Search Results — 2000 specimen records retrieved (1485 records with coordinates)
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Results for search: Collector=Howe;   

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

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78095  Abies magnifica John Thomas Howell 1960-7-20 35776 Plumas Between Boiling Springs Lake and Terminal Geyser 1859 Comment
  GH355273  Abies magnifica var. shastensis J. T. Howell 1962-9-24 38843 Unknown North side of Sunday Peak, Greenhorn Mts. 2377 Comment
  CAS-BOT-BC229585  Abronia maritima John Thomas Howell 1932-3-13 8230 Ventura San Nicolas Island Comment
  RSA1554  Abronia maritima J. T. Howell 1928-7-10 1087 Orange Capistrano Beach. 0 Comment
  SD113868  Acalypha californica Darley F. Howe 1938-8-14 721 San Diego Mesa south of lower Tia Juana Valley. Comment
  CAS-BOT-BC330609  Acer glabrum var. glabrum John Thomas Howell 1940-7-29 15687 Fresno Bubbs Creek, Junction Meadow Comment
  CAS-BOT-BC331629  Acer glabrum var. glabrum John Thomas Howell 1958-8-1 34150 Fresno Sierra Nevada. Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC331625  Acer macrophyllum John Thomas Howell 1969-9-12 46088 El Dorado Sierra Nevada. Near Bridal Veil Falls, 3 miles W of Riverton Comment
  RSA456  Acer macrophyllum J. T. Howell 1927-7-26 478 Orange Claymine Ca - on near Sierra Peak. 244 Comment
  CAS-BOT-BC28672  Achillea millefolium John Thomas Howell 1947-5-14 23163 Marin McClure Beach Comment
  CAS-BOT-BC211912  Achnatherum coronatum John Thomas Howell; Alice Eastwood 1937-4-24 3926 Orange 2 miles east of San Juan Hot Springs Comment
  CAS-BOT-BC260433  Achnatherum hymenoides John Thomas Howell 1962-6-19 37839 Plumas The Buttes, N Sierra Valley 1493 Comment
  CAS-BOT-BC210770  Achnatherum nelsonii John Thomas Howell 1941-8-1 16639 Madera Near Garnet Lake 2956 Comment
  CAS-BOT-BC216870  Achnatherum occidentale John Thomas Howell 1943-7-18 18525 Nevada Castle Peak Comment
  CAS-BOT-BC216879  Achnatherum occidentale John Thomas Howell 1955-7-19 30770 Plumas Beckwourth 1493 Comment
  CAS-BOT-BC216972  Achnatherum occidentale John Thomas Howell; Gordon H. True 1967-7-5 43170 Tulare 2.8 miles N of South Fork Kern River bridge, on road to Troy Meadow, Kern Plateau 2194 Comment
  UCD55560  Achnatherum occidentale John Thomas Howell 1942-7-31 17469 Tulare Mt. Kaweah. Comment
  CAS-BOT-BC218603  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True 1971-7-13 48365 Kern Southwest of Pine Flat on rim of Kern Plateau, Sierra Nevada Comment
  CAS-BOT-BC218612  Achnatherum occidentale subsp. pubescens John Thomas Howell 1955-7-19 30821 Lassen East side of Beckwourth Pass, Sierra Nevada 1493 Comment
  CAS-BOT-BC218634  Achnatherum occidentale subsp. pubescens John Thomas Howell 1944-8-9 20179 Tuolumne Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC218059  Achnatherum pinetorum John Thomas Howell 1949-8-5 26030 Tulare Army pass 3505 Comment
  RSA299175  Achnatherum speciosum J. T. Howell 1958-5-23 33230 Inyo Alabama Hills, alt 4800ft. Inyo County 1463 Comment
  CAS-BOT-BC391388  Aconitum columbianum subsp. columbianum John Thomas Howell 1946-9-1 22957 El Dorado Echo Summit 2255 Comment
  CAS-BOT-BC412883  Aconogonon davisiae John Thomas Howell 1943-7-15 18369 Nevada Boreal Ridge. West side of Donner Pass near Norden 2133 Comment
  CAS-BOT-BC391622  Actaea rubra John Thomas Howell 1925-9-12 1429 Alameda Strawberry Canon [Canyon], Berkeley Hills Comment
  SD53383  Adenocaulon bicolor Darley F. Howe 1962-8-2 3383 Del Norte 24.1 miles northeast of entrance to 6 Rivers National Forest on #199 Comment
  CAS-BOT-BC139938  Adenostoma fasciculatum John Thomas Howell 1931-4-10 6228 Santa Barbara Ravenswood, Santa Cruz Island Comment
  RSA356  Adenostoma sparsifolium J. T. Howell 1927-8-7 617 San Diego Between Campo and Buckman Springs. 915 Comment
  CAS-BOT-BC110715  Aegilops cylindrica John Thomas Howell 1974-7-8 50505 Lassen Sierra Nevada. Susanville. 1295 Comment
  SD113955  Aesculus californica Darley F. Howe 1947-6-1 1580 Kern Greenhorn Mountains 609 Comment
  CAS-BOT-BC29478  Ageratina occidentalis J. T. Howell 1969-8-25 45897 Tulare Near Mineral King on Farewell Gap trail near Crystal Creek 2438 Comment
  RSA26483  Ageratina occidentalis John T. Howell 1940-7-29 s.n. Fresno Between Charlotte Creek and Junction Meadow, Bubbs Creek Comment
  SD61054  Ageratina occidentalis Darley F. Howe 1964-8-6 3942 Siskiyou 3.5 miles south of Happy Camp on #96, Klamouth National Forest. 149 Comment
  CAS-BOT-BC295618  Agnorhiza invenusta John Thomas Howell 1942-7-24 17050 Tulare East Fork of Kaweah River at Cold Spring Comment
  CAS-BOT-BC29512  Agoseris John Thomas Howell 1955-7-20 30854 Plumas Mohawk 1371 Comment
  CAS-BOT-BC29523  Agoseris apargioides J. T. Howell 1946-5-4 21753 Marin Dillons Beach Comment
  SD88539  Agoseris apargioides Darley F. Howe 1972-6-25 San Mateo 7.5 miles north of Half Moon Bay. Comment
  CAS-BOT-BC15307  Agoseris heterophylla John Thomas Howell 1924-6-10 399 Mariposa Wawona, near the Merced River 1219 Comment
  CAS-BOT-BC15340  Agoseris heterophylla John Thomas Howell 1944-7-13 19724 Glenn Plaskett Meadows Comment
  POM203304  Agoseris heterophylla John T. Howell 1931-4-3 6111 Napa Pope Creek, 7 miles from Monticello, Napa Range Comment
  CAS-BOT-BC22837  Agoseris heterophylla var. cryptopleura John Thomas Howell 1954-5-17 29692 El Dorado 1.5 miles south of Garden Valley Comment
  RSA97655  Agoseris heterophylla var. heterophylla J. T. Howell 1953-6-15 29093 Monterey Hastings Reservation, Santa Lucia Mountains Comment
  CAS-BOT-BC13275  Agoseris monticola J. T. Howell 1950-7-14 26880 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC13238  Agoseris monticola John Thomas Howell 1943-7-20 18629 Nevada Near Castle Peak Comment
  POM203849  Agoseris parviflora J. T. Howell 1934-6-14 12115 Modoc Near Lost Lake, Warner Mts. 2439 Comment
  CAS-BOT-BC13401  Agoseris retrorsa J. T. Howell; Gordon H. True 1971-6-16 47984 a Kern Claraville 1920 Comment
  CAS-BOT-BC127595  Agropyron cristatum John Thomas Howell 1955-7-19 30749 Plumas Sierra Nevada. Beckwourth. 1493 Comment
  RSA299167  Agropyron desertorum J. T. Howell 1974-7-8 50468 Lassen Susanville 1296 Comment
  UC1177042  Agrostis alba John Thomas Howell 1943-6-20 18241 Napa hills sw St. Helena Comment
  UC1106211  Agrostis capillaris John Thomas Howell 1945-6-12 20955 Marin near radio station; Point Reyes Peninsula Comment
  CAS-BOT-BC127426  Agrostis densiflora John Thomas Howell 1947-9-6 24180 Marin Dillons Beach. Comment
  CAS-BOT-BC127436  Agrostis densiflora John Thomas Howell 1941-6-15 s.n. Marin Point Reyes Lighthouse. Comment
  SEINET10908994  Agrostis diegoensis John Thomas Howell 1943-6-10 Howell 18236 Unknown Hills south-west of St. Helena, Napa Co. Comment
  CAS-BOT-BC126928  Agrostis exarata John Thomas Howell 1969-8-28 46054 Tulare Sierra Nevada. Mineral King. 2377 Comment
  CAS-BOT-BC127081  Agrostis exarata John Thomas Howell; Gordon H. True 1973-7-31 50087 Plumas Sierra Nevada. Summit ridge of Thompson Peak. Diamond Range. 2194 Comment
  CAS-BOT-BC127256  Agrostis exarata John Thomas Howell 1970-9-22 47242 Kern Sierra Nevada. Along Kern River between Kernville and River Kern. 822 Comment
  CAS-BOT-BC139582  Agrostis gigantea John Thomas Howell 1960-8-22 36337 Shasta Lassen Volcanic National Park. Manzanita Lake. 1783 Comment
  CAS-BOT-BC139604  Agrostis gigantea John Thomas Howell 1976-7-15 51837 Plumas Sierra Nevada. Snake Lake, about 4 miles northwest of Quincy. 1219 Comment
  CAS-BOT-BC139675  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49484 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC139717  Agrostis gigantea John Thomas Howell 1961-9-22 36709 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CAS-BOT-BC139738  Agrostis gigantea John Thomas Howell 1947-7-18 23425 Los Angeles San Gabriel Mountains. Big Pines. 2103 Comment
  SEINET10509947  Agrostis gigantea John Thomas Howell 1944-7-30 Howell s.n. Marin Near Locust Ave., Mill Valley. Comment
  CAS-BOT-BC139516  Agrostis hallii John Thomas Howell 1964-6-30 40866 San Luis Obispo Cambria. Comment
  CAS-BOT-BC139170  Agrostis idahoensis John Thomas Howell 1942-7-26 17220 Tulare Mineral King. Comment
  CAS-BOT-BC139179  Agrostis idahoensis John Thomas Howell 1969-8-26 45964 Tulare Sierra Nevada. Mineral King. 2377 Comment
  CAS-BOT-BC139275  Agrostis idahoensis John Thomas Howell; Gordon H. True 1968-7-18 4436 Mono Sierra Nevada. Basin at north end of Saddlebag Lake, head of Lee Vining Creek. 3048 Comment
  CAS-BOT-BC139310  Agrostis idahoensis John Thomas Howell 1946-7-14 22310 Inyo Rock Creek Lake Basin. Mosquito Flat. 3139 Comment
  CAS-BOT-BC138833  Agrostis microphylla John Thomas Howell 1943-5-15 18091 Marin Tiburon Peninsula. Comment
  GH341255  Agrostis microphylla J. T. Howell 1946-5-12 21777 Unknown South end of Carson Ridge, Marin County Comment
  CAS-BOT-BC139015  Agrostis pallens John Thomas Howell 1943-6-19 18236 Napa Hills southwest of Saint Helena. Comment
  CAS-BOT-BC139048  Agrostis pallens John Thomas Howell; Catherine Best 1981-6-11 54064 Marin Point Reyes Peninsula. North Beach. Comment
  SD53147  Agrostis pallens Darley F. Howe 1962-8-16 3444 Fresno Shaver Lake, Sierra National Forest, under pines. 1676 Comment
  CAS-BOT-BC138759  Agrostis scabra John Thomas Howell 1958-7-22 33771 A Fresno Sierra Nevada. Simpson Meadow, Middle Fork of the Kings River. 1828 Comment
  UC710528  Agrostis scabra John Thomas Howell 1943-7-19 18572 Placer Summit Valley Comment
  CAS-BOT-BC138663  Agrostis stolonifera J. T. Howell 1965-6-23 41368 Alameda San Leandro. Juana Street. Comment
  GH341329  Agrostis stolonifera J. T. Howell 1947-9-6 24181 Unknown Dillons Beach, Marin Co. Comment
  CAS-BOT-BC138534  Agrostis variabilis John Thomas Howell 1947-8-7 23870 Inyo Big Pines Lakes. West of Sixth Lake. 3413 Comment
  RSA44148  Agrostis variabilis J. T. Howell 1947-8-10 23966 Inyo Near Sam Mack Lake, Big Pine Lakes. 3659 Comment
  SD128700  Aliciella latifolia Darley F. Howe 1980-5-27 Inyo 3 miles north of the Inyo/San Bernardino County line, on Highway 127 519 Comment
  CAS-BOT-BC445388  Alisma plantago-aquatica John Thomas Howell 1945-5-9 20836 Marin Between Hamilton Field and Ignacio Comment
  SEINET12043964  Allium falcifolium J. T. Howell 1937-1 13622 Unknown Scott Mt. between Trinity and Siskiyou counties Comment
  CAS-BOT-BC135894  Allium haematochiton John Thomas Howell 1928-3-2 3359 Los Angeles Vermont Canyon [Canon], Griffith Park Comment
  CAS-BOT-BC472703  Allium lacunosum var. lacunosum John Thomas Howell 1957-5-19 32334 Stanislaus Mt. Oso 1005 Comment
  CAS-BOT-BC470919  Allium lemmonii John Thomas Howell 1963-7-10 39728 Alpine Sierra Nevada, Sagebrush flat, 0.5 miles west of Monitor Pass 2529 Comment
  CAS-BOT-BC472815  Allium obtusum John Thomas Howell; Gordon H. True 1970-6-24 46686 Tulare Summit of North Manter Pass, Big Meadow to Manter Meadow, Kern Plateau, Sierra Nevada 2499 Comment
  CAS-BOT-BC472044  Allium obtusum var. obtusum John Thomas Howell 1958-8-12 34321 Madera Near Lake Isberg 2987 Comment
  UCD138606  Allium tribracteatum John Thomas Howell 1953-5-23 29006 Tuolumne between Long Barn and Pinecrest. 1706 Comment
  CAS-BOT-BC476786  Allium validum John Thomas Howell 1946-7-14 22250 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC478003  Allium validum John Thomas Howell 1949-8-7 26122 Tulare Rock Creek 3169 Comment
  CAS-BOT-BC171354  Alnus incana subsp. tenuifolia John Thomas Howell 1959-9-24 34936 Plumas Butterfly Creek near mouth. Sierra Nevada 914 Comment
  CAS-BOT-BC169666  Alnus rhombifolia John Thomas Howell 1936-8-27 12842 Trinity near Trinity Center Comment
  CAS-BOT-BC170688  Alnus rhombifolia John Thomas Howell 1927-7-21 2810 Orange Santa Ana River bottom, Santa Ana Canon [canyon] 152 Comment
  CAS-BOT-BC169367  Alnus rubra John Thomas Howell 1934-3-3 11736 Sonoma 8 miles S of Fort Ross Comment
  SD51348  Alnus rubra Darley F. Howe 1961-7-28 3073 Marin 0.3 miles above Stinson Beach on road to Mount Tamalpais 149 Comment
  CAS-BOT-BC137948  Alopecurus saccatus John Thomas Howell; Catherine Best; Wilma Follette; Gordon H. True 1981-5-21 54041 Solano Jepson Prairie Preserve of The Nature Conservancy, in the vicinity of Olcutt Lake about 12 miles south of Dixon. 6 Comment
  UC1176784  Amaranthus albus John Thomas Howell 1939-10-15 15374 Marin Alpine Lake Comment
  RSA201739  Amaranthus arenicola J. T. Howell 1963-8-7 40066 Monterey Bank of San Lorenzo Creek just south of King City Comment
  SD77859  Amaranthus blitoides Darley F. Howe 1970-8-26 Mono 10.6 miles west of Sonora Junction on Sonora Pass Road 2500 Comment
  UCD97197  Amaranthus blitoides John Thomas Howell 1965-9-15 41387 Mono West shore of Mono Lake on roadside. 2042 Comment
  UC710617  Amaranthus deflexus John Thomas Howell 1944-7-23 19852 Marin San Rafael 15 Comment
  UC1176783  Amaranthus powellii John Thomas Howell 1943-9-5 Marin Mill Valley Comment
  CAS-BOT-BC13556  Ambrosia acanthicarpa John Thomas Howell 1962-7-12 38655 Kern 3 miles south of Kernville 822 Comment
  CAS-BOT-BC13608  Ambrosia acanthicarpa John Thomas Howell 1927-10-22 3164 Orange In Santa Ana River bottom, Santa Ana Canyon 152 Comment
  SD88352  Ambrosia chamissonis Darley F. Howe 1972-6-22 Santa Barbara Ocean Park, west of Lompoc Comment
  SD103509  Ambrosia dumosa Darley Howe 1978-5-29 San Bernardino Barstow 640 Comment
  RSA769  Ambrosia psilostachya J. T. Howell 1927-10-29 773 Orange Bryant Ranch near Long Beach. 15 Comment
  CAS-BOT-BC55622  Ambrosia psilostachya John Thomas Howell 1956-9-30 31896 San Francisco Embarcadero and Townsend St. Comment
  CAS-BOT-BC272962  Ambrosia salsola John Thomas Howell; Catherine Best 1983-4-19 54721 Kern Kern River Preserve of The Nature Conservancy, South Fork Valley near Weldon Comment
  CAS-BOT-BC142536  Amelanchier utahensis John Thomas Howell 1945-6-20 21083 Lake Sawmill Flat, Bartlett Mountain 1219 Comment
  CAS-BOT-BC142945  Amelanchier utahensis John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-28 53129 Alpine Subalpine slope west of Ebbetts Peak - Sierra Nevada 2712 Comment
  CAS-BOT-BC28272  Amphiscirpus nevadensis John Thomas Howell 1934-7-8 12506 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC214019  Amsinckia John Thomas Howell 1930-5-8 4751 San Benito San Juan Grade Comment
  CAS-BOT-BC222219  Amsinckia John Thomas Howell 1934-4-8 11826 Contra Costa South of Antioch Comment
  GH424644  Amsinckia J. T. Howell 1934-6-13 12085 Unknown Surprise Valley, near Fort Bidwell Comment
  GH424764  Amsinckia J. T. Howell 1933-5-3 11207 Unknown San Francisco, Visitacion Valley Comment
  GH424782  Amsinckia J. T. Howell 1933-4-15 11225 Unknown St. Mary's College Comment
  SD71393  Amsinckia lycopsoides John Thomas Howell 1933-5-14 11225 Contra Costa St. Mary's College Comment
  CAS-BOT-BC54166  Amsinckia tessellata var. tessellata John Thomas Howell 1934-6-16 12212 Modoc Parker Creek. 1584 Comment
  RSA560  Amsonia tomentosa var. tomentosa J. T. Howell 1927-7-9 336 San Bernardino Cactus Flats, San Bernardino Mts. 1829 Comment
  UC485555  Ancistrocarphus filagineus Thomas Howell 1892-5-11 Kern Caliente Comment
  RSA126399  Andropogon glomeratus J. T. Howell 1939-10-15 s.n. Marin Near Liberty Camp. Comment
  CAS-BOT-BC128579  Androsace septentrionalis John Thomas Howell 1946-7-27 22793 Fresno Unglaciated ridge northwest of Mono Pass 3657 Comment
  CAS-BOT-BC400307  Anemopsis californica John Thomas Howell 1962-7-9 38342 Kern Isabella 762 Comment
  SD50758  Angelica arguta var. breweri Darley F. Howe 1959-8-3 2784 Plumas Thirty miles north of Quincy on Hwy 89. 1370 Comment
  CAS-BOT-BC271412  Anisocarpus scabridus John Thomas Howell 1943-8-8 19174 Mendocino Anthony Peak Comment
  CAS-BOT-BC64014  Anisocoma acaulis John Thomas Howell; Gordon H. True 1971-6-16 47908 Kern 6 miles east of Claraville on road to Kelso Valley 1524 Comment
  CAS-BOT-BC64774  Anisocoma acaulis John Thomas Howell; Gordon H. True 1968-5-13 44296 Tulare Cherry Hill Road, Poison Meadow Creek Canyon, Kern Plateau 1981 Comment
  CAS-BOT-BC59244  Antennaria corymbosa John Thomas Howell 1940-7-30 15714 Tulare East Lake 2926 Comment
  CAS-BOT-BC79886  Antennaria microphylla John Thomas Howell 1942-8-3 17620 Tulare Between Little Five Lakes and Kaweah Gap Comment
  CAS-BOT-BC79966  Antennaria microphylla John Thomas Howell 1978-7-26 53202 Nevada Boca Flats on Little Truckee River, 5 miles north of Hirschdale on road to Stampede Reservoir 1767 Comment
  RSA88084  Antennaria rosea J. T. Howell 1951-6-28 27718 Plumas Eureka Peak. 2195 Comment
  CAS-BOT-BC84705  Anthemis arvensis J. T. Howell; T. C. Fuller; G. D. Barbe 1980-5-20 2723 Trinity South of Trinity River bridge, west side of Hwy 3, 0.4 mile north of Coffee Creek Road 755 Comment
  CAS-BOT-BC84719  Anthemis cotula John Thomas Howell 1943-8-12 19286 Glenn Snow Basin Creek Comment
  RSA223677  Anthriscus caucalis J. T. Howell 1957-6-17 32689 San Francisco Presidio, along south wall Comment
  SDSU2302  Anthriscus caucalis D. F. Howe 1968-5-23 4524 Mendocino 3.7 miles west of Mendocino-Lake Co. line on road from Crear Lake to Hopland. Comment
  SD53103  Antirrhinum multiflorum Darley F. Howe 1962-7-21 3332 Santa Barbara 10.6 miles south of Orcutt on #1 305 Comment
  CAS-BOT-BC454512  Aphanes occidentalis John Thomas Howell 1978-4-5 52751 Calaveras Sierra Nevada, Camp Nine Road northeast of Vallecito. 609 Comment
  CAS-BOT-BC435123  Aptenia cordifolia John Thomas Howell 1957-9-1 32937 San Francisco San Francisco. Sutro Heights above Point Lobos. Comment
  CAS-BOT-BC392105  Aquilegia formosa John Thomas Howell 1951-8-19 28156 Butte 2 miles west of Pulga 365 Comment
  CAS-BOT-BC392174  Aquilegia formosa John Thomas Howell 1946-7-14 22274 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC409158  Aquilegia pubescens John Thomas Howell 1969-8-27 45998 Tulare Near Mineral King in Glaciel Valley below White Chief Mine; Sierra Nevada 2895 Comment
  RSA88493  Arabis holboellii var. retrofracta J. T. Howell 1951-7-21 28053 Tulare White Chief Trail; Mineral King and vicinity 2591 Comment
  POM304510  Arabis inyoensis J. T. Howell 1941-7-31 16610 Madera Ridge NW of San Joaquin Mt. Comment
  UC750492  Arctostaphylos X candidissima John Thomas Howell 1945-6-21 21133 Lake Sawmill Flat Bartlett Mountain 1219 Comment
  CAS-BOT-BC24090  Arctostaphylos bakeri John Thomas Howell 1933-4-2 10957 Sonoma 2 miles east of Occidental Comment
  A350171  Arctostaphylos canescens var. sonomensis J. T. Howell 1937-4-11 12894 Unknown Rincon Ridge, northeast of Santa Rosa Comment
  A350155  Arctostaphylos columbiana J. T. Howell 1934-3-3 11744 Unknown Between Fort Ross and Stewart's Point Comment
Read comments
May 19 2019
  SD64426  Arctostaphylos columbiana Darley F. Howe 1966-6-8 Del Norte Hills near Harscrabble Creek, Smith River. 120 Comment
  CAS-BOT-BC25141  Arctostaphylos crustacea subsp. crinita John Thomas Howell 1933-4-9 10985 Santa Cruz Ano Nuevo Pines, N. Santa Cruz Co. Comment
  CAS-BOT-BC25022  Arctostaphylos densiflora John Thomas Howell 1929-8-12 3488 a Sonoma Road NE of Occidental. Comment
  CAS-BOT-BC25023  Arctostaphylos densiflora John Thomas Howell 1931-3-14 5778 Sonoma Vine Hill District, 10 miles W of Santa Rosa. Comment
  SDSU1456  Arctostaphylos glandulosa D. F. Howe 1939-5-12 818 San Diego Laguna Mts. Comment
  SD51329  Arctostaphylos glandulosa D. F. Howe 1961-7-30 Mendocino 15.3 miles from Upper Lake ranger station on road into Mendocino 1036 Comment
  CAS-BOT-BC23352  Arctostaphylos glandulosa subsp. cushingiana John Thomas Howell 1944-3-26 19343 Marin Inverness Ridge Comment
  CAS-BOT-BC23353  Arctostaphylos glandulosa subsp. cushingiana John Thomas Howell 1947-3-2 23038 Marin Above Blythedale Canyon, east side of Mt. Tamalpais. Comment
  CAS-BOT-BC23218  Arctostaphylos glandulosa subsp. glandulosa John Thomas Howell 1925-2-1 732 Marin South side of Mt. Tamalpais 457 Comment
  UC518009  Arctostaphylos glandulosa subsp. glandulosa John Thomas Howell 1933-3-19 10868 Marin above Mill Valley (s side of mt.); Mt. Tamalpais Comment
  SD88568  Arctostaphylos hookeri Darley F. Howe 1972-2-17 4801 Monterey Huckleberry Hill. Comment
  CAS-BOT-BC27192  Arctostaphylos howellii John Thomas Howell 1930-10-25 5686 Monterey Canyon of the Arroyo Seco River, Santa Lucia Mts. Comment
  CAS-BOT-BC27253  Arctostaphylos jepsonii John Thomas Howell 1923-5-25 17 Mariposa Near Stella Lake, Wawona 1219 Comment
  SD71325  Arctostaphylos manzanita John Thomas Howell 1960-7-24 35999 Tehama In Transition Zone forest, 8.0 miles west of Mineral. 1220 Comment
  CAS-BOT-BC24410  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51568 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC24420  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1931-2-22 5736 Calaveras Near Mokelumne Hill. Comment
  CAS-BOT-BC38655  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1937-4-11 12906 Sonoma M.S. Baker's place, sw. slope of Mt. Hood Comment
  CAS-BOT-BC38668  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1960-7-24 35998 Tehama 8 miles west of Mineral 1219 Comment
  CAS-BOT-BC24253  Arctostaphylos mewukka John Thomas Howell 1978-4-18 52851 Butte De Sabla. 853 Comment
  CAS-BOT-BC38530  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 mi. from Paradise on road to Pentz. 426 Comment
  CAS-BOT-BC39964  Arctostaphylos nevadensis John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-5-20 53534 Trinity Scott Mt. summit on road from Carrville to Callahan 1645 Comment
  CAS-BOT-BC45563  Arctostaphylos nevadensis John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-27 53099 Alpine E. side of Ebbetts Pass on road to Markleeville. 2377 Comment
  SEINET11977804  Arctostaphylos nevadensis T. J. Howell 1880-1 s.n. Unknown Mount Hood Comment
  CAS-BOT-BC46643  Arctostaphylos patula John Thomas Howell 1931-10-11 8143 Mariposa Wawona Valley. Comment
  SDSU2828  Arctostaphylos patula D. F. Howe 1941-8-7 1268 Inyo Lone Pine Creek, Sierra Nevadas. 2591 Comment
Read comments
Jan 24 2013
  CAS-BOT-BC44855  Arctostaphylos pumila John Thomas Howell 1965-6-15 41359 Monterey Low hills near the Monterey Airport on Salinas road about 4 miles east of Monterey Comment
  CAS-BOT-BC44868  Arctostaphylos pumila John Thomas Howell 1961-4-12 36482 Monterey Seaside, Santa Lucia Mountains Comment
  GH362125  Arctostaphylos pungens J. T. Howell 1930-3-29 4604 Unknown the Pinnacles Comment
  CAS-BOT-BC43910  Arctostaphylos tomentosa subsp. bracteosa John Thomas Howell 1954-3-18 29136 Monterey 10 miles east of Carmel Valley Post Office, Santa Lucia Mts. Comment
  POM203096  Arctostaphylos tomentosa subsp. tomentosiformis J. T. Howell 1933-4-9 10987 Santa Cruz Ano Nuevo Pines Comment
  SD53175  Arctostaphylos viscida Darley F. Howe 1962-5-13 3217 Tulare Tule Rivere, 5.1 miles east of entrance to Sequoia National Forest on Highway 190. 490 Comment
  UCD52201  Arctostaphylos viscida John Thomas Howell; Gordon H. True 1967-5-9 42236 Butte Serpentine canyonside on northwest side of Feather River Canyon near Pulga Bridge, Butte County. Comment
  CAS-BOT-BC46868  Arctostaphylos viscida subsp. mariposa John Thomas Howell 1931-2-22 5738 Calaveras Near Mokelumne Hill Comment
  CAS-BOT-BC47386  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51095 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48269  Arctostaphylos viscida subsp. viscida John Thomas Howell; Gordon H. True 1971-6-15 47753 Kern Flying Dutchman Creek canyon on Havilah-Mt. Breckentidge Road 1188 Comment
  SBBG92173  Aristida californica D. F. Howe 1980-4-13 Imperial Hwy 8, 6 mi E of Holtville Comment
  UCD56565  Aristida ternipes var. gentilis John Thomas Howell; R. C. Barneby 1954-5-9 29305 Fresno Sierra Nevada, Piedra. 170 Comment
  CAS-BOT-BC90037  Arnica mollis John Thomas Howell; Gordon H. True 1966-7-11 41726 Tulare Horse Meadow, Kern Plateau 2255 Comment
  POM303707  Arnica mollis J. T. Howell 1944-8-10 20239 Mono Glacier Canyon. Mt Dana. Comment
  SD113197  Artemisia douglasiana Darley F. Howe 1935-7-4 279 San Diego Lower Tia Juana Valley Comment
  CAS-BOT-BC90566  Artemisia dracunculus John Thomas Howell 1927-9-24 3118 Orange on sandy island in Santa Ana River bottom, Santa Ana [Canon] Canyon 152 Comment
  CAS-BOT-BC93791  Artemisia dracunculus John Thomas Howell; Gordon H. True 1967-9-19 43860 Tulare Sierra Nevada - Kern Plateau, Kern River South Fork, Kennedy Meadows Campground 1859 Comment
  JEPS36953  Artemisia dracunculus John Thomas Howell 1927-11-27 3265 San Diego twelve mi. s of springs Warners Hot Springs Comment
  CAS-BOT-BC90757  Artemisia ludoviciana subsp. incompta John Thomas Howell; Gordon H. True 1967-9-19 43831 Tulare Flood-plain of Kern River South Fork, Kennedy Meadows Campground, Kern Plateau 1859 Comment
  CAS-BOT-BC90629  Artemisia ludoviciana subsp. incompta John Thomas Howell 1977-8-3 52554 Alpine slope just north of Ebbetts Pass 2682 Comment
  CAS-BOT-BC90895  Artemisia pycnocephala John Thomas Howell 1929-10-11 4456 Monterey Ocean bluffs, Pt. Lobos Comment
  SDSU6205  Artemisia suksdorfii D. F. Howe 1963-7-8 3620 Humboldt 2.5 miles west of Bridgeville on #36. 152 Comment
  CAS-BOT-BC146254  Arundo donax John Thomas Howell; Gordon H. True 1978-4-4 52726 Solano Bordering Denverton Slough. Comment
  SD112853  Arundo donax Darley F. Howe 1951-9-30 2158 San Diego Mission Valley Comment
  SD113032  Asclepias vestita Darley F. Howe 1947-5-5 1547 Los Angeles Highway between Vincent and Littlerock; Mojave Desert. Comment
  CAS-BOT-BC177477  Astragalus asymmetricus John Thomas Howell 1926-6-20 2050 Merced Merced-Los Banos road near the San Joaquin River bridge Comment
  UC710567  Astragalus austiniae John Thomas Howell 1943-7-18 18540 Nevada Castle Peak Comment
  CAS-BOT-BC180475  Astragalus breweri John Thomas Howell 1976-4-29 51621 Lake 2.5 miles south of Lakeport 426 Comment
  SEINET4406614  Astragalus claranus J. T. Howell 1931-1 Unknown Comment
  CAS-BOT-BC178456  Astragalus douglasii var. parishii John Thomas Howell 1927-8-2 2912 Riverside Idyllwild, Strawberry Valley, Mt. San Jacinto 1676 Comment
  CAS-BOT-BC186860  Astragalus gibbsii John Thomas Howell 1974-7-8 50462 Lassen Susanville 1295 Comment
  SD61010  Astragalus gibbsii Darley F. Howe 1964-8-1 3910 Modoc 11 miles south of Alturas on Hwy 395 1280 Comment
  CAS-BOT-BC178184  Astragalus lentiginosus var. fremontii John Thomas Howell 1958-5-25 33357 Inyo Carroll Creek - Sierra Nevada 1676 Comment
  CAS-BOT-BC187169  Astragalus lentiginosus var. fremontii John Thomas Howell; Gordon H. True 1971-6-16 47902 Kern Along Kelso Creek, 15 miles south of Weldon on road to Kelso Valley 1219 Comment
  CAS-BOT-BC187258  Astragalus lentiginosus var. ineptus John Thomas Howell 1944-8-16 20652 Mono Mono Pass Comment
  CAS-BOT-BC187269  Astragalus lentiginosus var. ineptus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-11 54479 Mono 4 miles northeast of Highway 395 on Benton Crossing Road, Long Valley 2148 Comment
  SD46379  Astragalus lentiginosus var. nigricalycis Darley F. Howe 1956-4-14 2523 Kern Temblor Range, Carneros Rocks. Comment
  CAS-BOT-BC186549  Astragalus nuttallii var. nuttallii John Thomas Howell 1929-10-13 4487 San Luis Obispo 2 1/2 miles n. of Cambria Comment
  UC1177220  Astragalus pycnostachyus var. pycnostachyus John Thomas Howell 1939-6-4 Marin on road to Pt. Reyes head of Drake's Bay on road to Pt. Reyes, head of Drake's Bay Comment
  RSA380  Astragalus trichopodus var. lonchus J. T. Howell 1928-2-7 815 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  SD104853  Astragalus trichopodus var. phoxus Darley Howe 1979-6-18 5091 Ventura Canyon 15.7 mi S of Santa Barbara Comment
