Search Results — 2000 specimen records retrieved (1342 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA46784  Abies Doris K. Kildale 1937-8-12 15241 Humboldt South Fork Mountain. Comment
  HSC54516  Abies concolor Overton, Butler 1979-7-23 9432 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  RSA54126  Abies concolor Henry M. Pollard 1944-09 s.n. Humboldt Near Orleans. Comment
Read comments
Oct 1 2019
  HSC40002  Abies grandis Linda M. Barker 1976-9-3 1688 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  CAS-BOT-BC73463  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Six Rivers National Forest - extension of known ridge, Horse Trail Ridge, southwest slope. 1828 Comment
  HSC70562  Abies procera M. A. Baker 1980-7-19 3042 Humboldt Near Bret Hole. 1814 Comment
  HSC73072  Abies procera Gail Newton 1980-7-24 1786 Humboldt Near Somes Mtn. 1615 Comment
  UC1229745  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Horse Trail Ridge Six Rivers National Forest, Horse Trail Ridge (sw slope) 1828 Comment
  CAS-BOT-BC383848  Abronia latifolia W. R. Dudley 1899-6-1 s.n. Humboldt Samoa Comment
  HSC41125  Abronia latifolia Thomas W. Nelson, Jane Nelson, James Nelson 1976-9-26 3266 Humboldt Along beach S of Fern Canyon. Comment
  UCD109784  Abronia latifolia Roman Gankin 1965-8-6 558 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC69787  Abronia latifolia R. Kalal 1979-5-27 35 Humboldt Along Samoa Blvd. 3 Comment
  SEINET5011048  Abronia latifolia Unknown 2002-8-19 83 Humboldt Sand beach N of rocky promontory and coast guard station. Comment
  UCD150384  Abronia umbellata var. breviflora William Anderson and H. Mc. 1964-8-6 s.n. Humboldt Little River. Comment
  CDA40639  Acaena novae-zelandiae G. S. Lester 1973-11-8 55 Humboldt Anchor Tree Farm, east of McKinleyville, near Fieldbrook. Comment
  CAS-BOT-BC330549  Acer circinatum Harley P. Chandler 1901-6-1 1283 Humboldt North Coast Ranges. Hupa Indian Reservation 1097 Comment
  HSC2783  Acer circinatum L. J. Coombes 1964-5-16 33 Humboldt Camp Bowers, 3 mi. SE of Blue Lake 1524 Comment
  HSC58344  Acer glabrum var. torreyi Overton, Butler 1979-8-2 12671 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC331588  Acer macrophyllum Doris K. Kildale; L. B. Kildale 1930-4-13 9575 Humboldt Bridgeville 289 Comment
  HSC98573  Acer macrophyllum C. Witte 2007-5-17 31 Humboldt National Forest Road 5N10. 1/2 mile east of intersection with National Forest 1. 1441 Comment
  UC1199012  Acer macrophyllum Joseph P. Tracy 1912-3-31 3569 Humboldt near mouth Lindsey Creek (Mad River); Northern Coast Ranges, Mad River 30 Comment
  UC165821  Acer macrophyllum J. P. Tracy 1906-4-15 2403 Humboldt moist bottom lands on Mad River near Blue Lake; on Mad River near Blue Lake 30 Comment
  UC179927  Acer macrophyllum Joseph P. Tracy 1914-7-7 4493 Humboldt in valley of North Fork of Elk River Northern Coast Region, Humboldt Bay, North Fork Elk River (region about Humboldt Bay) 0 Comment
  UCD117014  Acer macrophyllum David G. Forbes 1966-4-4 6438 Humboldt 0.5 mile south of Weott on Avenue of the Giants. 30 Comment
  SEINET8734158 Image available Achillea borealis subsp. californica H. E. Parks, S. T. Parks 1943-1 24246 Humboldt Egg Point, Trinidad 122 Comment
  HSC102524  Achillea millefolium M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1511 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC4569  Achillea millefolium Paul Shields 1955-6-12 Humboldt 6 miles west of Meyers Flat Comment
  HSC73474  Achillea millefolium Gail Newton 1980-7-11 1312 Humboldt Near Red Mtn. 1341 Comment
  HSC81935  Achlys triphylla Thomas W. Nelson, Jane Nelson 1979-7-3 4958 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  CAS-BOT-BC400025  Achlys triphylla Joseph P. Tracy 1933-5-21 12208 Humboldt North Coast Ranges. McClellan Mt. 670 Comment
  RSA12436  Achlys triphylla C. B. Wolf 1934-7-2 5857 Humboldt 2 miles from Bald Mt. on road to Korbel. 762 Comment
  SEINET12094127  Achlys triphylla F. H. Utech 1988-1 88 -275 Humboldt 14 mi W of Bridgeville on CA 36, Van Duzen County Park along Van Duzen River 50 Comment
  CAS-BOT-BC210651  Achnatherum lemmonii Joseph P. Tracy 1933-7-25 12849 Humboldt Grouse Mountain 1524 Comment
  UC1103141  Achnatherum lemmonii Joseph P. Tracy 1926-5-9 7463 Humboldt Valley of South Yager Creek 762 Comment
  CAS-BOT-BC216454  Achnatherum occidentale subsp. californicum H. E. Parks; Joseph P. Tracy 1934-6-27 11078 Humboldt Grouse Mountain 1432 Comment
  UC526760  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1932-7-12 10446 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC71443  Acmispon micranthus J. P. Smith 1971-10-9 5047 Humboldt Mad River above the Fish Hatchery. Comment
  HSC33760  Acmispon micranthus A. Montalvo 1975-5-24 276 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC45644  Acmispon micranthus Diane L. Reed 1978-5-7 53 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  UC668267  Aconitum columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  UC1222584  Aconitum columbianum Joseph P. Tracy 1950-7-31 19242 Humboldt n.e. side of top Grouse Mt. 1524 Comment
  CAS-BOT-BC391411  Aconitum columbianum subsp. columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  CHSC84729  Aconogonon phytolaccifolium L. P. Janeway 2003-7-26 7923 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5 km northeast of the top of Grouse Mountain. 1554 Comment
  CAS-BOT-BC391594  Actaea spicata var. arguta Carl B. Wolf 1937-8-11 9148 Humboldt North Coast Range, Van Duzen River, 2 7/10 mi. W. of Dinsmores 457 Comment
  HSC44137  Adenocaulon bicolor Thomas W. Nelson, Jane P. Nelson 1977-7-1 3564 Humboldt Along N side of ridge between Bear and Blanket Creeks 1494 Comment
  CAS-BOT-BC62293  Adiantum aleuticum Carl D. Duncan 1920-9-22 s.n. Humboldt Trinity River, Hoopa Valley Comment
  HSC97598  Adiantum aleuticum Steven Lee 2004-4-6 9 Humboldt N side of Jolly Giant Cr. Rd., Redwood Community Forest Comment
  RSA687745  Adiantum aleuticum Charlotte M. Hoak 1936-8-15 344 Humboldt Patricks Point Comment
  HSC97560  Adiantum aleuticum Cara Witte 2007-6-1 161 Humboldt Horse Mountain Botanical Area. Near mine area. Forest Service Road 6N38. 1298 Comment
  RSA137319  Adiantum jordanii I. L. Wiggins 1957-6-21 14137 Humboldt Margin of grassy slide area on east side of road, 1 mile south of Garberville Comment
  UC811115  Adiantum jordanii George Neville Jones 1936-3-22 8662 Humboldt s fork Eel River near Garberville Comment
  CAS-BOT-BC202607  Aesculus californica Doris K. Kildale 1927-5-15 3161 Humboldt Petrolia Comment
  HSC31797  Aesculus californica Steve Selva, Roger Jensen 1974-8-27 80 Humboldt W of Humboldt-Trinity co. line on Hwy. 299 Comment
  SEINET3823281 Image available Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville 305 Comment
  UC1222302  Aesculus californica Joseph P. Tracy 1950-6-18 18847 Humboldt Petrolia Comment
  CAS-BOT-BC30380  Ageratina occidentalis Doris K. Kildale 1926-8-29 2592 Humboldt Van Duzen River, near Strong's Station Comment
  RSA183633  Ageratina occidentalis D. E. Anderson 1965-9-5 4094 Humboldt Along Mad River, ca. 3 miles south of Blue Lake. Comment
  JEPS18702  Ageratina occidentalis Milo S. Baker 1923-7-21 447 Humboldt Bed of Van Duzen North Coast, Bed of Van Duzen Comment
  UCD128632  Agoseris apargioides Linda M. Barker 1976-7-5 1643 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  HSC74403  Agoseris grandiflora Gail Newton 1980-6-28 747 Humboldt Near Mad River Butte. 1536 Comment
  UC1222760  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1949-7-19 18392 Humboldt 1/4 mi se Clear Lake; Grouse Mountain 1524 Comment
  UC1199475  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1925-5-30 7021 D Humboldt on grassy slopes McClellan Mountain; Northern Coast Ranges 822 Comment
  UC1222763  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1942-6-15 17151 Humboldt .5 mi ne, on rd to Harris Garberville 304 Comment
  UC582743  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1927-5-14 3030 A Humboldt at Willow Creek; Trinity River Valley 152 Comment
  UC249843  Agoseris hirsuta Joseph P. Tracy 1923-6-20 6316 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  CAS-BOT-BC127521  Agrostis capillaris Stuart K. Harris 1959-7-10 19935 Humboldt Fortuna. Grounds Redwood Hospital. Comment
  CAS-BOT-BC127282  Agrostis exarata William Arents Silveus 1938-7-9 2983 Humboldt Dyerville. Comment
  HSC76568  Agrostis exarata Teresa Prendusi 1981-7-24 495 Humboldt Near Whiteys Peak 1585 Comment
  CAS-BOT-BC139495  Agrostis hallii Joseph P. Tracy 1929-7-4 8610 Humboldt Northern Coast Ranges. French Camp Ridge. 1066 Comment
  CHSC69848  Agrostis hallii Leonel Arguello 1989-8-20 Humboldt Collected at the Lanphere-Christensen Dunes Preserve 3 miles west of Arcata. Growing alongside North Dune Loop trail about 40 yards from the Salt Marsh trail. Comment
  SEINET10810391  Agrostis longiligula Joseph P. Tracy 1902-7-4 Tracy 1757 Humboldt 0 Comment
  RSA152296  Agrostis microphylla Joseph P. Tracy 1938-7-11 16050 Humboldt Near Samoa on Humboldt Bay Comment
  CAS-BOT-BC139130  Agrostis oregonensis Joseph P. Tracy 1924-7-4 6711 Humboldt Northern Coast Ranges. Snow Camp. 1371 Comment
  UC212862  Agrostis pallens Joseph P. Tracy 1919-9-18 5232 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  CHSC36406  Agrostis stolonifera Donald M. Burk 1981-7-25 54 Humboldt At junction of Rd. 5N10 and Rd. 5N10C. 1249 Comment
  UCD53537  Agrostis stolonifera R. Tofsrud 1948-9-1 s.n. Humboldt Salmon Creek Ranch, about 8 miles S. of Eureka. Comment
  RSA10023  Agrostis variabilis Joseph P. Tracy 1930-7-19 8948 Humboldt South Fork Mountain; along summit near Blake lookout. 1738 Comment
  BLMAR32  Aira caryophyllea Brad Barr June, 1982 32 Humboldt King range, Lake Ridge near pond Comment
  HSC73963  Aira caryophyllea Gail Newton 1980-6-7 127 Humboldt Near Brush Mountain 1128 Comment
  HSC8865  Aira caryophyllea A. H. Murphy 1951-5-15 Humboldt 1 mi. SE of Fruitland-Whitlow Rd. Jct. on Whitlow Rd. 305 Comment
  SEINET11683267  Aira caryophyllea K. S. Erdman 1970-1 4787 Humboldt Doleson hill Prairie, Bald Hills Rd, SE of Orick 853 Comment
  CAS-BOT-BC138326  Aira caryophyllea var. caryophyllea H. E. Parks; S. T. Parks 1936-6-1 5850 Humboldt Spruce Cove, Trinidad. Comment
  JEPS11947  Alisma plantago-aquatica Rimo Bacigalupi with C. L. Custer and G. T. Robbins 1954-8-10 4756 Humboldt 5.7 mi n Alder Point (pond along dirt road between Alder Point and Blocksburg) 243 Comment
  UC1198194  Allium amplectens Joseph P. Tracy 1930-6-21 8777 Humboldt Larrabee Valley 731 Comment
  UC249547  Allium amplectens Joseph P. Tracy 1921-6-12 5813 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  SEINET3153890  Allium campanulatum N. Dennis 1965-6-19 132 Humboldt about 1/4 mi S and 1 mi E of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 mi SE of Kneeland 792 Comment
  HSC67188  Allium falcifolium Thomas W. Nelson, James Nelson 1980-6-10 5424 Humboldt Along NE side of Red Mtn. 1433 Comment
  CAS-BOT-BC135845  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-27 5947 Humboldt Humboldt-Trinity County line. Along low ridge northeast of small vernal pond at north base of Red Lassic - Six Rivers National Forest 1676 Comment
  HSC66828  Allium hoffmanii M. A. Baker 1980-7-11 2791 Humboldt Near Red Mtn. 1341 Comment
  HSC71809  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5951 Humboldt Six Rivers National Forest, saddle between two peaks E of Mt. Lassic 1768 Comment
  CAS-BOT-BC476628  Allium unifolium D E Breedlove 1961-7-3 642 Humboldt In dense grove of Sequoia sempervirens, along Eel River. 7.4 miles north of Phillipsville 243 Comment
  POM170198  Allium unifolium Jos Burtt Davy 1899-6-11 5444 Humboldt Between Hubbard s Station and Elk Prairie. Comment
  HSC2988  Allium validum J. P. Tracy 1930-7-16 8922 Humboldt Near McKay Camp. 1677 Comment
  HSC97998  Allium validum Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  CAS-BOT-BC171313  Alnus incana subsp. tenuifolia Joseph P. Tracy 1927-8-22 8335 Humboldt Bald Mountain; In cold wet meadow near High Prairie 1066 Comment
  SBBG1284  Alnus incana subsp. tenuifolia H. and M. Dearing 1939-6-23 3691 Humboldt E fork of Willow Crk Comment
  SEINET5536121 Image available Alnus rhombifolia Joseph P. Tracy 1950-1 19375 Humboldt Klamath River near Slate Creek 122 Comment
  UC503085  Alnus rhombifolia Joseph P. Tracy 1931-10-11 9717 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC169530  Alnus rubra Doris K. Kildale 1926-3-20 1540 Humboldt Big Lagoon Comment
  HSC62778  Alnus rubra M. Dean Griswold Jr. 1979-5-30 89 Humboldt Along rd. up Jolly Giant Creek Comment
  POM257502  Alnus rubra H. E. Parks, S. Parks 1938-4-1 24126 Humboldt Spruce Cove, Trinidad. 61 Comment
  RSA46834  Alnus rubra Doris K. Kildale 1928-3-30 4368 Humboldt Big Lagoon. Comment
  UCD170775  Alnus rubra Gordon Leppig 1998-3-25 724 Humboldt McKinleyville, Central Ave. South-bound lane near 101 junction. 42 Comment
  HSC58068  Alnus viridis subsp. sinuata G. L. Clifton, Griswold 1979-8-1 11950 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  SEINET201016  Alnus viridis subsp. sinuata J. P. Tracy 1947-8-24 17913 Humboldt Trinity Summit near Box Camp 1524 Comment
  UC526745  Alopecurus geniculatus Joseph P. Tracy 1926-6-12 7589 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  UC677555  Alopecurus saccatus A. A. Beetle with Stebbins and Tracy May 1942 3464 Humboldt 1 mi. e. Alton Comment
  CAS-BOT-BC13701  Ambrosia chamissonis Ira L. Wiggins 1930-7-7 4673 Humboldt Near Samoa Comment
  HSC38343  Ambrosia chamissonis Peter Sorensen 1976-7-14 Humboldt Woodley Island Comment
  JEPS40954  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13688 Humboldt along coast in front of s end of Stone Lagoon; Dry Lagoon, Stone Lagoon 3 Comment
  CAS-BOT-BC142883  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1926-9-5 2629 Humboldt Lasseck's Peaks between Corral Camp & Red Peak 1676 Comment
  CAS-BOT-BC142891  Amelanchier alnifolia var. semiintegrifolia J. P. Tracy 1909-5-2 2953 Humboldt Near Eureka 152 Comment
  CHSC68510  Ammophila arenaria Vernon H. Oswald 1997-4-10 8317 Humboldt Clam Beach between Arcata and Trinidad. 30 Comment
  HSC8846  Ammophila arenaria D. J. Wilder 1965-4-26 16 Humboldt Mouth of Mad River Comment
  SEINET3917968  Ammophila arenaria J. P. Smith, Thomas W. Nelson 1977-6-30 9201 Humboldt Samoa Peninsula just east of the drag strip.; 0 Comment
  HSC17823  Anagallis arvensis J. F. Knezevich 1968-5-14 434 Humboldt 13 mi. S of Ferndale at Cape Mendocino 0 Comment
  UC582520  Anaphalis margaritacea Joseph P. Tracy 1934-8-31 13649 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC45143  Anaphalis margaritacea Bennett; Dunn; Dziekanowski 1976-8-6 478 Humboldt By Hwy 101, N side of Orick 30 Comment
  SD42332  Anaphalis margaritacea Carl B. Wolf 1937-8-13 2910 Humboldt North Coast Range, 9 miles northeast of Blue Lake on Lord Ellis Road. 245 Comment
  SEINET10904828  Anaphalis margaritacea Mary Susan Taylor 1977-8-2 Taylor 1427 Humboldt In mountains above and east of Eureka. Comment
  CAS-BOT-BC391785  Anemone deltoidea Mrs. H. C. Cantelow 1936-5-17 s.n. Humboldt 4 1/2 miles east of Orick Comment
  UC1196197  Anemone deltoidea Joseph P. Tracy 1935-7-28 14309 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  UC160913  Anemone deltoidea J. P. Tracy 1906-5-20 2467 Humboldt vicinity of Eureka (near Cutten and MacDonald Tract) 0 Comment
  CHSC31275  Anemone oregana Mark Stopher 1980-5-20 71 Humboldt Along the Van Duzen River near Rte 36. Comment
  HSC99355  Anemone oregana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-21 4 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC41238  Anemone oregana var. oregana Brad Klipfel 1974-5-27 376 Humboldt Horse Mountain Comment
  UC562610  Angelica arguta Joseph P. Tracy 1932-7-12 10443 Humboldt Trinity Summit, at Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  JEPS14204  Angelica genuflexa Joseph P. Tracy 1937-9-30 15690 Humboldt Dow's Prairie 60 Comment
  CHSC31297  Angelica hendersonii Mark Stopher 1980-7-2 122 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  HSC71406  Angelica hendersonii J. M. DiTomaso 1980-8-1 1818 Humboldt Table Bluff, S of Eureka 9 Comment
  UC1222615  Angelica hendersonii Joseph P. Tracy 1950-9-10 19352 Humboldt Bear River Ridge 609 Comment
Read comments
Oct 12 2007
  UC1197332  Angelica lucida Joseph P. Tracy 1941-8-3 16977 Humboldt at w foot of Table Bluff Table Bluff 6 Comment
  UC642265  Angelica tomentosa Joseph P. Tracy 1939-8-16 16410 Humboldt Horse Mountain 1432 Comment
  HSC67890  Anisocarpus madioides J. P. Smith 1973-5-26 6853 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC485304  Anisocarpus madioides J. P. Tracy 1903-5-24 1909 Humboldt Alder Point 304 Comment
  HSC58749  Antennaria argentea Overton, Butler 1979-7-24 9595 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  JEPS13329  Anthemis cotula Lincoln Constance 1934-5-27 694 Humboldt Dyerville Bridge (s end), bar of S Fk Eel River South Fork Eel River, Bull Creek Region 45 Comment
  HSC40404  Anthoxanthum occidentale Linda M. Barker 1976-4-13 1387 Humboldt 3 mi. W of Arcata Comment
  SACT000343  Anthoxanthum odoratum Malcolm Nobs, S. Smith 1949-8-3 Humboldt Salt marshes bordering Humboldt Bay, 2 miles north of Eureka Comment
  SEINET3918444  Anthoxanthum odoratum H. E. Parks, S. T. Parks 1952-1 24444 Humboldt Spruce Cove, Trinidad.; 0 61 Comment
  UC922011  Anthoxanthum odoratum Joseph P. Tracy 1942-6-2 17101 Humboldt 2 mi n of Bridgeville 609 Comment
  UC1012378  Antirrhinum vexillocalyculatum subsp. breweri Francis W. Pennell Jul 5 1940-Jul 6 1940 26077 Humboldt 2 to 3 mi s Miranda (Route 101, along Eel River); Eel River 91 Comment
  UC1198738  Aphanes occidentalis J. P. Tracy 1905-5-21 2184 Humboldt immediate vicinity Eureka 0 Comment
  SD51267  Apocynum androsaemifolium Darley F. Howe 1961-8-2 3117 Humboldt 23.5 miles east of Orick on Bald Mountain Road 915 Comment
  JEPS49816  Apocynum cannabinum Lincoln Constance 1934-6-11 848 Humboldt trail along e. bank of S. Fork of Eel N. Dyerville Flat; S. Fork Eel R., Bull Creek Region, N. Dyerville Flat Comment
  CAS-BOT-BC392160  Aquilegia formosa David D. Keck 1948-7-1 5974 Humboldt South side of Big Lagoon Comment
  HSC35591  Aquilegia formosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2002 Humboldt At French Camp, Bald Hills Comment
  HSC102930  Arabis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 929 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC90416  Arabis breweri var. breweri C. Wilson, P. Kittleson, M. Hardig 1992-3-17 36 Humboldt Titlow Hill Rd., 1.7 mi. S of intersection with Hwy. 299 1037 Comment
  HSC57418  Arabis divaricarpa var. interposita G. L. Clifton, Griswold 1979-7-26 10181 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC58087  Arabis divaricarpa var. interposita G. L. Clifton, Griswold 1979-8-1 11996 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC48750  Arabis holboellii var. retrofracta Brad Klipfel 1973-6-10 76 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57667  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-7-25 10851 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC76286  Aralia californica Teresa Prendusi 1981-7-23 364 Humboldt Near Black Mtn. 890 Comment
  CAS-BOT-BC128697  Arbutus menziesii Doris K. Kildale 1927-4-16 3019 Humboldt Between Island Mountain and Fort Seward Comment
  HSC98832  Arbutus menziesii Cara Witte 2008-9-13 1040 Humboldt Forest Service Road 4N38. 1/2 mile south of intersection to Tri Board Camp. 1506 Comment
  UC249508  Arbutus menziesii Joseph P. Tracy 1922-4-30 6004 Humboldt Trinity River Valley near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC71803  Arceuthobium campylopodum M. A. Baker 1980-6-26 2381 Humboldt Near Sims Creek 610 Comment
  UC1222872  Arctium minus Joseph P. Tracy 1950-9-2 19351 Humboldt at, 3 mi s of Field's Landing Beatrice Comment
  CAS-BOT-BC24094  Arctostaphylos canescens subsp. canescens Carl B. Wolf 1937-9-13 9335 Humboldt North Coast range Horse Mt. 1524 Comment
  CAS-BOT-BC23810  Arctostaphylos columbiana C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny Comment
  JEPS38964  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13139 Humboldt vicinity of Trinidad 60 Comment
  UC1225897  Arctostaphylos columbiana Joseph P. Tracy 1945-3-30 17496 Humboldt in area known as Rick's Prairie Eureka 45 Comment
  UCD50770  Arctostaphylos columbiana H. E. Parks 1931-3-25 0917 Humboldt Near Patrick's point. Comment
  SEINET11989091  Arctostaphylos columbiana R. Gankin, Hildreth, W. R. 1967-1 1167 Humboldt 20 road mi E of Hwy 101 on Bald Hills Rd (from Orick) Comment
  RSA13418  Arctostaphylos columbiana var. tracyi H. E. Parks 1931-3-25 917 Humboldt Near Patrick's point. Comment
  CAS-BOT-BC24776  Arctostaphylos glandulosa subsp. glandulosa Doris K. Kildale 1927-2-20 2956 Humboldt McDowell Buttes. 914 Comment
  HSC98571  Arctostaphylos glandulosa subsp. glandulosa Cara Witte 2008-8-5 987 Humboldt Buck Flat. 1/4 mile south of intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  UC1052839  Arctostaphylos glandulosa subsp. glandulosa W. L. Colwell 1955-6-7 26 Humboldt one half mi n Grasshopper Mountain lookout (three mi w of Weott); Quad. 29-B-3 914 Comment
  CAS-BOT-BC38830  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1934-7-1 13275 Humboldt Trinity river Valley at willow Creek 152 Comment
  RSA46696  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-6-25 3583 Humboldt Ettersburg Comment
  UC162734  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1911-7-8 3449 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC55024  Arctostaphylos nevadensis Overton, Butler 1979-7-31 11436 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC40027  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1935-6-23 13992 Humboldt French Camp Ridge 1066 Comment
  HSC40857  Arctostaphylos patula Thomas W. Nelson 1976-7-9 2990 Humboldt Ridge S of the E peak of the Lassic Peak (Signal peak) group. 1707 Comment
  HSC70475  Arctostaphylos patula Gail Newton 1980-7-15 1588 Humboldt Near Sims Mtn. 1311 Comment
  UC1196869  Arctostaphylos uva-ursi Joseph P. Tracy 1901-4-14 1031 Humboldt Ocean Beach North Coast Region, Humboldt Bay Comment
  UC1225931  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17498 Humboldt 1 block s Harris (at L St.); Eureka 45 Comment
  CDA6804  Arctotheca calendula J. M. DiTomaso 2000-8-14 s.n. Humboldt W of town of Ferndale, E of Centerville Beach, along Centerville Rd, at Pries Dairy, near Russ Creek Comment
  OBI75994  Aristida oligantha Joseph P. Tracy 1938-8-14 16110 Humboldt Trinity River Valley, at Willow Crk 152 Comment
  CAS-BOT-BC64580  Armeria maritima subsp. californica Joseph P. Tracy 1927-6-8 8115 Humboldt Trinidad. 60 Comment
  RSA245251  Armeria maritima subsp. californica David K. Smith 1968-10-11 6 Humboldt 3 mi S of Trinidad. Comment
  UC562472  Armeria maritima subsp. californica Joseph P. Tracy 1927-6-8 8115 Humboldt Trinidad; sandy slopes facing ocean 3 Comment
  HSC71797  Arnica cernua Gail Newton 1980-6-16 168 Humboldt Near Monks Camp. 1097 Comment
  HSC81874  Arnica cernua Barry Silver 1986-4-13 513 Humboldt Bair Road, 6.4 mi. WSW of Hoopa Comment
  HSC58540  Arnica discoidea Overton, Butler 1979-7-23 9505 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC4695  Arnica discoidea Lincoln Constance 1934-7-19 910 Humboldt Near the summit of Grasshopper Mtn.; south of Bull Creek Flat, south fork of the Eel River 915 Comment
  HSC8985  Arrhenatherum elatius True Hoyle 1967-7-24 29167 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass 1006 Comment
  SEINET200928  Arrhenatherum elatius J. P. Tracy 1919-8-28 5184 Humboldt Eureka 0 Comment
  HSC75260  Artemisia douglasiana J. O. Sawyer, M. A. Ericksen 1980-8-18 4054 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  HSC97439  Artemisia douglasiana Ivy Watson 2008-9-17 22 Humboldt Mad River Park on West End Rd. beside pumping station 12 Comment
  RSA167208  Artemisia douglasiana Joseph P. Tracy 1947-8-24 17892 Humboldt Trinity Summit- Meadow at Box Camp 1463 Comment
  CAS-BOT-BC90872  Artemisia pycnocephala Tom Craig 1941-6-29 s.n. Humboldt Samoa Comment
  HSC4741  Artemisia pycnocephala J. W. Johnson 1961-9-4 1098 Humboldt Christenson Farm, Samoa Peninsula, Arcata. Comment
  UC55947  Asarum caudatum J. P. Tracy 1900-5-22 794 Humboldt Immediate vicinity of Eureka Comment
  HSC26878  Asarum caudatum Clifton Raymond Chesbrough 1973-6-19 83 Humboldt .5 mi. S of Trinidad along the coast Comment
  HSC98661  Asarum caudatum Cara Witte 2008-8-5 982 Humboldt Clear Lake. At end of Forest Service Road 6N01B. 1533 Comment
  UC1173688  Asclepias cordifolia Joseph P. Tracy 1939-5-6 16277 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC98884  Asclepias speciosa Cara Witte 2007-7-3 406 Humboldt White Oak Opening. 1242 Comment
  UC1197605  Asclepias speciosa Joseph P. Tracy 1911-7-8 3472 Humboldt near mouth Willow Creek; Northern Coast Ranges, Valley of the Trinity River 152 Comment
  HSC54217  Aspidotis densa Griswold, Butler 1979-7-12 7281 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC44046  Aspidotis densa Thomas W. Nelson, Jane Nelson 1977-7-1 3547 Humboldt On Ridge N of Bear Cr. 100 m W of Rd. 1S07 1555 Comment
  RSA21097  Aspidotis densa C. B. Wolf 1937-6-14 8825 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  UC1795051  Aspidotis densa Ruth Kirkpatrick 2003-8-2 1177 Humboldt Kneeland Airport, E-facing slope to E of runway Comment
  UCD137278  Aspidotis densa Gordon Leppig 1998-7-1 861 Humboldt Ammon Ridge Rd., 1 k east of Titlow Hill Rd. 1432 Comment
  UCR48599  Aster chilensis R. D. Goeden, Don W. Ricker 1987-9-2 870902- 10 Humboldt Loleta, along Cannibal Road 8 Comment
  CHSC118641  Astragalus agnicidus Courtney Wilson; Matt Groberg, Bob Meinke 2011-6-23 Humboldt On Humboldt Redwood Company private land. From Larabee, continue east along Larabee Creek and then follow the Scott Creek tributary uphill to the appropriate elevation and plants occur approximately 150 m east of the creek. 658 Comment
  UC1199092  Astragalus pycnostachyus var. pycnostachyus Joseph P. Tracy 1930-7-21 8891 Humboldt 3 mi s of point Cape Mendocino (southwestern slopes, fronting the ocean); Northern Coast Ranges, s Cape Mendocino 3 Comment
  UC162811  Astragalus rattanii var. rattanii Joseph P. Tracy 1903-5-23 1903 Humboldt along sand bars of Eel River at Alder Point; Northern Coast Ranges, Eel River at Alder Point 91 Comment
  HSC14595  Astragalus umbraticus D. E. Anderson 1963-9-29 2851 Humboldt Fish Lake. Comment
  HSC58324  Asyneuma prenanthoides Overton, Butler 1979-8-2 12621 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UCD136291  Athyrium filix-femina W. L. Jepson 1932-8-8 16529 Humboldt Weott (hill above). Comment
  HSC91598  Athyrium filix-femina var. cyclosorum E. Mackey 1986-10-2 Humboldt Patrick's Point State Park by trail to Agate Beach Comment
  CAS-BOT-BC170275  Atriplex confertifolia Dr. A. Kellogg; W. G. W. Harford 1868-1-1 862 Humboldt Humboldt Comment
  HSC4345  Atriplex leucophylla Jerry Parker 1968-10-26 206 Humboldt Driftline 0.5 mi. S of Big Lagoon. Comment
  HSC4339  Atriplex prostrata Larry Berti 1968-10-26 Humboldt Big Lagoon County Park, SW corner Comment
  SEINET4175775  Avena barbata Joseph P. Tracy 1906-4-29 2426 Humboldt Edge of field near Bucksport Comment
  HSC60017  Azolla filiculoides M. A. Baker 1978-5-20 566 Humboldt W side of the Klamath River along Hwy. 96 Comment
  SEINET10938126  Baccharis Mary Susan Taylor 1990-8-22 Taylor 6075 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  HSC5123  Baccharis douglasii W. L. Jepson 1932-7-24 16391 Humboldt Tooey Ranch, Garberville Comment
  UC1119655  Baccharis glutinosa H. L. Person 1932-7-18 Humboldt Eureka Comment
  POM41974  Baccharis pilularis Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC1004331  Baccharis pilularis W. L. Colwell 1954-11-20 20 Humboldt 3 mi e of, along Eel River South Fork Quadrangle 29B4; Eel River 91 Comment
  HSC91925  Baccharis pilularis subsp. consanguinea E. Mackey 1986-10-7 Humboldt Patrick's Point State Park; near cliff edge at Palmer's Point Comment
  HSC26635  Balsamorhiza deltoidea Thomas W. Nelson 1971-5-31 457 Humboldt Adjacent to the Mad River N of Dinsmore Comment
  HSC89512  Barbarea verna M. Roantree 1985-4-25 8 Humboldt E side of Trinidad Head. Comment
  CAS-BOT-BC106355  Bellis perennis Doris K. Kildale 1926-3-20 1539 Humboldt Big Lagoon Comment
  HSC39790  Bellis perennis Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  JEPS84961  Bellis perennis Barbara Ertter with Thomas J. Delendick 1987-5-16 6917 Humboldt Hwy 299 roadside ca 8 mi e Arcata (9 1/2 mi w of Lord Ellis summit) 152 Comment
  CAS-BOT-BC48156  Bensoniella oregona Joseph P. Tracy 1923-6-24 6363 Humboldt Bald Mountain in cold wet meadow near high prairie 1066 Comment
  HSC73146  Berberis aquifolium var. aquifolium M. A. Baker 1980-5-18 1354 Humboldt Near Black Mtn. 792 Comment
  HSC48473  Berberis aquifolium var. repens J. P. Smith, J. O. Sawyer, Jane Cole 1978-5-21 9934 Humboldt Six Rivers Natl. Forest, along Ishi Pishi Rd., 1.5 mi. from the Ishi Pishi Bridge over the Klamath River 305 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
  RSA24106  Berberis pinnata C. B. Wolf 1941-3-2 9989 Humboldt N. Coast Range. Bull Creek-Petrolia Road. 1/4 mi. s. of Panther Gap. 549 Comment
  HSC35726  Blechnum spicant Thomas W. Nelson 1975-1-16 1747 Humboldt E of HSU campus Comment
  JEPS53081  Boechera retrofracta H. P. Chandler Jun 1901 1511 Humboldt Klamath River Comment
  JEPS109416  Boechera subpinnatifida D. W. Taylor 2004-6-24 19131 Humboldt Horse Mountain, along Titlow Hill Road, 0.4 miles N from junction with the road to the mountain summit. Comment
  RSA182046  Boisduvalia stricta Joseph P. Tracy 1916-6-19 4728 Humboldt Northern coast ranges: Forks of Dobbyn Creek 183 Comment
  HSC74350  Boschniakia strobilacea Gail Newton 1980-6-17 221 Humboldt Near Onion Mtn. 1341 Comment
  JEPS49658  Boykinia major Joseph P. Tracy Jul 16 1930-Jul 19 1930 8935 Humboldt McKay Camp South Fork Mountain (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC492218  Boykinia major Joseph P. Tracy Jul 16 1930-Jul 19 1930 8935 Humboldt South Fork Mountain Northern Coast Ranges, South Fork Mountain (in wet meadow at McKay Camp) 1676 Comment
  HSC25680  Boykinia occidentalis Tim Baroni 1971-8-1 150 Humboldt 8 mi. E of Petrolia on the Mattole River Comment
  CAS-BOT-BC420255  Boykinia occidentalis John Thomas Howell 1931-6-17 6722 Humboldt 18 miles n. of Arcata on Redwood Highway Comment
  RSA12452  Boykinia occidentalis Carl B. Wolf 1934-6-30 5841 Humboldt 4 miles from Shelter Cove on rd to Briceland. 152 Comment
  RSA466750  Boykinia occidentalis Thekla Mohr s.n. Humboldt Eel River. Humboldt and Mendocino Cos. Comment
  JEPS18641  Brickellia californica Joseph P. Tracy 1931-10-18 9736 Humboldt 2 to 5 mi e of the South Fork, along Eel River South Fork Eel River (Camp Grant); Eel River 45 Comment
  POM248380  Brickellia californica S. K. Harris, C. M. Wilder 1938-9-8 877 Humboldt Bars on Van Duzen River, below Blue Slide Comment
  HSC37928  Briza maxima Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  HSC45221  Briza maxima M. Alcasas 1978-5-28 110 Humboldt E end of Myrtle Ave., Eureka 8 Comment
  JEPS72933  Briza minor Lincoln Constance 1934-5-23 611 Humboldt se slope of mt. above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  SEINET12053182  Brodiaea coronaria L. K. Henry 1971-1 s.n. Humboldt along Rt. 36, 2 mi E of Dinsmore in Six River National Forest Comment
