ackerman 1975-8-31 654 Humboldt Lanphere Rd., near Mad River Slough, Arcata Bottoms Comment
  HSC95525  Grindelia hirsutula Andrea Pickart 2002-7-19 184 Humboldt Arcata Marsh at Jolly Giant Creek mile .1 10 Comment
  JEPS41875  Grindelia hirsutula W. L. Jepson 1902-8-4 2145 Humboldt seashore Capetown to Petrolia 3 Comment
  OBI37801  Grindelia stricta var. platyphylla David J. Keil 1983-7-1 17281 Humboldt Ca. 7 mi W of Honeydew along Mattole rd Comment
  CHSC31291  Grindelia stricta var. stricta Mark Stopher 1980-7-11 113 Humboldt Elk River mitigation site, in lower portions of site and in marsh. 1 Comment
  POM187851  Grindelia stricta var. stricta Marcus E. Jones 1931-7-16 29143 Humboldt Arcata. Comment
  UC449871  Hackelia bella P. E. Goddard 1906-6 677 Humboldt Sasseck Peak Comment
  UC1239635  Hackelia californica Joseph P. Tracy 1936-8-8 15126 Humboldt on Ridge 2 mi e of Groves Prairie; Trinity Summit 1524 Comment
  HSC74473  Hackelia micrantha Gail Newton 1980-7-23 1744 Humboldt Near Packsaddle Ridge 1463 Comment
  UC34534  Helenium bigelovii Chestnut and Drew 1888-8-7 Humboldt Lake Prairie Comment
  RSA246777  Helenium bolanderi R. F. Thorne, Percy C. Everett 1965-8-9 35286 Humboldt Big Lagoon. 3 Comment
  JEPS35552  Helenium puberulum Lincoln Constance 1934-6-18 904 Humboldt swamp border of N. Dyerville Flat (near South Fork R.R. Sta. and P.O.); South Fork Eel River, Bull Creek Region Comment
  UC166088  Helenium puberulum Joseph P. Tracy 1911-8-27 3534 Humboldt Ryan's Slough Northern Coast Region, Region about Humboldt Bay 0 Comment
  HSC38786  Hemizonella minima J. P. Smith 1976-5-30 8821 Humboldt Near Black Rock on the road to Clear Lake 1524 Comment
  CAS-BOT-BC306114  Hemizonia congesta subsp. clevelandii L. R. Abrams 1916-7-11 5975 Humboldt Dobbin [Dobbyn] Creek Comment
  UC495626  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1930-9-1 9174 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River 121 Comment
  CAS-BOT-BC309988  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1932-8-21 10364 Humboldt Northern Coast Ranges. Three Cabins; on lower western foothills of Chaparral Mountain 457 Comment
  HSC38910  Heracleum maximum J. P. Smith 1970-6-7 3801 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  HSC39822  Hesperevax sparsiflora var. brevifolia R. Becking 1976-5-2 Humboldt Along Samoa peninsula at the Samoa airstrip at Fairhaven Comment
  UC1222321  Heteromeles arbutifolia Joseph P. Tracy 1950-9-22 19380 Humboldt about 3 mi sw Orleans (above Bluff Creek) Comment
  CAS-BOT-BC311028  Heterotheca oregona var. compacta Carl B. Wolf 1927-8-30 1228 Humboldt 2 mi. s. of Petrolia on Matole River near point where road crosses river Comment
  BLMAR317  Heuchera micrantha Jennifer Anthony-Wheeler 2002-8-9 317 Humboldt Headwaters Forest Reserve, growing in a pond with large floating logs 426 Comment
  UC673200  Heuchera micrantha var. diversifolia Lincoln Constance, Reed C. Rollins 1942-5-12 2883 Humboldt 6 mi ne Weitchpec (mouth of Bluff Creek); Klamath-Siskiyou Region 152 Comment
  CAS-BOT-BC420721  Heuchera micrantha var. diversifolia L. R. Abrams 1916-7-10 5960 Humboldt Between Harris and Alder Pt., southern Humboldt County Comment
  CHSC1635  Heuchera micrantha var. pacifica M. Underhill 1952-7-12 Humboldt Coastal cliffs. 3 Comment
  CAS-BOT-BC312391  Hieracium albiflorum Doris K. Kildale 1928-6-24 7078 Humboldt Redwood Creek at Berry's 289 Comment
  HSC58215  Hieracium albiflorum Walter Overton 1979-8-1 12352 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 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
  CAS-BOT-BC312396  Hieracium albiflorum Henry M. Pollard 1947-9-1 s.n. Humboldt Naer summit of Somes Mountain, Orleans region 1219 Comment
  HSC5829  Hieracium albiflorum H. E. Parks, J. P. Tracy 1930-9-14 768 Humboldt Bald Hills, near Kneeland Comment
  JEPS36565  Hieracium bolanderi Joseph P. Tracy 1926-6-20 7638 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  UC1199462  Hieracium nudicaule Joseph P. Tracy 1911-7-6 3363 Humboldt along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  CDA28238  Hierochloe occidentalis Wilma Mae Lowary & Norah van Kleeck 1974-8-8 Humboldt Lady Bird Johnson Grove, Redwood National Park, northeast of Orick. 0 Comment
  HSC61726  Hirschfeldia incana Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  CAS-BOT-BC280738  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CHSC31289  Holcus lanatus Mark Stopher 1980-7-11 116 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  HSC81934  Holcus lanatus Thomas W. Nelson, Jane P. Nelson 1979-7-3 4959 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  SEINET181175 Image available Holcus lanatus Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15060 Humboldt Coolidge, Redwood Park. Comment
  UCD84884  Holcus mollis R. N. Raynor 1935-6-7 s.n. Humboldt Fort Seward. Comment
  HSC70991  Holodiscus discolor Gail Newton 1980-7-15 1576 Humboldt Near Sims Mtn. 1311 Comment
  HSC74749  Holodiscus discolor Gail Newton 1981-7-22 2261 Humboldt Near Bug Creek 1375 Comment
  RSA183590  Holodiscus discolor D. E. Anderson 1963-9-1 2806 Humboldt Near Kneeland. 732 Comment
  UC154503  Holodiscus discolor Harley P. Chandler 1901-6-1 1314 Humboldt North Coast Ranges, Hupa Indian Reserve Hupa Indian Reserve; North Coast Ranges, Hupa Indian Reserve 152 Comment
  HSC38426  Hordeum brachyantherum D. E. Anderson, J. P. Smith 1971-6-14 - 1046 Humboldt Along railroad tracks at P.G.&E. power plant S of Eureka. Comment
  HSC89903  Hordeum brachyantherum Leonel Arguello 1989-6-11 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  CAS-BOT-BC281265  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1933-6-6 12508 Humboldt Trinidad 9 Comment
  UC1103487  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1942-9-20 17326 Humboldt 2 mi S of (town) Field's Landing 6 Comment
  UC1132099  Hordeum brachyantherum subsp. brachyantherum H. S. Yates 1936-2-16 5680 Humboldt 1 mi ne Samoa; Eureka Quad. Comment
  HSC79356  Hordeum murinum subsp. glaucum Kenneth Clark 1980-5-10 644 Humboldt Shelter Cove, coastal bluffs of Point Delgada 3 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
  HSC97584  Horkelia tridentata subsp. flavescens C. Witte 2007-5-18 43 Humboldt Near Bottleneck Spring. 1575 Comment
  CAS-BOT-BC537895  Horkelia tridentata var. flavescens Lincoln Constance; Alan A. Beetle; Joseph P. Tracy 1940-5-17 2613 Humboldt Larabee Valley, near Eureka 762 Comment
  CAS-BOT-BC537897  Horkelia tridentata var. flavescens Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC41272  Hosackia oblongifolia Brad Klipfel 1974-6-25 418 Humboldt Horse Mtn., along the creek just above Horse Mtn. mine. Comment
  UC1586870  Hydrophyllum fendleri var. albifrons Juha Pykala and D. H. Norris 1987-6-11 1587 Humboldt w of Crogan Hole (n of Trinity Mountain Wilderness, s of North Trinity Mountain) 1554 Comment
  HSC98762  Hydrophyllum occidentale Cara Witte 2008-7-2 823 Humboldt Board Camp Mountain. Forest Service Rd. 4N38. Approximately 1 mile south of 4N38 and National Forest 1 intersection. 1416 Comment
  POM258591  Hydrophyllum occidentale Lincoln Constance, A. A. Beetle, Joseph P. Tracy 1940-5-17 2618 Humboldt NW slope, Lower slopes of Buck Mtn, near Eureka. 793 Comment
  UC1762197  Hydrophyllum tenuipes H. E. Parks and Joseph P. Tracy 1949-6-25 11674 Humboldt Trinity Summit, meadow at Box Camp 1463 Comment
  POM229372  Hydrophyllum tenuipes Lincoln Constance, A. A. Beetle 1940-5-16 2611 Humboldt Valley of Van Duzen River, 5 miles east of Carlotta. 30 Comment
  JEPS66783  Hypericum anagalloides Lincoln Constance 1934-6-25 922 Humboldt 4 mi. n. Dyverville (and of n. boundary of Humboldt Redwood Park, on Redwood Hwy, Englewood); S. Fork Eel R., Bull Creek Region, Englewood Comment
  SD51268  Hypericum perforatum Darley F. Howe 1961-8-2 3118 Humboldt 7.7 miles east of Orick on Bald Mountain road. 609 Comment
  UC179926  Hypericum perforatum Joseph P. Tracy 1914-9-7 4618 Humboldt On Bald Mt. near Bald Mt. House; Northern Coast Ranges, Bald Mt. 914 Comment
  UC668259  Hypericum perforatum Joseph P. Tracy 1937-4-3 15244 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  UCSB23845  Hypericum perforatum Keefe, Joseph 1967-7-8 Humboldt bank of Eel River; Miranda Turnoff; 12.4 miles north of Garberville on U.S. Highway 101 170 Comment
  HSC22968  Hypericum perforatum S. V. Thompson 1967-7-23 10 Humboldt Along Boulder Creek Comment
  HSC67967  Hypericum perforatum J. P. Smith 1973-5-26 6830 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  POM311762  Hypericum perforatum Karen Hosterman 1957-8-29 1109 Humboldt 7 miles from Orleans, within 1 mile of junction of Klamath Road and Red Cap Creek. 114 Comment
  UCD110387  Hypericum perforatum subsp. perforatum J. I. Mallory 1955-9-17 123 Humboldt Three-eights mile north-northwest of headquarters, Cottrell Ranch. 746 Comment
  HSC5864  Hypochaeris glabra Lincoln Constance 1934-5-24 639 Humboldt S Fork Eel River 122 Comment
  HSC60062  Hypochaeris glabra M. A. Baker 1978-5-6 491 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  HSC79460  Hypochaeris radicata Kenneth Clark 1980-6-14 676 Humboldt On western slope above Dead Man's Gulch (near parking access) 145 Comment
  SEINET11860415  Hypochaeris radicata Unknown 1933-8-6 s.n. Humboldt Eureka Comment
  UCSB6709  Hypochaeris radicata Keator, Glenn 1958-6-18 Humboldt In the vicinity of Smith River (the town) Comment
  UC1173717 Image available Iliamna latibracteata Joseph P. Tracy 1939-7-23 16350 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
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Feb 27 2012
  NY177411  Iliamna rivularis var. rivularis H. N. Mozingo 1976-6-28 76100 Humboldt Outside of Humboldt National Forest, at roadside near Solid Silver Creek 1691.6 Comment
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Feb 27 2012
  HSC55330  Ipomopsis aggregata Griswold, Butler 1979-7-12 7170 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC150134  Ipomopsis aggregata P. E. Goddard 1906-6 683 Humboldt Sassick Park Comment
  CHSC2200  Iris douglasiana E. Crouch 1929-5-8 Humboldt Comment
  UC14932  Iris douglasiana J. P. Tracy 1901-6-30 1190 Humboldt immediate vicinity Eureka 0 Comment
  UC162596  Iris douglasiana Joseph P. Tracy 1911-6-4 3215 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  HSC13863  Iris douglasiana W. R. Brigham 1962-5-20 19 Humboldt End of old Hwy. 101, N of Big Lagoon Rd. Comment
  RSA135866  Iris douglasiana Lee W. Lenz, E. K. Balls 1951-5-4 16422 Humboldt Between Ben Johnson and Russ Grove, just south of Del Norte County line, Highway 101 Comment
  RSA24306  Iris douglasiana Carl B. Wolf 1941-2-25 9960 Humboldt 9 mi. e. of Orick on rd. to Weitchpec. 610 Comment
  SEINET12058930  Iris douglasiana E. A. York 1990-1-10 2662 Humboldt USGS Redwood Field Station, Arcata Comment
  UC1134714  Iris macrosiphon R. Stahelin 1933-6-24 Humboldt Casper Eureka Quad. (e of Camp 19) 91 Comment
  RSA135820  Iris purdyi E. K. Balls 1957-5-25 22605 Humboldt 12.1 miles southwest from Dinsmores, State Highway 36 335 Comment
  RSA30641  Iris tenax subsp. klamathensis Lincoln Constance, Reed C. Rollins 1942-5-12 s.n. Humboldt Klamath River 2 miles north of Orleans. 122 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
  UC667943  Isoetes nuttallii Joseph P. Tracy 1938-7-7 16034 Humboldt at Cold springs Grouse Mt. 1432 Comment
  RSA246917  Isolepis cernua Robert F. Thorne, Percy C. Everett 1965-8-7 35215 Humboldt Samoa Peninsula: near sea level Comment
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Sep 12 2018
  UC479412  Jaumea carnosa Marcus E. Jones, A. M. 1931-7-16 29118 Humboldt Arcata Comment
  HSC102931  Juncus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 934 Humboldt Patterson Meadows 1555 Comment
  UC303152  Juncus balticus subsp. ater Joseph P. Tracy 1925-8-2 7221 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC249817  Juncus bolanderi Joseph P. Tracy 1924-7-13 6730 Humboldt Big Lagoon 6 Comment
  HSC95378  Juncus bolanderi Andrea Pickart 2002-8-7 199 Humboldt Arcata bottoms along Lanphere Rd. near end 20 Comment
  RSA89765  Juncus breweri Phillip A. Munz 1954-7-25 19877 Humboldt Near dunes at Humboldt Lighthouse south of Samoa. Comment
  UC14896  Juncus bufonius J. P. Tracy 1900-8-5 913 Humboldt immediate vicinity Eureka 0 Comment
  UC594245  Juncus bufonius S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3434 Humboldt nw slopes Buck Mountain 822 Comment
  HSC14098  Juncus bufonius var. occidentalis H. E. Parks, J. P. Tracy 1935-6-16 11273 Humboldt Buck Mt., lower NW slopes 793 Comment
  CHSC105147  Juncus covillei Peter F. Zika 2008-10-19 24231 Humboldt Uncommon in damp ditches, full sun, E side of Route 101, near Exit 728 for Trinidad Beach 110 Comment
  HSC14019  Juncus ensifolius H. E. Parks, J. P. Tracy 1924-8-3 2400 Humboldt Big Lagoon Comment
  HSC69862  Juncus ensifolius Thomas W. Nelson, Ken Hindley 1978-5-28 4085 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  JEPS66986  Juncus ensifolius Joseph P. Tracy 1918-7-5 5027 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  UC1152097  Juncus ensifolius Joseph P. Tracy 1938-7-12 16053 Humboldt w end Table Bluff Comment
  UC184194  Juncus hemiendytus var. hemiendytus Joseph P. Tracy 1913-6-17 4168 Humboldt near Buck Mountain summit; Northern Coast Ranges 1524 Comment
  JEPS63846  Juncus hesperius W. L. Jepson 1936-8-17 19709 Humboldt 2 mi s Field's Landing (near Still's ranch) Comment
  UC205904  Juncus hesperius Hy Melde 1902-6-23 Humboldt Eureka Comment
  HSC63849  Juncus laccatus M. A. Baker 1979-6-27 918 Humboldt Comment
  CHSC105160  Juncus lescurii Peter F. Zika 2008-11-3 24275 Humboldt Sunny meadow just above salt marsh, with Juncus breweri, Festuca arundinacea, Baccharis, Ammophila, mouth of Elk River NW of Route 101 bridge, 2 air km S of Eureka; North Coast (NCo) 2 Comment
  HSC39758  Juncus lescurii Peter Sorensen 1976-8-8 Humboldt Woodley Island Comment
  UC183957  Juncus occidentalis Joseph P. Tracy 1909-7-31 3052 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  RSA298328  Juncus patens J. P. Smith, Advanced Plant Taxonomy Class 1971-10-9 5034 Humboldt Mad River above the Fish Hatchery. Comment
  CAS-BOT-BC235878  Keckiella corymbosa P. A. Munz 1936-8-9 14328 Humboldt Cliff, south fork of Eel River, 5 mi. north of Humboldt-Mendocino County-line Comment
  CAS-BOT-BC235883  Keckiella corymbosa Joseph P. Tracy 1937-7-11 15422 Humboldt Vicinity of Garberville 121 Comment
  RSA79855  Keckiella corymbosa F. W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec. Comment
  SD87718  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  UC585629  Keckiella corymbosa Joseph P. Tracy 1937-7-11 15422 Humboldt vicinity Garberville 121 Comment
  HSC56112  Kelloggia galioides G. L. Clifton 1979-7-31 11876 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC302178  Lactuca biennis Joseph P. Tracy 1926-7-18 7746 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley, Kirkham Creek 182 Comment
  UC552315  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  JEPS36746  Lactuca serriola Joseph P. Tracy 1926-9-6 7794 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  SEINET11811175  Lactuca serriola J. P. Tracy 1949-1 18403 Humboldt Trinity River valley, at Willow Creek 152 Comment
  UC1199155  Lagophylla ramosissima Joseph P. Tracy 1924-8-10 6808 Humboldt Blue Slide on Van Duzen; Northern Coast Ranges 91 Comment
  HSC95607  Lamiastrum galeobdolon Gordon Leppig, Kai Neander 2000-4-13 1292 Humboldt Arcata Community Forest, 100 m S of trail 5 & 10 intersection 91 Comment
  UC1225837  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka Comment
  UCD125067  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka. 45 Comment
  CAS-BOT-BC337869  Lapsana communis Carl B. Wolf 1927-8-22 801 Humboldt Big Lagoon Comment
  UC1223224  Lapsana communis Joseph P. Tracy 1944-7-3 17482 Humboldt Graham's Peach Orchard, along road near old house, at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  CDA18209  Lasthenia californica G. D. Barbe, T. C. Fuller 1974-6-17 1836 Humboldt North Coast Ranges; Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  UC30471  Lasthenia californica subsp. macrantha Bolander Humboldt Comment
  UC162576  Lathyrus jepsonii var. californicus Harley P. Chandler Jun 1910 1507 Humboldt Klamath River North Coast Ranges 426 Comment
  JEPS64857  Lathyrus lanszwertii var. lanszwertii Mrs. M. H. Manning Apr 1902 Humboldt near Hupa Comment
  UC495705  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1927-4-10 7893 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  POM214877  Lathyrus littoralis Joseph P. Tracy 1929-7-4 8641 Humboldt Sand dunes near Samoa, on Humboldt Bay. Comment
  RSA246792  Lathyrus littoralis Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-7 35221 Humboldt Samoa Peninsula. 3 Comment
  HSC48740  Lathyrus nevadensis var. nevadensis Brad Klipfel 1973-6-10 65 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC15342  Lathyrus nevadensis var. nevadensis State Survey 1800-1 Humboldt Comment
  RSA60500  Lathyrus odoratus John H. Thomas 1949-6-14 909 Humboldt betw Le Perron Flat and whiteys Peak along the trail. E of town of Orleans Comment
  UC709436  Lathyrus polyphyllus Joseph P. Tracy 1936-8-8 15128 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UC1222408  Lathyrus polyphyllus Joseph P. Tracy 1949-8-11 18474 Humboldt 2-6 mi s Grouse Mt. (ridge e of headwaters of Redwood Creek, where power line crosses); Kinsey Ridge 1280 Comment
  BLMAR644  Lathyrus torreyi Jennifer Wheeler 2011-7-7 644 Humboldt Lacks Creek, Pine Ridge Road, spur at Stormy Saddle 1097 Comment
  UC931756  Lathyrus vestitus C. L. Hitchcock 1949-6-8 19096 Humboldt 2 mi w Blue Lake (along Highway 299) Comment