  RSA143770  Astragalus whitneyi var. lenophyllus J. T. Howell 1943-7-20 s.n. Nevada Castle Peak Comment
  CAS-BOT-BC17400  Athysanus pusillus John Thomas Howell; Gordon H. True; Roberta Shockey 1978-4-5 52754 Calaveras Sierra Nevada. Camp Nine Road northeast of Vallecito. 609 Comment
  CAS-BOT-BC16338  Athysanus unilateralis John Thomas Howell 1931-3-18 5835 Fresno Jacalitos Canyon. Comment
  CAS-BOT-BC170600  Atriplex John Thomas Howell; Gordon H. True 1968-5-15 44464 Tulare Vernal pool nutural area in Valley Grassland, about 4 1/2 miles east-northeast of Pixley, NE corner. 83 Comment
  RSA253  Atriplex confertifolia J. T. Howell 1927-7-9 295 San Bernardino Between Deadman s Point and Box S Ranch, Mojave Desert. 915 Comment
  SDSU5532  Atriplex confertifolia D. F. Howe 1959-4-14 2695 Inyo 12 1/2 mi. north of Shoshone on #127. Comment
  GH295481  Atriplex cordulata J. T. Howell 1933-9-17 11687 Unknown Montezuma Hills Comment
  SEINET4446866 Image available Atriplex coronata J. T. Howell 1930-1 5503 Unknown Comment
  UCD97409  Atriplex fruticulosa John Thomas Howell; Catherine Best, Wilma Follette, Gordon True 1981-5-21 54044 Solano Jepson Prairie Preserve of The Nature Conservancy, in the vicinity of Olcutt Lake, about 12 miles south of Dixon. 6 Comment
  RSA43340  Atriplex fruticulosa J. T. Howell 1948-4-26 24286 Tulare Near Earlimart. Comment
  GH376396  Atriplex hymenelytra J. T. Howell 1928-1-28 3289 Unknown Thousand Palms, Colorado Desert Comment
  CAS-BOT-BC180907  Atriplex pacifica John Thomas Howell 1927-7-17 2788 Orange One mile north of Laguna Beach 30 Comment
  CAS-BOT-BC168463  Atriplex parishii var. subtilis John Thomas Howell 1967-11-4 44075 Tulare SE. corner. About 4.5 miles east-northeast of Pixley 83 Comment
  SDSU5569  Atriplex parryi D. F. Howe 1959-4-14 2692 Inyo 6 1/2 mi. south of Shoshone on road to Tecopa Hot Springs. Comment
  SD50648  Atriplex phyllostegia Darley F. Howe 1958-7-27 2639 Inyo 6.0 miles north of Lone Pine. Comment
  CAS-BOT-BC176584  Atriplex polycarpa John Thomas Howell 1967-11-4 44083 Tulare About 4.5 miles east-northeast of Pixley 83 Comment
  SD128651  Atriplex polycarpa Darley F. Howe 1980-9-21 San Bernardino 13 miles west of Baker on Highway 15 519 Comment
  LA204693  Atriplex pusilla John Thomas Howell; 1938-8-8 14381 Mono Long Valley Comment
  CAS-BOT-BC176646  Atriplex serenana var. serenana John Thomas Howell 1957-6-23 32701 Kern Edison Comment
  POM251773  Atriplex truncata J. T. Howell 1938-8-8 14391 Mono Long Valley Comment
  CAS-BOT-BC146025  Avena barbata John Thomas Howell 1962-6-15 37531 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC145752  Avena sativa John Thomas Howell 1967-4-30 42106 Tulare Vernal pool natural area. About 4.5 miles east-northeast of Pixley. Outside fence at northwest corner. 83 Comment
  SD112803  Baccharis brachyphylla Darley F. Howe 1950-10-1 2037 San Diego Sentenac Canyon Comment
  CAS-BOT-BC99468  Baccharis pilularis John Thomas Howell 1957-6-11 32589 San Francisco North slope of Lone Mountain, San Francisco Comment
  CAS-BOT-BC99481  Baccharis pilularis John Thomas Howell 1956-9-30 31904 San Francisco east end of 22nd St. Comment
  CAS-BOT-BC99455  Baccharis pilularis John Thomas Howell 1967-6-29 42742 San Francisco on site of former home of Mrs. Van Horn Lansdale, Broadway & Webster St., San Francisco Comment
  CAS-BOT-BC106708  Baccharis salicifolia John Thomas Howell 1958-5-22 33116 Tulare Kern river Canyon 6 miles south of Roads End P.O. - Sierra Nevada 944 Comment
  CAS-BOT-BC295888  Bahiopsis parishii John Thomas Howell 1927-8-1 2882 Riverside Near T Cross K Ranch, n. Colorado Desert 609 Comment
  CAS-BOT-BC106556  Balsamorhiza deltoidea John Thomas Howell; R. C. Barneby 1954-5-10 29374 Madera 4 miles south of North Fork - Sierra Nevada 670 Comment
  CAS-BOT-BC16747  Barbarea orthoceras John Thomas Howell; Gordon H. True 1967-7-4 42929 Tulare Sierra Nevada. Kern Plateau. Troy Meadow. 2377 Comment
  CAS-BOT-BC16803  Barbarea verna John Thomas Howell 1930-3-30 4640 Santa Clara West side of Pacheco Pass. 304 Comment
  GH341484  Beckmannia syzigachne J. T. Howell 1946-6-13 22019 Unknown Hicks Valley, Marin Co. Comment
  CAS-BOT-BC75961  Berberis pumila John Thomas Howell 1943-8-11 19277 Glenn Canyon of Snow Basin Creek. Comment
  A401427  Betula occidentalis J. T. Howell 1938-8-7 14356 Unknown Rock Creek Canyon north of Sherwin Grade Comment
  CAS-BOT-BC497325  Betula occidentalis John Thomas Howell 1934-6-13 12095 Modoc Warner Mts., Patterson Mill Road 1676 Comment
  CAS-BOT-BC102055  Bidens frondosa John Thomas Howell 1929-10-4 4427 Placer 1 1/2 miles from Auburn on road to Colfax Comment
  UC42857  Blechnum spicant Marshall A. Howe 1892-6-24 Marin Sausalito Comment
  NY162681  Blennosperma nanum var. robustum J. T. Howell 1947-5-14 23153 Marin Point Reyes Peninsula above McClure Beach Comment
  CAS-BOT-BC16833  Boechera John Thomas Howell 1958-7-23 33835 Fresno Sierra Nevada. Simpson Meadow, Middle Fork of the Kings River. 1828 Comment
  CAS-BOT-BC15816  Boechera arcuata John Thomas Howell; Gordon H. True 1967-5-7 42183 Plumas Sierra Nevada. Injin Jim Campground at confluence of Granite Creek and North Fork of Feather River. 609 Comment
  CAS-BOT-BC16026  Boechera breweri subsp. breweri John Thomas Howell 1937-7-26 13540 Siskiyou Caribou Mountain. 2438 Comment
  CAS-BOT-BC16148  Boechera covillei John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50672 Lassen Sierra Nevada. Summit ridge of Diamond Mountain. 2346 Comment
  CAS-BOT-BC14050  Boechera lincolnensis John Thomas Howell 1928-4-2 3664 Inyo Black Mountains. 18 miles southeast of Ryan. Comment
  CAS-BOT-BC14447  Boechera platysperma John Thomas Howell; Gordon H. True 1967-8-9 43634 Tulare Sierra Nevada. Kern Plateau. Ca. 2.5 miles north of Blackrock Guard Station on Monache Jeep Trail. 2682 Comment
  CAS-BOT-BC14537  Boechera puberula John Thomas Howell 1950-7-15 26907 Tulare Sierra Nevada. South Fork of the Kern River. Bakeoven Meadows. 2468 Comment
  CAS-BOT-BC25404  Boechera retrofracta John Thomas Howell 1943-7-17 18464 Nevada West side of Donner Pass near Norden. Signal Hill. 2133 Comment
  CAS-BOT-BC25492  Boechera retrofracta John Thomas Howell 1946-7-14 22359 Inyo Rock Creek Lake Basin. Mosquito Flat. 3139 Comment
  CAS-BOT-BC25493  Boechera retrofracta John Thomas Howell 1946-7-16 s.n. Inyo Rock Creek Lake Basin. Morgan Pass. Comment
  CAS-BOT-BC25518  Boechera retrofracta John Thomas Howell 1938-8-10 14462 Madera Near Devil's Postpile. Comment
  CAS-BOT-BC25544  Boechera retrofracta John Thomas Howell 1938-8-10 14488 Mono Minaret Summit. Comment
  CAS-BOT-BC25704  Boechera sparsiflora John Thomas Howell 1925-5-27 1091 Placer Lake Tahoe. Emerald Bay Camp. 1889 Comment
  CAS-BOT-BC25734  Boechera stricta John Thomas Howell 1941-8-1 16645 Madera Near Garnet Lake. 2956 Comment
  CAS-BOT-BC25932  Boechera suffrutescens John Thomas Howell 1960-8-19 36145 Tehama Lassen Volcanic National Park. Brokeoff Mountain Trail. 2590 Comment
  CAS-BOT-BC25933  Boechera suffrutescens John Thomas Howell 1960-7-22 35901 Plumas Lassen Volcanic National Park. Devil's Kitchen to Drakesbad. 1828 Comment
  CAS-BOT-BC434507  Boerhavia diffusa John Thomas Howell; R. C. Barneby 1954-5-9 29311 Fresno At Piedra 170 Comment
  RSA88519  Boisduvalia densiflora var. densiflora J. T. Howell 1951-7-22 28119 Tulare Mineral King and vicinity; Mineral King Road. 2256 Comment
  RSA118032  Boisduvalia stricta J. T. Howell 1955-7-8 30624 Monterey Santa Lucia Camp, Arroyo Seco River. 610 Comment
  RSA54249  Bouteloua aristidoides D. F. Howe 1950-10-1 s.n. San Diego Sentenac Canyon. Comment
  SDSU5354  Bouteloua gracilis D. F. Howe 1946-8-1 1482 San Bernardino North side of Bear Valley Comment
  CAS-BOT-BC29995  Brassica juncea John Thomas Howell 1956-7-15 31679 San Francisco San Francisco. Waterfront Street near Mission Rock Terminal. Comment
  CAS-BOT-BC30272  Brassica nigra John Thomas Howell; Gordon H. True 1974-5-3 50329 Solano About 5 miles south of Winters near Sweeney Creek. Comment
  CAS-BOT-BC36695  Brassica rapa John Thomas Howell 1977-8-2 52483 Alpine Sierra Nevada. Silver Creek, about 1 mile northeast of Lake Alpine on Ebbetts Pass Road. In campground. 2346 Comment
  RSA506758  Brassica tournefortii D. F. Howe 1980-4-14 s.n. Imperial 19 miles east of Brawley on Highway 78. Comment
  UCR62088  Brassica tournefortii D. F. Howe 1980-4-14 s.n. Imperial Sonoran (Colorado) Desert, 19 mi east of Brawley on Hwy 78 Comment
  RSA792  Brickellia californica J. T. Howell 1927-11-5 801 Orange Racnho Santa Ana, W side. Comment
  SD77873  Brickellia desertorum Darley F. Howe 1970-9-17 4706 San Bernardino South side of Clark Mountain 1890 Comment
  CAS-BOT-BC100619  Brickellia oblongifolia var. linifolia John Thomas Howell 1928-6-14 3913 Inyo Surprise Canyon, Panamint Mts. Comment
  UC1177328  Brodiaea elegans subsp. elegans John Thomas Howell 1942-6-21 Marin San Anselmo Canyon Comment
  CAS-BOT-BC144142  Bromus John Thomas Howell 1955-4-27 s.n. San Mateo 0.3 mile north of Dam, Crystal Springs Road, on west side. Comment
  CAS-BOT-BC144206  Bromus arenarius John Thomas Howell 1957-4-30 32155 San Benito Near entrance to the Pinnacels. 320 Comment
  UCD57691  Bromus arizonicus John Thomas Howell 1956-3-22 31128 San Luis Obispo San Luis Obispo Co.: Shandon. Comment
  CAS-BOT-BC149404  Bromus berteroanus John Thomas Howell 1956-3-24 31135 Monterey Santa Lucia Mountains. Near top of Jolon Grade. Comment
  CAS-BOT-BC149452  Bromus berteroanus John Thomas Howell 1965-5-9 41282 Tulare About 4.5 miles east-northeast of Pixley. 83 Comment
  GH361686  Bromus berteroanus J. T. Howell 1957-4-29 32106 Unknown Summit of Mustang Grade 822 Comment
  RSA118088  Bromus berteroanus J. T. Howell 1957-4-29 32106 Monterey Summit of Mustang Grade. 823 Comment
  CAS-BOT-BC149122  Bromus carinatus var. carinatus John Thomas Howell; Gordon H. True 1967-5-29 42381 Tulare Sierra Nevada. Kern Plateau. Near north end of Lamont Meadow on road to Chimney Meadow. 1859 Comment
  CAS-BOT-BC149222  Bromus carinatus var. carinatus John Thomas Howell 1943-5-22 18120 Marin Fairfox. Comment
  CAS-BOT-BC149253  Bromus carinatus var. carinatus John Thomas Howell 1956-3-24 31134 Monterey Santa Lucia Mountains. Near top of Jolon Grade. Comment
  CAS-BOT-BC149300  Bromus carinatus var. carinatus John Thomas Howell 1956-3-25 31197 Monterey Salinas Valley, 6.4 miles from King City on Arroyo Seco road. Comment
  SD112430  Bromus carinatus var. carinatus Darley F. Howe 1939-6-12 859 San Diego Palomar. (IPB 2/07) Comment
  UC1177015  Bromus carinatus var. carinatus John Thomas Howell 1946-5-4 21748 Marin Dillons Beach Comment
  CAS-BOT-BC148973  Bromus carinatus var. carinatus John Thomas Howell 1963-5-12 39264 San Francisco San Francisco. Steiner Street near Vallejo Street. Comment
  CAS-BOT-BC148678  Bromus carinatus var. marginatus John Thomas Howell 1943-7-14 18326 Nevada West side of Donner Pass near Norden. 2133 Comment
  CAS-BOT-BC149153  Bromus carinatus var. marginatus John Thomas Howell 1960-3-22 35139 San Luis Obispo San Luis Obispo. Comment
  UCD59175  Bromus carinatus var. marginatus John Thomas Howell 1958-5-26 33412 Inyo Sierra Nevada. Onion Valley road. 2225 Comment
  CAS-BOT-BC156207  Bromus catharticus John Thomas Howell 1956-3-11 30923 Orange Yorba Linda. Comment
  CAS-BOT-BC156258  Bromus catharticus John Thomas Howell 1957-6-24 32742 Inyo Near Roadside drinking fountain, 10 miles south of Olancha. Comment
  CAS-BOT-BC156269  Bromus catharticus John Thomas Howell 1958-5-12 33027 Alameda University Avenue at Santa Fe Railroad Station. Berkeley. Comment
  CAS-BOT-BC155877  Bromus ciliatus John Thomas Howell 1940-8-7 16035 Tulare East Lake. 2926 Comment
  SD44646  Bromus commutatus D. F. Howe 1951-5-1 Placer Placer County 456 Comment
  CAS-BOT-BC155796  Bromus diandrus John Thomas Howell 1961-6-21 36670 Plumas Sierra Nevada. Greenville. 1097 Comment
  CAS-BOT-BC155124  Bromus hordeaceus John Thomas Howell 1957-5-26 32409 San Francisco San Francisco. North base of Lone Mountain. Comment
  CAS-BOT-BC155234  Bromus hordeaceus John Thomas Howell 1955-6-12 30330 E Trinity Weaverville. Comment
  SEINET10520259  Bromus laevipes John Thomas Howell 1943-5-11 Howell 18056 Lake 2.9 miles north of Middletown. Comment
  CAS-BOT-BC162321  Bromus madritensis John Thomas Howell 1963-5-5 39059 Monterey Mustang Grade, west of Priest Valley. 670 Comment
  CAS-BOT-BC162329  Bromus madritensis John Thomas Howell 1947-4-27 23096 Marin Bald Mountain west of San Anselmo. Comment
  CAS-BOT-BC162330  Bromus madritensis John Thomas Howell 1969-5-5 45571 Marin Tiburon Peninsula. Ring Hill. Comment
  CAS-BOT-BC162331  Bromus madritensis John Thomas Howell 1944-4-16 19390 Marin Mount Tamalpais. Corte Madera Ridge. Comment
  CAS-BOT-BC162347  Bromus madritensis John Thomas Howell 1962-7-8 38325 Kern Sierra Nevada. Greenhorn Mountains. 1.5 mile southeast of Summit. 1524 Comment
  CAS-BOT-BC162335  Bromus madritensis John Thomas Howell 1990-2-13 s.n. Marin Northgate Drive near Sears. (near Nova Albion) Comment
  RSA201353  Bromus marginatus J. T. Howell 1960-7-18 35564 Plumas Lassen Volcanic National Park; Drakesbad 1677 Comment
  RSA201354  Bromus marginatus J. T. Howell 1960-7-20 35760 Plumas Boiling Springs Lake 1799 Comment
  POM364031  Bromus orcuttianus J. T. Howell 1948-7-23 24942 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows. 2896 Comment
  CAS-BOT-BC162020  Bromus racemosus John Thomas Howell 1962-6-16 37628 Butte Sierra Nevada. Concow School north of Yankee Hill. 533 Comment
  CAS-BOT-BC161926  Bromus rubens John Thomas Howell 1958-5-24 33287 Inyo Sierra Nevada. Whitney Portal Road. 2346 Comment
  CAS-BOT-BC161962  Bromus rubens John Thomas Howell; Gordon H. True 1967-6-11 42561 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  RSA128334  Bromus stamineus J. T. Howell 1952-6-2 28319 San Francisco California St. near Presidio Av., San Francisco. Comment
  CAS-BOT-BC161631  Bromus sterilis John Thomas Howell; Gordon H. True 1969-6-25 45859 Sierra Sierra Nevada. North Fork of Yuba River, 5 miles east of Indian Valley. 762 Comment
  CAS-BOT-BC161647  Bromus sterilis John Thomas Howell 1955-5-13 30150 Marin Shell Beach. Comment
  CAS-BOT-BC161621  Bromus sterilis John Thomas Howell 1952-5-3 28311 Alameda Berkeley. Tilden Park. Botanic Garden. Comment
  CAS-BOT-BC161545  Bromus suksdorfii John Thomas Howell 1951-7-17 27845 Tulare Mineral King and Vicinity. White Chief Trail. 2834 Comment
  CAS-BOT-BC185552  Bromus tectorum John Thomas Howell 1944-8-17 20677 Tuolumne Tuolumne Meadows. Parsons Lodge. Comment
  SD112418  Bromus tectorum Darley F. Howe 1939-6-12 861 San Diego Palomar Comment
  RSA224262  Bryonia dioica J. T. Howell 1957-6-21 32691 a San Francisco Golden Gate Park, near Stow Lake, San Francisco Comment
  RSA128333  Calamagrostis bolanderi J. T. Howell 1953-7-16 s.n. Mendocino 3 miles east of Point Area Comment
  RSA40186  Calamagrostis koelerioides J. T. Howell 1943-8-10 19269 Glenn Black Butte Comment
  RSA38334  Calamagrostis purpurascens J. T. Howell 1948-7-26 25043 Tulare Center Basin 366 Comment
  CAS-BOT-BC438346  Calandrinia ciliata John Thomas Howell 1933-5-28 11372 Alameda Summit of Berkeley Hills at head of Strawberry Canyon. Comment
  CAS-BOT-BC438487  Calandrinia ciliata John Thomas Howell; Walter Knight; Irja Knight; Gordon True 1967-5-7 1840 Plumas West edge of Butterfly Valley proper. 1066 Comment
  CAS-BOT-BC167283  California macrophylla John Thomas Howell 1940-4-7 15393 Alameda Corral Hollow Comment
  GH363416  California macrophylla J. T. Howell 1933-4-22 11084 Unknown Near San Benito Comment
  CAS-BOT-BC80402  Calocedrus decurrens John Thomas Howell 1962-9-23 38803 Kern Near Tiger Flat, Greenhorn Mountains 1981 Comment
  CAS-BOT-BC244932  Calochortus leichtlinii John Thomas Howell 1934-7-13 12101 Modoc N fork of Barber Creek. 1828 Comment
  CAS-BOT-BC490237  Calochortus leichtlinii John Thomas Howell; Gordon H. True 1970-7-14 5551 Sierra Verdi Peak Road, 1 mile below Lookout. 2499 Comment
  SD81259  Calochortus tolmiei Darley F. Howe 1970-9-30 Del Norte Rowdy Creek Road. 518 Comment
  CAS-BOT-BC494047  Calochortus venustus John Thomas Howell 1931-5-12 6471 Contra Costa Nortonville Comment
  SD112774  Calochortus weedii var. weedii Darley F. Howe 1937-6-22 522 San Diego Laguna Mts., near Junction. Comment
  CAS-BOT-BC181490  Caltha leptosepala John Thomas Howell 1943-7-18 18554 Nevada Meadow nw. of Castle Peak Comment
  RSA78610  Calycadenia truncata subsp. microcephala J. T. Howell 1943-5-10 18009 Lake 5 miles west of Lakeport on road to Hopland Comment
  SD51029  Calycoseris parryi Darley F. Howe 1960-4-28 2915 San Bernardino Kingston Mountains. 915 Comment
  CAS-BOT-BC221319  Calystegia macrostegia subsp. tenuifolia John Thomas Howell 1930-5-10 4801 Riverside At top of St. John's Grade Comment
  CAS-BOT-BC221204  Calystegia malacophylla var. berryi John Thomas Howell 1942-7-24 17120 Tulare Mineral King Comment
  CAS-BOT-BC436408  Calystegia subacaulis John Thomas Howell 1946-5-16 s.n. Marin W. Angel Island Comment
  CAS-BOT-BC224344  Calystegia subacaulis subsp. subacaulis John Thomas Howell 1956-5-6 31341 San Francisco Sierra & 22nd Sts., San Francisco Comment
  RSA40204  Camassia leichtlinii subsp. suksdorfii J. T. Howell 1944-7-14 19774 Mendocino Anthony Peak, west side. Comment
  RSA2595  Camissonia bistorta J. T. Howell 1928-7-9 1059 Riverside Temescal Canyon, 6 miles south of Glen Ivy 335 Comment
  SDSU8584  Camissonia campestris subsp. campestris D. F. Howe 1951-5-5 2140 Santa Barbara 853 Comment
  NY851171  Camissonia claviformis var. claviformis J. T. Howell 1958-5-28 33533 Inyo Bishop Creek 1951 Comment
  RSA21998  Camissonia micrantha J. T. Howell 1938-5-1 13773 San Mateo Colma Canyon. Comment
  SD62090  Camissonia parvula Darley F. Howe 1965-5-5 Mono 6.7 miles from south entrance to Inyo National Forest on Highway 395. 2133 Comment
  SDSU5507  Camissonia refracta D. F. Howe 1959-4-13 2687 San Bernardino 15 miles south of Shoshone Comment
  CAS-BOT-BC160837  Camissonia tanacetifolia subsp. quadriperforata John Thomas Howell 1962-6-18 37769 Plumas Sierra Valley near Beckwourth 1487 Comment
  CAS-BOT-BC191092  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-6-12 12000 Modoc 6 mi. S of Davis Creek. Comment
  CAS-BOT-BC160366  Camissoniopsis cheiranthifolia subsp. cheiranthifolia John Thomas Howell 1930-6-8 5273 Sonoma At north end of Bodega Bay Comment
  CAS-BOT-BC160507  Camissoniopsis cheiranthifolia subsp. suffruticosa John Thomas Howell 1931-5-27 6555 Ventura 10 miles nw. of Ventura on road to Santa Barbara Comment
  UC890554  Campanula rotundifolia John Thomas Howell 1939-8-4 15046 Siskiyou Marble Rim, Marble Mts. 1889 Comment
  CAS-BOT-BC37238  Cardamine breweri John Thomas Howell 1941-8-8 16831 Madera Garnet Creek to San Joaquin Mountain. Comment
  CAS-BOT-BC37556  Cardamine californica John Thomas Howell 1931-3-22 5968 Monterey Stone Canyon 13 miles east of Salinas Valley. Comment
  CAS-BOT-BC37869  Cardamine oligosperma John Thomas Howell 1933-5-28 11354 Alameda Berkeley Hills. Strawberry Canyon. Comment
  CDA6873  Carduus pycnocephalus J. T. Howell 1940-5-21 1 San Francisco On the Marina, San Francisco. 0 Comment
  CAS-BOT-BC21219  Carex John Thomas Howell 1943-8-4 19029 Glenn Summit ridge north of Black Butte. Comment
  CAS-BOT-BC18355  Carex John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-25 54340 Plumas Sierra Nevada. 2.8 miles north-northeast of Englemine on Diamond Mountain Road. 1341 Comment
  CAS-BOT-BC20314  Carex abrupta John Thomas Howell 1949-7-19 25521 Tulare Rock Creek. 3200 Comment
  CAS-BOT-BC20324  Carex abrupta John Thomas Howell 1942-7-26 17244 Tulare Mineral King. Comment
  CAS-BOT-BC20348  Carex abrupta John Thomas Howell 1944-8-5 19961 Tuolumne Tuolumne Meadows. Near Parsons Lodge. Comment
  RSA35088  Carex abrupta J. T. Howell 1944-8-16 20588 Tuolumne Mono Pass Trail. Comment
  CAS-BOT-BC17936  Carex angustata John Thomas Howell 1960-7-22 35873 Plumas Lassen Volcanic National Park. Drakesbad. 1828 Comment
  CAS-BOT-BC19038  Carex athrostachya John Thomas Howell; Gordon H. True 1970-7-30 47205 Tulare Kern Plateau. Along Salmon Creek at north end of Big Meadow. 2377 Comment
  CAS-BOT-BC19715  Carex athrostachya John Thomas Howell 1943-7-17 18447 Nevada West side of Donner Pass near Norden. 2133 Comment
  CAS-BOT-BC19725  Carex athrostachya John Thomas Howell 1951-6-27 27591 Plumas Sierra Nevada. McRae Meadow. 1981 Comment
  CAS-BOT-BC19533  Carex bolanderi John Thomas Howell 1947-7-21 23448 San Bernardino San Bernardino Mountains. Lost Creek. 1920 Comment
  RSA98027  Carex bolanderi J. T. Howell 1951-7-22 28128 Tulare Mineral King and vicinity; Mineral King Road. 2256 Comment
  POM304482  Carex brainerdii J. T. Howell 1940-5-31 15550 Mariposa Yosemite Valley. Comment
  SD130960  Carex brainerdii John Thomas Howell, Gordon H. True 1967-5-7 42186 Plumas Sierra Nevada; Injin Jim Campground at confluence of Granite Creek and North Fork of Feather River. 609 Comment
  SEINET8145962 Image available Carex brainerdii J. T. Howell 1944-1 19783 Unknown Comment
  CAS-BOT-BC34051  Carex brevicaulis John Thomas Howell 1952-3-4 28298 Monterey Just south of Little Sur. Comment
  RSA0079892  Carex brevicaulis John Thomas Howell 1946-5-4 21727 Marin Near Dillons Beach. Comment
  RSA0079894  Carex brevicaulis John Thomas Howell 1953-5-7 28945 Monterey Huckleberry Hill, Monterey. Comment
  CAS-BOT-BC34085  Carex breweri John Thomas Howell 1960-8-19 36134 Tehama Lassen Volcanic National Park. Brokeoff Mountain Trail. 2438 Comment
  CAS-BOT-BC34128  Carex breweri John Thomas Howell 1944-8-16 20630 Mono Mono Pass. Comment
  CAS-BOT-BC34168  Carex breweri John Thomas Howell 1948-7-24 24974 Fresno Bullfrog Lake. 3240 Comment
  CAS-BOT-BC34181  Carex breweri John Thomas Howell 1949-7-22 25596 Tulare Mt. Guyot. 3505 Comment
  CAS-BOT-BC34295  Carex congdonii John Thomas Howell 1946-7-24 22692 Fresno Mono Mesa above Gold Lake. Comment
  GH424074  Carex congdonii J. T. Howell 1941-8-2 16681 Unknown Near Garnet Lake 2956 Comment
  CAS-BOT-BC34467  Carex deflexa var. boottii John Thomas Howell 1946-7-20 22558 Fresno Mono Rock. 3352 Comment
  CAS-BOT-BC34957  Carex densa John Thomas Howell 1954-5-17 29720 El Dorado Sierra Nevada. 1 mile southwest of Garden Valley. 609 Comment
  CAS-BOT-BC19821  Carex douglasii John Thomas Howell; Gordon H. True 1967-7-3 42855 Tulare Sierra Nevada. Kern Plateau. Rockhouse Meadow. 1706 Comment
  CAS-BOT-BC20071  Carex echinata John Thomas Howell 1958-8-2 34173 Fresno Sierra Nevada. Copper Creek Canyon. Tent Meadow (lower). 2316 Comment
  RSA201270  Carex echinata subsp. echinata J. T. Howell 1961-6-20 36579 Tehama Bluff Falls. 1982 Comment
  RSA201294  Carex echinata subsp. echinata J. T. Howell 1961-6-20 36579 Tehama Bluff Falls. 1982 Comment
  RSA78560  Carex echinata subsp. phyllomanica J. T. Howell 1943-7-4 18255 Marin Ledum Swamp on road to Point Reyes, Point Reyes Peninsula. Comment
  CAS-BOT-BC19979  Carex feta John Thomas Howell 1974-7-10 50557 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UC1147821  Carex feta John Thomas Howell, J. W. Stacey 1937-6-6 13038 Sonoma Pitkin Marsh Comment
  CAS-BOT-BC20281  Carex filifolia var. erostrata John Thomas Howell; Gordon H. True 1970-7-28 47010 Tulare Sierra Nevada. Kern Plateau. West side of Big Meadow just south of Pipe Spring. 2377 Comment
  CAS-BOT-BC21205  Carex fissuricola John Thomas Howell 1969-8-26 45936 Tulare The Sierra Nevada. Monarch Creek Trail near Mineral King. 2895 Comment
  CAS-BOT-BC20679  Carex fracta John Thomas Howell 1943-7-21 18647 Placer Donner Pass to Mt. Lincoln. Comment
  CAS-BOT-BC20721  Carex fracta John Thomas Howell 1947-7-22 23503 San Bernardino San Bernardino Mountains. South Fork, Santa Ana River. 2377 Comment
  CAS-BOT-BC20815  Carex fracta John Thomas Howell 1950-7-19 27093 Tulare North end of Hessian Meadows. 2590 Comment
  CAS-BOT-BC20681  Carex fracta John Thomas Howell 1938-8-2 14012 Placer Near Calneva. Comment
  CAS-BOT-BC20839  Carex garberi John Thomas Howell; J. W. Stacey 1936-6-7 12642 Marin Ledum Swamps on road to Point Reyes. Comment
  SD72053  Carex globosa John Thomas Howell 1955-6-2 30258 A Sonoma Near Vine Hill School. Comment
  UC1026409  Carex globosa John Thomas Howell 1953-3-15 28923 Contra Costa Rock City Mt. Diablo Comment
  UCR74656  Carex globosa J. T. Howell 1944-4-2 19368 A Marin SE of Laurel Dell, Mt. Tamalpais Comment
  SEINET7559871 Image available Carex globosa John Thomas Howell 1946-5-14 21843 Marin Portrero Meadow, Mt. Tamalpais. Comment
  CAS-BOT-BC28375  Carex gracilior John Thomas Howell 1947-6-5 23238 Sonoma Cunningham Marsh. Comment
  CAS-BOT-BC28387  Carex gracilior John Thomas Howell 1945-5-9 20849 Marin Ignacis Comment
  CAS-BOT-BC146562  Carex gynodynama John Thomas Howell 1945-6-24 21240 Marin Willow Meadow, Mt. Tamalpais Comment
  CAS-BOT-BC21757  Carex hassei John Thomas Howell 1928-6-19 4031 Inyo Sourdough Canyon near Panamint City, Panamint Mountains. 2286 Comment
  CAS-BOT-BC21789  Carex hassei John Thomas Howell 1947-7-22 23505 San Bernardino South Fork, Santa Ana River. 2377 Comment
  CAS-BOT-BC22285  Carex hassei John Thomas Howell 1960-7-18 35508 Plumas Drakesbad. 1828 Comment
  CAS-BOT-BC20997  Carex helleri John Thomas Howell 1949-7-22 25631 Tulare Mt. Guyot. 3657 Comment
  CAS-BOT-BC22008  Carex heteroneura John Thomas Howell 1951-7-17 27824 Tulare Mineral King and Vicinity. White Chief Trail. 2743 Comment
  CAS-BOT-BC22095  Carex heteroneura John Thomas Howell 1946-9-1 22966 El Dorado Echo Summit. Comment
  CAS-BOT-BC28082  Carex hoodii John Thomas Howell 1937-7-25 13484 Siskiyou Caribou Basin, Salmon-Trinity Alps. 2286 Comment
  CAS-BOT-BC28083  Carex hoodii John Thomas Howell 1937-7-21 13196 Siskiyou South Fork of Salmon River near Big Flat. 1524 Comment
  CAS-BOT-BC28153  Carex hoodii John Thomas Howell 1947-7-22 23507 San Bernardino South Fork, Santa Ana River, San Bernardino Mts. Comment
  CAS-BOT-BC28066  Carex illota John Thomas Howell 1946-7-14 22326 Inyo Mosquito Flat, Rock Creek Lake Basin. 3139 Comment
  CAS-BOT-BC7841  Carex incurviformis John Thomas Howell 1946-7-24 22700 Inyo Mono Mesa. 3657 Comment
  UC824334  Carex incurviformis var. danaensis John Thomas Howell 1938-8-11 14546 Tuolumne Mt. Dana 3810 Comment
  CAS-BOT-BC7561  Carex integra John Thomas Howell 1943-8-10 19260 A Glenn Black Butte. Comment
  CAS-BOT-BC7562  Carex integra John Thomas Howell 1943-8-4 19013 Glenn Plaskett Meadows. 1828 Comment
  RSA97925  Carex integra J. T. Howell 1951-6-27 27591 A Plumas McRae Meadow. 1982 Comment
  CAS-BOT-BC35455  Carex jonesii John Thomas Howell; Gordon H. True 1966-7-11 41650 Tulare Kern Plateau, Poison Meadow 2286 Comment
  CAS-BOT-BC35781  Carex jonesii J. T. Howell 1934-6-14 12164 A Lassen Warner Mts.; near Lost Lake 2438 Comment
  RSA43486A  Carex jonesii J. T. Howell 1943-8-3 18932 Glenn Plaskett Meadows. 1829 Comment
  UCD140409  Carex jonesii John Thomas Howell 1960-7-22 35877 Plumas Lassen Volcanic National Park. Drakesbad. 1676 Comment
  CDA33099  Carex leavenworthii J. T. Howell 1969-4-22 45552 Amador Sutter Creek. 0 Comment
  CAS-BOT-BC31174  Carex lemmonii John Thomas Howell; J. W. Stacey 1936-7-26 12681 Sonoma Pitkin Marsh. 5 mi N of Sebastopol. Comment
  CAS-BOT-BC31102  Carex luzulina John Thomas Howell 1936-8-27 12841 Trinity Near Trinity Center. Comment
  SEINET12882800 Image available Carex luzulina var. ablata J. T. Howell 1937-1 13332 Unknown Comment