  HSC100549  Brodiaea laxa Carl C. Marshall Jun 1885 94 Humboldt Hills everywhere. Comment
  HSC3016  Brodiaea terrestris subsp. terrestris T. M. Mingo May 1965 Humboldt 100 ft. N of parking area at College Cove Comment
  HSC37548  Brodiaea terrestris subsp. terrestris J. D. Ackerman 1975-6-10 457 Humboldt 1 mi. N of Samoa bridge turnoff from Samoa Blvd., S of Manila Comment
  JEPS513  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1927-6-8 8111 Humboldt Trinidad 3 Comment
  CAS-BOT-BC484613  Brodiaea terrestris subsp. terrestris Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UC1152026  Bromus carinatus var. carinatus Joseph P. Tracy 1951-6-26 19569 Humboldt vicinity of Twin Lakes Comment
  UC249867  Bromus carinatus var. carinatus Joseph P. Tracy 1923-6-18 6282 Humboldt Northern Coast Ranges, Bear River Ridge Bear River Ridge; Northern Coast Ranges, Bear River Ridge 304 Comment
  CAS-BOT-BC155994  Bromus diandrus Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  UC1131154  Bromus diandrus H. S. Yates 1936-6-16 5662 Humboldt 1 mi sw of Samoa 6 Comment
  JEPS72930  Bromus hordeaceus Lincoln Constance 1934-5-26 673 Humboldt Bull Creek Region, South Fork Eel River, s end of Dyerville Bridge South Fork Eel River; Bull Creek Region, , Dyerville Bridge 45 Comment
  UC34065  Bromus hordeaceus J. P. Tracy 1901-6-16 1146 Humboldt immediate vicinity of Eureka 0 Comment
  HSC102947  Bromus hordeaceus J. P. Smith Jun 2009 12600 Humboldt Arcata. Lawn weed Comment
  CAS-BOT-BC162448  Bromus laevipes Henry M. Pollard 1946-8-10 s.n. Humboldt Roadside south of Klamath River and east of Perch Creek, Orleans Region. Comment
  UC204532  Bromus sterilis Joseph P. Tracy 1916-5-31 4698 Humboldt Northern Coast Ranges, along Eel River from South Fork to Scotia, Holmes Flat Holmes Flat; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  UC277174  Bromus sterilis Joseph P. Tracy 1921-5-30 5493 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC185518  Bromus vulgaris Henry M. Pollard 1948-7-22 s.n. Humboldt Perch Creek near Orleans. Comment
  SEINET11092946  Cakile edentula var. edentula Unknown 1940-10-3 16739 Humboldt CALIFORNIA PLANT -- HUMBOLDT COUNTY annual, formign bushy-branched plants 2 ft tall Common on ocean beach, just above high tide. SAND DUNES, NEAR SAMOA, ON HUMBOLDT BAY Altitude 10 feet. Comment
  HSC6607  Cakile maritima S. J. Hawks 1965-3-19 11 Humboldt 0.5 mi. W of Arcata Airport Comment
  SEINET200618 Image available Calamagrostis foliosa Joseph P. Tracy 1938-6-17 15967 B Humboldt Near Panther Gap on road between Mattole and Bull Creek. 823 Comment
  UCD56952  Calamagrostis foliosa A. H. Murphy 1951-5-18 38 Humboldt approx. 1.5 mi. south of Petrolia at bridge corssing, along Mattole River. Comment
  CAS-BOT-BC80386  Calocedrus decurrens Doris K. Kildale 1926-8-31 2606 Humboldt Mattole River Valley, Geo. H. Mineis Ranch Comment
  HSC1284  Calocedrus decurrens P. J. Zinke 1950-8-2 148 Humboldt Elk Ridge 7 mi. W of Miranda 640 Comment
  HSC58137  Calocedrus decurrens Gilbert Muth 1979-8-1 12145 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CHSC32848  Calochortus tolmiei Lora L. Anderson 1981-4-25 11 Humboldt Ca. 1.5 mi ne of Redwood Creek 4.5 mi n of 299w 18 mi ne of Arcata. 228 Comment
  UC175806  Calochortus tolmiei Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3621 Humboldt near Hydesville (between Alton and Burnells); Northern Coast Region 30 Comment
  CAS-BOT-BC494365  Calochortus tolmiei H. C. Cantelow 1941-4-26 3949 Humboldt Rd. to Cape Mendocimo 12 mi. S.W. of Ferndale. Comment
  HSC44357  Calochortus tolmiei Brad Klipfel 1974-5-27 399 Humboldt Horse Mtn., ridge top near forks in rd. Comment
  HSC89585  Calochortus tolmiei M. Roantree 1985-5-30 70 Humboldt W side of Trinidad Head on an outcropping W of trail Comment
  HSC99483  Caltha leptosepala K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 142 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  CDA10558  Calycadenia ciliosa E. C. Whitney 1960-9-1 Humboldt 1/2 mile north of Pearch Creek on State Highway 96. 0 Comment
  RSA47142  Calycadenia truncata subsp. scabrella Doris K. Kildale 1925-9-4 982 Humboldt Redwood Creek Comment
  HSC16567  Calypso bulbosa W. R. Rogers 1967-3-19 227 Humboldt Bar W Ranch, 1 mi. W of Bridgeville Comment
  HSC38744  Calypso bulbosa M. Mesler, K. Mesler, J. D. Ackerman 1976-4-25 752 Humboldt Hwy. 36, E of Bridgeville, near tip of ridge W of Dinsmore Comment
  HSC97493  Calypso bulbosa Cara Witte 2007-5-21 59 Humboldt Board Camp Mountain. Near intersection of Forest Service Road 4N38 and National Forest 1. 1410 Comment
  SEINET12074107  Calypso bulbosa H. P. Chandler 1901-1 Humboldt Comment
  UC1196474  Calypso bulbosa Joseph P. Tracy 1927-5-15 8062 Humboldt on road to Bair's from Hoopa (at head of Pine Creek, near summit of Hoopa Mountain); Hoopa Mountain, Pine Creek 1066 Comment
  UC1196479  Calypso bulbosa Joseph P. Tracy 1913-6-25 4342 Humboldt opposite Buck Mountain (in Valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  HSC102120  Calyptridium monospermum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1024 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC673024  Calyptridium umbellatum Joseph P. Tracy Jul 16 1930-Jul 19 1930 8946 Humboldt summit near Blake Lookout (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1706 Comment
  CDA39889  Calystegia silvatica subsp. disjuncta Thomas Nelson 1976-8-1 3166 Humboldt At the intersection of 11th and B Streets, Arcata. 0 Comment
  HSC46384  Calystegia silvatica subsp. disjuncta Catherine Chin 1978-8-19 107 Humboldt 11th and B St., Arcata Comment
  SEINET3992218  Camassia leichtlinii Unknown 1942-5-16 17331 Humboldt Redway (near Garberville) 152 Comment
  SEINET3992220  Camassia leichtlinii Unknown 1925-7-5 1 /2/7179 Humboldt Bald Mountain 1067 Comment
  HSC16448  Camissonia cheiranthifolia R. E. Hafenfeld 1965-5-9 26 Humboldt 1/2 mi. S of Squashan Creek near Gold Bluff Beach Rd. Comment
  UC1196941  Camissonia contorta Joseph P. Tracy 1901-4-14 1028 Humboldt Samoa Northern Coast Region, Humboldt Bay Comment
  UC144060  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. P. Tracy 1909-7-18 3017 Humboldt opp. Eureka (sand hills of ocean beach); Samoa Comment
  SEINET10462964  Campanula prenanthoides Newton 1981-8-6 Newton 2408 Humboldt Iaqua Buttes Quad, near Mad River, N slope, sedimentary soil. 1308 Comment
  UC168956  Campanula prenanthoides Joseph P. Tracy 1911-7-4 3286 Humboldt near Willow Creek (hill slopes at w side of river); Northern Coast Ranges, Trinity River 243 Comment
  SEINET10873252  Campanula prenanthoides Klipfel 1974-7-23 KLIPFEL 462 Humboldt Horse Mountain area, on south slope of ridge running to the east of the towers area. T6N R4E Sec. 35 Comment
  HSC56399  Campanula scouleri Griswold, Butler 1979-7-11 6978 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC63287  Campanula scouleri M. A. Baker 1979-6-29 956 Humboldt Hopkin's Creek. 760 Comment
  HSC72633  Campanula scouleri J. P. Smith 1977-7-3 9250 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  UC34826  Campanula scouleri Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  UC161552  Cardamine breweri Joseph P. Tracy 1905-4-16 2163 Humboldt region about Humboldt Bay (at Bucksport); Northern Coast Region, , Bucksport 0 Comment
  CAS-BOT-BC37432  Cardamine californica Victor Duran 1933-5-11 3405 Humboldt Van Duzen River near Bridgeville. Comment
  HSC30110  Cardamine californica J. D. Ackerman, A. M. Montalvo 1974-3-31 168 Humboldt 1.5 mi. E of 3 Corners, on Greenwood Heights Rd. toward Kneeland Comment
  HSC44272  Cardamine californica Barbara Kelly 1977-4-23 300 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  RSA0034557  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  UC1199198  Cardamine nuttallii Joseph P. Tracy 1935-7-28 14320 Humboldt head Devil's Hole; Trinity Summit, head of Devil's Hole 1828 Comment
  HSC26336  Cardamine oligosperma Thomas W. Nelson 1971-3-30 361 Humboldt Beside Williams Creek near Ferndale Comment
  CAS-BOT-BC38127  Cardamine pensylvanica Joseph P. Tracy 1937-7-2 15401 Humboldt Trinity Summit. Head of Little Hors-Linto Creek. 1371 Comment
  HSC90782  Cardionema ramosissimum Peter Sorensen 1976-6-14 Humboldt North Spit Comment
  CAS-BOT-BC281807  Carduus tenuiflorus Joseph P. Tracy 1936-6-28 15008 Humboldt Hungry Hollow on Bald Mt 762 Comment
  CAS-BOT-BC18270  Carex A. A. Heller 1923-7-10 13797 Humboldt Along the Eel River between Scotia and Pepperwood in the redwood belt. Comment
  UC197208  Carex abrupta Joseph P. Tracy 1913-6-13 4104 1/2 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CAS-BOT-BC17792  Carex amplifolia Doris Kildale 1931-6-6 10865 Humboldt Gans Prairie, Orick - Weitchpec road. Comment
  CAS-BOT-BC17981  Carex aquatilis Joseph Prince Tracy 1935-6-8 13948 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon). 3 Comment
  UC249738  Carex aquatilis var. dives Joseph P. Tracy 1923-6-24 8352 Humboldt Bald Mountain, meadow near High Prairie Northern Coast Ranges 1066 Comment
  CAS-BOT-BC18008  Carex arcta Joseph Prince Tracy 1934-7-13 13389 Humboldt Dow's Prairie. 60 Comment
  HSC104333  Carex arcta James Regan, Humboldt Redwood Co., LLC 2007-6-22 27 Humboldt Small pond near Fox Creek 61 Comment
  UC249760  Carex bolanderi Joseph P. Tracy 1923-6-20 6332 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  SEINET3900269  Carex breviligulata D. H. Norris 1971-7-17 19600 Humboldt Along Redwood House road about 3 miles west of intersection with Kneeland-Bridgeville road.; 0 Comment
  CAS-BOT-BC110194  Carex buxbaumii Joseph P. Tracy 1927-4-23 7916 Humboldt Big Lagoon. 30 Comment
  RSA246847  Carex buxbaumii Robert F. Thorne, Percy C. Everett 1965-8-9 35293 Humboldt Big Lagoon. 3 Comment
  UC562721  Carex concinnoides Joseph P. Tracy 1935-6-2 13922 Humboldt Big Lagoon 3 Comment
  HSC76382  Carex concinnoides L. P. Janeway 1982-6-8 2 Humboldt On ridge 1 mi. SE of Horse Mtn. along FS 6N36 1384 Comment
  HSC95435  Carex cusickii Gordon Leppig 2001-6-16 1569 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  CAS-BOT-BC34436  Carex deflexa var. boottii Joseph Prince Tracy 1939-5-14 16292 Humboldt Dinsmores. Along Van Duzen River. 731 Comment
  HSC103329  Carex densa Thomas W. Nelson, Jane Nelson 1982-7-11 7116 Humboldt Along road from Hindley's cabin on McKeown Ranch to Anderson's Ford at Mad River Comment
  UC50822  Carex deweyana subsp. leptopoda Joseph P. Tracy 1900-8-5 921 Humboldt in immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC20079  Carex echinata Joseph Prince Tracy 1933-7-25 12845 Humboldt Northern Coast Ranges. Grouse Mountain. 1524 Comment
  UC1103127  Carex echinata subsp. echinata Joseph P. Tracy 1923-6-24 6372 Humboldt in cold wet meadow near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  UC303017  Carex geyeri Joseph P. Tracy 1926-6-20 7639 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  JEPS79858  Carex gracilior Joseph P. Tracy 1925-7-5 7166 Humboldt High Prairie on Bald Mountain, Northern Coast Ranges High Prairie; Northern Coast Ranges, Bald Mt., High Prairie 1066 Comment
  UC562729  Carex gynodynama Joseph P. Tracy 1927-5-8 7969 Humboldt Northern Costa Ranges. Phillipsivelle, facing south Fork of Eel River. Comment
  UC50824  Carex hendersonii J. P. Tracy 1900-5-28 811 Humboldt immediate vicinity Eureka 0 Comment
  HSC102204  Carex hoodii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1119 Humboldt Patterson Meadows 1555 Comment
  UC115803  Carex hoodii Joseph P. Tracy 1939-7-9 16343 Humboldt Snow Camp 1402 Comment
  UC585636  Carex hoodii Joseph P. Tracy 1937-6-27 15377 Humboldt mountain slopes w mouth of South Fork of Trinity River; 4-mile Creek 670 Comment
  CHSC90285  Carex laeviculmis Thomas W. Nelson; Jane P. Nelson 1987-6-11 8579 A Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  UCR52391  Carex laeviculmis L. P. Janeway 1983-5-15 296 Humboldt North Coast, Riparian bend of Mad River on south side, near the Fish Hatchery Road & across from Blue Lake 24 Comment
  JEPS63584  Carex lenticularis var. limnophila W. L. Jepson 1921-8-7 9332 Humboldt Stone Lagoon Comment
  UC604160  Carex lenticularis var. limnophila David D. Keck 1938-8-5 4774 Humboldt Big Lagoon Comment
  HSC103142  Carex lenticularis var. lipocarpa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1068 Humboldt Patterson Meadows 1555 Comment
  HSC73725  Carex leporinella M. A. Baker 1980-7-22 3072 Humboldt Near Salmon Mtn. 1820 Comment
  UC562437  Carex luzulina var. ablata Joseph P. Tracy 1932-7-14 10560 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UCR138659  Carex lyngbyei Gordon Leppig 1996-5-17 333 Humboldt Arcata, Arcata Marsh and Wildlife Sanctuary. Butcher Slough, E side about 20 m north of Interpretive Center Parking lot, just west of Sout I St 1 Comment
  HSC102157  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1065 Humboldt Patterson Meadows 1555 Comment
  HSC102622  Carex microptera M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1609 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC43480  Carex multicostata Thomas W. Nelson, Jane P. Nelson 1977-9-3 3729 Humboldt Growing along creek drainage N end of pond above Alder Springs 1524 Comment
  HSC44074  Carex multicostata Thomas W. Nelson, Jane P. Nelson 1977-7-1 3581 Humboldt Along road, N from Alder Springs 1463 Comment
  CHSC40158  Carex nudata L. P. Janeway 1983-6-22 322 Humboldt Along the north edge of Mad River, near jct of North Bank Road and Hunts Drive. 4 Comment
  HSC40258  Carex obnupta Linda M. Barker 1976-4-30 1417 Humboldt 3 mi. W of Arcata Comment
  HSC86334  Carex obnupta Rudolf W. Becking 1988-4-9 Humboldt South Spit, opposite Fields Landing Comment
  UC1133418  Carex obnupta H. S. Yates 1936-6-18 5730 Humboldt near mouth Little River; Eureka Quadrangle Comment
  POM250761  Carex obnupta D. D. Keck 1938-8-5 4770 Humboldt Big Lagoon, among rocks in open spots on beach Comment
  UC1152077  Carex pachycarpa Joseph P. Tracy 1950-7-25 19064 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC119224  Carex pachystachya Joseph Prince Tracy 1935-6-23 13984 Humboldt French Camp Ridge. 1066 Comment
  POM126147  Carex pachystachya Joseph P. Tracy 1923-6-17 6278 Humboldt Big Lagoon 6 Comment
  POM247172  Carex pachystachya Joseph P. Tracy 1935-6-8 13938 Humboldt Eureka. 0 Comment
  UC302099  Carex pachystachya Joseph P. Tracy 1911-7-7 3390 Humboldt three mi nw junction of Willow Creek with Trinity River (at meadows on mt. side, near Beebe's Ranch); Northern Coast Ranges; NW of junction of Willow Creek w/ Trinity River, Humboldt Co., near Beebe's Ranch. 914 Comment
  HSC76793  Carex pachystachya L. P. Janeway 1982-6-20 17 Humboldt Along Titlow Hill Rd., 3 mi. from Hwy. 299 1220 Comment
  CAS-BOT-BC119166  Carex pansa Joseph Prince Tracy 1935-7-18 14104 Humboldt Low sandy growth at edge of sald marsh next to Table Bluff. 3 Comment
  UC303073  Carex praticola Joseph P. Tracy 1915-6-6 4641 Humboldt Eureka, Stephen Hill place Northern Coast Region 0 Comment
  POM301293  Carex rossii Joseph P. Tracy 1949-5-8 18296 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town. 61 Comment
  CAS-BOT-BC116941  Carex subbracteata Harley Pierce Chandler 1901-5-1 1115 Humboldt Humboldt Bay 30 Comment
  CHSC102860  Carex subbracteata Peter F. Zika 2009-6-16 24500 Humboldt Outer North Coast Range. Above Route 299, 0.7 road miles W of Berry Summit. 780 Comment
  NY11384  Carex tracyi J. P. Tracy 1914-7-4 4547 Humboldt "High Prairie" on Bald Mountain 1066.8 Comment
  JEPS79866  Carex tumulicola Joseph P. Tracy 1916-6-19 4712 Humboldt Laribee Creek at Bosworth's; Northern Coast Ranges, Laribee Creek 457 Comment
  CAS-BOT-BC115539  Carex unilateralis Joseph Prince Tracy 1930-6-15 8756 Humboldt Bordering a pond, Dobbyn Creek 152 Comment
  CHSC90267  Carex utriculata Thomas W. Nelson; Jane P. Nelson 1987-6-11 8600 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  JEPS80028  Carex vesicaria var. major Joseph P. Tracy 1914-9-6 4613 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC562344  Carex vesicaria var. major Joseph P. Tracy 1934-9-15 13668 Humboldt Dow's Prairie 60 Comment
  HSC7088  Carex viridula H. E. Parks Sep 1934 5157 Humboldt Dry Lagoon Comment
  HSC7090  Carex viridula B. D. Rogers 1965-10-2 1017 Humboldt Big Lagoon 0 Comment
  SEINET201052  Carex viridula Joseph P. Tracy 1934-7-30 13505 Humboldt Along coast in front of South End of Stone Lagoon. Dry Lagoon. 3 Comment
  HSC96540  Carex viridula subsp. viridula Gordon Leppig 1997-6-19 447 Humboldt Big Lagoon County Park, Big Lagoon Bog, N section 3 Comment
  HSC99012  Castilleja affinis subsp. affinis C. Witte 2007-5-10 19 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1368 Comment
  UC1011939  Castilleja affinis subsp. litoralis F. W. Pennell and J. P. Tracy 1940-7-6 26082 Humboldt w of Lolita; Table Bluff 1 Comment
  UC1196864  Castilleja affinis subsp. litoralis J. P. Tracy 1901-5-12 1084 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC249254  Castilleja ambigua subsp. humboldtiensis Doris K. Kildale 1928-5-25 6041 Humboldt Eureka - end of third street near drawbridge 15 Comment
  HSC37966  Castilleja ambigua subsp. humboldtiensis Peter Sorensen 1976-6-16 Humboldt Woodley Island. Comment
  UC1222799  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1950-6-17 18839 Humboldt Eureka slough at the railroad bridge Eureka Comment
  BLMAR161  Castilleja applegatei subsp. pinetorum Donald Hazlett 1994-6-7 161 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC98627  Castilleja applegatei subsp. pinetorum Cara Witte 2008-7-11 875 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  HSC56116  Castilleja arachnoidea Gilbert Muth 1979-8-1 11889 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC101746  Castilleja attenuata J. P. Smith, J. O. Sawyer 2010-5-2 12810 Humboldt Along Hwy. 96, N of Orleans 140 Comment
  HSC72482  Castilleja attenuata J. P. Smith, J. O. Sawyer 1973-5-12 6682 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC49514  Castilleja exserta subsp. latifolia R. York 1979-5-18 292 Humboldt Stabilized dunes opposite the Louisiana Pacific mill in Samoa Comment
  RSA183597  Castilleja franciscana D. E. Anderson 1962-7-10 2244 Humboldt Luffenholtz Beach, about 2 miles south of Trinidad along old 101 highway. Comment
  JEPS10639  Castilleja lacera Lincoln Constance 1934-6-25 929 Humboldt Englewood, on e side of road, across road from Collins' Englewood Campground South Fork Eel River, Bull Creek Region, Englewood Comment
  HSC55994  Castilleja miniata Overton, Butler 1979-7-31 11425 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC244879  Castilleja miniata Mrs. H. C. Cantelow 1935-5-31 836 Humboldt 15 mi. N. of Orick Comment
  HSC35593  Castilleja pruinosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2004 Humboldt French Camp, Bald Hills. Comment
  JEPS88837  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7876 Humboldt Horse Mt. Comment
  JEPS10642  Castilleja rubicundula subsp. lithospermoides Milo S. Baker 1923-7-30 165 Humboldt Yager Creek; Head of South Fork Comment
  UC26525  Castilleja subinclusa subsp. franciscana unknown 4815 Humboldt near Little River Comment
  JEPS35816  Castilleja wightii Rimo Bacigalupi, and L. R. Heckard 1964-7-27 8962 Humboldt .12 mi e and above Shelter Cove (in shaded bend of road) Comment
  UC1502106  Ceanothus R. Sutherland 1975-5-13 2 G.13 75 Humboldt Pt. Delgada Quad. 509 Comment
  UC1502113  Ceanothus R. Sutherland 1976-2-2 A 1 .2.76 Humboldt saddle just ne Rattlesnake Ridge; Pt. Delgada Quad., just ne of Rattlesnake Ridge 1051 Comment
  UC1502133  Ceanothus R. Sutherland 1975-7-13 2 .13.75 Humboldt Pt. Delgada Quad. 518 Comment
  RSA398822  Ceanothus cordulatus Thomas W. Nelson, Jane P. Nelson 1976-6-22 2869 Humboldt Goat Mtn lookout 1666 Comment
  UC176960  Ceanothus cordulatus Joseph P. Tracy 1912-7-31 3936 Humboldt near summit of Buck Mt.; Northern Coast Ranges Comment
  UC33617  Ceanothus cuneatus var. cuneatus Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  JEPS82329  Ceanothus foliosus var. foliosus Roger Raiche 1983-7-18 30531 Humboldt King Peak Road, 2.4 mi N of road to Shelter Cove King Range 518 Comment
  HSC37060  Ceanothus incanus R. Sutherland 1975-5-13 18 .13575 Humboldt 290 Comment
  HSC41837  Ceanothus incanus Tom Duebendorfer 1977-4-23 8 Humboldt 2.5 mi S of Shelter Cove Rd. S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC535732  Ceanothus incanus Eleanor Armstrong 1934-8-15 1187 Humboldt Richardson Grove 121 Comment
  CAS-BOT-BC51206  Ceanothus parryi W. R. Dudley 1899-6-20 s.n. Humboldt South Fork of Eel River Comment
  CAS-BOT-BC53060  Ceanothus pumilus Joseph P. Tracy 1927-5-15 8056 Humboldt Hoopa Mountain - On road west from Hoopa Valley 914 Comment
  CAS-BOT-BC52952  Ceanothus thyrsiflorus Kenneth Clark 1980-6-14 684 Humboldt Shelter Cove - Point Delgada quad. Above north fork Dead Man's Gulch. 213 Comment
  CAS-BOT-BC52955  Ceanothus thyrsiflorus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka Comment
  RSA46882  Ceanothus thyrsiflorus Doris K. Kildale 1926-6-18 2399 Humboldt Gold Bluffs. Comment
  UC166485  Ceanothus thyrsiflorus Joseph P. Tracy 1909-8-22 3077 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  UC726578  Ceanothus thyrsiflorus A. A. Heller 1937-6-11 15916 Humboldt Near Big Lagoon Patric Point state Park Comment
  BLMAR733  Ceanothus velutinus Jennifer Wheeler 2015-4-23 733 Humboldt Lacks Creek, End of Pine Ridge Rd 1136 Comment
  HSC35599  Ceanothus velutinus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2014 Humboldt French Camp, Bald Hills. Comment
  UCD129971  Centaurea benedicta P. B. Kennedy 1929-6-13 s.n. Humboldt Etter's Ranch, Ettersburg. Comment
  UC582996  Centaurea solstitialis P. A. Munz 1936-8-9 14332 Humboldt 5 mi n of county line between Humboldt and Mendocino Counties, on south fork of Eel River Humboldt County line; Eel River Comment
  JEPS46932  Centaurium muehlenbergii Joseph P. Tracy 1934-7-9 13347 Humboldt Dobbyn Creek 152 Comment
  RSA54130  Centaurium muehlenbergii H. M. Pollard 1945-8-28 s.n. Humboldt Near Harley place, New Orleans. Comment
  RSA69802  Centaurium muehlenbergii F. W. Peirson 1941-7-29 13110 Humboldt Stephens Grove State Park. Comment
  UC1225817  Centaurium muehlenbergii Joseph P. Tracy 1948-8-22 18109 Humboldt 4 mi e Carlotta (on Van Duzen River); Van Duzen River 30 Comment
  UC906720  Centunculus minimus Joseph P. Tracy 1942-6-15 17156 Humboldt Garberville 152 Comment
  HSC63841  Cephalanthera austiniae M. A. Baker 1979-6-29 954 Humboldt 900 Comment
  HSC4111  Cerastium fontanum subsp. vulgare Richard Steele 1962-5-2 24 Humboldt .25 mi. W of HSC campus 15 Comment
  HSC39837  Cerastium glomeratum Peter Sorensen 1976-6-12 Humboldt Woodley Island, Humboldt Bay Comment
  HSC79373  Cerastium glomeratum Kenneth Clark 1980-3-27 552 Humboldt Above Dead Man's Gulch 183 Comment
  SEINET6904629  Cerastium glomeratum Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  SBBG56423  Chamaecyparis lawsoniana M. Van Rensselaer 1938-3-31 Humboldt Humboldt County [no specific locality] Comment
  SEINET200309  Chamaecyparis lawsoniana Joseph P. Tracy 1926-6-27 7672 Humboldt Horse Mountain 1463 Comment
  SEINET10719673  Chamaecyparis lawsoniana Ronald J. Mastrogiuseppe 1966-1 Mastrogiuseppe s.n. Humboldt Growing in upper Bull Creek, Humboldt Redwoods State Park. Comment
  UC164837  Chamaesyce serpyllifolia Joseph P. Tracy 1911-7-9 3470 Humboldt near mouth Willow Creek; Valley of Trinity River 152 Comment
  HSC75939  Cheilanthes gracillima Overton, Butler 1979-7-24 9702 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC98979  Cheilanthes gracillima Cara Witte 2008-5-26 656 Humboldt 3/4 mile south of Titlow Hill. 1422 Comment
  HSC58197  Chenopodium album G. L. Clifton, Griswold 1979-8-2 12296 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA273388  Chenopodium botrys Thomas W. Nelson, Jane P. Nelson 1977-9-3 3724 Humboldt Along Forest Service Rd. to north of Alder Springs. 1524 Comment
  BLMAR526  Chimaphila menziesii Jennifer Wheeler 2009-6-23 526 Humboldt King range, On King Peak road Comment
  CAS-BOT-BC451386  Chimaphila menziesii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Nat. Trail 1524 Comment
  HSC45429  Chimaphila menziesii Thomas W. Nelson, Jane Nelson 1977-6-19 3488 Humboldt Along road to Goat Hill 1616 Comment
  CAS-BOT-BC451494  Chimaphila umbellata Milo S. Baker 1947-8-10 11899 Humboldt 15 mi. NE of Hoopa near end of forest road 1371 Comment
  SD42334  Chimaphila umbellata Carl B. Wolf 1937-8-12 9209 Humboldt North Coast Range, South Fork Mt., 6/10 mi. So. of Blake Lookout 1676 Comment
  RSA467019  Chimaphila umbellata subsp. occidentalis C. B. Wolf 1937-8-13 9258 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  CAS-BOT-BC36484  Chrysolepis chrysophylla Doris K. Kildale 1927-2-22 2978 Humboldt Kneeland Prairie junction of old road Comment
  JEPS58688  Chrysolepis chrysophylla var. chrysophylla W. L. Jepson 1902-6 2150 Humboldt near McKee's (sw corner Humboldt County) 548 Comment
  UC419030  Chrysolepis chrysophylla var. chrysophylla H. E. Parks, J. P. Tracy 1930-9-15 765 Humboldt road to Kneeland Bald Hills Comment
  UC519308  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  UCD110101  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1936-8-7 15117 Humboldt Trinity Summit. 2 miles southeast of Devil's Hole. 1584 Comment
  UC204118  Chrysosplenium glechomifolium Joseph P. Tracy 1918-4-28 4808 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC314585  Cicuta douglasii Joseph P. Tracy 1925-7-5 7179 Humboldt near High Prairie (Northern Coast Ranges, Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  UC562520  Circaea alpina subsp. pacifica Joseph P. Tracy 1934-7-18 13459 Humboldt Grouse Mt. North Coast Ranges, Grouse Mt. 1524 Comment
  CAS-BOT-BC284403  Cirsium arvense Alice Eastwood 1921-7-21 10659 Humboldt Carlotta Comment
  JEPS59187  Cirsium arvense W. L. Jepson 1936-8-17 17927 Humboldt 3 mi s Fields Landing Comment
  HSC37657  Cirsium arvense R. Sutherland 1976-8-19 6 .19876 Humboldt 259 Comment
  UC1238036  Cirsium douglasii var. douglasii H. E. and S. T. Parks 1947-6-1 24441 Humboldt South Fork Camp Willow Creek Comment
  UC249821  Cirsium douglasii var. douglasii Joseph P. Tracy 1924-7-6 6717 B Humboldt near Ruby Creek (on the Willow Creek Highway); Northern Coast Ranges 609 Comment
  UC249823  Cirsium douglasii var. douglasii Joseph P. Tracy 1924-7-6 6717 Humboldt near Ruby Creek (on the Willow Creek Highway); Northern Coast Ranges 609 Comment
  HSC71801  Cirsium occidentale var. candidissimum M. A. Baker 1980-6-26 2379 Humboldt Near Sims Creek 610 Comment
  JEPS59230  Cirsium occidentale var. candidissimum W. L. Jepson 1902-6-20 1893 Humboldt Ft. Seward Ranch ridge 1219 Comment
  JEPS59288  Cirsium occidentale var. candidissimum W. L. Jepson 1927-7-3 12371 Humboldt near Leggett Valley; South Fork Eel River 365 Comment
  UC1199138  Cirsium occidentale var. venustum Joseph P. Tracy 1936-7-5 15045 Humboldt Horse Mt. 1066 Comment
  CAS-BOT-BC288714  Cirsium remotifolium Peter H. Raven; R. Snow 1958-7-21 13654 Humboldt 7.2 miles NW of Capetown on road to Ferndale Comment
  CAS-BOT-BC288722  Cirsium remotifolium Joseph P. Tracy 1934-7-6 13659 Humboldt Kneeland Prairie 762 Comment
  UC582536  Cirsium remotifolium H. E. Parks and Joseph P. Tracy 1934-7-13 13383 Humboldt vicinity of Trinidad; Northern Coast Region 60 Comment
  UC1223041  Cirsium remotifolium var. odontolepis Joseph P. Tracy 1949-8-11 18472 Humboldt 2 to 6 mi s from Grouse Mt. (e of headwaters of Redwood Creek, beginning where the electric power line crosses, and working south); Kinsey Ridge 1280 Comment
  UC1223053  Cirsium remotifolium var. rivulare Joseph P. Tracy 1947-6-8 17711 Humboldt 5 mi e of town Carlotta (open flat by Strong's District School House) 60 Comment
  HSC74679  Cirsium vulgare Gail Newton 1981-8-6 2397 Humboldt Near Humbug Creek 1256 Comment
  HSC5378  Cirsium vulgare W. R. Rogers 1965-9-1 253 Humboldt 2 mi. N of Arcatam W side of Hwy. 101 Comment
  HSC64527  Clarkia amoena J. P. Smith 1973-5-26 6827 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  CAS-BOT-BC160953  Clarkia amoena subsp. amoena Doris K. Kildale 1928-7-9 5699 Humboldt Bug Creek - Chaparral Mountain 914 Comment
  CAS-BOT-BC160967  Clarkia amoena subsp. amoena S. K. Harris 1936-6-25 s.n. Humboldt On south side of Domingo Gulch on road from Petrolia to Cape Mendocino 30 Comment
  HSC36785  Clarkia amoena subsp. huntiana Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-7-20 2037 Humboldt 3 mi. E of Dinsmore Comment
  CAS-BOT-BC164182  Clarkia concinna Doris K. Kildale 1925-5-24 873 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  HSC32855  Clarkia concinna subsp. concinna Thomas W. Nelson, James Nelson 1973-5-28 938 Humboldt McKeown Ranch N of Dinsmore Comment
  UC1198510  Clarkia concinna subsp. concinna Joseph P. Tracy 1936-6-17 14944 Humboldt lower foothills of nw slope Buck Mountain 762 Comment
  HSC38102  Clarkia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2623 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC172513  Clarkia purpurea subsp. quadrivulnera Mrs. H. C. Cantelow 1940-7-6 s.n. Humboldt Near Dinsmore's Comment
  CDA38034  Clarkia purpurea subsp. quadrivulnera T. R. Haig 1960-6-19 s.n. Humboldt Kneeland School. 0 Comment
  CAS-BOT-BC172388  Clarkia purpurea subsp. viminea Richard Spellenberg 1965-6-13 1109 Humboldt Along road on E side of Trinity River, about 3/4 mile S. of hwy. through Hoopa Indian Reservation Comment
  BLMAR461  Claytonia exigua Jennifer Anthony-Wheeler 2008-3-7 461 Humboldt Samoa dunes, growing in Samoa #3 Endangered Plant Protection Area 12 Comment
  HSC74287  Claytonia exigua subsp. exigua M. A. Baker 1980-7-11 2779 Humboldt Near Red Mtn. 1341 Comment
  HSC45098  Claytonia exigua subsp. exigua R. Sutherland 1978-4-23 26 .23478 Humboldt 729 Comment
  HSC24337  Claytonia perfoliata subsp. perfoliata C. E. Fellows 1971-8-16 398 Humboldt Clam Beach, near end of Central Ave. Comment
  UC161026  Claytonia perfoliata subsp. perfoliata Joseph P. Tracy 1906-4-29 2429 Humboldt near Field's Landing (Humboldt Bay Region); Northern Coast Region, Humboldt Bay Region 0 Comment
  UC183593  Claytonia rubra subsp. depressa Joseph P. Tracy 1913-3-23 4027 Humboldt Humboldt Bay Northern Coast Region (Ocean Beach) Comment
  CAS-BOT-BC443728  Claytonia rubra subsp. rubra Joseph P. Tracy 1949-6-6 18306 Humboldt Happy Camp Mountain (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  HSC17738  Claytonia sibirica J. R. Eichelberger 1964-4-10 25 Humboldt 4 mi. above Blue Lake on Hwy. 299 Comment
  HSC53824  Claytonia sibirica Griswold, Butler 1979-7-10 6270 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC162973  Claytonia sibirica Joseph P. Tracy 1911-6-4 3212 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  UC177197  Claytonia sibirica Joseph P. Tracy 1912-5-11 3608 Humboldt near Hydesville; Northern Coast Region 30 Comment
  UC672987  Claytonia sibirica Joseph P. Tracy 1932-7-14 10536 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  HSC17725  Claytonia sibirica D. E. Anderson 1962-3-31 1970 Humboldt Coastal area of Prairie Creek State Park Comment
  UCD15453  Claytonia sibirica Collector Unknown 1974-1-6 136 Humboldt California, Humbolt Co.; Patricks Pt. State Park along Hwy 101, along trail to Agate Beach; 3 Comment