  UC162589  Lathyrus vestitus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5358 Humboldt Bell Springs to Harris; North Coast Ranges Comment
  HSC81966  Lathyrus vestitus subsp. bolanderi Thomas W. Nelson, Jane P. Nelson 1979-7-3 4942 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  SEINET12158645  Lathyrus vestitus subsp. bolanderi J. P. Tracy 1949-1 18327 Humboldt on the Butter Valley Rd, 2miE of Kneeland 610 Comment
  HSC64184  Lathyrus vestitus var. ochropetalus J. O. Sawyer, M. A. Ericksen 1979-6-23 3391 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UC495710  Lathyrus vestitus var. ochropetalus Joseph P. Tracy 1929-5-5 8579 Humboldt Phillipsville, facing South Fork of Eel River South Fork of Eel River; Northern Coast Ranges 121 Comment
  HSC39786  Layia carnosa Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  UC89177  Layia carnosa Harley P. Chandler May 1901 1150 Humboldt Humboldt Bay 3 Comment
  UC672866  Lemna turionifera Joseph P. Tracy 1935-7-17 14109 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  RSA246941  Leontodon leysseri R. F. Thorne, P. C. Everett 1965-8-8 35234 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  UC14403  Lepidium densiflorum Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  CHSC31922  Lepidium didymum M. S. Taylor 1980-10-9 3365 Humboldt Bed of Jacoby Creek, ca. 1/4 mi w of its jct with Arcata Rd, ca. 5 mi s of Arcata in Bayside. 15 Comment
  CHSC33025  Lepidium didymum James P. Smith 1973-5-26 6876 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Railroad right-of-way. Comment
  UCD115824  Lepidium nitidum Joseph P. Tracy 1948-5-31 17990 Humboldt Harris. 762 Comment
  CAS-BOT-BC12876  Lepidium strictum Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta. Comment
  UC1116219  Lepidium strictum Joseph P. Tracy 1948-5-31 17992 Humboldt Harris 762 Comment
  UC709460  Lepidium strictum Joseph P. Tracy 1941-5-4 16866 Humboldt Scotia 30 Comment
  HSC45590  Leptosiphon androsaceus Diane L. Reed 1978-5-27 126 Humboldt Horse Mtn., on Titlow Hill Rd. 1.5 mi. from junction with Hwy. 299 Comment
  HSC96226  Leptosiphon bolanderi J. McIntire, S. Lyon 2005-6-24 16 Humboldt FS NF1 1375 Comment
  UC249851  Lessingia nemaclada Joseph P. Tracy 1923-9-10 6546 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC581779  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  HSC32510  Lessingia nemaclada Thomas W. Nelson 1973-9-3 1137 Humboldt E of Dinsmore beside Hwy. 36 Comment
  UC1115822  Lessingia nemaclada Joseph P. Tracy 1939-9-4 16476 Humboldt opposite Buck Mountain (Dinsmores); Valley of Van Duzen River 762 Comment
  UC1199333  Lessingia nemaclada Joseph P. Tracy 1939-8-5 16374 Humboldt gravel bar of river opposite Buck Mt.; Van Duzen River, Dinsmore's 737 Comment
  UCSB15427  Leucanthemum vulgare 1961-7-3 Humboldt Along State Highway 299, 18.5 miles east of U.S. Highway 101 670 Comment
  HSC3105  Leucojum aestivum J. C. Reppas 1963-2-22 20 Humboldt 820 Fickle Hill Rd. Comment
  HSC48404  Lewisia leeana Brad Klipfel 1973-6-10 94 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC183667  Lewisia nevadensis Joseph P. Tracy 1913-6-17 4167 Humboldt near summit of Buck Mountain Northern Coast Ranges, Buck Mountain 1524 Comment
  HSC32150  Lewisia triphylla D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5597 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  CAS-BOT-BC283511  Leymus X vancouverensis Joseph P. Tracy 1927-6-26 8214 Humboldt Stone Lagoon 6 Comment
  CAS-BOT-BC283516  Leymus X vancouverensis W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  UC181261  Leymus X vancouverensis Joseph P. Tracy 1914-7-16 4586 Humboldt Humboldt Bay Northern Coast Region, Eureka (same spot as my #3744) 0 Comment
  UCD87707  Leymus triticoides A. H. Murphy 1951-6-13 63 Humboldt Eel River at Fort Seward. Comment
  UC1197171  Ligusticum apiifolium Joseph P. Tracy 1918-9-8 5100 Humboldt at Eureka Northern Coast Ranges, Eureka 0 Comment
  UC642252  Ligusticum apiifolium Joseph P. Tracy 1934-7-22 13485 Humboldt at crossing of Kneeland to Bridgeville rd. North Yager Creek 396 Comment
  SEINET10779391  Ligusticum californicum Joseph P. Tracy 1937-8-12 Tracy 15633 Humboldt Snow Camp 1402 Comment
  UC906664  Ligusticum californicum Joseph P. Tracy 1949-8-11 18482 Humboldt 2 - 6 mi. s.. from Grouse Mt. (Kinsey Ridge); Kinsey Ridge 1341 Comment
  UC176188  Lilium columbianum Joseph P. Tracy 1913-7-13 4356 Humboldt Patrick's Point; Northern Coast Ranges 30 Comment
  HSC26820  Lilium columbianum Clifton Raymond Chesbrough 1973-6-19 98 Humboldt 0.5 mi. N of College Cove along coast Comment
  CAS-BOT-BC130636  Lilium kelloggii A. M. Vollmer; L. Beane 1951-6-1 148 Humboldt On road to Bald Mountain, east of Korbel Comment
  RSA74745  Lilium kelloggii Albert M. Vollmer, L. Beane 1951-06 s.n. Humboldt On trail to Blohns cabin, Bald Mountain, east of Korbel Comment
  CAS-BOT-BC130689  Lilium occidentale Doris K. Kildale 1925-6-30 1384 Humboldt On road to Humboldt Country Club 7 miles south of Eureka Comment
  UC201617  Lilium pardalinum Joseph P. Tracy 1918-7-5 5003 Humboldt White Thorne Valley Northern Coast Ranges, Mattole River (banks of Mattole River) 304 Comment
  HSC63174  Lilium rubescens M. A. Baker 1979-7-10 1020 Humboldt S of Dragsaw Spring along USFS Rd. 13N01 Comment
  UC13797  Lilium washingtonianum subsp. purpurascens Chesnut and Drew 1888-7-21 Humboldt South Fork Mt. Comment
  JEPS19627  Limnanthes douglasii W. L. Jepson 1934-5-7 16699 Humboldt Buckeye Prairie Bull Creek Comment
  HSC15789  Limnanthes douglasii Francis Winter 1960-5-7 Humboldt 3 mi. NE of Redwood Creek Ranch. 610 Comment
  UC668278  Limnanthes douglasii subsp. douglasii Joseph P. Tracy 1993-5-20 12246 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
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Jun 28 2015
  POM254102  Limonium californicum C. C. Harris, S. K. Harris 1939-9-8 973 Humboldt South shore of Humboldt Bay. Comment
  UC1198572  Linanthus bicolor Joseph P. Tracy 1906-5-6 2437 Humboldt near Hydesville; Wolverton Gulch 60 Comment
  UC582685  Linanthus bicolor Joseph P. Tracy 1937-5-17 15287 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC582589  Lindernia dubia var. dubia Joseph P. Tracy 1931-9-7 9649 Humboldt Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC416392  Linnaea borealis subsp. longiflora H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  HSC57865  Linnaea borealis subsp. longiflora G. L. Clifton 1979-7-31 11390 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  JEPS12691  Linnaea borealis var. longiflora W. L. Jepson Jul 16 1902-Jul 23 1902 Humboldt Hupa Trail Trinity Summit; , Hupa Trail 2133 Comment
  HSC15801  Linum bienne Francis Winter 1960-4-24 Humboldt 1 mi. N of Redwood Creek Ranch 396 Comment
  HSC37160  Listera cordata var. nephrophylla J. D. Ackerman 1976-2-29 750 Humboldt 1 mi. E of old Hwy. 299 junction with Korbel, Simpson Demonstration Forest Comment
  JEPS37741  Lithocarpus densiflorus W. L. Jepson 1902-6 2138 Humboldt Bear River Range Comment
  SACT002876  Lithocarpus densiflorus C. White 1962-5-13 Humboldt Redwood forest along HIghway 299, 16 miles east of Arcata, ca. Comment
  SEINET8981428  Lithocarpus densiflorus W. D. Billings 1940-6-25 s.n. Humboldt Cedar Creek, 35 miles east of Arcata Comment
  CAS-BOT-BC36106  Lithocarpus densiflorus var. densiflorus Joseph P. Tracy 1927-8-28 8361 Humboldt Near Boynton Prairie Comment
  CAS-BOT-BC36584  Lithocarpus densiflorus var. echinoides Russell W. Beeson June 1 - July 1 [no year] B- 26 Humboldt Pilot Ridge, Forest Stanislaus 1584 Comment
  UC902095  Lithophragma Joseph P. Tracy 1946-6-23 17591 Humboldt Kneeland Prairie 762 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
  HSC97180  Lithophragma campanulatum Benjamin Hart, Erin Lonergan 2007-6-13 10 Humboldt 1 mi. E of USFS Rd. NF1 on 5N04 1524 Comment
  HSC73961  Lithophragma heterophyllum Gail Newton 1980-6-7 130 Humboldt Near Brush Mtn. 1128 Comment
  HSC75460  Lithophragma heterophyllum J. O. Sawyer 1980-7-18 3581 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC1199422  Logfia filaginoides Joseph P. Tracy 1921-5-30 5489 Humboldt Kneeland Prairie 762 Comment
  UC167234  Lolium multiflorum Jos. Burtt Davy and W. C. Blasdale 1899-7-30 6201 Humboldt Russ Ranch Comment
  HSC10302  Lolium perenne John Warner Hosking 1968-6-7 Humboldt HSC Campus, Arcata. Comment
  JEPS16099  Lomatium californicum W. L. Jepson 1902-6-20 1892 a Humboldt Fort Seward Ranch Ridge (= Mail Ridge) 1219 Comment
  HSC71591  Lomatium dasycarpum subsp. dasycarpum M. A. Baker 1980-6-26 2398 Humboldt Near Sims Creek 610 Comment
  HSC21516  Lomatium dissectum var. dissectum H. E. Parks, J. P. Tracy 1935-6-16 11278 Humboldt Buck Mtn. 915 Comment
  HSC74029  Lomatium macrocarpum Gail Newton 1980-7-22 1681 Humboldt Near Devils Backbone 1554 Comment
  UC249606  Lomatium nudicaule Joseph P. Tracy 1922-4-30 6023 Humboldt mouth of S. Fork Trinity R.; Northern Coast Ranges, S. Fork Trinity R. 152 Comment
  JEPS15822  Lomatium tracyi Joseph P. Tracy 1926-6-20 7610 Humboldt Northern Coast Ranges, Horse Mt. 1524 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
  UC441279  Lonicera conjugialis Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5861 Humboldt Trinity Summit Comment
  CAS-BOT-BC241484  Lonicera involucrata var. ledebourii Doris K. Kildale 1925-9-26 1363 Humboldt Mouth of Mad River - coast Comment
  CAS-BOT-BC241492  Lonicera involucrata var. ledebourii L. R. Abrams 1922-6-25 8246 Humboldt Near South Bay Comment
  CAS-BOT-BC241494  Lonicera involucrata var. ledebourii Carl B. Wolf 1927-8-22 770 Humboldt Big Lagoon Comment
  CHSC19479  Lonicera involucrata var. ledebourii Gary J. Stebbins 1970-4-18 66 Humboldt Along road to Samoa 1.0 mile west of Mad River Slough bridge. 6 Comment
  RSA455682  Lonicera involucrata var. ledebourii E. A. Purer 1932-7-27 15978 Humboldt Near Samoa. Comment
  UC726016  Lotus aboriginus A. A. Heller 1937-6-8 15897 Humboldt 3 mi n Trinidad (at Bishop Pine Lodge) Comment
  UC201735  Lotus aboriginus Volney Rattan Jun 1883 Humboldt near Kneeland Prairie (e of Eureka, in R.N. forest) Comment
  HSC26447  Lotus corniculatus Brad Klipfel 1973-4-28 16 Humboldt Along Canyon Creek, SW of Korbel Comment
  UC1223434  Lotus crassifolius var. crassifolius Joseph P. Tracy 1935-7-29 14341 Humboldt ne of Ranger Station (at beginning of Salmon Summit Trail, Humboldt County side); Trinity Summit, Salmon Summit Trail Comment
  UC168989  Lotus denticulatus Joseph P. Tracy 1912-7-26 3845 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  SEINET12158899  Lotus denticulatus J. P. Tracy 1934-1 13219 Humboldt Horse Mountain 1433 Comment
  UC1223398  Lotus formosissimus J. P. Tracy 1935-6-8 13941 Humboldt just e Eureka city limits (on Santa Clara Tract); Eureka 0 Comment
  UC15635  Lotus micranthus Harley P. Chandler May 1901 1136 Humboldt Humboldt Bay North Coast Ranges 3 Comment
  RSA90403  Lotus unifoliolatus F. W. Peirson 1926-7-12 7033 Humboldt Redwood Creek, Orick. Comment
  UC1197298  Lotus wrangelianus Joseph P. Tracy 1918-7-1 4978 Humboldt 3 mi s Point of Cape; Northern Coast Ranges, Cape Mendocino 3 Comment
  UC1565794  Lotus yollabolliensis R. Spellenberg 1990-7-9 10230 Humboldt ca 1 mi n Blake Mtn. (extreme e edge of county, 7 air mi wnw of Hyampom, 40 mi s of Calif. Hwy. 299 and Berry Summit on USFS Rd 1); South Fork Mountain 1767 Comment
  UC314622  Ludwigia palustris Joseph P. Tracy 1926-8-12 7765 Humboldt near the S. Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  CAS-BOT-BC342555  Luina hypoleuca L. B. Kildale 1930-7-7 10262 Humboldt Chaparall [Chaparral] Mt at Bug Creek 914 Comment
  CAS-BOT-BC201193  Lupinus L. R. Abrams 1922-6-25 8235 Humboldt 2 mi south of Fortuna 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
  CDA27368  Lupinus albifrons var. collinus K. Eickhoff, C. M. Witte 2005-6-24 15 Humboldt Approximately 13 miles south of Highway 299 on NF1. Comment
  CHSC32840  Lupinus arboreus Lora L. Anderson 1981-4-26 17 Humboldt Ca. 0.5 mi e of ocean (Moonstone Beach) 0.5 mi w of Hwy 101, 11.5 mi n of Arcata. 0 Comment
  HSC36196  Lupinus arboreus John Rehling 1975-5-15 85 Humboldt Comment
  SEINET3132550  Lupinus arboreus J. W. Johnson 1961-9-3 1078 Humboldt Arcata, Samoa Peninsula. Christenson Farm Comment
  SEINET10452624  Lupinus arboreus Mary Susan Taylor 1990-8-22 Taylor 6070 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  HSC38083  Lupinus bicolor Thomas W. Nelson, James Nelson 1976-5-30 2605 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC156991  Lupinus bicolor Joseph P. Tracy 1908-6 2693 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC503008  Lupinus bicolor Joseph P. Tracy 1932-5-1 9890 Humboldt vicinity Garberville; Northern Coast Ranges, vicin of Garberville 121 Comment
  CDA27401  Lupinus bicolor J. Lumbert, J. Robinson 2005-6-8 6 Humboldt 0.4 mile south of Highway 299 on Titlow Hill Road. Comment
  HSC58603  Lupinus latifolius G. L. Clifton, Griswold 1979-7-25 10856 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC75464  Lupinus latifolius J. O. Sawyer 1980-7-18 3613 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC39678  Lupinus latifolius subsp. latifolius Thomas W. Nelson, Jane P. Nelson 1976-6-16 2744 Humboldt Along FS 2S08, between Alder Springs & Pine Mtn. 1494 Comment
  UC1223259  Lupinus lepidus var. lobbii Joseph P. Tracy 1940-7-7 16672 Humboldt ridge back Clear Lake (Grouse Mountain); , ridge back of Clear Lake 1524 Comment
  UC1223264  Lupinus littoralis Joseph P. Tracy 1934-7-21 13481 Humboldt Samoa Sand Dunes Comment
  RSA32650  Lupinus luteolus Doris K. Kildale 1926-7-11 2347 Humboldt Bear River at Capetown. Comment
  UC1197252  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1897-6-23 202 Humboldt Elk River Valley Northern Coast Region, Humboldt Bay Region, Elk River Valley (region about Humboldt Bay) 0 Comment
  UC774984  Lupinus polyphyllus var. polyphyllus Carl B. Wolf 1937-8-11 9144 Humboldt 1/2 mi e Alton; e of Alton 21 Comment
  HSC34627  Lupinus rivularis Lon Hall 1975-3-27 294 Humboldt Near Shelter Cove, above large meadow in bend of Bear Creek 366 Comment
  UCD109516  Lupinus rivularis P. B. Kennedy 1929-6-12 s.n. Humboldt Around Eureka. Comment
  UC502994 Image available Lupinus tracyi Joseph P. Tracy 1932-7-15 10598 Humboldt ridges e Corral Prairie; Klamath Mountains; ridges E of Corral Prairie, Trinity Summit, Klamath Mts., Humboldt Co. 1828 Comment
  HSC14059  Luzula comosa R. I. Bonn 1965-5-7 31 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  UC1152123  Luzula comosa Joseph P. Tracy 1930-7-16 8903 Humboldt near McKay camp; South Fork Mountain 1676 Comment
  UC1152129  Luzula comosa Joseph P. Tracy 1930-7-23 9128 Humboldt at Cold Springs (Grouse Mountain); , at Cold Springs 1432 Comment
  CAS-BOT-BC441228  Luzula macrantha Joseph P. Tracy 1926-5-2 7446 Humboldt North Coast Ranges: Willow Creek Canyon, near Ruby Creek 609 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
  HSC75690  Luzula parviflora Bill Copeland 1980-7-2 310 Humboldt Near Snow Camp Mtn. 1311 Comment
  UC184975  Luzula parviflora Joseph P. Tracy 1908-7-16 2877 Humboldt opposite Buck Mountain (in valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River, Dinsmore's 762 Comment
  UCD98226  Lychnis coronaria Philip A. Munz 1952-6-27 17799 Humboldt Boise Creek Public Camp west of Willow Creek. 365 Comment
  JEPS371  Lycopodiella inundata Joseph P. Tracy 1928-9-8 8504 Humboldt Big Lagoon Northern Coast Ranges (in peat bog) 6 Comment
  HSC97349  Lycopodium clavatum D. E. Anderson 1965-11-26 4176 Humboldt 2 mi. E. of Moonstone Beach Comment
  LA5619  Lycopodium clavatum H. E. Parks; W. K. Parks 1932-7-30 1132 Humboldt Trinidad, Camp 21, Hammond Lumber Company 152 Comment
  SEINET6166096  Lycopodium clavatum W. Roderick 1967-9-15 s.n. Humboldt East of Trinidad, Camp 18 Georgia-Pacific Co. 30 Comment
  POM87675  Lysichiton americanus Le Roy Abrams, Rimo C. Bacigalupi 8277 Humboldt Big Lagoon. South of Orick. Comment
  HSC35500  Lysichiton americanus Petrovich May 1961 Humboldt Warren Cr. Comment
  HSC36094  Lysichiton americanus Michael L. Chase 1973-5-14 10 Humboldt Along Van Duzen at junction with Yager Creek 37 Comment
  HSC39969  Lysichiton americanus Linda M. Barker 1976-3-22 1346 Humboldt 3 mi. W of Arcata, near rifle range at NE corner Comment
  POM284990  Madia citriodora Lyman Benson 1929-7-11 1784 Humboldt Humboldt County: S of Garberville Comment
  CAS-BOT-BC342802  Madia elegans J. Clausen 1932-9-18 688 Humboldt 8.2 miles west of Bull Creek Store; near summit of ridge 914 Comment
  RSA44409  Madia elegans subsp. elegans H. M. Pollard 1948-7-24 s.n. Humboldt Near Orleans Comment
  HSC38100  Madia exigua Thomas W. Nelson, James Nelson 1976-5-30 2623 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC343019  Madia gracilis Joseph P. Tracy 1934-7-18 13432 Humboldt North Coast Ranges. Grouse Mountain 1524 Comment
  CAS-BOT-BC343024  Madia gracilis Doris K. Kildale 1927-7-1 3619 Humboldt Alton Hill 30 Comment
  UC175195  Madia gracilis Joseph P. Tracy 1913-6-22 4258 Humboldt Dinsmore's Ranch; Valley of Van Duzen River, Buck Mountain 762 Comment
  POM362170  Madia gracilis subsp. gracilis Thomas W. Nelson, Jane P. Nelson 1977-7-4 3607 Humboldt Along road north from Alder Spring 1555 Comment
  CAS-BOT-BC343591  Madia sativa J. Clausen 1932-9-18 678 Humboldt 11 miles south of Ferndale on the road to Capetown Comment
  HSC40379  Madia sativa Linda M. Barker 1976-6-14 1592 Humboldt 3 mi. W of Arcata Comment
  HSC45076  Madia sativa R. Sutherland 1976-8-13 7 .13876 Humboldt 213 Comment
  HSC5990  Madia sativa W. D. Stevens 1967-7-22 63 Humboldt Above the dirt road from old Hwy. 101 to the top of N bank of Mad River Comment