  CAS-BOT-BC31591  Carex luzulina var. luzulina John Thomas Howell; J. W. Stacey 1936-6-7 12641 Marin Ledum Swamp on road to Point Reyes. Comment
  CAS-BOT-BC31654  Carex lyngbyei John Thomas Howell 1949-5-22 25323 Marin Salt marsh, 1 mi S of Inverness. Comment
  CAS-BOT-BC31848  Carex microptera John Thomas Howell 1951-7-17 27850 Tulare White Chief Trail 2895 Comment
  SD130936  Carex microptera John Thomas Howell 1950-7-14 26853 Tulare Sierra Nevada; Bakeoven Meadows; South Fork of Kern River. 2469 Comment
  SEINET7567652 Image available Carex microptera John Thomas Howell 1936-8-27 12851 Trinity Near Trinity Center. Comment
  UC905008  Carex multicaulis John Thomas Howell 1947-7-22 23483 San Bernardino South Fork Santa Ana River San Bernardino Mts. 1981 Comment
  CAS-BOT-BC119979  Carex multicostata John Thomas Howell 1944-8-12 20344 Tuolumne Between Tioga Pass and Gaylor Lakes. Comment
  SEINET10713220  Carex multicostata John Thomas Howell 1943-8-3 Howell 18972 Glenn 1829 Comment
  POM248608  Carex nervina J. T. Howell 1938-8-10 14468 Madera Near Devil s Postpile. Comment
  UC904978  Carex obnupta John Thomas Howell 1946-7-4 22179 Marin Dillons Beach Comment
  CAS-BOT-BC118876  Carex pellita John Thomas Howell; Gordon H. True 1966-7-11 41756 Tulare Horse Meadow, Kern Plateau. 2255 Comment
  CAS-BOT-BC118390  Carex praegracilis John Thomas Howell 1962-6-9 38353 Kern Alkaline flats, Isabella 762 Comment
  CAS-BOT-BC118391  Carex praegracilis John Thomas Howell; Gordon H. True 1971-6-16 47995 Kern Weldon Meadow. 1981 Comment
  CAS-BOT-BC118399  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49193 Lassen Elysian Valley, northwest of Janesville. 1325 Comment
  CAS-BOT-BC118431  Carex praegracilis John Thomas Howell 1945-5-20 20871 Marin Tiburon Comment
  SD37179  Carex praegracilis Darley F. Howe 1939-5-23 San Diego Cuyamaca Lake Comment
  CAS-BOT-BC118430  Carex praegracilis John Thomas Howell 1944-4-23 19404 Marin Edge of salt marsh, hills SE of Kentfield. Comment
  RSA220006  Carex praegracilis J. T. Howell 1969-5-5 45566 Marin Railroad yards, Tiburon. Comment
  RSA91047  Carex preslii J. T. Howell 1937-7-24 13431 Siskiyou Caribou Basin, Salmon-Trinity Alps. 1982 Comment
  SEINET10380475  Carex rossii John Thomas Howell 1963-7-9 39655 El Dorado Foot of Echo Summit grade, one mile southwest of Meyers 2012 Comment
  CAS-BOT-BC118150  Carex rossii John Thomas Howell 1960-8-22 36408 Shasta Pond north of Summit Lake 2042 Comment
  CAS-BOT-BC118151  Carex rossii John Thomas Howell 1961-6-19 36520 Shasta Dry slope, Manzanita Lake 1783 Comment
  CAS-BOT-BC118187  Carex rossii John Thomas Howell; Gordon H. True 1971-7-13 48341 Tulare NE end of Big Meadow 2438 Comment
  SEINET8128133 Image available Carex rossii J. T. Howell 1943-1 18303 Unknown Comment
  CAS-BOT-BC117379  Carex sartwelliana John Thomas Howell 1962-7-10 38506 Kern Shirley Meadows. Greenhorn Mountains. 2011 Comment
  CAS-BOT-BC118250  Carex scopulorum var. bracteosa John Thomas Howell 1938-8-13 14578 Mariposa Snow Flat. Comment
  CAS-BOT-BC117409  Carex senta John Thomas Howell 1962-9-25 38896 Kern Along low water line of Kern River 3 mi N of Kernville. 822 Comment
  CAS-BOT-BC117248  Carex spectabilis John Thomas Howell 1937-7-24 13432 Siskiyou Caribou Basin, Salmon-Trinity Alps. 2286 Comment
  CAS-BOT-BC117304  Carex spectabilis John Thomas Howell 1942-8-8 17838 Tulare North side Farewell Gap. Comment
  UC710433  Carex spectabilis John Thomas Howell 1944-8-10 20218 Mono n side Mt. Dana Comment
  SEINET7575712 Image available Carex spectabilis John Thomas Howell 1939-8-8 15189 Siskiyou Black Mt, Marble Mts. Comment
  CAS-BOT-BC117370  Carex stipata var. stipata John Thomas Howell 1976-7-15 51845 Plumas Snake Lake, ca 4 mi NW of Quincy 1219 Comment
  SDSU11683  Carex straminiformis D. F. Howe 1962-8-6 3402 Siskiyou Mt. Shasta, Shasta National Forest. 2438 Comment
  UC836013  Carex straminiformis John Thomas Howell 1939-8-2 14908 Siskiyou Spirit Lake Marble Mts. 1828 Comment
  CAS-BOT-BC116815  Carex subbracteata var. subbracteata John Thomas Howell 1938-5-1 13776 San Mateo San Bruno Hills Comment
  CAS-BOT-BC116903  Carex subbracteata var. subbracteata John Thomas Howell; J. W. Stacey 1936-6-7 12652 Marin Pine woods on road to Point Reyes. Comment
  CAS-BOT-BC115769  Carex subfusca John Thomas Howell 1942-7-27 17295 Tulare Deer Creek between Timber Gap and Cliff Creek. Comment
  CAS-BOT-BC115836  Carex subfusca John Thomas Howell 1937-7-23 13338 Siskiyou South Fork of Salmon River near Big Flat. 1524 Comment
  CAS-BOT-BC116551  Carex subfusca John Thomas Howell 1943-7-27 18873 Placer Lake Tahoe near Tahoe Pines Comment
  CAS-BOT-BC116724  Carex subfusca John Thomas Howell; R. C. Barneby 1954-5-10 29347 Fresno 3 mi above Tollhouse. 1082 Comment
  RSA118057  Carex subfusca J. T. Howell 1955-7-8 30629 Monterey Santa Lucia Camp, Arroyo Seco River. 610 Comment
  SD112263  Carex subfusca Darley F. Howe 1939-6-12 1310 San Diego Palomar Mt. (IPB 12/06) Comment
  CAS-BOT-BC115765  Carex subfusca John Thomas Howell 1950-7-22 27187 Tulare Olacha Peak 3291 Comment
  SEINET8147521 Image available Carex subnigricans J. T. Howell 1942-1 17767 Unknown Comment
  CAS-BOT-BC115707  Carex tahoensis John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-28 53158 Alpine Subalpine western slope of Ebbetts Peak. 2773 Comment
  CAS-BOT-BC115506  Carex tumulicola John Thomas Howell 1938-5-1 13777 San Mateo San Bruno Hills. Comment
  CAS-BOT-BC115583  Carex tumulicola John Thomas Howell 1945-6-3 s.n. Marin Shell Beach Comment
  CAS-BOT-BC115367  Carex utriculata John Thomas Howell 1941-8-6 16794 Madera Shadow Creek below Lake Ediza Comment
  CAS-BOT-BC115479  Carex utriculata John Thomas Howell; Gordon H. True 1970-7-28 47005 Tulare West side of Big Meadow just S of Pipe Spring. 2377 Comment
  RSA52098  Carex utriculata J. T. Howell 1947-6-4 23212 Marin Near radio station, Point Reyes Peninsula Comment
  SD61088  Carex vesicaria Darley F. Howe 1964-7-22 Fresno On road to McKinley Grove, 4 miles from Shaver Lake in pool of water. 1707 Comment
  CAS-BOT-BC114916  Carex whitneyi John Thomas Howell 1943-7-14 18320 Nevada West side of Donner Pass near Norden. 2133 Comment
  RSA39814  Cassiope mertensiana subsp. californica J. T. Howell 1943-7-24 18793 Nevada Frog Lake Comment
  RSA35287  Castilleja affinis J. T. Howell 1944-6-11 19626 Santa Cruz About 1 mile east of Felton. Comment
  POM302994  Castilleja affinis J. T. Howell 1933-5-23 11325 San Francisco West of Sutro Forest. Comment
  JEPS58949  Castilleja affinis subsp. affinis John Thomas Howell 1946-5-16 21864 Marin Angel Island, se side Marin County Angel Island Comment
  SD132705  Castilleja affinis subsp. affinis Darley F. Howe 1936-4-26 312 San Diego Telegraph Canyon. Chula Vista Comment
  CAS-BOT-BC249561  Castilleja applegatei subsp. pallida John Thomas Howell 1944-8-6 20027 Tuolumne Slope north of Tuolumne Meadows Comment
  CAS-BOT-BC249565  Castilleja applegatei subsp. pallida John Thomas Howell 1938-8-11 14516 Tuolumne Mt. Dana 3200 Comment
  CAS-BOT-BC225994  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-1 12329 Modoc Duncan Horse Camp. 1355 Comment
  CAS-BOT-BC241202  Castilleja applegatei subsp. pinetorum John Thomas Howell; Gordon H. True 1970-6-24 46700 Tulare North Manter Creek, Big Meadow to Manter Meadow. Kern Plateau 2438 Comment
  CAS-BOT-BC249742  Castilleja applegatei subsp. pinetorum John Thomas Howell 1962-6-19 37852 Plumas The Buttes, n. Sierra Valley 1493 Comment
  GH365445  Castilleja applegatei subsp. pinetorum J. T. Howell 1942-8-3 17624 Unknown Kaweah Gap Comment
  RSA201327  Castilleja arachnoidea J. T. Howell 1960-8-19 36169 Shasta Summit ridge, Brokeoff Mtn. 2744 Comment
  POM259363  Castilleja arachnoidea subsp. schizotricha J. T. Howell 1939-8-8 15182 Siskiyou Marble Mountains: Black Mountain. Comment
  SD102790  Castilleja chromosa Darley F. Howe 1978-6-1 San Bernardino Ivanpah Mountains 1463 Comment
  SD81153  Castilleja chromosa Darley F. Howe 1971-6-24 Inyo Near stream 6 miles west of entrance to Inyo National Forest, west of Bishop 2042 Comment
  SD42618  Castilleja lasiorhyncha Darley F. Howe 1947-6-27 San Bernardino Bluff Lake. Comment
  SD114381  Castilleja latifolia Darley F. Howe 1939-7-28 898 San Francisco San Francisco Peninsula Comment
  SD114369  Castilleja mollis Darley F. Howe 1963-5-18 3718 San Luis Obispo Sand dunes, Lake Oso Flaco Comment
  CAS-BOT-BC32558  Castilleja muscipula var. armeniaca John Thomas Howell 1939-8-4 15061 Siskiyou Near Spirit Lake, Marble Mts. 1828 Comment
  SDSU10521  Castilleja wightii D. F. Howe 1961-7-27 3070 Marin On #1, 0.6 mile south of Stinson Beach. 30 Comment
  CAS-BOT-BC39616  Caulanthus John Thomas Howell 1949-7-17 25397 Inyo Wonoga Peak. 2743 Comment
  CAS-BOT-BC38314  Caulanthus cooperi John Thomas Howell 1958-5-25 33373 Inyo Sierra Nevada. Carroll Creek. 1676 Comment
  CAS-BOT-BC38437  Caulanthus coulteri John Thomas Howell; Gordon H. True 1971-6-17 48086 Kern Sierra Nevada. About 1 mile southeast of Bald Eagle Peak. 1828 Comment
  SD44619  Caulanthus coulteri Darley F. Howe 1951-5-5 2142 Santa Barbara 1280 Comment
  SD81273  Caulanthus crassicaulis Darley F. Howe 1969-5-17 San Bernardino Clark Mountain 1584 Comment
  CAS-BOT-BC41026  Caulanthus flavescens John Thomas Howell 1933-3-26 10881 Alameda Tesla. Comment
  CAS-BOT-BC40222  Caulanthus lasiophyllus John Thomas Howell 1946-5-12 21790 Marin Carson Country. Comment
  CAS-BOT-BC40223  Caulanthus lasiophyllus John Thomas Howell 1940-5-12 15429 Marin Between Little Carson and Carson Ridge. Comment
  CAS-BOT-BC48901  Ceanothus cuneatus John Thomas Howell 1963-6-21 39480 Monterey Mustang Grade east of San Lorenzo Creek Comment
  CAS-BOT-BC49156  Ceanothus cuneatus John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-5-20 53507 Trinity One-eye Flat, about 1.7 miles north of Carrville - Trinity River Canyon 755 Comment
  CAS-BOT-BC49276  Ceanothus cuneatus John Thomas Howell; Gordon H. True 1971-7-12 48338 Kern Sierra Nevada - east side of Greenhorn Range 3 miles west of Wofford 1280 Comment
  CAS-BOT-BC49296  Ceanothus cuneatus John Thomas Howell 1931-4-3 6153 Lake Butts Canyon Road to Middletown, 6.5 miles from Aetna Springs Comment
  SDSU10340  Ceanothus cuneatus D. F. Howe 1960-4-9 2841 San Luis Obispo Area east of Morro Bay. 61 Comment
Read comments
Jul 21 2012
  A349240  Ceanothus divergens J. T. Howell 1941-4-5 16162 Unknown Franz Valley Comment
  A349244  Ceanothus divergens J. T. Howell 1941-3-9 16154 Unknown SW. of St. Helena Comment
  UC1177453  Ceanothus foliosus John Thomas Howell 1946-5-25 21942 Marin hills w of Corte Madera Comment
  CAS-BOT-BC51418  Ceanothus masonii John Thomas Howell 1944-4-2 19364 Marin Bolinas Ridge Comment
  RSA35306  Ceanothus masonii J. T. Howell 1944-4-2 s.n. Marin Bolinas Ridge Comment
  SD41522  Ceanothus megacarpus Darley F. Howe 1947-3-22 1515 Los Angeles Topanga Canyon Comment
  SDSU10426  Ceanothus spinosus D. F. Howe 1947-4-4 1545 Orange Santa Ana Mtns. Comment
  CAS-BOT-BC272147  Centaurea cineraria John Thomas Howell 1943-5-23 18159 Alameda Hills above Mills College Comment
  JEPS88689  Centromadia fitchii John Thomas Howell 30904 Contra Costa near Turtle Rock; Mt. Diablo 259 Comment
  CAS-BOT-BC288513  Centromadia fitchii John Thomas Howell 1930-10-11 5548 Alameda 1 mile N of Livermore Comment
  CAS-BOT-BC288814  Centromadia fitchii John Thomas Howell 1930-9-14 5485 Sonoma 6 miles N of Geyserville Comment
  CAS-BOT-BC279293  Centromadia pungens subsp. pungens John Thomas Howell 1930-9-28 5513 San Joaquin Holt Comment
  CAS-BOT-BC222896  Cephalanthus occidentalis John Thomas Howell 1961-9-22 36764 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CAS-BOT-BC384933  Cerastium arvense John Thomas Howell 1961-9-22 36792 Plumas At Lewisia Rock, North Fork of Feather River 640 Comment
  CAS-BOT-BC388296  Cerastium glomeratum John Thomas Howell 1976-4-27 51601 Lake Lakeport 411 Comment
  CAS-BOT-BC388356  Cerastium glomeratum John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1967-6-12 1994 Plumas Butterfly Botanical Area and Vicinity. Valley proper, near barn 1036 Comment
  CAS-BOT-BC207628  Cercis occidentalis John Thomas Howell 1934-7-4 12408 Siskiyou SE corner of Siskiyou Co. Comment
  CAS-BOT-BC135574  Cercocarpus betuloides var. betuloides John Thomas Howell; R. C. Barneby 1960-6-7 35433 Fresno Kings Canyon Road 6.5 miles northeast of Cherry Gap - Sierra Nevada 1554 Comment
  CAS-BOT-BC147698  Cercocarpus betuloides var. betuloides John Thomas Howell 1977-3-9 52316 San Diego North of Escondido on highway to Temecula Comment
  CAS-BOT-BC136957  Cercocarpus ledifolius var. intricatus John Thomas Howell 1928-6-14 3926 Inyo S. side of Surprise [Canon] Canyon near Panamint City, Panamint Mts. 2438 Comment
  CAS-BOT-BC143877  Cercocarpus ledifolius var. ledifolius John Thomas Howell; Gordon H. True 1967-8-9 43626 Tulare Six miles from Kennedy Meadows on road to Troy Meadow 2286 Comment
  CAS-BOT-BC279507  Chaenactis artemisiifolia John Thomas Howell 1928-4-22 3752 Ventura Point Mugu Comment
  CAS-BOT-BC276620  Chaenactis douglasii var. douglasii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50674 Lassen Summit ridge of Diamond Mountain 2346 Comment
  UC894449  Chaenactis douglasii var. douglasii J. Thomas Howell 1938-8-7 14321 Mono Crooked Creek [this is the Crooked Creek that is now under Lake Crowley] 2057 Comment
Read comments
Jul 2 2012
  CAS-BOT-BC284566  Chaenactis glabriuscula var. heterocarpha John Thomas Howell 1941-6-22 16321 Napa Hills sw. of St. Helena Comment
  CAS-BOT-BC284307  Chaenactis stevioides John Thomas Howell 1958-5-26 33450 Inyo Onion Valley Road, Sierra Nevada 1950 Comment
  SD128740  Chaenactis stevioides Darley F. Howe 1980-4-15 Riverside 1.0 mile west of Mesa Verde, south slope of McCoy Mountains, Highway 10. (IPB 10/07) Comment
  CAS-BOT-BC279667  Chaenactis xantiana John Thomas Howell 1950-7-26 27351 Tulare Summit Meadow Comment
  CAS-BOT-BC279742  Chaenactis xantiana John Thomas Howell; Gordon H. True 1966-7-11 41604 Tulare Canyon of Poison Meadow Creek on Cherry Hill Road, Kern Plateau 1920 Comment
  SDSU7125  Chaenactis xantiana D. F. Howe 1971-6-26 4745 Mono 12.4 miles north of Mono-Inyo Co. line on #6. 1463 Comment
  SD75834  Chamaesaracha nana Darley F. Howe 1969-8-12 Mono Hillside, east of Sonora Pass 2743 Comment
  GH347546  Chamaesyce vallis-mortae J. T. Howell 1958-5-23 33198 Unknown 10 miles east of Onyx 1036 Comment
  CAS-BOT-BC166035  Chamerion angustifolium subsp. circumvagum John Thomas Howell 1946-7-26 22783 Fresno Fourth Recess Comment
  CAS-BOT-BC66371  Cheilanthes covillei John Thomas Howell; Gordon H. True 1967-5-29 42292 Inyo 1/3 mile east of head of Nine Mile Canyon 1828 Comment
  CAS-BOT-BC68092  Cheilanthes parryi John Thomas Howell 1927-8-1 2886 Riverside N. Colorado Desert - steep sides of Morongo Canyon 609 Comment
  CAS-BOT-BC426342  Chenopodium John Thomas Howell 1975-7-23 51389 Lassen Susanville, south edge of town on highway to Janesville 1295 Comment
  POM203452  Chenopodium ambrosioides var. ambrosioides J. T. Howell 1933-11-19 11725 Solano 1 miles from Cordelia on road to Suisun. Comment
  CAS-BOT-BC460948  Chenopodium atrovirens John Thomas Howell 1946-7-15 22377 Inyo Rock Crerek Lake Basin: Mosquito Flat 3139 Comment
  RSA88585  Chenopodium pumilio J. T. Howell 1951-8-19 28183 Plumas Greenville. 1098 Comment
  OBI22343  Chloris virgata John Thomas Howell 1954-11-2 30116 A San Luis Obispo Along Hwy at Shandon Comment
  SDSU4924  Chorizanthe cuspidata D. F. Howe 1966-6-1 4250 Marin Pt. Reyes Peninsula. Comment
  GH369843  Chorizanthe cuspidata var. villosa J. T. Howell 1946-5-4 21747 Unknown Dillons Beach Comment
  SD114252  Chorizanthe fimbriata var. fimbriata Darley F. Howe 1935-5-5 210 San Diego Mesa near Otay. Comment
  CAS-BOT-BC256909  Chorizanthe membranacea John Thomas Howell 1925-5-17 1070 Merced Hopeton Bridge on the Merced River Comment
  CAS-BOT-BC231980  Chorizanthe rigida John Thomas Howell 1928-3-24 3496 San Diego Near Palm Wash, w. Colorado Desert Comment
  CAS-BOT-BC244661  Chorizanthe staticoides John Thomas Howell 1931-5-31 6621 A Los Angeles San Gabriel Wash Comment
  CAS-BOT-BC32830  Chorizanthe staticoides var. staticoides J. T. Howell 1928-6-10 3876 Los Angeles San Gabriel Mts., Monrovia Canyon, near Deer Park Comment
  RSA137133  Chorizanthe xanti J. T. Howell 1957-6-25 s.n. Kern Tehachapi Mts., 2.5 miles SE of Keene 915 Comment
  CAS-BOT-BC15033  Chrysothamnus humilis John Thomas Howell 1934-7-1 12348 B Modoc Duncan Horse Camp. 1355 Comment
  RSA44441  Chrysothamnus nauseosus subsp. albicaulis J. T. Howell 1947-8-13 24042 Inyo Black Lake Trail, Big Pine Lakes 3049 Comment
  SBBG92161  Chrysothamnus viscidiflorus D. F. Howe 1980-9-26 Inyo St Hwy 168, in a small cyn 1740 Comment
  JEPS75261  Chrysothamnus viscidiflorus subsp. viscidiflorus John Thomas Howell and Gordon H. True 1967-8-9 43663 A Tulare about 4 mi ne of Blackrock Guard Station (Monache Jeep Trail); Sierra Nevada, Kern Plateau 2651 Comment
  SD70008  Chylismia arenaria Darley F. Howe 1968-3-19 Riverside Graham Pass, Little Chuckwalla Mountains. Comment
  CAS-BOT-BC105830  Cirsium andrewsii John Thomas Howell 1947-6-18 23275 Marin Dillons Beach Comment
  CAS-BOT-BC105831  Cirsium andrewsii John Thomas Howell 1939-6-4 14720 Marin Pt. Reyes Lighthouse Comment
  CAS-BOT-BC105835  Cirsium andrewsii John Thomas Howell 1939-6-4 14719 Marin Pt. Reyes Lighthouse Comment
  CAS-BOT-BC105839  Cirsium andrewsii John Thomas Howell 1939-7-2 14818 Marin Elk Valley, east of Tennessee Cove Comment
  GH427941  Cirsium andrewsii J. T. Howell 1939-6-4 14719 Unknown Point Reyes Lighthouse Comment
  POM179706  Cirsium andrewsii J. T. Howell 1930-6-22 5321 Marin Valley above Rodeo Lagoon Comment
  CAS-BOT-BC284443  Cirsium brevistylum John Thomas Howell 1944-7-9 19697 Marin Inverness Ridge Comment
  CAS-BOT-BC277922  Cirsium canovirens John Thomas Howell 1934-6-9 11834 Nevada Truckee River Canyon near Floriston Comment
  CAS-BOT-BC278026  Cirsium cymosum John Thomas Howell 1955-7-19 30812 Plumas Portola 1478 Comment
  CAS-BOT-BC278036  Cirsium cymosum John Thomas Howell 1952-6-14 28336 Siskiyou Near Yreka Comment
  CAS-BOT-BC278084  Cirsium douglasii var. breweri John Thomas Howell 1943-8-9 19217 Glenn Plaskett Meadows 1828 Comment
  JEPS28114  Cirsium douglasii var. breweri John Thomas Howell 1960-8-20 36232 Tehama near Lassen Volcanic National Park; Morgan 1463 Comment
  CAS-BOT-BC279983  Cirsium douglasii var. douglasii John Thomas Howell 1931-9-27 8108 Mendocino 5.5 miles east of Point Arena Comment
  CAS-BOT-BC100943  Cirsium fontinale var. fontinale John Thomas Howell 1939-6-16 14746 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC100964  Cirsium hydrophilum var. vaseyi John Thomas Howell 1938-6-5 13897 Marin Azalea Flat, Mt. Tamalpais Comment
  CAS-BOT-BC280100  Cirsium occidentale var. californicum John Thomas Howell 1958-7-23 33807 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC280101  Cirsium occidentale var. californicum John Thomas Howell 1958-7-23 33807 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  OBI16745  Cirsium occidentale var. californicum John Thomas Howell 1948-6-15 24360 San Luis Obispo Red Hills SE of Shandon 762 Comment
  SD113208  Cirsium occidentale var. occidentale Darley F. Howe 1941-6-9 1114 Riverside San Jacinto Mountains 1525 Comment
  SDSU3799  Cirsium occidentale var. occidentale D. F. Howe 1977-6-30 4960 Monterey 7.7 miles on Carmel Valley Rd. from junction with G17. Comment
  CAS-BOT-BC280415  Cirsium occidentale var. venustum John Thomas Howell; Gordon H. True 1971-7-15 48528 Tulare On Dome Lands Trail about 0.5 miles south of Church Dome, Kern Plateau 2316 Comment
  CAS-BOT-BC288040  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CAS-BOT-BC280411  Cirsium occidentale var. venustum John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53810 Tulare Sherman Pass Road, 4.5 miles east of junction with Cherry Hill Road, Kern Plateau 2255 Comment
  CAS-BOT-BC286394  Cirsium occidentale var. venustum John Thomas Howell 1950-7-26 27359 Inyo Head of Summit Creek, east of Olancha Pass 2773 Comment
  CAS-BOT-BC288041  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  CAS-BOT-BC288684  Cirsium quercetorum John Thomas Howell 1939-6-4 14718 Marin Point Reyes lighthouse Comment
  CAS-BOT-BC280448  Cirsium quercetorum John Thomas Howell 1938-6-30 13940 Alameda Berkeley Hills on north-east slope near head of Wildcat Canyon Comment
  CAS-BOT-BC285752  Cirsium remotifolium John Thomas Howell 1937-7-4 13070 Sonoma Near Petrified Forest Comment
  CAS-BOT-BC288725  Cirsium remotifolium John Thomas Howell 1937-7-19 13133 Lake Elk Mt Comment
  CAS-BOT-BC288735  Cirsium remotifolium John Thomas Howell 1939-6-25 14796 Marin Summit Avenue, Mill Valley Comment
  CAS-BOT-BC288747  Cirsium remotifolium John Thomas Howell 1939-6-25 14797 Marin Summit Avenue, Mill Valley Comment
  CAS-BOT-BC288730  Cirsium remotifolium John Thomas Howell 1940-5-26 15520 Marin San Anselmo Comment
  CAS-BOT-BC288731  Cirsium remotifolium John Thomas Howell 1938-7-3 13942 Marin Near W end of Lucas Valley Comment
  CAS-BOT-BC288739  Cirsium remotifolium John Thomas Howell 1936-6-7 12631 Marin White's Hill E of San Geronimo Comment
  CAS-BOT-BC286320  Cirsium scariosum John Thomas Howell 1944-8-4 19911 Mono Devils Gate south of Fales Hot Springs Comment
  CAS-BOT-BC285771  Cirsium vulgare John Thomas Howell 1931-6-17 6723 Humboldt Redwood Highway 1 1/2 miles n. of Orick Comment
  CAS-BOT-BC438647  Cistanthe John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54278 Plumas Mt. Hough 2203 Comment
  CAS-BOT-BC438860  Cistanthe monandra John Thomas Howell 1930-5-10 4806 Riverside At top of St. John's Grade Comment
  CAS-BOT-BC162584  Clarkia John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54213 Plumas About 5 miles southeast of Mt. Hough on the road to Quincy - Sierra Nevada 1584 Comment
  RSA53772  Clarkia bottae D. F. Howe 1948-5-29 s.n. Los Angeles Santa Monica Mountains. Comment
  CAS-BOT-BC172325  Clarkia bottae John Thomas Howell 1928-4-22 3756 Ventura Bank above lagoon at Pt. Mugu Comment
  CAS-BOT-BC164283  Clarkia cylindrica subsp. cylindrica John Thomas Howell; Gordon H. True 1971-7-12 48331 Kern West slope of Greenhorn Range, 3 miles east of Glennville 1219 Comment
  CAS-BOT-BC164443  Clarkia dudleyana John Thomas Howell; Gordon H. True 1971-7-12 48330 Kern West slope of Greenhorn Range, 3 miles east of Glennville 1219 Comment
  CAS-BOT-BC172039  Clarkia gracilis subsp. gracilis John Thomas Howell 1934-6-30 12277 Modoc Duncan Horse Camp Comment
  CAS-BOT-BC172562  Clarkia purpurea subsp. purpurea John Thomas Howell 1974-7-10 50550 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CAS-BOT-BC163989  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1931-5-25 6551 Santa Barbara Mission Ridge, Santa Barbara Comment
  SD114010  Clarkia rhomboidea Darley F. Howe 1938-6-6 660 San Diego Laguna Mts. Comment
  SDSU8697  Clarkia rubicunda D. F. Howe 1963-7-31 3648 San Mateo Sea bluff, 3 miles south of Pacifica on #1 Comment
  JEPS43760  Clarkia similis John Thomas Howell 1928-5-6 3777 Los Angeles between Fern Lodge and Madrona Flat; San Gabriel Mts., East Fork of Santa Anita Canyon Comment
  RSA137122  Clarkia speciosa subsp. polyantha J. T. Howell 1957-6-25 32770 Kern Tehachapi Mountains. 3 miles NW of Keene. 762 Comment
  SD26295  Clarkia williamsonii Darley F. Howe 1939-7-20 Unknown Near Yosemite lodge, Yosemite National Park. Comment
Read comments
Jun 26 2012
  CAS-BOT-BC165859  Clarkia xantiana John Thomas Howell; Gordon H. True 1971-6-17 48109 Kern Between Bodfish Gap and Bodfish 1097 Comment
  CAS-BOT-BC439158  Claytonia exigua subsp. exigua John Thomas Howell 1925-3-22 848 Alameda Arroyo Mocho at ne. base of Cedar Mt. Comment
  CAS-BOT-BC439476  Claytonia parviflora subsp. parviflora John Thomas Howell 1976-5-18 51715 Kern Near Alta Sierra. Along old road from Alta Sierra to Wofford Heights. Greenhorn Mountains Comment
  CAS-BOT-BC439501  Claytonia parviflora subsp. parviflora John Thomas Howell 1931-4-4 6158 Lake St. Helena Creek Canyon, 4 miles south of Middletown Comment
  CAS-BOT-BC439500  Claytonia parviflora subsp. parviflora John Thomas Howell 1934-3-26 11800 Lake Mirabel Mine Comment
  CAS-BOT-BC439830  Claytonia perfoliata John Thomas Howell 1962-7-8 38286 Kern 1.5 miles se. of Summit, Greenhorn Mountains 1524 Comment
  CAS-BOT-BC439839  Claytonia perfoliata John Thomas Howell 1965-4-26 41185 Madera 3 miles south of Oakhurst. 914 Comment
  CAS-BOT-BC439847  Claytonia perfoliata John Thomas Howell 1964-4-26 40481 Mariposa Just southeast of Mariposa on the road to Morman Bar. 594 Comment
  CAS-BOT-BC439821  Claytonia perfoliata John Thomas Howell 1969-4-22 45541 Amador Fiddletown 518 Comment
  CAS-BOT-BC439829  Claytonia perfoliata John Thomas Howell 1962-7-11 38541 Kern Black Mt. Saddle, Greenhorn Mountains 1981 Comment
  CAS-BOT-BC439831  Claytonia perfoliata John Thomas Howell; Gordon H. True 1971-6-15 47860 Kern .3 miles from Lightners Flat, on road from Mt. Breckenridge to Havilah. 1706 Comment
  CAS-BOT-BC439835  Claytonia perfoliata John Thomas Howell; Gordon H. True 1971-6-14 47680 Kern 3 mi. west of Glennville on road to Woody 1158 Comment
  CAS-BOT-BC91500  Clematis lasiantha John Thomas Howell 1931-4-10 6217 Santa Barbara Santa Cruz Island. Canada del Puerta Zuela. Comment
  CAS-BOT-BC91440  Clematis lasiantha John Thomas Howell 1955-7-7 30560 Monterey Santa Lucia Mountains. Ridge southeast of Bear Mountain. 1371 Comment
  CAS-BOT-BC92552  Clematis ligusticifolia John Thomas Howell 1923-7-30 177 Mariposa Stella Lake, Wawona. 1219 Comment
  SDSU10579  Collinsia bartsiifolia var. davidsonii D. F. Howe 1960-4-10 2850 San Luis Obispo East of sand dunes south of Morro Bay. Comment
  SD81101  Collinsia parviflora Darley F. Howe 1971-7-2 Unknown El Dorado National Forest, near Lake Tahoe 1829 Comment
  CAS-BOT-BC180388  Comandra umbellata subsp. californica John Thomas Howell 1962-9-24 38865 Kern Summit of Cook's Peak, Greenhorn Mountains. Sierra Nevada 2103 Comment
  UCD96964  Conicosia pugioniformis John Thomas Howell 1943-10-30 19337 San Francisco East of Lake Merced, San Francisco. Comment
  CAS-BOT-BC286102  Conyza canadensis John Thomas Howell 1962-5-21 37141 Kern Kernville 807 Comment
  CAS-BOT-BC286113  Conyza canadensis John Thomas Howell 1974-7-10 50532 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC288939  Conyza canadensis John Thomas Howell; Gordon H. True 1967-7-6 43215 Tulare About 4.5 miles ENE of Pixley, from northern 1/3 of area 83 Comment
  JEPS75287  Conyza floribunda John Thomas Howell 1975-9-10 51506 San Francisco between Market and Mission Street (sidewalk Main Street); San Francisco Comment
  JEPS62609  Cordylanthus pilosus subsp. hansenii John Thomas Howell 1969-8-4 45876 Shasta about 9 mi ne Cottonwood Comment
  POM179670  Cordylanthus pilosus subsp. pilosus J. T. Howell 1930-9-14 5483 Mendocino 5 miles E of Boonville. Comment
  JEPS41341  Cordylanthus rigidus subsp. rigidus John Thomas Howell 1962-9-22 38694 Kern Woffard; Sierra Nevada 792 Comment
  LA209076  Cordylanthus rigidus subsp. rigidus John Thomas Howell; 1933-8-13 11500 Santa Clara 3 mi. from Smith Creek on road to Mt. Hamilton Comment
  CAS-BOT-BC287709  Coreopsis bigelovii John Thomas Howell 1930-5-13 5044 Kern Kern Canyon, 7 miles above Kernville 844 Comment
  CAS-BOT-BC101580  Corethrogyne filaginifolia John Thomas Howell; Gordon H. True 1967-9-20 43921 Tulare 3.3 miles from Fish Creek bridge on road to Kennedy Meadows, Kern Plateau 2225 Comment