  HSC14644  Clianthus puniceus R. A. Magie 1964-5-3 58 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  HSC95091  Clinopodium douglasii Andrea Pickart 2002-6-30 134 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 30 Comment
  SBBG58757  Clintonia andrewsiana R. Hartwell 1938-8-5 Humboldt near Eureka Comment
  SEINET12047068  Clintonia andrewsiana F. H. Utech, Utech, C. L. 1972-1 72 -609 Humboldt Humboldt Redwoods State Park, Bull Creek Flats area 213 Comment
  UC179954  Clintonia andrewsiana Joseph P. Tracy 1914-5-17 4473 Humboldt between Ryans Slough and Freshwater Creek (at the Cumens Claim, region about Humboldt Bay); Northern Coast Region 304 Comment
  UC1222545  Clintonia uniflora Joseph P. Tracy 1951-6-26 19556 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC499964  Clintonia uniflora Mrs. H. C. Cantelow 1939-6-5 2446 Humboldt About 1 1/2 miles west of Dinsmores Comment
  HSC97485  Collinsia linearis Cara Witte 2007-5-23 94 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  CAS-BOT-BC412799  Collinsia linearis David D. Keck 1948-7-2 5999 Humboldt Ridge east of Redwood Creek on road to Willow Creek. On US Route 299 609 Comment
  UC594150  Collinsia linearis S. K. Harris, J. P. Tracy 1936-6-10 3266 Humboldt w of the South Fork of the Trinity River near its mouth South Fork of the Trinity River 640 Comment
  HSC41245  Collinsia parviflora Brad Klipfel 1974-5-27 391 Humboldt Horse Mtn. Comment
  UC147888  Collinsia parviflora Joseph P. Tracy 1908-6-9 2658 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UCR45410  Collinsia parviflora Barry Silver 1986-4-23 535 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  HSC39622  Collinsia parviflora Thomas W. Nelson, Jane P. Nelson 1976-6-15 2726 Humboldt Along old trail above Alder Springs 1585 Comment
  HSC100663  Collinsia tenella Carl C. Marshall Apr 1887 369 Humboldt Hoopa Valley. Comment
  HSC48398  Collinsia torreyi Brad Klipfel 1973-6-10 84 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS7057  Collinsia torreyi var. wrightii Joseph P. Tracy 1935-7-28 14314 Humboldt head of Devil's Hole Trinity Summit 1828 Comment
  JEPS71016  Collomia grandiflora Lincoln Constance 1934-6-12 863 Humboldt n bank of river <at> Bull Cr. road; South Fork Eel River, Bull Creek Region, Dyerville Comment
  UC1197852  Collomia grandiflora Joseph P. Tracy 1947-7-9 17829 Humboldt lower slopes Horse Mountain 1127 Comment
  HSC16923  Collomia heterophylla Anonymous 1957-4-27 123 Humboldt 5 mi. E of Honeydew Comment
  HSC45406  Collomia tracyi Thomas W. Nelson, Jane P. Nelson 1977-7-4 3609 Humboldt Along road N from Alder Springs 1524 Comment
  HSC97233  Collomia tracyi Bryan Atkinson, Jenny Lynn Hutchinson 2007-6-11 6 Humboldt Near Grouse Mtn., 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1341 Comment
  UC978533  Collomia tracyi Joseph P. Tracy 1927-6-12 8161 Humboldt in slide rock Northern Coast Ranges, Horse Mountain 1066 Comment
  UC1197344  Conioselinum pacificum Joseph P. Tracy 1913-8-31 4388 Humboldt near Indianola (s end of Humboldt Bay); Northern Coast Region, Humboldt Bay Region 0 Comment
  CHSC31328  Conium maculatum Mark Stopher 1980-6-4 91 Humboldt Along disturbed roadside of Hwy 101 near Elk River s of Eureka. 1 Comment
  HSC69531  Conium maculatum R. Kalal 1980-6-1 4 Humboldt 0.25 mi. N of Hwy. 299, at Essex turnoff 15 Comment
  UC1199443  Conyza floribunda Joseph P. Tracy 1929-10-13 8679 Humboldt Carlotta 60 Comment
  UC709462  Coptis laciniata Joseph P. Tracy 1941-4-8 16856 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon; , Trinity Highway 762 Comment
  UC14966  Corallorhiza maculata Harley P. Chandler June, 1901 1395 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC48687  Corallorhiza mertensiana Brad Klipfel 1973-7-31 256 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC95093  Cordylanthus maritimus subsp. palustris Andrea Pickart 2002-6-27 123 Humboldt Mad River Slough and Dunes, N of parking area at N end of access road. 0 Comment
  UC1409054  Cordylanthus maritimus subsp. palustris Robert F. Thorne and P. Everett 1965-8-7 35209 Humboldt Samoa Peninsula 0 Comment
  BLMAR678  Corethrogyne filaginifolia Jennifer Wheeler 2013-7-12 678 Humboldt King range, Johnny Jack Ridge 677 Comment
  SEINET7836966 Image available Corethrogyne filaginifolia J. B. Davy 1899-6-30 6185 Humboldt Near Ferndale Comment
  UC1601151  Corethrogyne filaginifolia Joseph P. Tracy 1934-7-21 13474 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  RSA286351  Corethrogyne filaginifolia var. californica R. F. Thorne 1974-7-29 45073 Humboldt Samoa Dunes. Comment
  HSC6405  Cornus nuttallii J. R. Eichelberger 1964-4-10 30 Humboldt 7 mi. N of Willow Creek on Hwy. 96. Comment
  RSA167408  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity River Valley, at Willow Creek. Comment
  RSA97270  Cornus nuttallii F. W. Peirson 1923-7-9 3956 Humboldt Humboldt County State Park on Eel River, northern California. Comment
  HSC58001  Cornus sericea subsp. sericea G. L. Clifton, Griswold 1979-7-31 11785 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  RSA394654  Cornus sessilis Jane Turner, Francis M. Ball, B. L. Turner 1962-7-10 1144 Humboldt East Fork Willow Creek Forest Camp, Hwy 299 ca. 5 mi. W of Willow Creek in Six Rivers National Forest. 457 Comment
  RSA46902  Cornus sessilis Doris K. Kildale 1926-8-15 2507 Humboldt Willow Creek. 152 Comment
  HSC93465  Cortaderia selloana Gordon Leppig, Kai Neander 1998-10-12 1104 Humboldt McKinleyville, empty lot on School Rd., behind Mill Creek Shopping Center 30 Comment
  UC146107  Corylus californica Joseph P. Tracy 1906-6-24 2500 Humboldt Humboldt Hill, S side North Coast Region, region about Humboldt Bay 0 Comment
  UC902053  Corylus californica Joseph P. Tracy 1949-8-11 18486 Humboldt 1 1/2 mi SE of Snow Camp 1341 Comment
  HSC31123  Corylus cornuta subsp. californica J. O. Sawyer 1970-6-24 2260 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  HSC95923  Corylus cornuta subsp. californica Will Ferrand 2001-6-17 14 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  CAS-BOT-BC180307  Corylus cornuta subsp. californica H. E. McMinn 1922-8-4 346 Humboldt Along Van Duzen River Comment
  HSC104409  Corylus cornuta subsp. californica Adam N. Canter 2017-3-10 4 Humboldt Table Bluff, along Hookton Road. 13 Comment
  SEINET12031408  Corylus cornuta var. californica F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -282 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  CHSC102915  Cotoneaster lacteus Arthur Lee Jacobson 2007-8-13 Humboldt North Coast. North of Mill Creek and W of Stagecoach Road, southern part of Trinidad State Beach. 50 Comment
  CHSC19513  Cotula coronopifolia J. F. Knezevich 1968-5-14 431 Humboldt Collected 13 miles south of Ferndale at Cape Mendocino. Comment
  HSC49801  Cotula coronopifolia R. York 1979-4-16 236 Humboldt Between Arcata and Eureka along Hwy. 101 Comment
  HSC5431  Cotula coronopifolia H. E. Parks Sep 1941 24211 Humboldt Little River Beach Park, along highway Comment
  UC492244  Crassula connata var. subsimplex Joseph P. Tracy 1932-3-20 9786 Humboldt coast bluffs near Trinidad; Northern Coast Ranges 30 Comment
  CAS-BOT-BC290341  Crepis acuminata Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  CAS-BOT-BC290589  Crepis capillaris David D. Keck; J. Clausen 1935-6-16 3397 Humboldt Orick Comment
  UC538048  Crepis occidentalis subsp. pumila E. B. Babcock 1932-6-23 402 Humboldt near Bridgeport; Art Renfroe's place Comment
  CDA2722  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-3 17446 Humboldt Northwest corner of overpass of Hwy 101 freeway to Garberville, 1 miles south of Fields Landing. 0 Comment
  HSC12016  Croton setiger Wilbur Peterson 1970-10-31 95 Humboldt Scotia Bluffs, edge of Eel River Comment
  HSC40818  Cryptantha affinis Thomas W. Nelson, Jane P. Nelson 1976-6-22 2851 Humboldt Along road to Goat Hill at spring. 1646 Comment
  HSC95656  Cryptantha leiocarpa Andrea Pickart 2002-4-3 26 Humboldt Samoa Dunes, City of Eureka airport. 0 Comment
  HSC99128  Cryptantha torreyana Cara Witte 2008-7-2 796 Humboldt National Forest Road 1; 5 miles south of intersection with 5N04. Before cattle guard crossing. 1406 Comment
  UC525598  Cryptantha torreyana Joseph P. Tracy 1930-6-15 8751 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  UC179963  Cryptantha torreyana Joseph P. Tracy 1914-7-5 4560 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC63843  Cuscuta occidentalis M. Baker 1979-6-26 913 Humboldt Comment
  HSC89900  Cuscuta pacifica var. pacifica Leonel Arguello 1989-9-9 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  SEINET943383  Cuscuta salina var. major C. C. Harris, S. K. Harris 1941-1 1175 Humboldt In Illinois Biol. Monogr. Vi. 161, fig. 32 a-e, 121, 140 (1921) et in Mem. Torrey Bot. Club, xviii. 168, fig. 42 F (1932). Comment
  UC562480  Cuscuta subinclusa Joseph P. Tracy 1924-7-20 6736 Humboldt Brannan Mt., on Willow Creek Road Brannan Mt. 1005 Comment
  UC562297  Cycladenia humilis var. humilis Joseph P. Tracy 1935-7-29 14349 Humboldt Devil's Backbone - ridge connecting Trinity Summit with Salmon Summit; Devil's Backbone 1676 Comment
  UCD60127  Cynosurus cristatus Ray Evans 1956-7-19 s. n. Humboldt 4.5 miles northwest of Petrolia. Comment
  HSC89500  Cynosurus echinatus M. Roantree 1985-5-30 68 Humboldt West side of Trinidad Head Comment
  UC1145091  Cynosurus echinatus Joseph P. Tracy 1947-6-8 17708 Humboldt 5 mi e Carlotta (by old Strong's District School House); e of Carlotta 60 Comment
  UCD60186  Cynosurus echinatus Joseph P. Tracy 1950-6-23 18865 Humboldt Dobbyn Creek, 3 miles northeast of Alderpoint. 213 Comment
  UCR45822  Cynosurus echinatus Kenneth Clark 1980-4-18 579 Humboldt North Coast, Shelter Cove, on access trail to Dead Man's Gulch 122 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
  UCD105685  Cytisus scoparius R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  HSC54578  Dactylis glomerata Overton, Butler 1979-7-24 9616 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC74563  Dactylis glomerata M. A. Baker 1980-5-17 1244 Humboldt Near Le Perron Peak 1066 Comment
  HSC9530  Dactylis glomerata R. D. Zortman 1963-4-14 30 Humboldt 5.0 mi. NE of Arcata, off Warren Creek Road. 91 Comment
  CAS-BOT-BC189743  Danthonia californica Joseph P. Tracy 1935-7-23 14137 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  HSC40398  Danthonia californica Thomas W. Nelson 1976-7-9 3008 Humboldt S of Mtn. Lassic, (Signal Peak). 1707 Comment
  UCD60501  Danthonia californica R. Tofsrud 1947-6-28 s.n. Humboldt Between Capetown and Ferndale. Comment
  SEINET10598361  Danthonia intermedia Joseph P. Tracy 1934-7-18 Tracy 13421 Humboldt Grouse Mountain, wet meadow. 1524 Comment
  CAS-BOT-BC420358  Darmera peltata Doris K. Kildale 1928-6-24 5247 Humboldt Redwood Creek at Berry's Comment
  CHSC26758  Daucus carota M. S. Taylor 1977-8-5 1432 Humboldt Around bridge over Eeel River, at turnoff from Hwy 101 to Ferndale, in Fernbridge. Comment
  HSC21479  Daucus carota H. D. Sumner 1959-7-20 Humboldt West End Rd. along the Mad River 3 Comment
  RSA304852  Delphinium decorum subsp. decorum James R. Shevock 1971-5-29 1137 Humboldt Trinity Hwy 299. 244 Comment
  CAS-BOT-BC33215  Delphinium decorum subsp. tracyi Harold Ernest Parks; Joseph Prince Tracy 1930-3-25 789 Humboldt Laribee Valley 914 Comment
  CAS-BOT-BC9032  Delphinium decorum subsp. tracyi Doris K. Kildale 1928-5-19 5213 Humboldt Chalk Mountain Comment
  HSC102608  Delphinium decorum subsp. tracyi M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1595 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  UC427876  Delphinium decorum subsp. tracyi H. E. Parks and J. P. Tracy 1930-5-25 789 Humboldt Laribee Valley 914 Comment
  POM126169  Delphinium decorum subsp. tracyi Joseph P. Tracy 1922-6-5 6082 Humboldt Head of S Yager Creek. 762 Comment
  UC183703  Delphinium decorum subsp. tracyi Joseph P. Tracy 1913-6-17 4156 Humboldt streamlet near summit Northern Coast Ranges, Buck Mountain 1219 Comment
  RSA152334  Delphinium hesperium Joseph P. Tracy 1948-6-20 18070 Humboldt Trinity River Valley, Willow Creek Comment
  HSC100614  Delphinium hesperium Carl C. Marshall Jun 1886 80 Humboldt Redwood region. 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
  POM126514  Delphinium nudicaule Joseph P. Tracy 1922-4-30 6012 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  CHSC1447  Delphinium trolliifolium A. Small 1954-6-3 Humboldt Near Ferndale. Comment
  HSC46069  Delphinium trolliifolium G. N. Bos 1965-5-15 276 Humboldt Berry Summit near Hwy. 299 793 Comment
  UC1075803  Delphinium trolliifolium E. K. Balls and L. W. Lenz 1955-5-15 20736 Humboldt hills 9.9 mi sw Fernbridge (along Old Coast rd to Capetown) 502 Comment
  UC162819  Delphinium trolliifolium Joseph P. Tracy 1908-6 2712 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC24424  Delphinium trolliifolium R. Spellenberg 1965-6-14 1131 Humboldt 3.5 mi. S of Kneeland, 1.5 mi. N of junction with Barry Rd. Comment
  HSC37429  Delphinium trolliifolium B. R. Templeton 1962-5-24 Humboldt W slope of Berry Summit Comment
  UC1196341  Delphinium trolliifolium Joseph P. Tracy 1921-6-19 5831 Humboldt Berry Mt. Northern Coast Ranges 914 Comment
  RSA10043  Deschampsia beringensis Joseph P. Tracy 1927-7-16 8257 Humboldt Around Humboldt Bay. Mouth of Elk River. 6 Comment
  CAS-BOT-BC194339  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1927-7-16 8257 Humboldt Mouth of Elk River, around Humboldt Bay, just south of Eureka 6 Comment
  HSC27104  Deschampsia cespitosa subsp. holciformis L. M. Malloy 1965-5-19 38 Humboldt Arcata, southside of Samoa Rd., opposite of KATA radio station, adjacent to the railroad tracks, bank of a drainage ditch. Comment
  UC187272  Deschampsia danthonioides Joseph P. Tracy 1911-7-7 3379 Humboldt 3 mi. n.w. of junction of Willow Creek with Trinity R. (near Beebe's Ranch, at meadows on mt. side); Northern Coast Ranges 914 Comment
  UC526671  Deschampsia elongata Joseph P. Tracy Jul 16 1930-Jul 19 1930 9092 Humboldt S. Fork Mt. near McKay Camp Northern Coast Ranges, S. Fork Mt. 1676 Comment
  UC526673  Deschampsia elongata Joseph P. Tracy 1932-7-14 10552 Humboldt Corral Prairie, Trinity Summit, Klamath Mts. Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UCD63575  Deschampsia elongata Harley P. Chandler 1901-6-1 1331 Humboldt Hupa Indian Reservation. 304 Comment
  SEINET3927555  Deschampsia elongata J. O. Sawyer, R. J. Cole 1977-7-3 3019 Humboldt Hoopa quad. Envorons of Mud Spring. Big Hill Road (F. S. 8N01).; 0 1524 Comment
  HSC74201  Descurainia incisa subsp. incisa M. A. Baker 1980-7-19 3005 Humboldt Near Bret Hole. 1814 Comment
  HSC37421  Dicentra formosa Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 514 Humboldt Along Lost Man Creek. 38 Comment
  UC1362291  Dicentra formosa Kingsley R. Stern 1964-6-13 2107 Humboldt ca 2 mi s Miranda (on e side of U.S. Highway 101, ca 50 yds n of Fish Creek) Comment
  CAS-BOT-BC402408  Dicentra formosa subsp. formosa Joseph P. Tracy 1933-7-16 12794 Humboldt North Coast Ranges. South Fork Mt. 1676 Comment
  HSC72685  Dicentra formosa subsp. oregana J. P. Smith 1977-7-3 9267 Humboldt Onion Lake Comment
  UC1198178  Dichelostemma X venustum Joseph P. Tracy 1947-5-10 17683 Humboldt Miranda, along the South Fork of Eel River South Fork of Eel River 121 Comment
  CAS-BOT-BC483662  Dichelostemma capitatum Alice Eastwood; John Thomas Howell 1937-6-23 4787 Humboldt Near Dinsmore's Comment
  UC1198163  Dichelostemma congestum Joseph P. Tracy 1914-5-14 4446 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UC1133927  Dichelostemma ida-maia A. E. Wieslander 1931-5-15 191 Humboldt Hoopa Indian Reservation Hoopa Quad. Comment
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May 14 2010
  CAS-BOT-BC501016  Dichelostemma ida-maia Lyman Benson 1930-7-18 2188 Humboldt West of Willow Creek, Seaward N. Coast, west of Trinity River 457 Comment
  CAS-BOT-BC501023  Dichelostemma ida-maia H. C. Cantelow 1935-5-30 850 Humboldt Near Garberville Comment
  HSC3026  Dichelostemma ida-maia William J. Ferlatte, B. D. Rogers 1966-6-15 2102 Humboldt Plympton Ranch 915 Comment
  RSA21187  Dichelostemma ida-maia Carl B. Wolf 1937-8-11 9146 Humboldt North Coast Range, 3 mi W of little Van Duzen River at summit of grade - Dinsmore to Bridgeville. 762 Comment
  SEINET3885674  Dichelostemma pulchellum James P. Smith 1973-5-5 6485 Humboldt Roadside and streamside along Cook and Green Pass.; 0 Comment
  CAS-BOT-BC150346  Diplacus aurantiacus Alice Eastwood 1907-4-21 6 Humboldt Trinidad Comment
  CAS-BOT-BC153236  Diplacus kelloggii Lincoln Constance; Reed C. Rollins 1942-5-12 2894 Humboldt Bluffs at junction of Klamath and Salmon rivers, 1 mile south of Somes Bar 152 Comment
  CHSC27890  Disporum smithii Susan Perkins 1978-4-25 42 Humboldt Redwood Park, e end of 13th St., Arcata, 0.8 mi e of City Hall. 7 mi nne of Eureka. 48 Comment
  JEPS61836  Disporum smithii W. L. Jepson 1932-7-27 16477 Humboldt Bull Creek Comment
  RSA10939  Disporum smithii Victor Duran 1933-5-12 3413 Humboldt Dyerville, South Fork of the Eel River Comment
  RSA68743  Disporum smithii Victor Duran 1933-5-12 3413 Humboldt Bull Creek, at South Fork of the Eel River Comment
  SEINET4170363  Disporum smithii Unknown 1933-5-12 3413 Humboldt Dyerville, South Fork of the Eel River Comment
  HSC26352  Distichlis spicata T. O. Osborne 1970-4-5 68 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  UC562749  Dodecatheon alpinum Joseph P. Tracy 1932-7-14 10565 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UC1199497  Downingia elegans Joseph P. Tracy 1934-7-9 13360 Humboldt near Bosworth's; Larrabee Creek 457 Comment
  RSA79374  Draba verna E. K. Balls, Lee W. Lenz 1952-5-12 17200 Humboldt 0.6 mi E of Dinsmore along Hwy 36 from Alton to Red Bluff. Comment
  UC1199180  Draba verna Joseph P. Tracy 1931-3-26 9290 Humboldt along Van Duzen River (Alton); North Coast Ranges, along Van Duzen River 30 Comment
  UCSB26681  Drosera rotundifolia Havlik, Neil 1968-8-21 Humboldt South end of Big Lagoon; north of Trinidad Comment
  HSC99091  Drymocallis lactea var. lactea Cara Witte 2008-7-16 911 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  HSC975  Dryopteris arguta R. I. Bonn 1965-5-9 49 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC7298  Dulichium arundinaceum D. E. Anderson 1963-9-29 2849 Humboldt Fish Lake Comment
  HSC98715  Dysphania botrys Cara Witte 2007-8-1 617 Humboldt Friday Ridge Road (Forest Service Road 6N08). 1/4 mile east of intersection with Friday Camp. 1297 Comment
  HSC7305  Eleocharis acicularis J. P. Tracy 1934-7-13 13393 Humboldt Dow's Prairie 61 Comment
  UC1103652  Eleocharis acicularis Joseph P. Tracy 1936-6-28 15025 Humboldt Lake Prairie Bald Mountain 1066 Comment
  HSC39049  Eleocharis macrostachya Linda M. Barker 1976-6-22 1621 Humboldt 3 mi. W of Arcata Comment
  UC1103661  Eleocharis obtusa Joseph P. Tracy 1920-8-15 5365 Humboldt Klamath River at Bluff Creek Northern Coast Ranges Comment
  RSA53823  Eleocharis obtusa var. engelmannii Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  CDA31707  Elymus glaucus Russell Graham Aug 1960 Humboldt Near Weitchpec 0 Comment
  RSA10138  Elymus glaucus Joseph P. Tracy 1926-6-20 7652 Humboldt Horse Mountain 1402 Comment
  UC38141  Elymus glaucus Joseph Burtt Davy and Walter C. Blasdale 1899-6-27 5878 Humboldt Martin's Ferry Comment
  SEINET11682991  Elymus glaucus K. S. Erdman 1970-1 4785 Humboldt Doleson Hill Prairie, Bald Hills Road SE of Orick Comment
  SEINET200645  Elymus glaucus subsp. glaucus J. P. Tracy 1936-6-9 14889 Humboldt Bear River Ridge 457 Comment
  CAS-BOT-BC234110  Elymus multisetus Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans Comment
  UC187090  Elymus multisetus Joseph P. Tracy 1908-6 2691 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC523866  Elymus multisetus Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1346 Humboldt near bridge on Trinity Highway; Floodplain of Trinity River 152 Comment
  UC573853  Elymus multisetus H. S. Yates 1936-6-17 5722 Humboldt near Burr Valley; South Fork Pk. Quadrangle Comment
  UCD62528  Elymus repens R. Tofsrud 1949-7-1 Humboldt Ferndale. Comment
  HSC8763  Elymus trachycaulus subsp. trachycaulus D. W. C. 1956-6-20 19 Humboldt May Ranch, Bridgeville. 457 Comment
  HSC102933  Epilobium M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 956 Humboldt Patterson Meadows 1555 Comment
  SD38380  Epilobium angustifolium Edith A. Purer 1932-7-27 4148 Humboldt Near Samoa Comment
  RSA668413  Epilobium angustifolium var. macrophyllum Thomas W Stark 1967-7-18 79 Humboldt West side of U.S. Rt. 101, 1 miles south of town of McKinleyville 61 Comment
  CDA30232  Epilobium brachycarpum M. K. Beyers, I. Shepardson 2009-9-13 257 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  HSC54564  Epilobium brachycarpum Overton, Butler 1979-7-24 9583 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  HSC99549  Epilobium brachycarpum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 214 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA167259  Epilobium brachycarpum Joseph P. Tracy 1950-9-10 19356 Humboldt Bear River Ridge 610 Comment
  JEPS31511  Epilobium campestre Joseph P. Tracy 1938-7-5 16004 Humboldt open flat by old Strong's District School House (in dried pond bed, 5 mi e of town); Carlotta 45 Comment
  HSC16549  Epilobium canum subsp. latifolium Paul Shields 1955-9-25 Humboldt 17 mi. SE of Willow Creek Comment
  HSC45595  Epilobium ciliatum subsp. ciliatum Diane L. Reed 1978-5-27 141 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  UC146135  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1909-7-31 3053 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC43272  Epilobium ciliatum subsp. ciliatum R. Sutherland 1976-8-6 16 .6876 Humboldt 223 Comment
  POM32458  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1916-9-5 4768 Humboldt North Coast Ranges: South Fork of Eel River 4 miles above the mouth 61 Comment
  SD219078  Epilobium ciliatum subsp. glandulosum Robert F. Thorne, P. Everett 1965-8-9 35347 Humboldt Along Highway 101, ca. 3.0 miles north of Eureka. 2 Comment
  RSA26250B  Epilobium ciliatum subsp. watsonii I. L. Wiggins 1940-7-10 9487 Humboldt Table Bluff Comment
  JEPS38204  Epilobium densiflorum Joseph P. Tracy 1917-9-3 4852 Humboldt Jones Ranch Northern Coast Ranges, Grouse Mt. (lower w slopes) 914 Comment
  HSC49644  Epilobium hallianum J. P. Smith, Steve Selva 1970-6-30 4147 Humboldt Comment
  HSC72699  Epilobium minutum Gail Newton 1980-6-24 582 Humboldt Near Ladder Rock 1570 Comment
  HSC44405  Epilobium minutum R. York 1978-5-6 157 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 Comment
  UC583070  Epilobium minutum P. A. Munz 1936-8-13 14382 Humboldt 10 mi w Willow Creek Comment
  HSC53953  Epilobium oreganum Terry Griswold, Marvin Butler 1979-7-11 7003 Humboldt Near Snow Camp Lake, close to the town of Willow Creek 1393 Comment
  UC1198495  Epilobium torreyi Joseph P. Tracy 8744 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  UC198612  Epilobium torreyi Joseph P. Tracy 1916-6-19 4728 Humboldt forks of Dobbyn Creek; Northern Coast Ranges 182 Comment
  POM232041  Epipactis gigantea I. L. Wiggins 1930-7-8 4677 Humboldt Sandstone cliffs along the Eel River, near Scotia Comment
  HSC98608  Equisetum arvense Cara Witte 2008-6-15 737 Humboldt National Forest 1. 1.5 miles north of intersection with Forest Service Road 6N01B. 1487 Comment
  SEINET5525683 Image available Equisetum telmateia Unknown 1983-6-16 Humboldt Patricks Pt State Park Comment
  HSC54551  Equisetum telmateia subsp. braunii Overton, Butler 1979-7-23 9541 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  RSA21604  Equisetum telmateia var. braunii C. B. Wolf 1937-9-14 9351 Humboldt North Coast Range, Lord Ellis Road, 7.6 miles east of Blue Lake. 213 Comment
  UC1103228  Eragrostis cilianensis Joseph P. Tracy 1931-9-7 9654 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley at Willow Creek 152 Comment
  RSA44367  Eragrostis mexicana subsp. virescens Henry M. Pollard 1947-8-7 1949 Humboldt Klamath River sandbar near Orleans Comment
  CAS-BOT-BC278517  Eragrostis pilosa var. pilosa Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region Comment
  CAS-BOT-BC299912  Erechtites minimus K. Boynton 1920-9-28 s.n. Humboldt 6 mi. south of Ferndale Comment
  POM318607  Erechtites minimus Patricia Wilder 1968-8-21 4379 Humboldt Big Lagoon Park, just west of U.S. 101 15 Comment
  RSA89771  Erechtites minimus P. A. Munz 1954-7-25 19871 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  UC502962  Eremocarpus setiger Joseph P. Tracy 1927-10-23 8390 Humboldt McClellan Mountain Northern Coast Ranges 762 Comment
  HSC22165  Ericameria greenei J. O. Sawyer 1968-9-27 730 Humboldt Near Waterdog Lakes and N Trinity Mtn. 1768 Comment
  POM174061  Erigeron biolettii Joseph P. Tracy 1918-7-6 5052 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  UCR51767  Erigeron bloomeri var. nudatus H. E. Parks 1937-1 24- 22 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC296116  Erigeron foliosus var. confinis Doris K. Kildale 1928-7-1 5665 Humboldt Klamath River at Bluff Creek Comment
  JEPS41520  Erigeron foliosus var. mendocinus Lincoln Constance 1934-5-29 720 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region, Upper Look Prairie 365 Comment
  CDA4960  Erigeron glaucus G. D. Barbe, T. C. Fuller 1974-6-17 1834 Humboldt Lower Pacific Drive at Sail Court, west of the golf course, south of the sewer plant, Shelter Cove. 0 Comment
  HSC89599  Erigeron glaucus M. Roantree 1985-4-28 18 Humboldt W side of Trinidad Head on an outcropping W of the trail Comment
  UC581715  Erigeron inornatus var. inornatus Joseph P. Tracy 1933-8-6 12935 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC214589  Erigeron philadelphicus Mrs. E. C. Sutliffe 1927-6-1 s.n. Humboldt Bull Creek Comment
  HSC5528  Erigeron philadelphicus Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  HSC79512  Erigeron philadelphicus Kenneth Clark 1980-6-14 697 Humboldt Shelter Cove; in stream alluvium of N fork of Dead Man's Gulch 198 Comment
  SEINET9351061  Erigeron philadelphicus Unknown 1935-5-22 Humboldt Fort Seward. Comment
  JEPS41378  Erigeron philadelphicus var. philadelphicus W. L. Jepson 1934-5-7 16688 Humboldt Bull Creek Comment
  UC34163  Erigeron philadelphicus var. philadelphicus Harley P. Chandler 1901-6-1 1402 A Humboldt North Coast Ranges, Klamath River 304 Comment
  UC581734  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1936-6-17 1463 Humboldt on nw slope Buck Mountain; Northern Coast Ranges, , Burr Valley 1066 Comment
  JEPS21928 Image available Erigeron robustior J. P. Tracy 1932-6-26 10252 Humboldt valley of South Yager Creek, Humboldt Co. 762 Comment
  HSC54002  Eriogonum compositum Griswold, Butler 1979-7-10 7111 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  BLMAR108  Eriogonum latifolium Jennifer Anthony-Wheeler 1994-9-8 108 Humboldt Samoa/manilla dunes, growing in every dune mat area in the samoa rare plant protection area 12 Comment
  CAS-BOT-BC259156  Eriogonum latifolium Ira L. Wiggins 1930-7-11 4680 Humboldt Near Samoa Comment
  SBBG28255  Eriogonum latifolium H. E. Parks -Aug-1941 24198 Humboldt Little River Comment
  SD38692  Eriogonum latifolium Edith A. Purer 1932-7-30 4669 Humboldt South of Orick, sand dunes Comment
  SD38694  Eriogonum latifolium Edith A. Purer 1932-7-27 4149 Humboldt Near Samoa, near Arcata Comment
  CAS-BOT-BC259530  Eriogonum luteolum var. luteolum H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  UC1198139  Eriogonum nudum var. nudum Joseph P. Tracy 1939-8-20 16430 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  CAS-BOT-BC261497  Eriogonum nudum var. nudum Doris K. Kildale 1927-5-15 3247 Humboldt Petrolia, bank of Mattole River Comment
  RSA21586  Eriogonum nudum var. nudum Carl B. Wolf 1937-8-13 9231 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC54740  Eriogonum nudum var. nudum Joseph Burtt Davy and Walter C. Blasdale 1899-6-20 5705 Humboldt Hoopa Valley North Coast Ranges, Hoopa Valley Comment
  CAS-BOT-BC261729  Eriogonum nudum var. oblongifolium Alice Eastwood 1923-8-16 12328 Humboldt Carlotta Comment
  BLMAR664  Eriogonum nudum var. oblongifolium Jennifer Wheeler 2012-7-10 664 Humboldt King range, Trail to Mackey allotment, along gravely dry slopes 609 Comment
  SD42294  Eriogonum nudum var. pubiflorum Carl B. Wolf 1937-9-8 9300 Humboldt North Coast Range, Bull Creek-Petrolia Road, 11 Mi. W. of Redwood Highway 305 Comment
  CAS-BOT-BC267970  Eriogonum umbellatum var. argus Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1676 Comment
  CAS-BOT-BC444001  Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8347 Humboldt Along U.S. Forest Service Road 1 near White Rock Springs at milepost 7.6, about 7.8 air miles southwest of Salyer 1493 Comment
  UC412902  Eriogonum umbellatum var. nelsoniorum P. E. Goddard 1906-6 657 Humboldt Lasseck Pk. Comment
  HSC99135  Eriogonum umbellatum var. nelsoniorum Cara Witte 2008-7-10 854 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  HSC70697  Eriogonum umbellatum var. stellatum Gail Newton 1980-7-15 1556 Humboldt Near Sims Mtn. 1311 Comment
  HSC5592  Eriophyllum lanatum D. E. Anderson 1963-3-16 2384 Humboldt Scotia Bluffs Comment
  CAS-BOT-BC301015  Eriophyllum lanatum var. achilleoides Doris K. Kildale 1926-5-9 1980 Humboldt Kneeland Prairie 762 Comment
  HSC32327  Eriophyllum lanatum var. achilleoides D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5668 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC56464  Eriophyllum lanatum var. achilleoides Griswold, Butler 1979-7-12 7262 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC129577  Eriophyllum lanatum var. achilleoides Joseph Burtt Davy and Walter C. Blasdale 1899-6 5379 Humboldt near Harris Comment
  CAS-BOT-BC301180  Eriophyllum lanatum var. arachnoideum Carl B. Wolf 1927-8-29 1193 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge--Mt. Glen Comment
  UC165841  Eriophyllum lanatum var. arachnoideum Joseph P. Tracy 1906-7-15 2539 Humboldt Table Bluff Northern Coast, Region about Humboldt Bay, Table Bluff 0 Comment
  UC165849  Eriophyllum lanatum var. grandiflorum Joseph P. Tracy 1911-7-6 3366 Humboldt w side of river near Willow Creek; North Coast Ranges, Trinity River 304 Comment
  UC582675  Eriophyllum lanatum var. lanceolatum Joseph P. Tracy 1933-8-6 12936 Humboldt French Camp Ridge 1066 Comment
  UC642240  Eryngium aristulatum var. aristulatum Joseph P. Tracy 1938-8-20 16125 Humboldt Alton 30 Comment
  UC161540  Erysimum capitatum Joseph P. Tracy 1908-6-8 2636 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC54909  Erysimum menziesii G. B. Rossbach 1955-6-10 596 Humboldt Depression in coastal dunes near Humboldt Bay lighthouse between Fairhaven and end of Sandy point off Eureka. Comment
  UC1199174  Erysimum menziesii Joseph P. Tracy 1918-5-5 4920 Humboldt sand dunes of Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
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Apr 21 2012
  HSC71223  Erythronium californicum Thomas W. Nelson 1977-4-20 3331 Humboldt Along USFS Road 1N15 at summit 915 Comment
  SDSU19195  Erythronium californicum Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3005 Humboldt Six Rivers National Forest. Adjacent to Titlow Hill Road, ca. 4.6 miles south of junction with Hwy 299 (at Berry Summit), southeast of intersection with dirt road to Horse Mtn. Ca. 0.6 mile south of Horse Mtn. Radio Tower. 1437 Comment
  HSC96197  Erythronium grandiflorum subsp. grandiflorum Jennifer Lumbert, James Robinson 2005-6-15 14 Humboldt NE of Grouse Mtn. 1490 Comment