  UC1052187  Madia sativa J. L. Meyer 1954-10-11 29 Humboldt 3 mi n Blocksburg; Quadrangle 29A3 457 Comment
  UC1199398  Madia sativa Joseph P. Tracy 1936-6-9 14896 Humboldt at Domingo Hill; North Coast Region, Cape Mendocino 213 Comment
  RSA24302  Mahonia nervosa C. B. Wolf 1941-2-25 9961 Humboldt 9 mi. e. of Orick on rd. to Weitchpec. 610 Comment
  RSA25705  Mahonia nervosa C. B. Wolf 1941-7-27 11085 Humboldt North Coast Range Mts., Blue Lake to Willow Creek Rd. (U.S. #299) 2 mi. east of n. fk. of Mad River. 152 Comment
  HSC47498  Maianthemum dilatatum Sheila Logan 1978-4-10 23 Humboldt McKinleyville, foot of Hiller Ave. at Ocean Rd., near Pacific ocean and Mad River 46 Comment
  UCR198042  Maianthemum dilatatum Daniel Sanchez-Mata, S. Rivas-Martinez, M. Costa, M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Klamath Glenn. Prairie Creek State Park, Prairie Creek Trail 70 Comment
  CAS-BOT-BC508510  Maianthemum dilatatum O. Con Mary 1921-9-26 s.n. Humboldt Eureka Comment
  CAS-BOT-BC508515  Maianthemum dilatatum Doris K. Kildale 1925-12-20 1342 Humboldt Big Lagoon Comment
  CAS-BOT-BC508517  Maianthemum dilatatum A. A. Heller 1937-6-8 15899 Humboldt Bishop Pine Lodge, 3 miles north of Trinidad Comment
  HSC15591  Maianthemum dilatatum W. F. Nickel 1965-5-15 Humboldt 0.5 mi. E of Arcata on rd. to Arcata Reservoir Comment
  HSC15597  Maianthemum dilatatum W. D. Stevens 1964-5-12 15 Humboldt E end of 14th St., Arcata Comment
  HSC95095  Maianthemum dilatatum Andrea Pickart 2002-6-30 132 Humboldt Lamphere Dunes Unit, Humboldt Bay Wildlife Refuge Comment
  CAS-BOT-BC512773  Maianthemum stellatum D. Baxter; S. Boren; C. Williams 1994-5-6 47 Humboldt West side of Titlow Road 0.35 miles south of Highway 299 853 Comment
  HSC54205  Malacothrix clevelandii Griswold, Butler 1979-7-12 7248 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC98525  Malacothrix clevelandii Cara Witte 2008-7-10 845 Humboldt National Forest 1. 2 miles north of intersection with Forest Service Road 4N09. 1267 Comment
  HSC40015  Malacothrix floccifera Thomas W. Nelson, Jane P. Nelson 1976-7-1 2916 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  HSC41005  Malacothrix floccifera J. O. Sawyer 1975-10-17 2716 Humboldt Along road to Brush Mountain Lookout 1189 Comment
  CAS-BOT-BC140138  Malus fusca Doris K. Kildale 1926-7-10 2343 Humboldt Big Lagoon Comment
  UC1197979  Malva nicaeensis Joseph P. Tracy 1924-6-28 6699 Humboldt Northern Coast Ranges, Hydesville Hydesville; Northern Coast Ranges, Hydesville 60 Comment
  HSC7031  Marah oregana R. D. Zortman 1963-5-15 47 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  HSC7035  Marah oregana D. E. Anderson 1962-3-31 1952 Humboldt Coastal area of Prairie Creek State Park Comment
  UC1222345  Marah oregana Joseph P. Tracy 1951-5-20 19402 Humboldt Barry Ridge Kneeland Prairie 762 Comment
  UC175778  Marrubium vulgare Joseph P. Tracy 1912-7-27 3878 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC204870  Matricaria occidentalis Joseph P. Tracy 1918-6-16 4955 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC1197426  Medicago polymorpha Joseph P. Tracy 1936-6-8 14868 Humboldt Trinidad Bluffs Trinidad 3 Comment
  CAS-BOT-BC281328  Melica harfordii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mountain Trail 1524 Comment
  HSC98816  Melica harfordii Cara Witte 2007-7-25 581 Humboldt Forest Service Road 5N10. Approximately 2.5 miles south from intersection with Forest Service Road 5N41. 1270 Comment
  UC1132276  Melica harfordii H. L. Person 1932-5-12 Humboldt 10 mi n Garberville (Redwood Highway); Briceland Quad. Comment
  CAS-BOT-BC262468  Melica subulata Harley P. Chandler 1901-5-1 1174 Humboldt North Coast Ranges. Humboldt Bay 30 Comment
  HSC71789  Melica subulata Gail Newton 1980-6-16 181 Humboldt Near Monks Camp. 1097 Comment
  UC1145128  Melica subulata Joseph P. Tracy 1942-6-2 17107 Humboldt Valley of South Yager Creek 762 Comment
  UC552706  Melica subulata Joseph P. Tracy 1935-5-25 13898 Humboldt Dobbyn Creek; Northern Coast Ranges 152 Comment
  SEINET10925519  Melica subulata Harley P. Chandler Chandler 1174 Humboldt 30 Comment
  HSC15523  Melilotus indicus Jana Kattenhorn 1970-10-28 154 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  UC162806  Melilotus indicus J. P. Tracy October 1904 2142 Humboldt Immediate vicinity of Eureka 0 Comment
  UC154001  Mentha canadensis Joseph P. Tracy 1908-6 2930 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  POM174071  Mentha canadensis Joseph P. Tracy 1918-9-29 5105 Humboldt South Fork of Eeel River 4 miles above the mouth. Comment
  JEPS63455  Mentha pulegium Joseph P. Tracy 1923-6-20 6336 Humboldt Briceland 304 Comment
  RSA600662  Mentha pulegium Louis C. Wheeler 1950-8-14 6779 Humboldt Shelter Cove. Comment
  JEPS86110  Menziesia ferruginea Wayne Roderick 1965-6-5 Humboldt 0.5 mi s of Del Norte-Humboldt County line 152 Comment
  RSA287065  Menziesia ferruginea Glen Thompson 1937-08 s.n. Humboldt Patrick's Park, north of Trinidad. 15 Comment
  POM202654  Micropus californicus M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles N of Garberville Comment
  SEINET7887162 Image available Micropus californicus Unknown 1942-1 s.n. Humboldt Harris Road, 1 mile east of Garberville 30 Comment
  UC1223187  Micropus californicus var. californicus Joseph P. Tracy 1942-7-1 17360 Humboldt along Van Duzen River (opposite Buck Mountain); along Van Duzen River, Dinsmore's 762 Comment
  UC164802  Micropus californicus var. californicus Joseph P. Tracy 1906-7-4 2527 Humboldt near Hydesville (Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  CAS-BOT-BC322622  Microseris Joseph P. Tracy 1936-6-28 15027 Humboldt Lake Prairie, Baldt Mountain 1066 Comment
  UC582735  Microseris laciniata subsp. leptosepala Joseph P. Tracy 1935-6-23 3973 Humboldt French Camp Ridge Comment
  HSC73576  Microseris nutans M. A. Baker 1980-7-19 3011 Humboldt Near Bret Hole. 1814 Comment
  HSC56069  Mimulus breweri G. L. Clifton, Griswold 1979-7-31 11735 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC40847  Mimulus breweri Thomas W. Nelson 1976-7-9 3003 Humboldt W side of ridge S of E peak of Mount Lassic group 1524 Comment
  HSC20707  Mimulus dentatus D. E. Anderson 1965-9-5 4074 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  HSC22805  Mimulus guttatus D. E. Anderson, J. P. Smith 1970-5-10 5062 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC71741  Mimulus guttatus M. A. Baker 1980-6-26 2421 Humboldt Near Sims Creek 610 Comment
  RSA18014  Mimulus guttatus Carl B. Wolf 1927-8-22 779 Humboldt Big Lagoon. Comment
  HSC20729  Mimulus guttatus D. E. Anderson 1961-8-25 1741 Humboldt 1.5 mi. S of Trinidad Comment
  HSC45092  Mimulus guttatus R. Sutherland 1978-5-12 13 .12578 Humboldt 290 Comment
  RSA244981  Mimulus guttatus Jerry Parker 1968-11-11 237 Humboldt Clam Beach. Bottom of Patrick Creek. Comment
  JEPS86687  Mimulus nanus var. nanus L. R. Heckard with T. I. Chuang 1990-7-15 6770 Humboldt below and s of road South Fork Mountain (summit of Blakes Mountain); , Blakes Mountain 1800 Comment
  UC582596  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15570 Humboldt halfway between Cold Springs and Blake Lookout; Northern Coast Ranges, South Fork Mountain 1676 Comment
  JEPS11056  Mimulus primuloides Joseph P. Tracy 1935-7-26 14258 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  HSC42454  Mimulus pulsiferae Barbara Kelly 1977-7-16 539 Humboldt On Horse Mtn. Rd., 1/2 mi. below where it forks; 1.5 mi. below summit 1402 Comment
  UC902075  Mitella caulescens Joseph P. Tracy 1949-6-25 18348 Humboldt near Box Camp; Trinity Summit 1524 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
  CHSC97981  Moehringia macrophylla J. McIntire; S. Lyon 2005-6-10 7 Humboldt 7.4 mi south of Hwy 299 on Forest Service Rd. NF1. Cold Springs Camp. 1402 Comment
  UC1198327  Moehringia macrophylla Joseph P. Tracy 1927-6-12 8131 Humboldt Horse Mountain 1432 Comment
  UC1103534  Moehringia macrophylla Joseph P. Tracy 1930-7-18 9074 Humboldt near McKay Camp South Fork Mountain 1676 Comment
  CAS-BOT-BC215566  Monardella odoratissima subsp. pallida Joseph P. Tracy 1926-6-20 7657 Humboldt Horse Mountain 1310 Comment
  HSC74409  Monardella odoratissima subsp. pallida Gail Newton 1980-8-10 2023 Humboldt Near Blake Mtn. 1798 Comment
  HSC35703  Monardella sheltonii Thomas W. Nelson, B. Reinhardt 1975-7-30 2119 Humboldt Beside private road to Pilot Rock Comment
  CAS-BOT-BC318614  Monardella villosa L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek road. Comment
  UC416723  Monardella villosa subsp. villosa P. E. Goddard 1901-7 3 Humboldt Hupa Valley Comment
  UC34369  Monotropa hypopitys Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC93840  Montia howellii Claire Golec, Shawn Magnuson 1999-5-12 Humboldt Pacific Lumber Co. land, W side of Van Duzen River, 10 mi. W of Bridgeville Comment
  POM163985  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka Comment
  CAS-BOT-BC445163  Montia parvifolia Harley P. Chandler 1901-5-1 1261 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  HSC55061  Montia parvifolia G. L. Clifton, Terry Griswold 1979-7-31 11613 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  JEPS17211  Montia parvifolia Milo S. Baker 1923-7-31 143 a Humboldt 6 mi s of Kneeland (and w of Iaqua, Booths Run); North Coast, Booths Run Comment
  HSC16103  Morella californica J. W. Johnson 1961-11-27 1431 Humboldt Woods along the trail of the Hunt Farm, Samoa Comment
  SEINET200834 Image available Muhlenbergia filiformis Doris Kildale Humboldt Trinity Summit. 1524 Comment
  UC1103785  Muhlenbergia filiformis H. E. Parks and Joseph P. Tracy 1934-6-27 11083 Humboldt Grouse Mt. Northern Coast Ranges 1432 Comment
  JEPS70788  Myosotis discolor Joseph P. Tracy 1936-5-17 14809 Humboldt Lawrence Creek at crossing of Kneeland Rd.; Lawrence Creek 457 Comment
  HSC3746  Myosotis discolor D. E. Anderson 1965-5-22 3720 Humboldt Road to Blocksburg, 3 mi. S of Bridgeville. Comment
  HSC90317  Myosotis discolor Jean Hanson 1980-5-24 76 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka, W end of island, base of dike on S side Comment
  HSC12417  Myosotis sylvatica D. Santana 1970-11-15 115 Humboldt Near Fickle Hill Rd. and 7th St. Comment
  HSC34644  Myosotis sylvatica John Palmer 1975-4-9 295 Humboldt 40 yds. E of intersection of 17th at Bayview St., Arcata Comment
  HSC13475  Myriophyllum sibiricum R. L. Jarvis 1962-4-29 24 Humboldt Clam Beach Lagoons, .5 mi. S of Little River on Hwy. 101 0 Comment
  HSC48727  Myriophyllum sibiricum W. B. Strickland 1968-3-28 Humboldt McClellan Mtn. Rd., off Hwy. 36 above Bridgeville 457 Comment
  RSA256481  Narthecium californicum Joseph P. Tracy 1930-7-17 9003 Humboldt South Fork Mountain; in wet meadow at McKay Camp 1677 Comment
  RSA43883  Navarretia atractyloides H. M. Pollard 1948-8-5 s.n. Humboldt Orleans Comment
  JEPS70235  Navarretia atractyloides Joseph P. Tracy 1925-7-12 7206 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC55328  Navarretia divaricata Griswold, Butler 1979-7-12 7167 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC55854  Navarretia divaricata G. L. Clifton, Griswold 1979-7-25 10837 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1198597  Navarretia divaricata Joseph P. Tracy 1926-6-27 7689 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  HSC76562  Navarretia divaricata var. divaricata Denis Kearns 1981-7-22 324 Humboldt Near Whiteys Peak. 1487 Comment
  UC1198607  Navarretia intertexta Joseph P. Tracy 1934-7-9 13345 Humboldt Dobbyn Creek 152 Comment
  POM208984  Navarretia intertexta Lincoln Constance 1934-5-27 697 Humboldt Sandbar of south fork of Eel River at Dyerville bridge 43 Comment
  JEPS69509  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1930-7-10 8864 Humboldt Brannan Mountain Northern Coast Ranges, Brannan Mountain 1219 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
  CAS-BOT-BC232739  Navarretia sinistra subsp. pinnatisecta Doris K. Kildale 1926-8-2 2444 Humboldt Flannegan's Mill near Strong's Station, Van Duzen River Comment
  HSC34708  Navarretia squarrosa Thomas W. Nelson 1974-7-20 1696 Humboldt McKeown Ranch N of Dinsmore Comment
  UC146171  Navarretia squarrosa J. P. Tracy 1904-7-31 2135 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC7214  Nemophila macrocarpa William Wightman Price 1890-7-1 s.n. Humboldt Jarnagan Comment
  UC177199  Nemophila menziesii var. atomaria Joseph P. Tracy 1913-6-13 4094 Humboldt opposite Buck Mountain (in valley of Van Duzen River); Northern Coast Ranges, in valley Van Duzen River, Buck Mt 762 Comment
  HSC71171  Nemophila parviflora Thomas W. Nelson 1977-5-30 3416 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  CAS-BOT-BC219409  Nemophila parviflora Kenneth Clark 1980-3-23 533 Humboldt Shelter Cove. South fork Dead Man's [Deadman] Gulch 60 Comment
  UC562594  Nemophila pedunculata Joseph P. Tracy 1927-4-2 7873 Humboldt facing South Fork Eel River (Phillipsville); Northern Coast Ranges, , South Fork Eel River 121 Comment
  UC562590  Nemophila pedunculata Joseph P. Tracy 1927-3-27 7858 Humboldt near South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC69696  Nuphar polysepala R. Kalal 1980-6-1 10 Humboldt Essex Pond 15 Comment
  CDA38488  Oenanthe sarmentosa Margaret Bellue 1932-9-28 s.n. Humboldt Arcata. 0 Comment
  UC642344  Oenanthe sarmentosa Joseph P. Tracy 1938-8-20 16123 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UCD127756  Oenanthe sarmentosa Collector Unknown 1932-7-1 s.n. Humboldt California Seed Lab. Comment
  CAS-BOT-BC171604  Oenothera wolfii Carl B. Wolf 1937-9-9 9307 Humboldt Coast, 2 mi. so. of Cape Mendocino 6 Comment
  UC203546  Oenothera wolfii Joseph P. Tracy 1918-7-1 4968 Humboldt moist bluff Northern Coast Ranges, Cape Mendocino (three mi s of point of cape) 3 Comment
  HSC102042  Oreostemma alpigenum var. andersonii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 945 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  UC1197454  Orobanche fasciculata Joseph P. Tracy 1908-6-7 2610 Humboldt Northern Coast Ranges. Butter Valley on Mad River. Comment
  CAS-BOT-BC500233  Orobanche pinorum Henry M. Pollard 1946-8-11 s.n. Humboldt Perch Creek, Orleans region Comment
  HSC16675  Orobanche uniflora T. M. Mingo May 1965 Humboldt W of College cove near brush Comment
  HSC34915  Orobanche uniflora Thomas W. Nelson, James Nelson 1975-5-24 1843 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC98561  Orobanche uniflora Cara Witte 2008-6-15 733 Humboldt Coldspring Camp. 1410 Comment
  UC35308  Orobanche uniflora subsp. occidentalis W. C. Blasdale 1896-6-8 Humboldt Graham's. Comment
  UC906645  Orogenia fusiformis Joseph P. Tracy 1942-6-23 17252 Humboldt near top Trinity Summit (w. of Water-Dog Lakes) 1828 Comment
  HSC54740  Orthilia secunda G. L. Clifton, Griswold 1979-7-26 10203 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  UC1222796  Orthocarpus imbricatus Joseph P. Tracy 1951-6-26 19562 Humboldt halfway between Snow Camp and Twin Lakes; halfway between Snow Camp and Twin Lakes Comment
  HSC56139  Osmorhiza occidentalis G. L. Clifton 1979-8-1 11960 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  JEPS14244  Osmorhiza occidentalis Joseph P. Tracy 1932-7-12 10471 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  HSC48765  Osmorhiza occidentalis Brad Klipfel 1973-6-16 101 Humboldt Along ridge trail SE of N Trinity Mountain 1829 Comment
  UC646621  Osmorhiza occidentalis Joseph P. Tracy 1930-6-29 8810 Humboldt Buck Mountain; lower foothills of nw slope 762 Comment
  HSC12761  Oxalis articulata subsp. rubra M. J. Athey 1970-11-8 12 Humboldt Along Arcata blvd., in Arcata. Comment
  CHSC32846  Oxalis oregana Lora L. Anderson 1981-4-25 3 Humboldt Ca. 1/2 mi s of Redwood Creek, 4 mi n on Redwood Valley Rd. off hwy 299 w 16 mi ne of Arcata. 457 Comment
  HSC16704  Oxalis oregana Francis Winter 1960-4-23 Humboldt 1 mi. E of Korbel 30 Comment
  UC1197420  Oxalis oregana Joseph P. Tracy 1926-4-25 7413 Humboldt Strong's Station Northern Coast Ranges 60 Comment
  UCD110988  Oxalis oregana T. E. Weier 1942-5-21 s.n. Humboldt near Dyerville, Highway 101. Comment
  HSC16715  Oxalis pes-caprae W. F. Nickel 1965-5-15 Humboldt W side of College Elementary School, H.S.C. Campus Comment
  SD64134  Oxalis rubra W. Bertsch 1953-7-30 221 Humboldt Redwoods-Dyerville-Highway 101 60 Comment
  UC1103428  Oxalis trilliifolia Joseph P. Tracy 1932-7-15 10584 Humboldt ridges e Corral Prairie (Trinity Summit); Klamath Mtns 1828 Comment
  HSC79057  Packera macounii D. K. Imper 1983-7-12 659 Humboldt Blue Creek Mtn. Comment
Read comments
May 27 2013
  POM89798  Panicum acuminatum var. acuminatum Joseph P. Tracy 1920-8-15 5356 Humboldt Klamath River at Bluff Creek 152 Comment
  CDA2147  Panicum miliaceum T. R. Haig 1975-8-27 Humboldt Korbel. 0 Comment
  CAS-BOT-BC253924  Parapholis incurva S. K. Harris; J. P. Tracy 1936-6-6 3218 Humboldt Near railroad station, Eureka Comment
  UC1222448  Parentucellia viscosa Joseph P. Tracy 1934-6-18 13230 Humboldt Eureka 6 Comment
  UCD123256  Parentucellia viscosa L. R. Heckard 1960-8-31 1221 Humboldt about 0.5 mile south of Dry lagoon Beach State Park. Comment
  UC492219  Parnassia californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8919 Humboldt Northern Coast Ranges, South Fork Mountain at Mckay Camp South Fork Mountain; Northern Coast Ranges, , Mckay Camp 1676 Comment
  HSC41014  Paxistima myrsinites J. P. Smith, J. O. Sawyer 1976-5-2 8636 Humboldt 8 mi. W of Loop Rd. on Hoopa Reservation along Redwood Creek-Hoopa Rd. Comment
  HSC98075  Paxistima myrsinites Cara Witte 2007-7-12 525 Humboldt Forest Service Road 5N10C. Approximately 1 mile south for intersection with Ammon Ridge Road. 1252 Comment