  CAS-BOT-BC101581  Corethrogyne filaginifolia John Thomas Howell; Gordon H. True 1969-9-30 46346 Tulare Cherry Hill Road 1 mile east of Kern Canyon highway, Brush Creek Canyon. Kern Plateau 1219 Comment
  CAS-BOT-BC105732  Corethrogyne filaginifolia John Thomas Howell 1970-11-8 47529 Kern Desiccated bed of Lake Isabella 6 miles from South Fork Kern River bridge on road from Weldon to Kernville-Sierra Nevada 792 Comment
  SDSU4706  Corethrogyne filaginifolia D. F. Howe 1965-7-30 4093 Monterey 16.4 miles south of Monterey on #1. Comment
  GH387194  Corethrogyne filaginifolia var. pinetorum J. T. Howell 1970-9-25 47438 Unknown near stream below San Antonio Ski Hut, San Gabriel Mts. 2286 Comment
  CAS-BOT-BC212163  Cornus sericea John Thomas Howell 1940-7-28 15602 Fresno Between Zumwalt Meadows and Bubbs Creek, Kings River Canyon 1524 Comment
  A385535  Cornus stolonifera J. T. Howell 1940-7-28 15602 Unknown Between Zumwalt Meadows and Bubbs Creek, Kings River Canyon Comment
  CAS-BOT-BC291352  Cotula coronopifolia John Thomas Howell 1965-4-27 41259 Merced 5 miles east of Los Banos 30 Comment
  CAS-BOT-BC290334  Crepis John Thomas Howell 1954-6-6 29962 Tuolumne Twain Harte 1127 Comment
  CAS-BOT-BC290494  Crepis acuminata John Thomas Howell 1950-7-16 26952 Tulare North of Bakeoven Meadows, South Fork of Kern River 2499 Comment
  SDSU3866  Crepis intermedia D. F. Howe 1962-5-19 3243 Lake 4 miles west of Colusa - Lake Co. line. 610 Comment
  CAS-BOT-BC190103  Crypsis schoenoides John Thomas Howell 1957-9-16 32979 Sonoma Russian River bottom, near Guerneville. Comment
  CAS-BOT-BC189288  Cryptantha John Thomas Howell 1976-5-19 s.n. Kern Between Isabella Dam and Keysville, Greenhorn Mountains 822 Comment
  CAS-BOT-BC189448  Cryptantha circumscissa John Thomas Howell 1962-5-22 37347 Tulare Johnsondale 1423 Comment
  RSA0001761  Cryptantha circumscissa var. rosulata J. T. Howell 1949-8-12 26227 Inyo Upper Cottonwood Lakes. Sierra Nevada. 3415 Comment
  SD113305  Cryptantha clevelandii var. florosa Darley F. Howe 1952-6-15 2228 Los Angeles Los Angeles, Santa Monica Mountains, Mulholland Drive, ca. 9 miles from ocean Comment
  SD63843  Cryptantha cycloptera f. cycloptera Darley F. Howe 1966-4-7 San Bernardino Sheephole Mountain 760 Comment
  CAS-BOT-BC218781  Cryptantha glomeriflora John Thomas Howell 1950-7-24 27301 Tulare Monache Creek, South Fork 2987 Comment
  CAS-BOT-BC218789  Cryptantha glomeriflora John Thomas Howell 1949-7-26 25812 Tulare Golden Trout Creek 2941 Comment
  CAS-BOT-BC218816  Cryptantha glomeriflora John Thomas Howell; Gordon H. True 1967-7-3 42890 Tulare Kern Plateau, about 1.5 miles northeast of Long Valley on road to Chimney Meadow, in metamorphic area 2103 Comment
  RSA95530  Cryptantha glomeriflora J. T. Howell 1951-7-18 s.n. Tulare Franklin Pass Trail. 3201 Comment
  CAS-BOT-BC228628  Cryptantha humilis John Thomas Howell 1947-8-11 24028 Inyo South end of Coyote Ridge 3657 Comment
  CAS-BOT-BC215274  Cryptantha incana John Thomas Howell; Gordon H. True 1970-7-29 47090 Tulare On road from Cannell Meadow to Pine Flat. Kern Plateau 2286 Comment
  CAS-BOT-BC54150  Cryptantha intermedia John Thomas Howell 1934-7-1 12334 Modoc Duncan Horse Camp. 1355 Comment
  UC909664  Cryptantha muricata John Thomas Howell 1950-7-26 27339 Tulare between Monanche and Summit meadows; Sierra Nevada 2590 Comment
  RSA0079256  Cryptantha muricata var. jonesii J. T. Howell 1960-6-6 35339 Fresno Sierra Nevada: Copper Creek Trail, Kings Canyon. 1677 Comment
  CAS-BOT-BC54116  Cryptantha simulans John Thomas Howell 1934-6-11 11982 Modoc Parker Creek, Warner Mountains 1584 Comment
  SDSU5488  Cryptantha simulans D. F. Howe 1947-5-30 1715 Kern Greenhorn Mts. 2073 Comment
  SD43579  Cryptogramma acrostichoides Darley F. Howe 1948-8-14 San Bernardino San Gorgonio, San Bernardino Mountains 2895 Comment
  A356048  Cupressus macnabiana J. T. Howell 1939-5-7 14650 Unknown Lake Co., on road from Lower Lake to Knoxville near Napa Co. line Comment
  CAS-BOT-BC85477  Cupressus sargentii John Thomas Howell 1956-1-1 30916 Marin On serpentine above Bootjack, Mt. Tamalpais Comment
  CAS-BOT-BC224559  Cuscuta californica John Thomas Howell 1969-8-25 45912 Tulare Mineral King 2377 Comment
  CAS-BOT-BC224568  Cuscuta californica John Thomas Howell 1942-7-27 17287 Tulare Deer Creek between Timber Gap and Cliff Creek Comment
  CAS-BOT-BC224397  Cuscuta californica John Thomas Howell 1925-5-9 1010 Merced 3 miles sw. of Merced Comment
  LA39963  Cuscuta subinclusa John Thomas Howell; 1939-9-3 15355 Marin at mouth of San Antonio Creek Comment
  RSA128966  Cycladenia humilis var. venusta J. T. Howell 1955-7-7 s.n. Monterey North slope of summit of Junipero Serra Peak. Santa Lucia Mts. 1768 Comment
  SDSU84  Cylindropuntia acanthocarpa var. acanthocarpa D. F. Howe 1968-4-23 4498 San Bernardino 23 miles south of Needles. 30 Comment
  SD113449  Cylindropuntia californica var. parkeri Darley F. Howe 1939-5-9 831 San Diego Foothills, east of Banner. (IPB 7/07) Comment
  CAS-BOT-BC56733  Cylindropuntia prolifera John Thomas Howell 1932-3-12 8206 Ventura Field redacted by CAS, contact the data manager for more information Comment
  SD112973  Cymopterus aboriginum Darley F. Howe 1971-6-23 4721 Inyo 12.5 miles southeast of entrance to Inyo National Forest, east of Big Pine 2195 Comment
  SD53210  Cynoglossum grande Darley F. Howe 1962-5-16 3267 Tuolumne 5.4 miles east of Sonora on Highway 108. 1095 Comment
  SD62132  Cynosurus echinatus D. F. Howe 1965-5-22 4071 El Dorado 10.3 miles south of Placerville 487 Comment
  CAS-BOT-BC114210  Cyperus strigosus John Thomas Howell 1959-9-20 34636 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC70670  Cystopteris fragilis John Thomas Howell; Gordon H. True 1969-6-23 45831 Plumas Middle Fork of Feather River at Nelson Point 1249 Comment
  CAS-BOT-BC70690  Cystopteris fragilis John Thomas Howell 1947-7-25 23650 San Bernardino Whitewater cirque, Mt. San Gorgonio, San Bernardino Mts. 3352 Comment
  CAS-BOT-BC186621  Danthonia californica John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-23 54162 Plumas 3.25 miles west of Round Valley Reservoir dam 1633 Comment
  CAS-BOT-BC186629  Danthonia californica John Thomas Howell 1956-6-10 31547 San Francisco North slope of Bayview Hills, San Francisco Comment
  CAS-BOT-BC186630  Danthonia californica John Thomas Howell 1956-6-10 31546 San Francisco North slope of Bayview Hills, San Francisco Comment
  CAS-BOT-BC186631  Danthonia californica John Thomas Howell 1957-5-17 s.n. San Francisco Bayview Hills Comment
  CAS-BOT-BC186635  Danthonia californica John Thomas Howell 1957-5-28 32520 San Francisco Nw. side of Lone Mt. Comment
  UCD60682  Danthonia californica var. americana John Thomas Howell 1955-6-13 30392 Trinity Hayfork. 716 Comment
  CAS-BOT-BC194363  Danthonia intermedia John Thomas Howell 1944-8-5 19938 Tuolumne Tuolumne Meadows Comment
  SD81246  Dasyochloa pulchella D. F. Howe 1971-9-28 San Bernardino New York Mts. 1676 Comment
  RSA523  Daucus carota J. T. Howell 1927-6-30 252 Orange Bryant Ranch near Long Beach. 15 Comment
  CAS-BOT-BC294096  Deinandra kelloggii John Thomas Howell 1938-5-28 13824 Merced Los Banos Hills Comment
  SEINET7838971 Image available Deinandra pallida J. T. Howell 1958-5-21 33039 Kern 5 miles east of Bakersfield 213 Comment
  CAS-BOT-BC292048  Deinandra pentactis John Thomas Howell 1929-10-12 4468 San Luis Obispo On Atascadero Creek, 5.2 miles w. of Atascadero Comment
  CAS-BOT-BC9020  Delphinium decorum John Thomas Howell 1931-4-18 6416 Sonoma Larkspur Rock near Bodega Bay Comment
  SD60953  Delphinium gracilentum Darley F. Howe 1964-7-19 3838 Fresno Badger Flat east of Huntington Lake, Sierra Nat. Forest 2438 Comment
  CAS-BOT-BC10179  Delphinium hesperium John Thomas Howell 1946-5-19 21928 Marin Saddle between Big and Little Carson Canyons Comment
  CAS-BOT-BC116044  Delphinium nuttallianum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49180 Lassen Sierra Nevada, Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC116097  Delphinium nuttallianum J. T. Howell; Gordon H. True 1967-7-11 43325 Plumas Coniferous forest about 3 miles southeast of Mt. Hough 1706 Comment
  CAS-BOT-BC121743  Delphinium patens subsp. patens John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54264 Plumas About 1.4 mi. southeast of summit of Mt. Hough on road to Quincy 1950 Comment
  CAS-BOT-BC118095  Delphinium polycladon John Thomas Howell 1946-7-14 22257 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC192370  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1941-8-1 16657 Madera Near Garnet Lake 2956 Comment
  CAS-BOT-BC192371  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1941-8-6 16795 Madera Shadow Creek below Lake Ediza Comment
  CAS-BOT-BC192474  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1955-7-17 30707 Trinity Southwest of Peanut 762 Comment
  POM203128  Deschampsia cespitosa subsp. cespitosa J. T. Howell 1934-7-9 12517 Lassen Bridges Creek Spring. Comment
  CAS-BOT-BC192692  Deschampsia danthonioides John Thomas Howell 1958-7-30 34128 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC201686  Deschampsia danthonioides John Thomas Howell 1962-5-22 37364 Tulare Johnsondale 1423 Comment
  CAS-BOT-BC201690  Deschampsia danthonioides John Thomas Howell; Gordon H. True 1969-9-29 46307 Tulare Dry Lake about 5 miles south of Big Meadow on Cherry Hill Road, Kern Plateau 2316 Comment
  CAS-BOT-BC201691  Deschampsia danthonioides John Thomas Howell; Gordon H. True 1967-7-3 42841 Tulare Rockhouse Meadow, Kern Plateau 1737 Comment
  SD29595  Deschampsia danthonioides Darley F. Howe 1941-7-7 1211 San Diego Laguna Mts. Comment
  UC1106223  Deschampsia danthonioides John Thomas Howell 1944-5-21 19498 Marin Lagunitas Meadows Mt. Tamalpais; , Lagunitas Meadows Comment
  UCD63000  Deschampsia danthonioides John Thomas Howell 1962-7-10 38501 Kern Shirley Meadows, Greenhorn Mountains. 2011 Comment
  UC1177110  Deschampsia elongata John Thomas Howell 1946-5-19 21920 Marin Carson Ridge Comment
  CAS-BOT-BC42954  Descurainia incana John Thomas Howell; Gordon H. True 1966-7-11 41685 Tulare Sierra Nevada. Kern Plateau. Poison Meadow. 2286 Comment
  CAS-BOT-BC43030  Descurainia incisa subsp. incisa John Thomas Howell 1943-7-22 18704 Placer Summit Valley. Comment
  CAS-BOT-BC43047  Descurainia incisa subsp. incisa John Thomas Howell 1951-7-17 27818 Tulare Mineral King and Vicinity. White Chief Trail. 2743 Comment
  CAS-BOT-BC43325  Descurainia pinnata subsp. glabra John Thomas Howell 1960-3-26 35188 Kern Sierra Nevada. Kernville. Comment
  SD44849 Image available Descurainia sophia Darley F. Howe 1952-5-21 2207 San Diego Chula Vista. Comment
  CDA1964  Desmazeria rigida J. T. Howell 1943-6-13 18225 Marin Sausalito Comment
  UCD63903  Desmazeria rigida John Thomas Howell 1943-6-13 18225 Marin Sausalito. 60 Comment
  CAS-BOT-BC402240  Dicentra chrysantha John Thomas Howell; Gordon H. True 1971-6-15 47757 Kern Flying Dutchman Creek canyon on Havilah-Mt. Breckenridge road 1188 Comment
  CAS-BOT-BC208934  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1950-5-20 26320 Tulare Three Rivers 304 Comment
  CAS-BOT-BC500091  Dichelostemma capitatum John Thomas Howell 1944-7-17 19831 Contra Costa Canyon of Snow Basin Creek Comment
  RSA122  Dichelostemma capitatum subsp. capitatum J. T. Howell 1928-2-7 812 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC483262  Dichelostemma capitatum subsp. pauciflorum John Thomas Howell 1962-6-16 37549 Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC242120  Dichelostemma multiflorum John Thomas Howell 1934-6-11 11945 Modoc Parker Creek. 1584 Comment
  CAS-BOT-BC292270  Dieteria canescens John Thomas Howell 1972-9-15 49039 Nevada Donner Lake vista point on Highway 80 1859 Comment
  CAS-BOT-BC292271  Dieteria canescens John Thomas Howell 1972-9-15 49038 Nevada Donner Lake vista point on Highway 80 1859 Comment
  CAS-BOT-BC290956  Dieteria canescens var. shastensis John Thomas Howell 1925-7-1 1291 El Dorado Highway above Armstrong's, Emerald Bay, Lake Tahoe Comment
  CAS-BOT-BC291023  Dieteria canescens var. shastensis John Thomas Howell 1934-7-4 12391 Siskiyou Se. corner of Siskiyou Co. Comment
  UCD63943  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC209004  Digitaria sanguinalis John Thomas Howell 1989-10-16 s.n. Marin Terra Linda, Freitas Park Comment
  CAS-BOT-BC153617  Diplacus John Thomas Howell 1967-6-23 42726 Plumas 3.5 miles east of Rich Bar, East Branch Feather River Comment
  SD114422  Diplacus bigelovii var. cuspidatus Darley F. Howe 1945-10-22 1363 Inyo Silver Canyon, White Mts Comment
  CAS-BOT-BC150262  Diplacus calycinus John Thomas Howell 1976-5-19 51759 Kern Between Isabella Dam and Keysville. Greenhorn Mountains 822 Comment
  CAS-BOT-BC153510  Diplacus leptaleus John Thomas Howell 1963-7-12 39841 El Dorado Meyers 1935 Comment
  CAS-BOT-BC151416  Diplacus mephiticus John Thomas Howell 1950-7-18 27060 Tulare Big dune, Bakeoven Meadows, South Fork of Kern River - Sierra Nevada 2468 Comment
  SD114411  Diplacus torreyi Darley F. Howe 1971-6-29 4747 Placer 1.4 miles east of Forest Hill 1096 Comment
  CAS-BOT-BC208680  Distichlis spicata John Thomas Howell 1958-5-29 33616 Inyo Bishop 1264 Comment
  CAS-BOT-BC208681  Distichlis spicata John Thomas Howell 1958-5-21 33062 Kern Kernville - Sierra Nevada 807 Comment
  CAS-BOT-BC208685  Distichlis spicata John Thomas Howell; Gordon H. True 1969-5-15 45782 Kern Kern river Canyon 9 miles from mouth of canyon - Sierra Nevada 548 Comment
  OBI22326  Distichlis spicata John Thomas Howell 1948-6-15 24375 San Luis Obispo San Juan River Valley 366 Comment
  SD81205  Ditaxis neomexicana Darley F. Howe 1971-9-26 San Bernardino Providence Mountains 910 Comment
  SD113133  Dithyrea californica Darley F. Howe 1937-4-10 473 San Diego Borrego Valley Comment
  HSC17876  Dodecatheon hendersonii J. Wendell Howe 1932-4-10 Humboldt Lord Ellis Rd. E of Korbel (20 mi. E) Comment
  UC765462  Downingia bella John Thomas Howell 1929-4-18 4168 Merced Merced Comment
  SDSU124  Downingia cuspidata D. F Howe 1962-5-14 3227 Fresno 7.41 miles east of Clovis. 183 Comment
  GH33211  Downingia mirabilis J. T. Howell 1929-4-25 4200 Unknown 5 miles northeast of Merced Comment
  POM204468  Downingia pulchella J. T. Howell 1933-4-22 11029 San Benito 7 miles NW of Hollister. Comment
  CAS-BOT-BC41970  Draba albertina John Thomas Howell 1948-7-24 24970 Fresno Bullfrog Lake. 3240 Comment
  CAS-BOT-BC41990  Draba albertina John Thomas Howell 1946-7-28 22817 Inyo Rock Creek Lake Basin. Gem Lake. 3352 Comment
  CAS-BOT-BC42033  Draba albertina John Thomas Howell 1949-7-19 25500 Tulare Rock Creek. 3200 Comment
  CAS-BOT-BC41832  Draba breweri John Thomas Howell 1947-8-14 24095 Inyo Inconsolable Range above Big Pine Lakes. 3779 Comment
  RSA33230  Draba corrugata D. F. Howe 1946-8-3 s.n. San Bernardino Sugarloaf trail from Rathbone Creek. Comment
  SDSU2379  Draba corrugata D. F. Howe 1946-8-3 1455 San Bernardino Trail to Sugarloaf Peak from Rathbone Creek, San Bernadino Mts. 2743 Comment
Read comments
Aug 5 2009
  CAS-BOT-BC41375  Draba verna John Thomas Howell 1972-4-25 48703 Mariposa Sierra Nevada. Yosemite Valley. Near Camp Curry. 1219 Comment
  CAS-BOT-BC41395  Draba verna John Thomas Howell 1963-6-4 39402 Plumas Sierra Valley south of Beckwourth. 1463 Comment
  CAS-BOT-BC41400  Draba verna John Thomas Howell 1976-4-2 51574 Plumas Sierra Nevada. 2 miles northwest of Spring Garden. 1173 Comment
  CAS-BOT-BC159713  Drymocallis glandulosa John Thomas Howell; Gordon H. True 1971-7-13 48348 Kern Pine Flat - Kern Plateau, Sierra Nevada 2194 Comment
  CAS-BOT-BC527338  Drymocallis glandulosa var. reflexa John Thomas Howell 1977-6-22 52405 Lassen West of Susanville near the confluence of Willard Creek and Susan River, Sierra Nevada 1432 Comment
  CAS-BOT-BC534972  Drymocallis glandulosa var. reflexa John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-23 54156 Plumas Sierra Nevada, 3.25 miles W of Round Valley Reservoir dam 1633 Comment
  CAS-BOT-BC163124  Drymocallis lactea var. lactea John Thomas Howell 1937-7-21 13243 Trinity Big Flat Comment
  CAS-BOT-BC410849  Dudleya caespitosa John Thomas Howell 1933-8-19 11601 Monterey Pt. Lobos Comment
  SD114465  Dudleya caespitosa Darley F. Howe 1961-7-23 3126 San Luis Obispo Ocean bluff, 12.7 miles south of San Luis Obispo/Monterey County line. Comment
  SD114483  Dudleya viscida Darley F. Howe 1954-6-27 2417 San Diego Near mouth of San Luis Rey River on north bank just east of bridge north of Oceanside. Comment
Read comments
Jun 15 2015
  SD112661  Dysphania multifida Darley F. Howe 1942-6-18 1243 San Diego Comment
  SD112650  Dysphania pumilio D. F. Howe 1962-8-18 3462 Fresno Shaver Lake, Sierra National Forest. Comment
  CAS-BOT-BC197056  Echinochloa crus-galli John Thomas Howell 1954-9-6 30071 Calaveras Altaville Comment
  CAS-BOT-BC208555  Echinochloa crus-galli John Thomas Howell; Walter Knight; Irja Knight 1986-10-9 6283 Sonoma Llano Road between Gravenstein Hwy. and Todd Road near sewage plant. Comment
  UCD61201  Ehrharta erecta John Thomas Howell 1973-1-22 49110 San Francisco At Planetarium entrance to the Academy, Golden Gate Park, San Francisco. Comment
  RSA127379  Eleocharis acicularis var. acicularis J. T. Howell 1946-7-4 22182 Marin East of Aurora School at Sonoma County line Comment
  CAS-BOT-BC113489  Eleocharis bella John Thomas Howell 1943-7-14 18291 Nevada West side of Donner Pass near Norden. 2133 Comment
  CAS-BOT-BC113520  Eleocharis bella John Thomas Howell 1936-8-28 12874 Trinity Forest Glen Comment
  CAS-BOT-BC112786  Eleocharis macrostachya John Thomas Howell 1959-9-20 34659 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC112810  Eleocharis macrostachya John Thomas Howell; Gordon H. True 1971-7-15 48604 Kern Bartolas Spring on North Fork of Bartolas Creek. 2133 Comment
  CAS-BOT-BC112892  Eleocharis macrostachya John Thomas Howell 1963-6-22 39518 Monterey Near summit of Mustang Grade, east of Lorenzo Creek. Comment
  CAS-BOT-BC113137  Eleocharis pachycarpa John Thomas Howell 1954-5-17 29673 El Dorado 3 miles S of Garden Valley Comment
  CAS-BOT-BC112703  Eleocharis parishii John Thomas Howell 1936-8-23 12692 Trinity Near Trinity Center Comment
  CAS-BOT-BC112712  Eleocharis parishii John Thomas Howell; Gordon H. True 1967-5-30 42442 Tulare Slopes west of Lamont Meadow, Kern Plateau. 1706 Comment
  CAS-BOT-BC112056  Eleocharis quinqueflora John Thomas Howell 1943-7-16 18384 Nevada West side of Donner Pass near Norden 2133 Comment
  RSA126460  Elodea canadensis J. T. Howell 1943-9-5 19322 -A Marin Just south of Mill Valley Comment
  CAS-BOT-BC197356  Elymus John Thomas Howell 1964-6-30 40841 San Luis Obispo Cambria Comment
  CAS-BOT-BC203858  Elymus X hansenii John Thomas Howell 1943-5-22 18139 Marin Fairfax hills Comment
  CAS-BOT-BC203860  Elymus X hansenii John Thomas Howell 1941-6-29 16333 Marin Between Rock Spring and Laurel Dell, Mt. Tamalpais Comment
  CAS-BOT-BC203861  Elymus X hansenii John Thomas Howell 1941-5-25 16236 Marin Near Bootjack, Mt. Tamalpais Comment
  CAS-BOT-BC213794  Elymus X hansenii John Thomas Howell 1942-7-24 17112 Tulare Mineral King Comment
  UC1026509  Elymus X saundersii John Thomas Howell 1950-7-24 27331 Tulare e Hessian Meadows; Sierra Nevada 2743 Comment
  UC1106121  Elymus californicus John Thomas Howell 1941-7-6 16356 Marin Mount Tamalpais, Kent Trail Mount Tamalpais; , Kent Trail Comment
  CAS-BOT-BC227356  Elymus elymoides John Thomas Howell 1946-7-16 22421 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC234128  Elymus elymoides John Thomas Howell 1950-7-22 27218 Tulare Above timberline, Olancha Peak, Sierra Nevada 3657 Comment
  RSA299284  Elymus elymoides J. T. Howell 1958-8-12 s.n. Madera Near Isberg Lake. Sierra Nevada 2988 Comment
  CAS-BOT-BC227724  Elymus elymoides John Thomas Howell 1960-7-17 35495 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  CAS-BOT-BC227934  Elymus elymoides John Thomas Howell 1960-8-18 36082 Tehama Lassen Volcanic National Park. Sulphur Works Checking Station 2011 Comment
  UCD61497  Elymus elymoides var. californicus John Thomas Howell 1960-6-6 35344 Fresno Kings Canyon at Copper Creek. 1524 Comment
  RSA127234  Elymus glaucus J. T. Howell 1942-6-21 s.n. Marin Carson Ridge Comment
  SD112843  Elymus glaucus Darley F. Howe 1941-7-7 1210 San Diego Laguna Mts. Comment
  UCD61861  Elymus glaucus John Thomas Howell 1960-7-18 35608 Plumas Lassen Volcanic National Park. Drakesbad. 1676 Comment
  CAS-BOT-BC203518  Elymus glaucus subsp. glaucus John Thomas Howell 1944-6-4 19543 Marin Inverness Ridge west of Inverness Comment
  CAS-BOT-BC203527  Elymus glaucus subsp. glaucus John Thomas Howell 1944-5-21 19490 Marin West end of Phoenix Lake, Mt. Tamalpais Comment
  CAS-BOT-BC203807  Elymus glaucus subsp. virescens John Thomas Howell 1943-7-4 18249 Marin Ledum Swamp on road to Point Reyes Comment
  CAS-BOT-BC234138  Elymus multisetus John Thomas Howell 1927-6-8 2453 Orange Southern Puente Hills in the Santa Ana Canyon 152 Comment
  UCD62442  Elymus multisetus John Thomas Howell 1962-6-15 37528 Butte Magalia. 731 Comment
  SD64332  Elymus ponticus D. F. Howe 1966-8-25 4299 Modoc Fandango Pass, Warners Mountains 1858 Comment
  CAS-BOT-BC213822  Elymus repens John Thomas Howell 1957-9-1 32940 San Francisco California St., near 16th Ave. - San Francisco Comment
  RSA54075  Elymus sierrae J. T. Howell 1946-8-30 22922 El Dorado Upper Angora Lake 2287 Comment
  GH365146  Elymus trachycaulus J. T. Howell 1943-8-3 18968 Unknown Plaskett Meadows 1828 Comment
  CAS-BOT-BC213513  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1969-8-25 45917 Tulare Mineral King - Sierra Nevada 2377 Comment
  UCD62669  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1942-7-26 17237 Tulare Mineral King. Comment
  CAS-BOT-BC204316  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1942-7-19 17042 Contra Costa Near Deer Flat, Mt. Diablo Comment
  UCR244851  Elymus triticoides D. F. Howe 1978-6-24 s.n. Alpine Sierra Nevada Mtns., near Hwy 89 at Markleeville 1646 Comment
  SEINET10561204  Elymus triticoides subsp. multiflorus Howell 1973-6-28 Howell 49522 Lassen Elysian Valley, west of Janesville. 1326 Comment
  RSA479476  Empetrum nigrum Thos. Howell 1892-04 s.n. Del Norte Crescent City. Comment
  CAS-BOT-BC131095  Encelia actoni John Thomas Howell 1958-5-25 33359 Inyo Carroll Creek 1676 Comment
  CAS-BOT-BC81610  Ephedra californica John Thomas Howell 1977-3-11 52330 San Diego bank bordering San Felipe Wash sw. of Yaqui Pass Comment
  CAS-BOT-BC81620  Ephedra californica John Thomas Howell 1927-11-26 3247 San Diego San Felipe Wash, half way between Borrego Valley and Yaqui Well, w. Colorado Desert Comment
  UC421705  Ephedra californica John Thomas Howell 1928-3-11 3409 San Bernardino e end of Morongo Valley 914 Comment
  CAS-BOT-BC81764  Ephedra nevadensis John Thomas Howell 1958-5-28 33558 Inyo Bishop Creek 1950 Comment
  CAS-BOT-BC81986  Ephedra viridis John Thomas Howell 1950-7-28 27421 Mono [Leevining] Lee Vining Canyon 2255 Comment
  CAS-BOT-BC82026  Ephedra viridis John Thomas Howell; Gordon H. True 1969-5-14 45739 Tulare Marble ridge just north of Cherry Hill Road at start of Rincon Trail, Brush Creek Canyon, Kern Plateau 1463 Comment
  CAS-BOT-BC165923  Epilobium John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-22 54097 Plumas 10.6 miles northeast of La Porte on road to Quincy 1889 Comment
  POM259364  Epilobium brachycarpum J. T. Howell 1939-8-9 15237 Siskiyou Shackleford Creek Trail, Marble Mts. Comment
  CAS-BOT-BC166329  Epilobium canum subsp. canum John Thomas Howell 1930-10-24 5636 Monterey 17.2 miles east of The Indians, Santa Lucia Mts. Comment
  CAS-BOT-BC166330  Epilobium canum subsp. canum John Thomas Howell 1930-10-25 5667 Monterey On flood-bed of Arroyo Seco River, Santa Lucia Mts. Comment
  RSA515526  Epilobium foliosum J. T. Howell, H. Keith Wagnon 1980-5-28 53698 Plumas Sierra Nevada: Serpentine Canyon about 3 miles east of Rich Bar, East Branch North Fork Feather River. 854 Comment
  CAS-BOT-BC57080  Equisetum arvense John Thomas Howell; Gordon H. True 1967-7-3 42856 Tulare Rockhouse Meadow, Kern Plateau 1706 Comment
  CAS-BOT-BC57830  Equisetum hyemale subsp. affine John Thomas Howell 1959-9-24 34919 Plumas Indian Creek Canyon near Indian Falls. 1036 Comment
  SD129857  Equisetum hyemale subsp. affine Melanie Howe, David K. Faulkner 1990-6-13 93 Inyo Surprise Canyon 900 Comment
  SBBG44569  Eragrostis mexicana J. T. Howell 1957-8-5 San Francisco Golden Gate Park Comment
  RSA215882  Eragrostis mexicana subsp. virescens J. T. Howell 1957-8-5 32863 San Francisco in Strybing Arboretum, Golden Gate Park Comment
  RSA299619  Eragrostis mexicana subsp. virescens J. T. Howell 1977-8-11 52669 Plumas Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir 1677 Comment
  CAS-BOT-BC284060  Eragrostis pectinacea var. pectinacea John Thomas Howell 1973-10-31 50271 Madera Madera 83 Comment
  CAS-BOT-BC284065  Eragrostis pectinacea var. pectinacea John Thomas Howell 1973-7-25 49967 Merced Near Gustine 30 Comment
  CAS-BOT-BC209615  Eremalche parryi John Thomas Howell 1963-5-7 39229 Monterey On San Lorenzo Creek, 6 miles northeast of King City 182 Comment
  SD62094  Eremalche parryi subsp. kernensis Darley F. Howe 1965-3-27 Kern 7.6 miles from Mocal Road on Crocker Springs Road. Comment
  CAS-BOT-BC174183  Eremogone congesta var. charlestonensis John Thomas Howell 1977-6-22 52401 Lassen North end of Eagle Lake 1584 Comment
  CAS-BOT-BC168337  Eremogone congesta var. congesta John Thomas Howell 1942-7-29 17364 Tulare Little Five Lakes Basin Comment
  CAS-BOT-BC181654  Eremogone kingii var. glabrescens John Thomas Howell 1944-8-10 20296 Mono Dana Plateau Comment
  CAS-BOT-BC162949  Eremothera boothii subsp. desertorum John Thomas Howell 1928-6-17 4002 B Inyo Panamint City, Surprise Canyon, Panamint Mts. Comment
  UC908106  Eriastrum eremicum subsp. eremicum John Thomas Howell 1927-8-1 2890 San Bernardino upper part of Morongo Valley Mojave(?) Desert (e end) Comment
  SDSU6348  Ericameria albida D. F. Howe 1971-9-29 4781 Inyo 5 miles east of Death Valley Junction. 610 Comment
Read comments
Oct 31 2011
  CAS-BOT-BC286740  Ericameria cuneata var. cuneata John Thomas Howell 1962-9-21 38676 Kern Kern River Canyon 304 Comment
  SDSU3901  Ericameria ericoides D. F. Howe 1977-10-6 5017 Santa Barbara 8 miles north of Lompoc. Comment
  JEPS53987  Ericameria nauseosa var. mohavensis John Thomas Howell 1967-11-6 44178 Kern 4.5 mi w of Wofford Heights; Sierra Nevada, Greenhorn Mountains 1219 Comment
  JEPS53990  Ericameria nauseosa var. mohavensis John Thomas Howell 1967-11-5 44168 Kern about 2.5 mi above Kernville; Sierra Nevada, Kern River Canyon 838 Comment
  CAS-BOT-BC294156  Ericameria nauseosa var. speciosa John Thomas Howell 1963-8-21 40219 Inyo Whitney Portal road 2255 Comment
  SBBG50454  Ericameria nauseosa var. speciosa J. T. Howell 1974-9-20 50902 Plumas near Spring Garden 1158 Comment
  SEINET8079195 Image available Ericameria nauseosa var. speciosa J. T. Howell 1959-9-25 s.n. Plumas Summit of Beckwourth Pass 1589 Comment
  SD112578  Ericameria parishii var. parishii Darley F. Howe 1938-10-4 760 San Diego Laguna Junction. Comment
  CAS-BOT-BC293114  Ericameria parryi var. vulcanica John Thomas Howell; Gordon H. True 1969-10-1 46425 Tulare Brush Creek Overlook, about 2 miles north of Poison Meadow, Kern Plateau 2468 Comment
  CAS-BOT-BC293122  Ericameria pinifolia John Thomas Howell 1927-11-13 3205 Los Angeles 3/4 mile south of Elizabeth Lake, Liebre Mts. 1005 Comment