  HSC100888  Erythronium hartwegii Carl C. Marshall Jul 1886 334 Humboldt Trinity summit E of Hoopa. Comment
  UC1541310  Erythronium purpurascens W. K. Parks July 1933 1397 Humboldt South Fork Mountain Comment
  UC13823  Erythronium revolutum Harley P. Chandler June, 1901 1279 Humboldt Hupa Indian Reservation North Coast Ranges 1066 Comment
  HSC104347  Erythronium revolutum James Regan, Humboldt Redwood Co., LLC 2007-5-7 20 Humboldt Kneeland 854 Comment
  HSC12348  Eschscholzia californica Steve Dorei 1970-10-20 111 Humboldt Along Plaza Ave., 200 ft. SW of Laurel Dr. Comment
  UC146099  Eschscholzia californica Joseph P. Tracy 1904-7-4 2118 Humboldt near Bucksport; Northern Coast Region, region about Humboldt Bay 0 Comment
  POM160277  Eschscholzia californica var. crocea Joseph P. Tracy 1926-5-15 7485 Humboldt Kneeland Prairie, North Coast Ranges 762 Comment
  RSA0024550  Eucephalus ledophyllus var. covillei Joseph P. Tracy 1919-9-18 5227 Humboldt Trinity Summit. 1890 Comment
  JEPS51869  Euphorbia crenulata Harley P. Chandler Jun 1901 1457 Humboldt Bluff Creek; North Coast Ranges, Klamath River 304 Comment
  HSC97316  Euphorbia oblongata M. Mesler 2007-6-9 761 Humboldt Titlow Hill Rd. 1067 Comment
  HSC34947  Euphorbia peplus Dryden 1975-4-20 124 Humboldt Yard 0 Comment
  CAS-BOT-BC312212  Eurybia radulina Doris K. Kildale 1927-7-25 3839 Humboldt Table Bluff near lighthouse Comment
  JEPS32360  Euthamia occidentalis Joseph P. Tracy 1931-9-7 9636 Humboldt opposite mouth of, at Lack Pond, (in Trinity R. Valley opp. mouth of Willow Cr.) Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  HSC73806  Festuca arundinacea M. A. Baker 1980-6-16 1938 Humboldt Near Monks Camp. 1097 Comment
  UC1152015  Festuca arundinacea Joseph P. Tracy 1951-6-21 19522 Humboldt back of Everett Beck house; Hydesville Comment
  HSC74274  Festuca californica M. A. Baker 1980-5-23 1382 Humboldt Near Buck Mtn. 1524 Comment
  UC1103703  Festuca elmeri Joseph P. Tracy 1942-5-16 17339 Humboldt Garberville 152 Comment
  UC1103725  Festuca occidentalis Joseph P. Tracy 1911-7-7 3415 Humboldt viz ridge n Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC53596  Festuca occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5369 Humboldt near Harris Comment
  UC70910  Festuca occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5472 Humboldt near Elk Prairie Comment
  UCR137175  Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River, near Bridgeville 197 Comment
  CAS-BOT-BC278962  Festuca rubra David D. Keck 1944-7-11 5490 Humboldt 3 mi. N.E. of Capetown 152 Comment
  HSC103065  Festuca rubra J. P. Smith 2014-6-4 13867 Humboldt Big Lagoon County Park 5 Comment
  HSC37914  Festuca rubra Peter Sorensen 1976-7-14 Humboldt Humboldt Bay, Woodley Island Comment
  UC526867  Festuca rubra Joseph P. Tracy 1927-6-8 8112 Humboldt Trinidad Northern Coast Region 60 Comment
  UCD66367  Festuca rubra Linda M. Barker 1976-6-22 1617 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET200688 Image available Festuca subuliflora J. P. Tracy 1900-5-22 801 Humboldt Immediate vicinity of Eureka 0 Comment
  CHSC24854  Fragaria vesca A. D. Launer 1976-4-10 1 Humboldt On n roadbank of Church St., ca. 100 yds e of Blocksburg. 472 Comment
  HSC32950  Fragaria vesca Thomas W. Nelson, James Nelson 1973-5-28 959 Humboldt McKeown Ranch N of Dinsmore Comment
  CAS-BOT-BC59968  Frangula purshiana Harley P. Chandler 1901-5-1 1173 Humboldt Humboldt Bay. 30 Comment
  UCD112825  Frangula purshiana Roman Gankin 1965-8-6 549 Humboldt on Matolle Road, 7.4 miles northeast of Capetown. Comment
  HSC18422  Frangula purshiana subsp. purshiana R. T. Haase 1965-4-26 11 Humboldt Comment
  CAS-BOT-BC217699  Fraxinus latifolia Doris K. Kildale 1927-5-15 3293 Humboldt Petrolia, Mattole River Comment
  UC1198637  Fraxinus latifolia Joseph P. Tracy 1923-6-19 6293 Humboldt Upper Mattole North Coast Ranges 152 Comment
  HSC100890  Fritillaria Carl C. Marshall Apr 1887 396 Humboldt Hoopa. Comment
  UC275552  Fritillaria affinis Joseph P. Tracy 1923-4-15 6184 Humboldt Redwood Creek, at Berry's Redwood Creek; Northern Coast Ranges, , Berry's 274 Comment
  SEINET8272054  Fritillaria purdyi Doris K. Kildale 1926-3-21 1575 Humboldt Kneeland Prairie. Comment
  HSC70724  Galium aparine Gail Newton 1980-7-14 1519 Humboldt Near Deadman Ridge 1097 Comment
  HSC73126  Galium aparine M. A. Baker 1980-5-18 1305 Humboldt Near Black Mtn. 1006 Comment
  HSC99414  Galium aparine K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 63 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
  HSC99827  Galium aparine Jimerson, Pageau 1979-6-13 541 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  JEPS6719  Galium bolanderi Joseph P. Tracy 1935-7-29 14339 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC41599  Galium bolanderi Thomas W. Nelson, Jane P. Nelson 1977-8-6 3705 Humboldt Above Alder Springs 1555 Comment
  UC1196089  Galium bolanderi Joseph P. Tracy 1933-7-9 12642 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC100642  Galium californicum Carl C. Marshall Jul 1887 400 Humboldt Spruce Grove. Comment
  JEPS52864  Galium californicum subsp. californicum Lauramay T. Dempster and Jean Colton 1963-8-7 3889 Humboldt Redwood Hwy (101) just n Richardson Grove Comment
  UC1196117  Galium californicum subsp. californicum Joseph P. Tracy 1934-7-9 13337 Humboldt ridge 5 mi s Harris 762 Comment
  HSC31221  Galium muricatum D. E. Anderson 1972-6-20 5727 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  JEPS52830  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-8 3844 Humboldt 1.8 mi w Willow Creek town (below Boise Creek Campground) 182 Comment
  SD70521  Galium porrigens var. porrigens Lauramay T. Dempster, G. L. Stebbins 1963-7-8 3843 Humboldt Willow Creek at Hwy. crossing north of Willow Creek town 459 Comment
  HSC58074  Galium triflorum G. L. Clifton, Griswold 1979-8-1 11968 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC19825  Galium triflorum Yarick 1960-8-5 Humboldt M&M, 7 mi., Krueger Creek Comment
  CAS-BOT-BC303397  Gamochaeta ustulata L. R. Abrams 1916-7-11 6021 Humboldt Mouth of Grizzly Creek on Van Duzon River Comment
  UC1196890  Garrya buxifolia Joseph P. Tracy 1933-7-11 12677 Humboldt Horse Mountain 1402 Comment
  SBBG22046  Garrya elliptica R. F. Thorne 1957-9-3 19023 Humboldt Patrick's Point State Park Comment
  UC1196888  Garrya elliptica Joseph P. Tracy 1924-1-20 6595 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region 6 Comment
  UC154057  Garrya elliptica J. P. Tracy 1901-2-22 993 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC182144  Garrya fremontii S. Matthews; M. Goering; R. James 1985-5-10 058 Humboldt unspecified 1143 Comment
  HSC57629  Garrya fremontii G. L. Clifton, Griswold 1979-7-25 10777 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1051597  Garrya fremontii Joseph P. Tracy 1948-9-12 18214 Humboldt 1 mi w Mud Springs; Trinity Summit 1158 Comment
  UC1196893  Garrya fremontii Joseph P. Tracy 1947-7-9 17840 Humboldt Horse Mountain 1402 Comment
  UC1225768  Garrya fremontii Joseph P. Tracy 1939-1-14 1618 a Humboldt Willow Creek; Trinity River Valley 152 Comment
  UCD121142  Garrya fremontii George W. Jordan 1922-11-18 s.n. Humboldt Showers Pass. Comment
  UCD66724  Gastridium phleoides S. S. Tillett 1956-7-6 609 Humboldt S. slope along Bar Shanty Road, 5 mi. from Orleans. 487 Comment
  CAS-BOT-BC56267  Gaultheria ovatifolia Joseph P. Tracy 1939-7-9 16320 Humboldt Bald Mountain; at Lake Prairie 1066 Comment
  HSC22505  Gaultheria shallon J. R. Eichelberger 1964-5-5 68 Humboldt N side of the Mad River at the entrance to Azalea State Reserve Comment
  RSA467233  Gaultheria shallon M. B. Dunkle 1936-8-20 233 Humboldt Hupa Mts. Road Orick to Klamath River. Comment
  SEINET2028836 Image available Gaultheria shallon Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15251 Humboldt 2 miles north of Fortuna Comment
  RSA95762  Gaultheria shallon E. K. Balls 1954-4-7 19001 Humboldt 64 miles from Bluff Creek on Hwy 299 from Willow Creek to Arcata. Origin of material: seed coll. by E.K. Balls, July 11, 1949. 152 Comment
  HSC102921  Gayophytum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1015 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC55150  Gayophytum diffusum subsp. parviflorum G. L. Clifton, Griswold 1979-8-1 12087 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  JEPS27602  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-7-26 12919 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  JEPS64791  Genista monspessulana W. L. Jepson 1936-8-11 17869 Humboldt Philipsville South Fork Eel River Comment
  RSA246869  Gentiana sceptrum Robert F. Thorne, P. C. Everett 1965-8-9 35288 Humboldt Big Lagoon. 3 Comment
  UC1198643  Gentiana sceptrum Joseph P. Tracy 1938-9-25 16166 Humboldt Lake Prairie Bald Mountain 1066 Comment
  UC1197407  Geranium dissectum Joseph P. Tracy 1936-6-9 14880 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  HSC78962  Geranium dissectum L. P. Janeway, K. Berg 1984-4-11 723 Humboldt N Spit of Humboldt Bay, turnout along Samoa Rd., across from boat ramp just N of Coast Guard Station 3 Comment
  CDA43207  Geranium molle Richard R. Halse 2015-3-26 9382 Humboldt Eureka; by a Texaco station near 3543 Broadway St. ((U.S. Highway 101) and its intersection with McCullens Ave. Comment
  HSC99248  Geranium molle T. Beck 1963-4-27 42 Humboldt Camp Bauer, Korbel Comment
  UCD103408  Geranium molle Joseph M. DiTomaso 1976-3-28 346 Humboldt Samoa Cookhouse in Samoa. Comment
  RSA0029454  Geranium oreganum Volney Rattan 1882-06 s.n. Humboldt Van Dusen [Van Duzen] Hills. Comment
  UC166035  Geranium pusillum Joseph P. Tracy 1906-7-4 2520 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 60 Comment
  HSC12713  Geranium retrorsum M. J. Athey 1970-11-15 2 Humboldt In front of house in Westhaven, along Havenway, Trinidad Comment
  HSC12777  Geranium retrorsum Jana Kattenhorn 1970-10-24 140 Humboldt Arcata, HSU campus, S of Harpst St. Comment
  HSC63005  Geranium retrorsum M. Dean Griswold Jr. 1979-5-30 95 Humboldt N side of Samoa Blvd. Comment
  CAS-BOT-BC457032  Geum macrophyllum Joseph P. Tracy 1932-7-14 10540 Humboldt Corral Prairie, Trinity Summit 1524 Comment
  HSC18645  Geum macrophyllum E. W. Styskel 1963-5-19 37 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 305 Comment
  HSC73561  Gilia capitata Gail Newton 1980-7-14 1499 Humboldt Near Last Chance Ridge. 1219 Comment
  SEINET12278778  Gilia capitata L. K. Henry 1971-1 s.n. Humboldt along Rt 36, 2 mi E of Dinsmore in Six Rivers National Forest Comment
  BLMAR590  Gilia capitata subsp. capitata Jennifer Wheeler 2010-7-13 590 Humboldt King range, along Panther Gap Road 792 Comment
  UC604650  Gilia capitata subsp. pacifica Joseph P. Tracy 1938-6-17 15962 Humboldt s of point Cape Mendocino (near ocean shore); s of point of Cape Mendocino 3 Comment
  HSC100592  Gilia grandiflora Carl C. Marshall Jun 1886 314 Humboldt Vicinity of Hoopa. Comment
  HSC16988  Gilia millefoliata L. H. Myers 1963-5-13 14 Humboldt W of Lanpheres Rd., Mad River slough area Comment
  HSC90478  Gilia millefoliata Jean Hanson 1981-5-10 131 Humboldt Indian Island, Humboldt Bay, Eureka, W end of island Comment
  UC906684  Gilia tricolor subsp. tricolor Joseph P. Tracy 1942-5-16 17340 Humboldt Garberville 152 Comment
  CAS-BOT-BC266491  Githopsis diffusa L. R. Abrams 1918-6-16 7176 Humboldt Willow Creek Comment
  HSC73569  Githopsis specularioides Gail Newton 1980-7-14 1506 Humboldt Near Last Chance Ridge. 1219 Comment
  UC162686  Glechoma hederacea Joseph P. Tracy 1911-7-7 3382 Humboldt 3 mi nw Willow Creek junction with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  RSA21037  Glehnia littoralis subsp. leiocarpa C. B. Wolf 1937-6-18 8906 Humboldt Centerville Beach. 3 Comment
  HSC10076  Glyceria X occidentalis J. A. Waller 1965-5-2 32 Humboldt Mud flats off of Samoa Comment
  HSC93766  Glyceria declinata Gordon Leppig 1996-5-5 329 Humboldt Arcata, Healthsport parking lot of Union St. 2 Comment
  UC183531  Glyceria elata Joseph P. Tracy 1908-6 2770 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD66776  Glyceria occidentalis A. A. Beetle; J. P. Tracy, G. L. Stebbins Jr. 1942-6-2 3461 Humboldt Loleta Swamp, south of Eureka. Comment
  SEINET7292868 Image available Glyceria occidentalis Richard W. Pohl 1963-1 9450 Humboldt Korbel Comment
  SEINET11849375  Gnaphalium japonicum J. P. Tracy 1949-1 18591 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  UC164897  Gnaphalium palustre Joseph P. Tracy 1909-7-18 3024 Humboldt sand dunes of Ocean Beach; Northern Coast Region, , Humboldt Bay Comment
  HSC39939  Goodyera oblongifolia Linda M. Barker 1976-8-24 1679 Humboldt 3 mi. W of Arcata Comment
  UC1225875  Goodyera oblongifolia Joseph P. Tracy 1947-8-24 17907 Humboldt near Box Camp (Trinity Summit); Trinity Summit 1524 Comment
  UC179961  Goodyera oblongifolia Joseph P. Tracy 1914-9-6 4624 Humboldt between High Prairie and Snow Camp (Northern Coast Ranges, Bald Mountain); Northern Coast Ranges, Bald Mountain 1219 Comment
  CAS-BOT-BC304754  Grindelia hirsutula H. E. Parks 1941-8-1 24190 Humboldt Big Lagoon Comment
  UC1347201  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt salt marsh bordering Humboldt Bay at Arcata Arcata (region of type locality) Comment
  UC725494  Grindelia hirsutula A. A. Heller 1923-7-7 13764 Humboldt s of Garberville (near the s fork of the Eel River) Comment
  RSA249328  Hackelia bella D. E. Anderson, Thomas Nelson, S. Dowty 1972-6-13 5571 Humboldt Westward lower slopes of Black Lassic near Trinity County line 1585 Comment
  HSC39985  Hedera helix Linda M. Barker 1976-9-3 1687 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  CAS-BOT-BC306616  Helenium bigelovii Doris K. Kildale 1925-7-26 1057 Humboldt Christmas Prairie - Bald Mt. Comment
  RSA246777  Helenium bolanderi R. F. Thorne, Percy C. Everett 1965-8-9 35286 Humboldt Big Lagoon. 3 Comment
  UC175963  Helenium bolanderi Joseph P. Tracy 1912-7-24 3808 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC175986  Helenium bolanderi J. P. Tracy 1912-7-22 3792 Humboldt near Loleta 91 Comment
  CAS-BOT-BC309414  Helenium puberulum Doris K. Kildale 1928-7-29 5921 Humboldt Mouth of Bear River at Capetown Comment
  HSC25071  Heliotropium curassavicum var. oculatum R. W. Becking 1970-10-3 Humboldt Stone Lagoon near Orick Comment
  HSC6065  Helminthotheca echioides D. E. Anderson 1963-10-16 2884 Humboldt Jacoby Creek Rd. Comment
  HSC97359  Hemitomes congestum John DeMartini 1975-7-2 Humboldt Azalea Ave. Maw property, McKinleyville. Bulk Collection 81 Comment
  CAS-BOT-BC310074  Hemizonella minima Joseph P. Tracy 1930-7-16 8958 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  HSC103324  Hemizonella minima Erin Lonergan, Benjamin Hart 2007-6-4 1 Humboldt Coldsprings Camp, 6.5 mi. S of Hwy. 299 on Forest Service Road NF1. 1372 Comment
  SEINET10313942  Hemizonia congesta Unknown 1966-6-15 2091 Humboldt Humboldt County Comment
  HSC35622  Hemizonia congesta subsp. clevelandii Thomas W. Nelson, B. Reinhardt 1975-7-30 2123 Humboldt Beside private road to Pilot Rock Comment
  UC1173664  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1939-8-10 16400 Humboldt Kneeland Prairie 762 Comment
  UC249806  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1923-7-4 6529 Humboldt Valley of South Yeager Creek Northern Coast Ranges, Valley of South Yeager Creek 762 Comment
  UC495619  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1931-6-28 9598 Humboldt lower foothills of its nw slope Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  RSA21658  Hemizonia tracyi C. B. Wolf 1937-6-14 8813 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC91938  Heracleum maximum E. Mackey 1987-3-1 Humboldt Patrick's Point State Park, Palmer's Point Comment
  RSA0075926  Heterotheca oregona S. K. Harris 1938-8-24 881 Humboldt Sand of Eel River, near Fernbridge. Comment
  CAS-BOT-BC311080  Heterotheca oregona var. rudis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC71595  Hieracium albiflorum M. A. Baker 1980-6-26 2406 Humboldt Near Sims Creek 610 Comment
  HSC99543  Hieracium albiflorum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 208 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  BLMAR227  Hieracium albiflorum Jennifer Anthony-Wheeler 1996-7-11 227 Humboldt N.Dobbyn creek, common throughout the forest floor 1005 Comment
  HSC100438  Hieracium albiflorum Carl C. Marshall Jun 1886 259 Humboldt Near Hoopa. Comment
  HSC98116  Hieracium albiflorum Cara Witte 2007-6-27 371 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Near intersection with 4N32B 1516 Comment
  HSC57977  Hieracium greenei G. L. Clifton, Griswold 1979-7-31 11701 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC74490  Hieracium greenei M. A. Baker 1980-7-24 3209 Humboldt Near Orleans Mtn. 1625 Comment
  HSC44090  Hieracium greenei Thomas W. Nelson, Jane P. Nelson 1977-8-6 3714 Humboldt Along the lower S slope of Mt. Lassic (Signal Peak) 1494 Comment
  CAS-BOT-BC316005  Hieracium nudicaule Joseph P. Tracy 1937-8-7 15620 Humboldt Bald Mt. 914 Comment
  UC1103736  Hierochloe occidentalis Joseph P. Tracy 1921-3-20 5423 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  HSC59570  Hippuris vulgaris Rick Lundquist 1979-5-18 98 Humboldt Clam Beach Ponds 0 Comment
  HSC10142  Holcus lanatus R. I. Bonn 1965-5-9 50 Humboldt 4 miles W of Arcata on Lanphere Rd. Comment
  SEINET200828 Image available Holcus lanatus J. P. Tracy 1914-9-13 4626 Humboldt Eureka 0 Comment
  UC922019  Holcus lanatus Joseph P. Tracy 1949-7-6 18330 Humboldt Eureka 30 Comment
  HSC64190  Holodiscus discolor J. O. Sawyer, M. A. Ericksen 1979-6-23 3378 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  JEPS45041  Holodiscus discolor W. L. Jepson 1902-7-29 2125 Humboldt Willow Creek; Three Creeks; Expedition from Ukiah to the Hupa Indian Reservation; Willow Creek to Three Creeks, near summit 914 Comment
  LA83708  Holodiscus discolor O. H. Kappler; 1946-7-24 1372 Humboldt Humboldt Bay, close to beach Comment
  CAS-BOT-BC281264  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1932-7-10 10389 Humboldt Klamath Mountains, Trinity Summit. At Corral Prairie 1524 Comment
  HSC70402  Hordeum marinum subsp. gussoneanum M. A. Baker 1980-6-7 1843 Humboldt Near Ammon Creek 732 Comment
  UC14220  Horkelia californica subsp. dissita Chestnut and Drew 1888-5-1 Humboldt Grouse Creek Comment
  UC659403  Horkelia tridentata subsp. flavescens Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2613 Humboldt near Eureka; Larrabee Valley 762 Comment
  HSC74130  Horkelia tridentata var. flavescens R. York 1980-5-23 616 Humboldt Near Buck Mtn. 1524 Comment
  CAS-BOT-BC537899  Horkelia tridentata var. flavescens D. E. Anderson 1972-6-20 s.n. Humboldt Little Van Duzen River Comment
  HSC96952  Horkelia tridentata var. flavescens Whitney Meier, Elizabeth Kimbrough 2007-6-11 3 Humboldt Cold Springs Camp 11.9 mi. S of Hwy. 299 on USFS Rd. NF 1 Comment
  SD113612  Hosackia crassifolia var. crassifolia Darley F. Howe 1962-5-22 3305 Humboldt 4.3 miles east of Orick on Bald Mountain Road 609 Comment
  HSC102016  Hosackia oblongifolia var. oblongifolia M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 917 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC99466  Hosackia oblongifolia var. oblongifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 120 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC57649  Hydrophyllum occidentale G. L. Clifton, Griswold 1979-7-25 10819 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC35519  Hydrophyllum occidentale W. C. Blasdale 1896-6-6 Humboldt McBride's Comment
  HSC74430  Hypericum anagalloides Gail Newton 1980-8-10 2060 Humboldt Near Blake Mtn. 1707 Comment
  HSC99506  Hypericum anagalloides K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 166 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-BC411326  Hypericum calycinum Robert F. Thorne; P. Everett 1965-8-9 35315 Humboldt Clam Beach County Park 3 Comment
  UC35071  Hypericum formosum var. scouleri Chesnut and Drew 1888-7-30 Humboldt Grouse Creek Comment
  CAS-BOT-BC401237  Hypericum perforatum Ira L. Wiggins 1930-7-22 4687 b Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  UC1198401  Hypericum perforatum Joseph P. Tracy 1933-11-12 13117 Humboldt along S. Fork Eel R. Miranda; S. Fork Eel R., Miranda 121 Comment
  UC165829  Hypericum perforatum Joseph P. Tracy 1911-7-9 3478 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC166089  Hypochaeris glabra Joseph P. Tracy 1911-5-27 3193 Humboldt Comment
  CAS-BOT-BC311432  Hypochaeris radicata Alice Eastwood 1923-8-16 12332 Humboldt Carlotta Comment
  HSC79460  Hypochaeris radicata Kenneth Clark 1980-6-14 676 Humboldt On western slope above Dead Man's Gulch (near parking access) 145 Comment
  CAS-BOT-BC206845  Iliamna latibracteata C. B. Wolf 1931-8-28 2367 Humboldt Redwood Highway, 3 miles north of Orick, Davison's Ranch on Prairie Creek 60 Comment
  HSC99523  Iliamna latibracteata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 186 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM205521  Iliamna latibracteata F. W. Peirson 1923-7-11 s.n. Humboldt Between Eureka and Crescent City Comment
  UC668129 Image available Iliamna latibracteata Joseph P. Tracy 1938-8-14 10104 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
Read comments
Feb 27 2012
  UC1103805  Ionopsidium acaule Joseph P. Tracy 1933-3-12 10919 Humboldt Ferndale, St. Mary's Cemetery Ferndale; North Coast Ranges, , St. Mary's Cemetery 15 Comment
  HSC55330  Ipomopsis aggregata Griswold, Butler 1979-7-12 7170 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC13868  Iris douglasiana K. P. St. John 1965-4-3 9 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  UCSC000156  Iris douglasiana H. L. Person 1931-7-30 s.n. Humboldt Eureka, Fieldbrook Comment
  UC1196376  Iris macrosiphon Joseph P. Tracy 1935-7-14 14067 Humboldt Grouse Mountain 1524 Comment
  RSA135818  Iris purdyi E. K. Balls 1957-5-26 22607 Humboldt 0.3 miles northeast of Harris on road to Alder Point 762 Comment
  UCD138800  Iris purdyi R. N. Raynor 1935-2-22 s.n. Humboldt Fort Seward. Comment
  HSC45310  Iris tenax subsp. klamathensis R. York 1978-5-11 166 Humboldt Along logging road 4.5 mi. from Orleans 640 Comment
  HSC66486  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 438 Humboldt Ishi Pishi Rd., 1.7 mi. S of intersection with FS Rd. 11N11, Orleans 213 Comment
  SEINET3875940  Iris tenuissima Thomas Nelson, James Nelson 1973-5-28 935 Humboldt Mckeown Ranch north of Dinsmore.; 0 Comment
  HSC79260  Iris tenuissima T. Jimerson, J. Pageau 1979-5-1 439 Humboldt 0.2 mi. S of Hwy. 96 on Ishi Pishi Rd., Orleans Comment
  RSA273404  Isatis tinctoria J. P. Smith, J. O. Sawyer 1974-6-2 7649 Humboldt Below Berry Summit on old State Route 299. 762 Comment
  CAS-BOT-BC112454  Isolepis cernua R. Becking 1985-5-5 s.n. Humboldt North Spit; US Coast Guard Dunes. 500-700 ft NE from light beacon at base of North Jetty. Comment
  HSC5881  Jaumea carnosa David K. Smith 1968-11-9 55 Humboldt Along E edge of Humboldt Bay, 1 mi. S of Arcata Comment
  HSC83037  Jaumea carnosa A. L. Eicher 1985-8-17 Humboldt Marsh bordering Humboldt Bay, 0.2 mi. S of the mouth of Jacoby Creek. 1 Comment
  HSC13983  Juncus balticus subsp. ater S. R. Johnson 1965-5-2 52 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC13995  Juncus bufonius D. E. Anderson 1961-9-9 1786 Humboldt Along Hwy. 101 Comment
  HSC14098  Juncus bufonius var. occidentalis H. E. Parks, J. P. Tracy 1935-6-16 11273 Humboldt Buck Mt., lower NW slopes 793 Comment
  UC1152110  Juncus covillei Joseph P. Tracy 1934-7-14 13401 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  RSA70280  Juncus covillei F. W. Peirson 1923-7-9 3666 Humboldt Humboldt County State Park on Eel River, northern California. Comment
  HSC74671  Juncus effusus subsp. pacificus Gail Newton 1981-8-5 2360 Humboldt Near Bug Creek, E Fork. 820 Comment
  POM87662  Juncus ensifolius Le Roy Abrams, Rimo C. Bacigalupi 8286 Humboldt Big Lagoon. South of Orick. Comment
  UC249745  Juncus ensifolius Joseph P. Tracy 1924-8-31 6849 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 91 Comment
  UC1103055  Juncus ensifolius Joseph P. Tracy 1900-9-9 947 Humboldt near mouth of Yager Creek; Northern Coast Ranges 60 Comment
  UC1152095  Juncus ensifolius Joseph P. Tracy 1937-7-25 15563 Humboldt 6 mi ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC74174  Juncus exiguus M. A. Baker 1980-7-22 3123 Humboldt Near Grogan Hole. 1676 Comment
  JEPS49053  Juncus exiguus Hilda W. Grinnell 1932-7-22 43 Humboldt near Blake Lookout (below and s of U.S.G.S. signal rock); South Fork Mt. 1737 Comment
  RSA168868  Juncus falcatus var. falcatus Joseph P. Tracy 1938-7-6 16019 Humboldt Big Lagoon Comment
  JEPS63872  Juncus hesperius Henry Melde 1902-2-8 Humboldt Eureka Comment
  UC184198  Juncus kelloggii Joseph P. Tracy 1914-5-14 4431 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC63849  Juncus laccatus M. A. Baker 1979-6-27 918 Humboldt Comment
  HSC90686  Juncus lescurii Gail Newton 1982-5-31 3553 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC90770  Juncus lescurii Gail Newton 1982-6-10 3608 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC23804  Juncus lescurii Tim Baroni 1971-6-26 69 Humboldt Out the Samoa Peninsula just opposite the Georgia Pacific pulp mill Comment
  UC1152001  Juncus occidentalis Joseph P. Tracy 1937-8-3 15609 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  UC1103046  Juncus phaeocephalus Joseph P. Tracy 1921-7-10 5854 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC1601806  Juncus phaeocephalus Harley P. Chandler May 1901 1123 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC1152147  Juncus phaeocephalus var. paniculatus Joseph P. Tracy 1938-7-24 16086 Humboldt corner of Pacific and A Streets Eureka Comment
  RSA44475  Juncus tenuis Henry M. Pollard 1948-7-21 s.n. Humboldt Near Orleans. Comment
  HSC98517  Juncus tenuis Cara Witte 2007-6-28 382 Humboldt FS Road 5N10. Approximately 0.5 mi E of intersection with National Forest 1. 1426 Comment
  CAS-BOT-BC81147  Juniperus occidentalis Copeland 1903-7-4 3545 Humboldt Klamatha Comment
  SEINET2031088 Image available Kalmia polifolia Joseph P. Tracy 1935-1 14261 Humboldt Trinity Summit; meadows at Water Dog Lakes 1829 Comment
  UC1225905  Kalmia polifolia subsp. microphylla Joseph P. Tracy 1942-6-23 17262 Humboldt Trinity Summit, at Water Dog Lakes Water Dog Lakes; Trinity Summit, Water Dog Lakes 1889 Comment
  CAS-BOT-BC235886  Keckiella corymbosa Doris K. Kildale 1927-8-7 3862 Humboldt Kneeland Prairie 762 Comment
  UC146235  Keckiella corymbosa Joseph P. Tracy 1908-7-31 2935 Humboldt Bridgeville Northern Coast Ranges (rocks along Van Duzen River) 152 Comment
  RSA244957  Kickxia elatine David Johnson 1973-11-15 s.n. Humboldt Growing along West End Rd. ca 50 yds. north of the highway 101 overpass. Beside the railroad tracks. Comment
  UC50517  Koeleria macrantha Joseph Burtt Davy and Walter C. Blasdale 1899-6-12 5478 Humboldt Elk Prairie Comment
  RSA170203  Lactuca canadensis Joseph P. Tracy 1950-9-22 19368 Humboldt Klamath River, near Slate Creek. Below Orleans 8 miles. 122 Comment
  JEPS38993  Lagophylla ramosissima W. L. Jepson 1932-8-8 16482 Humboldt Canoe Creek; Grasshopper Peak 1066 Comment
  UCSB45118  Lamium amplexicaule Council, Michael 1978-3-11 Humboldt Southwest corner of Cathedral Oaks and Los Caneros 10 Comment
  HSC77914  Landoltia punctata Daniel V. Richards 1981-8-20 103 Humboldt N Clam Beach Pond, E side of Hwy. 101 near Cranell exit. Comment
  HSC5135  Lasthenia californica G. N. Bos 1965-5-15 261 Humboldt 3 mi. W of Berry Summit along U.S. 299 610 Comment
  CAS-BOT-BC352930  Lasthenia glaberrima S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3439 Humboldt Northwest slopes of Buck Mountain. 822 Comment
  CAS-BOT-BC123327  Lathyrus biflorus T. W. Nelson; James L. Nelson 1980-6-10 5432 Humboldt Blocksburg Quadrangle. NE slope of Red Mountain. 1371 Comment
  RSA53806  Lathyrus latifolius H. M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  HSC40951  Lathyrus littoralis Linda M. Barker 1976-6-1 1560 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  POM72742  Lathyrus littoralis P. A. Munz 1925-6-21 9892 Humboldt Clam Beach, 14 miles N of Eureka. Comment
  UC249527  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1922-5-29 6062 Humboldt South Yager Creek Valley Northern Coast Ranges 762 Comment
  UC931687  Lathyrus polyphyllus C. L. Hitchcock 1949-6-8 19090 Humboldt ca 10 mi w Willow Creek (near Highway 299) Comment
  UC160919  Lathyrus torreyi Joseph P. Tracy 1909-8-1 3062 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC23457  Lathyrus tracyi D. E. Anderson 1965-5-1 3561 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  UC1199067  Lathyrus vestitus Joseph P. Tracy 1937-6-20 15359 Humboldt s of Ferndale; Wild Cat Ridge 304 Comment
  JEPS13617  Layia carnosa Joseph P. Tracy 1932-5-16 10106 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC34175  Layia carnosa Harley P. Chandler May 1901 1150 Humboldt Humboldt Bay 3 Comment
  HSC100701  Layia carnosa Carl C. Marshall May 1885 39 Humboldt Peninsula. Comment
  CAS-BOT-BC321697  Layia gaillardioides Joseph P. Tracy 1936-6-9 14875 Humboldt Bear River Ridge 609 Comment
  HSC59442  Lemna minor Kenneth Clark 1979-4-21 148 Humboldt Off of Cranell Rd., 50 ft. E of Hwy. 101 Comment
  SD88457  Leontodon saxatilis subsp. longirostris Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  CAS-BOT-BC88801  Lepidium campestre M. S. Jussel 1931-5-2 s.n. Humboldt 20 miles north of Garberville. Comment
  CHSC42328  Leptosiphon androsaceus Victor Duran 1933-5-10 3403 Humboldt Near Blocksburg. Comment
  HSC37507  Leptosiphon androsaceus J. D. Ackerman, A. M. Montalvo 1975-6-22 486 Humboldt 6.4 mi. W of Dinsmore, Hwy. 36 Comment
  UC535713  Leptosiphon latisectus Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove 121 Comment
  UC1537470  Leptosiphon latisectus Gordon H. True Jr. 1936-5-11 459 Humboldt 12 mi w Miranda (e slope of Elk Ridge); Elk Ridge 457 Comment
  CAS-BOT-BC341823  Lessingia nemaclada Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  BLMAR147  Leucanthemum vulgare Donald Hazlett 1994-6-7 147 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  SEINET4691296 Image available Leucanthemum vulgare Joseph P. Tracy 1918-1 5080 Humboldt Northern Coast Range; Around Humboldt Bay; Humboldt Hill 152 Comment
  UC1199275  Leucanthemum vulgare Joseph P. Tracy 1918-7-21 5080 Humboldt around Humboldt Bay; Humboldt Hill 152 Comment
  HSC63201  Lewisia leeana M. A. Baker 1979-6-27 929 Humboldt Head of Grogan Hole at the head of Oregon Creek Comment
  RSA273333  Lewisia triphylla Thomas W. Nelson, Jane P. Nelson 1976-6-15 2725 Humboldt [Unspecified] 1585 Comment
  CAS-BOT-BC272246  Leymus triticoides David D. Keck 1944-7-11 5496 Humboldt Cape Mendocino 3 Comment
  JEPS81114  Ligusticum apiifolium Joseph M. DiTomaso 1980-6-27 1623 Humboldt 6 mi. from Orleans (on Gasquet-Orleans Rd.) Comment
  HSC90663  Lilaeopsis occidentalis Gail Newton 1982-6-10 3636 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC35939  Lilium columbianum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2032 Humboldt Just E of Redwood National Park along Bald Hills Rd. Comment
  CAS-BOT-BC508392  Lilium columbianum Doris K. Kildale 1927-7-10 3739 Humboldt Gans Prairie, Bald Hills Road Comment