  UC902125  Paxistima myrsinites Joseph P. Tracy 1942-6-23 17245 Humboldt 2 mi. e. Box Camp; Trinity Summit 1524 Comment
  HSC99452  Pedicularis groenlandica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 102 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC179970  Pedicularis groenlandica Joseph P. Tracy 1914-7-4 4533 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges 1066 Comment
  HSC55334  Pedicularis racemosa Terry Griswold, Marvin Butler 1979-7-12 7178 Humboldt Near Groves Prairie, close to the town of Willow Creek 1256 Comment
  HSC76045  Pedicularis racemosa Walter Overton, Marvin Butler 1979-8-2 12563 Humboldt Near Bret Hole, close to the town of Hoopa. 1554 Comment
  HSC72695  Pellaea brachyptera Gail Newton 1980-6-24 595 Humboldt Near Ladder Rock 1570 Comment
  CHSC33041  Penstemon anguineus Thomas Nelson; Jane Nelson 1976-7-1 2907 Humboldt The Lassics. Growing along east side of Red Lassic; beside rd. 1S07. 1676 Comment
  HSC75553  Penstemon anguineus J. O. Sawyer, R. J. Cole 1977-7-3 3010 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  HSC70977  Penstemon deustus Gail Newton 1980-7-22 1678 Humboldt Near Devils Backbone 1554 Comment
  HSC100913  Penstemon jaffrayanus Carl C. Marshall Jun 1886 275 Humboldt Trail E of Hoopa. Comment
  HSC98095  Penstemon laetus subsp. sagittatus Cara Witte 2007-7-3 417 Humboldt Along National Forest 1. 1/4 mile north of Road V. 1268 Comment
  UC1586908  Penstemon parvulus Juha Pykala and D. H. Norris 1987-6-10 1523 Humboldt on Onion Lake Road about 1-2 mi s from Onion Lake; Six Rivers National Forest, s from Onion Lake 1280 Comment
  CDA41849  Penstemon parvulus Peter Haggard 1993-7-22 PDR# 1061613 Humboldt Bair Road southwest of Hoopa. 0 Comment
  HSC1077  Pentagramma triangularis D. E. Anderson 1965-11-21 4170 Humboldt 3-4 mi. S of Weitchpec along rd. to Hoopa Comment
  HSC1079  Pentagramma triangularis Jack Rockwell 1962-4-29 42 Humboldt S Bank of Van Duzen River, E of Hwy. 101 9 Comment
  SEINET12350908  Pentagramma triangularis E. A. York 1990-1-10 2660 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC61046  Perideridia gairdneri subsp. gairdneri T. Jimerson, J. Pageau 1979-8-10 745 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  UC184323  Perideridia kelloggii Joseph P. Tracy 1912-8-3 3967 Humboldt Dinsmore's Ranch Northern Coast Ranges, valley of Van Duzen River (opposite Buck Mt.) 762 Comment
  HSC45397  Perideridia oregana Thomas W. Nelson, Jane P. Nelson 1977-9-3 3721 Humboldt N of Bear Creek 1494 Comment
  HSC56308  Perideridia parishii subsp. latifolia Overton, Butler 1979-8-2 12627 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC98989  Petasites frigidus var. palmatus Cara Witte 2008-6-4 680 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  HSC100713  Petasites palmatus Carl C. Marshall Apr 1886 54 Humboldt Banks of streams. Comment
  HSC63487  Petrorhagia dubia M. A. Baker 1977-6-6 381 Humboldt Hoopa Indian Reservation Comment
  HSC42200  Phacelia bolanderi Ed Cope 1977-4-23 22 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC672428  Phacelia bolanderi Herbert L. Mason 1928-7-20 4910 Humboldt near Weitchpec; Klamath River Canyon Comment
  SEINET12335255  Phacelia bolanderi F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -304 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC65624  Phacelia californica J. P. Smith 1973-5-26 6871 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC41588  Phacelia corymbosa Thomas W. Nelson, Jane P. Nelson 1977-7-4 3576 Humboldt Head of N Fork of Conley Creek 1463 Comment
  UC175732  Phacelia egena Joseph P. Tracy 1913-6-13 4112 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC562574  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1935-5-12 13794 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS1200  Phacelia malvifolia Joseph P. Tracy 1934-6-10 13212 Humboldt DRY LAGOON (Along coast in front South End of Stone Lagoon.) Comment
  UC906636  Phacelia mutabilis Joseph P. Tracy 1947-7-9 17832 Humboldt lower slopes Horse Mountain 1219 Comment
  RSA134090  Phacelia nemoralis subsp. oregonensis L. R. Heckard 1952-5-13 275 Humboldt Above the South Fork of the Eel River, about w miles S of the Humboldt County line. Redwood and Madrone area along U.S. 101. Comment
  UC562570  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1936-6-9 14876 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  UC666591  Phacelia nemoralis subsp. oregonensis W. S. Boyle 1942-5-9 1086 Humboldt within 50 yd Redwood Highway, #101 (overlooking South Fork of the Eel River, 1 mi from n boundary of Mendocino Co.) Comment
  CAS-BOT-BC258864  Phalaris aquatica Henry M. Pollard 1947-9-1 s.n. Humboldt Field near Perch Creek, Orleans region Comment
  UC820491  Phalaris californica John Thomas Howell 1937-7-31 13718 Humboldt between Redwood Creek and Korbel; btw Redwood Creek and Korbel Comment
  UCD88767  Phalaris californica Joseph P. Tracy 1938-6-7 15861 Humboldt N side of Mad River, 1/2 mile E of bridge on Arcata - Blue Lake highway. 30 Comment
  CAS-BOT-BC76566  Philadelphus lewisii Doris K. Kildale 1927-7-2 3661 Humboldt Redmond Creek at Berry's 289 Comment
  HSC20267  Philadelphus lewisii R. E. Thill 1965-4-22 17 Humboldt 1.5 mi. E of Hwy. 101 on N Bank Rd. Comment
  JEPS49622  Philadelphus lewisii Harley P. Chandler June, 1901 1333 Humboldt Campbell Creek North Coast Ranges, Hupa Indian Reservation 152 Comment
  SEINET202724  Philadelphus lewisii subsp. californicus Joseph P. Tracy 1950-6-18 18853 Humboldt Along Redwood Creek, two miles west of Briceland. Comment
  HSC58414  Phleum alpinum Griswold, Butler 1979-7-12 7215 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC74182  Phleum alpinum M. A. Baker 1980-7-22 3105 Humboldt Near Grogan Hole. 1676 Comment
  CAS-BOT-BC250883  Phleum pratense Doris K. Kildale 1926-6-27 2202 Humboldt Laribee Valley 701 Comment
  RSA53856  Phleum pratense Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. Trail 1524 Comment
  UC1326260  Phlox adsurgens Milo S. Baker 1947-8-10 11944 Humboldt 15 mi ne Hoopa (near end of forest road) 1371 Comment
  UC1191121  Phlox douglasii subsp. rigida Joseph P. Tracy 1932-7-18 10699 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  JEPS71116  Phlox gracilis Joseph P. Tracy 1930-6-21 8791 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  HSC15928  Phoradendron serotinum subsp. tomentosum M. C. Hartman 1963-5-11 35 Humboldt Berry summit Comment
  HSC59450  Phoradendron serotinum subsp. tomentosum Kenneth Clark 1979-5-13 280 Humboldt Chezem Rd., off of Hwy. 299, 0.2 mi. W of N end of Chezem Rd. 610 Comment
  JEPS42597  Phoradendron villosum Lincoln Constance 1934-5-29 737 Humboldt Bull Creek Region, S. Fork Eel R., Upper Look Prairie 365 Comment
  POM210091  Phyllospadix torreyi H. E. Parks 1933-11-12 s.n. Humboldt Spruce Cove, Trinidad. Comment
  HSC78982  Picea sitchensis L. P. Janeway 1984-12-5 1196 Humboldt N Spit of Humboldt Bay, BLM lands near fence Comment
  UC55646  Picea sitchensis J. Burtt Davy 1899-7-30 6186 Humboldt in gulches in back Ferndale; North Coast Ranges Comment
  UCD134684  Picea sitchensis Jo Ann Olson; Gary R. Robbins 1969-4-26 35 Humboldt North plateau above Fern Canyon, Prairie Creek Redwoods State Park. 60 Comment
  NY34410  Picea sitchensis N. H. Holmgren 1969-6-24 3614 Humboldt Prairie Creek Redwoods, in forest above coast near Del Norte County line Comment
  CAS-BOT-BC78288  Pinus attenuata A. A. Heller 1917-7-7 12811 Humboldt Alder Springs grade below Rattlesnake [spring] Spring Comment
  CAS-BOT-BC78289  Pinus attenuata A. A. Heller 1917-7-7 12811 Humboldt Alder Springs grade below Rattlesnake [spring] Spring Comment
  MACF019659  Pinus contorta E. R. Blakley 1966-8-17 6799 Humboldt Patrick's Point 5 mi. North of Trinidad. 60 Comment
  UC573158  Pinus contorta subsp. contorta H. S. Yates 1936-6-16 5660 Humboldt 1 mi sw Samoa 6 Comment
  CAS-BOT-BC79027  Pinus ponderosa Doris K. Kildale 1928-7-1 5314 Humboldt Klamath River at Orleans Comment
  CAS-BOT-BC136468  Piperia candida Harley P. Chandler 1901-6-1 1385 Humboldt Field redacted by CAS, contact the data manager for more information 304 Comment
  HSC104337  Piperia candida James Regan, Humboldt Redwood Co., LLC Jun 2015 30 Humboldt Nelson Creek 457 Comment
  JEPS64433  Piperia elegans W. L. Jepson 1921-8-11 9415 Humboldt Big Lagoon Comment
  RSA95501  Pityopus californicus Harry L. Buckalew s.n. Humboldt James Irvine Trail - 2 miles from the ocean; Prairie Creek State Park. Comment
  HSC41224  Plagiobothrys hispidulus Thomas W. Nelson, Jane P. Nelson 1977-7-4 3593 Humboldt Margin of pond above Alder Springs 1585 Comment
  POM160833  Plagiobothrys reticulatus Joseph P. Tracy 1918-7-5 2010 Humboldt White Thorn Valley. 305 Comment
  UC1239572  Plagiobothrys reticulatus Joseph P. Tracy 1932-5-1 9884 Humboldt Garberville Northern Coast Ranges, Garberville 121 Comment
  UC179943  Plagiobothrys reticulatus Joseph P. Tracy 1914-5-30 4486 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC552842  Plagiobothrys reticulatus Joseph P. Tracy 1935-6-2 13923 Humboldt Big Lagoon 3 Comment
  UC552846  Plagiobothrys reticulatus Joseph P. Tracy 1935-5-25 13860 Humboldt Fort Seward 106 Comment
  UC582611  Plagiobothrys reticulatus Joseph P. Tracy 1936-6-5 14857 Humboldt 6 mi se Arcata (Fickle Hill); Fickle Hill 609 Comment
  UC668232  Plagiobothrys reticulatus Joseph P. Tracy 1938-6-9 15890 Humboldt top of ridge 3 mi w Harris 914 Comment
  JEPS60968  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1935-6-8 13949 Humboldt in front of South End of Stone Lagoon; Dry Lagoon 3 Comment
  RSA178571  Plagiobothrys reticulatus var. rossianorum Joseph P. Tracy 1942-6-15 17142 Humboldt Miranda; along South Fork of Eel River. 122 Comment
  UC28010  Plantago lanceolata J. Burtt Davy 1899-6-16 5553 Humboldt near Scotia; North Coast Ranges Comment
  HSC69585  Plantago lanceolata R. Kalal 1980-7-20 90 Humboldt .2 mi. N of Arcata Marsh project 2 Comment
  HSC54709  Plantago major Overton, Butler 1979-7-26 10057 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  UC585992  Plantago subnuda Joseph P. Tracy 1927-6-26 8220 Humboldt Stone Lagoon 9 Comment
  UC845458  Platanthera hyperborea var. gracilis Milo S. Baker 1926-1 51 -1926 Humboldt South Fork Mountain South Fork Mountain (eastern Humboldt County, Forest Road 4 1/2 mi n highway) Comment
  RSA382868  Platanthera leucostachys Brad W. Klipfel 1973-7-31 255 Humboldt Along ridge trail south east of North Trinity Mountain 1829 Comment
  UC1037486  Platanthera leucostachys Milo S. Baker 1927-8-21 2480 b Humboldt near Bald Mt. 914 Comment
  UC1196421  Platanthera leucostachys Joseph P. Tracy 1927-8-22 8342 Humboldt near High Prairie (Bald Mountain); Bald Mountain 1066 Comment
  UC1222186  Platanthera sparsiflora Joseph P. Tracy 1950-7-25 19069 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC91637  Platystemon californicus M. Louise Hutchinson 1913-4-1 s.n. Humboldt Eureka. Comment
  UC168947  Plectritis brachystemon Joseph P. Tracy 1905-4-30 2175 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC999830  Plectritis brachystemon S. C. Dyal 1938-6-10 739 Humboldt near Capetown Comment
  UC1239597  Plectritis congesta Joseph P. Tracy 1938-7-7 16032 Humboldt North Coast Ranges, Grouse Mountain, at Cold Springs Grouse Mountain; North Coast Ranges, , Cold Springs 1432 Comment
  UC999834  Plectritis congesta S. C. Dyal 1938-6-11 719 b Humboldt 10 mi w of Dinsmore (on McClellan Mountain); McClellan Mountain Comment
  RSA506997  Plectritis congesta subsp. brachystemon H. E. Parks, Joseph P. Tracy 1934-6-14 11022 Humboldt Horse Mountain. 1220 Comment
  HSC44410  Plectritis macrocera R. York 1978-5-6 162 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 Comment
  CAS-BOT-BC458165  Pleuricospora fimbriolata Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1219 Comment
  HSC63190  Pleuricospora fimbriolata M. A. Baker 1979-6-28 942 Humboldt Middle fork of Mill Creek. Comment
  UC1103803  Pleuropogon refractus Joseph P. Tracy 1926-5-22 7514 Humboldt Prairie Creek; Northern Coast Ranges, Prairie Creek 152 Comment
  HSC26358  Poa annua T. O. Osborne 1970-6-18 41 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  UC525625  Poa annua Joseph P. Tracy 1934-3-11 13148 Humboldt Weitchpec 121 Comment
  HSC99416  Poa bulbosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 65 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
  HSC10821  Poa confinis Francis Winter 1960-4-30 Humboldt Samoa Peninsula, 6 mi. W of Arcata. Comment
  RSA183609  Poa confinis R. I. Bonn 1965-5-7 27 Humboldt Four miles west of Arcata on Lamphere Rd. Comment
  HSC10695  Poa douglasii J. W. Johnson 1962-5-6 1310 Humboldt W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC10704  Poa douglasii R. H. Berg 1963-5-8 67 Humboldt On sand dunes near Lanphere's, Arcata. Comment
  UC665695  Poa douglasii H. E. Parks May, 1934 4805 Humboldt Little River Lagoon Comment
  BLMAR437  Poa macrantha Jennifer Anthony-Wheeler 2008-6-18 437 Humboldt Samoa/Malel Dunes 9 Comment
  SEINET183546 Image available Poa macrantha Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-9 15073 Humboldt Clam Beach 15 miles north of Eureka Comment
  HSC39187  Poa pratensis D. E. Anderson, J. P. Smith 1971-6-28 - 1226 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UC1132739  Poa pratensis subsp. pratensis H. L. Person 1932-5-11 Humboldt Arcata; Eureka Quadrangle Comment
  HSC32621  Poa secunda subsp. secunda D. E. Anderson 1965-5-22 3728 Humboldt Hunt Ranch, 3-4 mi. N of Bridgeville. Comment
  HSC98888  Poa secunda subsp. secunda Cara Witte 2007-6-5 208 Humboldt Along Forest Service Road 4N32. Near Grouse Mountain 1413 Comment
  UC1607861  Poa secunda subsp. secunda H. E. Parks 1926-5-9 7466 Humboldt head of South Yager Creek Comment
  UC525661  Poa secunda subsp. secunda Joseph P. Tracy 1932-7-17 10693 1/2 Humboldt head of Devil's Hole Trinity Summit; Klamath Mts 1828 Comment
  UC525667  Poa secunda subsp. secunda Joseph P. Tracy 1927-5-15 8051 Humboldt w Hoopa Valley (Supply Creek); North Coast Ranges 304 Comment
  UCD91735  Poa secunda subsp. secunda A. H. Murphy 1951-4-9 s.n. Humboldt Ft. Baker Ranch along road between Iron Gate and Dairy Ridge. 304 Comment
  HSC10809  Poa unilateralis R. Long 1964-5-7 Humboldt Samoa. Comment
  UC1988935  Pogogyne zizyphoroides Joseph P. Tracy 1938-7-5 16005 Humboldt Carlotta 5 miles east of town, open flat by old Strong's District School House 45 Comment
  HSC48881  Polycarpon tetraphyllum J. P. Smith, Thomas W. Nelson 1977-6-30 9222 Humboldt Samoa Peninsula just E of the drag strip. Comment
  HSC17220  Polygala californica R. Spellenberg 1964-6-16 435 Humboldt 0.25 mi. W of Hwy. 299 bridge over S Fork of Trinity River Comment
  HSC101998  Polygonum bistortoides M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 897 Humboldt Patterson Meadows 1555 Comment
  UC146191  Polygonum californicum Joseph P. Tracy 1908-6 2922 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  RSA144208  Polygonum coccineum Peter H. Raven 1961-8-22 16575 Humboldt Chileno Valley Comment
  UC132198  Polygonum convolvulus Joseph P. Tracy 1907-8-20 2600 Humboldt near Hydesville; Northern Coast Region 60 Comment
  POM89531  Polygonum douglasii Joseph P. Tracy 1919-9-18 s.n. Humboldt Trinity Summit Comment
  HSC17516  Polygonum paronychia H. E. Parks Feb 1934 4834 Humboldt Stone Lagoon Comment
  RSA286307  Polygonum paronychia Robert F. Thorne 1974-7-29 45080 Humboldt Samoa Dunes. Comment
  HSC75436  Polygonum parryi J. O. Sawyer 1980-7-18 3592 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC672980  Polygonum phytolaccifolium Joseph P. Tracy 1933-7-25 12840 Humboldt Grouse Mountain; near springs 1524 Comment
  HSC98684  Polygonum sawatchense subsp. sawatchense Cara Witte 2007-6-20 312 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  UCSB29342  Polypodium californicum Phelps, M. 1972-3-23 Humboldt 1.5 mi from Garberville along Old Briceland Rd., 1,500 yds. N of roadside 213 Comment
  CAS-BOT-BC76844  Polypodium glycyrrhiza Donald Branscomb 1959-2-1 s.n. Humboldt Trinidad Comment
  CAS-BOT-BC76842  Polypodium glycyrrhiza Ira L. Wiggins 1957-6-20 14134 Humboldt Forest, east side of highway, Trinidad. Comment
  CAS-BOT-BC72085  Polypodium scouleri W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  UC62442  Polypodium scouleri W. C. Blasdale 1896-6-2 Humboldt w Eureka Eureka Comment
  UCD136910  Polypodium scouleri Linda M. Barker 1976-3-11 1327 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  HSC1116  Polypodium scouleri Gene S. Van Horn 1962-5-26 33 Humboldt 250 E 17th St., Arcata 61 Comment
  CAS-BOT-BC233074  Polypogon interruptus Joseph P. Tracy 1927-7-16 8260 Humboldt Eureka 60 Comment
  JEPS82390  Polypogon interruptus A. S. Hitchcock 1915-7-13 839 Humboldt Eureka Comment
  SEINET200579 Image available Polypogon maritimus J. P. Tracy 1930-10-19 9236 Humboldt Eel River on gravel bars Alton to Fortuna 0 Comment
  UC526768  Polypogon maritimus Joseph P. Tracy 1933-7-20 12811 Humboldt along Mad River near Blue Lake; along Mad River, near Blue Lake 15 Comment
  CHSC31286  Polypogon monspeliensis Mark Stopher 1980-7-18 121 Humboldt On banks of Elk River, south of Eureka. Comment
  UC183446  Polypogon monspeliensis J. P. Tracy 1912-10-20 3996 Humboldt near Loleta 30 Comment
  UC50607  Polypogon monspeliensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-15 5549 Humboldt near Scotia; near Scotia Comment
  RSA10061  Polypogon viridis Joseph P. Tracy 1926-7-4 7697 Humboldt [Unspecified] Comment
  HSC1156  Polystichum imbricans D. E. Anderson 1963-9-21 2832 Humboldt 0.5 mi. E of Willow Creek Comment
  HSC12977  Polystichum munitum M. Athey, D. La Conte 1970-11-28 2 Humboldt HSU campus Comment
  HSC13039  Polystichum munitum D. Santana, C. Kline Oct 1970 24 Humboldt HSC Campus Comment