  SD28291  Ericameria teretifolia Darley F. Howe 1940-11-2 1045 Inyo Cottonwood Creek. Comment
  CAS-BOT-BC293393  Erigeron algidus John Thomas Howell 1938-8-11 14537 Tuolumne Mt. Dana 3657 Comment
  CAS-BOT-BC294595  Erigeron breweri var. breweri John Thomas Howell 1958-7-22 33728 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC296015  Erigeron divergens John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-23 54168 Plumas 3.25 miles west of Round Valley Reservoir Dam, Sierra Nevada 1633 Comment
  CAS-BOT-BC296844  Erigeron divergens John Thomas Howell 1930-5-13 5036 Kern Kern Canyon 7 miles above Kernville 844 Comment
  CAS-BOT-BC298570  Erigeron divergens John Thomas Howell 1934-7-4 12414 Shasta 3 miles sw. of Fall River Mills Comment
  SD42626  Erigeron divergens Darley F. Howe 1947-6-21 San Bernardino Sugarloaf Post Office. Comment
  CAS-BOT-BC300419  Erigeron eatonii var. sonnei John Thomas Howell 1977-6-21 52393 Plumas Near Almanor P. O., Lake Almanor 1371 Comment
  CAS-BOT-BC49630  Erigeron filifolius John Thomas Howell 1934-6-12 12014 Modoc Between Davis Creek and Plum Valley. Comment
  CAS-BOT-BC308822  Erigeron glacialis var. hirsutus John Thomas Howell; Gordon H. True 1971-7-14 48505 Tulare Round Meadow about 3 miles northwest of Sirretta Peak, Kern Plateau, Sierra Nevada 2621 Comment
  SD56824  Erigeron glaucus Darley F. Howe 1963-5-21 Monterey Monterey Peninsula Comment
  CAS-BOT-BC295227  Erigeron inornatus John Thomas Howell 1960-7-19 35673 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  SD112285  Erigeron lassenianus Darley F. Howe 1958-7-29 2662 Mono 8 miles north of Bridgeport on Highway 395. Comment
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Jul 16 2014
  CAS-BOT-BC295326  Erigeron lonchophyllus John Thomas Howell; Gordon H. True 1969-9-30 46404 Tulare Pipe Spring on Cherry Hill Road, west side of Big Meadow, Kern Plateau 2407 Comment
  CAS-BOT-BC300167  Erigeron pygmaeus John Thomas Howell 1947-8-11 23986 Inyo Inconsolable Range 3810 Comment
  RSA210517  Eriochloa acuminata J. T. Howell, Gordon H. True 1967-9-21 43985 Tulare About 4.5 miles ENE of Pixley. 84 Comment
  CAS-BOT-BC278496  Eriochloa contracta John Thomas Howell 1973-10-31 50267 Merced Los Banos Comment
  CAS-BOT-BC216089  Eriodictyon californicum John Thomas Howell 1946-5-12 21808 Marin Carson Ridge Comment
  RSA8478  Eriodictyon tomentosum J. T. Howell 1933-8-17 11541 San Benito 4 miles N of Pinnacles Comment
  SDSU6042  Eriodictyon trichocalyx D. F Howe 1947-5-5 1530 Los Angeles Pallet Creek, North side of San Gabriel Mts. Comment
  CAS-BOT-BC248485  Eriogonum angulosum John Thomas Howell 1953-6-14 29066 Monterey Hastings Reservation, Santa Lucia Mts. Comment
  CAS-BOT-BC248521  Eriogonum angulosum John Thomas Howell 1933-8-18 11588 Monterey 6 miles west of Jamesburg, Santa Lucia Mts. Comment
  CAS-BOT-BC248531  Eriogonum angulosum John Thomas Howell 1933-4-22 11042 San Benito 1.5 miles s. of Tres Pinos Comment
  CAS-BOT-BC248535  Eriogonum angulosum John Thomas Howell 1937-5-20 12973 San Benito 8 miles east of Paicines Comment
  CAS-BOT-BC248525  Eriogonum angulosum John Thomas Howell 1933-8-16 11520 San Benito 1 mile n. of Paicines Comment
  SD56742  Eriogonum angulosum Darley F. Howe 1963-7-1 3572 San Benito 10 mi. so. of Hollister on #25 152 Comment
  CAS-BOT-BC248649  Eriogonum apricum John Thomas Howell 1954-9-5 30033 Amador Unspecified Comment
  SEINET10623779  Eriogonum apricum John Thomas Howell 1954-1 Amador Comment
  CAS-BOT-BC248754  Eriogonum argillosum John Thomas Howell 1937-5-20 12972 San Benito 8 miles east of Paicines Comment
  RSA0004938  Eriogonum argillosum J. T. Howell 1931-3-23 5999 Monterey Poncho Rico Canyon Comment
  RSA208  Eriogonum baileyi var. baileyi J. T. Howell 1927-7-9 289 San Bernardino Deadman's Point, Mojave Desert. 915 Comment
  CAS-BOT-BC244042  Eriogonum baileyi var. praebens John Thomas Howell 1963-8-20 40189 Inyo Whitney Portal, Sierra Nevada 2438 Comment
  CAS-BOT-BC241718  Eriogonum brachyanthum John Thomas Howell 1933-6-29 11399 San Bernardino Victorville Comment
  UCD99720  Eriogonum brachyanthum John Thomas Howell 1963-8-21 40243 Inyo Bishop Creek. 1950 Comment
  RSA766404  Eriogonum brachypodum J. T. Howell 1927-11-12 3191 Kern Red Rock Canyon. 762 Comment
  CAS-BOT-BC242694  Eriogonum covilleanum John Thomas Howell 1963-8-7 40093 Monterey Mustang Grade between Mustang Summit and Priest Valley Comment
  RSA128973  Eriogonum deflexum var. baratum J. T. Howell 1957-6-24 s.n. Kern 4 miles north of Red rock Canyon 1006 Comment
  NY762319  Eriogonum deflexum var. nevadense J. T. Howell 1981-8-13 54580 Mono Just north of Old Sherwin Hill Summit on Old Sherwin Grade Road 1950.7 Comment
  POM248707  Eriogonum esmeraldense var. esmeraldense J. T. Howell 1938-8-7 14348 Mono Near Little Round Valley. 2134 Comment
  CAS-BOT-BC253216  Eriogonum fasciculatum var. fasciculatum John Thomas Howell 1927-7-24 2835 Orange Near mouth of Claymine Canyon, Santa Ana Canyon 152 Comment
  CAS-BOT-BC250036  Eriogonum fasciculatum var. polifolium John Thomas Howell 1938-5-28 13832 Merced Los Banos Hills Comment
  CAS-BOT-BC253376  Eriogonum fasciculatum var. polifolium John Thomas Howell 1927-8-1 2901 San Bernardino Short distance east of Morongo Valley on road to Warren's Well, s. Mojave Desert 914 Comment
  CAS-BOT-BC250362  Eriogonum gossypinum John Thomas Howell 1958-5-21 33033 Kern 7 miles east of Bakersfield 213 Comment
  RSA137134  Eriogonum gossypinum J. T. Howell 1957-6-25 s.n. Kern 6 miles NW of Tehachapi. 1098 Comment
  CAS-BOT-BC250535  Eriogonum gracile John Thomas Howell 1927-8-17 3003 San Luis Obispo 4 miles south of Templeton 243 Comment
  SD114055  Eriogonum gracile Darley F. Howe 1950-10-1 2044 San Diego Box Canyon Comment
  CAS-BOT-BC250384  Eriogonum gracile John Thomas Howell 1929-7-20 4330 Contra Costa 2 miles s. of Oakley Comment
  UC517520  Eriogonum gracillimum John Thomas Howell 1931-6-6 6674 Kern Bakersfield Comment
  SDSU6553  Eriogonum hirtellum D. F. Howe 1962-8-4 3385 Siskiyou Baldy Mountain. 1433 Comment
  CAS-BOT-BC261246  Eriogonum hirtiflorum John Thomas Howell 1945-6-21 21200 Lake Bartlett Flat Comment
  UCD100155  Eriogonum hirtiflorum John Thomas Howell 1962-7-8 38275 Kern south side of Black Mt. Greenhorn Range. 1432 Comment
  RSA136757  Eriogonum hirtiflorum J. T. Howell 1955-7-7 30529 Monterey Along fire road between Junipero Serra Peak and head of Santa Lucia Creek, Santa Lucia Mountains. 1311 Comment
  CAS-BOT-BC256813  Eriogonum incanum John Thomas Howell 1946-7-20 22600 Fresno South of Mono Rock 3596 Comment
  CAS-BOT-BC257562  Eriogonum inflatum John Thomas Howell 1938-8-7 14370 Mono Sherwin Grade Comment
  CAS-BOT-BC33970  Eriogonum kearneyi John Thomas Howell 1938-8-7 14362 Mono Summit of Sherwin Grade 1981 Comment
  SD45773  Eriogonum kennedyi var. kennedyi D. F. Howe 1954-5-29 2398 Ventura Ridge bet. Lockwood Valley & Grade v. Comment
  CAS-BOT-BC263687  Eriogonum luteolum var. luteolum John Thomas Howell 1955-7-17 30699 Trinity Slopes southwest of Peanut 762 Comment
  SDSU6757  Eriogonum marifolium D. F. Howe 1962-8-6 3406 Siskiyou Mt Shasta, Shasta National Forest. 2438 Comment
  CAS-BOT-BC263287  Eriogonum marifolium var. marifolium John Thomas Howell 1943-7-21 18649 Placer Donner Pass to Mt. Lincoln Comment
  CAS-BOT-BC263303  Eriogonum marifolium var. marifolium John Thomas Howell; Gordon H. True 1967-7-11 43342 Plumas Summit ridge of Mt. Hough 2194 Comment
  SDSU6781  Eriogonum nidularium D. F. Howe 1971-6-21 4716 Inyo 7 miles south of Big Pine. 1189 Comment
  CAS-BOT-BC264820  Eriogonum nudum var. deductum John Thomas Howell 1951-6-26 27546 Plumas Feather River Canyon, Sierra Nevada 853 Comment
  CAS-BOT-BC261394  Eriogonum nudum var. indictum John Thomas Howell 1931-3-18 5849 Fresno Oil Canyon Comment
  CAS-BOT-BC264830  Eriogonum nudum var. nudum John Thomas Howell 1955-7-16 30658 Trinity Trinity River Canyon, 2 miles east of Junction City 487 Comment
  CAS-BOT-BC264831  Eriogonum nudum var. nudum John Thomas Howell 1955-6-13 30338 Trinity 6 miles southwest of Douglas City 609 Comment
  CAS-BOT-BC264835  Eriogonum nudum var. nudum John Thomas Howell 1937-7-21 13226 Trinity Big Flat Comment
  CAS-BOT-BC266778  Eriogonum nudum var. scapigerum John Thomas Howell 1946-7-29 s.n. Inyo Long Lake, Rock Creek Lake Basin 3230 Comment
  UCD100765  Eriogonum parishii John Thomas Howell 1967-8-9 43625 Tulare 6 miles from Kennedy Meadows on road to Troy Meadow. Kern Plateau. 2286 Comment
  CAS-BOT-BC258423  Eriogonum rosense John Thomas Howell 1947-8-11 24002 Inyo South end of Coyote Ridge 3657 Comment
  CAS-BOT-BC267732  Eriogonum roseum John Thomas Howell 1931-10-11 8140 Mariposa Bootjack Comment
  CAS-BOT-BC268384  Eriogonum roseum John Thomas Howell 1948-6-15 24369 San Luis Obispo Hughes Canyon se. of Shandon 609 Comment
  RSA766268  Eriogonum saxatile J. T. Howell 1930-5-13 5048 Kern Kern Canyon, 7 miles above Kernville 845 Comment
  RSA40026  Eriogonum spergulinum var. reddingianum J. T. Howell 1944-8-7 20050 Tuolumne Toulumme Meadows Comment
  SD26328  Eriogonum spergulinum var. spergulinum Darley F. Howe 1939-7-19 925 Unknown McGurk Valley, Yosemite National Park Comment
  UCD101233  Eriogonum spergulinum var. spergulinum John Thomas Howell; Gordon H. True 1967-8-7 43393 Tulare Kern Plateau; about 3 miles northwest of Beach Meadow. 2529 Comment
  UCD101234  Eriogonum spergulinum var. spergulinum John Thomas Howell; Gordon H. True 1969-10-1 46457 Tulare Kern Plateau; south of Taylor Meadow on road to Taylor Creek crossing. 2225 Comment
  CAS-BOT-BC263651  Eriogonum trichopes John Thomas Howell 1927-11-25 33236 San Diego Central part of Borrego Valley, w. Colorado Desert 182 Comment
  CAS-BOT-BC267505  Eriogonum umbellatum John Thomas Howell 1974-9-20 50898 Plumas About 2 miles from Spring Garden on road to Quincy 1158 Comment
  CAS-BOT-BC267501  Eriogonum umbellatum John Thomas Howell 1951-6-29 27748 Plumas Spring Garden Creek 1158 Comment
  CAS-BOT-BC267835  Eriogonum umbellatum var. bahiiforme John Thomas Howell 1933-8-13 11501 Santa Clara Summit of Mt. Hamilton Comment
  CAS-BOT-BC267847  Eriogonum umbellatum var. chlorothamnus John Thomas Howell 1963-8-21 40226 Inyo Whitney Portal Road, Sierra Nevada 2255 Comment
  CAS-BOT-BC267825  Eriogonum umbellatum var. covillei John Thomas Howell 1949-8-9 26166 Tulare Army Pass 3535 Comment
  CAS-BOT-BC268137  Eriogonum umbellatum var. furcosum John Thomas Howell 1962-5-22 37371 Tulare 1.5 mi. east of Johnsondale 1371 Comment
  HSC17370  Eriogonum umbellatum var. goodmanii J. Wendell Howe 1934-7-21 1314 Humboldt Horse Mtn., Cold Springs Comment
  CAS-BOT-BC265182  Eriogonum umbellatum var. nevadense John Thomas Howell; Gordon H. True 1967-8-9 73643 Tulare Ca. 2.5 miles north of Blackrock Guard Statoin on Monache Jeep Trail, Kern Plateau, Sierra Nevada 2682 Comment
  SD77867  Eriogonum umbellatum var. nevadense D. F. Howe 1970-8-26 Mono 14.7 miles west of Sonora Junction on Sonora Pass Road 2743 Comment
  CAS-BOT-BC262139  Eriogonum umbellatum var. subaridum John Thomas Howell 1963-8-20 40142 Kern Walker Pass 1600 Comment
  UCD101326  Eriogonum ursinum John Thomas Howell 1960-8-19 36179 Shasta Lassen Volcanic National Park; Brokeoff Mt. 2743 Comment
  RSA246  Eriogonum wrightii var. membranaceum J. T. Howell 1927-8-2 556 Riverside Near Strawberry Valley, Mt. San Jacinto. 1677 Comment
  SD51031  Eriophyllum ambiguum var. paleaceum Darley F. Howe 1960-4-28 2916 San Bernardino Kingston Mountains. 915 Comment
  CAS-BOT-BC297870  Eriophyllum confertiflorum John Thomas Howell 1962-5-23 37395 Kern Kern River Canyon near Bodfish 792 Comment
  CAS-BOT-BC297871  Eriophyllum confertiflorum John Thomas Howell 1962-5-21 37125 Kern Kernville 807 Comment
  CAS-BOT-BC297987  Eriophyllum confertiflorum John Thomas Howell 1944-6-25 19665 Marin Between Chinese Camp and McNear's Landing Comment
  CAS-BOT-BC304065  Eriophyllum confertiflorum John Thomas Howell 1956-6-10 31537 San Francisco North slope of Bay View Hills, San Francisco Comment
  CAS-BOT-BC301121  Eriophyllum lanatum var. achilleoides John Thomas Howell 1937-7-29 13650 Siskiyou Scott Mt. between Trinity and Siskiyou cos. Comment
  CAS-BOT-BC296928  Eriophyllum wallacei John Thomas Howell 1928-3-11 3445 Riverside Garnet Station, Coachella Valley, Colorado Desert 213 Comment
  RSA51279  Erodium brachycarpum J. T. Howell 1947-4-23 23075 Marin East side of Drakes Estero, Point Reyes Peninsula. Comment
  CAS-BOT-BC40623  Erysimum capitatum John Thomas Howell 1930-5-12 4931 Kern Red Rock Canyon. Comment
  CAS-BOT-BC41537  Erysimum capitatum John Thomas Howell; R. C. Barneby 1954-5-9 29310 Fresno Sierra Nevada. Piedra. 170 Comment
  CAS-BOT-BC54543  Erysimum capitatum John Thomas Howell 1933-8-13 11508 Santa Clara Summit of Mount Hamilton. Comment
  SD75830  Erythranthe guttata Darley F. Howe 1969-8-12 Mono East of Sonora Pass 2438 Comment
  SD53151  Erythranthe primuloides Darley F. Howe 1962-8-14 Fresno Shave Lake, Sierra National Forest, meadow 1707 Comment
  CAS-BOT-BC110552  Eschscholzia John Thomas Howell 1955-7-19 30752 Plumas Sierra Nevada. Beckwourth. 1493 Comment
  SD113752  Eschscholzia lobbii Darley F. Howe 1948-5-21 1917 Placer Comment
  CAS-BOT-BC83080  Eschscholzia minutiflora John Thomas Howell; Gordon H. True 1973-4-6 49129 Kern Sand Canyon. Comment
  SEINET3094465 Image available Eucnide urens Melanie Howe, David K. Faulkner 1990-6-13 87 Inyo Suprise Canyon. 900 Comment
  SDSU6037  Eucrypta micrantha D. F Howe 1965-5-16 4041 San Bernardino 1372 Comment
  CAS-BOT-BC202421  Euphorbia ocellata John Thomas Howell 1959-9-19 34613 Butte 5 miles west of Oroville 45 Comment
  CAS-BOT-BC202399  Euphorbia ocellata John Thomas Howell 1931-10-12 8148 Mariposa 3 miles from Mt. Bullion on Coulterville road Comment
  CAS-BOT-BC202430  Euphorbia ocellata John Thomas Howell 1950-8-27 27426 Fresno Near Friant Dam Comment
  UCD142684  Euphorbia prostrata John Thomas Howell 1942-7-6 23328 Marin Mill Valley. Comment
  UCD142807  Euphorbia serpillifolia var. hirtula John Thomas Howell; Gordon H. True 1969-9-30 46368 Tulare Sierra Nevada. Kern Plateau, Burton Camp, Cherry Hill Road, Brush Creek Canyon. 1737 Comment
  CAS-BOT-BC312218  Eurybia radulina John Thomas Howell 1946-9-15 23002 Marin Near Potrero Meadows, Mt. Tamalpais Comment
  SD114504  Fagonia laevis Darley F. Howe 1937-5-8 499 San Diego Canyon off road from San Ysidro northeast to Otay Mesa Comment
  SD136117  Fagonia laevis Melanie Howe, R. M. Garcia 1994-1-17 376 Imperial Near intersection of SR-78 and S34, common in open areas around intersection. (IPB 10/07) Comment
  SD56833  Festuca californica D. F. Howe 1963-5-23 3528 Sonoma 3.8 miles north of Cloverdale on #128 334 Comment
  SDSU1110  Festuca californica D. F. Howe 1963-5-23 3528 Sonoma 3.8 miles north of Cloverdale on #128 335 Comment
  UCD65826  Festuca californica John Thomas Howell; Gordon H. True 1967-5-9 42243 Butte On NW side of Feather River Canyon near Pulga Bridge. 426 Comment
  CAS-BOT-BC278867  Festuca occidentalis John Thomas Howell 1944-6-10 19582 Santa Cruz 1.5 miles north of Felton Comment
  CAS-BOT-BC278902  Festuca occidentalis John Thomas Howell 1951-7-15 27778 Tulare Mineral King road 1828 Comment
  UCD66141  Festuca occidentalis John Thomas Howell 1958-8-2 34187 Fresno Copper Creek Canyon trail. 2286 Comment
  CAS-BOT-BC279022  Festuca rubra John Thomas Howell; Gordon H. True 1969-6-23 45841 Plumas Quincy 1036 Comment
  CAS-BOT-BC279032  Festuca rubra John Thomas Howell 1947-7-22 23508 San Bernardino South Fork, Santa Ana River, San Bernardino Mts. 2377 Comment
  CAS-BOT-BC278525  Festuca saximontana John Thomas Howell 1941-7-31 16630 Madera San Joaquin Mt. 3352 Comment
  CAS-BOT-BC278539  Festuca saximontana John Thomas Howell 1946-7-20 22598 Fresno South of Mono Rock 3596 Comment
  CAS-BOT-BC278547  Festuca saximontana John Thomas Howell 1947-8-10 23967 Inyo Near Sam Mack Lake, Big Pine Lakes 3657 Comment
  CAS-BOT-BC278618  Festuca subulata John Thomas Howell 1958-7-23 33839 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC77691  Ficus carica John Thomas Howell 1961-9-22 36750 Butte Feather River Highway 3 miles from Oroville Comment
  CAS-BOT-BC53908  Frangula californica subsp. cuspidata John Thomas Howell; Gordon H. True 1967-8-7 43451 Tulare Sierra Nevada - Kern Plateau - Lion Creek just north of Beach Meadow 2407 Comment
  CAS-BOT-BC55750  Frangula rubra subsp. rubra John Thomas Howell; R. C. Barneby 1954-5-10 29373 Fresno Kerckhoff Reservoir 320 Comment
  CAS-BOT-BC223667  Frankenia salina John Thomas Howell; Gordon H. True 1967-5-31 42499 Tulare From S 1/3 of area. About 4 1/2 miles east-northeast of Pixley 83 Comment
  SD114518  Fremontodendron decumbens Darley F. Howe 1978-6-25 5061 El Dorado Pine Hill Comment
  CAS-BOT-BC130248  Fritillaria biflora John Thomas Howell 1928-3-2 3361 Los Angeles Vermont [Canon] Canyon, Griffith Park, Los Angeles Comment
  SD45767  Fritillaria pinetorum Darley F. Howe 1954-5-29 2393 Ventura Mount Pinos. 2591 Comment
  CAS-BOT-BC130401  Fritillaria pinetorum John Thomas Howell 1928-5-26 3835 Ventura Between Chula Vista Camp and summit ridge of Pt. Pinos Comment
  GH385706  Galium angustifolium J. T. Howell 1928-5-19 3792 Unknown Anacapa Island Comment
  SD114357  Galium angustifolium subsp. angustifolium Darley F. Howe 1935-5-5 203 San Diego Hills near Otay Comment
  GH385821  Galium bolanderi J. T. Howell 1967-6-22 42654 Unknown Near mouth of Chambers Creek. Canyon of the Feather River North Fork 609 Comment
  GH385782  Galium californicum J. T. Howell 1930-6-15 5307 Unknown West side of Grizzley Peak, Berkeley Hills Comment
  RSA67159  Galium californicum subsp. californicum J. T. Howell 1930-6-8 5246 Sonoma 1 mile east of Bodega Bay Comment
  RSA118024  Galium clementis J. T. Howell 1955-5-17 s.n. Monterey East end of summit ridge of Juniper Serra Peak. 1768 Comment
  CAS-BOT-BC217582  Galium hypotrichium subsp. subalpinum John Thomas Howell 1940-8-2 15878 Tulare Slope north of Reflection Lake 3352 Comment
  POM203310  Galium nuttallii subsp. insulare J. T. Howell 1931-4-14 6376 Santa Barbara Santa Cruz Island. China Harbor. Comment
  UCD121879  Galium parisiense John Thomas Howell 1942-6-7 16973 Marin San Anselmo Canyon above Fairfax. Comment
  CAS-BOT-BC191897  Garrya flavescens John Thomas Howell 1952-10-27 28887 Tulare Amphitheater Point on road to Giant Forest, Sequoia Park Comment
  CAS-BOT-BC186313  Garrya flavescens John Thomas Howell 1940-8-10 16126 Fresno Near mouth of Bubbs Creek Comment
  UCD121133  Garrya fremontii John Thomas Howell 1960-5-1 35228 Tuolumne NE of Long Barn. Comment
  UCD121134  Garrya fremontii John Thomas Howell 1961-9-23 36891 Plumas Englemine. 1097 Comment
  CAS-BOT-BC56236  Gaultheria humifusa John Thomas Howell 1951-7-21 28076 Tulare White Chief region 3048 Comment
  CAS-BOT-BC56270  Gaultheria humifusa John Thomas Howell 1944-8-12 20358 Tuolumne Gaylor Lakes 3200 Comment
  SDSU2867  Gaultheria shallon D. F. Howe 1961-8-1 3106 Humboldt 6 miles north of Trinidad on #101. Comment
  CAS-BOT-BC478876  Gayophytum John Thomas Howell; Gordon H. True 1967-7-5 43189 Tulare 2.8 miles north of South Fork Kern River bridge on road to Troy Meadow 2194 Comment
  RSA34670  Gayophytum diffusum subsp. parviflorum J. T. Howell 1946-7-24 22684 Fresno Mono Creek between Fourth Recess and Gold Lake Comment
  SD112701  Geraea viscida Darley F. Howe 1941-7-10 1131 San Diego Jacumba Comment
  UCD103349  Geranium dissectum John Thomas Howell 1964-4-28 40555 Mariposa Near Morman Bar on road to Ben Hur. Comment
  SDSU7336  Geranium molle D. F. Howe 1959-8-4 2799 Trinity Roadside, 51 miles west of Weaverville on #299. 152 Comment
Read comments
Dec 5 2008
  CDA4653  Geranium potentilloides J. T. Howell 1969-4-2 45514 Marin Point Reyes National Seashore, Meadow Trail to Mt. Wittenberg. 0 Comment
  CAS-BOT-BC459359  Geum macrophyllum John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-12 54530 . Inyo Mosquito Flat, north end of Rock Creek Lake Basin, Sierra Nevada 3124 Comment
  RSA636  Gilia angelensis J. T. Howell 1928-2-25 836 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  SD70012  Gilia latiflora subsp. elongata Darley F. Howe 1968-3-21 4496 San Bernardino 12.5 miles west of Barstow on Highway 58. 366 Comment
  UC908531  Gilia leptantha subsp. pinetorum John Thomas Howell 1928-5-26 3836 Ventura between Chula Vista Camp and Mt. Pinos; summit of Mt. Pinos Comment
  RSA469454  Gilia malior J. T. Howell 1948-4-26 24259 Kern 2 miles north of Mohave. Comment
  SDSU3085  Gilia modocensis D. F. Howe 1962-4-15 3194 San Bernardino 1.5 miles N of Summit of Cajon Pass Road (#395). Comment
  CAS-BOT-BC402084  Gilia ochroleuca subsp. bizonata John Thomas Howell; Catherine Best 1983-4-19 s.n. Tulare Kern River Canyon between Kernville and Road's End 1066 Comment
  SD127824  Glebionis coronaria Melanie Howe 1988-3-30 15 San Diego El Cajon, vacant lot next to parking lot of Broadway Animal Hospital. Comment
  CAS-BOT-BC303816  Gnaphalium John Thomas Howell 1976-7-16 51892 Plumas Spanish Creek at mouth of Wapaunsie Creek 1097 Comment
  RSA860  Gnaphalium chilense J. T. Howell 1927-10-29 781 Orange Bryant Ranch near Long Beach. 15 Comment
  CAS-BOT-BC303195  Gnaphalium palustre John Thomas Howell 1950-7-15 26912 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  SD112741  Gnaphalium palustre Darley F. Howe 1947-6-27 1751 San Bernardino Bluff Lake 2440 Comment
  CAS-BOT-BC302490  Gnaphalium palustre John Thomas Howell 1976-10-29 52274 El Dorado Bottom of Folsom Lake at Brown's Ravine boat landing 121 Comment
  CAS-BOT-BC307361  Gnaphalium palustre John Thomas Howell 1969-9-13 46144 Nevada 3 miles from Boca on road to Hobart Mills, Sierra Nevada 1828 Comment
  CAS-BOT-BC304701  Grindelia hirsutula John Thomas Howell 1932-10-16 10827 Alameda Wash of Mocho Creek, Livermore Valley Comment
  CAS-BOT-BC304846  Grindelia hirsutula John Thomas Howell 1933-11-19 11728 Solano Suisun Marshes at Pierce Station Comment
  CAS-BOT-BC304854  Grindelia hirsutula John Thomas Howell 1933-9-17 11671 Solano Suisun Comment
  CAS-BOT-BC304900  Grindelia hirsutula J. T. Howell 1932-10-8 10804 Napa Napa River Comment
  CAS-BOT-BC304901  Grindelia hirsutula J. T. Howell 1932-10-8 10804 Napa Napa River Comment
  CAS-BOT-BC305138  Grindelia hirsutula J. T. Howell 1930-5-19 5179 Santa Barbara Summerland Comment
  CAS-BOT-BC314569  Grindelia hirsutula John Thomas Howell 1929-10-25 4532 Solano North end of Carquinez Bridge Comment
  CAS-BOT-BC314605  Grindelia hirsutula John Thomas Howell; Gordon H. True 1971-5-26 47637 Placer Northern limits of Lincoln 48 Comment
  UC1176895  Grindelia hirsutula John Thomas Howell 1946-11-3 23033 Marin Hamilton Field Comment
  GH417655  Grindelia hirsutula var. maritima J. T. Howell 1945-7-4 21272 Unknown Inverness Ridge Comment
  POM204017  Grindelia hirsutula var. maritima J. T. Howell 1933-8-11 11489 San Francisco Presidio, San Francisco. Comment
  GH37698  Grindelia humilis f. pubescens J. T. Howell 1932-10-8 10805 Unknown Upper edge of tidal flat, Cuttings Wharf on Napa River Comment
  SD51276  Grindelia nana Darley F. Howe 1961-8-3 3178 Siskiyou 26.5 miles east of Highway #99 on Highway 89 Comment
  CAS-BOT-BC304683  Grindelia squarrosa John Thomas Howell 1974-9-20 50907 Plumas Chilcoot 1554 Comment
  GH417722  Grindelia stricta var. angustifolia J. T. Howell 1933-7-30 11486 Unknown Bolinas Bay Comment
  SD71025  Grindelia stricta var. angustifolia John Thomas Howell 1964-12-6 41032 San Mateo Millbrae, vacant lot near Southern Pacific Railway Station Comment
  POM230322  Grindelia stricta var. stricta J. T. Howell 1937-7-31 s.n. Humboldt Salt marsh bordering Humboldt Bay at Arcata. Comment
  SD113057  Gutierrezia sarothrae Darley F. Howe 1935-6-9 137 San Diego Lower Otay Dam Comment
  SBBG92158  Gutierrezia sarothrae D. F. Howe 1940-9-27 Inyo 29 mi E of US Hwy 395 on St Hwy 168 1340 Comment
  HSC1954  Helenium puberulum J. T. Howell 1938-7-17 13984 Solano Suisun Mashes at Suisan Comment
  CAS-BOT-BC223906  Helianthemum scoparium John Thomas Howell 1925-11-28 1603 Solano Green Creek Canon [Canyon] Comment
  RSA215917  Helianthus annuus subsp. lenticularis J. T. Howell 1957-9-22 32969 San Francisco In waste ground, north base of Telegraph Hill, San Francscio. Comment
  CAS-BOT-BC305676  Helianthus gracilentus John Thomas Howell 1927-7-3 2638 Orange Claymine Canon [Canyon], n. Santa Ana Mts. 304 Comment
  SD37246  Heliomeris multiflora var. nevadensis Darley F. Howe 1945-9-22 1349 Inyo Big Pine Comment
  CAS-BOT-BC312141  Hemizonella minima John Thomas Howell 1951-7-19 27963 Tulare Monarch Lakes Trail, Mineral King and Vicinity 2590 Comment
  CAS-BOT-BC312145  Hemizonella minima John Thomas Howell; Gordon H. True 1970-6-23 46621 Tulare Cherry Hill Road in Poison Meadow Creek Canyon, Kern Plateau, Sierra Nevada 1950 Comment
  CAS-BOT-BC312149  Hemizonella minima John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53813 Tulare Sherman Pass Road 4.5 miles east of junction with Cherry Hill Road, Kern Plateau, Sierra Nevada 2255 Comment
  SD62035  Hemizonia congesta subsp. clevelandii Darley F. Howe 1965-8-14 Sonoma East of Santa Rosa. 120 Comment
  SDSU4568  Hemizonia congesta subsp. clevelandii D. F. Howe 1962-7-28 3361 Sonoma Mark West Creek, 3.4 miles east of #101. Comment
  JEPS12626  Hemizonia congesta subsp. lutescens John Thomas Howell 1924-8-31 648 Marin near Phoenix Lake Comment
  UC473562  Hemizonia congesta subsp. lutescens John Thomas Howell 1930-7-27 5411 Sonoma 4 mi n Bodega Bay Comment
  CAS-BOT-BC309836  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1932-9-17 10763 Napa 3 miles west of Napa Comment
  RSA137090  Hemizonia fitchii J. T. Howell 1955-8-24 30904 Contra Costa Mt. Diablo near Turtle Rock. 259 Comment
  CAS-BOT-BC310183  Hesperevax sparsiflora var. brevifolia John Thomas Howell 1929-5-25 4227 Mendocino Mendocino coastal plain at Fort Bragg 15 Comment
  CAS-BOT-BC508664  Hesperocallis undulata John Thomas Howell 1928-3-24 3500 San Diego Near Palm was, w/Colorado Desert Comment
  SD127798  Heteromeles arbutifolia Melanie Howe 1988-6-15 32 San Diego In natural area bordering park at Margerum and Larchwood, San Diego Comment
  CAS-BOT-BC308929  Heterotheca John Thomas Howell 1958-5-21 33041 Kern 2 miles southwest of Miracle Hot Springs 731 Comment
  UCR88744  Heterotheca oregona J. T. Howell 1959-9-20 34620 Butte eastern outskirts of Oroville on level of Feather River 61 Comment
  CAS-BOT-BC311284  Heterotheca sessiliflora subsp. echioides John Thomas Howell 1933-8-17 11557 San Benito Near Hernandez Comment
  SD44975  Heuchera micrantha Darley F. Howe 1952-6-22 2244 Monterey Santa Lucia Mts 456 Comment
  CAS-BOT-BC420930  Heuchera micrantha var. diversifolia John Thomas Howell 1944-6-11 10596 Santa Cruz In redwoods 1.5 miles north of Felton Comment
  RSA0063137  Heuchera micrantha var. hartwegii J. Wendell Howe 1204 Unknown Unspecified. Comment
  CAS-BOT-BC424450  Heuchera rubescens John Thomas Howell 1946-7-14 22243 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC424451  Heuchera rubescens John Thomas Howell 1947-8-8 23908 Inyo Second to Third Lake, Big Pine Lakes 3048 Comment
  CAS-BOT-BC425295  Heuchera rubescens John Thomas Howell 1944-8-11 20325 Tuolumne Lembert Dome, Tuolumne Meadows Comment
  UC701259  Hieracium albiflorum John Thomas Howell 1939-8-6 15102 Siskiyou El, Mt. Marble Mts., Elk Mt. Comment
  CAS-BOT-BC318537  Hieracium greenei John Thomas Howell 1961-6-19 36530 Shasta Lily Pond Trail near Reflection Lake, Lassen Volcanic National Park 1798 Comment