  HSC89438  Lilium columbianum P. A. Daly 1984-6-16 28 Humboldt Open bluffs of Trinidad Head trail 61 Comment
  RSA130333  Lilium columbianum Albert M. Vollmer, L. Beane 1953-07 121 Humboldt Humboldt County Comment
  CAS-BOT-BC130684  Lilium occidentale M. Louise Hutchinson 1913-6-1 s.n. Humboldt Eureka Comment
  UC666950  Lilium pardalinum Joseph P. Tracy 1938-7-4 15994 Humboldt Valley of South Yager Creek 762 Comment
  HSC58026  Lilium pardalinum subsp. pardalinum G. L. Clifton 1979-7-31 11837 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC132969  Lilium rubescens Ella Dales Cantelow 1939-6-4 2443 Humboldt 6 1/10 mi. s. of Bridgeville on road from Alder Point Comment
  HSC63174  Lilium rubescens M. A. Baker 1979-7-10 1020 Humboldt S of Dragsaw Spring along USFS Rd. 13N01 Comment
  HSC97634  Limnanthes douglasii subsp. nivea Cara Witte 2007-6-4 191 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  BLMAR427  Limonium californicum Clara Sander 2004-9-27 427 Humboldt South Spit, east side of road 4 Comment
  HSC16906  Limonium californicum C. B. Wolf 1927-8-28 1187 Humboldt Eureka Bay, on the road to Arcata Comment
  HSC95099  Limonium californicum Andrea Pickart 2002-6-27 121 Humboldt Mad River Slough and Dunes, N of parking area at N end of access road. 0 Comment
  UC908625  Linanthus acicularis Joseph P. Tracy 1927-5-15 8033 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC907986  Linanthus androsaceus Joseph P. Tracy 1936-6-9 14879 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC1198590  Linanthus androsaceus Joseph P. Tracy 1927-6-5 8120 Humboldt Bridgeville 198 Comment
  UC1198569  Linanthus bicolor Joseph P. Tracy 1911-6-25 3255 Humboldt Eureka Northern Coast Ranges 0 Comment
  JEPS58273  Linanthus bolanderi Lincoln Constance 1934-6-15 890 Humboldt few yds s Lookout (on summit of ridge of Grasshopper); South Fork Eel River, Bull Creek Region, Grasshopper Comment
  JEPS58445  Linanthus harknessii Joseph P. Tracy 1933-7-25 12832 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  JEPS11330  Linaria vulgaris Milo S. Baker 1923-8-4 171 Humboldt Stone Lagoon; North Coast, Stone Lagoon Comment
  CAS-BOT-BC416392  Linnaea borealis subsp. longiflora H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  HSC46136  Linum bienne J. P. Smith 1971-10-6 4964 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC46152  Linum bienne J. P. Smith 1973-5-26 6828 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC69790  Linum bienne R. Kalal 1979-5-8 59 Humboldt 7th St. and Union Ave., in Arcata. 18 Comment
  HSC79358  Linum bienne Kenneth Clark 1980-4-18 595 Humboldt Above Dead Man's Gulch. 168 Comment
  HSC97615  Linum bienne Cara Witte 2007-6-4 192 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  SDSU8125  Linum bienne D. F. Howe 1961-8-1 Humboldt 9 miles north of Arcata on #101. Comment
  HSC48978  Listera caurina Rudolf W. Becking 1979-7-15 Humboldt Fish Lake Comment
  HSC75160  Listera caurina James Lenihan 1982-5-30 Humboldt Redwood National Park. Little Lost Man Creek drainage 2/3 of way up to where creek forks 457 Comment
  HSC73409  Listera cordata var. nephrophylla Bruce Potter, Leslie Sieburth, Susan Ahrens 1981-4-19 653 Humboldt 229 Comment
  SEINET13953004 Image available Lithocarpus densiflorus J. Sandborg, F. Sandborg 1968-1 58 Humboldt Bluff Creek near Notice Creek 792 Comment
  HSC20225  Lithophragma affine D. E. Anderson 1963-5-19 2468 Humboldt Kneeland Area Comment
  UC1196498  Lithophragma affine Joseph P. Tracy 1921-4-24 5433 Humboldt Phillipsville Flat Northern Coast Ranges, South Fork of Eel River (South Fork of Eel River) 91 Comment
  HSC31443  Lithophragma campanulatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5561 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  UC673076  Lobularia maritima Joseph P. Tracy 1940-10-5 16750 Humboldt near beach on isthmus leading to Trinidad Head Trinidad 3 Comment
  UC50707  Lolium multiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-6-17 5606 B Humboldt Arcata Comment
  HSC10309  Lolium perenne E. W. Styskel 1964-4-25 69 Humboldt Alongside College Elementary School on Humboldt State College Campus, Arcata. Comment
  HSC39043  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, Jane P. Nelson 1976-5-31 2657 Humboldt County line, S of meadow along 5E27 just N of its junction with 1S07 1524 Comment
  HSC82019  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, James Nelson 1980-6-10 5396 Humboldt Along Swayback Ridge 4-wheel drive road, 1.25 mi. S of junction with Forest Service road. 1494 Comment
  HSC74190  Lomatium dissectum var. dissectum M. A. Baker 1980-7-23 3151 Humboldt Near Orleans Mtn. 1859 Comment
  HSC21516  Lomatium dissectum var. dissectum H. E. Parks, J. P. Tracy 1935-6-16 11278 Humboldt Buck Mtn. 915 Comment
  UC1167734  Lomatium macrocarpum Peter Raven with R. Snow 1958-7-20 13637 Humboldt 2.0 mi. s. junction of Titlow Hill and Friday Ridge rds. (near Grouse Mt.) Comment
  CAS-BOT-BC211199  Lomatium tracyi Joseph P. Tracy 1930-7-10 8869 Humboldt Brannan Mountain 1219 Comment
  HSC98971  Lomatium vaginatum Cara Witte 2007-6-4 193 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC57688  Lonicera conjugialis G. L. Clifton, Terry Griswold 1979-7-25 10907 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC58297  Lonicera conjugialis Walter Overton, Marvin Butler 1979-8-2 12570 Humboldt Near Bret Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC240477  Lonicera hispidula Doris K. Kildale 1927-7-3 3641 Humboldt Willow Creek Flat 152 Comment
  SDSU2899  Lonicera involucrata D. F. Howe 1961-8-1 3104 Humboldt 6 miles north of Trinidad on #101. Comment
  CAS-BOT-BC241485  Lonicera involucrata var. ledebourii Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CAS-BOT-BC241494  Lonicera involucrata var. ledebourii Carl B. Wolf 1927-8-22 770 Humboldt Big Lagoon Comment
  HSC23144  Lonicera involucrata var. ledebourii Thomas W. Nelson 1970-10-17 238 Humboldt Big Lagoon Comment
  HSC31644  Lonicera involucrata var. ledebourii Glenn McGourty 1974-6-1 78 Humboldt Comment
  HSC3921  Lonicera involucrata var. ledebourii J. E. Lankila 1962-5-6 3 Humboldt W bank of Eel River across form Shively about 500 feet from Bear Creek N Comment
  HSC59044  Lonicera involucrata var. ledebourii Thomas Wood 1979-4-20 123 Humboldt Along frontage Rd., parallel and E of Hwy. 101 at Patrick Creek Drive intersection, S of Patrick Creek. 6 Comment
  SEINET12154181  Lotus aboriginus J. P. Tracy 1949-1 18321 Humboldt nr Boynton PRairie 12miSE of Arcata Comment
  HSC96480  Lotus corniculatus Gordon Leppig 1997-8-3 644 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  HSC98253  Lotus corniculatus J. W. Johnson 1961-8-23 1049 Humboldt Arcata, Lanphere farm, Samoa Peninsula Comment
  RSA20779  Lotus crassifolius Carl B. Wolf 1937-8-13 9243 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  HSC98811  Lotus crassifolius var. crassifolius Cara Witte 2008-6-18 747 Humboldt Horse Mountain Botanical Area. Approximately 1 mile east of junction 6N36 and 6N36A. 1394 Comment
  HSC97945  Lotus crassifolius var. crassifolius Cara Witte 2007-6-26 357 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  SEINET12158899  Lotus denticulatus J. P. Tracy 1934-1 13219 Humboldt Horse Mountain 1433 Comment
  UC15583  Lotus formosissimus Harley P. Chandler May 1901 1200 Humboldt Humboldt Bay Northern Coast Ranges 30 Comment
  HSC44376  Lotus humistratus Thomas W. Nelson, Jane P. Nelson 1977-6-19 3512 Humboldt SW of Alder Springs along Rd. 2S08. 1524 Comment
  JEPS55515  Lotus humistratus Mrs. M. H. Manning 1901-5 69 Humboldt near Hupa Comment
  UC1052456  Lotus humistratus H. E. Parks Aug 1941 24183 Humboldt Little River State Park Comment
  UC160992  Lotus purshianus var. purshianus Joseph P. Tracy 1911-8-27 3536 Humboldt Eureka Northern Coast Region 0 Comment
  UC864751  Lotus purshianus var. purshianus Ira L. Wiggins 1930-7-22 4689 Humboldt between Blue Lake and Willow Creek (along bank of Redwood Creek); Redwood Creek Comment
  JEPS55909  Lotus scoparius Lincoln Constance 1934-6-1 768 Humboldt Bull Creek road, between Dyerville Bridge and Bull Creek flat grove (mouth of Bull Creek) South Fork Eel River, Bull Creek Region 45 Comment
  RSA406270  Lotus unifoliolatus Bonnie C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  RSA183610  Lotus wrangelianus R. I. Bonn 1965-5-7 29 Humboldt Four mi els west of Arcata on Lanphere Rd. Comment
  RSA21446  Lotus yollabolliensis C. B. Wolf 1937-8-12 9210 Humboldt North Coast Range, South Fork Mountain, 0.6 miles S of Blake Lookout. 1677 Comment
  UC1223408  Lotus yollabolliensis Joseph P. Tracy 1933-7-16 12798 Humboldt near McKay Camp (near the top of South Fork Mountain); South Fork Mountain 1676 Comment
  UC495720  Lotus yollabolliensis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8945 Humboldt near Blake Lookout (along summit South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  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
  UC503012  Lupinus adsurgens Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt near Blake lookout, South Fork Mountain along summit; Northern Coast Ranges, South Fork Mountain 1737 Comment
  JEPS64896  Lupinus albicaulis Joseph P. Tracy 1923-6-19 6298 Humboldt near King's Peak (Wilder Ridge); Northern Coast Ranges 762 Comment
  JEPS85687  Lupinus albicaulis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8954 Humboldt near Blake lookout (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC146921  Lupinus albifrons var. albifrons Harley P. Chandler June, 1901 1424 Humboldt Weitchpek North Coast Ranges, Klamath River (Klamath River) 304 Comment
  HSC96074  Lupinus albifrons var. collinus J. McIntire, S. Lyon 2005-6-24 17 Humboldt FS NF1 1375 Comment
  HSC60073  Lupinus albifrons var. flumineus M. A. Baker 1978-5-6 498 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  SEINET12154367  Lupinus andersonii J. P. Tracy 1949-1 18433 Humboldt Trinity Summit. on rd from Hoopa to Box Camp nr rd to "Big Hill" turns off Comment
  CHSC19506  Lupinus arboreus Gary J. Sebbings 1970-4-18 64 Humboldt Along U.S. lol 1.0 mi north of Clam Beach exit. Comment
  CHSC68783  Lupinus arboreus Vernon Oswald 1997-6-5 8534 Humboldt North spit of Humboldt Bay, west side of New Navy Base Road. 1.0 mi south of Hwy. 255. 6 Comment
  RSA20810  Lupinus arboreus var. arboreus Carl B. Wolf 1937-9-9 9308 Humboldt Coast, 2 miles south of Cape Mendocino. 6 Comment
  HSC14801  Lupinus bicolor R. T. Forester 1963-5-6 44 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  SEINET8042134  Lupinus formosus J. P. Tracy 1904-7-4 2113 Humboldt Rgion about Humboldt Bay, bluff at Bucksport 0 Comment
  UC168984  Lupinus formosus var. formosus Joseph P. Tracy 1912-4-21 3576 Humboldt Bucksport; Northern Coast Region, Eureka, Bucksport 0 Comment
  HSC63290  Lupinus latifolius subsp. viridifolius M. A. Baker 1979-6-27 938 Humboldt Jct. of Tish Tang A Tang Creek and trail through Grogan's Hole Comment
  UC168977  Lupinus latifolius var. latifolius Joseph P. Tracy 1912-6-9 3663 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  UC503000  Lupinus latifolius var. latifolius Joseph P. Tracy 1932-7-12 10435 Humboldt open ground at Corral Prairie (Trinity Summit); Klamath Mountains, , Corral Prairie 1524 Comment
  JEPS48707  Lupinus latifolius var. latifolius Hilda W. Grinnell 1932-7-19 27 Humboldt eastern slope of So. Fork Mt. South Fork Mt.; eastern slope of So. Fork Mt. 1615 Comment
  SEINET10488747  Lupinus littoralis Charles Piper Smith 1931-8-31 Smith 4505 Humboldt Mckinleyville, sand dunes - north. Comment
  UC1223254  Lupinus littoralis Joseph P. Tracy 1938-6-16 15940 Humboldt Brainards Point, along highway between Eureka and Arcata Comment
  UC169350  Lupinus luteolus Joseph P. Tracy 1912-7-26 3871 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1197271  Lupinus nanus Joseph P. Tracy 1913-6-11 4090 Humboldt near Little Van Duzen Bridge 762 Comment
  UC1949190  Lupinus nanus Barbara Ertter with Thomas J. Delendick 1987-5-16 6923 Humboldt Vista Point just W of Berry Summit on Hwy 299, ca 15 airmiles E of Arcata; S-facing slope Comment
  JEPS65425  Lupinus polyphyllus Kate Jared Stirring 1923-6-5 Humboldt Arcata Comment
  SD42562  Lupinus polyphyllus Carl B. Wolf 1937-8-11 9144 Humboldt 0.5 mile east of Alton. 21 Comment
  RSA413832  Lupinus polyphyllus var. grandifolius Carl B. Wolf 1937-8-11 2906 Humboldt 1/2 mile east of Alton. 21 Comment
  SEINET12165817  Lupinus propinquus J. T. Vale 1988-1 s.n. Humboldt nr Petrolia Comment
  CDA5442  Lupinus rivularis D. G. Kelch 2007-7-25 7 .503 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  HSC58602  Lupinus tracyi G. L. Clifton, Griswold 1979-7-25 10843 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC57984  Luzula comosa G. L. Clifton, Griswold 1979-7-31 11718 Humboldt Near the Trinity Summit Guard Station, close to the town of Hoopa. 1804 Comment
  HSC49098  Luzula comosa J. O. Sawyer 1977-4-23 2838 Humboldt Along Bald Hills Rd. E of Hoopa Comment
  HSC96237  Luzula comosa April A. Allard, Gregory D. O'Connell 2005-6-3 2 Humboldt 19.3mi S of Hwy. 299 on NF1 1246 Comment
  CAS-BOT-BC436735  Luzula comosa var. laxa Doris Kildale Gillespie 1931-6-7 10661 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC74203  Luzula parviflora M. A. Baker 1980-7-19 3037 Humboldt Near Bret Hole 1814 Comment
  UC3007  Luzula parviflora Harley P. Chandler May, 1901 1163 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  UC302166  Luzula parviflora Joseph P. Tracy 1925-7-5 7171 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  JEPS19059  Lycopodium clavatum C. C. Marshall 1890-1 97 Humboldt Comment
  UCSC001038  Lycopodium clavatum W. Jan Rowe 1967-7-8 61 Humboldt 4.5 miles southeast of Trinidad Trinidad Comment
  HSC14221  Lycopus uniflorus H. E. Parks, J. P. Tracy 1924-8-3 6765 Humboldt Big Lagoon 6 Comment
  HSC3242  Lysichiton americanus J. W. Johnson 1962-2-26 1161 Humboldt Along Lanphere Lane, Samoa Peninsula Comment
  SEINET11810577  Madia elegans J. P. Tracy 1947-1 17827 Humboldt Horse Mountain 1067 Comment
  UC581811  Madia elegans Joseph P. Tracy 1934-8-24 13599 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC343020  Madia gracilis Joseph P. Tracy 1935-7-23 14132 Humboldt Trinity Summit. At Corral Prairie 1584 Comment
  JEPS7387  Madia gracilis Joseph P. Tracy 1932-7-13 10494 Humboldt at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC717988  Madia gracilis David D. Keck 1944-7-11 5500 Humboldt 12.3 mi se of Petrolia; Mattole River, between Upper Mattole and Honeydew Comment
  UCR123956  Madia madioides George K. Helmkamp, E. A. Helmkamp 2001-7-8 6972 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
  POM284946  Madia madioides Lyman Benson 1929-7-16 1868 Humboldt Weott Ranger Station. Comment
  UC581813  Madia sativa Joseph P. Tracy 1936-6-9 14909 Humboldt Upper Mattole Valley 121 Comment
  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
  UC1134631  Maianthemum dilatatum R. Stahelin 1933-5-17 Humboldt Arcata City Park Eureka Quad., Arcata City Park Comment
  HSC58009  Maianthemum racemosum subsp. amplexicaule G. L. Clifton 1979-7-31 11805 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC511459  Maianthemum racemosum subsp. amplexicaule Huron H. Smith 1911-6-6 3795 Humboldt Field Museum of Natural History, Vances Camp 19 Comment
  HSC79371  Maianthemum racemosum subsp. amplexicaule Kenneth Clark 1980-3-27 555 Humboldt On divide of N and S Forks of Dead Man's Gulch 122 Comment
  HSC103295  Maianthemum stellatum Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3010 Humboldt Six Rivers National Forest; ~0.3 mi. south-southeast of Cold Spring Camp; ~ 3.3 aerial mi. south-southeast of Horse Mtn. Radio Tower. 1401 Comment
  HSC56979  Maianthemum stellatum Overton, Butler 1979-7-23 9516 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  CAS-BOT-BC512772  Maianthemum stellatum Doris K. Kildale 1926-3-26 1648 Humboldt Old Fortuna Road 15 Comment
  UC565510  Malacothrix floccifera H. L. Mason 1928-7-14 4906 Humboldt near Garberville; East Fork of Eel River Comment
  CAS-BOT-BC140138  Malus fusca Doris K. Kildale 1926-7-10 2343 Humboldt Big Lagoon Comment
  RSA178549  Malus sylvestris Joseph P. Tracy 1950-4-23 18636 Humboldt Trinity River Valley, at Willow Creek. Comment
  UC275344  Malva parviflora Joseph P. Tracy 1924-10-19 6928 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  SEINET4929765  Marah fabacea Unknown 2002-8-22 90 Humboldt Along Fischer Road 0.25mi N of the Mad River. Comment
  CHSC10136  Marah oregana J. W. Johnson 1962-3-31 1412 Humboldt Along the Lanphere Lane, Samoa Peninsula, Arcata. Comment
  HSC91615  Marah oregana E. Mackey 1987-5-7 Humboldt Patrick's Point State Park, Palmer's Point, at beginning of trail to beach. Comment
  UC1198477  Marah oregana Joseph P. Tracy 1940-5-17 16548 Humboldt McClellan Mt. 762 Comment
  HSC31809  Medicago lupulina Donald Spalinger 1974-4-25 23 Humboldt Forest across from 1756 Ridgewood Dr. 122 Comment
  JEPS65511  Medicago polymorpha Lincoln Constance 1934-5-26 668 Humboldt Dyerville Bridge South Fork Eel River, Bull Creek region (s end) Comment
  UC1145125  Melica geyeri Joseph P. Tracy 1942-6-2 17099 Humboldt 2 mi n Bridgeville 609 Comment
  HSC71167  Melica harfordii Thomas W. Nelson 1977-5-30 3413 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  HSC74230  Melica harfordii M. A. Baker 1980-7-15 2981 Humboldt Near Whiting Ridge. 1341 Comment
  POM126121  Melica harfordii Joseph P. Tracy 1923-5-30 6243 Humboldt Dyerville, along Eel River from South Fork to Scotia. 61 Comment
  UC1132271  Melica harfordii H. S. Yates 1936-6-17 5721 Humboldt near Burr Valley; South Fork Pk. Quad. 914 Comment
  UC188817  Melica harfordii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 5210 Humboldt Russ Ranch Comment
  UCD88315  Melica stricta A. H. Murphy 1951-4-18 s.n. Humboldt Ft. Seward. Next to railroad right-of-way adjacent to river in shade. 182 Comment
  HSC10368  Melica subulata L. M. Malloy 1965-5-15 1 Humboldt 1 mi. E of Anderson Ranch along Canyon Creek. Comment
  UCD88616  Melica subulata August L. Hormay 1932-5-11 s.n. Humboldt Korbel. Comment
  UCD88651  Melica subulata A. H. Murphy 1951-5-18 s.n. Humboldt K. Roscoe Ranch, Upper Mattole. Comment
  UC535756  Mentha canadensis Eleanor Armstrong 1934-7-18 1127 Humboldt Richardson Grove; Sandbar 121 Comment
  RSA600662  Mentha pulegium Louis C. Wheeler 1950-8-14 6779 Humboldt Shelter Cove. Comment
  JEPS63443  Mentha spicata Joseph P. Tracy 1925-8-16 7233 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley near South Fork 182 Comment
  UC668288  Mentzelia dispersa Joseph P. Tracy 1937-7-24 15521 Humboldt Trinity Summit, Devil's Hole 1676 Comment
  HSC7850  Menziesia ferruginea subsp. ferruginea F. Morrell 1949-4-22 11 Humboldt Back Humboldt State University fish hatchery Comment
  CAS-BOT-BC322684  Microseris laciniata Lincoln Constance 1934-5-24 624 Humboldt S. slope of Lower Look Prairie, South Fork Eel River 182 Comment
  UC1199451  Microseris laciniata subsp. laciniata Joseph P. Tracy 1933-7-26 12925 Humboldt s slope Grouse Mountain (towards low creek); North Coast Ranges, s slope Grouse Mountain 1219 Comment
  HSC74187  Microseris nutans Gail Newton 1980-6-28 722 Humboldt Near Mad River Butte. 1536 Comment
  HSC6101  Microseris nutans W. K. Parks 1933-7-15 5263 Humboldt South Fork Mtn. 1677 Comment
  UC302189  Microseris nutans Joseph P. Tracy 1926-6-20 7620 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  SEINET12279136  Microsteris gracilis J. P. Tracy 1950-1 18648 Humboldt Valley of South Yager Creek 762 Comment
  HSC102111  Mimulus breweri M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1014 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC162579  Mimulus cardinalis Joseph P. Tracy 1911-7-10 3480 Humboldt tributary of Trinity River (along Willow Creek near mouth); Northern Coast Ranges 243 Comment
  HSC39160  Mimulus dentatus D. E. Anderson, J. P. Smith 1971-6-28 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  JEPS10567  Mimulus douglasii Joseph P. Tracy 1925-5-24 7012 Humboldt Kneeland Prairie 762 Comment
  UC1103337  Mimulus douglasii Joseph P. Tracy 1930-5-4 8689 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  HSC97545  Mimulus guttatus Ivy Watson 2008-9-28 31 Humboldt Beach N of river mouth, along small tributary E of sand dunes 4 Comment
  JEPS10474  Mimulus guttatus Lincoln Constance 1934-5-26 683 Humboldt s end Dyrville Bridge; South Fork Eel River, Bull Creek Region 45 Comment
  HSC20726  Mimulus guttatus H. D. Sumner 1959-7-13 Humboldt Dirt road to Hoopa 305 Comment
  HSC89591  Mimulus guttatus M. Roantree 1985-5-15 45 Humboldt E side of Trinidad Head, on slope above Trinidad Bay beach Comment
  RSA60480  Mimulus guttatus John H. Thomas 1949-6-12 896 Humboldt Along road between Orick and Martin's Ferry. 15.5 miles west of Martin's Ferry. 762 Comment
  HSC85939  Mimulus kelloggii Susan Carter, Eric May, Sarah McNaull 1987-3-7 7 Humboldt 8 mi. SSE of Salyer on Co. Rd. 447, F.S. Rd. 5N03, trail 6E23; E of South Fork of Trinity River 457 Comment
  UC1196806  Mimulus kelloggii Joseph P. Tracy 1947-4-20 17671 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1196830  Mimulus microphyllus Joseph P. Tracy 1933-8-6 12932 Humboldt Lyons Ranch Bald Hills 762 Comment
  UC582706  Mimulus nasutus Joseph P. Tracy 1927-3-27 7850 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC20790  Mimulus pilosus David Adams 1960-8-20 Humboldt Eel River; Whitlow (Sequoia) 56 Comment
  HSC56178  Mimulus primuloides G. L. Clifton 1979-8-1 12086 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC582497  Mimulus primuloides Joseph P. Tracy 1935-7-26 14258 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  HSC73738  Mimulus primuloides var. primuloides M. A. Baker 1980-7-22 3091 Humboldt Near Grogan Hole. 1676 Comment
  UC1196782  Mimulus pulsiferae Joseph P. Tracy 1933-8-30 13029 Humboldt near Clear Lake; North Coast Ranges, Grouse Mountain 1524 Comment
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Sep 10 2013
  UC668121  Minuartia douglasii Joseph P. Tracy 1935-6-23 13972 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC181090  Minuartia nuttallii var. gregaria Joseph P. Tracy 1935-7-30 14353 Humboldt Salmon Summit 1767 Comment
  HSC95189  Mitella caulescens Gordon Leppig, T. LaBanca 2003-5-12 1901 Humboldt Pacific Lumber Company land, S of Pepperwood, THP 1-03-050 HUM. 60 Comment
  UC1198867  Mitella caulescens Joseph P. Tracy 1937-7-2 15400 Humboldt Little Hors-Linto Creek Trinity Summit (head) 1371 Comment
  UC902016  Mitella diversifolia Joseph P. Tracy and Harold E. Parks 1949-6-5 11654 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC44280  Mitella ovalis Barbara Kelly 1977-4-23 305 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC303175  Mitella ovalis Joseph P. Tracy 1923-6-20 6310 Humboldt White Thorn Valley Northern Coast Ranges (banks of creek) 304 Comment
  HSC20238  Mitella ovalis D. E. Anderson 1964-2-23 2903 Humboldt 7 mi. E of Carlotta along Hwy. 36; above Van Duzen River 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
  JEPS51151  Moehringia macrophylla Lincoln Constance 1934-6-19 908 Humboldt Grasshopper Peak, near summit; Bull Creek Region, South Fork Eel River 914 Comment
  HSC64760  Moehringia macrophylla Bruce Gordon 1980-4-10 141 Humboldt Redwood National Park, 60 m NE of Bald Hills Rd., 0.4 mi. NE of jct. of Bald Hills Rd. and K&K Rd Comment
  HSC97185  Moehringia macrophylla Benjamin Hart, Erin Lonergan 2007-6-13 9 Humboldt 1 mi. E of USFS Rd. NF1 on 5N04 1524 Comment
  HSC73745  Monardella odoratissima subsp. pallida M. A. Baker 1980-7-19 2989 Humboldt Near Bret Hole. 1814 Comment
  HSC35703  Monardella sheltonii Thomas W. Nelson, B. Reinhardt 1975-7-30 2119 Humboldt Beside private road to Pilot Rock Comment
  HSC99495  Montia fontana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 155 Humboldt Near North Trinity Mtn, Government Trail, near Box Camp, Six Rivers National Forest. 1460 Comment
  UC275480  Montia fontana Joseph P. Tracy 1925-3-15 6941 Humboldt Blue slide on Van Duzen River Van Duzen River; Northern Coast Ranges, Blue slide, Van Duzen River 91 Comment
  UC275324  Montia howellii Joseph P. Tracy 1923-4-15 6187 Humboldt Redwood Creek, at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC183599  Montia linearis Joseph P. Tracy 1913-6-14 4134 Humboldt in valley of Van Duzen River (Dinsmore's Ranch, opposite Buck Mountain); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  CHSC84555  Montia parvifolia John Dittes; Josephine Guardino 2003-6-7 2003 -64 Humboldt Outer North Coast Range; ca. 2.9 air-mile northwest of Legget, ca. 5.2 air-mile southeast of Piercy, on eastern bank of South Fork Eel River. 182 Comment
  UC275280  Montia parvifolia Joseph P. Tracy 1923-6-20 6311 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  HSC17671  Montia parvifolia Doris K. Kildale 1925-6-14 671 Humboldt Yager Comment
  HSC45288  Morella californica Brad Klipfel 1974-4-27 314 Humboldt SW side of Big Lagoon. Comment
  HSC63080  Morella californica David Wheeler 1979-4-30 89 Humboldt 910 Gwinn St., McKinleyville Comment
  JEPS70782  Myosotis latifolia W. L. Jepson 1934-5-7 16685 Humboldt Dyerville Comment
  HSC31423  Myosurus minimus Rudy Becking 1974-5-5 Humboldt Samoa dunes near USCG Station Comment
  HSC13467  Myriophyllum aquaticum Anonymous 1957-5-12 148 Humboldt 1.5 mi. S of Fields Landing Comment
  HSC53978  Navarretia capillaris Griswold, Butler 1979-7-11 7052 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  UC908387  Navarretia divaricata Joseph P. Tracy 1930-7-23 9119 Humboldt Horse Mountain Northern Coast Ranges 1432 Comment
  UC162571  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1911-7-6 3365 Humboldt Mountain Slopes along road between Three Creeks and mouth Willow Creek; Northern Coast Ranges, btw Three Creeks and Willow Creek 762 Comment
  BLMAR163  Navarretia mellita Donald Hazlett 1994-6-7 163 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  POM65883  Navarretia pubescens Joseph P. Tracy 1916-6-20 4733 Humboldt Alder Point, Northern Coast Ranges 152 Comment
  SEINET202730  Navarretia pubescens Joseph P. Tracy 1950-6-23 18861 Humboldt Dobbyn Creek, 3 miles NE of Alderpoint. 213 Comment
  HSC17146  Navarretia squarrosa S. V. Thompson 1967-7-24 22 Humboldt Near Boulder Creek Comment
  UC133642  Navarretia tagetina Joseph P. Tracy 1908-6 2818 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC198633  Navarretia tagetina Joseph P. Tracy 1916-9-6 4758 Humboldt headwaters of Canoe Creek Northern Coast Ranges, Grasshopper Ridge, Canoe Creek 609 Comment
  CHSC19477  Nemophila heterophylla D. E. Anderson 1965-5-8 3650 Humboldt About 3 miles north of Willow Creek along road on east side of Trinity River. Comment
  SEINET3156479  Nemophila heterophylla D. E. Anderson 1965-5-8 3650 Humboldt About 3 miles N of Willow Creek along road on E side of Trinity River. Comment
  HSC35029  Nemophila menziesii Thomas W. Nelson, James Nelson 1975-5-24 1845 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC13589  Nemophila menziesii D. E. Anderson 1965-4-24 3532 Humboldt Along Titlow Hill Rd. Comment
  HSC13581  Nemophila menziesii var. atomaria C. O. Baker 1962-3-22 2 Humboldt 2 mi. S of Trinidad along old Hwy. 101 122 Comment
  UC146183  Nemophila menziesii var. atomaria Joseph P. Tracy 1908-6-9 2645 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC67069  Nemophila menziesii var. atomaria H. P. Chandler 1276 Humboldt Hupa Mts. Comment
  HSC39198  Nemophila menziesii var. atomaria D. E. Anderson, J. P. Smith 1971-7-6 - 1326 Humboldt 1.0 mi. W of Pine Ridge Summit, 6 mi. E of junction with Redwood Valley Rd. Comment
  CAS-BOT-BC219407  Nemophila parviflora M. S. Jussel 1931-5-2 92 Humboldt Sylvandale, 8 miles N. of Garberville Comment
  HSC48844  Nemophila parviflora Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 43 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  UC1196162  Nicotiana quadrivalvis Joseph P. Tracy 1940-10-17 16769 Humboldt 2 to 5 mi e South Fork (along Eel River); Eel River 45 Comment
  HSC6968  Noccaea fendleri subsp. californica D. E. Anderson 1963-5-19 2465 Humboldt Comment
  HSC34230  Notholithocarpus densiflorus var. densiflorus Linda M. Barker 1974-5-11 176 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  RSA0013606  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-14 9353 Humboldt Town of Blue Lake. 15 Comment
  CHSC35519  Oemleria cerasiformis Thomas Nelson 1976-3-22 2276 Humboldt On hillside beside Eureka Muni. Golf Course. Comment
  HSC99107  Oemleria cerasiformis Cara Witte 2008-6-13 721 Humboldt Forest Service Road 4N32. 0.5 mi. N of intersection with Forest Service Road 4N32B. 1417 Comment
  UC1198783  Oemleria cerasiformis Joseph P. Tracy 1920-2-29 5310 Humboldt Eureka Northern Coast Ranges (at Stephen Hill place) 60 Comment
  UC154222  Oemleria cerasiformis Joseph P. Tracy 1909-6-13 2993 Humboldt near Blue Lake; Northern Coast Ranges, Mad River Valley 30 Comment
  CDA38484  Oenanthe sarmentosa Tario 1932-9-21 s.n. Humboldt Arcata. 0 Comment
  HSC21578  Oenanthe sarmentosa B. R. Templeton 1962-5-10 Humboldt Diagonal road from Humboldt State campus to 13th St., Arcata Comment
  HSC16523  Oenothera glazioviana David K. Smith 1968-11-20 68 Humboldt At jct. of Old Arcata Rd. and Jacoby Creek Rd. Comment
  HSC12756  Oenothera villosa subsp. strigosa M. J. Athey 1970-10-12 10 Humboldt Trinidad, at the entrance to Luffenholtz Beach parking lot Comment
  HSC92702  Oenothera wolfii D. K. Imper 1986-9-1 Humboldt 1 mi. S of Clam Beach exit, Hwy. 101, 6 mi. S of Trinidad 12 Comment
  UC35316  Orobanche fasciculata Chesnut and Drew 1888-7-12 Humboldt Jarnigan's. Comment
  JEPS10821  Orobanche fasciculata Lincoln Constance 1934-5-29 741 Humboldt Bull Creek Region. South Fork Eel River. Upper Look Prairie, just above Lookout Point. Comment
  UC642296  Orogenia fusiformis Joseph P. Tracy 1932-7-15 10595 Humboldt ridges e. of Corral Prairie Trinity Summit 1828 Comment
  JEPS66566  Orthilia secunda Joseph P. Tracy 1932-7-20 10737 Humboldt Trinity Summit, near Corral Prairie 1584 Comment
  CAS-BOT-BC238377  Orthocarpus Joseph P. Tracy 1935-7-24 14171 Humboldt Trinity Summit, near ranger station 1828 Comment
  RSA523835  Orthocarpus faucibarbatus var. albidus Gordon H. True Jr. 1936-5-12 475 Humboldt 2 miles S of Eureka. 15 Comment
  HSC56153  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-8-1 12009 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  RSA407951  Orthocarpus purpurascens Francis W. Pennell, Joseph P. Tracy 1940-7-6 26085 Humboldt Table Bluff L.H., W of Lolita. Back of beach. 0 Comment
  POM299483  Orthocarpus pusillus C. C. Harris, S. K. Harris 1942-6-18 1283 Humboldt 1 mile north and 3 miles west of Chalk Mountain. 665 Comment
  HSC76408  Osmorhiza berteroi Teresa Prendusi 1981-7-24 478 Humboldt Near Whiteys Peak 1585 Comment
  HSC16720  Oxalis articulata subsp. rubra J. E. Lankila 1962-5-6 11 Humboldt About 1/4 mi. N of Price Creek Comment
  JEPS43130  Oxalis corniculata Joseph P. Tracy 1918-11-17 5119 Humboldt Elk River Corners Northern Coast Ranges, Eureka 0 Comment
  HSC100585  Oxalis oregana Carl C. Marshall Mar 1886 151 Humboldt Everywhere. Comment
  HSC22047  Oxalis oregana B. D. Rogers, D. E. Anderson 1965-5-1 511 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  RSA24188  Oxalis oregana Carl B. Wolf 1941-3-2 9986 Humboldt N Coast Range. Bull Creek-Petrolia Road. 12 miles W of Redwood Highway. 457 Comment