  UC1196668  Populus trichocarpa E. Ethel Tracy 1918-4-20 Humboldt Scotia Northern Coast Ranges, on Eel River (on Eel River) 30 Comment
  UC1222285  Populus trichocarpa Joseph P. Tracy 1950-8-8 19290 Humboldt Croghen Hole on Trinity Summit (at head of hole, edge of rock area); on Trinity Summit, Croghan Hole 1676 Comment
  UC1225789  Populus trichocarpa Joseph P. Tracy 1948-4-11 17970 Humboldt 2 mi e Dyerville (Eel River); Eel River 48 Comment
  CAS-BOT-BC454064  Potamogeton pusillus subsp. pusillus Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  UC302159  Potamogeton richardsonii E. G. Pluke 1926-8-1 Humboldt w of Dows Prairie (lagoon at mouth of Widow White Creek); Widow White Creek 3 Comment
  CAS-BOT-BC143078  Potentilla anserina subsp. pacifica Carl B. Wolf 1927-8-22 792 Humboldt Big Lagoon Comment
  HSC102139  Potentilla glandulosa subsp. glandulosa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1043 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC98037  Potentilla gracilis var. gracilis Cara Witte 2007-7-17 540 Humboldt Board Camp Mountain. Intersection of Forest Service Road 4N38 and National Forest 1. 1395 Comment
  UC30037  Potentilla gracilis var. gracilis Chesnut and Drew 1888-8-6 Humboldt Redwood Creek Comment
  HSC57029  Prosartes hookeri Overton, Butler 1979-7-24 9653 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC74648  Prosartes hookeri M. A. Baker 1980-5-17 1211 Humboldt Near Le Perron Peak 792 Comment
  HSC15484  Prosartes smithii W. R. Brigham 1962-5-20 16 Humboldt Side of Old Hwy. 101, N of Big Lagoon rd. Comment
  HSC75750  Prosartes smithii Bill Copeland 1980-7-2 354 Humboldt Near Snow Camp Mtn. 1311 Comment
  SBBG58724  Prosartes smithii R. Hartwell 1938-8-3 101 Humboldt near Garberville Comment
  HSC15480  Prosartes smithii W. F. Nickel 1965-5-15 Humboldt 0.5 mi. E of Arcata on rd. to Arcata Reservoir Comment
  HSC59658  Prosartes smithii Marla J. Carollo 1979-4-10 4 Humboldt Side of the logging trail behind dorms of HSU campus Comment
  HSC100507  Prunella vulgaris Carl C. Marshall Jun 1886 249 Humboldt Everywhere. Comment
  HSC26841  Prunella vulgaris Thomas W. Nelson 1971-1-8 321 Humboldt Ferndale next to Co. Fair Grounds Comment
  JEPS62489  Prunella vulgaris var. lanceolata Joseph P. Tracy 1937-6-28 15370 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  POM283342  Prunella vulgaris var. lanceolata Lyman Benson 1928-7-10 443 Humboldt Rolling hills by Humboldt Bay, 4 mi. S Eureka 61 Comment
  UCD125323  Prunella vulgaris var. lanceolata K. Esau 1934-5-6 s.n. Humboldt Fort Seward. 152 Comment
  CAS-BOT-BC159988  Prunus emarginata Harley P. Chandler 1901-6-1 1273 Humboldt Hupa Indian Reservation 1066 Comment
  JEPS44945  Prunus emarginata Joseph P. Tracy 1924-5-25 6685 Humboldt on Big Lagoon Prairie, Big Lagoon Big Lagoon Prairie; Northern Coast Region, Big Lagoon, Big Lagoon Prairie 6 Comment
  CAS-BOT-BC154740  Prunus virginiana var. demissa Doris K. Kildale 1926-5-16 1841 Humboldt Horse Mountain 792 Comment
  JEPS20480  Pseudognaphalium californicum Joseph P. Tracy 1937-7-11 15415 Humboldt vicinity of Garberville 121 Comment
  HSC40261  Pseudognaphalium ramosissimum Linda M. Barker 1976-8-2 1678 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  CAS-BOT-BC80111  Pseudotsuga menziesii Doris K. Kildale 1925-12-27 1463 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC80120  Pseudotsuga menziesii Doris K. Kildale 1926-11-27 2840 Humboldt Alton Hill, old terrace above lower Van Duzen River Comment
  UC1174841  Pseudotsuga menziesii var. menziesii P. C. Everett and E. K. Balls 1959-10-25 23971 Humboldt 7 mi sw from Ferndale (along Old Coast Road to Capetown.); Old Coast Road 563 Comment
  UCD135129  Pseudotsuga menziesii var. menziesii P. Zinke 1950-8-3 145 Humboldt California Forest and Range Experiment Station. 3 miles south of Harris. Comment
  HSC1160  Pteridium aquilinum var. pubescens Gene S. Van Horn 1962-5-25 27 Humboldt 200 ft. N of main house at 250 E 17th St., Arcata 61 Comment
  HSC54568  Pteridium aquilinum var. pubescens Walter Overton, Butler 1979-7-24 9596 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 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
  POM232028  Pteridium aquilinum var. pubescens I. L. Wiggins 1930-7-11 4684 Humboldt Near Samoa Comment
  HSC41289  Pteridium aquilinum var. pubescens Brad Klipfel 1974-7-27 483 Humboldt Horse Mtn. in draw to the N of the towers Comment
  CAS-BOT-BC460599  Pyrola aphylla Doris Kildale Gillespie 1931-6-7 10645 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  JEPS58839  Pyrola aphylla Milo S. Baker 1923-7-31 168 Humboldt Booth's Run, North Coast Comment
  JEPS58852  Pyrola asarifolia Milo S. Baker 1923-7-20 63 Humboldt Redwood House Road Comment
  HSC41292  Pyrola dentata Brad Klipfel 1974-7-27 491 Humboldt Horse Mtn. Comment
  CAS-BOT-BC462743  Pyrola dentata Clarence R. Quick 1959-7-24 59 =25 Humboldt Bee Mt., ca. 12 miles SW of Orleans Comment
  CAS-BOT-BC466039  Pyrola picta Joseph P. Tracy 1932-7-14 10569 Humboldt Trinity Sumimt near Corral Prairie 1584 Comment
  HSC99031  Quercus chrysolepis Cara Witte 2008-7-3 827 Humboldt Friday Ridge Road/ 6N08. Approximately 1 mile north of intersection with National Forest 1. 1567 Comment
  UCD45382  Quercus chrysolepis Lincoln Constance 1934-6-15 885 Humboldt Summit of Grasshopper Peak; el. C. 3200 ft. Bull Creek Region. South Fork Eel River, Humboldt County, California. 1158 Comment
  SEINET13953254 Image available Quercus chrysolepis R. Earing, C. Cavanaugh, C. Collins 1987-1 109 Humboldt Grays Falls campground approximately 10 miles E. of Willow Creek on highway 299 along the trinity river. Comment
  UC667990  Quercus garryana Joseph P. Tracy 1935-10-6 14753 Humboldt Kneeland Prairie 762 Comment
  JEPS37758  Quercus kelloggii W. L. Jepson 1903-6 2203 Humboldt Harris Ridge 1127 Comment
  UC1196513  Quercus sadleriana Joseph P. Tracy 1932-7-15 10579 Humboldt near Corral Prairie; Klamath Mountains 1524 Comment
  UC1225942  Quercus sadleriana Joseph P. Tracy 1947-8-24 17909 Humboldt near Box Camp; Trinity Summit 1524 Comment
  RSA622137  Quercus vacciniifolia J. M. Tucker 1948-9-3 1851 Humboldt Horse Mountain, at junction of roads to Grouse Mountain and to Horse Mountain Mine, Six Rivers National Forest. 1463 Comment
  UC1135804  Quercus vacciniifolia A. E. Wieslander 1931-5-19 204 Humboldt near Orleans; Klamath Forest, Hoopa Quad. Comment
  HSC26634  Ranunculus alismifolius var. alismifolius Thomas W. Nelson 1971-5-31 452 Humboldt Vernal pond Comment
  CAS-BOT-BC379173  Ranunculus aquatilis var. aquatilis Joseph P. Tracy 1937-5-30 15311 Humboldt Larrabee Creek; in shallow pond near Bosworth's 366 Comment
  UC162340  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1911-7-10 3486 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  HSC18135  Ranunculus californicus var. cuneatus A. H. Teshima 1963-2-15 2 Humboldt Moonstone Beach Comment
  UC552300  Ranunculus flammula Joseph P. Tracy 1934-7-13 13390 Humboldt Dow's Prairie 60 Comment
  UC1103010  Ranunculus flammula Joseph P. Tracy 1930-8-3 9149 Humboldt pond near Little Van Duzen River; Northern Coast Ranges, Buck Mountain 762 Comment
  HSC39443  Ranunculus muricatus Linda M. Barker 1976-4-30 1404 Humboldt 3 mi. W of Arcata Comment
  JEPS55087  Ranunculus occidentalis Joseph P. Tracy 1918-5-28 4948 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1196231  Ranunculus occidentalis Joseph P. Tracy 1934-4-8 13173 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  HSC49168  Ranunculus occidentalis J. O. Sawyer 1977-4-23 2837 Humboldt Along Bald Hills Rd. E of Hoopa Comment
  UC1196227  Ranunculus occidentalis Joseph P. Tracy 1921-4-24 5458 Humboldt slopes facing South Fork of Eel River; Northern Coast Ranges, Phillipsville 121 Comment
  HSC68716  Ranunculus orthorhynchus Jacqueline Greenleaf 1980-5-23 89 Humboldt Near Dinsmores 735 Comment
  RSA20857  Ranunculus orthorhynchus var. platyphyllus Carl B. Wolf 1937-6-18 8897 Humboldt 1/2 miles E of Alton. 21 Comment
  HSC18217  Ranunculus parviflorus D. E. Anderson 1963-5-25 2472 Humboldt 5 mi. S of Ferndale on Wildcat Rd. Comment
  UC1713273  Ranunculus pusillus Joseph P. Tracy 1919-5-31 5177 Humboldt opposite Willow Creek (shores of pond); Northern Coast Regions, Trinity River, Lack Pond 152 Comment
  CDA3482  Ranunculus repens T. C. Fuller 1968-7-3 17442 Humboldt North side of Elk River Road, 2 miles east of Highway 101 freeway, ca. 5 miles south of Eureka. 0 Comment
  JEPS42054  Rhamnus californica Lincoln Constance 1934-6-13 872 Humboldt just below Redwood Hwy. (e bank of South Fork Eel River, n Dyerville Flat); South Fork Eel River, Bull Creek Region, Dyerville Flat Comment
  POM246499  Rhamnus californica Carl B. Wolf 1934-6-30 5842 Humboldt Back of Shelter cove. 61 Comment
  UC165816  Rhamnus californica subsp. californica Joseph P. Tracy 1909-7-31 3037 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  LA207876  Rhamnus purshiana Doris K. Kildale; 1929-6-25 8394 Humboldt Eureka, Pine's Pasture Comment
  UC1197984  Rhamnus purshiana J. P. Tracy 1901-8-11 1276 Humboldt immediate vicinity Eureka 0 Comment
  UCR136663  Rhamnus purshiana H. E. Parks, S. T. Parks 1937-1 24018 Humboldt North Coast, Spruce Cove, Trinidad Comment
  CAS-BOT-BC56616  Rhododendron macrophyllum Mrs. A. H. Rodda 1932-5-20 s.n. Humboldt Redwood Highway Comment
  HSC33060  Rhododendron macrophyllum Thomas W. Nelson 1974-5-7 1239 Humboldt Old Kneeland Rd. Comment
  RSA471003  Rhododendron macrophyllum E. S. Spalding 1925-04 s.n. Humboldt Arcata. Comment
  UC153961  Rhododendron macrophyllum Joseph P. Tracy 1906-6-10 2489 Humboldt Humboldt Bay Region, Kneeland Prairie Road Kneeland Prairie Road; Northern Coast Region, Humboldt Bay Region, Kneeland Prairie 609 Comment
  CHSC19505  Rhododendron neoglandulosum Norman Dennis 1965-6-3 143 Humboldt Big Lagoon County Park, southwest corner of Big Lagoon. Comment
  CAS-BOT-BC199710  Rhododendron occidentale Doris K. Kildale 1929-4-21 7431 Humboldt Patrick's [Patrick] Creek - between Trinidad & Big Lagoon Comment
  CAS-BOT-BC433129  Ribes Milo S. Baker 1926-7-26 186 -'26 Humboldt Bridgeville-Red Bluff Highway, S. Fork Mt. 1066 Comment
  HSC99095  Ribes binominatum Cara Witte 2008-7-28 944 Humboldt Buck Flat. Near intersection of National Forest 1 and Forest Service Road 5N01. 1591 Comment
  HSC103240  Ribes bracteosum Jade Paget-Seekins 2010-4-18 10 Humboldt Near the bottom of Bald Hills Road, on the edge of the parking lot for Redwood Creek trailhead. 19 Comment
  CAS-BOT-BC169114  Ribes inerme var. inerme Brant Rogers; Arnold Tiehm 1978-6-2 944 Humboldt Badger Mt., Badger Creek near Badger Cabin on the E side of the Mt. - Sheldon National Wildlife Refuge 1828 Comment
  CAS-BOT-BC169149  Ribes inerme var. klamathense Thomas W. Nelson; Jane P. Nelson 1977-5-30 3420 Humboldt Growing beside State Route 36 just west of Dinsmore at highway bridge over Van Duzen River - North Coast Ranges 731 Comment
  HSC55974  Ribes lacustre G. L. Clifton 1979-7-31 11361 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC38950  Ribes lobbii J. P. Smith, J. O. Sawyer 1975-6-22 8207 Humboldt Six Rivers National Forest, W of Goat Hill Comment
  HSC55679  Ribes lobbii Overton, Butler 1979-7-26 9930 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek. 1326 Comment
  UC492232  Ribes lobbii Joseph P. Tracy 1927-5-15 8065 Humboldt w Hoopa (near summit on Road to Bair's); Northern Coast Ranges, Hoopa Mountain 1066 Comment
  CAS-BOT-BC212477  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie, Trinity Summit, Klamath Mountains 1828 Comment
  HSC103200  Ribes marshallii Jade Paget-Seekins 2010-7-5 34 Humboldt On the trail to Mill Creek Lake, up Big Hill Road, outside of Hoopa. 1655 Comment
  POM214934  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie; Trinity Summit Comment
  UC519248  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt ridges e of Corral Prairie (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1828 Comment
  HSC20318  Ribes menziesii Larry Berti 1968-10-10 Humboldt Comment
  HSC34640  Ribes menziesii J. M. Sauser 1975-4-9 2 Humboldt Old Arcata Rd., 2 mi. S of junction with Jacoby Creek Rd. Comment
  UC1198928  Ribes menziesii Joseph P. Tracy 1933-3-12 10920 Humboldt Ferndale North Coast Ranges 30 Comment
  HSC32154  Ribes roezlii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5594 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC1193213  Ribes roezlii K. Cuff 1950-10-11 129 Humboldt 7 mi n Honeydew; Quad. 28A4 1005 Comment
  UC1563693  Ribes roezlii Barbara Ertter with Thomas J. Delendick 1987-5-16 6938 Humboldt ca. 3 mi e Berry Summit (on Hwy 299, on s side of road above Willow Cr., ca. 20 air mi e of Arcata) 800 Comment
  UC667061  Ribes roezlii var. cruentum Joseph P. Tracy 1934-3-11 13153 Humboldt French Camp Ridge 1066 Comment
  HSC56247  Ribes sanguineum Walter Overton 1979-8-1 12358 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  RSA0018244  Ribes sanguineum S. Ganley 1971-5-29 661 Humboldt Highway 299, along Trinity River. 457 Comment
  HSC39950  Ribes sanguineum var. glutinosum Linda M. Barker 1976-3-22 1334 Humboldt 3 mi. W of Arcata Comment
  JEPS49246  Ribes sanguineum var. glutinosum W. L. Jepson 1902-7-1 1972 Humboldt Hupa Road at Berry's Ranch Redwood Creek Comment
  BLMAR270  Ribes sanguineum var. sanguineum Jennifer Anthony-Wheeler 1999-7-30 270 Humboldt Lacks Creek, growing in Hupa mt quad 1219 Comment
  RSA0018240  Ribes sanguineum var. sanguineum E. R. Johnson 1929-08 1417 Humboldt Arcata Redwood Park. 76 Comment
  HSC103209  Ribes viscosissimum Jade Paget-Seekins 2010-6-30 32 Humboldt Grouse Mountain on Forest Route 1 at the fork with Grouse Mountain Road. 1578 Comment
Read comments
Mar 8 2016
  HSC48397  Ribes viscosissimum Brad Klipfel 1973-6-10 104 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SEINET11803871  Rigiopappus leptocladus J. P. Tracy 1950-1 18996 Humboldt 2 mi S of Burr Valley on Albee Road 1158 Comment
  UC673061  Robinia pseudoacacia Joseph P. Tracy 1934-7-1 13277 Humboldt Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC13753  Romanzoffia californica Lincoln Constance, R. C. Rollins 1942-5-11 2870 Humboldt 3 mi. E of E Fork of Willow Creek Comment
  CAS-BOT-BC74512  Rorippa curvisiliqua S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3438 Humboldt Northwest slopes of Buck Mountain. 822 Comment
  HSC74755  Rorippa curvisiliqua Gail Newton 1981-8-6 2399 Humboldt Near Humbug Creek 1256 Comment
  CAS-BOT-BC146489  Rosa gymnocarpa Doris Kildale Gillespie 1931-6-7 10623 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  UC1199037  Rosa gymnocarpa var. serpentina Joseph P. Tracy 1939-8-16 16404 Humboldt Horse Mountain 1432 Comment
  UC180188  Rosa nutkana var. nutkana Joseph P. Tracy 1914-5-30 4479 Humboldt Alton Northern Coast Region (same locality as Tracy #40000) 30 Comment
  POM275415  Rosa pinetorum Lyman D. Benson 1928-7-12 s.n. Humboldt Clam Beach, Trinidad. 15 Comment
  HSC48415  Rosa rubiginosa J. P. Smith, J. O. Sawyer, Jane Cole 1978-5-21 9926 Humboldt Ishi Pishi Rd., 2.5 mi. from its junction with Hwy. 96 in Orleans 213 Comment
  JEPS45684  Rosa spithamea Joseph P. Tracy 1925-7-12 7196 Humboldt near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC147100  Rubus Joseph P. Tracy 1940-10-17 16762 Humboldt South Fork Station (near Dyerville) 48 Comment
  JEPS47289  Rubus discolor W. L. Jepson 1934-5-7 16715 Humboldt flat over Bull Creek; Flat over Bull Creek Comment
  UCD89725  Rubus fruticosus Lindsay Clark 2008-6-23 KRC 1 Humboldt Nadelos Campground in King Range Conservation Area, 3.8 miles SE of Shelter Cove. 551 Comment
  UC183625  Rubus leucodermis Joseph P. Tracy 1913-6-14 4127 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC467840  Rubus leucodermis Joseph Burtt Davy and Walter C. Blasdale 1899-5 5423 Humboldt near Hubbards Station (nw California); near Hubbards Station Comment
  HSC19656  Rubus parviflorus Lincoln Constance 1934-5-31 756 Humboldt S Fork of the Eel River, Bull Creek Flat, along Bull Creek, W boundary of park to Grasshopper Peak, N side of creek Comment
  HSC70811  Rubus parviflorus Gail Newton 1980-7-23 1748 Humboldt Near Packsaddle Ridge 1463 Comment
  NY1043364  Rubus parviflorus D. K. Gillespie 1938-8-6 15397 Humboldt Eureka Comment
  RSA523867  Rubus parviflorus G. H. True 1936-5-12 473 Humboldt 5 miles S of Kneeland. 457 Comment
  CAS-BOT-BC147360  Rubus pensilvanicus Henry M. Pollard 1948-8-9 s.n. Humboldt Near Orleans Comment
  SEINET10542893  Rubus procerus Charlene A. Bennett 1976-8-6 Bennett 485 Humboldt By hwy 101, n side of orick. Rocky area, densely forested by river. Flowers Pink 30 Comment
  CAS-BOT-BC156723  Rubus spectabilis Mrs. A. H. Rodda 1932-5-22 s.n. Humboldt Redwood Highway Comment
  HSC19688  Rubus spectabilis S. J. Hawks 1965-4-3 16 Humboldt Luffenholtz Beach Comment
  UC902133  Rubus spectabilis Joseph P. Tracy 1948-5-15 17979 Humboldt along Trinity Highway (Willow Creek Canyon, East Fork Willow Creek); Willow Creek Canyon, East Fork Willow Creek 457 Comment
  JEPS47291  Rubus ursinus W. L. Jepson 1932-8-8 16528 Humboldt near Weatt; near Weatt 304 Comment
  UC154259  Rubus ursinus J. P. Tracy 1909-4-18 2952 Humboldt immediate vicinity Eureka; immediate vicin of Eureka 0 Comment
  UC154260  Rubus ursinus J. P. Tracy 1909-4-18 2952 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UCD17618  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 046 Humboldt California. Humboldt County: 6.6 miles north of Ettersburg on road to Honeydew. Comment
  RSA89568  Rubus vitifolius Philip A. Munz 1954-7-23 19865 Humboldt 5 miles SE of Carlotta Comment
  CHSC1353  Rumex acetosella M. Underhill 1952-7-14 Humboldt 30 Comment