  CAS-BOT-BC318647  Hieracium horridum John Thomas Howell 1937-7-24 13421 Siskiyou Caribou Basin, Salmon-Trinity Alps Comment
  CAS-BOT-BC312954  Hieracium triste John Thomas Howell 1951-7-18 27922 Tulare Mineral King and vicinity. West side, Franklin Pass 335 Comment
  CAS-BOT-BC55365  Hirschfeldia incana John Thomas Howell 1939-5-14 14687 Marin Mill Valley station. Comment
  CAS-BOT-BC280693  Holcus lanatus John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-29 53180 Calaveras Snowshoe Spring near Dorrington 1463 Comment
  CAS-BOT-BC320135  Holocarpha heermannii John Thomas Howell 1962-9-26 38944 Kern 2.5 miles east of Glennville, Greenhorn Mountains 1066 Comment
  CAS-BOT-BC320247  Holocarpha obconica John Thomas Howell 1930-9-28 5500 Contra Costa 6.3 miles from Byron on Marsh Creek Road Comment
  SD51265  Holodiscus discolor Darley F. Howe 1961-8-1 Humboldt 3.3 miles north of Trinidad on #101 Comment
  CAS-BOT-BC150018  Holodiscus discolor var. discolor John Thomas Howell 1951-6-27 s.n. Plumas Jamison Creek 1828 Comment
  RSA201342  Holodiscus microphyllus var. glabrescens J. T. Howell 1960-8-19 36198 Shasta Summit ridge, Brokeoff Mtn. 2805 Comment
  CAS-BOT-BC150162  Holodiscus microphyllus var. microphyllus John Thomas Howell 1940-7-28 15639 Fresno Near Sphinx Creek, Bubbs Creek Comment
  CAS-BOT-BC388568  Holosteum umbellatum John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-4-28 53372 Siskiyou Grenada 792 Comment
  CAS-BOT-BC284642  Hordeum brachyantherum subsp. brachyantherum John Thomas Howell 1943-7-18 18510 Nevada Willow Valley just west of Castle Peak Comment
  CAS-BOT-BC289305  Hordeum brachyantherum subsp. brachyantherum John Thomas Howell; Gordon H. True 1970-7-30 47204 Tulare Along Salmon Creek at north end of Big Meadow, Kern Plateau, Sierra Nevada 2377 Comment
  CAS-BOT-BC289309  Hordeum brachyantherum subsp. brachyantherum John Thomas Howell 1942-7-26 17238 Tulare Mineral King Comment
  CAS-BOT-BC289506  Hordeum brachyantherum subsp. californicum John Thomas Howell 1963-6-22 39515 Monterey Near summit of Mustang Grade east of San Lorenzo Creek Comment
  CAS-BOT-BC284705  Hordeum jubatum John Thomas Howell 1963-8-20 40128 Kern South Fork Valley about 2 miles northeast of Weldon 807 Comment
  CAS-BOT-BC289583  Hordeum marinum subsp. gussoneanum John Thomas Howell 1971-3-23 47583 Merced About 3 miles easterly from Stevison 30 Comment
  CAS-BOT-BC284788  Hordeum murinum subsp. glaucum John Thomas Howell 1958-5-24 33286 Inyo Whitney Portal road 2346 Comment
  CAS-BOT-BC282031  Hordeum murinum subsp. leporinum John Thomas Howell 1932-3-13 8218 Ventura San Nicolas Island Comment
  CAS-BOT-BC284900  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-2 37410 Merced Merced Comment
  CAS-BOT-BC273494  Hordeum vulgare John Thomas Howell 1961-6-21 36680 Plumas Greenville 1097 Comment
  CAS-BOT-BC532310  Horkelia fusca var. parviflora John Thomas Howell 1963-7-10 39729 Alpine Sagebrush flat, 0.5 mile west of Monitor Pass; Sierra Nevada 2529 Comment
  CAS-BOT-BC537879  Horkelia fusca var. parviflora John Thomas Howell 1944-8-5 19957 Tuolumne Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC146325  Horkelia tularensis John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53871 Tulare Bald Mountain, Kern Plateau 2834 Comment
  SDSU4299  Hosackia gracilis D. F. Howe 1963-5-23 3536 Mendocino 15 miles south of Ft. Bragg on #1. Comment
  SD113625  Hosackia incana Darley F. Howe 1972-5-4 4822 Mendocino Ridge Road, 0.5 miles north of Pacific Woods Road, east of Gualala 152 Comment
  CAS-BOT-BC315976  Hulsea vestita subsp. vestita John Thomas Howell 1950-7-13 26761 Tulare Bakeoven Meadows, South Fork of Kern River, Sierra Nevada 2468 Comment
  CAS-BOT-BC400988  Hypericum anagalloides John Thomas Howell 1939-8-5 15083 Siskiyou Spirit Lake, Marble Mts. 1828 Comment
  CAS-BOT-BC401018  Hypericum anagalloides John Thomas Howell; Gordon H. True 1970-7-28 47032 Tulare East side of Big Meadow on loop road south of North Manter Pass Trail. Kern Plateau 2377 Comment
  CAS-BOT-BC410205  Hypericum concinnum John Thomas Howell 1955-6-14 30434 Shasta east of Whiskeytown Comment
  CAS-BOT-BC401278  Hypericum perforatum John Thomas Howell 1960-8-20 36242 Tehama Near Lassen Volcanic National Park. Morgan 1463 Comment
  CAS-BOT-BC311340  Hypochaeris glabra John Thomas Howell 1925-5-23 1086 Merced Merced River bottom 1 mile ne. of Hopeton Bridge Comment
  CAS-BOT-BC133499  Iris John Thomas Howell 1960-6-8 35436 Fresno Near Sequoia Lake 1767 Comment
  CAS-BOT-BC324729  Isocoma menziesii var. vernonioides John Thomas Howell 1927-10-8 3130 Ventura Point Mugu, Sea level Comment
  CAS-BOT-BC57690  Isoetes bolanderi John Thomas Howell; Gordon H. True 1969-9-29 46281 Tulare Upper Dry Lake, east of north end of Long Meadow, Kern Plateau 2392 Comment
  UC810503  Isoetes howellii John Thomas Howell 1937-6-6 13015 Sonoma Sebastopol Comment
  POM193906  Isopyrum occidentale J. T. Howell 1930-4-6 4663 Santa Clara 8 miles from summit of Mt. Hamilton on road to San Antonio Valley. Comment
  UC9320  Isopyrum stipitatum Thos. Howell April, 1892 18 Siskiyou Colestein; Siskiyou Mts., Colestein Comment
  CAS-BOT-BC324853  Iva axillaris John Thomas Howell; Gordon H. True 1967-7-3 42827 Tulare North of Long Valley on road to Rockhouse Meadow, Kern Plateau, Sierra Nevada 1950 Comment
  CAS-BOT-BC142741  Ivesia lycopodioides subsp. lycopodioides John Thomas Howell 1946-7-22 22663 Fresno Pioneer Basin 3291 Comment
  CAS-BOT-BC142740  Ivesia lycopodioides subsp. lycopodioides John Thomas Howell 1949-7-25 25740 Tulare Siberian Pass Creek 3352 Comment
  CAS-BOT-BC142842  Ivesia muirii John Thomas Howell 1947-8-11 23994 Inyo Baker Lakes 3505 Comment
  CAS-BOT-BC143413  Ivesia saxosa John Thomas Howell; Gordon H. True 1966-7-12 41808 Kern Just east of Fay Creek Canyon, Kern Plateau 2194 Comment
  CAS-BOT-BC340248  Jensia rammii John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-5-17 52955 Calaveras Between Glencoe and Railroad Flat 914 Comment
  CAS-BOT-BC48139  Jepsonia heterandra John Thomas Howell 1956-12-4 31987 Mariposa Merced River Canyon, 1.5 miles above Briceburg Comment
  CAS-BOT-BC110038  Juncus acutus John Thomas Howell 1927-6-30 2623 Los Angeles 1 mile east of Long Beach. 15 Comment
  POM304503  Juncus bryoides J. T. Howell 1941-8-8 16836 Madera Garnet Creek to San Joaquin Mountain. Comment
  UCD141381  Juncus bufonius John Thomas Howell 1967-4-30 42151 Tulare ca. 4.5 miles east-northeast of Pixley. From N1/3 of area. 83 Comment
  SEINET8133751 Image available Juncus drummondii J. T. Howell 1942-1 17371 Unknown Comment
  RSA54101  Juncus ensifolius J. T. Howell 1946-9-1 22983 El Dorado Echo Summit. 2256 Comment
  UC905100  Juncus hemiendytus var. hemiendytus John Thomas Howell 1948-7-26 25018 Tulare Bubbs Creek Canyon 3139 Comment
  SD112219  Juncus macrandrus Darley F. Howe 1946-8-5 1495 San Bernardino Fawnskin, Bear Valley, San Bernardino Mountains. (IPB 1/08) Comment
  SDSU11807  Juncus mertensianus D. F. Howe 1959-7-30 2751 Mono South of Sonora Pass 2933 Comment
  RSA40003  Juncus mexicanus J. T. Howell 1944-8-5 19936 Tuolumne Soda Springs, Tuolumne Meadows. Comment
  SD53166  Juncus oxymeris Darley F. Howe 1962-8-14 Fresno Shaver Lake, Sierra National Forest, by dry stream bed. 1676 Comment
  SD37205  Juncus parryi Darley F. Howe 1941-8-9 Inyo Mount Whitney Trail from Lone Pine Creek. 3353 Comment
  RSA127071  Juncus phaeocephalus var. paniculatus J. T. Howell 1945-6-24 s.n. Marin Lagunitas andeus?, Mt. Tamalpais. Comment
  SD112224  Juncus phaeocephalus var. paniculatus Darley F. Howe 1937-4-26 465 San Diego Judson Dam, near National City. Comment
  SD98913  Juncus regelii Darley F. Howe 1977-6-29 Trinity Weaver Bally Road. 2042 Comment
  UC1026493  Juncus tiehmii John Thomas Howell 1950-7-15 26927 Tulare Bakeoven Meadows Sierra Nevada, South Fork of Kern River 2468 Comment
  CAS-BOT-BC80972  Juniperus californica John Thomas Howell 1970-9-24 47382 Kern 0.5 mile south of summit of Bodfish-Havilah road 1097 Comment
  CAS-BOT-BC80973  Juniperus californica John Thomas Howell 1970-9-24 47382 Kern 0.5 mile s. of summit of Bodfish-Havilah road 1097 Comment
  CAS-BOT-BC81210  Juniperus occidentalis John Thomas Howell 1934-6-16 12208 B Modoc Parker Creek, Warner Mts. 1584 Comment
  RSA8481  Keckiella breviflora J. T. Howell 1933-8-18 11579 Monterey 7.5 miles east of Jamesburg, Santa Lucia Mountains. Comment
  CAS-BOT-BC238280  Keckiella rothrockii John Thomas Howell 1950-7-24 27316 Tulare Ridge s. of Monache Creek 3352 Comment
  CAS-BOT-BC238281  Keckiella rothrockii John Thomas Howell 1950-7-24 27283 Tulare Monache Creek S. Fk. 2743 Comment
  CAS-BOT-BC238285  Keckiella rothrockii John Thomas Howell 1942-7-31 17431 Tulare Between Big Arroyo and Chagoopa Plateau Comment
  CAS-BOT-BC246220  Keckiella rothrockii John Thomas Howell; Gordon H. True 1970-6-24 46677 A Tulare North Manter Pass Trail east of Big Meadow, Kern Plateau, Sierra Nevada 2438 Comment
  CAS-BOT-BC246221  Keckiella rothrockii John Thomas Howell; Gordon H. True 1967-8-8 43583 Tulare About 7 miles from Chimney Meadow on road to Long Valley, Kern Plateau, Sierra Nevada 2103 Comment
  UCR139459  Koeleria macrantha J. T. Howell 1947-8-5 23797 Inyo Sierra Nevada Mtns., Fifth Lake, Big Pine Lakes 3354 Comment
  CAS-BOT-BC271254  Koeleria pyramidata John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53843 Tulare Paloma Meadows, Kern Plateau, Sierra Nevada 2590 Comment
  CAS-BOT-BC273650  Koeleria pyramidata John Thomas Howell 1949-8-5 26060 Inyo Army Pass 3657 Comment
  CAS-BOT-BC273797  Koeleria pyramidata John Thomas Howell; Gordon H. True 1970-7-28 46956 Tulare West side of Big Meadow just south of Pipe Spring. Kern Plateau 2377 Comment
  CAS-BOT-BC499178  Kopsiopsis hookeri John Thomas Howell 1958-5-18 s.n. Marin At West Point, Mt. Tamalpais Comment
  UCR66430  Lactuca virosa J. T. Howell 1943-8-22 19310 Contra Costa San Francisco Bay Region/Coast Range, near head of San Leandro Creek Canyon 244 Comment
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Jul 7 2009
  UCD133509  Lactuca virosa John Thomas Howell 1954-9-8 30108 San Mateo Skyline Blvd. at San Andreas Lake, 2 miles west of San Bruno. Comment
  CAS-BOT-BC341255  Lagophylla diabolensis John Thomas Howell 1933-8-17 11545 San Benito Near Hernandez Comment
  CAS-BOT-BC341425  Lagophylla minor John Thomas Howell 1939-4-30 14631 Napa Walter Springs Comment
  SDSU3125  Langloisia setosissima subsp. punctata D. F. Howe 1958-4-12 2605 San Bernardino East base of Bristol Mtns., Mojave Desert. Comment
  SD50939  Lappula redowskii Darley F. Howe 1958-7-29 2666 Mono 8 miles northwest of Bridgeport on # 395 Comment
  RSA443  Larrea tridentata J. T. Howell 1927-6-11 102 San Bernardino New Hwy S side of Cajon Pass. 823 Comment
  UC517469  Lasthenia glabrata subsp. glabrata John Thomas Howell 1933-4-1 10925 Sonoma Petaluma Comment
  CAS-BOT-BC366103  Lasthenia minor J. T. Howell 1933-5-1 11202 San Francisco Presidio Comment
  CAS-BOT-BC213327  Lathyrus jepsonii subsp. californicus John Thomas Howell 1956-6-3 31461 San Francisco Emarcadero and Front Street, San Francisco Comment
  SD56820  Lathyrus littoralis Darley F. Howe 1963-5-21 3512 Monterey Monterey Peninsula Comment
  JEPS55328  Lathyrus rigidus Thos. Howell Apr 1892 Del Norte Crescent City Comment
  CAS-BOT-BC169433  Lathyrus sulphureus John Thomas Howell 1923-7-1 99 Mariposa Wawona 1219 Comment
  CAS-BOT-BC205069  Lathyrus sulphureus John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1969-6-24 2423 Plumas Butterfly Botanical Area and Vicinity. Between mouth of Butterfly Creek and Valley proper 914 Comment
  RSA7690  Lavatera cretica J. T. Howell 1953-5-25 11342 San Francisco The marina Comment
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Jul 29 2013
  CAS-BOT-BC323252  Layia chrysanthemoides John Thomas Howell 1931-4-2 6048 Sonoma Boyes Springs Comment
  CAS-BOT-BC321101  Layia glandulosa John Thomas Howell 1958-5-28 33527 Inyo Bishop Creek 1950 Comment
  SD88438  Layia glandulosa Darley F. Howe 1972-4-21 Santa Barbara Near entrance to Vandenburg Air Base on Floradane Avenue. North of Lompoc 60 Comment
  CAS-BOT-BC374919  Layia pentachaeta subsp. pentachaeta John Thomas Howell; R. C. Barneby 1954-5-11 40543 Mariposa Sierra Nevada. 9 miles NW of Raymond 289 Comment
  CAS-BOT-BC329335  Layia septentrionalis John Thomas Howell 1976-4-29 51618 Lake 2.5 miles S of Lakeport 426 Comment
  CAS-BOT-BC534656  Lemna minuta John Thomas Howell 1956-8-26 31806 San Francisco Pine Lake, San Francisco Comment
  SD88457  Leontodon saxatilis subsp. longirostris Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  CAS-BOT-BC339122  Leontodon saxatilis subsp. saxatilis John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-5-17 52883 Calaveras Foothills near Wallace 66 Comment
  CAS-BOT-BC339132  Leontodon saxatilis subsp. saxatilis John Thomas Howell 1975-6-2 51049 Merced Peach orchard near Planada on road to Merced Comment
  CAS-BOT-BC88697  Lepidium acutidens John Thomas Howell 1933-3-26 10873 Alameda Livermore Valley near Livermore. Comment
  CAS-BOT-BC89006  Lepidium dictyotum John Thomas Howell 1929-4-11 4141 Merced San Joaquin Valley. 7.5 miles southwest of Merced on Los Banos Road. 45 Comment
  CAS-BOT-BC89173  Lepidium draba John Thomas Howell 1926-4-3 1781 Napa Near Yountville. Comment
  CAS-BOT-BC89379  Lepidium fremontii John Thomas Howell 1958-5-28 33565 Inyo Sierra Nevada. Bishop Creek. 1828 Comment
  CAS-BOT-BC89410  Lepidium fremontii John Thomas Howell 1930-5-13 4930 Kern Red Rock Canyon. Comment
  SD102195  Lepidium fremontii Darley Howe 1978-5-29 San Bernardino Near Barstow 640 Comment
  CAS-BOT-BC89653  Lepidium lasiocarpum subsp. lasiocarpum John Thomas Howell 1930-5-13 4940 A Kern Red Rock Canyon. Comment
  CAS-BOT-BC89710  Lepidium latifolium John Thomas Howell 1948-8-10 25285 A Santa Clara 4 miles north of Madrone. Comment
  CAS-BOT-BC89741  Lepidium latifolium John Thomas Howell 1966-6-2 41550 Sonoma South of Schellville near Black Point road. Comment
  CAS-BOT-BC58346  Lepidium montanum subsp. canescens John Thomas Howell 1934-6-15 12182 Modoc Alturas. Comment
  RSA88375  Lepidium nitidum J. T. Howell 1953-5-25 29034 Tuolumne Twain Harte. 1128 Comment
  CAS-BOT-BC12513  Lepidium nitidum John Thomas Howell 1926-3-20 1687 Napa Napa Valley. Calistoga. Comment
  CAS-BOT-BC12798  Lepidium perfoliatum John Thomas Howell 1964-8-10 40913 Alpine Sierra Nevada. Markleeville. 1676 Comment
  CAS-BOT-BC12987  Lepidium virginicum John Thomas Howell 1974-7-10 50531 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC13046  Lepidium virginicum var. menziesii John Thomas Howell 1960-6-5 35292 Merced Delhi. 36 Comment
  CAS-BOT-BC13085  Lepidium virginicum var. menziesii John Thomas Howell 1958-5-25 33347 Inyo Sierra Nevada. Corral on Carroll Creek. 1676 Comment
  CAS-BOT-BC60079  Lepidium virginicum var. menziesii John Thomas Howell 1943-7-21 18679 Nevada West side of Donner Pass near Norden. 2133 Comment
  CAS-BOT-BC273963  Leptochloa fusca subsp. fascicularis John Thomas Howell 1962-9-21 38682 Kern Kern River Canyon 426 Comment
  UC117239  Lesquerella occidentalis subsp. occidentalis Thos. Howell May, 1890 767 Unknown Klamath City Comment
  CAS-BOT-BC339374  Lessingia glandulifera var. glandulifera John Thomas Howell 1933-8-17 11531 San Benito The Pinnacles Comment
  CAS-BOT-BC339393  Lessingia glandulifera var. glandulifera John Thomas Howell 1928-10-14 4080 San Bernardino Near Fontana Comment
  JEPS28963  Lessingia glandulifera var. glandulifera John Thomas Howell 1962-9-25 38930 Kern s of Kernville Hot Springs; Sierra Nevada 792 Comment
  UC421678  Lessingia glandulifera var. glandulifera John Thomas Howell 1927-8-2 2929 Riverside top of control on road to Hemet (Mt. San Jacinto); Mt. San Jacinto Comment
  UC990950  Lessingia glandulifera var. glandulifera D. F. Howe 1946-6-3 San Bernardino 16 mi se Victorville Comment
  POM197811  Lessingia hololeuca John T. Howell 1926-10-20 2222 Marin Ridge between Alto and Chapman Comment
  JEPS88692  Lessingia tenuis John Thomas Howell 1955-7-8 30645 Monterey Hanging Valley Santa Lucia Mts., Hanging Valley 838 Comment
  CAS-BOT-BC342072  Leucanthemum maximum John Thomas Howell 1956-9-2 31836 San Francisco San Francisco. Northeast end of Lake Merced Comment
  CAS-BOT-BC233784  Lewisia congdonii John Thomas Howell 1960-6-6 35318 Fresno Kings Canyon Road 8 mi. west of Horseshoe Bend, Sierra Nevada 1463 Comment
  UCR70870  Lewisia disepala J. T. Howell 1940-6-1 15573 Mariposa Between Snow Creek and Mt. Watkins Ridge Comment
  CAS-BOT-BC444079  Lewisia leeana John Thomas Howell 1937-7-24 13437 Siskiyou Caribou Basin, Salmon-Trinity Alps 2286 Comment
  CAS-BOT-BC444210  Lewisia nevadensis John Thomas Howell 1948-7-30 25198 Tulare John Muir Trail west of Center Peak 3200 Comment
  CAS-BOT-BC444211  Lewisia nevadensis John Thomas Howell 1951-7-20 28009 Tulare Mineral King and Vicinity. Southeast of Farewell Gap 3291 Comment
  CAS-BOT-BC444215  Lewisia nevadensis John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53845 Tulare Paloma Meadows, Kern Plateau 2590 Comment
  CAS-BOT-BC444248  Lewisia pygmaea John Thomas Howell 1946-7-19 22522 Fresno Fourth Recess 3078 Comment
  CAS-BOT-BC444375  Lewisia pygmaea John Thomas Howell 1944-8-12 s.n. Tuolumne Gaylor Lakes 3291 Comment
  CAS-BOT-BC444409  Lewisia rediviva John Thomas Howell 1963-5-6 s.n. Monterey Jolon, Santa Lucia Mts. Comment
  CDA32465  Leymus X multiflorus J. T. Howell 1972-6-25 48900 Solano Carquinez Strait; Overlooking Carquinez Strait, western part of Benecia 0 Comment
  CAS-BOT-BC273580  Leymus californicus John Thomas Howell 1945-7-15 21299 Marin Fairfax Hills Comment
  CAS-BOT-BC283781  Leymus cinereus John Thomas Howell 1944-8-4 19897 Mono Leavitt Meadow Comment
  CAS-BOT-BC272229  Leymus pacificus John Thomas Howell 1948-6-6 24335 Marin Stinson Beach Comment
  CAS-BOT-BC272230  Leymus pacificus John Thomas Howell 1956-8-26 31816 San Francisco Near Pine Lake, San Francisco Comment
  CAS-BOT-BC272231  Leymus pacificus John Thomas Howell 1957-9-1 32927 San Francisco Sutro Heights above Pt. Lobos, San Francisco Comment
  CAS-BOT-BC272129  Leymus triticoides John Thomas Howell 1950-7-20 27125 Tulare Bakeoven Meadows, South Fork of Kern River, Sierra Nevada 2468 Comment
  CAS-BOT-BC272130  Leymus triticoides John Thomas Howell 1958-5-22 33123 Tulare Kern River Canyon 6 miles south of Roads End P.O., Sierra Nevada 944 Comment
  CAS-BOT-BC272131  Leymus triticoides John Thomas Howell; Gordon H. True 1967-8-7 43491 Tulare Forest on Beach Creek just north of Beach Meadow, Kern Plateau, Sierra Nevada 2377 Comment
  CAS-BOT-BC272135  Leymus triticoides John Thomas Howell; Gordon H. True 1967-7-3 42859 Tulare Rockhouse Meadow, Kern Plateau, Sierra Nevada 1706 Comment
  UC1106113  Leymus triticoides John Thomas Howell 1944-5-28 19528 Marin between Almonte and Mill Valley Comment
  SD112760  Lilium parryi Darley F. Howe 1948-8-10 1863 San Bernardino San Bernardino Mtns., south fork of Santa Ana River (IPB 1/07) 2286 Comment
  SEINET4411626 Image available Limnanthes bakeri J. T. Howell 1948-1 1181 Unknown Comment
  CAS-BOT-BC246139  Limosella aquatica John Thomas Howell 1963-7-10 39748 Alpine 0.5 mile west of Monitor Pass, Sierra Nevada 2529 Comment
  UC618377  Linanthus acicularis John Thomas Howell 1938-5-22 13789 Marin San Anselmo Canyon Comment
  SD41252  Linanthus californicus Darley F. Howe 1946-6-3 Orange Santa Ana Mountains Comment
  SDSU3184  Linanthus dichotomus D . F. Howe 1962-4-15 3197 Kern Johannesburg, Kern Co. 1097 Comment
  RSA0096832  Linanthus filipes J. T. Howell 1938-5-3 5345 Madera 19 miles from Coarse Gold on road to Madera. Comment
  UC526130  Linanthus harknessii John Thomas Howell 1934-6-12 12031 Modoc Plum Valley Warner Mts. Comment
  RSA51465  Linanthus oblanceolatus J. T. Howell 1949-8-11 s.n. Tulare Rock Creek. 3201 Comment
  SD53255  Linanthus parryae Darley F. Howe 1962-4-19 3210 Kern 11.5 miles south of junction with #395 on #6 1006 Comment
  UC517481  Linanthus parviflorus John Thomas Howell 1933-4-22 11083 San Benito near San Benito Comment
  SD114237  Linanthus pungens Darley F. Howe 1941-8-9 1266 Inyo Lone Pine Creek, Sierra Nevadas 3657 Comment
  CAS-BOT-BC111959  Lipocarpha John Thomas Howell; Gordon H. True 1969-9-29 46287 Tulare Upper Dry Lake, east of north end of Long Meadow. 2392 Comment
  CAS-BOT-BC111968  Lipocarpha micrantha John Thomas Howell 1930-10-12 5586 El Dorado River's Edge, North Fork of Cosumnes River, 6.5 miles north of Plymouth. 243 Comment
  CAS-BOT-BC428415  Lithophragma tenellum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49165 Lassen Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC174464  Loeflingia squarrosa John Thomas Howell 1930-5-10 4802 Riverside At top of St. John's Grade Comment
  CAS-BOT-BC342212  Logfia filaginoides John Thomas Howell 1940-5-12 s.n. Marin Chianti Country e. of Little Carson Comment
  CAS-BOT-BC283556  Lolium John Thomas Howell; Gordon H. True 1971-5-26 47619 Placer N limits of Lincoln 48 Comment
  UC1106114  Lolium multiflorum John Thomas Howell 1939-5-21 Marin W. Tiburon Comment
  CAS-BOT-BC269066  Lolium perenne John Thomas Howell 1960-7-18 35567 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  RSA452596  Lomatium marginatum var. purpureum J. T. Howell 1931-4-19 6466 Napa Conn Valley (region of type locality) Comment
  SD53271  Lomatium mohavense Darley F. Howe 1962-8-18 3207 Inyo 28.5 miles north of Littlelake on Highway 395. 1220 Comment
  CAS-BOT-BC240452  Lonicera hispidula John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54412 Butte Madrone Lake near Berry Creek 600 Comment
  CAS-BOT-BC243944  Lonicera involucrata var. involucrata John Thomas Howell 1949-7-24 25675 Tulare Rock Creek 3291 Comment
  UCD137362  Lonicera japonica John Thomas Howell 1947-5-21 23190 Marin Tiburon. Comment
  CAS-BOT-BC200897  Lotus John Thomas Howell 1976-4-1 51523 Butte Table Mountain, 4 to 5 miles north of Oroville Comment
  RSA218003  Lotus corniculatus J. T. Howell 1956-7-1 31636 San Francisco Embarcadero and Front Street. Comment
  CAS-BOT-BC181941  Lotus purshianus var. purshianus John Thomas Howell 1934-6-30 12295 Modoc Duncan Horse Camp. 1355 Comment
  CDA5218  Ludwigia uruguayensis J. T. Howell 1945-7-1 21259 Marin Willow thicket, Tiburon. 0 Comment
  CAS-BOT-BC342563  Luina hypoleuca John Thomas Howell 1939-8-6 15104 Siskiyou Elk Mt., Marble Mts. Comment
  GH404271  Lupinus J. T. Howell 1976-4-1 51520 Unknown Table Mountain, 4-5 miles north of Oroville 152 Comment
  CAS-BOT-BC8443  Lupinus adsurgens var. adsurgens John Thomas Howell 1945-6-21 21193 Lake Bartlett Mountain: Ruppert Ridge to Bartlett Flat Comment
  UCR88061  Lupinus albicaulis J. T. Howell, R. C. Barneby 1954-6-12 29515 Mariposa Sierra Nevada Mtns, Eight mi. from Bagby on Coulterville Road. 515 Comment
  CAS-BOT-BC196409  Lupinus arboreus John Thomas Howell 1930-4-20 4740 Marin Pt. Reyes Comment
  CAS-BOT-BC182194  Lupinus argenteus John Thomas Howell 1934-6-15 12183 Modoc Alturas. Comment
  CAS-BOT-BC196576  Lupinus argenteus var. meionanthus John Thomas Howell 1943-7-20 18600 Nevada Castle Peak Comment
  SD113684  Lupinus bicolor Darley F. Howe 1955-6-12 2492 San Diego Meadow below Cuyamaca Lake Comment
  SD43600  Lupinus bicolor Darley F. Howe 1948-5-22 Placer Placer County 609 Comment
  SD43619  Lupinus bicolor Darley F. Howe 1948-5-22 1862 Nevada Nevada County Comment
  CAS-BOT-BC196777  Lupinus breweri var. bryoides John Thomas Howell 1950-7-22 27222 Tulare Summit ridge, Olancha Peak 3698 Comment
  CAS-BOT-BC215448  Lupinus cervinus John Thomas Howell 1955-5-17 30164 Monterey N slope of Junipero Serra Peak, Santa Lucia Mountains 1524 Comment
  RSA224319  Lupinus chamissonis J. T. Howell 1957-5-28 32479 San Francisco West side of Lone Mountain. Comment
  CAS-BOT-BC215101  Lupinus croceus John Thomas Howell 1937-7-1 13314 Siskiyou S Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC215200  Lupinus croceus John Thomas Howell 1937-7-29 13667 Siskiyou Scott Mountain between Trinity and Siskiyou counties Comment
  CAS-BOT-BC215410  Lupinus dalesiae John Thomas Howell; Gordon H. True 1967-6-12 42587 Plumas N side of American Valley near Quincy 1036 Comment
  SEINET8136124 Image available Lupinus densiflorus J. T. Howell 1935-1 12625 Unknown Comment
  POM203629  Lupinus densiflorus var. lacteus J. T. Howell 1933-4-22 11066 San Benito Between Paicines and Pinnacles P.O. Comment
  GH369006  Lupinus excubitus var. austromontanus J. T. Howell 1971-6-15 47855 Unknown 0.3 mile from Lightners Flat on road from Mt. Breckenridge to Havilah 1706 Comment
  CAS-BOT-BC205464  Lupinus excubitus var. excubitus John Thomas Howell; Gordon H. True 1967-5-29 42283 Inyo 1/3 mile east of head of Nine Mile [Ninemile] Canyon 1828 Comment
  CAS-BOT-BC216772  Lupinus excubitus var. excubitus John Thomas Howell 1930-5-13 5015 Kern 5 miles W of summit of Walker Pass Comment
  SDSU4985  Lupinus lapidicola D. F. Howe 1972-7-4 4869 Siskiyou Ranger Peak road, stoney hilltop just south of Del Norte, marker near Youngs Valley. 1737 Comment
  SD113409  Lupinus latifolius var. parishii Darley F. Howe 1935-6-16 241 San Diego Japatul Comment
  SEINET12901015 Image available Lupinus microcarpus J. T. Howell 1933-1 11004 Unknown Comment
  SD98844  Lupinus microcarpus var. densiflorus Darley F. Howe 1976-5-20 4897 Ventura North of Ojai on Hwy 33, 25.6 miles beyond the entrance to Los Padres National Forest. (see note) 1402 Comment
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Dec 28 2006
  SD113394  Lupinus microcarpus var. microcarpus Darley F. Howe 1964-4-14 1430 San Diego Dubber Comment
  UC1177478  Lupinus nanus John Thomas Howell 1944-6-4 19552 Marin w Inverness (Inverness Ridge); Inverness Ridge Comment
  SDSU5021  Lupinus nanus D. F. Howe 1964-5-17 3769 Kern Caliente. 335 Comment
  JEPS33695  Lupinus stiversii John Thomas Howell 1923-6-7 32 Mariposa Wawona 1219 Comment
  RSA34297  Luzula J. Wendell Howe 1934-3-10 1268 Unknown Near Arcata. Comment
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Jun 10 2012
  CAS-BOT-BC436573  Luzula cascadensis John Thomas Howell 1943-8-3 18983 Glenn Plaskett Meadows 1828 Comment
  CAS-BOT-BC441256  Luzula macrantha John Thomas Howell 1961-6-21 36634 Plumas Sierra Nevada: Greenville 1097 Comment
  CAS-BOT-BC441308  Luzula macrantha John Thomas Howell 1953-5-25 29036 Tuolumne Twain Harte 1127 Comment
  RSA34917  Machaeranthera canescens D. F. Howe 1945-9-22 s.n. Inyo Pig Pine Inyo County Comment
  CAS-BOT-BC343654  Madia elegans John Thomas Howell; Gordon H. True 1971-6-17 48106 Kern Bodfish Grove of Piute cypress, 2.4 mi. e. of Bodfish Gap 1524 Comment
  CAS-BOT-BC343740  Madia elegans John Thomas Howell 1924-7-10 456 Mariposa Wawona 1219 Comment
  CAS-BOT-BC343883  Madia elegans John Thomas Howell 1929-10-12 4462 San Luis Obispo Atascadero Creek, 4.3 miles w. of Atascadero Comment
  CAS-BOT-BC343918  Madia elegans John Thomas Howell 1926-10-9 2221 San Mateo Between Crystal Spring Lakes and San Mateo Comment
  CAS-BOT-BC344177  Madia elegans John Thomas Howell; Gordon H. True 1966-7-11 41681 Tulare Poison Meaow, Kern Plateau 2286 Comment
  CAS-BOT-BC344504  Madia exigua John Thomas Howell 1931-4-13 6358 Santa Barbara Ravenswood, Santa Cruz Island Comment
  CAS-BOT-BC343035  Madia gracilis John Thomas Howell 1962-7-10 38474 Kern Shirley Meadows, Greenhorn Mountains 2011 Comment
  CAS-BOT-BC343499  Madia gracilis John Thomas Howell 1962-5-22 37304 Tulare Kern River Canyon above Roads End 1097 Comment