  RSA32865  Oxalis oregana A. A. Heller 1923-7-8 13770 Humboldt Near Pepperwood Comment
  UC1103428  Oxalis trilliifolia Joseph P. Tracy 1932-7-15 10584 Humboldt ridges e Corral Prairie (Trinity Summit); Klamath Mtns 1828 Comment
  CAS-BOT-BC318152  Packera bolanderi var. bolanderi E. Hawver 1915-6-1 s.n. Humboldt near Carlotta Comment
  CAS-BOT-BC363261  Packera bolanderi var. bolanderi Gordon Leppig 2002-6-27 1763 Humboldt Grizzly Creek State Park, ~300m NW of campground on trailside on rocky slope above Grizzly Crk. 100 Comment
  HSC24218  Panicum capillare D. E. Anderson 1962-8-17 2289 Humboldt Dunes at Big Lagoon Co. Park. Comment
  UC184379  Panicum capillare Joseph P. Tracy 1912-10-20 4009 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UCD89396  Panicum capillare A. H. Christensen 1916-10-1 s.n. Humboldt Humboldt County. Comment
  SEINET10609310  Panicum capillare var. brevifolium A. Arthur Heller 1924-7-20 Heller 13864 Humboldt Occasional in sand along the El River at Phillipsville, in the redwood belt. Comment
  UC526843  Panicum oligosanthes var. scribnerianum Joseph P. Tracy 1931-5-17 9428 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  RSA246893  Parapholis incurva R. F. Thorne, P. Everett 1965-8-8 35274 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  UCSB12235  Parentucellia viscosa Breedlove, Dennis 1961-7-4 Humboldt 13 mi W of U.S. 101 on U.S. 299 near crossing of Mad River 228 Comment
  CDA6387  Parentucellia viscosa T. C. Fuller 1961-9-28 7060 Humboldt 1.5 miles south of Samoa. 0 Comment
  HSC99033  Paxistima myrsinites Cara Witte 2008-7-1 780 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1462 Comment
  HSC56164  Pedicularis attollens G. L. Clifton, Terry Griswold 1979-8-1 12048 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  BLMAR286  Pedicularis densiflora Jennifer Anthony-Wheeler 2000-4-18 286 Humboldt King range, mill creek forest 402 Comment
  HSC20931  Pedicularis densiflora N. J. Cole 1965-3-19 3 Humboldt 5 mi. S of Weitchpec along Hwy. 96 Comment
  CHSC3181  Pedicularis groenlandica Robert D. Briggs 1966-5-8 R- 187 Humboldt 1/4 mile south of Summit- 18 miles west of Willow Creek, on State 299. Comment
  HSC39931  Pellaea brachyptera J. O. Sawyer 1970-6-25 2294 Humboldt 1646 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
  HSC56333  Penstemon anguineus Walter Overton, Marvin Butler 1979-8-2 12705 Humboldt Near Grogan Hole, close to the town of Hoopa 1554 Comment
  UC1198048  Penstemon anguineus Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  BLMAR247  Penstemon anguineus Jennifer Anthony-Wheeler 1997-7-24 247 Humboldt Lacks Creek, growing NE of parking landing among regenerating forest 1219 Comment
  UC1245389  Penstemon anguineus Joseph T. Gregory 1933-7-16 449 Humboldt nr MacKay Camp (edge of swamp); nr MacKay Camp 1737 Comment
  RSA412524  Penstemon deustus H. M. Pollard 1948-7-19 s.n. Humboldt River road near Fleet Ranch, near Orleans. Comment
  UC1222462  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1948-6-13 18052 Humboldt near Harris; near Harris 609 Comment
  HSC96936  Penstemon laetus subsp. sagittatus Whitney Meier, Elizabeth Kimbrough 2007-6-11 5 Humboldt Cold Springs Camp, 14.1 mi. S of Hwy. 299 on FS Rd. NF1 Comment
  HSC76254  Penstemon newberryi Teresa Prendusi 1981-7-21 286 Humboldt Near Whiteys Peak 1646 Comment
  HSC102096  Penstemon newberryi var. berryi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 999 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  NY627415  Penstemon newberryi var. berryi R. W. Spellenberg 1990-7-9 10229 Humboldt Extreme east edge of county, 6 air miles west-northwest of Hyampom, 36 miles south of CA Highway 299 and Berry Summit on USFS Road 1, ca. 5 miles north of Blake Mountain on South Fork Mountain. 1676.4 Comment
  UC577416  Penstemon newberryi var. berryi Joseph P. Tracy Jul 16-19 1930 8953 Humboldt South Fork Mountain, open glades along summit near Blake lookout Northern Coast Ranges 1737 Comment
  NY641286  Penstemon rattanii F. W. Pennell 1940-7-8 26105 Humboldt Kneeland 670.6 Comment
  UC169849  Penstemon rattanii var. kleei V. Rattan 1870-1 Humboldt Comment
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Sep 7 2007
  HSC70388  Pentagramma triangularis Gail Newton 1980-6-7 143 Humboldt Near Brush Mtn. 1128 Comment
  RSA0066316  Pentagramma triangularis Lyman Benson 1928-7-12 472 Humboldt Weott Ranger Station. Seaward N Coast Range, S Fork Eel River watershed. 61 Comment
  RSA0094697  Pentagramma triangularis A. Davidson 1923-8-11 17064 Humboldt Near Scotia. Comment
  JEPS60093  Pentagramma triangularis subsp. triangularis Lincoln Constance 1934-5-24 630 Humboldt Bull Creek region; S Fork Eel River Comment
  HSC56264  Perideridia gairdneri subsp. gairdneri G. L. Clifton, Terry Griswold 1979-8-2 12421 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1197122  Perideridia howellii Joseph P. Tracy 1935-5-25 13854 Humboldt Fort Seward 106 Comment
  HSC38073  Perideridia howellii Thomas W. Nelson, James Nelson 1976-5-30 2634 Humboldt McKeowan Ranch N of Dinsmore along road to Anderson's Ford 915 Comment
  HSC56312  Perideridia kelloggii Overton, Butler 1979-8-2 12645 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC184145  Perideridia kelloggii Joseph P. Tracy 1912-10-20 3999 Humboldt Alton Northern Coast Region 30 Comment
  HSC17527  Persicaria maculosa Lincoln Constance 1934-6-12 861 Humboldt N bank of S Fork Eel River, Bull Creek Rd. Comment
  HSC6050  Petasites frigidus var. palmatus C. O. Baker 1962-3-22 6 Humboldt 2 mi. S of Trinidad along old Hwy. 101 183 Comment
  BLMAR530  Phacelia bolanderi Jennifer Wheeler 2009-6-23 530 Humboldt King range, On Paradise Ridge road Comment
  HSC13624  Phacelia bolanderi J. E. Lankila 1962-5-6 19 Humboldt West bank of Eel River across form Shively Comment
  HSC76574  Phacelia bolanderi Denis Kearns 1981-7-8 142 Humboldt Near Bluff Creek 622 Comment
  SD53212  Phacelia bolanderi D. F. Howe 1962-5-21 3300 Humboldt Hwy 101, 24.5 miles N of Garberville 60 Comment
  HSC98877  Phacelia egena Cara Witte 2007-5-29 137 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile south of cattle guard. 1369 Comment
  HSC30744  Phacelia heterophylla subsp. virgata D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5620 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  CAS-BOT-BC258864  Phalaris aquatica Henry M. Pollard 1947-9-1 s.n. Humboldt Field near Perch Creek, Orleans region Comment
  UC577627  Phalaris aquatica H. S. Yates 1936-6-23 5857 Humboldt 2 mi se mouth of Mad River; Eureka Quad. Comment
  CDA20501  Phalaris arundinacea P. Haggard 2004-7-8 PDR 1285917 Humboldt North Coast; Alder Grove Park near pond. 0 Comment
  RSA167286  Phalaris californica Joseph P. Tracy 1951-6-26 19599 Humboldt on Butter Valley Road, about 2 miles east of junction of Kneeland Prairie Road Comment
  UC1222381  Philadelphus lewisii Joseph P. Tracy 1950-6-18 18853 Humboldt 2 mi w Briceland; Redwood Creek Comment
  RSA10145  Phleum alpinum Joseph P. Tracy 1926-7-5 7733 Humboldt Valley of South Yager Creek. 762 Comment
  HSC49981  Phlox adsurgens M. A. Baker 1979-6-7 779 Humboldt N bank of road to Snow Mtn. 610 Comment
  SEINET12279173  Phlox adsurgens H. P. Chandler 1901-1 1534 Humboldt Klamath River 427 Comment
  HSC45267  Phlox diffusa M. Alcasas 1978-6-3 112 Humboldt Horse Mtn. summit 1513 Comment
  HSC45583  Phlox diffusa Diane L. Reed 1978-5-27 123 Humboldt Horse Mtn., Titlow Hill Rd., 3.4 mi. from junction with S.R. 299 Comment
  SEINET10496960  Phlox diffusa subsp. diffusa Botany 1985-5-10 BOTANY s.n. Humboldt T6n,r4e,sec.28,h.m.; Horse mountain road, ca 8 miles s of hwy 299, on open Slope with ceanothus ssp and quercus ssp. Flowers pale blue 1143 Comment
  UC1191121  Phlox douglasii subsp. rigida Joseph P. Tracy 1932-7-18 10699 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  UC906692  Phlox gracilis Joseph P. Tracy 1942-6-23 17403 Humboldt near Box Camp; Trinity Summit 1524 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
  JEPS26749  Phoradendron villosum W. L. Jepson 1932-7-24 16545 Humboldt ca. 6 1/2 mi. above & e. Garberville (from near rd. along summit of Mail Ridge) 914 Comment
  UC672881  Phyllospadix scouleri Joseph P. Tracy 1938-9-9 16147 Humboldt Trinidad Comment
  CAS-BOT-BC140584  Physocarpus capitatus Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  POM21764  Picea sitchensis L. R. Abrams 1916-7-18 6131 Humboldt Arcata to Trinidad. Comment
  UC136  Picea sitchensis J. P. Tracy 1901-4-17 Humboldt Samoa, Humboldt Bay Comment
  LA6067  Pinus contorta Carl Epling; William Robison 1935-7-22 sn Humboldt Patrick's Point Comment
  SD117462  Pinus contorta subsp. bolanderi Robert F. Thorne 1974-7-29 45083 Humboldt Samoa Dunes Comment
  POM282097  Pinus contorta var. contorta H. E. Parks 1931-05 s.n. Humboldt Samoa, Pine Barrens. Comment
  HSC98647  Pinus monticola Cara Witte 2007-9-3 638 Humboldt Horse Mountain Botanical Area. Road 6N38. 1 mile east of Horse Mountain Mine. 1259 Comment
  HSC98813  Pinus monticola Cara Witte 2008-7-7 835 Humboldt Horse Mountain Botanical Area. 1/4 mile east of intersection National Forest 1, Forest Service Roads 6N36 and 6N38. 1415 Comment
  HSC31514  Pinus muricata Steve Selva, Roger Jensen 1974-8-21 32 Humboldt E bank of Hwy. 101 opposite rest stop, 2 mi. N of Trinidad Comment
  UC14939  Piperia elegans Harley P. Chandler Jun 1901 1385 b Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC24556  Pityopus californicus Rudolf W. Becking 1972-6-30 720608 Humboldt Fish Lake area, Orleans 762 Comment
  UC582610  Plagiobothrys bracteatus Joseph P. Tracy 1936-6-3 14842 Humboldt opposite mouth of Willow Creek; Northern Coast Ranges, Trinity River Valley, Lack Pond 152 Comment
  JEPS61027  Plagiobothrys hispidulus Joseph P. Tracy 1932-7-10 10386 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC41225  Plagiobothrys hispidulus Thomas W. Nelson, Jane P. Nelson 1977-6-19 3497 Humboldt Above Alder Springs 1585 Comment
  SBBG28861  Plagiobothrys reticulatus H. E. Parks -Jul-1937 24042 Humboldt Spruce Cove, Trinidad 64 Comment
  UC1239609  Plagiobothrys reticulatus Joseph P. Tracy 1936-6-9 14884 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC526821  Plagiobothrys reticulatus Joseph P. Tracy 1932-5-10 9962 Humboldt Mattole Valley near Petrolia; Northern Coast Ranges, Mattole Valley 30 Comment
  UC526823  Plagiobothrys reticulatus Joseph P. Tracy 1923-6-20 6340 Humboldt Miranda North Coast Ranges, Miranda 91 Comment
  UC667004  Plagiobothrys reticulatus Joseph P. Tracy 1939-4-18 16214 Humboldt w side South Fork Eel River at Garberville; w side South Fork Eel River, Garberville 152 Comment
  JEPS68128  Plagiobothrys tenellus Joseph P. Tracy 1932-5-1 9863 Humboldt near Garberville (Redway); Northern Coast Ranges 182 Comment
  UC54756  Plagiobothrys tenellus Harley P. Chandler May, 1901 1255 Humboldt Redwood Belt/Region North Coast Ranges 152 Comment
  RSA178585  Plantago erecta Joseph P. Tracy 1950-6-8 18730 Humboldt Bear River Ridge. Comment
  UC1196140  Plantago erecta Joseph P. Tracy 1912-5-12 3638 Humboldt Eureka Northern Coast Region 0 Comment
  UCR37555  Plantago erecta L. P. Janeway 1983-5-1 257 Humboldt Northern Coast, North Spit (Samoa Peninsula). Sand dunes west of Samoa Rd and north of Coast Guard Station 6 Comment
  HSC69585  Plantago lanceolata R. Kalal 1980-7-20 90 Humboldt .2 mi. N of Arcata Marsh project 2 Comment
  UC154018  Plantago major J. P. Tracy 1910-10-1 3167 Humboldt immediate vicinity Eureka 0 Comment
  RSA15562  Plantago maritima Carl B. Wolf 1927-8-29 1210 Humboldt Devils' Gate, S of Cape Mendocino Comment
  UC1196418  Platanthera sparsiflora Joseph P. Tracy 1932-7-16 10631 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  HSC47999  Platanthera sparsiflora Brad Klipfel 1975-6-17 673 Humboldt Comment
  CAS-BOT-BC91642  Platystemon californicus W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula. Comment
  HSC16796  Platystemon californicus S. J. Hawks 1965-3-9 45 Humboldt 1 mi. W of McKinleyville, past the end of Murray Rd. Comment
  HSC33745  Platystemon californicus A. M. Montalvo 1975-5-24 269 Humboldt Samoa Dunes, off Samoa Blvd. across from the boat landing Comment
  HSC69774  Platystemon californicus R. Kalal 1979-5-28 63 Humboldt Along Samoa Blvd. 6 Comment
  UC1018910  Plectritis brachystemon S. C. Dyal 1938-6-11 719 a Humboldt 11 mi w of Dinsmore (on McClellan Mountain); McClellan Mountain Comment
  UC1239581  Plectritis congesta Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3630 Humboldt between Alton and Hydesville; Northern Coast Region 30 Comment
  UC999832  Plectritis congesta S. C. Dyal 1938-6-11 719 d Humboldt 2 mi e of Dinsmore Comment
  HSC63230  Plectritis congesta subsp. brachystemon M. A. Baker 1979-5-6 473 Humboldt Weitchpec. Comment
  RSA183537  Pleuropogon refractus H. S. Logsdon 1964-5-10 12 Humboldt 4 miles NE of Orick at Boye's Prairie Comment
  UC1258192  Pleuropogon refractus Paul But with Grace Law 1976-5-15 P 28 Humboldt 3 mi n of Eureka (along Jacoby Creek Road); Jacoby Creek Comment
  UCD90105  Pleuropogon refractus R. Tofsrud 1949-7-22 s.n. Humboldt on road between Scotia and Capetown. Comment
  UC1103796  Poa annua Joseph P. Tracy 1921-4-24 5432 Humboldt S Fork of Eel River Phillipsville Flat; Northern Coast Ranges 91 Comment
  SACT001812  Poa bolanderi subsp. howellii H. Stinnett 1963-5-12 Humboldt open slopes Comment
  SEINET200582 Image available Poa confinis Joseph P. Tracy 1910-4-24 3123 Humboldt Sand dunes of Ocean Beach at Humboldt. Comment
  HSC10698  Poa douglasii J. W. Johnson 1962-6-4 1426 Humboldt Arcata, 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
  UC1132657  Poa douglasii H. S. Yates 1936-6-18 5725 Humboldt near mouth Little River; Eureka Quadrangle Comment
  UC589894  Poa douglasii H. S. Yates 1936-6-18 5725 Humboldt near mouth of Little River 4 Comment
  SEINET236442 Image available Poa howellii Joseph P. Tracy 1906-6-10 2486 Humboldt Kneeland Prairie. 762 Comment
  UC249671  Poa howellii Joseph P. Tracy 1922-4-30 6014 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UCSC000061  Poa howellii H. S. Yates 1936-6-17 5709 Humboldt Lower NW slope of Buck Mtn. - South Fork Pk. 792 Comment
  HSC10758  Poa pratensis E. W. Styskel 1964-4-26 72 Humboldt End of Davis St. at edge of Eel River in Rio Dell. Comment
  HSC10771  Poa pratensis R. V. Papike 1962-5-25 32 Humboldt Arcata. 91 Comment
  HSC40338  Poa pratensis Linda M. Barker 1976-6-1 1567 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  UCD91919  Poa pratensis P. B. Kennedy 1923-8-3 s.n. Humboldt south of Scotia. By road through red woods off highway. Comment
  CAS-BOT-BC235983  Poa secunda subsp. secunda Doris Kildale Gillespie 1931-6-7 10640 Humboldt South Fork Mountain, Blake Lookout 1726 Comment
  HSC102191  Poa secunda subsp. secunda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1105 Humboldt Andy's Camp 1564 Comment
  HSC98669  Poa secunda subsp. secunda Cara Witte 2008-7-2 813 Humboldt Board Camp Mountain. Road to Tri Board Camp. Forest Service Road 4N38. 1574 Comment
  HSC41373  Poa trivialis J. O. Sawyer 1970-6-24 2277 Humboldt W of Mill Creek Lakes. 1677 Comment
  UC1145116  Poa trivialis Joseph P. Tracy 1943-7-18 17435 Humboldt Big Lagoon 9 Comment
  CAS-BOT-BC244205  Poa unilateralis Joseph P. Tracy 1927-6-8 8113 Humboldt Trinidad. Bluffs facing ocean Comment
  HSC10810  Poa unilateralis J. P. Tracy 1927-6-8 8113 Humboldt Trinidad 61 Comment
  UC1103176  Poa unilateralis J. P. Tracy 1919-4-27 5134 Humboldt Ocean Beach at Samoa Comment
  UC604642  Pogogyne zizyphoroides Joseph P. Tracy 1938-7-5 16005 Humboldt Carlotta, open flat by old Strong's District School House, 5 miles east of town 45 Comment
  HSC32032  Polycarpon tetraphyllum D. E. Anderson 1974-8-1 Humboldt 6th St. in Eureka Comment
  HSC17226  Polygala californica Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  UC668188  Polygala cornuta Joseph P. Tracy 1936-8-30 15182 Humboldt Willow Creek Trinity River Valley 152 Comment
  RSA21671  Polygala cornuta var. cornuta Carl B. Wolf 1937-8-13 9224 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New Road towards Trinity summit. 1220 Comment
  UC672946  Polygonum amphibium Joseph P. Tracy 1934-7-20 13467 Humboldt Big Lagoon; edge of tule swamp 3 Comment
  HSC17474  Polygonum aviculare C. B. Wolf 1927-8-29 1208 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  UC184021  Polygonum bistortoides Joseph P. Tracy 1913-6-17 4151 Humboldt Burr Valley Northern Coast Ranges, Buck Mountain (nw slope of mt.) 1066 Comment
  UC672974  Polygonum bistortoides Joseph P. Tracy 1930-7-16 8924 Humboldt McKay Camp South Fork Mountain 1676 Comment
  HSC17487  Polygonum californicum D. E. Anderson 1961-9-3 1776 Humboldt Comment
  UC1713699  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1919-9-18 5237 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UC146189  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1908-6 2921 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC175823  Polygonum lapathifolium Joseph P. Tracy 1912-10-20 4008 Humboldt Alton Northern Coast Region (bed of dried-up slough) 30 Comment
  CAS-BOT-BC418615  Polygonum majus Alice Eastwood 1921-7-21 10668 Humboldt Van Duzen River Comment
  BLMAR616  Polygonum paronychia Jennifer Wheeler 2011-5-20 616 Humboldt King range, Below Strawberry Rock along Mattole dunes 7 Comment
  HSC64430  Polygonum paronychia J. P. Smith 1971-10-6 4957 Humboldt End of Murray Rd. in McKinleyville. Comment
  POM232027  Polygonum paronychia I. L. Wiggins 1930-7-11 4685 Humboldt Near Samoa Comment
  RSA244991  Polygonum persicaria Norman Dennis 1965-6-8 109 Humboldt Samoa Peninsula along the W side of the Humboldt Bay. Comment
  UC176682  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1912-7-31 3924 Humboldt Buck Mountain Northern Coast Ranges (near summit) 1676 Comment
  CAS-BOT-BC421009  Polygonum spergulariiforme Doris Kildale 1931-6-6 10872 Humboldt Gans Prairie, Orick - Weitchpec road Comment
  UC709395  Polypodium Joseph P. Tracy 1941-3-26 16835 Humboldt at Willow Creek Willow Creek; Trinity River Valley 152 Comment
  HSC74673  Polypodium californicum Gail Newton 1981-5-16 2171 Humboldt Near Bug Creek. 1228 Comment
  CAS-BOT-BC71831  Polypodium californicum Ira L. Wiggins 1957-6-21 14141 Humboldt E side of road, 1 mi. S of Garberville Comment
  SEINET3873589  Polypodium californicum Thomas Nelson, Jane P. Nelson 1976-2-21 2250 Humboldt Tish-Tang Campground.; 0 Comment
  CHSC53230  Polypodium glycyrrhiza L. P. Janeway 1984-12-5 1194 Humboldt On the North Spit of Humboldt Bay; on the west side of Samoa Rd near the boat ramp. 4 Comment
  HSC45868  Polypodium glycyrrhiza J. P. Smith 1971-10-6 4984 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC197909  Polypodium glycyrrhiza Joseph P. Tracy 1913-3-9 4023 Humboldt Hydesville; Northern Coast Region 30 Comment
  CAS-BOT-BC72080  Polypodium scouleri Joseph P. Tracy 1933-6-6 12510 Humboldt Trinidad 6 Comment
  CHSC94935  Polypodium scouleri K. Lang; J. Lang 2005-3-17 31 Humboldt Fern Canyon, near Orick. 15 Comment
  HSC39900  Polypogon monspeliensis J. P. Smith 1971-10-9 5035 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC65445  Polypogon monspeliensis J. P. Smith 1973-5-26 6813 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC34073  Polypogon monspeliensis J. P. Tracy 1901-7-24 1217 Humboldt immediate vicinity Eureka 0 Comment
  SEINET10927106  Polypogon monspeliensis Harley P. Chandler Chandler 1431 Humboldt 30 Comment
  RSA152378  Polypogon viridis Joseph P. Tracy 1943-8-29 17445 Humboldt [Unspecified] Comment
  RSA693352  Polystichum dudleyi J. Hickman 1882-1 s.n. Humboldt Near Cape Mendocino. Comment
  HSC47991  Polystichum imbricans Brad Klipfel 1974-6-17 681 Humboldt Horse Mtn. Comment
  CHSC23905  Polystichum munitum Mark Johnson 1974-4-28 28 Humboldt Adjacent to Lady Bird Johnson Grove, 5 mi ne of Orick. 228 Comment
  HSC79145  Polystichum munitum C. J. Thomas 1984-9-25 120 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  UC1196663  Populus trichocarpa Joseph P. Tracy 1932-5-1 9842 Humboldt along Van Duzen River Alton (North Coast Ranges); , along Van Duzen River 30 Comment
  JEPS42963  Potamogeton amplifolius W. L. Jepson 1936-8-17 17933 Humboldt Mad River near Arcata; Mad River Comment
  CAS-BOT-BC453768  Potamogeton natans W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  CAS-BOT-BC454067  Potamogeton pusillus subsp. pusillus S. K. Harris 1938-9-12 s.n. Humboldt Backwater of Eel River, near Fernbridge Comment
  HSC95736  Potentilla anserina subsp. pacifica Steven Lee 2004-4-10 11 Humboldt Drive from intersection of V St. and Samoa Blvd. in Arcata 1/8 mi. towards parking area to S 200 Comment
  CAS-BOT-BC143072  Potentilla anserina subsp. pacifica Kenneth Clark 1980-5-10 652 Humboldt Western beach of Point Delgada 3 Comment
  HSC101969  Potentilla gracilis var. fastigiata M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 865 Humboldt Patterson Meadows 1566 Comment
  UC154515  Potentilla gracilis var. gracilis Harley P. Chandler June, 1901 1390 Humboldt Hupa Indian Reservation North Coast Ranges, , Hupa Valley (Hupa Valley) 152 Comment
  RSA135410  Potentilla palustris Volney Rattan 1883-6-4 s.n. Humboldt 3 miles from Eureka Comment
  HSC45241  Prosartes hookeri Thomas W. Nelson, Jane P. Nelson 1977-7-1 3553 Humboldt Along Blanket Creek, N side of ridge between Bear and Blanket Creeks 1463 Comment
  CAS-BOT-BC517503  Prosartes smithii H. C. Cantelow 1936-5-17 s.n. Humboldt 3 miles east of Orick Comment
  HSC15480  Prosartes smithii W. F. Nickel 1965-5-15 Humboldt 0.5 mi. E of Arcata on rd. to Arcata Reservoir Comment
  HSC14310  Prunella vulgaris H. E. Parks, J. P. Tracy 1930-9-14 7700 Humboldt Vicinity of Bayside Comment
  BLMAR261  Prunella vulgaris subsp. lanceolata Jennifer Anthony-Wheeler 1998-7-14 261 Humboldt King range, strawberry rock grazing allotment 280 Comment
  UC1196726  Prunella vulgaris var. lanceolata Joseph P. Tracy 1914-5-14 4424 Humboldt Fort Seward; Northern Coast Ranges, Fort Seward 121 Comment
  UC153994  Prunella vulgaris var. lanceolata Joseph P. Tracy 1908-6 2776 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC577391  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
  UCD134980  Pseudognaphalium ramosissimum Linda M. Barker 1976-8-2 1678 Humboldt 3 miles west of Arcata. Comment
  HSC67443  Pseudognaphalium stramineum J. P. Smith 1971-10-6 4936 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC95588  Pseudognaphalium stramineum Andrea Pickart 2002-7-3 162 Humboldt Lanphere Dunes: Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  SD148240  Pseudognaphalium stramineum G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7013 Humboldt Samoa Peninsula, 2.6 miles south of California Highway 255, bridge across Humboldt Bay. 14 Comment
  HSC88102  Pseudognaphalium stramineum R. W. Becking 1989-2-28 Humboldt Samoa, N Spit, Coast Guard back dunes Comment
  HSC5708  Pseudognaphalium thermale J. P. Tracy 1938-8-14 16111 Humboldt Trinity River Valley at Willow Creek 152 Comment
  UC535777  Pseudotsuga menziesii Eleanor Armstrong 1934-8-15 1186 Humboldt Richardson Grove Richardson Grove (on hillslopes) 121 Comment
  HSC54603  Pseudotsuga menziesii var. menziesii Overton, Butler 1979-7-24 9686 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  SD42987  Pteridium aquilinum var. pubescens Edith A. Purer 1932-7-27 Humboldt Samoa Comment
  SD42991  Pteridium aquilinum var. pubescens Edith A. Purer 1932-7-30 Humboldt south of Orick Comment
  JEPS60088  Pteridium aquilinum var. pubescens Lincoln Constance 1934-6-13 876 Humboldt Bull Creek Region, S. Fork Eel R. Comment
  UCD92960  Puccinellia pumila Joseph P. Tracy 1938-7-15 16073 Humboldt Mouth of Eel River. Comment
  JEPS66558  Pyrola aphylla Lincoln Constance 1934-6-2 792 Humboldt Bull Creek Region, road to mouth of Bull Cr. and up Bull Cr., South Fork Eel River Comment
  HSC41260  Pyrola dentata Brad Klipfel 1974-7-23 452 Humboldt Horse Mtn., N of the towers Comment
  HSC45423  Pyrola dentata Thomas W. Nelson, Jane Nelson 1977-7-4 3584 Humboldt W side of road N of Alder Springs, head of N Fork of Conley Creek 1494 Comment
  HSC99085  Pyrola dentata Cara Witte 2007-6-26 355 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  HSC41317  Pyrola picta Brad Klipfel 1974-9-2 535 Humboldt Horse Mtn. Comment
  UC1541552  Pyrola picta Harold E. Parks 1934-6-27 4931 Humboldt Horse Mountain 1280 Comment
  HSC100474  Pyrola picta Carl C. Marshall Jun 1886 294 Humboldt Pine Creek. Comment
  RSA0080453  Pyrola picta C. B. Wolf 1937-8-13 9259 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  UC1326244  Pyrola picta Milo S. Baker 1947-8-10 11908 Humboldt near end of Forest Rd. from Hoopa toward Trinity Summit 1371 Comment
  POM270213  Quercus chrysolepis Lyman Benson 1928-7-14 519 Humboldt Richardon's Grove of Redwoods, Redwood Highway, south county boundary, Middle N Coast Mt. Range, South Fork of Eel River. 122 Comment
  UC1196532  Quercus chrysolepis Joseph P. Tracy 1916-9-5 4775 Humboldt 4 mi above Mouth of South Fork of Eel River; Northern Coast Ranges, South Fork of Eel River 60 Comment
  UCR32154  Quercus chrysolepis David J. Keil 1983-7-1 17275 Humboldt North Coast Range, Bull Creek Flats Road, 2.5 mi. NE of Honeydew Comment
  CAS-BOT-BC94306  Quercus garryana Roxana S. Ferris 1955-7-11 12973 Humboldt Summit of US Highway 299 betw. Willow Creek and Blue Lake Comment
  UC249563  Quercus garryana Joseph P. Tracy 1922-4-30 6008 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  BLMAR208  Quercus garryana subsp. breweri Jennifer Anthony-Wheeler 1996-7-9 208 Humboldt Pilot ridge., growing as main hardwood component of stand 1280 Comment
  OBI36116  Quercus garryana var. garryana David J. Keil 1983-7-1 17265 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  OBI36669  Quercus garryana var. garryana David J. Keil 1983-7-2 17343 Humboldt 21 mi S of SR 299 along Titlow HIll rd, SW of Willow Crk Comment
  CAS-BOT-BC104332  Quercus sadleriana Clarence R. Quick 1959-6-24 59 -41 Humboldt Bee Mt. ca. 12 miles SW of Orleans Comment
  UC1196512  Quercus sadleriana Joseph P. Tracy 1935-7-23 14155 Humboldt lower end of Brett Hole Trinity Summit, Brett Hole 1584 Comment
  UCR32169  Quercus vacciniifolia David J. Keil 1983-7-2 17324 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  SEINET10477739  Quercus vacciniifolia Jone 1985-6-6 JONE 113 Humboldt T34n,r4e,sec.14. Titlow rd. Ca 8 miles s off hwy 299 going to horse mt. Found At intersection of titlow rd. And the road to horse mt. Summit. Pinus, arbutus, Quercus chrysolepis, quercus vaccinifolia habitat 1143 Comment
  CAS-BOT-BC104664  Quercus wislizeni J. G. Lemmon 1904-1-1 s.n. Humboldt Eel River Comment
  UC180641  Quercus wislizeni Joseph P. Tracy 1914-5-14 4458 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  RSA670131  Ranunculus J. M. Tucker 1948-9-4 1864 Humboldt Ferndale, Humboldt County Fair Grounds Comment
  JEPS55034  Ranunculus alismifolius var. alismellus W. L. Jepson July, 1902 2106 Humboldt Trinity Summit 2133 Comment
  UC162339  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1911-7-7 3395 Humboldt three mi nw junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC594250  Ranunculus aquatilis var. hispidulus C. C. and S. K. Harris 1936-6-12 3363 Humboldt near Bridgeville; Chalk Mountain Comment
  HSC45060  Ranunculus californicus var. californicus R. Sutherland 1978-4-24 10 .24478 Humboldt Gravel slide of road cut 323 Comment
  UC13971  Ranunculus flabellaris Chesnut and Drew 1888-8-1 Humboldt near Grouse Creek (pond) Comment
  RSA273369  Ranunculus flammula J. O. Sawyer 1977-4-25 3043 Humboldt Along N side of Buttermilk lane Sunnybrae. Across the street from 1425 Buttermilk Lane Comment
  HSC82522  Ranunculus occidentalis Thomas W. Nelson 1977-6-15 3441 Humboldt Along old road to Horse Mountain ski area. 1372 Comment
  UC1196218  Ranunculus occidentalis J. P. Tracy 1901-5-30 1107 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC36501  Ranunculus occidentalis var. occidentalis Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1890 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC45624  Ranunculus occidentalis var. occidentalis Diane L. Reed 1978-4-22 11 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  SEINET6908793  Ranunculus occidentalis var. occidentalis Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  SD90193  Ranunculus orthorhynchus var. orthorhynchus Benjamin C. Stone 1952-6-23 Humboldt Redwood Forest, wet open places on Coast Hwy. 101 20 miles south of Klamath 46 Comment
  UC1542906  Ranunculus orthorhynchus var. orthorhynchus H. E. and S. T. Parks May 1930 755 Humboldt Laribee Valley Comment
  UC503033  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9007 Humboldt near McKay Camp (along stream below meadow); Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1116204  Ranunculus parviflorus Joseph P. Tracy 1948-6-13 18026 Humboldt flat by old Strong's District School House (5 mi e of Carlotta) 60 Comment
  HSC55698  Ranunculus uncinatus Overton, Butler 1979-7-26 10022 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  HSC6888  Raphanus sativus W. F. Nickel 1965-4-3 Humboldt 1 mi. N of Orick on Hwy. 101 Comment
  RSA8097  Rhamnus californica Carl B. Wolf 1927-8-30 1226 Humboldt 2 miles S of Petrolia on the Matole River near point where the road crosses the river. Comment
  UC1197985  Rhamnus californica Joseph P. Tracy 1927-7-24 8297 Humboldt Upper Mattole Northern Coast Ranges, South Fork Eel River 152 Comment
  UC1197992  Rhamnus californica Joseph P. Tracy 1934-8-4 13556 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS42009  Rhamnus californica subsp. californica W. L. Jepson 1903-6-19 2206 Humboldt Briceland, s Humboldt County Briceland Comment
  RSA7735  Rhamnus californica subsp. occidentalis Carl B. Wolf 1927-8-28 1172 Humboldt On grade 9 miles from Willow Creek, Lord Ellis Road to Blue Lake Comment
  RSA2933  Rhamnus purshiana Carl B. Wolf 1931-8-30 2373 Humboldt E side of Eureka on P st, on block N of Henderson Street. 30 Comment
  UC177180  Rhamnus purshiana Joseph P. Tracy 1913-6-13 4108 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC199061  Rhamnus purshiana Chesnut and Drew Jul 1888 Humboldt Jarnigan's Comment
  UC668149  Rhamnus purshiana Joseph P. Tracy 1933-6-7 12525 Humboldt Bridgeville 198 Comment
  HSC23118  Rhododendron columbianum Norman Dennis 1965-6-3 143 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  HSC36263  Rhododendron columbianum John Rehling 1974-8-20 25 Humboldt Big Lagoon Bog Comment
  HSC7873  Rhododendron macrophyllum P. Markle 1962-5-22 54 Humboldt End of 18th St., Arcata Community Forest Comment
  RSA257015  Rhododendron macrophyllum Gary D. Wallace 1971-7-29 950 Humboldt Prairie Creek Redwoods St. Pk. along Zig Zag Trail #3 of Hwy. 101. Comment
  UCD67631  Rhododendron macrophyllum D. Sanchez-Mata 1996-6-27 s.n. Humboldt Blue Lake. Mad River. 175 Comment
  RSA471000  Rhododendron macrophyllum Anstruther Davidson s.n. Humboldt (?) Hutchinson Comment
  SEINET11996978  Rhododendron macrophyllum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -297 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  CAS-BOT-BC56640  Rhododendron occidentale Aven Nelson; Ruth A. Nelson 1933-5-15 575 Humboldt Redwood Highway Comment
  UCSB4803  Rhododendron occidentale Phillips, Priscilla 1958-6-7 Humboldt Highway 101, 14.1 mi. south of Prairie Creek Redwoods State Park (north of Trinidad) Comment