  HSC104451  Rumex acetosella Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 26 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC71747  Rumex acetosella M. A. Baker 1980-6-26 2449 Humboldt Near Sims Creek 610 Comment
  UC1541400  Rumex acetosella W. K. Parks Apr 1934 5279 Humboldt Spruce Cove Trinidad Comment
  HSC64435  Rumex acetosella J. P. Smith, Steve Selva 1970-6-30 4101 Humboldt Comment
  UC1225805  Rumex crispus Joseph P. Tracy 1948-9-12 18209 Humboldt meadow at Box Camp Trinity Summit 1463 Comment
Read comments
Aug 5 2009
  UC1541397  Rumex salicifolius var. salicifolius Harold E. Parks 1934-8 5166 Humboldt Big Lagoon Comment
  RSA91333  Rupertia physodes F. W. Peirson 1941-7-27 13095 Humboldt Elk Valley Forestry Camp. Comment
  UC1100023  Ruppia maritima Malcolm A. Nobs and S. Galen Smith 1949-8-3 1181 Humboldt ca 4 mi s Eureka (on Highway 101, near mouth of Elk River) Comment
  UC709432 Image available Rytidosperma penicillatum Joseph P. Tracy 1942-6-28 17267 Humboldt sheep pasture near Hungry Hollow on Bald Mt. 609 Comment
  UCSB34196  Salicornia pacifica Kearns, Dennis 1979-8-24 Humboldt In mean tide area of Arcata Bay, on periphery near the Arcata Boat Launching Facility at the South end of "I" Street Comment
  CAS-BOT-BC129889  Salix bonplandiana Mrs. H. P. Bracelin 1931-5-1 271 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  CAS-BOT-BC103808  Salix exigua W. R. Dudley 1899-6-21 s.n. Humboldt Near forks of Eel River by Dyerville Comment
  JEPS14753  Salix exigua Joseph P. Tracy 1932-6-14 10151 Humboldt at Willow Creek Trinity River Valley; Northern Coast Region 152 Comment
  UC481301  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 969 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  UC490566  Salix exigua var. hindsiana Joseph P. Tracy 1932-6-14 10151 Humboldt at Willow Creek Trinity River valley; Northern Coast Ranges 152 Comment
  CAS-BOT-BC104094  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0969 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC107677  Salix hookeriana John Johnson 1962-3-15 1132 Humboldt Lamphere Ranch, about 4 miles west of Arcata. Sand dune formation along beach Comment
  CAS-BOT-BC107723  Salix hookeriana Alice Eastwood 1923-8-17 12320 Humboldt Samoa Comment
  CAS-BOT-BC107743  Salix hookeriana Joseph P. Tracy 1936-2-23 14772 Humboldt Bank of Eel River - Fortuna 15 Comment
  CHSC31280  Salix hookeriana Mark Stopher 1980-3-26 42 Humboldt Adjoining Hwy 101 right of way near Elk River. Comment
  CHSC9653  Salix hookeriana E. L. Smith 1971-8-18 1024 Humboldt At Manila ca. 4 mi sw of Arcata, on w side of Humboldt Bay opposite Eureka. Comment
  HSC96357  Salix hookeriana Gordon Leppig 1999-4-15 1118 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  HSC96609  Salix hookeriana Gordon Leppig 2005-4-8 2211 Humboldt W end of W Hawthorne St., Eureka 3 Comment
  LA208761  Salix hookeriana Harold E. Parks; 1931-3-24 914 Humboldt Fortuna, on banks of Eel River 10.0 Comment
  RSA152331  Salix hookeriana Joseph P. Tracy 1948-4-4 17958 Humboldt Near Samoa on Humboldt Bay. 6 Comment
  UC1225791  Salix hookeriana Joseph P. Tracy 1948-4-4 17958 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC275502  Salix hookeriana Joseph P. Tracy 1925-2-15 6938 Humboldt Eureka Northern Coast Ranges, Eureka 60 Comment
  UC481263  Salix hookeriana Harold E. Parks 1931-5-28 999 Humboldt Little River Lagoon Comment
  UC504061  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 8 Humboldt Samoa Comment
  UC512105  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1208 Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC512110  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1205 Humboldt 4 1/2 mi s Trinidad (Little River Lagoon); Little River Lagoon Comment
  UCD111034  Salix hookeriana Linda M. Barker 1976-4-13 1380 Humboldt 3 miles west of Arcata. Comment
  CDA39525  Salix hookeriana Patty Adams Jun 1985 s.n. Humboldt Dry Lagoon State Park. 0 Comment
  UC1196576  Salix lasiandra var. lasiandra Joseph P. Tracy 1941-3-26 16816 Humboldt opposite mouth of Willow Creek Lack Pond; Trinity R. Valley 152 Comment
  CAS-BOT-BC107577  Salix lasiolepis Joseph P. Tracy 1934-3-25 13167 Humboldt Blue Slide, on Van Duzen River 91 Comment
  JEPS12909  Salix lasiolepis Joseph P. Tracy 1927-4-10 7885 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS12943  Salix lasiolepis Joseph P. Tracy 1930-6-15 8737 Humboldt near Bosworth's Larrabee Creek; Northern Coast Ranges 457 Comment
  JEPS13095  Salix lasiolepis Joseph P. Tracy 1936-10-17 15200 Humboldt on Van Duzen River Blue Slide 91 Comment
  JEPS14764  Salix lasiolepis Joseph P. Tracy 1932-8-27 10753 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  POM161046  Salix lasiolepis Joseph P. Tracy 1926-9-19 7801 Humboldt Valley of S Yager Creek 762 Comment
  UC469410  Salix lasiolepis Joseph P. Tracy 1927-4-10 7885 Humboldt Redwood Creek, at Berry's 274 Comment
  UC469414  Salix lasiolepis Joseph P. Tracy 1927-5-13 7995 Humboldt Redwood Creek, at Berry's 274 Comment
  UC506506  Salix lasiolepis Joseph P. Tracy 1932-10-8 10865 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC512039  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1323 Humboldt e Redwood Creek (w slope of mt., on Trinity Hwy); Berry's Mountain 762 Comment
  UC519329  Salix lasiolepis Joseph P. Tracy 1933-5-14 12181 Humboldt Willow Creek, near county road bridge Trinity River Valley 152 Comment
  UCD111584  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-13 01255 Humboldt Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road. Comment
  SEINET12003294  Salix lasiolepis J. P. Tracy 1950-1 19374 Humboldt Klamath River near Slate Creek Comment
  CAS-BOT-BC107287  Salix lasiolepis var. bigelovii Joseph P. Tracy 1933-3-19 10934 Humboldt along Van Duzen R. 228 Comment
  CAS-BOT-BC107290  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01239 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107295  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01247 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107297  Salix lasiolepis var. bigelovii Harold E. Parks 1931-5-14 0963 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  CAS-BOT-BC125613  Salix melanopsis Doris K. Kildale 1928-6-10 5084 Humboldt Strongs Station - Van Duzen River Comment
  SBBG57931  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt E of Redwood Hwy, 6 km S of Alton Comment
  UC1173582  Salix melanopsis Joseph P. Tracy 1939-8-5 16393 Humboldt Van Duzen R. at Dinsmore's; Van Duzen R. 737 Comment
  UC1196573  Salix melanopsis Joseph P. Tracy 1931-10-3 9703 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC176691  Salix melanopsis Joseph P. Tracy 1913-6-18 4198 Humboldt Dinsmore's Ranch opposite Buck Mt.; North Coast Ranges, Van Duzen R. Valley 762 Comment
  UC275492  Salix melanopsis Joseph P. Tracy 1925-7-26 7209 Humboldt near S. Fork Trinity River Valley; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC469450  Salix melanopsis Joseph P. Tracy 1931-6-14 9580 Humboldt Van Duzen R., Alton Alton; Northern Coast Region, Van Duzen R., Alton 30 Comment
  UC469454  Salix melanopsis Joseph P. Tracy 1931-9-7 9634 Humboldt Trinity R. Valley at Willow Creek Bridge; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC481307  Salix melanopsis Harold E. Parks and Joseph P. Tracy 1931-5-17 972 Humboldt mouth of Willow Creek at Trinity R.; Willow Creek 150 Comment
  UC511972  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1252 Humboldt Mad River at Engelhart gravel pit (2 mi. e. of Redwood Hwy. and above Blue Lake Rd.) Comment
  HSC20087  Salix scouleriana D. Sutherland, R. Spellenberg, A. Sylvester 1966-3-27 1359 Humboldt 1 mi. E of N Fork of the Mad River along Hwy. 299 Comment
  HSC56010  Salix scouleriana Gilbert Muth 1979-7-31 11493 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  UC212995  Salix scouleriana Joseph P. Tracy 1919-9-23 5283 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC470448  Salix scouleriana Joseph P. Tracy 1927-3-27 7846 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, , Willow Creek 152 Comment
  UC490528  Salix scouleriana Joseph P. Tracy 1932-7-17 10694 Humboldt head of Devil's Hole; Klamath Mts., Trinity Summit 1828 Comment
  UC490530  Salix scouleriana Joseph P. Tracy 1932-7-13 10507 Humboldt open groung at Corral Prairie (back from the meadows); Klamath Mts., Trinity Summit, Corral Prairie 1524 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
  UC512088  Salix scouleriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1219 Humboldt pine barrens near coast 1 mi. n. Samoa Comment
  CAS-BOT-BC128952  Salix sitchensis H. E. McMinn 1922-8-4 338 Humboldt Along Van Duzen River - 18 miles from Fortuna 6 Comment
  CAS-BOT-BC128998  Salix sitchensis Harold E. Parks 1931-3-24 910 Humboldt Trinidad 90 Comment
  HSC99439  Salix sitchensis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 89 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM161040  Salix sitchensis Joseph P. Tracy 1926-12-5 7833 Humboldt Blue Slide on van Duzen River. 91 Comment
  UC173584  Salix sitchensis Joseph P. Tracy 1935-7-24 14187 Humboldt Trinity Summit near Ranger Station; Trinity Summit 1828 Comment
  UC490534  Salix sitchensis Joseph P. Tracy 1932-7-13 10506 Humboldt wet meadow at Corral Prairie; Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC511992  Salix sitchensis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1240 Humboldt floodplain of Van Duzen R. at Blue Slide; Van Duzen R. 91 Comment
  UC537983  Salix sitchensis Joseph P. Tracy 1934-9-22 13671 Humboldt mouth of Mad R.; North Coast Ranges, Mad R. 9 Comment
  UC526722  Salix tracyi Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC56467  Sambucus nigra subsp. caerulea Griswold, Butler 1979-7-12 7275 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC74427  Sambucus racemosa var. racemosa Gail Newton 1980-8-10 2056 Humboldt Near Blake Mtn. 1707 Comment
  HSC19724  Sanguisorba minor D. E. Anderson 1963-5-25 2491 Humboldt Ca. 2 mi. S of Capetown Comment
  CHSC68485  Sanicula arctopoides Vernon H. Oswald 1997-4-10 8330 Humboldt Elk Head, north end of Trinidad State Beach. Along the edge of the bluffs overlooking the ocean. 30 Comment
  HSC37578  Sanicula arctopoides J. D. Ackerman 1975-6-10 448 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  HSC37921  Sanicula arctopoides Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  HSC39006  Sanicula bipinnatifida Thomas W. Nelson, Jane P. Nelson 1976-5-31 2648 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  HSC21635  Sanicula crassicaulis D. V. Sanford 1963-4-23 42 Humboldt Comment
  HSC77963  Sanicula crassicaulis L. P. Janeway, Paul Wilson 1984-5-7 762 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  HSC82103  Sanicula crassicaulis Thomas W. Nelson, Jane P. Nelson 1980-5-25 5264 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  HSC56313  Sanicula graveolens Overton, Butler 1979-8-2 12649 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC65834  Sanicula tracyi R. York 1980-5-23 622 Humboldt Near Buck Mtn. 1524 Comment
  OBI55124  Sanicula tracyi Joseph P. Tracy 1947-6-25 17717 Humboldt Dinsmore's along Van Duzen Rivers opposite Black Mtn 762 Comment
  UC1197078  Sanicula tuberosa Joseph P. Tracy 1918-5-28 4946 Humboldt Northern Coast Ranges, on Bald Mt., High Prairie High Prairie; Northern Coast Ranges, Bald Mt., High Prairie 1066 Comment
  UC1368468  Sanicula tuberosa R. K. Gierisch and D. H. Esplin 1969-7-1 3531 Humboldt Six Rivers Forest/Experimental Area, Grouse Mt. Grouse Mt.; Six Rivers Forest/Experimental Area, Grouse Mt. 1584 Comment
  UC562449  Sarcodes sanguinea Joseph P. Tracy Jul 16-19 1930 8943 Humboldt South Fork Mountain, near McKay Camp 1676 Comment
  UC709459  Saxifraga marshallii Joseph P. Tracy 1941-3-26 16834 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  POM266005  Saxifraga mertensiana Lincoln Constance, Reed C. Rollins 1942-5-11 2869 Humboldt 3 miles W of East Fork of Willow Creek. Comment
  UC161581  Saxifraga mertensiana Joseph P. Tracy 1911-6-4 3217 Humboldt 5 mi from The Coast (along Little River); Northern Coast Region, Little River 121 Comment
  HSC102002  Saxifraga oregana M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 903 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  SEINET8754002 Image available Scandix pecten-veneris Richard R. Halse 2015-1 9381 Humboldt Along U.S. Hwy. 101 ca. 2.5 miles southeast of Weott 123 Comment
  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
  HSC79388  Schoenoplectus americanus Kenneth Clark 1980-5-10 651 Humboldt Shelter Cove, western beach of Point Delgada at 10 ft. above high tide Comment
  HSC7477  Schoenoplectus tabernaemontani J. P. Tracy, H. E. Parks 1931-5-17 9421 Humboldt Lack Pond, in Trinity River Valley opposite Willow Creek 152 Comment
  UC198641  Scirpus cernuus Joseph P. Tracy 1917-6-10 4821 Humboldt at Eureka; Northern Coast Region, at Eureka 0 Comment
  HSC40102  Scirpus microcarpus Thomas W. Nelson, James Nelson 1976-7-28 3048 Humboldt Alder Springs Campground along 2S08 1555 Comment
  UC668007  Scirpus microcarpus Joseph P. Tracy 1934-6-21 13242 Humboldt near Fields Landing; near Fields Landing 6 Comment
  UCSB55386  Scirpus microcarpus Wolf, Carl 1937-9-11 Humboldt Redwood Highway, 3 mi. N of Orick at Davison's Ranch; on Prairie Creek 60 Comment
  JEPS95121  Scirpus pungens Vernon Oswald and Lowell Ahart 1997-9-4 8848 Humboldt Big Lagoon County Park, at sw edge of Big Lagoon Big Lagoon; North Coast Region, Big Lagoon County Park, Big Lagoon 3 Comment
  UC175805  Scoliopus bigelovii Joseph P. Tracy 1913-3-9 4017 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC15639  Scoliopus bigelovii D. E. Anderson 1964-2-23 2904 Humboldt Near Indian Creek on Kneeland-Bridgeville Rd. Comment
  SEINET3991343  Scoliopus bigelovii Unknown 1950-4-20 18611 Humboldt One mile west of Dinsmore's; along Van Duzen river, opposite Buck Mountain 762 Comment
  UCD18586  Scoliopus bigelovii Roman Gankin 1956-3-17 104 Humboldt off US Hwy 101, south boundary of Jenson Grove, near creek. Comment
  UC1103134  Scribneria bolanderi Joseph P. Tracy 1932-6-26 10275 Humboldt North Coast Ranges, Fort Baker Ranch Fort Baker Ranch Fort Baker Ranch; North Coast Ranges, Fort Baker Ranch 762 Comment
  UC175798  Scutellaria antirrhinoides Joseph P. Tracy 1912-7-26 3842 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC25792  Scutellaria antirrhinoides Harley P. Chandler June, 1901 1323 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 152 Comment
  UC1222866  Scutellaria antirrhinoides Joseph P. Tracy 1950-7-31 19231 Humboldt near Clear Lake (area back of White Rock, Friday Ridge); Grouse Mountain, Friday Ridge 1524 Comment
  HSC59362  Sedum laxum subsp. heckneri M. A. Baker 1978-7-9 623 Humboldt Confluence of the Trinity River and Tish Tang A Tang Creek Comment
  UC1198839  Sedum laxum subsp. heckneri Joseph P. Tracy 1933-8-30 13015 Humboldt Grouse Mountain Grouse Mountain (on rock ledge) 1371 Comment
Read comments
Aug 17 2011
  HSC70725  Sedum radiatum Gail Newton 1980-7-14 1520 Humboldt Near Deadman Ridge 1097 Comment
  HSC72663  Sedum radiatum M. A. Baker 1980-6-26 2469 Humboldt Near Sims Creek 610 Comment
  UC14456  Sedum radiatum Chesnut and Drew August, 1888 Humboldt Comment
  UC967446  Sedum radiatum Reid Moran 1951-6-13 3485 Humboldt w slope Buck Mountain; w slope Buck Mountain 853 Comment
  UC1198830  Sedum spathulifolium Joseph P. Tracy 1926-7-25 7747 Humboldt on rocks at point called Devil's Canyon Northern Coast Region, , Devil's Canyon (Big Lagoon) 152 Comment
  HSC40630  Sedum spathulifolium var. spathulifolium Thomas W. Nelson, Jane P. Nelson 1977-5-15 3379 Humboldt Beside Hwy. 36 just W of Grizzly Creek Campground 152 Comment
  SBBG19224  Selaginella oregana L. L. Kiefer 1963-8-6 769 Humboldt Patrick's Pt St Park, N side of Lookout Rock 45 Comment
  SEINET10472835  Senecio Mary Susan Taylor 1982-10-24 Taylor 5185 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  UC201252  Senecio aronicoides Chestnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  RSA275307  Senecio elegans Thomas W. Nelson 1978-4-23 3880 Humboldt Adventive on coastal dunes northwest of Samoa Comment
  UC1223021  Senecio glomeratus Joseph P. Tracy 1950-7-12 19032 Humboldt Cameron Hill 762 Comment
  SBBG62728  Senecio hydrophilus R. Hartwell 1938-8-6 113 Humboldt near Eureka Comment
  HSC56353  Senecio integerrimus var. major Griswold, Butler 1979-7-10 6324 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  BLMAR294  Senecio integerrimus var. major Jennifer Anthony-Wheeler 2002-4-30 294 Humboldt Clark Butte 670 Comment
  CAS-BOT-BC364015  Senecio integerrimus var. major Duart V. Brown 1947-4-2 29 Humboldt Near Sweed [Sweet] Creek, Trinity River 457 Comment
  CAS-BOT-BC364017  Senecio integerrimus var. major Alice Eastwood; John Thomas Howell 1937-6-23 4840 Humboldt 9 miles from Kneeland on road to Yager Comment
  HSC76417  Senecio jacobaea D. K. Imper 1981-7-21 888 Humboldt Near Table Bluff 38 Comment
  CDA7632  Senecio jacobaea E. Eberwein 1958-9-4 Humboldt William Lowry property, Bear River, Ferndale. 0 Comment
  UCD135618  Senecio minimus S. W. Cosby 1921-9-27 s.n. Humboldt south of Ferndale. Comment
  HSC102598  Senecio triangularis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1585 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC74001  Senecio triangularis M. A. Baker 1980-7-22 3106 Humboldt Near Grogan Hole. 1676 Comment
  HSC63881  Senecio triangularis M. A. Baker 1979-6-27 923 Humboldt Edge of Hoopa Indian Reservation Comment
  CAS-BOT-BC85839  Sequoia sempervirens Rudolf W. Becking 1968-11-27 s.n. Humboldt Weott, Humboldt Redwoods State Park, Federation Grove. Comment