  CAS-BOT-BC343562  Madia gracilis John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-22 54070 Yuba 1.4 miles southwest of Bullards Bar Dam on road to Challenge 609 Comment
  UC517457  Madia gracilis John Thomas Howell 1933-5-14 11266 Contra Costa hills e St. Mary's College Comment
  SDSU4746  Madia sativa D. F. Howe 1962-7-30 3372 Mendocino 1.8 miles north of Pt. Arena on #1. Comment
  CAS-BOT-BC345160  Madia sativa John Thomas Howell 1931-5-25 6548 Santa Barbara Mission Ridge, Santa Barbara Comment
  CAS-BOT-BC345258  Madia sativa John Thomas Howell 1932-9-18 10765 Sonoma South base of Mt. Hood on Sonoma Creek Comment
  POM225355  Madia sativa J. T. Howell 1932-9-18 10765 Sonoma South base of Mt. Hood, on Sonoma Creek Comment
  POM204106  Maianthemum racemosum subsp. amplexicaule J. T. Howell 1934-6-11 11954 Modoc Parker Creek, Warner Mts. 1585 Comment
  CAS-BOT-BC512872  Maianthemum stellatum John Thomas Howell 1944-8-9 20189 Tuolumne Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC204043  Malacothamnus fremontii John Thomas Howell 1971-6-25 48114 Stanislaus On Interstate Hwy. 5 at Black Gulch Creek, 2.5 miles west of Patterson Comment
  CAS-BOT-BC204117  Malacothamnus hallii John Thomas Howell; Thos. H. Kearney 1950-8-27 27424 Santa Clara Pacheco Pass road 4 miles west of summit Comment
  UC1347194  Malacothamnus hallii John Thomas Howell 1937-7-5 13098 Santa Clara in hills e Coyote; Metalf Road Comment
  RSA43315  Malacothamnus niveus J. T. Howell 1948-6-15 s.n. San Luis Obispo Gillis Canyon, SE of Shandon 457 Comment
  GH404940  Malacothamnus orbiculatus J. T. Howell & T. H. Kearney 1950-8-29 27434 Unknown Along road from Independence to Onion Valley 2133 Comment
  RSA0005492  Malacothamnus palmeri var. lucianus J. T. Howell 1955-7-8 30642 Monterey Arroyo Seco Road, 3 miles from Escondido Camp, Santa Lucia Mountains. 793 Comment
  CAS-BOT-BC345438  Malacothrix clevelandii John Thomas Howell 1953-6-14 29071 Monterey Hastings Reservation, Santa Lucia Mts. Comment
  CAS-BOT-BC347523  Malacothrix floccifera John Thomas Howell 1977-6-21 52382 Plumas Seneca 1097 Comment
  POM203303  Malacothrix floccifera J. T. Howell 1931-4-19 6461 Napa Conn Valley. Comment
  SD112634  Malacothrix glabrata Darley F. Howe 1948-5-3 1794 Kern i mile north of Rosamond 669 Comment
Read comments
Mar 17 2014
  SBBG30045  Malva nicaeensis J. T. Howell 1946-5-16 21900 San Francisco Van Ness Avenue at Fort Mason, San Francisco Comment
  RSA88563  Malva parviflora J. T. Howell 1951-6-27 27555 Plumas Johnsville. 1585 Comment
  UCD116690  Malva pseudolavatera John Thomas Howell 1962-4-25 37095 San Joaquin Vacant lots, Tracy. Comment
  SEINET6166089  Marsilea vestita subsp. vestita J. T. Howell 1962-9-21 38683 Kern Sierra Nevada, Kern River Canyon 427 Comment
  CAS-BOT-BC348244  Matricaria discoidea John Thomas Howell; Gordon H. True 1970-7-30 47148 Tulare Southwest end of Big Meadow just east of Cherry Hill Road. Kern Plateau 2377 Comment
  CAS-BOT-BC422661  Meconella californica John Thomas Howell 1946-4-14 21623 Marin Near Tomales Comment
  CDA4231  Medicago praecox T. Howell 1954-5-2 29188 Tehama Near Red Bluff. 0 Comment
  CAS-BOT-BC271146  Melica aristata John Thomas Howell 1958-7-22 33716 Fresno Simpson Meadow, Middle Fork of Kings River, Sierra Nevada 1828 Comment
  CAS-BOT-BC269322  Melica bulbosa John Thomas Howell 1948-7-26 25017 Tulare Bubbs Creek Canyon 3139 Comment
  CAS-BOT-BC271094  Melica bulbosa John Thomas Howell; Gordon H. True 1970-7-15 5575 Nevada Carpenter Ridge, Sagehen Creek drainage, ca. 7.5 miles west of Truckee - Sierraville Highway 2621 Comment
  CAS-BOT-BC282073  Melica fugax John Thomas Howell 1937-7-21 13155 Siskiyou S Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC282102  Melica fugax John Thomas Howell 1975-6-16 51154 Plumas 2 miles NW of Spring Garden 1173 Comment
  RSA201315  Melica fugax J. T. Howell 1960-7-18 35603 Plumas Drakesbad. Lassen Volcanic National Park. 1677 Comment
  CAS-BOT-BC282146  Melica geyeri John Thomas Howell 1947-5-18 23185 Marin Lagunitas Meadows at foot of Berry Trail Comment
  CAS-BOT-BC7405  Melica geyeri var. aristulata John Thomas Howell 1943-4-11 17906 Marin San Rafael Hills, Black Canyon Comment
  CAS-BOT-BC281450  Melica imperfecta John Thomas Howell; Gordon H. True 1969-5-13 45686 Kern Spanish Needle Creek road to Lamont Meadow 1463 Comment
  CAS-BOT-BC281451  Melica imperfecta John Thomas Howell; Gordon H. True 1969-5-13 45650 Kern Spanish Needle Creek road to Lamont Meadow 1280 Comment
  CAS-BOT-BC281147  Melica stricta John Thomas Howell 1951-7-17 17864 Tulare Mineral King and Vicinity. White Chief Trail 2895 Comment
  UCD88307  Melica stricta John Thomas Howell 1943-7-15 18373 Nevada West side of Donner Pass near Norden. 2133 Comment
  SEINET10599625  Melica stricta John Thomas Howell 1958-5-23 Howell 33222 Inyo Alabama Hills. 1463 Comment
  RSA400  Melilotus indicus J. T. Howell 1927-7-18 429 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  SD112196  Melinis repens subsp. repens Darley F. Howe 1950-8-27 2050 San Diego Below Murray Dam Comment
  POM225314  Melissa officinalis J. T. Howell 1932-9-18 10771 Sonoma Bed of slough draining Kenwood Marsh. Comment
  POM204456  Mentzelia affinis J. T. Howell 1933-4-22 11067 San Benito Between Paicines and Pinnacles P.O. Comment
  UC1177454  Mentzelia laevicaulis var. laevicaulis John Thomas Howell 1945-9-16 21488 Marin n San Rafael (along railroad) Comment
  CAS-BOT-BC179122  Mentzelia montana John Thomas Howell 1934-6-30 12263 Modoc Duncan Horse Camp. 1355 Comment
  SD129881  Mentzelia oreophila Melanie Howe, David K. Faulkner 1990-6-13 88 Inyo Surprise Canyon 900 Comment
  SD81267  Mentzelia tricuspis Darley F. Howe 1969-4-12 4569 San Bernardino 13 miles east of Goffs. 427 Comment
  CAS-BOT-BC170841  Mentzelia veatchiana John Thomas Howell; Alice Eastwood 1940-6-11 8002 Lassen Big Valley Comment
  CAS-BOT-BC170840  Mentzelia veatchiana John Thomas Howell 1960-6-6 35364 Fresno Kings Canyon 5.5 mi. w. of Cedar Grove - Sierra Nevada 1097 Comment
  SD114154  Mentzelia veatchiana Darley F. Howe 1961-4-26 3017 Inyo 3.0 miles east of west entrance to Inyo National Forest on Westgard Pass Road. 1981 Comment
  CAS-BOT-BC429118  Micranthes odontoloma John Thomas Howell 1947-8-5 23762 Inyo Fifth Lake, Big Pine Lakes 3352 Comment
  CAS-BOT-BC429240  Micranthes oregana John Thomas Howell 1960-7-23 35963 Plumas Lassen Volcanic National Park. Dream Lake, Drakesbad 1828 Comment
  CAS-BOT-BC429241  Micranthes oregana John Thomas Howell 1967-6-23 42714 Plumas Butterfly Valley 1066 Comment
  CAS-BOT-BC322598  Micropus amphibolus John Thomas Howell 1965-3-25 41033 Sonoma 3 miles southeast of Sonoma 76 Comment
  RSA201428  Micropus amphibolus J. T. Howell 1965-3-25 s.n. Sonoma 3 miles southeast of Sonoma 76 Comment
  CAS-BOT-BC348750  Microseris bigelovii J. T. Howell 1946-6-2 s.n. Marin Potrero Meadow, Mt. Tamalpais Comment
  CAS-BOT-BC348751  Microseris bigelovii J. T. Howell 1946-5-19 21910 Marin Meadows Club, Fairfax Hills Comment
  CAS-BOT-BC348787  Microseris campestris John Thomas Howell 1926-4-10 1800 A Alameda Arroyo Mocho 8 miles from Livermore Comment
  CAS-BOT-BC348823  Microseris campestris John Thomas Howell 1967-11-3 44030 A Tulare About 4.5 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC348959  Microseris douglasii subsp. douglasii John Thomas Howell 1963-6-22 39544 Monterey Priest Valley 685 Comment
  CAS-BOT-BC348968  Microseris douglasii subsp. douglasii John Thomas Howell 1931-4-19 6449 Napa Conn Valley Comment
  CAS-BOT-BC349171  Microseris elegans John Thomas Howell 1954-5-17 29708 El Dorado 1 mile southwest of Garden Valley 609 Comment
  CAS-BOT-BC349271  Microseris nutans John Thomas Howell 1925-7-2 1322 El Dorado Trail to Desolation Valley above Glen Alpine, Lake Tahoe region Comment
  GH365928  Mimulus aurantiacus T. J. Howell 1884-05-01 - 1884-06-01 Unknown Smith River Comment
  RSA118023  Mimulus aurantiacus var. grandiflorus J. T. Howell 1955-5-18 30180 Monterey West of saddle between Junipero Serra and pinyon peaks. 1433 Comment
  RSA88391  Mimulus nanus var. mephiticus J. T. Howell 1951-6-29 27753 Plumas Feather River Canyon 549 Comment
  RSA1317  Mimulus pilosus J. T. Howell 1928-7-9 1071 Riverside Head of San Juan Canyon. Elsinore Mountains 793 Comment
  JEPS28121  Mimulus suksdorfii John Thomas Howell 1962-6-19 37870 Plumas 5.8 mi e Beckwourth; Sierra Nevada 1493 Comment
  CAS-BOT-BC388680  Minuartia douglasii John Thomas Howell 1939-5-14 s.n. Marin Near Collier Spring, Mt. Tamalpais Comment
  CAS-BOT-BC388681  Minuartia douglasii John Thomas Howell 1940-5-26 15529 Marin Little Carson Falls Comment
  CAS-BOT-BC388924  Minuartia douglasii John Thomas Howell 1954-6-6 29977 Tuolumne Twain Harte 1127 Comment
  CAS-BOT-BC181578  Minuartia nuttallii var. gracilis John Thomas Howell; Alice Eastwood 1939-7-20 7555 Mono Sonora Pass Comment
  CAS-BOT-BC181602  Minuartia nuttallii var. gracilis John Thomas Howell 1958-8-1 34157 Fresno Ridge north of Dougherty Meadow - Sierra Nevada 3048 Comment
  CAS-BOT-BC384016  Mirabilis jalapa John Thomas Howell 1956-7-15 31688 San Francisco San Francisco. Waterfront Street near Mission Rock Terminal Comment
  CAS-BOT-BC220072  Monardella breweri subsp. lanceolata John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-15 53759 Tulare Upper part of Brush Creek Canyon on Cherry Hill Road, Kern Plateau 1767 Comment
  CAS-BOT-BC221679  Monardella douglasii John Thomas Howell 1942-7-19 17049 Contra Costa NE. of Deer Flat, Mt. Diablo Comment
  CAS-BOT-BC220112  Monardella exilis John Thomas Howell; Gordon H. True 1969-5-13 45716 Kern 7 miles east of Onyx on Walker Pass highway 1021 Comment
  CAS-BOT-BC220124  Monardella exilis John Thomas Howell; Gordon H. True 1969-5-13 45716 Kern 7 miles east of Onyx on Walker Pass highway 1021 Comment
  SD113345  Monardella hypoleuca subsp. lanata Darley F. Howe 1954-7-18 2421 San Diego East base of Mt. Woodson. Comment
  UCR143079  Monardella linoides subsp. sierrae J. T. Howell 1947-8-16 24150 Inyo Sierra Nevada Mtns., Big Pine Lakes Trail 2744 Comment
  RSA0005496  Monardella linoides subsp. sierrae J. T. Howell 1947-8-16 24150 Inyo Big Pine Lakes Trail. 2622 Comment
  SDSU7223  Monardella nana D. F. Howe 1963-7-13 3635 Fresno Comment
  CAS-BOT-BC213929  Monardella odoratissima subsp. pallida John Thomas Howell 1970-9-23 47344 Kern Near Tiger Flat, east side of Sunday Peak, Greenhorn Mountains, Sierra Nevada 1981 Comment
  CAS-BOT-BC220402  Monardella purpurea John Thomas Howell 1946-8-11 22847 Marin Between Mt. Theater & Barths Retreat, Mt. Tamalpais Comment
  SD56725  Monardella sinuata subsp. sinuata Darley F. Howe 1963-6-29 3562 Santa Barbara 1.3 miles from Highway 1 on Vandenberg Air Base Road. 91 Comment
  SD98840  Monardella sinuata subsp. sinuata Darley F. Howe 1976-6-2 4924 Ventura On Las Posas Road, 0.5 mile north of Santa Rosa Valley Blvd. 213 Comment
Read comments
May 5 2015
  POM180780  Monardella villosa subsp. villosa J. T. Howell 1930-7-13 5349 Napa On the edge of the Crater Country Comment
  CAS-BOT-BC220691  Monardella viridis John Thomas Howell 1930-7-13 5360 Napa On the edge of the Crater Country Comment
  CAS-BOT-BC220695  Monardella viridis John Thomas Howell 1937-7-4 13060 Napa Wooden Valley Grade Comment
  CDA23451  Monolepis spathulata J. T. Howell, G. H. True 1967-9-19 43893 Tulare Kern Plateau, Sierra Nevada; Flood-plain of Kern River South Fork, Kennedy Meadows Campground. Comment
  UC710559  Monolepis spathulata John Thomas Howell 1944-8-9 20191 Tuolumne near Parson's Lodge (Tuolumne Meadows); Tuolumne Meadows Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC444777  Montia chamissoi John Thomas Howell 1950-7-15 26911 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC260598  Muhlenbergia filiformis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49495 Lassen Elysian Valley, W of Janesville 1325 Comment
  CAS-BOT-BC267006  Muhlenbergia filiformis John Thomas Howell 1959-9-22 34869 Plumas Drakesbad 1737 Comment
  SEINET196539 Image available Muhlenbergia filiformis John T. Howell 1949-7-23 25665 Tulare Rock Creek 3200 Comment
  UCD86661  Muhlenbergia filiformis John Thomas Howell 1960-7-18 35581 Plumas Lassen Volcanic National Park. Drakesbad. 1676 Comment
  CAS-BOT-BC275282  Muhlenbergia microsperma John Thomas Howell 1928-2-9 3339 Los Angeles On trail between Sierra Madre and Santa Anita Canon, San Gabriel Mountains Comment
  CAS-BOT-BC275182  Muhlenbergia montana John Thomas Howell 1937-7-25 13442 Siskiyou Caribou Basin, Salmon-Trinity Alps 2286 Comment
  CAS-BOT-BC274953  Muhlenbergia richardsonis John Thomas Howell 1940-8-2 15882 Tulare Slope N of Reflection Lake 3352 Comment
  CAS-BOT-BC274894  Muhlenbergia rigens John Thomas Howell 1962-5-22 37340 Tulare Johnsondale 1423 Comment
  CAS-BOT-BC392274  Myosurus apetalus John Thomas Howell 1950-7-15 26917 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  UCD96306  Myosurus minimus John Thomas Howell 1971-3-23 47585 Merced northeast of Gustine on road to Merced. 30 Comment
  SEINET199915  Nassella lepida John Thomas Howell 1945-5-27 20881 Marin East of Mountain Thetre Mt. Tamalpais Comment
  CAS-BOT-BC260122  Nassella pulchra John Thomas Howell 1944-4-30 19418 Alameda Oakland Hills above Mills College Comment
  CAS-BOT-BC260166  Nassella pulchra John Thomas Howell 1938-5-22 13794 Marin San Anselmo Canyon Comment
  GH361642  Nassella pulchra J. T. Howell 1946-5-16 21849 Unknown Southeast side, Angel Island Comment
  UC1106100  Nassella pulchra John Thomas Howell 1946-5-16 21849 Marin se side Angel Island Comment
  CAS-BOT-BC198016  Navarretia breweri John Thomas Howell 1934-6-12 11988 Modoc 9 mi. S of Davis Creek. Comment
  UC1332135  Navarretia divaricata John Thomas Howell 1937-7-27 13572 Siskiyou near Big Flat; Salmon River 1524 Comment
  SD75823  Navarretia intertexta subsp. propinqua Darley F. Howe 1969-8-4 4659 Mono Sonora Pass Road, east of divide 2438 Comment
  CAS-BOT-BC232659  Navarretia pubescens John Thomas Howell 1931-6-8 6676 Mariposa 5 miles from Mariposa on road to Briceburg Comment
  CAS-BOT-BC232744  Navarretia sinistra subsp. pinnatisecta John Thomas Howell 1937-7-30 13697 Trinity 7 miles from Trinity Center on road to Minersville Comment
  CAS-BOT-BC230582  Nemophila parviflora var. quercifolia John Thomas Howell; Gordon H. True 1971-6-15 47844 Kern 1 mile from Lightners Flat on road from Mount Breckenridge to Havilah 1676 Comment
  SD113480  Nemophila pedunculata Darley F. Howe 1948-5-22 Nevada Comment
  SD60979  Nemophila pulchella var. gracilis Darley F. Howe 1964-5-19 3788 Fresno Entrance to Sierra National forest on Highway 168. 762 Comment
  CAS-BOT-BC71176  Notholaena standleyi John Thomas Howell 1927-11-25 3228 San Diego n. Borrego Valley, w. Colorado Desert 304 Comment
  SDSU655  Nuphar lutea subsp. polysepala D. F. Howe 1972-6-27 4840 Sonoma Duncan Mills Pond Comment
  SD114118  Oenothera californica subsp. avita Darley F. Howe 1941-6-19 1127 San Diego Jacumba Comment
  RSA28224  Oreobolopsis clementis J. T. Howell 1951-7-21 28080 Tulare White Chief region; Mineral King and vicinity. 3049 Comment
  RSA44392  Oreobolopsis clementis J. T. Howell 1938-8-13 14572 Mariposa Snow Flat Comment
  RSA458962  Oreonana clementis J. T. Howell 1948-7-20 24795 Fresno Mt. Gould. Fresno-Inyo County line. 3659 Comment
  UC702999  Oreostemma alpigenum var. andersonii J. Thomas Howell 1941-8-1 16653 Madera near Garnet Lake 2956 Comment
  CAS-BOT-BC327729  Oreostemma elatum John Thomas Howell 1924-8-19 618 Plumas Butterfly Valley near Quincy Comment
  CAS-BOT-BC327730  Oreostemma peirsonii John Thomas Howell 1948-7-28 25124 Tulare Center Basin 3657 Comment
  CAS-BOT-BC327731  Oreostemma peirsonii John Thomas Howell 1948-7-26 25063 Tulare Center Basin 3413 Comment
  CAS-BOT-BC327735  Oreostemma peirsonii John Thomas Howell 1949-7-20 25529 Tulare Rock Creek 3291 Comment
  CAS-BOT-BC499731  Orobanche californica subsp. feudgei John Thomas Howell 1976-5-18 51750 Kern Sierra Nevada, Greenhorn Mountains. 5.5 mi from Wofford, along old road from Alta Sierra to Wofford Heights Comment
  CAS-BOT-BC499866  Orobanche fasciculata John Thomas Howell 1958-5-25 33363 Inyo Sierra Nevada: Carroll Creek 1676 Comment
  CAS-BOT-BC499925  Orobanche fasciculata John Thomas Howell; R. C. Barneby 1954-5-12 29503 Mariposa Sierra Nevada: near top of Bagby Grade 579 Comment
  CAS-BOT-BC500251  Orobanche uniflora subsp. occidentalis John Thomas Howell 1940-4-21 15401 Contra Costa Pine Canyon, Mt. Diablo Comment
  CAS-BOT-BC500255  Orobanche uniflora subsp. occidentalis John Thomas Howell 1925-7-6 1393 El Dorado Trail to top of Mt. Tallac, Lake Tahoe Region Comment
  CAS-BOT-BC500259  Orobanche uniflora subsp. occidentalis John Thomas Howell; R. C. Barneby 1954-5-10 29367 Fresno Sierra Nevada, between Mountain Lakes and Auberry 1066 Comment
  CAS-BOT-BC355727  Orochaenactis thysanocarpha John Thomas Howell 1950-7-18 27063 Tulare Bakeoven Meadows 2468 Comment
  UC643406  Oxypolis occidentalis John Thomas Howell 1940-7-28 15660 Fresno near Charlotte Creek; Bubbs Creek Comment
  SD77846  Oxystylis lutea Darley F. Howe 1970-8-23 Inyo Tecopa Hot Springs. 399 Comment
  UC1042585  Oxytheca dendroidea subsp. dendroidea John Thomas Howell 1950-7-27 27407 Mono 2.5 mi n Bridgeport; Sierra Nevada 1965 Comment
  RSA190  Oxytheca trilobata J. T. Howell 1927-8-7 619 San Diego Between Campo and Buckman Springs. 915 Comment
  SD88441  Packera bolanderi Darley F. Howe 1972-5-8 4833 Del Norte 2.8 miles north of Crescent City Comment
  SDSU472  Packera cana D. F. Howe 1971-8-25 4776 Inyo Near South Lake, Inyo National Forest west of Bishop. 3048 Comment
  CAS-BOT-BC316893  Packera eurycephala var. lewisrosei John Thomas Howell 1955-6-15 30507 Butte West branch of North Fork of Feather river 182 Comment
  SDSU503  Packera multilobata D. F. Howe 1978-6-2 5030 San Bernardino New York Mts. 1554 Comment
  CAS-BOT-BC121004  Paeonia brownii J. T. Howell 1962-6-19 37849 Plumas The Buttes, near Sierra Valley. 1493 Comment
  SD128761  Palafoxia arida var. arida Darley F. Howe 1980-4-13 Imperial 9 miles east of Holtville on Highway 8 Comment
  CAS-BOT-BC253748  Panicum capillare John Thomas Howell; et al. 1967-7-10 2191 Plumas Butterfly Botanical Area and Vicinity. Mouth of Butterfly Creek 883 Comment
  CAS-BOT-BC253895  Panicum rigidulum John Thomas Howell 1961-9-22 36714 Butte Bank of Feather River, Oroville 53 Comment
  CDA2143  Panicum rigidulum J. T. Howell 1961-9-22 36714 Butte Bank of Feather River, Oroville. Comment
  CAS-BOT-BC253899  Panicum urvilleanum John Thomas Howell 1928-3-11 3442 Riverside 6 miles SE of Garnet Station, Coachella Valley, Colorado Desert 152 Comment
  RSA32280  Papaver californicum J. T. Howell 1946-5-30 21962 Marin Little Carson Canyon. Comment
  POM230334  Parentucellia viscosa J. T. Howell 1937-7-31 13719 Humboldt 3 miles west of Korbel, Comment
  CAS-BOT-BC413446  Parietaria judaica John Thomas Howell 1973-4-19 49144 Monterey Pacific Grove Comment
  CAS-BOT-BC413454  Parietaria judaica John Thomas Howell 1977-4-4 52362 Alameda Shattuck Ave., Berkeley Comment
  CAS-BOT-BC175628  Parnassia palustris John Thomas Howell 1940-7-31 15778 Tulare East Lake 2926 Comment
  RSA127247  Paspalum dilatatum J. T. Howell 1945-8-5 21364 Marin McKinnan's Landing near Stinson Beach Comment
  JEPS22383  Pectocarya penicillata John Thomas Howell 1928-3-20 3460 Los Angeles Vermont Canyon, Griffith Park Comment
  SD114708  Pectocarya recurvata Darley F. Howe 1939-4-15 638 San Diego Yaqui Pass Comment
  CAS-BOT-BC266631  Pedicularis John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54240 Plumas About 3 miles SE of Mount Hough on the road to Quincy 1737 Comment
  SDSU10866  Pedicularis semibarbata D. F. Howe 1947-6-23 1625 San Bernardino Furnace Creek N of Holcomb Valley, San Bernardino Mtns. Comment
  CAS-BOT-BC67733  Pellaea andromedifolia John Thomas Howell 1956-12-4 31996 Mariposa Sierra Nevada - Merced River Canyon, 2.6 miles above Briceburg Comment
  HSC1060  Pellaea andromedifolia J. Wendell Howe 1930-3-30 Alameda Oakland Hills Comment
  RSA30137  Pellaea breweri J. T. Howell 1951-7-21 28063 Tulare Marble, White Chief region; Mineral King and Vicinity. 2896 Comment
  CAS-BOT-BC71508  Pellaea mucronata var. californica John Thomas Howell 1964-10-23 40982 Inyo Whitney Portal Road 2346 Comment
  NY572626  Penstemon caesius J. T. Howell 1958-7-21 33709 Fresno "Repack Flat", on trail from Dougherty Meadow to Simpson Meadow. 2286.0 Comment
  SD113662  Penstemon centranthifolius Darley F. Howe April 51 Unknown Claremont Comment
Read comments
Jun 26 2012
  NY590166  Penstemon davidsonii var. davidsonii J. T. Howell 1940-8-1 16054 Tulare Between Reflection Lake and Harrison Pass. Comment
  SDSU10936  Penstemon deustus var. pedicellatus D. F. Howe 1964-8-4 3932 Siskiyou Probably Modoc or Shasta National Forest, 9 miles from entrance to Lava Bed National Monument. 2042 Comment
  NY600736  Penstemon gracilentus J. T. Howell 1970-7-14 5559 Sierra Verdi Peak Road, ca. 3 miles from intersection with Dog Valley-Stampede Dam Road. 2347.0 Comment
  POM304499  Penstemon heterodoxus var. cephalophorus J. T. Howell 1942-8-5 17725 Tulare Kaweah Meadows, Chagoopa Plateau. Comment
  CAS-BOT-BC239115  Penstemon incertus John Thomas Howell; Gordon H. True 1967-5-30 42420 Inyo Ninemile Canyon 1432 Comment
  CAS-BOT-BC239119  Penstemon incertus John Thomas Howell 1950-7-12 26655 Inyo Sage Flat to Olancha Pass 2133 Comment
  RSA299181  Penstemon laetus J. T. Howell 1976-5-19 51764 Kern Digger pine-Douglas oak woodland between Isabella Dam and Keysville. Greenhorn Mts. 823 Comment
  CAS-BOT-BC239400  Penstemon newberryi var. berryi John Thomas Howell 1940-8-1 15798 Tulare Between Reflection Lake and Harrison Pass Comment
  CAS-BOT-BC239401  Penstemon newberryi var. berryi John Thomas Howell 1940-8-1 15798 Tulare Between Reflection Lake and Harrison Pass Comment
  POM203064B  Penstemon roezlii J. T. Howell 1934-6-30 12269 Modoc Duncan Horse Camp. Comment
  SDSU10980  Penstemon speciosus D. F. Howe 1958-7-29 2674 Mono 10 miles W of #395 on Sonora Pass Road. 2743 Comment
  CAS-BOT-BC71714  Pentagramma triangularis subsp. triangularis John Thomas Howell 1956-5-6 31333 San Francisco Sierra & 22nd streets, San Francisco Comment
  CAS-BOT-BC15714  Perideridia oregana John Thomas Howell 1934-6-30 12287 Modoc Duncan Horse Camp. 1355 Comment
  CAS-BOT-BC222777  Perideridia parishii John Thomas Howell; Gordon H. True 1970-7-30 47208 Tulare Along Salmon Creek at north end of Big Meadow. Kern Plateau 2377 Comment
  CAS-BOT-BC222782  Perideridia parishii John Thomas Howell 1969-8-26 45967 Tulare Mineral King 2377 Comment
  CAS-BOT-BC413690  Persicaria hydropiper John Thomas Howell 1954-9-6 30086 Calaveras 3 miles se. of Angels Camp Comment
  CAS-BOT-BC413785  Persicaria lapathifolia John Thomas Howell 1931-9-29 8124 San Francisco Mountain Lake, Presidio, San Francisco Comment
  SEINET5536761  Phacelia brachyloba J. T. Howell 1930-5-10 4818 San Diego 10 miles north of Warners Hot Springs Comment
  RSA26544  Phacelia californica J. T. Howell 1930-7-20 5384 Marin Rocky slope of Mt. Tamalpais on south-east side. Comment
  RSA26566  Phacelia californica J. T. Howell 1930-7-27 5403 Sonoma One mile north of Fort Ross. Comment
  RSA74163  Phacelia ciliata J. T. Howell 1929-4-25 4202 Merced Two miles northeast of Planada. Comment
  POM399066  Phacelia divaricata var. congdonii J. T. Howell 1930-5-14 5101 Kern West slope of Greenhorn Range on road from Kernville to Glenville 1372 Comment
  CDA40421  Phacelia hastata var. compacta J. T. Howell 1941-7-31 16590 Madera Agnew Pass. 0 Comment
  SBBG64997  Phacelia insularis var. continentis J. T. Howell 1930-4-20 4732 Marin Point Reyes Comment
  CAS-BOT-BC145043  Phacelia keckii John Thomas Howell 1931-5-30 6611 Riverside Santiago Peak, Santa Ana Mts. 1219 Comment
  POM203927  Phacelia malvifolia J. T. Howell 1931-5-21 6487 Monterey Gibson Canyon, Carmel Highlands. Comment
  POM298991  Phacelia nemoralis subsp. nemoralis J. T. Howell 1930-6-15 5299 Alameda Rocky summit of Little Grizzley, Berkeley Hills Comment
  RSA596116  Phacelia novenmillensis J. T. Howell, Gordon H. True 1971-7-13 48371 Kern Southwest of Pine flat on rim of Kern Plateu Comment
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Mar 3 2019
  SD112826  Phacelia parryi Darley F. Howe 1952-5-4 2202 Ventura Santa Monica Mountains: Little Sycamore Canyon. 305 Comment
  CAS-BOT-BC27134  Phacelia peirsoniana John Thomas Howell 1938-8-7 14353 Mono near Little Round Valley Comment
  RSA88077  Phacelia purpusii J. T. Howell 1951-7-22 28146 Tulare 1.5 miles E of Slapjack Creek, Sequoia Park, on road to Mineral King. 1738 Comment
  CAS-BOT-BC144974  Phacelia ramosissima var. austrolitoralis John Thomas Howell 1927-7-24 2825 Orange Floor of Claymine Canyon, northern Santa Ana Mts. 152 Comment
  CAS-BOT-BC154302  Phacelia ramosissima var. eremophila John Thomas Howell 1964-8-10 40932 Alpine Rocky knoll about 0.5 mile southwest of Monitor Pass 2514 Comment
  SD53096  Phacelia ramosissima var. montereyensis Darley F. Howe 1962-7-22 3343 San Luis Obispo Near Oso Flaco Lake in sand dunes. Comment
  SBBG29809  Phacelia rattanii J. T. Howell 1944-6-11 Santa Cruz 1.5 mi N of Felton Comment
  SD51413  Phacelia vallis-mortae Darley F. Howe 1961-6-18 3034 Inyo White Mts., about 2 miles north of Westgard Pass. 2438 Comment
  CAS-BOT-BC250618  Phalaris minor John Thomas Howell 1960-3-24 35152 Riverside La Quinta Comment
  SEINET10593167  Phalaris minor John Thomas Howell 1933-5-14 Howell 11234 Contra Costa St. Mary's College Comment
  CAS-BOT-BC250809  Phleum alpinum John Thomas Howell; Gordon H. True 1967-7-4 43032 Tulare Fish Creek about 3.5 miles south of Troy Meadow, Kern Plateau 2255 Comment
  RSA26252  Phleum alpinum J. T. Howell 1940-8-3 15949 Tulare East Lake. 2927 Comment
  CAS-BOT-BC250888  Phleum pratense John Thomas Howell 1947-8-16 24138 Inyo Big Pine Lakes Trail 2804 Comment
  SD102825  Phlox stansburyi D. F. Howe 1978-6-22 Mono Near Hwy 395 8.7 miles north of Lee Vining. 2377 Comment
  CAS-BOT-BC134915  Phoradendron bolleanum John Thomas Howell 1955-6-14 30443 Butte Magalia. Sierra Nevada 731 Comment
  SBBG50201  Phoradendron bolleanum J. T. Howell 1970-9-23 Kern near Tiger Flat, E side of Sunday Peak, Greenhorn Mtns 1981 Comment
  CAS-BOT-BC135161  Phoradendron juniperinum John Thomas Howell; Gordon H. True 1970-5-28 5365 Nevada Bear Valley on Highway 20, ca. 20 mi E of Nevada City. Sierra Nevada 1402 Comment
  CAS-BOT-BC58250  Phyllodoce breweri John Thomas Howell 1947-7-23 23553 Tulare Dollar Lake, San Bernardino Mts. 2865 Comment
  LA41254  Phyllodoce empetriformis John Thomas Howell; 1937-7-24 13396 Siskiyou Caribou Basin, Salmon-Trinity Alps 1981 Comment
  RSA691  Physalis philadelphica J. T. Howell 1927-7-28 513 Orange West side, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC140558  Physocarpus capitatus John Thomas Howell 1927-5-10 2381 Alameda Strawberry [Canon] Canyon, Berkeley Hills 182 Comment
  RSA0107087  Phytolacca americana D. F. Howe 1936-7-25 s.n. San Diego Chula Vista. Comment
  UCD98428  Phytolacca heterotepala John Thomas Howell 1959-8-28 34602 San Francisco Geary Street between Gough and Franklin streets, San Francisco. Comment
  CAS-BOT-BC73474  Picea breweriana John Thomas Howell 1939-8-2 14900 Siskiyou Spirit Lake, Marble Mts. 1828 Comment
  CAS-BOT-BC478168  Pinus albicaulis John Thomas Howell 1934-6-14 12109 Modoc Near Lost Lake, Warner Mountains 2438 Comment
  CAS-BOT-BC78326  Pinus attenuata John Thomas Howell 1937-7-27 13571 Siskiyou Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC78439  Pinus contorta subsp. murrayana John Thomas Howell 1960-8-20 36203 Tehama Morgan 1463 Comment