  SEINET11976085  Rhododendron occidentale H. P. Chandler 1901-1 1448 Humboldt Klamath 457 Comment
  RSA0062953  Rhododendron occidentale var. californicum C. B. Wolf 1934-7-2 5905 Humboldt 4.5 miles from Snow Camp on road to Bald Mt (Mtns E of Korbel). 1067 Comment
  CDA21386  Rhododendron occidentale var. paludosum G. F. Hrusa, T. D. Wilfred, N. Kang 1992-5-4 9401 Humboldt North Coast Ranges; Stagecoach Hill on Kane Rd. above and immed. NW of Big Lagoon and SE of Stone Lagoon. 158 Comment
  HSC7890  Rhododendron occidentale var. paludosum T. M. Mingo May 1965 Humboldt E of parking lot at College Cove, and along road E of College Cove Comment
  HSC91896  Rhododendron occidentale var. paludosum E. Mackey 1987-5-19 Humboldt Patrick's Point State Park, on road to Palmer's Point Comment
  HSC57641  Ribes binominatum G. L. Clifton, Griswold 1979-7-25 10805 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  RSA170225  Ribes bracteosum Joseph P. Tracy 1918-5-28 4939 Humboldt High Prairie Creek. 915 Comment
  CAS-BOT-BC108912  Ribes divaricatum var. pubiflorum H. E. McMinn 1922-8-5 345 Humboldt Along Van Duzen River. Comment
  CAS-BOT-BC168876  Ribes lacustre Joseph P. Tracy 1933-7-16 12784 Humboldt South Fork Mountain, openings in fir forest near McKay Camp 1676 Comment
  UC667071  Ribes lacustre Joseph P. Tracy with Dr. F. W. Pennell 1940-7-7 16664 Humboldt Friday Ridge road Grouse Mt. 1371 Comment
  HSC40559  Ribes lobbii Thomas W. Nelson, Jane P. Nelson 1976-5-23 2523 Humboldt SW facing slopes 1666 Comment
  HSC76263  Ribes lobbii Denis Kearns 1981-7-23 425 Humboldt Near Whiteys Peak. 1524 Comment
  JEPS49356  Ribes lobbii W. L. Jepson 1902-7-16 2038 Humboldt Trinity Summit 2133 Comment
  UC1198924  Ribes lobbii Joseph P. Tracy 1942-6-23 17249 Humboldt near Box Camp; Trinity Summit 1584 Comment
  UC667058  Ribes lobbii Joseph P. Tracy 1935-5-12 13801 Humboldt summit between North Fork Mad River and Redwood Creek (on Trinity Highway) 670 Comment
  HSC102025  Ribes marshallii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 926 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC103201  Ribes marshallii Jade Paget-Seekins 2010-7-6 40 Humboldt On the western shore of Red Cap Lake, mostly to the right of the rocky slope. (Accessible via a few hour hike from the High Point trailhead outside of Forks of Salmon.) 1754 Comment
  CAS-BOT-BC206044  Ribes menziesii Doris K. Kildale 1928-2-19 4272 Humboldt Patrick's Point Comment
  HSC20317  Ribes menziesii G. B. Kendall 1965-5-16 33 Humboldt Trinidad State Park Comment
  JEPS49222  Ribes menziesii Jos. P. Tracy 1909-2-14 2941 Humboldt Eureka 0 Comment
  UC1198929  Ribes menziesii Joseph P. Tracy 1936-3-22 14783 Humboldt 4 mi se Korbel (Angel's Ranch) 457 Comment
  UC154122  Ribes menziesii J. P. Tracy 1904-7-31 2131 Humboldt immediate vicinity Eureka 0 Comment
  HSC57643  Ribes nevadense G. L. Clifton, Griswold 1979-7-25 10807 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  BLMAR269  Ribes roezlii var. cruentum Jennifer Anthony-Wheeler 1999-7-30 269 Humboldt Lacks Creek, growing in Hupa mt quad 1219 Comment
  BLMAR653  Ribes roezlii var. cruentum Jennifer Wheeler 2012-5-9 653 Humboldt Lacks Creek, Pine Ridge Road 1097 Comment
  CAS-BOT-BC198904  Ribes roezlii var. cruentum Peter H. Raven; R. Snow 1958-7-20 13630 Humboldt Friday Ridge Road to Grouse Mountain, 10.8 miles southwest of junction with United States Highway 299. Comment
  JEPS49459  Ribes roezlii var. cruentum Joseph P. Tracy 1922-4-30 6041 Humboldt mountain slopes along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges, Three Creeks 670 Comment
  CHSC24919  Ribes sanguineum M. B. Simpson 1976-4-10 19 Humboldt On w bank of West Haven Creek, ca. 20 yds n of Wagon Wheel Road, ca. .1 mi e of West Haven Dr, ca. 13 mi n of Arcata. 121 Comment
  HSC40117  Ribes sanguineum Dan O'Brien 1962-5-19 Humboldt 4 1/2 mi. E on Fickle Hill Rd. Comment
  HSC71583  Ribes sanguineum Gail Newton 1980-6-16 188 Humboldt Near Onion Mtn. 1280 Comment
  UC1541333 Image available Ribes sanguineum Parks and Parks 1932-4-10 Humboldt Blue Slide Van Duzen River Comment
  CAS-BOT-BC144682  Ribes sanguineum var. glutinosum Ira L. Wiggins 1930-7-22 4693 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  UCR179227  Ribes sanguineum var. glutinosum R. G. Swinney 1968-3-28 233 Humboldt East of Humboldt State College, Arcata 152 Comment
  RSA0018240  Ribes sanguineum var. sanguineum E. R. Johnson 1929-08 1417 Humboldt Arcata Redwood Park. 76 Comment
  CAS-BOT-BC173989  Ribes viscosissimum Doris K. Kildale 1925-8-17 1199 Humboldt Trinity Summit 1917 Comment
  HSC103199  Ribes viscosissimum Jade Paget-Seekins 2010-7-5 36 Humboldt On the trail to Mill Creek Lake, up Big Hill Road, outside of Hoopa. 1655 Comment
  HSC75512  Ribes viscosissimum J. O. Sawyer, R. J. Cole 1977-7-3 3023 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  CAS-BOT-BC222678  Romanzoffia tracyi Lincoln Constance; Alan A. Beetle; Joseph P. Tracy 1940-5-18 2619 Humboldt North of Trinidad 30 Comment
  UC702003  Romanzoffia tracyi Harold E. Parks March 1946 24276 Humboldt ocean bluffs at Trinidad Head Comment
  UC183622  Rorippa curvisiliqua Joseph P. Tracy 1913-6-20 4220 Humboldt Dinsmore's Ranch opposite Buck Mountain (in valley of Van Duzen River); Northern Coast Ranges, in valley Van Duzen River, Buck Mt 762 Comment
  UC14401  Rorippa palustris Chestnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  JEPS47283  Rosa eglanteria W. L. Jepson 1936-8-18 17947 Humboldt 1/2 mi nw Petrolia (along a gully in the village) Comment
  CAS-BOT-BC146487  Rosa gymnocarpa Doris K. Kildale 1927-5-13 3176 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC146490  Rosa gymnocarpa Carl B. Wolf 1927-8-30 1232 Humboldt 2 mi. so. of Petrolia on Matole River near point where road crosses river Comment
  CAS-BOT-BC146827  Rosa nutkana Doris K. Kildale 1927-7-11 3716 Humboldt Blue Slide on the Van Duzen River Comment
  CAS-BOT-BC146832  Rosa nutkana Alice Eastwood; John Thomas Howell 1937-6-23 4768 Humboldt Near Dinsmore's Comment
  HSC98782  Rosa nutkana Cara Witte 2008-6-27 770 Humboldt Approximately 1/2 mile north of White Oak Opening on National Forest 1. 1242 Comment
  UC588191  Rosa nutkana var. nutkana H. E. and S. T. Parks June, 1937 24021 Humboldt Spruce Cove Trinidad Comment
  UC902162  Rosa nutkana var. nutkana Joseph P. Tracy 1947-8-10 17883 Humboldt 2 mi s of town Field's Landing 6 Comment
  CAS-BOT-BC148344  Rosa pisocarpa Joseph P. Tracy 1949-8-7 18436 Humboldt Trinity Summit, near Box Camp in open fir timber. 1524 Comment
  UC902155  Rosa pisocarpa Joseph P. Tracy 1947-8-24 17890 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC146884  Rosa rubiginosa Doris K. Kildale 1927-7-1 3616 Humboldt Alton Hill 30 Comment
  HSC19675  Rubus armeniacus R. T. Haase 1965-5-3 30 Humboldt Parking lot behind Mai Kai Apts. Comment
  HSC58030  Rubus leucodermis G. L. Clifton 1979-7-31 11850 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC162331  Rubus parviflorus Joseph P. Tracy 1911-7-7 3432 Humboldt between Willow Creek and Campbell Creek (viz. Ridge n of Willow Creek, near the summit); Northern Coast Ranges, Brannan Mountain, n Willow Creek 1219 Comment
  CAS-BOT-BC156722  Rubus spectabilis Alice Eastwood 1939-3-19 s.n. Humboldt Garden Club of America Grove Comment
  HSC47500  Rubus spectabilis Sheila Logan 1978-4-10 26 Humboldt McKinleyville, foot of Hiller Rd at Ocean Rd., near Pacific ocean and Mad River 46 Comment
  HSC100639  Rubus ursinus Carl C. Marshall Mar 1886 138 Humboldt Everywhere. Comment
  RSA183575  Rubus ursinus R. I. Bonn 1965-4-23 19 Humboldt 4 miles W of Arcata on Lanphere Rd. Comment
  UC1199049  Rubus ursinus J. P. Tracy 1901-6-23 1164 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UCD17620  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 044 Humboldt California. Humboldt County: Ettersburg. Comment
  HSC99000  Rubus ursinus subsp. ursinus Cara Witte 2008-7-16 906 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  HSC17569  Rumex acetosella D. B. Bader 1963-3-1 37 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  HSC51775  Rumex acetosella Overton, Butler 1979-7-24 9644 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  SEINET200758  Rumex acetosella J. P. Tracy 1906-4-22 2414 Humboldt Immediate vicinity of Eureka. 0 Comment
  UC672930  Rumex acetosella Joseph P. Tracy 1932-7-14 10530 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC59582  Rumex acetosella Rick Lundquist 1979-4-24 34 Humboldt SE corner 7th and Union St., Arcata 24 Comment
  CHSC23320  Rumex fueginus Robert F. Thorne; P. Everett 1965-8-9 35329 Humboldt Clam Beach County Park; along highway in shallow water of ditch. 3 Comment
  UC249658  Rumex maritimus Joseph P. Tracy 1921-8-7 5867 Humboldt Stone Lagoon Northern Coast Region 3 Comment
  HSC17617  Rumex obtusifolius David K. Smith 1968-11-20 72 Humboldt At jct. of Old Arcata Rd. and Jacoby Creek Rd. Comment
  HSC17604  Rumex persicarioides D. E. Anderson 1961-9-13 1812 Humboldt Trinidad Beach Comment
  HSC17821  Ruppia cirrhosa Jerry Parker 1968-10-26 212 Humboldt Big Lagoon County Park, Big Lagoon Comment
  CAS-BOT-BC454156  Ruppia maritima Malcom A. Nobs; S. Galen Smith 1949-8-3 1181 Humboldt Near mouth of the Elk River on Highway 101, ca. 4 miles south of Eureka Comment
  SEINET10501996  Ruppia maritima Mary Susan Taylor 1982-10-24 Taylor 5179 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  UC275565  Ruppia maritima Joseph P. Tracy 1923-5-30 6248 Humboldt mouth of Little River; Northern Coast Ranges 1 Comment
  UCD92351  Rytidosperma penicillatum R. Tofsrud 1947-7-1 200 Humboldt near Loleta. Comment
  JEPS51070  Sagina procumbens W. L. Jepson 1921-8-7 9337 Humboldt Stone Lagoon Humboldt Coast, Stone Lagoon Comment
  HSC90251  Salicornia depressa Jean Hanson 1980-8-28 112 Humboldt Indian (Gunther) Island in Humboldt Bay, Eureka, across from Coast Guard Station within 30 ft. of high tide line Comment
  HSC90393  Salicornia depressa Jean Hanson 1980-8-28 113 Humboldt Indian (Gunther) Island in Humboldt Bay, Eureka, across from Coast Guard Station within 30 ft. of high tide line Comment
  CHSC72212  Salicornia virginica Vernon H. Oswald 1998-9-2 9562 Humboldt Humboldt Bay NWR south of Eureka, Hookton Slough Trail on the levee along the south side of Hookton Slough. 0 Comment
  UC55430  Salicornia virginica J. P. Tracy 1901-8-7 1255 Humboldt Samoa Humboldt Bay 0 Comment
  CAS-BOT-BC132666  Salix A. T. Whittemore 1980-3-15 80 -007 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC132711  Salix A. T. Whittemore 1980-3-15 80 -005 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  UC1173613  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14264 Humboldt meadows at Water Dog Lakes; Trinity Summit 1828 Comment
  JEPS12969  Salix exigua Joseph P. Tracy 1931-9-19 9673 Humboldt Alton; Northern Coast Region, Van Duzen River 30 Comment
  POM220141  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 975 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  UC490573  Salix exigua Joseph P. Tracy 1932-7-31 10295 Humboldt mouth of Larrabee Creek Eel R.; Northern Coast Ranges 60 Comment
  UC481302  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 970 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  CAS-BOT-BC104099  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0969 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC104116  Salix hindsiana Henry M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon Comment
  CAS-BOT-BC107738  Salix hookeriana Joseph P. Tracy 1925-4-5 6952 Humboldt Near Loren Frost place on Kneeland Road - Kneeland Prairie 609 Comment
  HSC19965  Salix hookeriana H. E. Parks, S. T. Parks 1932-4-5 1100 Humboldt Little River Comment
  JEPS12947  Salix hookeriana Joseph P. Tracy 1931-10-18 9742 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  JEPS14771  Salix hookeriana Joseph P. Tracy 1933-3-19 10924 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  SBBG59105  Salix hookeriana H. E. Parks 1931-5-12 952 Humboldt Samoa, Humboldt Bay Comment
  UC1196544  Salix hookeriana Joseph P. Tracy 1935-3-3 13715 Humboldt near mouth Mad R. 6 Comment
  UC1196634  Salix hookeriana Joseph P. Tracy 1934-3-10 13161 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC1196678  Salix hookeriana Joseph P. Tracy 1925-11-15 7316 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay (same region as #6929) 60 Comment
  UC1225923  Salix hookeriana Joseph P. Tracy 1942-7-26 17297 Humboldt near the Redwood House S. Yaeger Creek 609 Comment
  UC146207  Salix hookeriana J. P. Tracy 1905-4 2392 /2168 Humboldt Immediate vicinity of Eureka 0 Comment
  UC469125  Salix hookeriana Joseph P. Tracy 1931-8-23 9621 Humboldt sand dunes near Samoa (on Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  UC490459  Salix hookeriana Joseph P. Tracy 1932-5-10 9950 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC518899  Salix hookeriana Jim Davis 1933-4-25 4 Humboldt around Eureka Comment
  UC490517  Salix laevigata var. congesta Joseph P. Tracy 1932-5-22 10122 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  CAS-BOT-BC125224  Salix lasiandra var. lasiandra Harold E. Parks; Susan T. Parks 1932-4-10 01101 Humboldt Little River Lagoon, Trinidad, at sea level Comment
  CAS-BOT-BC128194  Salix lasiandra var. lasiandra Joseph P. Tracy 1933-7-16 12772 Humboldt South Fork Mountain, in wet meadow at McKay Camp 1676 Comment
  HSC96610  Salix lasiandra var. lasiandra Gordon Leppig 2005-4-8 2210 Humboldt Eureka, edge of PALCO Marsh at W end of W Hawthorne St. 3 Comment
  CAS-BOT-BC107593  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1324 Humboldt In dry ravines on west slope of Berry's Mountain, east of Redwood Creek, on Trinity Highway 762 Comment
  CAS-BOT-BC107612  Salix lasiolepis Harold E. Parks 1931-8-25 1059 Humboldt Blue Slide, Van Duzen River 90 Comment
  CAS-BOT-BC107624  Salix lasiolepis Joseph P. Tracy 1932-4-24 9803 Humboldt South Fork of Eel River, between Miranda and Redway 91 Comment
  HSC20023  Salix lasiolepis J. P. Tracy 1933-2-26 10912 Humboldt Miranda, S Fork of Eel River 122 Comment
  HSC98055  Salix lasiolepis Cara Witte 2007-7-11 497 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  JEPS12910  Salix lasiolepis Joseph P. Tracy 1927-3-27 7870 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS12930  Salix lasiolepis Joseph P. Tracy 1931-5-31 9327 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  SBBG57889  Salix lasiolepis H. E. Parks, J. P. Tracy 1931-5-17 976 Humboldt mouth of Willow Crk at Trinity River 150 Comment
  UC1196619  Salix lasiolepis Joseph P. Tracy 1933-7-20 12807 Humboldt Mad River, near Blue Lake 15 Comment
  UC1196660  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1931-5-17 9414 Humboldt thicket near mouth of Willow Creek; Northern Coast Ranges, Willow Creek 152 Comment
  UC471106  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC504031  Salix lasiolepis C. R. Ball, H. E. Parks, and J. P. Tracy 1932-5-17 1338 Humboldt near pond at Willow Creek (Graham Ranch) near junction with Trinity River Comment
  UC506375  Salix lasiolepis Joseph P. Tracy 1933-4-9 10963 Humboldt Bridgeville 228 Comment
  UC506514  Salix lasiolepis B. S. and C. S. Ball 1933-9-12 2531 Humboldt 2 mi. n. Trinidad (at home of Mrs. and Mrs. Harold E. Parks) Comment
  UC512041  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1322 Humboldt Redwood Creek, at Berry's, on Trinity Highway Comment
  UC512043  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1318 Humboldt Redwood Creek, at Berry's, on Trinity Highway Comment
  UC519327  Salix lasiolepis Joseph P. Tracy 1933-5-14 12178 Humboldt mouth of Willow Creek Trinity River Valley 152 Comment
  UC519347  Salix lasiolepis Joseph P. Tracy 1933-10-15 13092 Humboldt along S. Fork Eel R. near Miranda; North Coast Ranges, S. Fork Eel R. 91 Comment
  CAS-BOT-BC107300  Salix lasiolepis var. bigelovii Doris K. Kildale 1926-12-19 2873 Humboldt South Fork 51 Comment
  RSA298153  Salix lucida subsp. lasiandra Thomas W. Nelson 1978-4-23 3888 Humboldt At jct of Copher and Samoa Rds. N of Samoa. Comment
  CAS-BOT-BC125609  Salix melanopsis Joseph P. Tracy 1911-7-4 3295 Humboldt Along Willow Creek (Tributary of Trinity River) near its mouth 182 Comment
  CAS-BOT-BC125614  Salix melanopsis Doris K. Kildale 1925-6-27 765 Humboldt Yager Creek - near mouth 30 Comment
  CAS-BOT-BC125622  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  CAS-BOT-BC125637  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 284 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  JEPS14755  Salix melanopsis Joseph P. Tracy, C. R. Ball, and H. E. Parks 1932-5-17 10095 Humboldt Trinity River near Willow Creek; North Coast Ranges 152 Comment
  LA208881  Salix melanopsis Harold E. Parks; 1931-5-14 965 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  POM89799  Salix melanopsis Joseph P. Tracy 1920-5-31 5334 Humboldt Mouth of Yager Creek. 30 Comment
  SBBG28829  Salix melanopsis H. E. Parks 1931-5-14 964 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  UC1196567  Salix melanopsis Joseph P. Tracy 1932-5-1 9847 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC469460  Salix melanopsis Joseph P. Tracy 1931-10-18 9740 Humboldt on Eel R. Camp Grant; Northern Coast Ranges, Eel R., Camp Grant 60 Comment
  UC481826  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt 6 km. s. Alton (e. of Redwood Hwy.) 20 Comment
  UC490558  Salix melanopsis Joseph P. Tracy 1932-5-10 9960 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC512006  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1232 Humboldt 1 1/2 mi. e. Alton (floodplain of Van Duzen R.); Van Duzen R. 30 Comment
  UC519361  Salix melanopsis Joseph P. Tracy 1933-6-7 12513 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC519369  Salix melanopsis Joseph P. Tracy 1933-7-22 12824 Humboldt S. Fork Eel R. at mouth of Bull Creek; Northern Coast Ranges, S. Fork Eel R. 45 Comment
  HSC96596  Salix scouleriana Gordon Leppig 2003-2-22 1814 Humboldt Eureka Slough, NE corner of log pond 3 Comment
  JEPS13087  Salix scouleriana Joseph P. Tracy 1937-2-21 15230 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  POM209564  Salix scouleriana H. E. Parks 1933-1-24 1352 Humboldt Spruce Grove (Parks Ranch). Trinidad. Comment
  UC1173630  Salix scouleriana Joseph P. Tracy 1937-3-21 15236 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  UC1196699  Salix scouleriana Joseph P. Tracy 1919-9-14 5204 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC519354  Salix scouleriana Joseph P. Tracy 1933-7-11 12706 Humboldt Grouse Mt.; North Coast Ranges, Grouse Mt. 1524 Comment
  UC55955  Salix scouleriana J. P. Tracy 1900-8-5 922 Humboldt immediate vicinity Eureka 0 Comment
  POM219686  Salix sessilifolia H. E. Parks 1931-5-14 964 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  CAS-BOT-BC128957  Salix sitchensis W. R. Dudley 1899-6-21 s.n. Humboldt Bluff below Dyerville on Eel River Comment
  CAS-BOT-BC128963  Salix sitchensis W. J. Ferlatte 1967-6-13 1119 Humboldt Cranell Coastal valley 3 Comment
  HSC90385  Salix sitchensis Jean Hanson 1980-4-12 50 Humboldt Indian (Gunther) Island, Humboldt Bay, W end of island Comment
  UC1196715  Salix sitchensis Joseph P. Tracy 1926-2-21 7363 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC176185  Salix sitchensis Joseph P. Tracy 1913-3-9 4013 Humboldt Van Duzen R. near Hydesville; Northern Coast Region, Van Duzen R. 60 Comment
  CDA39587  Salix sitchensis Gordon Leppig 2005-4-8 2206 Humboldt North Spit Swamp, west side of highway. Comment
  UC585975  Salpichroa origanifolia Joseph P. Tracy 1933-8-22 12972 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC275297  Salsola tragus Joseph P. Tracy 1924-8-31 6838 Humboldt Klamath R. at Bluff Creek; Northern Coast Ranges 91 Comment
  JEPS12746  Sambucus mexicana W. L. Jepson 1932-7-24 16390 Humboldt Mail Ridge 914 Comment
  HSC44536  Sambucus nigra subsp. caerulea Brad Klipfel 1973-7-1 144 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC235119  Sambucus racemosa var. racemosa L. R. Abrams; R. Bacigalupi 1922-6-25 8281 Humboldt Big Lagoon south of Orick Comment
  UC1073331  Sanicula arctopoides George B. Rossbach 1955-6-10 375 Humboldt between Fairhaven and (end of sandy point) off Eureka (near Humboldt Bay (lagoon) and lighthouse) 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
  HSC21626  Sanicula bipinnatifida D. E. Anderson 1962-5-1 2194 Humboldt 1 mi. E of junction of Redwood Creek road and road to Hoopa Comment
  UC642319  Sanicula laciniata Joseph P. Tracy 1938-3-27 15701 Humboldt along South Fork of Eel River, Miranda South Fork Eel River; , Miranda 121 Comment
  JEPS949  Sanicula tuberosa Joseph P. Tracy 1923-7-4 6528 Humboldt Northern Coast Ranges, Valley of South Yager Creek Valley of South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  UC314593  Sanicula tuberosa Joseph P. Tracy 1923-7-4 6528 Humboldt Northern Coast Ranges, Valley of South Yager Creek South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  UC1198885  Saxifraga aprica Joseph P. Tracy 1935-7-28 14313 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1828 Comment
  UC492224  Saxifraga californica Joseph P. Tracy 1927-4-10 7896 Humboldt near the South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC441186  Saxifraga mertensiana Lincoln Constance; Reed C. Rollins 1942-5-11 2869 Humboldt Three miles west of East Fork of Willow Creek Comment
  JEPS47544  Saxifraga mertensiana Joseph P. Tracy 1922-4-30 6009 Humboldt mouth of South Fork Trinity River (Martin Ranch); Northern Coast Ranges, , Martin Ranc 152 Comment
  JEPS79979  Saxifraga mertensiana Joseph P. Tracy 1927-4-2 7884 Humboldt South Fork Eel River between Miranda and Redway; North Coast Ranges, South Fork Eel River 91 Comment
  HSC101990  Saxifraga nidifica M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 889 Humboldt Patterson Meadows 1555 Comment
  HSC21646  Scandix pecten-veneris Richard Steele 1962-4-9 15 Humboldt 1/2 mi. W of Humboldt State campus 15 Comment
  RSA366412  Schoenoplectus pungens Joseph P. Tracy 1914-5-30 s.n. Humboldt North Coast, near Hydesville Comment
  UC1103629  Scirpus cernuus Joseph P. Tracy 1926-8-29 7779 Humboldt near Samoa (on shore around Humboldt Bay); Northern Coast Region, Humboldt Bay, near Samoa 3 Comment
  CAS-BOT-BC84074  Scirpus criniger H. N. Bolander 1867-6-1 6475 Humboldt Red Mts. Comment
  BLMAR463  Scirpus microcarpus Jennifer Anthony-Wheeler 2007-8-9 463 Humboldt Samoa Peninsula, growing on Lanphere road 12 Comment
  UC774886  Scirpus microcarpus Carl B. Wolf 1937-9-11 9324 Humboldt Redwood Highway 3 mi n Orick (at Davison's Ranch on Prairie Creek); n of Orick at Davison's Ranch on Prairie Creek 60 Comment
  SEINET12050495  Scoliopus bigelovii F. H. Utech 1988-1 88 -293 Humboldt 11 mi from Bridgeville on Bridgeville-Kneeland Road, along Yager Creek, SE of Lone Star Junction 775 Comment
  SEINET12050497  Scoliopus bigelovii F. H. Utech 1988-1 88 -281 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, mile marker 42.00, above Van Duzen River 800 Comment
  SBBG52998  Scrophularia californica J. D. Hobson -Jul-1966 Humboldt S end of sand spit forming Eureka Harbor, 10 mi S of Eureka; Loleta Comment
  HSC56459  Scutellaria antirrhinoides Griswold, Butler 1979-7-12 7236 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC97100  Scutellaria antirrhinoides Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 4 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1364 Comment
  UC1239705  Scutellaria antirrhinoides Joseph P. Tracy 1927-7-24 8296 Humboldt Mattole Valley 152 Comment
  UC175798  Scutellaria antirrhinoides Joseph P. Tracy 1912-7-26 3842 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC416677  Scutellaria antirrhinoides M. H. Manning 1901-5-26 93 Humboldt near Hupa Comment
  UC1225840  Scutellaria antirrhinoides Joseph P. Tracy 1942-6-15 17167 Humboldt 5 mi n of Garberville 152 Comment
  UCD125672  Scutellaria antirrhinoides John M. Tucker 1948-9-3 1854 Humboldt On ridge between Horse and Grouse Mountains. 1463 Comment
  UC32583  Scutellaria siphocampyloides Chesnut and Drew 1888-7-29 Humboldt Louse Creek Comment
  RSA183621  Scutellaria tuberosa D. E. Anderson 1965-5-8 3644 Humboldt About 2 miles north of Willow Creek on road running along east side of Trinity River. Comment
  UC1239711  Scutellaria tuberosa Joseph P. Tracy 1939-5-14 16296 Humboldt along Van Duzen River (Dinsmore's); , Dinsmore's 746 Comment
  SD51705  Sedum laxum subsp. heckneri Joseph P. Tracy 1948-9-5 18190 Humboldt On rock ledge at top of ridge, 1.0 mile south of Grizzly Camp. 1370 Comment
  UC169908  Sedum laxum subsp. heckneri Harley P. Chandler June, 1901 1439 Humboldt Klamath River North Coast Ranges, Klamath River 304 Comment
  JEPS48016  Sedum obtusatum Joseph P. Tracy 1926-6-20 7647 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
Read comments
Aug 17 2011
  UC302107  Sedum radiatum Joseph P. Tracy 1926-7-5 7726 Humboldt Valley of South Yager Creek Northern Coast Ranges, Valley South Yager Creek 762 Comment
  CAS-BOT-BC63827  Sedum spathulifolium L. R. Abrams 1922-6-25 8294 Humboldt Bluffs north of Big Lagoon. Comment
  JEPS25692  Sedum spathulifolium P. C. Hutchison 1961-5-22 2017 Humboldt along s side Willow Creek (n side hiway US 299, 2.6 mi e of Berry Summit); e of Berry Summit, s side Willow Creek Comment
  UC1198832  Sedum spathulifolium Joseph P. Tracy 1911-7-4 3298 Humboldt along Willow Creek Northern Coast Ranges, Willow Creek, trib Trinity River (tributary of Trinity River near its mouth) 182 Comment
  HSC100143  Selaginella kraussiana G. F. Hrusa, R. Bencie, L. Bencie, C. Dogwin, and E. Dogwin 2010-12-29 18277 Humboldt Forest E of Humboldt State University, above Fern Lake 47 Comment
  SEINET10666322  Selaginella wallacei Daniel K. Harder 1994-10-4 Harder 2490 Humboldt Ca. 6 km W/SW of Fort Seward along Fort Seward Road along middle ridge (near powerlines), collections from rock outcrops in cattle pasture with islands of redwoods and Umbellaria; near small spring in hillside. 570 Comment
  HSC98904  Selaginella wallacei Cara Witte 2008-6-7 686 Humboldt Horse Mountain Botanical Area. 1/4 mile west of intersection between National Forest 1 and Forest Service Roads 6N36, 6N38. 1426 Comment
  RSA275307  Senecio elegans Thomas W. Nelson 1978-4-23 3880 Humboldt Adventive on coastal dunes northwest of Samoa Comment
  JEPS37418  Senecio glomeratus W. L. Jepson 1932-8-8 16534 Humboldt Dyerville Perrott Creek, Dyerville 304 Comment
  HSC70329  Senecio integerrimus M. A. Baker 1980-6-8 1884 Humboldt Near Buck Flat. 1554 Comment
  HSC34961  Senecio integerrimus var. major Thomas W. Nelson 1975-5-24 1873 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC169342  Senecio integerrimus var. major Joseph P. Tracy and Ernest B. Babcock 1912-5-12 3632 Humboldt near Bucksport; Northern Coast Region, Eureka 0 Comment
  UC91378  Senecio integerrimus var. major Harley P. Chandler June 1901 1274 Humboldt Hupa Indian Reservation North Coast Ranges 1036 Comment
  UC1223155  Senecio integerrimus var. major Joseph P. Tracy 1950-5-6 18638 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1118081  Senecio minimus H. L. Person 1932-7-23 Humboldt Korbel Eureka Quad., Korbel Comment
  HSC102003  Senecio triangularis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 904 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC100715  Senecio triangularis Carl C. Marshall Jul 1886 330 Humboldt Trinity Mtns. E of Hoopa. Comment
  UC1199237  Senecio vulgaris Joseph P. Tracy 1918-4-21 4880 Humboldt on old Kneeland Prairie Road near Newell's Camp (around Humboldt Bay); Northern Coast Ranges, around Humboldt Bay 304 Comment
  SEINET11737926  Sequoia sempervirens K. S. Erdman 1970-1 4840 Humboldt Redwood Creek, about 2-3 mi above the road end, near McArthur and Elam Creeks, Redwood Nat'l Park Comment
  SEINET11739295  Sequoia sempervirens R. J. Mastrogiuseppe 1966-1 s.n. Humboldt Founders' Grove, Humboldt Redwoods State Park Comment
  SEINET3876370 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1966-1-16 s.n. Humboldt Along State Route 299 from Arcata to Redding, Demonstration Forest, Simpson Timber Company.; 0 Comment
  HSC19860  Sherardia arvensis Paul Shields May 1955 Humboldt Horse Mountain Comment
  CAS-BOT-BC205570  Sidalcea malachroides A. M. Vollmer; L. Beane 1951-6-11 136 Humboldt Yager Creek Road, on way to Carlotta Comment
  UC1197967  Sidalcea malachroides Joseph P. Tracy 1918-6-9 4952 Humboldt at Eureka; Northern Coast Ranges, at Eureka 0 Comment
  CAS-BOT-BC205569  Sidalcea malachroides Volney Rattan 1878-1-1 s.n. Humboldt Redwood Cr. Comment
  HSC62693  Sidalcea malviflora Michelle Stevens 1979-5-25 139 Humboldt Junction of Hwy. 96 and the GO Rd. 640 Comment
  SEINET11982179  Sidalcea malviflora J. P. Tracy 1950-1 18738 Humboldt 7 mi S of Ferndale, Bear River Ridge 610 Comment
  UC668141  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  UC668143  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-8-22 15671 Humboldt 2 mi s Fields Landing (at Still Ranch); s of Fields Landing, at Still Ranch 6 Comment
  HSC57879  Sidalcea oregana subsp. spicata Overton, Butler 1979-7-31 11416 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC1602151  Sidalcea oregana subsp. spicata Joseph P. Tracy 1919-9-18 5253 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit (along streams in meadows) 1524 Comment
  HSC103134  Silene bolanderi M. Mesler 2010-5-30 818 Humboldt Rd from Hwy 3 to Wildwood, near Gemmill Gulch 1003 Comment
  HSC103774  Silene bolanderi M. R. Mesler 2014-6-4 1636 Humboldt Burr Valley Road near Dinsmore 1117 Comment
  UC1137920  Silene californica H. S. Yates 1936-6-23 5874 Humboldt 4 mi nne Cathay Peak; Dyerville Quad., nne of Cathay Peak Comment
  UC1198361  Silene californica Joseph P. Tracy 1948-8-8 18096 Humboldt Iaqua 609 Comment
  RSA477842  Silene californica M. O'Mera 1972-6-8 78 Humboldt Along Bald Hills Rd. ca. 16.4 miles E of junction with U.S. 101. Comment
  UC1198352  Silene campanulata Joseph P. Tracy 1947-7-9 17852 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1432 Comment
  CAS-BOT-BC174878  Silene campanulata subsp. glandulosa Carl B. Wolf 1927-8-27 1155 Humboldt On the Klamath River 2 mi. below the Salmon River Comment
  CAS-BOT-BC174881  Silene campanulata subsp. glandulosa Volney Rattan 1903-1-1 s.n. Humboldt Hoopa Valley Comment
  UC183591  Silene campanulata subsp. glandulosa Joseph P. Tracy 1913-6-15 4140 Humboldt near summit of ridge between Van Duzen and Mad Rivers (on Dinsmore's Ranch); Northern Coast Ranges, btw Van Duzen and Mad Rivers 1066 Comment
  SEINET3823279 Image available Silene hookeri Joseph P. Tracy 1913-6-20 4234 Humboldt Lower foothills of Buck Mountain 762 Comment
  CAS-BOT-BC389050  Silene laciniata subsp. californica J. H. Thomas 1949-6-14 924 Humboldt Salmon River Valley near its junct. with Klamath River Comment
  CAS-BOT-BC364798  Silybum marianum Doris K. Kildale 1926-7-14 2376 Humboldt Trinidad Comment
  UC1198282  Sinapis arvensis J. P. Tracy 1906-6-20 2494 Humboldt immediate vicinity of Eureka 0 Comment
  SEINET6883434  Sisyrinchium bellum Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, near serpentine outcrops, about 4 miles sou theast of Kneeland. Comment
  HSC96472  Sisyrinchium californicum Gordon Leppig 1997-6-19 461 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UCD126814  Solanum americanum Robert F. Thorne; P. Everett 1965-8-5 35147 Humboldt Samoa Dunes. 3 Comment