  SEINET3876375 Image available Sequoia sempervirens Richard R. Halse 1989-5-13 3842 Humboldt Along U.S. Hwy 101, 2 miles south of Weott.; 0 108 Comment
  SEINET5334844  Sequoia sempervirens W. D. Billings 1940-6-28 1356 Humboldt 1/4 mile north of Trinidad Comment
  HSC98920  Sericocarpus oregonensis var. oregonensis Cara Witte 2008-8-16 1032 Humboldt Intersection of National Forest 1 and Forest Service Road 4N06. 1252 Comment
  SEINET11802379  Sericocarpus rigidus J. P. Tracy 1950-1 19378 Humboldt about 3 mi SW of Orleans Comment
  CDA13777  Setaria parviflora P. Haggard 1997-12-12 s.n. Humboldt North Coast Ranges; East of Arcata on North Bank Rd. above Mad River immed. E of Azalea Reserve. Stand approx. 25' in length, growing in recently disturbed area. Perennial. 0 Comment
  RSA46485  Sherardia arvensis Doris K. Kildale 1925-6-7 691 Humboldt [Unspecified] Comment
  HSC102927  Sidalcea M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 885 Humboldt Patterson Meadows 1555 Comment
  HSC100571  Sidalcea diploscypha Carl C. Marshall Jun 1887 467 Humboldt S Humboldt. Comment
  JEPS79985  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1928-6-24 8458 Humboldt between Bridgeville and head Yager (South Yager Creek); Northern Coast Ranges, South Yager Creek 762 Comment
  POM282897  Sidalcea malviflora subsp. malviflora Lyman Benson 1929-6-18 1733 Humboldt North of Arcata Comment
  HSC61193  Sidalcea malviflora subsp. nana Jimerson, J. Pageau 1979-5-24 473 Humboldt Near Orleans 226 Comment
  RSA46857  Sidalcea malviflora subsp. patula Doris K. Kildale 1927-7-1 3624 Humboldt Alton Hill Comment
  UC177001  Sidalcea malviflora subsp. patula Joseph P. Tracy 1912-6-9 3669 Humboldt Alton Northern Coast Region, Alton 30 Comment
Read comments
May 9 2014
  JEPS67257  Sidalcea oregana subsp. eximia Joseph P. Tracy 1917-9-1 4831 Humboldt Murphy meadow Northern Coast Range, , Murphy meadow (Bald Mountain) 1066 Comment
  JEPS67278  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-8-22 15671 Humboldt 2 mi s Field's Landing (at Still Ranch); s of Field's Landing, Still Ranch 6 Comment
  POM160836  Sidalcea oregana subsp. eximia Joseph P. Tracy 1920-7-25 5344 Humboldt Dows Prairie 61 Comment
  HSC102530  Sidalcea oregana subsp. oregana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1517 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  UC1198367  Silene antirrhina Joseph P. Tracy 1919-5-31 5168 Humboldt along Willow Creek ((Tributary of Trinity River) near its mouth); Northern Coast Ranges, along Willow Creek 152 Comment
  RSA47143  Silene californica Doris K. Kildale 1925-3-28 510 Humboldt Fleener Creek - hillside at mouth of valley on coast. Comment
  UC13584  Silene campanulata subsp. glandulosa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  HSC61770  Silene gallica Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. 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
  UC668084  Silene grayi Joseph P. Tracy 1935-7-28 14319 Humboldt head of Devil's Hole , head of Devil's Hole (Trinity Summit) 1828 Comment
  HSC103763  Silene hookeri M. R. Mesler, Sydney Carothers 2013-6-3 1482 Humboldt Near Orleans, ca. 0.6 miles west of NR 15 on FS rd 12N20 790 Comment
  POM172672  Silene hookeri subsp. bolanderi Joseph P. Tracy 1913-6-20 4234 Humboldt Lower foothills of Buck Mountain, on its NW slope. 762 Comment
  HSC4168  Silene laciniata subsp. californica C. B. Wolf 1927-8-29 1196 Humboldt 7 mi. S of Ferndale and Capetown, Bear River Ridge, Mt. Glen Comment
  HSC81656  Silene laciniata subsp. californica Thomas W. Nelson, Jane P. Nelson 1980-7-13 6059 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  UC162883  Silene menziesii Harley P. Chandler June, 1901 1319 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC67883  Silybum marianum J. P. Smith 1973-5-26 6872 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SEINET7879022 Image available Sisyrinchium bellum C. C. Harris, S. K. Harris 1942-1 s.n. Humboldt 3 mile north and 1 mile west of Fernbridge 33 Comment
  SD42554  Sisyrinchium californicum Carl B. Wolf 1937-8-10 2899 Humboldt Big Lagoon, bog at State Park. 6 Comment
  RSA246758  Sisyrinchium californicum Robert F. Thorne, Percy C. Everett 1965-8-7 35177 Humboldt Big Lagoon, south end. 2 Comment
  JEPS62151  Smilacina stellata Lincoln Constance 1934-6-2 783 Humboldt Bull Cr. road to mouth of Bull Cr. (and up creek); South Fork Eel River, Bull Creek Region Comment
  HSC89464  Solanum americanum P. A. Daly 1986-2-23 52 Humboldt Along trails at Trinidad Head 6 Comment
  HSC21296  Solanum aviculare A. H. Teshima 1963-4-20 21 Humboldt Moonstone Beach area Comment
  UCD126873  Solanum aviculare Robert F. Thorne; P. Everett 1965-8-5 35160 Humboldt Samoa Dunes, at edge of Humboldt Bay. 3 Comment
  UC750870  Solanum furcatum E. F. Paddock 1947-7-13 163 Humboldt Trinidad, near boat landing Trinidad Comment
  RSA167235  Solanum umbelliferum Joseph P. Tracy 1950-6-18 18851 Humboldt Open places at edge of thicket, Briceland. Comment
  POM210211  Solidago canadensis subsp. elongata H. E. Parks 1931-07 1056 Humboldt Trinidad. 76 Comment
  CAS-BOT-BC365439  Solidago elongata Doris K. Kildale 1926-6-18 2408 Humboldt Gold Bluffs Comment
  HSC36596  Solidago elongata J. O. Sawyer, Thomas W. Nelson, Linda M. Barker 1975-9-4 1306 Humboldt Megwill Point on Elkhead, N of Trinidad in Trinidad State Beach 15 Comment
  HSC91905  Solidago elongata E. Mackey 1986-7-21 Humboldt Patricks Point State Park; Palmer's Point Comment
  UCR48861  Solidago occidentalis R. D. Goeden, Don W. Ricker 1987-9-2 7 B Humboldt Carlotta, roadside on state Hwy 36 Comment
  HSC49092  Solidago spathulata Patricia Shesgreen 1978-8-12 137 Humboldt Along Hwy. 255, 1/4 mi. S of Samoa Bridge, Samoa Comment
  UC1409170  Solidago spathulata Robert F. Thorne and P. Everett 1965-8-5 35164 Humboldt Samoa Dunes 3 Comment
  CAS-BOT-BC364968  Solidago velutina subsp. californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC127575  Soliva sessilis Harley P. Chandler May 1901 1166 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  HSC76207  Sorbus scopulina Overton, Butler 1979-8-2 12529 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC97446  Sparganium emersum Ivy Watson 2008-10-5 35 Humboldt Blue Lake; ~ 500 ft. upstream of the Hatchery Rd. bridge, north bank. 22 Comment
  UC198647  Sparganium emersum var. emersum Joseph P. Tracy 1917-5-30 4808 Humboldt near mouth of Little River; Northern Coast Ranges 6 Comment
  UCD92969  Spartina densiflora Keith B. Macdonald 1965-9-1 s.n. Humboldt Arcata, along Humboldt Bay. Comment
  HSC83043  Spartina densiflora A. L. Eicher 1985-6-19 Humboldt Bordering Humboldt Bay, adjacent to the mouth of Mad River Slough, on SW side 1 Comment
  HSC68008  Spergula arvensis J. P. Smith 1970-6-7 3805 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  CHSC14126  Spergula arvensis subsp. arvensis D. Joley 1967-8-16 49 Humboldt Found at a fish hatchery 4 mi n of Orick. Comment
  HSC89986  Spergularia canadensis var. occidentalis Leonel Arguello 1989-7-15 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  HSC4264  Spergularia macrotheca D. K. Smith 1968-11-9 54 Humboldt Along E edge of Humboldt Bay, 1 mi. S of Arcata Comment
  HSC37993  Spergularia rubra Peter Sorensen 1976-6-2 Humboldt Woodley Island, Humboldt Bay 1 Comment
  UC161002  Spergularia rubra Joseph P. Tracy 1906-6-17 2492 Humboldt Eureka Northern Coast Region (dry bed of Rick's Prairie pond) 0 Comment
  UC668080  Spergularia rubra Joseph P. Tracy 1936-6-3 14850 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC149615  Spiraea douglasii Henry M. Pollard 1947-8-19 s.n. Humboldt Klamath River nr. Redcap Creek, Orleans region Comment
  UC13088  Spiraea douglasii Harley P. Chandler May 1901 1197 Humboldt Humboldt Bay; North Coast Ranges 30 Comment
  UC1196405  Spiranthes porrifolia Joseph P. Tracy 1942-6-15 17154 Humboldt Garberville 152 Comment
  JEPS62959  Stachys ajugoides Joseph P. Tracy 1938-6-15 15931 Humboldt Fortuna 15 Comment
  RSA33441  Stachys ajugoides Carl B. Wolf 1937-6-18 8896 Humboldt 1/2 mile S of Fortuna. 15 Comment
  UC1541656  Stachys ajugoides var. ajugoides H. E. and S. T. Parks August 1943 24252 Humboldt Spruce Cove Trinidad 64 Comment
  UC1239728  Stachys ajugoides var. rigida Joseph P. Tracy 1913-6-20 4217 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC154007  Stachys ajugoides var. rigida Joseph P. Tracy 1908-6 2814 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC577315  Stachys ajugoides var. rigida Joseph P. Tracy 1937-6-26 15362 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCLA71166  Stachys ajugoides var. rigida C. Epling, Wm. Robison 1935-7-22 Humboldt Patrick's Point Comment
  UC1222860  Stachys ajugoides var. rigida Joseph P. Tracy 1950-6-8 18742 Humboldt near Petrolia (at crossing of river, hills between town and Ocean); Bear River 30 Comment
  UC1225845  Stachys ajugoides var. rigida Joseph P. Tracy 1942-7-1 17364 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  UC668219  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  UCLA71123  Stachys ajugoides var. rigida H. Lewis 1940-7-3 Humboldt Little River Beach State Park Comment
  UCLA71169  Stachys ajugoides var. rigida H. Lewis 1940-7-3 Humboldt Founders Tree Humboldt State Park Comment
  UC604663  Stachys chamissonis Joseph P. Tracy 1938-8-20 16124 Humboldt Alton 18 Comment
  UCD125774  Stachys chamissonis Linda M. Barker 1976-8-24 1683 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET10499253  Stachys chamissonis H. Lewis 1940-7-3 Lewis s.n. Humboldt Little river beach state park Comment
  JEPS120565  Stachys mexicana B. Castro and L. P. Janeway 2004-9-11 1475 Humboldt North Coast. Near blocked S end of Little River Road 0.25 mi N of Central Avenue; near S end of Clam Beach. Comment
  HSC47011  Stachys mexicana Sheila Logan 1978-4-10 179 Humboldt Redwood Park behind HSU campus, 1/4 mi. N of Bayside Rd. Comment
  HSC58204  Stachys rigida var. rigida Walter Overton 1979-8-1 12317 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  CAS-BOT-BC175344  Stellaria borealis subsp. sitchana Doris K. Kildale 1926-3-24 1684 Humboldt Ryan Slough near the Occidental Ranch Comment
  HSC99075  Stellaria nitens C. Witte 2007-5-10 16 Humboldt Along National Forest 1, near Kinsey Ridge. .2 miles south of intersection with 5N04. 1451 Comment
  BLMAR45  Stipa lemmonii Brad Barr June, 1982 45 Humboldt King range, Spanish Ridge, south facing slope Comment
  HSC97387  Stipa pulchra J. P. Tracy 1927-5-8 7963 Humboldt Phillipsville, facing S fork of Eel River 122 Comment
  HSC44061  Streptanthus breweri Thomas W. Nelson 1977-7-4 3587 Humboldt W side of road N of Alder Springs, head of N Fork of Conley Creek 1494 Comment
  UC184371  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1912-7-26 3843 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC32317  Streptanthus tortuosus var. tortuosus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5655 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC58025  Streptopus amplexifolius G. L. Clifton 1979-7-31 11833 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  POM87663  Streptopus amplexifolius Le Roy Abrams, Rimo C. Bacigalupi 8302 Humboldt Near county line Comment
  HSC73239  Symphoricarpos albus var. laevigatus M. A. Baker 1980-5-18 1320 Humboldt Near Black Mountain. 360 Comment
  UC179968  Symphoricarpos albus var. laevigatus Joseph P. Tracy 1914-6-14 4499 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC169063  Symphoricarpos mollis Mrs. M. H. Manning 1900-1 Humboldt Hupa Comment
  HSC75958  Symphyotrichum bracteolatum Overton, Butler 1979-7-24 9740 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 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
  UC1174865  Symphyotrichum chilense P. C. Everett and E. K. Balls 1959-10-25 23960 Humboldt 1/4 mi w of, on hwy 299 to Arcata Willow Creek 502 Comment
  UC1409110  Symphyotrichum subspicatum Robert F. Thorne and P. Everett 1965-8-9 35336 Humboldt 3 mi n, along Hwy. 101 Eureka 1 Comment
  HSC21156  Synthyris cordata D. E. Anderson 1962-3-4 1928 Humboldt About 2 mi. S of Trinidad Comment
  HSC89432  Synthyris reniformis P. A. Daly 1984-5-8 11 Humboldt Trinidad Head 61 Comment
  UC27647  Synthyris reniformis C. C. Marshall 1887-1-7 Humboldt hills near Mad River 609 Comment
  UC582541  Synthyris reniformis Joseph P. Tracy 1936-2-28 14771 Humboldt Trinidad, on coast Trinidad Comment
  CHSC1902  Synthyris reniformis var. cordata H. Mapes 1953-3-9 Humboldt Comment
  HSC6248  Tanacetum bipinnatum J. W. Johnson 1962-6-4 1405 Humboldt W end of Hollow 10, W.M Lanphere Farm, Samoa Peninsula Comment
  UC127603  Tanacetum camphoratum J. Burtt Davy 1899-6-30 6183 Humboldt near Ferndale (North Coast Ranges); North Coast Ranges Comment
  RSA89773  Tanacetum camphoratum P. A. Munz 1954-7-25 19869 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  RSA21021  Tanacetum vulgare C. B. Wolf 1937-9-12 9330 Humboldt Big Lagoon, S side along Redwood Hwy. 6 Comment
  SEINET11798896  Taraxacum laevigatum J. P. Tracy 1948-1 17973 Humboldt Trinity River at Willow Creek Comment
  HSC97580  Taraxacum officinale C. Witte 2007-5-18 37 Humboldt Along National Forest 1. Approximately 1 mile north of intersection with 5N09. 1456 Comment
  HSC45931  Taxus brevifolia Jerome Peterson 1978-4-29 9 Humboldt Along bank of Redcap Creek 1.0 mi. down Millgap Rd. from Redcap Rd. Comment
  HSC56241  Tellima grandiflora Walter Overton 1979-8-1 12338 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  JEPS49695  Tellima grandiflora Harley P. Chandler May 1901 1232 Humboldt Humboldt Bay; North Coast Range 121 Comment
  UC160904  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1908-6 2714 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC100463  Thelypodium lasiophyllum Carl C. Marshall 32 Humboldt No data. Comment
  UC1129923  Thermopsis gracilis A. E. Wieslander 1931-5-17 197 Humboldt Bald Hills Hoopa Quadrangle Comment
  UC1586873  Thlaspi montanum var. montanum Juha Pykala and D. H. Norris 1987-5-19 710 Humboldt Horse Mountain Road at intersection with ski-lift; Horse Mountain Road 1400 Comment
  UC673195  Thlaspi montanum var. montanum Lincoln Constance and Reed C. Rollins 1942-5-11 2877 Humboldt 5 mi s Hoopa; North Coast Ranges, Hoopa Valley 121 Comment
  CAS-BOT-BC81308  Thuja plicata Doris K. Kildale 1927-3-22 2935 Humboldt North Fork Elk River Comment
  RSA1090  Thuja plicata E. R. Johnson 1928-8-26 1149 Humboldt 7 miles east of Arcata Comment
  UCD67632  Thuja plicata D. Sanchez-Mata 1996-6-27 s.n. Humboldt Blue Lake. Mad River. Redwood forests on slopes. 175 Comment
  SBBG2855  Tiarella trifoliata var. unifoliata H. and M. Dearing 1939-5-15 3703 Humboldt E fork of Willow Crk 762 Comment
  CAS-BOT-BC436909  Tiarella trifoliata var. unifoliata L. B. Kildale 1930-9-9 10410 Humboldt Redwood Creek at Berry's 289 Comment
  UC1173638  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1930-7-17 8993 Humboldt McKay Camp South Fork Mountain Comment
  HSC73176  Tonella tenella M. A. Baker 1980-5-17 1249 Humboldt Near Le Perron Peak 1066 Comment
  UC169095  Tonella tenella Mrs. M. H. Manning Apr 1902 Humboldt Hupa Comment
  HSC21588  Torilis arvensis P. W. Shields May 1955 Humboldt HSC campus Comment
  UCR123960  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6986 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
  HSC93749  Torreyochloa pallida var. pauciflora Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-25 792 Humboldt Arcata, Alder Grove Pond 18 Comment
  RSA12424  Torreyochloa pallida var. pauciflora C. B. Wolf 1934-7-2 5870 Humboldt Small Lake at Snow Camp. (Mountains east of Korbel). 1372 Comment
  UC668182  Toxicodendron diversilobum Joseph P. Tracy 1937-5-30 15301 Humboldt 5 mi. n. Blocksburg (Larrabee Creek); Larrabee Creek 365 Comment
  CAS-BOT-BC323057  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  HSC6288  Tracyina rostrata J. P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek. 152 Comment
  SEINET3071157 Image available Tracyina rostrata J. P. Tracy 1916-6-20 4735 Humboldt Alder Point Comment
  UC1618532  Tracyina rostrata Robert Ornduff June 1997 10106 Humboldt Northeast of Alderpoint, easterly from Alderpoint-Blocksburg Road ca. 1 km (0.6 mi) on unpaved Stewart Ranch Road Comment
Read comments
Apr 28 2007
  CHSC32806  Tragopogon porrifolius Lora L. Anderson 1981-4-26 5 Humboldt Ca. 0.5 mi w of Mad River, 200 yds n of 200/299 separation bridge, 8 mi ne of Arcata. Along roadside. 30 Comment
  HSC98856  Triantha occidentalis subsp. occidentalis Cara Witte 2008-7-30 973 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  HSC44328  Trichostema laxum Thomas W. Nelson, Jane P. Nelson 1977-8-6 3700 Humboldt Above Alder Spring 1616 Comment
  UC162685  Trichostema laxum Joseph P. Tracy 1911-7-10 3492 Humboldt Valley of Trinity River at mouth of Willow Creek Northern Coast Ranges 152 Comment
  POM162077  Trichostema oblongum Joseph P. Tracy 1921-8-21 5936 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  CHSC31274  Trientalis latifolia Mark Stopher 1980-5-20 70 Humboldt In dense forest along the Van Duzen River near Rte 36. Comment
  SEINET8729732 Image available Trientalis latifolia H. E. Parks, S. T. Parks 1952-1 7548 A Humboldt Spruce Cove, Trinidad. 0 Comment
  UC180224  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1914-5-14 4452 Humboldt Fort Seward 121 Comment
  UC495670  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1932-5-1 9894 A Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  JEPS65948  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1927-5-14 8007 Humboldt near South Fork; North Coast Ranges, Trinity River Valley 182 Comment
  BLMAR385  Trifolium angustifolium Jennifer Anthony-Wheeler 2004-6-28 385 Humboldt King range, Mouth of Mattole River, along road in willow thickets 36 Comment
  UC165525  Trifolium barbigerum Harley P. Chandler May, 1901 1129 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC1197057  Trifolium bifidum var. decipiens J. P. Tracy 1900-6-5 846 Humboldt immediate vicinity Eureka 0 Comment
  UC495643  Trifolium bifidum var. decipiens Joseph P. Tracy 1927-6-18 8186 Humboldt betw Petrolia and the ocean (hills); Northern Coast Ranges 152 Comment
  SEINET12157175  Trifolium cyathiferum J. P. Tracy 1937-1 15519 Humboldt Devils Hole, head of Hors Linto Creek, Trinity Summit 1676 Comment
  UC1542872  Trifolium dubium Harold E. Parks May 1934 4324 Humboldt Spruce Cove Trinidad Comment
  UC631194  Trifolium dubium Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  HSC45122  Trifolium dubium R. Sutherland 1978-5-12 1 .12578 Humboldt Mckee Flat 288 Comment
  UC1223462  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1933-7-9 12647 Humboldt Brannan Mtn 1066 Comment
  HSC15123  Trifolium fucatum R. A. Rasp 1964-5-17 38 Humboldt 1 mi. S of Arcata beside Hwy. 101 Comment
  UC41600  Trifolium fucatum J. Burtt Davy 1899-6-19 5684 Humboldt Hoopa Mtn North Coast Ranges Comment
  RSA21656  Trifolium fucatum var. fucatum Carl B. Wolf 1937-6-14 8811 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC45170  Trifolium hirtum R. Sutherland 1978-5-16 9 .16578 Humboldt 402 Comment
  HSC40872  Trifolium longipes Thomas W. Nelson 1976-7-9 3011 Humboldt S of Mt. Lassic (Signal Peak) 1707 Comment
  UC1223333  Trifolium longipes var. oreganum Joseph P. Tracy 1950-7-1 18945 Humboldt near Clear Lake (where the Friday Ridge comes ot the top of Grouse Mtn Ridge); Grouse Mtn summit 1219 Comment
Read comments
Apr 3 2008
  UC1197233  Trifolium macraei Joseph P. Tracy 1923-5-19 6209 Humboldt near Trinidad; Northern Coast Ranges 15 Comment
  HSC40939  Trifolium microcephalum Linda M. Barker 1976-6-1 1558 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  UC495694  Trifolium microcephalum Joseph P. Tracy 1932-5-1 9869 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  HSC45143  Trifolium microcephalum R. Sutherland 1978-5-12 12 .12578 Humboldt 282 Comment
  HSC79459  Trifolium microcephalum Kenneth Clark 1980-4-18 591 Humboldt Shelter Cover, along access trail to Dead Man's Gulch 107 Comment
  HSC90753  Trifolium microdon Gail Newton 1982-5-5 2539 Humboldt Elk River Wildlife Area, Eureka. Comment
  CDA28005  Trifolium microdon E. C. Whitney 1978-5-25 Humboldt Art Tooby property, Harris. 0 Comment
  UC1197547  Trifolium microdon Joseph P. Tracy 1925-8-9 7225 Humboldt near Miranda (Salmon Creek); Northern Coast Ranges 91 Comment
  HSC38329  Trifolium repens Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  HSC71616  Trifolium repens J. P. Smith 1973-5-26 6822 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SEINET12156857  Trifolium variegatum L. K. Henry 1971-1 s.n. Humboldt along Rt 36, 2 mi E of Dinsmor in Six Rivers Nat'l Forest Comment
  UC169345  Trifolium variegatum var. melananthum Joseph P. Tracy 1912-6-30 3714 Humboldt Eureka Northern Coast Region 0 Comment
  UC1223528  Trifolium variegatum var. variegatum Joseph P. Tracy 1937-7-19 15460 Humboldt lower foothills nw slope; Buck Mtn 914 Comment
  HSC15177  Trifolium willdenovii D. E. Anderson 1965-5-8 3643 Humboldt About 2 mi. N of Willow Creek on the road running along E side of Trinity River Comment
  UC495690  Trifolium willdenovii Joseph P. Tracy 1932-5-1 9866 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  HSC45126  Trifolium willdenovii R. Sutherland 1978-5-19 7 .19578 Humboldt 131 Comment
  JEPS4152  Trifolium willdenovii Joseph P. Tracy 1932-5-10 9944 Humboldt between Petrolia and the ocean Northern Coast Ranges 152 Comment
  UC33316  Trifolium willdenovii Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5684 1/2 Humboldt Hoopa Mtn Comment
  JEPS37725  Trifolium wormskioldii Joseph P. Tracy 1917-5-30 4801 Humboldt Northern Coast Ranges, Little River Beach Little River Beach; Northern Coast Ranges, Little River Beach 6 Comment
  RSA518825  Trifolium wormskioldii Joseph P. Tracy 1923-6-17 6274 Humboldt Big Lagoon 6 Comment
  RSA639406  Trifolium wormskioldii Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-7 35225 b Humboldt Samoa Peninsula. 3 Comment
  UC1130173  Trifolium wormskioldii H. S. Yates 1936-6-18 5723 Humboldt 2 mi s of mouth of Littler River Eureka quad 3 Comment
  UC1409179  Triglochin maritima Robert F. Thorne and P. Everett 1965-8-7 35214 Humboldt Samoa Penisula 0 Comment
  UC176697  Trillium albidum Joseph P. Tracy 1913-6-25 4333 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen R. 762 Comment
  CAS-BOT-BC133391  Trillium ovatum Alice Eastwood; John Thomas Howell 1934-4-11 1330 Humboldt Patrick's Point Comment
  CAS-BOT-BC133396  Trillium ovatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UC1134682  Trillium ovatum R. Stahelin 1933-5-18 LH 12 Humboldt Arcata City Park Eureka Quad., Arcata City Park Comment
  SEINET12048689  Trillium ovatum F. H. Utech, Walter, W.; Knight, I. 1984-1 84 -176 Humboldt ca 0.4 mi S towards Redcrest on Avenue of Giants from junction with US 101 15 Comment
  UC175281  Trillium ovatum Joseph P. Tracy 1913-6-26 4350 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen R., Dinsmore's Ra 762 Comment
  UC169336  Triodanis perfoliata Joseph P. Tracy 1905-6-25 2197 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  UC1334891  Triphysaria eriantha subsp. eriantha L. D. Thurman 1965-4-8 626 Humboldt 4.4 mi s Samoa; s of Samoa Comment
  CHSC70841  Triphysaria eriantha subsp. rosea Vernon Oswald 1998-4-16 8916 Humboldt Samoa Boat Ramp County Park on the North Spit of Humboldt Bay. Growing along New Navy Base Rd. fronting the park. 6 Comment
  HSC40318  Trisetum cernuum Thomas W. Nelson, James Nelson 1976-7-28 3074 Humboldt Along small creek on the E side of old trail from lookout to Blocksburg. 1555 Comment
  HSC44764  Triteleia hyacinthina Maralyn O'Meara 1972-6-8 90 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  UC1197713  Triteleia hyacinthina Joseph P. Tracy 1925-5-30 7047 Humboldt McClellan Mountain Northern Coast Ranges, McClellan Mountain 822 Comment
  JEPS58060  Triteleia laxa W. L. Jepson 1921-8-11 9412 a Humboldt Big Lagoon, Humboldt coast Big Lagoon Comment
  RSA254788  Triteleia laxa Thomas W. Nelson, James Nelson 1973-5-28 952 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC535772  Triteleia laxa Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  HSC35868  Triteleia laxa Thomas W. Nelson, James Nelson 1975-8-5 2126 Humboldt Beside rd. to Table Bluff 1.0 mi. W of Copenhagen Rd. Comment
  HSC13437  Triticum aestivum D. J. McVean 1965-5-16 58 Humboldt Arcata, Game Pens at H.S.U. Comment
  SD56793  Tsuga heterophylla Darley F. Howe 1963-7-7 Humboldt 5 miles north of Orick on Highway #101 Comment
  HSC46102  Umbellularia californica J. P. Smith, J. O. Sawyer 1975-4-6 8058 Humboldt N of Briceland on rd. to Hwy. 101 Comment
  HSC60132  Umbellularia californica M. A. Baker 1977-6-6 384 Humboldt Hoopa Comment
  CAS-BOT-BC403929  Urtica dioica subsp. gracilis Dennis W. Woodland 1970-8-12 1614 Humboldt 1 mile S. of Redwood River and Orick along U.S. 101 in ditch on west side of road Comment
  HSC62985  Utricularia macrorhiza David Wheeler 1979-4-21 75 Humboldt Fieldbrook Elementary School, pond to the W of the baseball fields. Comment
  UC1197773  Vaccinium cespitosum J. P. Tracy 1901-4-7 1007 Humboldt immediate vicinity Eureka 0 Comment
  UC1197784  Vaccinium membranaceum Joseph P. Tracy 1934-8-29 13625 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC7903  Vaccinium ovatum D. B. Bader 1963-2-17 26 Humboldt Second of the Clam Beach lagoons W of Hwy. 101 Comment
  HSC79432  Vaccinium ovatum Kenneth Clark 1981-4-5 1301 Humboldt Above S fork Dead Man's Gulch 114 Comment
  HSC90226  Vaccinium ovatum L. Watson, J. Meninga Mar 1991 20 Humboldt Near Manilla, Mad River Slough and Dunes N of parking lot, W of trail Comment
  POM118414  Vaccinium ovatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  UC1197779  Vaccinium ovatum Joseph P. Tracy 1922-5-21 6052 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  UC154182  Vaccinium ovatum Harley P. Chandler Jun 1901 1397 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Valley 152 Comment
  UC412665  Vaccinium ovatum Harley P. Chandler May 1901 1167 Humboldt Eureka North Coast Ranges 30 Comment
  UC902048  Vaccinium ovatum Joseph P. Tracy 1948-10-24 18257 Humboldt near Fruitland 304 Comment
  CAS-BOT-BC199409  Vaccinium parvifolium C. H. M. 1920-8-29 s.n. Humboldt Lower Eel River, near Pepperwood Comment
  CHSC609  Vaccinium parvifolium V. Holt 1933-4-10 Humboldt Comment
  HSC72827  Vaccinium parvifolium Gail Newton 1980-6-16 196 Humboldt Near Onion Mtn. 1280 Comment
  POM131975  Vaccinium parvifolium Joseph P. Tracy 1918-4-21 4879 Humboldt Near Newells old camp, Kneeland Prairie Road. Comment
  UC673215  Valeriana sitchensis subsp. scouleri Lincoln Constance, Reed C. Rollins 1942-5-11 2867 Humboldt 3 mi w of East Fork of Willow Creek; North Coast Ranges Comment
  JEPS9386  Valeriana sitchensis subsp. scouleri Ethel Tracy 1917-6-12 Humboldt along Eel River from South Fork to Scotia (Scotia Bluff); Northern Coast Ranges, Eel River 60 Comment
  UC416771  Valeriana sitchensis subsp. sitchensis Mrs. M. H. Manning 1901-7-1 117 Humboldt Trinity Summit Comment
  HSC3383  Vancouveria hexandra Frances Oldridge 1946-1 Humboldt Eureka Comment
  HSC71796  Vancouveria hexandra Gail Newton 1980-6-16 171 Humboldt Near Monks Camp. 1097 Comment
  POM118508  Vancouveria hexandra Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UCSB15917  Vancouveria hexandra 1962-6-8 Humboldt Along U.S. Highway 101, 8 miles north of Orick 60 Comment
  CAS-BOT-BC76096  Vancouveria planipetala Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta. Comment
  HSC76284  Vancouveria planipetala Teresa Prendusi 1981-7-9 189 Humboldt Near Cedar Camp. 1268 Comment
  UC1196348  Vancouveria planipetala Joseph P. Tracy 1919-5-30 5171 Humboldt near Willow Creek (hill slopes at West Side of Trinity River); Northern Coast Ranges, w side of Trinity River, Willow Creek 152 Comment
  CAS-BOT-BC135775  Veratrum insolitum Carl B. Wolf 1934-7-3 5920 Humboldt 19 1/2 mi. from Martin's Ferry on Orick Rd. 304 Comment
  RSA20851  Veronica americana Carl B. Wolf 1937-6-18 8891 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  HSC92212  Veronica anagallis-aquatica D. E. Anderson, Thomas W. Nelson 1972-5-9 Humboldt Just W of Weitchpec on the road to Pecwan Comment
  UC1198066  Veronica arvensis J. P. Tracy 1910-5-1 3131 Humboldt immediate vicinity of Eureka 0 Comment
  UC1198060  Veronica persica Joseph P. Tracy 1938-6-12 15894 Humboldt opposite mouth of Van Duzen (Eel River, Alton to Fortuna); Eel River 15 Comment
  HSC21220  Veronica serpyllifolia William J. Ferlatte 1963-5-8 38 Humboldt N end of Redwood Bowl, HSC campus, Arcata Comment
  POM283766  Veronica serpyllifolia var. humifusa Lyman D. Benson 1929-7-14 1799 Humboldt Weott Ranger Station, South Fork Eel River. Comment
  HSC99734  Vicia americana Jimerson, J. Pageau 1979-5-24 471 Humboldt Near Orleans 226 Comment
  HSC74383  Vicia americana var. americana M. A. Baker 1980-6-28 2474 Humboldt Near Mad River Buttes 1445 Comment
  UC1197463  Vicia americana var. americana J. P. Tracy 1901-5-30 1111 Humboldt immediate vicinity Eureka 0 Comment
  HSC89513  Vicia gigantea M. Roantree 1985-4-25 7 Humboldt E side of Trinidad Head Comment
  RSA138213  Vicia gigantea Volney Rattan 1880-1 s.n. Humboldt Mad River Comment
  UC1222589  Vicia hirsuta Joseph P. Tracy 1943-7-1 17428 Humboldt Eureka; 7th and I Streets, vacant lot Comment
  UC495714  Vicia hirsuta H. E. Parks and Joseph P. Tracy 1931-5-23 9452 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  RSA170257  Vicia hirsuta Joseph P. Tracy 1916-5-31 4689 Humboldt Stitz Creek. Along Eel River South Fork to Scotia. 61 Comment
  HSC48377  Vicia sativa subsp. nigra Mark Flippo 1978-4-18 40 Humboldt Mckinleyville, Hill Top Rd. Comment
  HSC89710  Vicia sativa subsp. sativa Eric German, Klara Varga, Michele Cardinaux 1989-4-28 43 Humboldt Hwy. 299 near Korbel, 7.5 mi. E of Hwy. 101/299 intersection 122 Comment
  HSC89999  Vicia villosa subsp. villosa Leonel Arguello 1989-6-24 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, end of the Fernstrom-Root trail Comment
  HSC3233  Vinca major S. R. Johnson 1965-3-23 16 Humboldt 1 mi. N of Luffenholtz Beach Comment
  CAS-BOT-BC263952  Viola adunca L. B. Kildale 1926-3-30 1537 Humboldt Big Lagoon Comment
  CAS-BOT-BC263954  Viola adunca W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula Comment
  SEINET200800 Image available Viola bakeri J. P. Tracy 1932-7-15 10596 Humboldt Trinity Summit Klamath Mts. Open ground near melting snow. 1829 Comment
  HSC38515  Viola cuneata D. E. Anderson, J. P. Smith 1971-6-18 - 1085 Humboldt Horse Mtn. Comment
  RSA120706  Viola cuneata S. S. Tillett 1956-7-6 611 Humboldt South slope along Bar Shanty Road, 5 miles from Orleans. 488 Comment
  HSC21785  Viola glabella Frances Oldridge 1946-1 Humboldt Eureka Comment
  JEPS50362  Viola glabella W. L. Jepson 1932-7-24 16376 Humboldt Camp Grant; Eel River, Camp Grant Comment
  JEPS80008  Viola lobata subsp. integrifolia Joseph P. Tracy 1937-7-2 15408 Humboldt head of Little Hors-Linto Creek (Trinity Summit); , Little Hors-Linto Creek 1371 Comment
  HSC71027  Viola ocellata Thomas W. Nelson 1977-4-20 3319 Humboldt Along FS 1N15 between Hwy. 36 and summit 915 Comment
  SEINET11993509  Viola ocellata F. H. Utech 1986-1 86 -388 Humboldt ca 5 mi N on Kings Peak Rd, from junction with Shelter Cove Rd, near Tolkan Recreation Area 480 Comment
  JEPS50263  Viola palustris Joseph P. Tracy 1923-5-31 6242 Humboldt Northern Coast Ranges, Eurkea Eurkea; Northern Coast Ranges, Eurkea 0 Comment
  UC1121616  Viola praemorsa subsp. praemorsa R. Stahelin 1933-5-17 Humboldt Kneeland Prairie Comment
  UC1222514  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1950-4-20 18607 Humboldt opposite Buck Mountain (Along Van Duzen River, Dinsmore's); Dinsmore's, Van Duzen River 762 Comment
  HSC84493  Viola praemorsa subsp. praemorsa R. Earing, C. Cavanaugh, C. Collins 1987-4-24 95 Humboldt 24 mi. E of Blue Lake on Titlow Hill Rd., ca. 1/2 mi. from Hwy. 299 854 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
  RSA79371  Viola praemorsa subsp. praemorsa E. K. Balls, Lee W. Lenz 1952-5-12 17198 Humboldt 0.6 mi E of Dinsmore along Hwy 36 from Alton to Red Bluff. Comment
  SEINET10404787  Viola sarmentosa Unknown 1967-6-16 67 -12 Humboldt of Orick; James Irvine redwood grove, U.S. 101 Comment
  SEINET200802  Viola sempervirens J. P. Tracy 1904-4-3 2006 Humboldt Eureka 0 Comment
  SEINET11994159  Viola sempervirens N. H. Russell 1967-1 67 -12 Humboldt James Irvine grove of redwoods, US 101, N of Orick Comment
  UC502968  Viola sempervirens Joseph P. Tracy 1927-5-15 8063 Humboldt near summit Hoopa Mountain (on road w from Hoopa to Bair's); Northern Coast Ranges, Hoopa Mountain 1066 Comment
  UC1762512  Viola sheltonii Milo S. Baker 11510 Humboldt South Fork Mountains Comment
  UCD16884  Vitis californica H. Olmo 1934-9-30 s.n. Humboldt California. Humboldt County: on highway near Blue Lake. Comment
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Jun 14 2012
  HSC90693  Vulpia bromoides Gail Newton 1982-5-5 3559 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC9905  Vulpia microstachys D. E. Anderson 1965-5-8 3648 Humboldt About 3 mi. N of Willow Creek along rd. on E side of Trinity River. Comment
  UC212887  Vulpia microstachys var. pauciflora Joseph P. Tracy 1919-5-31 5161 1/2 Humboldt near Willow Creek (hillslopes at w side of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  HSC73252  Vulpia myuros M. A. Baker 1980-5-18 1319 Humboldt Near Black Mtn. 1006 Comment
  UCD94718  Vulpia myuros A. A. Beetle; G. L. Stebbins Jr. 1942-6-1 3456 Humboldt 2 miles north of Orleans. Klamath River. Comment
  CAS-BOT-BC184731  Vulpia myuros subsp. megalura Joseph P. Tracy 1933-6-13 12598 Humboldt Hoopa Mountain. Near summit on road from Hoopa westward to Bair's 1066 Comment
  CAS-BOT-BC185939  Vulpia octoflora var. octoflora Joseph P. Tracy 1929-7-4 8618 Humboldt French Camp Ridge 1066 Comment
  CHSC63409  Whipplea modesta Vernon H. Oswald 1994-6-29 6365 Humboldt Friday Ridge Rd. (Forest Rd. 6N08) 7.3 mi N of Titlow Hill Rd., 0.8 mi S of Brush Mtn. Lookout Rd., S of Hwy. 299 and Willow Creek. Common groundcover on shaded forest edge. 975 Comment
  HSC20441  Whipplea modesta D. E. Anderson 1962-5-1 2197 Humboldt 2 mi. W of Hoopa Comment
  HSC20447  Whipplea modesta J. W. Johnson 1962-4-22 1280 Humboldt Willow Creek along the Hwy. on the canyon slope W of town Comment
  SDSU911  Whipplea modesta D. F. Howe 1961-8-2 3121 Humboldt 7.7 Miles east of Orick on Bald Mtn. Road. 610 Comment
  HSC58195  Wyethia angustifolia G. L. Clifton, Griswold 1979-8-2 12294 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA787174  Wyethia angustifolia C. B. Wolf 1927-8-29 1200 Humboldt 7 miles south of Ferndale and Capetown, Bear River Ridge, Mt. Glen. Comment
  UC604675  Wyethia longicaulis Joseph P. Tracy 1938-7-7 16041 Humboldt Grouse Mountain 1524 Comment
  HSC33411  Xerophyllum tenax Thomas W. Nelson 1974-5-30 1351 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  HSC79498  Zeltnera muehlenbergii Kenneth Clark 1979-7-1 454 Humboldt Shelter Cove, Dead Man's Gulch 9 Comment
  RSA183643  Zigadenus micranthus D. E. Anderson 1965-6-1 3779 Humboldt Near Brush Mountain lookout 1216 Comment
  UC249566  Zigadenus micranthus var. micranthus Joseph P. Tracy 1921-5-30 5484 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC398875  Zostera marina H. E. Parks 1923-11-12 Humboldt Eureka Comment



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