  RSA424568  Solanum americanum T. S. Elias, Barbara A. Elias 1987-8-26 10629 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge Comment
  HSC59024  Solanum parishii M. A. Baker 1979-6-7 784 Humboldt N bank of road to Snow Mtn. 610 Comment
  UC902078  Solanum umbelliferum Joseph P. Tracy 1949-5-8 18293 Humboldt 5 mi e (of town) Carlotta (by old Strong's District School House) 60 Comment
  JEPS32394  Solidago elongata Lincoln Constance 1934-6-25 925 Humboldt on Redwood Highway 4 mi n of Dyerville and n boundary Humboldt Redwood Park (Englewood, Bull Creek Region, South Fork Eel River); South Fork Eel River, Bull Creek Region, Englewood Comment
  UC524127  Solidago elongata Ira L. Wiggins 1932-7-25 5895 Humboldt near McKinleyville Comment
  UC581770  Solidago elongata Joseph P. Tracy 1927-8-22 8346 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  CHSC109579  Solidago spathulata B. Castro; L. P. Janeway 2004-9-10 1474 Humboldt North Coast. South Spit of Humboldt Bay, 2.2 mi NNE of Table Bluff Lighthouse site: on other side of South Spit Road from the Humboldt Bay mudflats. 2 Comment
  CHSC52926  Soliva sessilis L. P. Janeway; Ken Berg 1984-4-11 721 Humboldt On the North Spit of Humboldt Bay; at the turnout along Samoa Rd across from the boat ramp just north of he Coast Guard Sta. 3 Comment
  HSC37995  Sonchus asper Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  UC164790  Sonchus asper J. P. Tracy 1903-8-2 1925 Humboldt immediate vicinity Eureka 0 Comment
  UC582437  Sonchus asper Joseph P. Tracy 1936-8-24 15177 Humboldt 6 mi se Arcata (Fickle Hill); Fickle Hill 609 Comment
  JEPS37532  Sonchus oleraceus Lincoln Constance 1934-6-3 797 Humboldt foot of bank along n side Redwood Highway at Dyerville (South Fork Eel River, Bull Creek Region); Bull Creek Region, South Fork Eel River Comment
  RSA245275  Sonchus oleraceus Brad W. Klipfel 1973-8-17 281 Humboldt Big Lagoon Co. Park. Comment
  HSC21345  Sparganium angustifolium Paul Shields 1955-9-23 Humboldt 5 mi. SE of Arcata Comment
  HSC89260  Spartina alterniflora Anni Eicher 1989-4-20 366 Humboldt .5 mi. N of Samoa-Eureka bridge, E of State Hwy. 255, Humboldt Bay Comment
  CAS-BOT-BC236608  Spartina foliosa W. A. Silveus 1938-7-10 2966 Humboldt Eureka Comment
  SEINET10968195  Spartina foliosa A. Arthur Heller 1924-7-21 Heller 13871 Humboldt In a salt marsh at Eureka Comment
  CDA3451  Spergula arvensis T. C. Fuller 1961-9-28 7061 Humboldt 1.5 miles south of Samoa. 0 Comment
  HSC90259  Spergularia macrotheca Jean Hanson 1980-6-22 86 Humboldt Indian (Gunther) Island. In Humboldt Bay, city of Eureka. W end of Island. Comment
  HSC70955  Spergularia rubra Thomas W. Nelson 1977-6-15 3430 Humboldt Along FS Rd. 6N01 about 1 mi. S of junction with FS Rd. 5N10 1372 Comment
  CAS-BOT-BC149613  Spiraea douglasii Malcom A. Nobs; S. Galen Smith 1949-8-9 1226 Humboldt 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley Comment
  UCD114050  Spiraea douglasii Linda M. Barker 1976-6-14 1600 Humboldt 3 miles west of Arcata. Comment
  HSC36653  Spiranthes romanzoffiana J. D. Ackerman 1975-8-2 618 Humboldt Hwy. 101 between Eureka and Arcata, along Humboldt Bay across from Murray Field. Comment
  UC144106  Spiranthes romanzoffiana Joseph P. Tracy 1909-8-29 3086 Humboldt Humboldt Hill Northern Coast Region, Region about Humboldt Bay (near Field's Landing) 0 Comment
  BLMAR739  Stachys ajugoides Jennifer Wheeler 2015-5-12 739 Humboldt King range, Telegraph ridge btwn Oat and Spanish 670 Comment
  UC1239731  Stachys ajugoides var. rigida Joseph P. Tracy 1949-7-7 18334 Humboldt Table Bluff 91 Comment
  UC726345  Stachys ajugoides var. rigida A. A. Heller 1923-7-8 13769 Humboldt near Pepperwood Comment
  UC668221  Stachys ajugoides var. rigida Joseph P. Tracy 1938-8-21 16132 Humboldt in front of s end Stone Lagoon (along coast); Dry Lagoon 3 Comment
  UCLA70844  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15931 Humboldt Fortuna 18 Comment
  UCLA70885  Stachys ajugoides var. rigida C. Epling Jun 1938 Humboldt Williams Grove of Redwoods Comment
  UC1239723  Stachys arvensis H. B. Tucker 1935-3-20 Humboldt Moron Ranch Arcata Bottom 9 Comment
  HSC14406  Stachys arvensis William J. Ferlatte 1963-5-5 33 Humboldt Near 11th and B St. Arcata Comment
  HSC100512  Stachys bullata Carl C. Marshall May 1885 77 Humboldt Thickets, roadsides, etc. Comment
  HSC89498  Stachys chamissonis P. A. Daly 1984-5-6 2 Humboldt Trinidad Head 61 Comment
  BLMAR315  Stachys chamissonis Jennifer Anthony-Wheeler 2002-8-9 315 Humboldt Lost Coast Headland 121 Comment
  RSA0074167  Stachys chamissonis T. S. Elias, Barbara A. Elias 1987-8-26 10631 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge. Comment
  RSA33417  Stachys emersonii Carl B. Wolf 1937-8-13 9246 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on new road towards Trinity Summit. 1524 Comment
  HSC23710  Stachys rigida Tim Baroni 1971-6-25 38 Humboldt Comment
  HSC34274  Stachys rigida var. rigida K. Irwin 1975-8-13 Humboldt Grogans Hole area Comment
  SDSU7951  Stachys rigida var. rigida D. F. Howe 1964-8-7 3943 Humboldt Hoopa Valley 1067 Comment
  UCD99346  Stellaria crispa Joseph P. Tracy 1943-3-21 17411 Humboldt Scotia. 30 Comment
  HSC75438  Stellaria media J. O. Sawyer 1980-7-18 3580 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  RSA254758  Stephanomeria virgata Thomas W. Nelson 1973-9-3 1122 Humboldt McKeown Ranch north of Dinsmore Comment
  HSC40578  Stipa lemmonii Thomas W. Nelson, Jane P. Nelson 1976-6-22 2870 Humboldt SW facing slope on Goat Hill. 1666 Comment
  HSC44068  Streptanthus breweri Thomas W. Nelson, Jane P. Nelson 1977-7-1 3543 Humboldt Ridge N side of Bear Creek, 100 m W of FS Rd. 1S07 Comment
  HSC103087  Streptanthus tortuosus Sydney Carothers 2014-6-22 7 Humboldt Six Rivers National Forest, Lassics Botanical Area; on saddle between Peak 1 and Mt. Lassic 1796 Comment
  HSC57118  Streptanthus tortuosus Walter Overton, Marvin Butler 1979-7-25 9863 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC70349  Streptanthus tortuosus M. A. Baker 1980-6-7 1812 Humboldt Near Brush Mtn. 1128 Comment
  UC1198798  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1913-6-17 4165 Humboldt near summit Northern Coast Ranges, Buck Mountain 1524 Comment
  UC184371  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1912-7-26 3843 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CDA25184  Streptanthus tortuosus var. tortuosus Kaylea Eickhoff, Cara M. Witte 2005-6-8 4 Humboldt Northwestern California; 1.7 miles south of Highway 299 on Titlow Hill Road. Comment
  HSC57457  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-7-26 10288 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC17760  Stuckenia pectinata Rollin Sparrowe 1962-5-16 25 Humboldt S of road Comment
  UC22723  Swertia albicaulis var. nitida J. Burtt Davy 1899-6-21 5737 Humboldt e slope Hoopa Mt. (on the borders of Supply Creek); North Coast Ranges, , Supply Creek Comment
  HSC34130  Swertia radiata J. O. Sawyer 1970-6-24 2285 Humboldt Near Waterdog Lakes 1860 Comment
  RSA245237  Symphoricarpos albus var. laevigatus Tim Baroni 1971-7-6 112 Humboldt Appox. 2 miles S of Ferndale on Mattole road. Comment
  UC602517  Symphoricarpos mollis Joseph P. Tracy 1932-7-11 10415 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  UCD137442  Symphoricarpos mollis Joseph P. Tracy 1948-8-15 18144 Humboldt Trinity Summit. On ridge 2 miles east of Grove's Prairie. 1524 Comment
  CHSC68779  Symphyotrichum chilense Vernon H. Oswald 1997-6-5 8539 Humboldt Samoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. 6 Comment
  HSC36040  Symphyotrichum chilense Thomas W. Nelson 1975-9-24 2199 Humboldt Beside Indianola Rd., ca. 1/2 mi. E of its junction with Hwy. 101 Comment
  CAS-BOT-BC99005  Symphyotrichum eatonii Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC98974  Symphyotrichum foliaceum var. parryi Doris K. Kildale 1925-8-17 1218 Humboldt Trinity Summit near Ranger Station 1828 Comment
  HSC102209  Symphyotrichum hendersonii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1124 Humboldt Andy's Camp 1564 Comment
  HSC91945  Synthyris reniformis E. Mackey 1987-3-1 Humboldt Patrick's Point State Park, Big Meadow, next to copse Comment
  HSC6244  Tanacetum bipinnatum Paul Shields 1955-9-17 Humboldt 1/2 mi. S of mouth of Mad River Comment
  UC166081  Tanacetum camphoratum J. P. Tracy 1909-7-18 3020 Humboldt opposite Eureka (ocean beach at Samoa); Samoa Comment
  CDA8893  Tanacetum camphoratum K. Neander, Gordon Leppig, Sylvia Leppig 1998-5-25 789 Humboldt Big Lagoon State Park, between ocean and Big Lagoon. Comment
  RSA28303  Tanacetum camphoratum E. K. Balls, Percy C. Everett 1953-10-11 18636 Humboldt Big Lagoon on South Shore. 2 Comment
  RSA47122  Tanacetum camphoratum Doris K. Kildale 1925-7-2 912 Humboldt Table Bluff beach. Comment
  UCR48591  Tanacetum douglasii R. D. Goeden, Don W. Ricker 1987-9-2 870902- 17 Humboldt North Coast, Loleta, at bay on Cannibal Road 3 Comment
  UC1223146  Taraxacum officinale Joseph P. Tracy 1948-5-15 17973 Humboldt Willow Creek Trinity River Comment
  HSC6258  Taraxacum officinale Richard Steele 1962-3-4 3 Humboldt 1/2 mi. W of HSC campus 15 Comment
  HSC98504  Taxus brevifolia Cara Witte 2008-8-6 1000 Humboldt Board Camp Mountain; 1 mile south of Forest Service Road 4N38 and National Forest 1 intersection. 1416 Comment
  CAS-BOT-BC85212  Taxus brevifolia G. A. Coleman 1901-7-28 s.n. Humboldt Near Baise Creek Comment
  CAS-BOT-BC447404  Tellima grandiflora Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC56216  Tellima grandiflora G. L. Clifton, Griswold 1979-8-2 12229 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1198892  Tellima grandiflora Joseph P. Tracy Jul 16 1930-Jul 19 1930 9087 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  RSA120721  Tellima grandiflora S. S. Tillett 1956-7-5 604 Humboldt Along State Hwy 96, above Klamath River, 2 miles S of Orleans. 152 Comment
  UC1222570  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1950-7-6 18986 Humboldt Burr Valley Buck Mountain (nw slope of mt., lower end of valley) 1066 Comment
  HSC28198  Thalictrum polycarpum Thomas W. Nelson 1971-5-31 454 Humboldt Adjacent to the Mad River N of Dinsmore Comment
  UC667955  Thelypteris nevadensis Joseph P. Tracy 1937-7-25 15556 Humboldt ne of Hawkins Bar (Happy Camp Mt.); Trinity Summit Range 1280 Comment
  UC1198812  Thlaspi montanum var. montanum Joseph P. Tracy 1911-7-11 3516 Humboldt hills along Supply Creek (Hupa Valley); Northern Coast Ranges, , Supply Creek 304 Comment
  CAS-BOT-BC81310  Thuja plicata Carl B. Wolf 1930-10-25 1764 Humboldt 9 miles above Blue Lake along road to Willow Creek (Lord Ellis Road) 243 Comment
  HSC1301  Thuja plicata Allan R. Marshall 1962-5-20 23 Humboldt Blue Lake along Hwy. 299 46 Comment
  NY17196  Thuja plicata A. Kellogg 1868-1 933 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY17205  Thuja plicata A. Kellogg 1868-1 933 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET3866799  Thuja plicata Lewis S. Rose 1966-6-26 66039 Humboldt Us Highway 299. 10 mi east of Blue Lake.; 0 610 Comment
  UC615042  Thuja plicata Beryl O. Schreiber 1934-6-5 1132 Humboldt 5 mi e of Blue Lake (road to Redding, wooded slope) Comment
  JEPS49705  Tiarella trifoliata var. unifoliata W. L. Jepson 1932-7-26 16417 Humboldt Bull Creek Comment
  RSA246663  Tiarella trifoliata var. unifoliata R. F. Thorne, Percy C. Everett 1965-8-4 35127 -b Humboldt Wailaki Recreation site. 518 Comment
  UC11936  Tiarella trifoliata var. unifoliata J. Burtt Davy 1899-6-19 5650 Humboldt Hoopa Mt. North Coast Ranges, summit Hoopa Mt. (at the summit) Comment
  HSC74725  Torilis arvensis Gail Newton 1981-8-6 2411 Humboldt Near Mad River. 1308 Comment
  UC727683  Torilis arvensis Milo S. Baker 1946-6-15 11484 Humboldt Trinity Hwy, Berry's Mt. Comment
  UC1199328  Tracyina rostrata Joseph P. Tracy 1938-6-9 15975 Humboldt about 1 mi sw Alder Point (town) 304 Comment
  JEPS60737  Trautvetteria caroliniensis Joseph P. Tracy 1937-7-2 15387 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain Comment
  HSC74426  Triantha glutinosa Gail Newton 1980-8-10 2055 Humboldt Near Blake Mtn. 1707 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
  UC535719  Trichostema lanceolatum Eleanor Armstrong 1934-7-15 1128 Humboldt Richardson Grove 121 Comment
  HSC73246  Trientalis latifolia M. Baker 1980-5-18 1326 Humboldt Near Black Mtn. 1006 Comment
  RSA460856  Trientalis latifolia Jane Turner, Francis M. Ball 1962-7-10 1139 Humboldt East Fork Willow Creek Forest Camp, Hwy 299 ca. 5 mi. W of Willow Creek in Six Rivers National Forest. 457 Comment
  HSC48609  Trientalis latifolia Mark Flippo 1978-4-8 3 Humboldt McKinleyville; Bella Vista Hill Comment
  UC180224  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1914-5-14 4452 Humboldt Fort Seward 121 Comment
  UC33445  Trifolium barbigerum Joseph Burtt Davy and Walter C. Blasdale 1899-5 5684 Humboldt Hoopa Mtn Comment
  HSC45121  Trifolium bifidum R. Sutherland 1978-5-19 17 .19578 Humboldt 183 Comment
  UC1197186  Trifolium bifidum var. bifidum Joseph P. Tracy 1925-6-7 7080 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1223502  Trifolium bifidum var. decipiens Joseph P. Tracy 1939-4-29 16256 Humboldt 2 mi below Orleans (nw side); Klamath River 121 Comment
  UC162856  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1906-6-10 2476 Humboldt Kneeland Prairie Northern Coast Ranges, Eureka 762 Comment
  RSA168900  Trifolium dichotomum Joseph P. Tracy 1943-5-23 17426 Humboldt Trinity HIghway, east of Redwood Creek; Berrys Mountain. Comment
  JEPS79998  Trifolium dubium Joseph P. Tracy 1925-5-17 6971 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC149767  Trifolium dubium Harley P. Chandler May 1901 1127 Humboldt Eureka North Coast Ranges, Humboldt Bay 30 Comment
  UCD108946  Trifolium fragiferum P. B. Kennedy 1929-6-14 10326 Humboldt Eureka. Niles Ranch. Comment
  HSC71441  Trifolium fucatum J. P. Smith 1971-10-9 5044 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC1223454  Trifolium gracilentum Joseph P. Tracy 1934-5-13 13203 Humboldt near Samoa Comment
  UC162782  Trifolium hybridum J. P. Tracy 1904-7-3 2108 Humboldt vicinity Eureka 0 Comment
  UC33425  Trifolium longipes var. elmeri Chesnut and Drew 1888-8-1 Humboldt S. Fork of Trinity Comment
  UC1223370  Trifolium longipes var. hansenii Joseph P. Tracy 1950-8-8 19298 Humboldt Croghan Hole Trinity Summit 1676 Comment
  HSC45141  Trifolium microcephalum R. Sutherland 1978-5-16 5 .16578 Humboldt 157 Comment
  POM277936  Trifolium pratense Lyman D. Benson 1928-7-10 426 Humboldt Fortuna 30 Comment
  HSC38329  Trifolium repens Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  HSC45167  Trifolium repens R. Sutherland 1978-5-16 8 .16578 Humboldt 157 Comment
  RSA293197  Trifolium repens J. P. Smith 1973-5-26 6822 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UCD109391  Trifolium subterraneum R. Tofsrud 1949-7-1 s.n. Humboldt Talarook, Hydesville. Comment
  HSC45129  Trifolium variegatum R. Sutherland 1978-6-1 1 .1678 Humboldt 282 Comment
  UC1197553  Trifolium variegatum var. melananthum Joseph P. Tracy 1930-5-18 8695 Humboldt Roseville golf course Northern Coast Ranges 152 Comment
  UC495677  Trifolium variegatum var. variegatum Joseph P. Tracy 1929-5-5 8573 Humboldt along South Fork of Eel River (Miranda); Northern Coast Ranges 121 Comment
  UC1223528  Trifolium variegatum var. variegatum Joseph P. Tracy 1937-7-19 15460 Humboldt lower foothills nw slope; Buck Mtn 914 Comment
  UC175673  Trifolium variegatum var. variegatum Joseph P. Tracy 1913-6-20 4232 Humboldt n w slope Buck Mtn (lower foothills); Northern Coast Ranges 762 Comment
  JEPS4388  Trifolium willdenovii W. L. Jepson 1934-5-7 16686 Humboldt Dyerville Comment
  HSC15172  Trifolium willdenovii D. E. Anderson 1962-5-1 2191 Humboldt Junction of Redwood Creek Rd. and rd. to Hoopa Comment
  HSC15180  Trifolium willdenovii Eugene Andreuccetti 1964-5-2 46 Humboldt Grounds of Tish-Tang Ranger Station Comment
  UC495692  Trifolium willdenovii Joseph P. Tracy 1932-6-14 10157 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UCD109897  Trifolium willdenovii Joseph P. Tracy 1933-6-24 12615 Humboldt North end of Big Lagoon. Comment
  HSC40959  Trifolium wormskioldii Linda M. Barker 1976-6-1 1547 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  RSA167422  Trifolium wormskioldii Joseph P. Tracy 1938-6-12 16056 Humboldt Fields Landing. Moist flats along edges of foothills, 2 miles south of town. 6 Comment
  RSA181629  Trifolium wormskioldii Doris K. Niles 1950-6-1 8 Humboldt Island in Eel River, Niles field. Comment
  HSC14167  Triglochin maritima S. J. Moore 1965-5-8 15 Humboldt Marsh adjacent to Mad River Slough. Comment
  CHSC2321  Trillium ovatum V. Holt 1933-4-11 Humboldt Comment
  UC1197824  Trillium ovatum Mrs. Harriet Tracy 1909-3-5 Humboldt near Hydesville Hydesville; Northern Coast Region 60 Comment
  UC275520  Trillium ovatum Joseph P. Tracy 1923-4-15 6186 Humboldt Redwood Creek at Berry's; Northern Coast Ranges, Redwood Creek 274 Comment
  CAS-BOT-BC133392  Trillium ovatum R. N. Raynor 1934-4-1 s.n. Humboldt Above Fort Seward Comment
  RSA249440  Trillium ovatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5608 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC49797  Trillium ovatum subsp. ovatum R. York 1979-4-9 215 Humboldt Behind HSU campus Comment
  UC602558  Triodanis perfoliata Joseph P. Tracy 1932-6-14 10154 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, at Willow Creek 152 Comment
  UC1334891  Triphysaria eriantha subsp. eriantha L. D. Thurman 1965-4-8 626 Humboldt 4.4 mi s Samoa; s of Samoa Comment
  UC902255  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1944-5-14 17465 Humboldt at Bucksport (near Eureka); , at Bucksport 6 Comment
  UC1222437  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1942-5-29 17088 Humboldt Eureka 6 Comment
  UC1222443  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1935-5-25 13851 Humboldt Fort Seward 106 Comment
  HSC40953  Triphysaria versicolor subsp. versicolor Linda M. Barker 1976-4-30 1424 Humboldt 3 mi. W of Arcata Comment
  CAS-BOT-BC199619  Trisetum canescens J. P. Tracy 1903-5-22 1877 Humboldt Alder Point on Eel River 152 Comment
  UC1103150  Trisetum canescens J. P. Tracy 1900-7-4 877 Humboldt opposite Eureka (Sand Hills of Ocean Beach at Samoa); Samoa Comment
  SEINET244120 Image available Trisetum cernuum Joseph P. Tracy 1918-4-21 4881 Humboldt Openings in moist woods 'Newell's Camp' on old Kneeland Prairie Road. 305 Comment
  UC922032  Trisetum cernuum Joseph P. Tracy 1950-7-2 18962 Humboldt 6 mi ne Hawkins Bar (in woods at Fern Spring); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  SEINET8719521 Image available Trisetum cernuum Unknown 1952-1 7551 Humboldt Spruce Grove, Trinidad. Comment
  SEINET200769  Triteleia bridgesii Joseph P. Tracy 1949-6-25 18345 Humboldt Trinity Summit Mud Springs in serpentine area 1341 Comment
  SD649  Triteleia laxa Mary S. Snyder 1894-5-14 Humboldt Eel River. 320 Comment
  UCD18588  Triteleia laxa Roman Gankin 1956-3-17 108 Humboldt off US Hwy 101, south boundary of Jenson Grove, near creek. Comment
  SEINET200846  Triticum aestivum J. P. Tracy 1922-7-16 6102 Humboldt CULTIVATED; Eureka 0 Comment
  HSC28304  Tsuga heterophylla Gary S. Lester 1973-12-8 61 Humboldt E of HSC Campus Comment
  HSC96520  Tsuga heterophylla Gordon Leppig 1999-7-9 1190 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  RSA1916  Tsuga heterophylla C. B. Wolf 1930-10-25 1763 Humboldt 12 miles above Blue Lake along Blue Lake to Willow Creek Road (Lord Ellis Road). 305 Comment
  SDSU2008  Tsuga heterophylla D. F. Howe 1963-7-7 3616 Humboldt 5 miles north of Orick on #101. Comment
  UC1134186  Tsuga heterophylla H. S. Yates 1936-6-18 5738 Humboldt 10 mi s of the Klamath River Orick Quadrangle 60 Comment
  UC484080  Tsuga heterophylla Carl B. Wolf 1930-10-25 1763 Humboldt 12 mi above Blue Lake (along Blue Lake to Willow Creek Road (Lord Ellis Road)) 304 Comment
  UC672889  Tsuga heterophylla Joseph P. Tracy 1940-8-25 16704 Humboldt Bald Mountain Bald Mountain (in forest mainly of Douglas Fir, in cold shaded gulches) 914 Comment
  UCD67633  Tsuga heterophylla D. Sanchez-Mata 1996-6-27 s.n. Humboldt Blue Lake. Mad River. 175 Comment
  UC55663  Tsuga mertensiana J. P. Tracy 1901-2-3 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC73931  Turritis glabra Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mountain Trail. 1371 Comment
  JEPS65676  Ulex europaeus Joseph P. Tracy 1923-11-24 6594 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC1196283  Umbellularia californica Joseph P. Tracy 1920-10-24 5405 Humboldt North Fork of Mad River, at Camp Bauer North Fork of Mad River; Northern Coast Ranges, North Fork of Mad River 60 Comment
  UC302988  Urtica dioica subsp. gracilis Joseph P. Tracy 1926-5-25 7516 Humboldt around Humboldt Bay (Northern Coast Ranges, Elk River Valley); Northern Coast Ranges, Elk River Valley 30 Comment
  UC1225911  Vaccinium membranaceum Joseph P. Tracy 1942-6-23 17243 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC199320  Vaccinium ovatum Carl B. Wolf 1931-8-29 2369 Humboldt Near summit of Orick Hill on road to Weitchpec 304 Comment
  HSC7911  Vaccinium ovatum Francis Winter 1960-4-30 Humboldt Samoa Peninsula, 6 mi. W of Arcata. Comment
  JEPS25685  Vaccinium ovatum P. C. Hutchison 1961-5-22 2006 Humboldt 14.3 mi e Arcata junction with U.S. Highway 101 (on U.S. Highway 299) Comment
  RSA2925  Vaccinium ovatum C. B. Wolf 1931-8-29 1240 Humboldt Near summit of Orick Hill on road to Weitchpec. 305 Comment
  UC1197766  Vaccinium ovatum Joseph P. Tracy 1924-5-4 6672 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC412665  Vaccinium ovatum Harley P. Chandler May 1901 1167 Humboldt Eureka North Coast Ranges 30 Comment
  SEINET3107075  Vaccinium parvifolium Steve Selva, Roger Jensen 1974-8-28 97 Humboldt Redwood forest behind Humboldt State University, Arcata. Comment
  UC203879  Vaccinium parvifolium Joseph P. Tracy 1918-4-21 4879 Humboldt Near Newell's old camp, Kneeland Prairie Road, around Humboldt Bay, Northern Coast Region 457 Comment
  HSC100480  Vaccinium parvifolium Carl C. Marshall May 1886 217 Humboldt Woods, Humboldt Bay. Comment
  JEPS9372  Valeriana californica Joseph P. Tracy 1935-7-30 14381 Humboldt Salmon Summit 2103 Comment
  RSA30602  Valeriana sitchensis subsp. scouleri Lincoln Constance, R. C. Rollins 1942-5-11 2867 Humboldt 3 miles W of East Fork of Willow Creek. Comment
  CAS-BOT-BC76050  Vancouveria hexandra Mrs. H. E. Wilder 1924-4-26 s.n. Humboldt Carlotta. Comment
  HSC68321  Vancouveria hexandra J. P. Smith 1973-5-26 6841 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  JEPS33026  Vancouveria hexandra W. L. Jepson 1902-6 1912 Humboldt Pepperwood; beneath redwoods Comment
  SD58169  Vancouveria hexandra Milo S. Baker 1923-7-16 19 Humboldt 3 miles southeast of Eureka Comment
  BLMAR34  Vancouveria planipetala Jennifer Wheeler 34 Humboldt King range Comment
  HSC32234  Velezia rigida J. O. Sawyer 1970-6-24 2248 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC176191  Veratrum californicum var. californicum Joseph P. Tracy 1912-6-16 3695 Humboldt between Fields Landing and Salmon Creek (at the Still place); Humboldt Bay Region 0 Comment
  UC1225851  Veratrum insolitum Joseph P. Tracy 1948-9-12 18213 Humboldt 1 mi w Box Camp; Trinity Summit 1371 Comment
  HSC34287  Veratrum viride K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC21173  Verbascum thapsus H. D. Sumner 1959-7-13 Humboldt Redwood Creek near Hwy. 299 305 Comment
  HSC100694  Verbena prostrata Carl C. Marshall Jul 1887 327 Humboldt Dry interior valleys. Comment
  UCR45402  Veronica arvensis Barry Silver 1986-4-23 542 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  UC582552  Veronica peregrina subsp. xalapensis Joseph P. Tracy 1935-5-25 13832 Humboldt Fort Seward 106 Comment
  HSC21217  Veronica persica D. K. Smith 1968-1-16 1 Humboldt 0.5 mi. S of Blue Lake on West End Rd. Comment
  HSC37846  Veronica persica Thomas W. Nelson, James Nelson 1976-3-11 2265 Humboldt Beside Eel River just N of terminus of Singley Rd. Comment
  HSC99632  Veronica serpyllifolia subsp. humifusa G. L. Clifton, Terry Griswold 1979-7-25 10866 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC99295  Vicia americana var. americana Jimerson, J. Pageau 1979-8-10 719 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  RSA168916  Vicia americana var. americana H. E. Parks, Joseph P. Tracy, C. R. Parks 1942-6-23 17231 Humboldt Trinity Summit, vicinity of Box Camp. Comment
  UC71810  Vicia americana var. americana Mrs. M. H. Manning May 1903 133 Humboldt Fort Bidwell Comment
  UCR122381  Vicia benghalensis George K. Helmkamp, E. A. Helmkamp 2001-7-8 7003 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC71618  Vicia hirsuta J. P. Smith 1973-5-26 6812 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC15272  Vicia sativa subsp. nigra R. A. Rasp 1964-4-5 32 Humboldt 1 mi. S of Hoopa on Willow Creek Rd. Comment
  HSC95677  Vicia sativa subsp. nigra Steven Lee 2004-4-11 15 Humboldt Scenic Dr., about 1 mi. N of Westhaven Exit off Hwy. 101, 1 from Houda Point. Comment
  HSC15280  Vicia sativa subsp. sativa A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek Jct., 200 yards W of Lindsey Creek Comment
  UC1197471  Vicia sativa subsp. sativa Joseph P. Tracy 1915-6-6 4651 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  JEPS66196  Vicia tetrasperma Joseph P. Tracy 1916-5-31 4688 Humboldt Stitz Creek Northern Coast Ranges Eel River (along Eel River from South Fork to Scotia) 60 Comment
  HSC104036  Vicia villosa subsp. villosa E. R. Fyer 2015-4-26 22 Humboldt At turnout off Samoa Blvd., at railroad bridge 3 Comment
  CDA11191  Viola adunca G. F. Hrusa, N. Kang 1992-3-14 9380 Humboldt StageCoach Hill annex of Prairie Creek Redwoods State Park. Comment
  HSC36881  Viola adunca J. P. Smith, J. O. Sawyer, J. Cole 1976-4-18 8611 Humboldt Bald Hills Rd., 13 mi. from its junction with U.S. 101 Comment
  UC1761516  Viola adunca Milo S. Baker 1923-7-30 158 Humboldt Iaqua, 1/2 mi from Fredricksons house (near head of Yager Creek) 670 Comment
  RSA120706  Viola cuneata S. S. Tillett 1956-7-6 611 Humboldt South slope along Bar Shanty Road, 5 miles from Orleans. 488 Comment
  UC66188  Viola cuneata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5642 Humboldt from Bair's to Hoopa; North Coast Ranges, Hoopa Mountain Comment
  HSC72691  Viola glabella Gail Newton 1980-6-24 548 Humboldt Near Ladder Rock 1500 Comment
  UC668249  Viola glabella Joseph P. Tracy 1938-6-13 15912 Humboldt at Cold Springs Cold Springs; Grouse Mountain, Cold Springs 1432 Comment
  CAS-BOT-BC536492  Viola glabella Henry M. Pollard 1948-7-18 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC536955  Viola lobata Volney Rattan 1879-6-1 s.n. Humboldt Klamath Comment
  HSC101993  Viola macloskeyi M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 892 Humboldt Patterson Meadows 1555 Comment
  JEPS91197  Viola macloskeyi subsp. macloskeyi Dean W. Taylor 1970-5-8 328 Humboldt Sphagnum bog North of Arcata; ; Sphagnum bog North of Arcata 3 Comment
  HSC70321  Viola ocellata M. A. Baker 1980-6-7 1872 Humboldt Near Ammon Creek 732 Comment
  CAS-BOT-BC270151  Viola palustris H. E. Parks; Joseph P. Tracy 1927-4-23 7919 Humboldt Big Lagoon, in bog 3 Comment
  HSC21876  Viola praemorsa subsp. praemorsa Elrid H. Spinas 1948-5-15 6 Humboldt Horse Mtn. Comment
  SEINET10404788  Viola sarmentosa Unknown 1967-6-16 67 -12 Humboldt of Orick; James Irvine redwood grove, U.S. 101 Comment
  HSC21857  Viola sempervirens D. E. Anderson 1962-2-10 1915 Humboldt 1.0 mi. S of Big Lagoon school along abandoned stretch of Hwy. 101 Comment
  HSC44318  Viola sempervirens J. Walker 1977-4-23 11 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC164805  Viola sempervirens Joseph P. Tracy 1904-4-3 2006 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  UC1198426  Viola sempervirens Joseph P. Tracy 1921-2-27 5416 Humboldt Bear Creek Flat near Pepperwood (along Eel River from South Fork to Scotia); Northern Coast Ranges, Eel River, Bear Creek Flat 60 Comment
  UC668241  Viola sheltonii Joseph P. Tracy 1933-7-16 12769 Humboldt near McKay Camp (South Fork Mountain); South Fork Mountain 1676 Comment
  RSA46711  Vitis californica Doris K. Kildale 1926-5-2 1864 Humboldt Willow Creek Flat. Comment
  SEINET10918233  Vitis californica Unknown 1988-7-25 Anonymous s.n Humboldt Hwy Am [P--], Chestnut & Drew Comment
  HSC32482  Vulpia microstachys Bonnie Prange 1974-5-18 Humboldt Off Hwy. 299 at China Slide. Comment
  UC1103716  Vulpia microstachys var. microstachys Joseph P. Tracy 1912-7-31 3917 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  UC525670  Vulpia microstachys var. microstachys Joseph P. Tracy 1926-5-1 7450 Humboldt Redwood Creek Northern Coast Ranges (at Berry's) 274 Comment
  UC1145196  Vulpia microstachys var. pauciflora Joseph P. Tracy 1939-4-29 16247 Humboldt 8 mi below Orleans (near Slate Creek, Klamath River); Klamath River 121 Comment
  HSC70744  Vulpia myuros R. York 1980-5-17 539 Humboldt Near Le Perron Peak 1066 Comment
  SEINET200325 Image available Vulpia myuros var. myuros J. P. Tracy 1900-1 858 Humboldt Eureka. Comment
  CAS-BOT-BC128817  Whipplea modesta Doris K. Kildale 1928-7-24 5267 Humboldt Redwood Creek at Berry's 289 Comment
  HSC101659  Whipplea modesta J. P. Smith, J. O. Sawyer 2011-4-23 13119 Humboldt Along Salmon Creek Rd., 4.6 miles from its junction with U.S. 101. 290 Comment
  HSC24380  Whipplea modesta J. O. Sawyer 1970-6-24 2242 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC31566  Whipplea modesta Glenn McGourty 1974-5-11 36 Humboldt Timber trail off Maple Creek Rd. in Kneeland Comment
  OBI36661  Whipplea modesta David J. Keil 1983-7-2 17322 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mtn Summit Rd Comment
  UCD117288  Whipplea modesta K. Esau 1934-5-8 s.n. Humboldt Redwood Highway, near Scotia. Comment
  HSC13045  Woodwardia fimbriata Steve Dorei 1970-10-13 45 Humboldt H.S.U. campus, Arcata, W of Forestry building, SW corner of parking lot Comment
  UCD136104  Woodwardia fimbriata K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  UC302181  Wyethia angustifolia Joseph P. Tracy 1926-6-6 7577 Humboldt in open forest on road w from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  UC1096426  Wyethia longicaulis W. L. Colwell 1957-8-6 52 Humboldt 11 mi northeast of Bridgeville near Six Rivers National Forest Comment
  HSC100567  Xerophyllum tenax Carl C. Marshall Jun 1885 82 Humboldt Ridge between Redwood and N Fork. Comment
  UC154242  Yabea microcarpa Joseph P. Tracy 1906-5-13 2454 Humboldt Humboldt Bay Northern Coast Region (sand dunes of ocean beach) Comment
  HSC79498  Zeltnera muehlenbergii Kenneth Clark 1979-7-1 454 Humboldt Shelter Cove, Dead Man's Gulch 9 Comment
  HSC15743  Zigadenus fremontii Elrid H. Spinas 1948-6-16 57 Humboldt Horse Mtn. Comment
  HSC39225  Zigadenus micranthus D. E. Anderson, J. P. Smith 1971-7-6 1288 Humboldt Horse Mtn. Comment
  UC1005682  Zigadenus micranthus var. micranthus Frank W. Gould 1939-5-30 840 Humboldt about one-half mi below the ski-hut (about 25 mi due e Eureka, Horse Mountain); Horse Mountain 1100 Comment
  CAS-BOT-BC534318  Zigadenus venenosus var. venenosus Carl B. Wolf 1937-6-14 8817 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  HSC13443  Zizania palustris var. interior Paul Shields 1955-9-23 Humboldt 5 mi. SE of Arcata Comment



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