  CAS-BOT-BC78503  Pinus contorta subsp. murrayana John Thomas Howell 1950-7-18 27039 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC78837  Pinus monophylla John Thomas Howell 1958-7-30 34115 Fresno West of Simpson Meadow, Middle Fork of the Kings River 1798 Comment
  SD112165  Pinus quadrifolia Darley F. Howe 1939-5-23 838 San Diego Lookout Point Laguna Mountains. (IPB 5/07) Comment
  CAS-BOT-BC80024  Pinus sabiniana John Thomas Howell 1960-3-25 35162 Kern West side of Walker Pass 1432 Comment
  UC1177384  Piperia elegans John Thomas Howell 1946-8-23 22887 Marin Pierce Pt. road Point Reyes Peninsula Comment
  CAS-BOT-BC254403  Piptatherum miliaceum John Thomas Howell 1961-9-22 36763 Butte N Fork of Feather River, 10 miles from Oroville 121 Comment
  CAS-BOT-BC254424  Piptatherum miliaceum John Thomas Howell 1963-8-5 39972 Monterey Along railroad tracks, King City Comment
  CAS-BOT-BC228016  Plagiobothrys John Thomas Howell 1926-7-30 2163 Plumas Prattville 1371 Comment
  POM204149  Plagiobothrys greenei J. T. Howell 1934-3-27 11803 Sonoma Summit of Bennett Valley road from Glen Ellen to Santa Rosa Comment
  CAS-BOT-BC231050  Plagiobothrys hispidulus John Thomas Howell 1950-7-14 26822 Tulare Bakeoven Meadows, S Fork of Kern River 2468 Comment
  CAS-BOT-BC231051  Plagiobothrys hispidulus John Thomas Howell 1942-8-1 17521 Tulare Sky Parlor Meadow, Chagoopa Plateau Comment
  UCD120831  Plagiobothrys hispidulus John Thomas Howell 1960-7-19 35613 Plumas Drakesbad, Lassen Volcanic National Park. 1676 Comment
  CAS-BOT-BC230938  Plagiobothrys hispidulus John Thomas Howell 1943-7-16 18393 Nevada W side of Donner Pass near Norden 2133 Comment
  SD61055  Plagiobothrys hispidus D. F. Howe 1964-8-5 3941 Siskiyou 3.7 mi. so. Of no. entrance to Klamouth Nat. Forest on #97. 1584 Comment
  CAS-BOT-BC230604  Plagiobothrys torreyi John Thomas Howell; Gordon H. True 1967-7-4 42932 Tulare Kern Plateau. Troy Meadow 2377 Comment
  UC881362  Plagiobothrys undulatus John Thomas Howell 1937-6-6 13014 Sonoma Sebastopol Comment
  CAS-BOT-BC60817  Planodes virginica John Thomas Howell 1930-4-12 4684 San Joaquin 7 miles from Escalon on road to Stockton. Comment
  RSA201465  Plantago elongata subsp. pentasperma J. T. Howell 1965-4-27 41256 Merced 5 miles E of Los Banos. 30 Comment
  POM203259  Plantago erecta J. T. Howell 1931-4-2 6052 Napa Wooden Valley Grade 4 miles E of Napa. Comment
  POM215031  Plantago erecta J. T. Howell 1930-4-20 4721 Marin Point Reyes Peninsula, 5 miles from Inverness. Comment
  UCD124456  Plantago erecta John Thomas Howell 1963-6-22 39520 Monterey near summit of Mustang Grade east of Lorenzo Creek. Comment
  SD64364  Plantago indica Darley F. Howe 1966-8-27 Siskiyou 8.5 miles north of Weed on Highway 97. 1189 Comment
  JEPS39475  Plantago major John Thomas Howell 1963-6-21 39447 Monterey near ne limits Salinas; Salinas Comment
  POM259272  Plantago truncata subsp. firma J. T. Howell 1940-4-14 15396 Marin San Anselmo Creek Canyon. Comment
  RSA43361  Plectritis macrocera subsp. macrocera J. T. Howell 1948-4-26 24290 Santa Clara West side of Pacheco Pass near summit. Comment
  RSA40179  Poa J. T. Howell 1944-7-16 19813 Glenn Black Butte Comment
  UCD90355  Poa annua John Thomas Howell 1944-8-5 19932 Tuolumne Tuolumne Meadows, Soda Springs. Comment
  SD112920  Poa bolanderi Darley Howe 1947-5-31 1755 Kern Greenhorn Mts. 1981 Comment
  CAS-BOT-BC255003  Poa bulbosa Thomas Howell; T. C. Fuller; G. D. Barbe 1980-4-29 53402 Siskiyou Forest Mountain Summit, 6 miles SW of Yreka on road to Fort Jones 1249 Comment
  CAS-BOT-BC255034  Poa compressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49506 Lassen Elysian Valley, W of Janesville 1325 Comment
  UCD90945  Poa cusickii subsp. epilis John Thomas Howell 1944-8-3 19877 Mono Sonora Pass. 2926 Comment
  CAS-BOT-BC254246  Poa glauca subsp. rupicola John Thomas Howell 1947-8-11 23977 Inyo Inconsolable Range 3810 Comment
  CAS-BOT-BC246865  Poa nervosa John Thomas Howell 1943-7-26 18857 A Placer Between Sugar Bowl and Norden Comment
  SEINET10893570  Poa nevadensis John Thomas Howell 1962-6-18 Howell 37757 Plumas Sierra Valley near Beckwourth. Culm-ligule ca. 4 mm. 1487 Comment
  CAS-BOT-BC247306  Poa pratensis John Thomas Howell; Gordon H. True 1971-6-16 47973 Kern Claraville 1920 Comment
  CAS-BOT-BC255944  Poa pratensis John Thomas Howell 1945-6-19 21051 Lake Sawmill Flat, Bartlett Mountain 1219 Comment
  POM303608  Poa pratensis J. T. Howell 1943-8-3 18937 Glenn Plaskett Meadows. 1829 Comment
  SEINET196488 Image available Poa pratensis John Thomas Howell 1949-7-19 25492 Tulare Rock Creek, Sierra Nevada ,Tulare County 3200 Comment
  GH360849  Poa secunda J. T. Howell 1941-7-24 16425 Unknown Near Garnet Lake 2956 Comment
  RSA300149  Poa secunda J. T. Howell, Gordon H. True 1967-5-9 42233 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  SD102202  Poa secunda Darley F. Howe 1978-6-24 Alpine Along state highway 89, 10.8 miles southeast of Markleeville 2286 Comment
  CAS-BOT-BC236312  Poa secunda subsp. juncifolia John Thomas Howell 1950-7-18 27047 Tulare Bakeoven Meadows, around mineral springs, S Fork of Kern River 2468 Comment
  CAS-BOT-BC247083  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True 1970-7-28 47007 Tulare West side of Big Meadow just south of Pipe Spring, Kern Plateau 2377 Comment
  SEINET7294047 Image available Poa secunda subsp. juncifolia John Thomas Howell 1978-1 53355 Nevada 5 miles north of Truckee on road to Sierraville 1768 Comment
  CAS-BOT-BC236034  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True 1967-5-29 42271 Inyo 1/3 mile E of head of Nine Mile Canyon 1828 Comment
  CAS-BOT-BC242978  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50637 Plumas Headwaters of Indian Creek SE of Diamond Mountain 2164 Comment
  CAS-BOT-BC243312  Poa secunda subsp. secunda John Thomas Howell 1942-8-5 17719 Tulare Between Big Arroyo and Chagoopa Plateau Comment
  CAS-BOT-BC243334  Poa secunda subsp. secunda John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53818 Tulare Sherman Pass Road W of the pass, Kern Plateau 2438 Comment
  CAS-BOT-BC244501  Poa secunda subsp. secunda John Thomas Howell 1964-4-26 40437 Mariposa Just SE of Mariposa, on road to Morman Bar 594 Comment
  CAS-BOT-BC247607  Poa secunda subsp. secunda John Thomas Howell 1934-7-1 12342 Modoc Duncan Horse Camp. 1355 Comment
  CAS-BOT-BC247660  Poa secunda subsp. secunda John Thomas Howell 1934-6-11 11927 Modoc Parker Creek. 1584 Comment
  SD223160  Poa secunda subsp. secunda Darley F. Howe 1963-7-13 3644 Fresno 1.8 miles south of bridge east of Huntington Lake, Sierra National Forest 2316 Comment
  UCD91645  Poa secunda subsp. secunda John Thomas Howell 1943-7-21 18638 Placer Donner Pass to Mt. Lincoln. Comment
  CAS-BOT-BC243012  Poa secunda subsp. secunda John Thomas Howell 1933-4-22 11057 San Benito Between Paicines and Pinnacles Post Office Comment
  UC526154  Poa unilateralis John Thomas Howell 1933-4-12 10995 Marin Sausalito hills Sausalito Comment
  UCD52763  Podagrostis humilis John Thomas Howell 1960-7-23 35955 Plumas near Soda Springs, Drakesbad. 1676 Comment
  CAS-BOT-BC244342  Podagrostis humilis John Thomas Howell 1944-8-14 20472 Tuolumne Tuolumne Canyon above Glen Aulin Comment
  CAS-BOT-BC218387  Podistera nevadensis John Thomas Howell 1938-8-11 14542 Tuolumne Mt. Dana 3657 Comment
  UC1988913  Pogogyne douglasii John Thomas Howell 1929-8-4 4870 Napa three miles from Pope Valley Store on road to Pope Creek Canyon. Same locality as No. 4278 Comment
  RSA0022137  Pogogyne serpylloides J. T. Howell 1930-4-22 4747 Contra Costa Bald Peak Comment
  RSA0022163  Pogogyne serpylloides J. T. Howell 1953-5-8 28958 Monterey Carmel Valley Comment
  CAS-BOT-BC231350  Polemonium pulcherrimum John Thomas Howell 1939-8-9 15220 Siskiyou Ridge south of Marble Valley, Marble Mts. Comment
  CAS-BOT-BC231351  Polemonium pulcherrimum John Thomas Howell 1937-7-24 13377 Siskiyou Caribou Basin, Salmon-Trinity Alps 2286 Comment
  SD88469  Polygala californica Darley F. Howe 1972-6-30 Del Norte 4.5 miles south of Oregon State line on US 199 671 Comment
  CAS-BOT-BC413757  Polygonum argyrocoleon John Thomas Howell 1953-6-3 29057 San Mateo Bayshore Highway, Redwood City Comment
  CAS-BOT-BC414142  Polygonum aviculare subsp. aviculare John Thomas Howell; R. C. Barneby 1954-5-8 29200 Tulare Terra Bella 152 Comment
  CAS-BOT-BC414283  Polygonum aviculare subsp. depressum John Thomas Howell; Gordon H. True 1969-9-29 46303 Tulare Dry Lake about 5 miles south of Big Meadow on Cherry Hill Road. Kern Plateau 2316 Comment
  UCD100062  Polygonum aviculare subsp. depressum John Thomas Howell 1958-8-10 34266 Madera Sierra Nevada, Millow Meadow. 2103 Comment
  CAS-BOT-BC414358  Polygonum californicum John Thomas Howell 1955-6-12 30309 Tehama 8.5 miles south of Corning Comment
  CAS-BOT-BC414443  Polygonum douglasii John Thomas Howell 1958-7-23 33815 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC414698  Polygonum douglasii John Thomas Howell 1938-8-12 14565 Tuolumne Tuolumne Meadows Comment
  SDSU9662  Polygonum minimum D. F. Howe 1964-7-28 3882 Sierra 5.5 miles south of Gold Lkae Lodge, Tahoe National Forest. 1829 Comment
  SEINET12884070 Image available Polygonum minimum J. T. Howell 1944-1 20308 Unknown Comment
  POM299031  Polygonum patulum J. T. Howell 1933-10-22 1172 a Santa Clara Bayshore Hwy between Palo Alto and Sunnyvale. Comment
  CAS-BOT-BC419878  Polygonum polygaloides subsp. confertiflorum John Thomas Howell; Gordon H. True 1970-7-14 5570 A Nevada Road from Russel Valley to Prosser Dam ca. 2 miles south of county line 1950 Comment
  CAS-BOT-BC419965  Polygonum polygaloides subsp. kelloggii John Thomas Howell 1962-7-10 38504 Kern Shirley Meadows, Greenhorn Mountains 2011 Comment
  POM225313  Polygonum punctatum J. T. Howell 1932-9-18 10770 Sonoma Kenwood Marsh near Kenwood Comment
  CAS-BOT-BC420178  Polygonum sawatchense subsp. sawatchense John Thomas Howell 1946-7-14 22347 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC233139  Polypogon interruptus John Thomas Howell 1956-4-22 31257 San Francisco Near Fisherman's Wharf, San Francisco Comment
  CAS-BOT-BC233239  Polypogon maritimus John Thomas Howell 1945-6-24 21236 Marin Willow Meadows, Mount Tamalpais Comment
  CAS-BOT-BC233235  Polypogon maritimus John Thomas Howell 1955-6-14 30431 Shasta E of Whiskeytown Comment
  CAS-BOT-BC237461  Polypogon viridis John Thomas Howell 1959-9-26 35069 Plumas Near Soda Spring, Feather River Canyon 682 Comment
  RSA11  Polystichum imbricans subsp. curtum J. T. Howell 1927-8-2 571 Riverside Road to Hemet, Mt. San Jacinto. 1372 Comment
  CAS-BOT-BC72359  Polystichum imbricans subsp. imbricans John Thomas Howell 1959-9-26 35041 Plumas Slaty Rocks near Keddie 1005 Comment
  CAS-BOT-BC102351  Populus alba John Thomas Howell 1962-6-18 37828 Sierra Sattley 1524 Comment
  CAS-BOT-BC102780  Populus tremuloides John Thomas Howell; Gordon H. True 1966-7-11 41742 Tulare Horse Meadow, Kern Plateau 2255 Comment
  UCD110709  Populus tremuloides John Thomas Howell 1960-8-21 36302 Tehama Bluff Falls. 1981 Comment
  CDA42313  Porterella carnosula John Thomas Howell, Gordon H. True 1970-7-28 46995 Tulare Sierra Nevada; Kern Plateau; Big Meadow. Comment
  CAS-BOT-BC452152  Potamogeton diversifolius John Thomas Howell 1926-5-22 1990 Merced Bellvue [Bellevue] Ranch, 3 miles n. of Merced Comment
  CAS-BOT-BC453907  Potamogeton pectinatus John Thomas Howell 1929-10-5 4439 El Dorado Margin of Lake Tahoe, Tahoma Lodge, 2 miles n. of Meeks Bay. Comment
  CAS-BOT-BC453965  Potamogeton pectinatus John Thomas Howell 1944-8-4 19906 Mono Between Pickle Meadow and Hardy Station Comment
  CAS-BOT-BC143402  Potentilla John Thomas Howell 1976-7-19 51960 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA0084028  Potentilla John T. Howell 1951-7-17 27820 Tulare White Chief trail. Mineral King and vicinity. 2591 Comment
  CAS-BOT-BC141860  Potentilla anserina John Thomas Howell; Gordon H. True 1967-7-3 42852 Tulare Rockhouse Meadow - Kern Plateau, Sierra Nevada 1706 Comment
  CAS-BOT-BC141865  Potentilla anserina John Thomas Howell 1950-7-14 26814 Tulare Bakeoven Meadows, South Fork of Kern River, Sierra Nevada 2468 Comment
  CAS-BOT-BC143134  Potentilla breweri John Thomas Howell 1948-7-24 24969 Fresno Bullfrog Lake 3240 Comment
  CAS-BOT-BC143199  Potentilla breweri John Thomas Howell 1942-8-3 17603 Tulare Between Little Five Lakes and Kaweah Gap Comment
  RSA442244  Potentilla glandulosa subsp. pseudorupestris J. T. Howell 1947-8-9 23963 Inyo Seventh Lake. Big Pine Lakes. 3415 Comment
  CAS-BOT-BC141630  Potentilla gracilis var. elmeri John Thomas Howell 1925-7-2 1366 El Dorado Between Fallen Leaf Camp and Lake Tahoe Comment
  CAS-BOT-BC141639  Potentilla gracilis var. elmeri John Thomas Howell 1950-7-25 27336 Tulare South Fork of Kern River 2468 Comment
  CAS-BOT-BC158558  Potentilla pseudosericea John Thomas Howell 1947-8-11 24023 Inyo South end of Coyote Ridge 3657 Comment
  UCR66578  Potentilla pseudosericea J. T. Howell 1947-8-11 24023 Inyo Sierra Nevada Mtns., south end of Coyote Ridge 3659 Comment
  CAS-BOT-BC47639  Primula suffrutescens John Thomas Howell 1940-8-4 15983 Tulare Ouzel Basin 3200 Comment
  CAS-BOT-BC47642  Primula suffrutescens John Thomas Howell 1942-7-31 17460 Tulare Above timberline, Mt. Kaweah Comment
  CAS-BOT-BC516316  Prosartes hookeri John Thomas Howell 1944-7-17 19835 Glenn Canyon of Snow Basin Creek Comment
  SD51292  Prunus andersonii Darley F. Howe 1961-4-26 Inyo 1.6 miles from entrance to Inyo Nat. Forest on road to Westgard Pass. Comment
  CAS-BOT-BC158193  Prunus emarginata John Thomas Howell 1961-6-20 36537 Shasta On Chaos Crags Trail near Manzanita Lake 1889 Comment
  SD50999  Prunus fasciculata Darley F. Howe 1960-4-10 San Luis Obispo South of Morro Bay. Comment
  CAS-BOT-BC154736  Prunus virginiana var. demissa John Thomas Howell 1943-8-12 19302 Glenn Canyon of Snow Basin Creek Comment
  CAS-BOT-BC356316  Psathyrotes ramosissima John Thomas Howell 1928-4-3 3677 Inyo Bed of Furnace Creek Wash where it enters Death Valley. Alt. near sea level Comment
  CAS-BOT-BC162039  Pseudelymus saxicola John Thomas Howell 1952-6-14 28353 Siskiyou 7 miles east of Callahan on road to Gazelle. Comment
  CAS-BOT-BC356382  Pseudognaphalium beneolens John Thomas Howell 1960-7-20 35756 Plumas Lassen Volcanic National Park. Boiling Springs Lake 1798 Comment
  CAS-BOT-BC356510  Pseudognaphalium beneolens John Thomas Howell 1970-9-22 47292 Tulare Kern River Canyon, 3 miles south of Hospital Flat 853 Comment
  CAS-BOT-BC356515  Pseudognaphalium beneolens John Thomas Howell 1959-9-21 34737 Plumas Belden 701 Comment
  CAS-BOT-BC356519  Pseudognaphalium beneolens John Thomas Howell; Gordon H. True 1969-9-30 46380 Tulare Cherry Hill Road 4 miles from Burton Camp, canyon of Poison Meadow Creek. Kern Plateau 2194 Comment
  CAS-BOT-BC356511  Pseudognaphalium beneolens John Thomas Howell; Gordon H. True 1971-7-16 48629 Tulare Near Last Chance Creek, about 2 miles northwest of Johnsondale 2042 Comment
  CAS-BOT-BC357090  Pseudognaphalium luteoalbum John Thomas Howell 1943-6-29 18243 San Francisco Concert Valley, Golden Gate Park, San Francisco Comment
  CAS-BOT-BC357251  Pseudognaphalium microcephalum John Thomas Howell 1940-7-28 15629 Fresno Near Sphinx Creek, Bubbs Creek 1889 Comment
  CAS-BOT-BC357250  Pseudognaphalium microcephalum John Thomas Howell 1958-7-28 34046 Fresno Blue Canyon Creek east of Tehipite Valley, Middle Fork of the Kings River 1432 Comment
  CAS-BOT-BC357399  Pseudognaphalium microcephalum John Thomas Howell 1951-8-21 28240 Sierra 5 miles from Calpine on road to Blairsden 1524 Comment
  CAS-BOT-BC95226  Pseudostellaria jamesiana John Thomas Howell 1934-6-11 11959 Modoc Parker Creek, Warner Mts. 1584 Comment
  CAS-BOT-BC328198  Psilocarphus brevissimus var. multiflorus John Thomas Howell 1930-5-21 5193 Santa Clara 1 mile south of Morgan Hill Comment
  CAS-BOT-BC361997  Psilocarphus tenellus John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1967-7-10 2126 Plumas Butterfly Botanical Area and Vicinity 1127 Comment
  SDSU427  Psilostrophe cooperi D. F. Howe 1960-9-14 2957 San Bernardino 2 miles north of #466 on road to Kingston Mts. 1097 Comment
  SD50785  Psorothamnus arborescens var. minutifolius Darley F. Howe 1959-4-16 Kern 52.5 miles north of Mojave on road to Owens Valley. Comment
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Feb 5 2014
  SD51207  Psorothamnus emoryi var. emoryi Darley F. Howe 1960-7-13 San Bernardino 55 miles east of road going north of 29 palms, on road to Amboy 609 Comment
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Jul 1 2013
  UC990934  Psorothamnus schottii D. F. Howe 1952-4-27 Riverside 5 mi s of highway e Mecca (along all American Canal); , e of Mecca Comment
  POM203037  Ptelea baldwinii subsp. crenulata J. T. Howell 1934-4-8 11811 Contra Costa 7 miles from Clayton on road to Livermore. Comment
  CAS-BOT-BC72561  Pteridium aquilinum John Thomas Howell 1958-5-26 33463 Inyo Near Gray's Meadow 1767 Comment
  SDSU9684  Pterostegia drymarioides D. F. Howe 1964-5-19 3778 Fresno Near entrance to Sierra National Forest on #168. 762 Comment
  UCD91536  Puccinellia distans John Thomas Howell 1944-8-5 19925 Tuolumne Tuolumne Meadows, Soda Springs. Comment
  UCD91857  Puccinellia distans John Thomas Howell 1963-7-10 39681 Alpine Sierra Nevada. Grover Hot Springs. 1798 Comment
  CAS-BOT-BC460616  Pyrola aphylla John Thomas Howell 1940-5-12 15410 Marin Woods south of Lagunitas Comment
  CAS-BOT-BC460824  Pyrola aphylla John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54226 Plumas Sierra Nevada: abuot 5 miles SE of Mt. Hough on the road to Quincy 1584 Comment
  HSC17970  Pyrola asarifolia subsp. bracteata J. Wendell Howe 1930-6-28 Humboldt Kneeland Prairie, edge of Redwood Belt Comment
  CAS-BOT-BC462903  Pyrola picta John Thomas Howell 1960-8-19 36148 Tehama Lassen Volcanic National Park: Brokeoff Mt. Trail 2590 Comment
  CAS-BOT-BC362234  Pyrrocoma apargioides John Thomas Howell 1950-7-18 27052 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC94233  Quercus X eplingii John Thomas Howell 1946-5-19 21904 Marin near Camp Lilienthal, Fairfax Hills Comment
  CAS-BOT-BC94694  Quercus X howellii John Thomas Howell 1955-6-15 30493 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC104164  Quercus X morehus John Thomas Howell 1925-10-11 1503 Contra Costa Chaparral, Moraga Ridge, Oakland Hills Comment
  UC1177415  Quercus X subconvexa John Thomas Howell with John Tucker 1947-8-31 24175 Marin n of Alpine Lake (Ridgecrest Road) Comment
  UCD45129  Quercus agrifolia John Thomas Howell 1950-7-5 26638 Contra Costa Small tree, Nortonville, Contra Costa Co. Comment
  CAS-BOT-BC62392  Quercus chrysolepis John Thomas Howell 1927-7-9 2701 San Bernardino Whiskey Springs, Cushenbury Road, N ridge of San Bernardino Mts. 1652 Comment
  CAS-BOT-BC62717  Quercus chrysolepis John Thomas Howell 1965-4-26 41159 Madera 3 miles south of Oakhurst 914 Comment
  RSA155  Quercus chrysolepis J. T. Howell 1927-8-2 575 Riverside Road to Hemet, Mt. San Jacinto. 1372 Comment
  CAS-BOT-BC85937  Quercus douglasii John Thomas Howell 1927-8-23 3043 Napa On hills on N side of Chiles Valley, Napa Range 213 Comment
  CAS-BOT-BC86435  Quercus dumosa John Thomas Howell 1933-8-27 11647 Napa E of Chiles Valley on road to Winters, Napa Range Comment
  UCD45903  Quercus durata var. durata John Thomas Howell 1959-9-21 34789 Plumas Plumas Co. El. 2500 ft. 762 Comment
  CAS-BOT-BC94674  Quercus garryana John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-5-20 53503 Trinity One-eye Flat, about 1.7 miles N of Carrville, Trinity River Canyon 755 Comment
  UCD46166  Quercus garryana var. semota John Thomas Howell 1954-6-4 29917 Tuolumne Between Twain Harte and Stanislaus River bridge, Tuolumne County. Comment
  UCD56583  Quercus kelloggii John Thomas Howell 1976-7-14 51823 Plumas Sierra Nevada. American Valley near Quincy on road to Quincy Junction. 1036 Comment
  CAS-BOT-BC61621  Quercus lobata John Thomas Howell 1964-4-29 40677 Tuolumne at Tuolumne River bridge, 2.5 miles east of Jacksonville 198 Comment
  SDSU6990  Quercus turbinella D. F. Howe 1941-9-21 1247 San Diego Road between Boulevard and Campo. Comment
  A343547  Quercus vacciniifolia J. T. Howell 1937-7-26 13522 Unknown Caribou Basin, Salmon-Trinity Alps 1981 Comment
  CAS-BOT-BC134812  Quercus wislizeni John Thomas Howell 1931-4-13 6323 Santa Barbara Santa Cruz Island near West end Comment
  UCD47634  Quercus wislizeni John Thomas Howell; Gordon H. True 1967-9-18 43795 Tulare Tulare County.: 4.5 miles from Lamont Meadow on road to Long Valley, Kern Plateau, 1584 Comment
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Oct 23 2013
  A343744  Quercus wislizeni var. frutescens J. T. Howell 1927-8-2 2938 Unknown Top of control on road to Hemet, Mt. San Jacinto 1371 Comment
  RSA167  Quercus wislizeni var. frutescens J. T. Howell 1927-8-2 577 Riverside Road to Hemet, Mt. San Jacinto. 1372 Comment
  CAS-BOT-BC362413  Rafinesquia John Thomas Howell 1960-5-2 35257 Mariposa Near Coulterville 548 Comment
  SD113007  Rafinesquia californica Darley F. Howe 1937-5-8 500 San Diego Otay Mesa Comment
  CAS-BOT-BC362691  Raillardella argentea John Thomas Howell 1960-8-19 36156 Tehama Lassen Volcanic National Park. Brokeoff Mt. Trail 2682 Comment
  CAS-BOT-BC362785  Raillardella argentea John Thomas Howell 1950-7-22 27244 Tulare Summit ridge, Olancha Peak 3698 Comment
  CAS-BOT-BC362796  Raillardella argentea John Thomas Howell 1944-8-12 20347 Tuolumne Between Tioga Pass and Gaylor Lakes Comment
  RSA201483  Raillardiopsis muirii J. T. Howell 33960 Fresno Tehipite Valley, Middle Fork of the Kings River 1280 Comment
  CAS-BOT-BC379015  Ranunculus aquatilis var. diffusus John Thomas Howell 1931-9-27 8119 Mendocino Garcia River 3.5 mi north of Point Arena Comment
  CAS-BOT-BC378959  Ranunculus bonariensis John Thomas Howell 1930-4-13 4707 Calaveras 7.5 mi from San Andreas on road to Valley Springs Comment
  SD50737  Ranunculus californicus Darley F. Howe 1959-4-19 2712 Santa Barbara Meadow, San Rafael Mts. 1372 Comment
  SEINET12086619  Ranunculus occidentalis J. T. Howell 1934-1 12305 Modoc Duncan Horse Camp Comment
  SD149112  Rhamnus John Thomas Howell 1976-7-14 51824 Plumas American Valley near Qunicy on road to Qunicy Junction 1036 Comment
  POM180605  Rhamnus californica J. T. Howell 1930-10-25 5698 Modoc Deep shade on bank of Arroyo Seco river, Santa Lucia Mts Comment
  RSA518948  Rhamnus tomentella subsp. cuspidata J. T. Howell, G. H. True 1971-6-14 47682 Kern 3 mi. east of Glennville on Greenhorn Mountain rd. 1220 Comment
  CAS-BOT-BC58106  Rhododendron columbianum John Thomas Howell 1942-7-29 17363 Tulare Little Five Lakes Basin. Comment
  SDSU3417  Rhododendron macrophyllum D. F. Howe 1961-8-2 3120 Humboldt 7.7 miles east of Orick and Bald Mt. road. 610 Comment
  CAS-BOT-BC92459  Ribes aureum var. gracillimum John Thomas Howell 1963-6-22 39565 Monterey Priest Valley. Comment
  CAS-BOT-BC93007  Ribes californicum var. californicum John Thomas Howell 1930-3-30 4641 Santa Clara West side of Pacheco Pass. 304 Comment
  CAS-BOT-BC108751  Ribes cereum John Thomas Howell 1964-5-13 40708 Shasta Lava flow just north of Hat Creek P.O. Comment
  LA205416  Ribes cereum John Thomas Howell; 1928-5-26 3848 Ventura Mt. Pinos Comment
  UCR89359  Ribes cereum J. T. Howell, Barbara T. Menzies, Roberta Shockey 1978-6-28 53131 Alpine W of Ebbetts Peak 2713 Comment
  CAS-BOT-BC169132  Ribes inerme var. inerme John Thomas Howell; Gordon H. True 1971-7-14 48422 Tulare North Fork of Manter Cerek in Black oak belt, Kern Plateau - Sierra Nevada 2225 Comment
  A380415  Ribes marshallii J. T. Howell 1939-8-2 14876 Unknown Spirit Lake, Marble Mts. Comment
  CAS-BOT-BC212595  Ribes montigenum John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-28 53160 Alpine Western slope of Ebbetts Peak 2773 Comment
  GH380510  Ribes montigenum J. T. Howell, B. T. Menzies & R. Shockey 1978-6-28 53160 Unknown Western slope of Ebbetts Peak 2773 Comment
  CAS-BOT-BC186231  Ribes roezlii var. roezlii John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54239 Plumas About 3 miles southeast of Mt. Hough on road to Quincy 1737 Comment
  CAS-BOT-BC199012  Ribes roezlii var. roezlii John Thomas Howell; Gordon H. True 1971-6-16 48007 Kern 1.5 miles south of Piute Peak, Sierra Nevada 2316 Comment
  CAS-BOT-BC173877  Ribes velutinum John Thomas Howell 1958-5-27 33480 Inyo North Fork of Bishop Creek 2438 Comment
  POM194217  Ribes velutinum J. T. Howell 1928-5-26 3855 Ventura Chula Vista Camp, Mt. Pinos, Ventura County Comment
  CAS-BOT-BC168739  Ribes victoris John Thomas Howell 1943-3-7 17887 Marin Hills northeast of San Rafael Comment
  CAS-BOT-BC363035  Rigiopappus leptocladus John Thomas Howell 1955-5-20 30213 Monterey 3.5 miles east of summit of Jamesburg road, Santa Lucia Mts. Comment
  CAS-BOT-BC363047  Rigiopappus leptocladus John Thomas Howell 1931-4-3 6130 Napa Pope Creek Canyon, 8 miles from Monticello, Napa Range Comment
  RSA20165  Rigiopappus leptocladus J. T. Howell 1937-5-19 12925 San Benito The Pinnacles. Comment
  CAS-BOT-BC58413  Rorippa curvisiliqua John Thomas Howell 1934-6-30 12296 Modoc Duncan Horse Camp. 1355 Comment
  CAS-BOT-BC58423  Rorippa curvisiliqua John Thomas Howell 1934-6-12 12019 Modoc Plum Valley, Warner Mts. Comment
  CAS-BOT-BC74586  Rorippa curvisiliqua John Thomas Howell 1963-8-5 39915 Monterey Along Watsonville-San Juan Road, about 2 miles south of Aromas. Comment
  CAS-BOT-BC74554  Rorippa curvisiliqua John Thomas Howell 1924-6-14 411 Mariposa Wawona Valley. 1219 Comment
  RSA32272  Rorippa curvisiliqua J. T. Howell 1946-6-16 22090 Marin Point Reyes Station. Comment
  SD113310  Rorippa nasturtium-aquaticum Darley F. Howe 1936-4-26 319 San Diego Campo Comment
  SD114313  Rosa pisocarpa D. F. Howe 1962-5-20 3286 Mendocino 9.1 miles north of Willits on #101 366 Comment
  CAS-BOT-BC148226  Rosa spithamea John Thomas Howell 1942-6-21 17001 Marin San Anselmo Canyon Comment
  SD61071  Rosa woodsii var. ultramontana Darley F. Howe none given Lassen Hillside of Parsnip Creek, Modoc National Forest 1829 Comment
  CAS-BOT-BC497329  Rosa woodsii var. ultramontana John Thomas Howell 1934-6-12 12036 Modoc 7 miles N of Davis Creek Comment
  CAS-BOT-BC274269  Rostraria cristata John Thomas Howell 1954-4-26 29187 Tehama Dibble Creek just north of Red Bluff Comment
  A366054  Rubus J. T. Howell 1938-6-4 13891 Unknown Naturalized in Burlingame Comment
  A346208  Rubus parviflorus J. T. Howell 1939-6-25 14807 Unknown Mt. Tamalpais Comment
  CAS-BOT-BC156894  Rubus ursinus John Thomas Howell 1970-4-1 46505 Monterey Bank of Carmel River just south of Carmel at Highway #1 Comment
  CAS-BOT-BC158742  Rubus ursinus John Thomas Howell 1950-5-20 26317 Tulare Three Rivers 304 Comment
  CAS-BOT-BC158837  Rubus ursinus John Thomas Howell 1938-5-22 13801 Marin San Anselmo Canyon Comment
  CAS-BOT-BC158840  Rubus ursinus John Thomas Howell 1938-6-19 13918 Marin Azalea Flat, Mt. Tamalpais Comment
  CAS-BOT-BC158841  Rubus ursinus John Thomas Howell 1938-6-5 13898 Marin Azalea Flat, Mt. Tamalpais Comment
  CAS-BOT-BC158845  Rubus ursinus John Thomas Howell 1938-6-19 13930 Marin Near Trestle, Mt. Tamalpais Comment
  CAS-BOT-BC158849  Rubus ursinus John Thomas Howell 1938-6-19 13929 Marin Near Rattlesnake, Mt. Tamalpais Comment
  RSA40193  Rudbeckia occidentalis J. T. Howell 1943-8-9 19222 Glenn Plaskett Meadows. 1829 Comment
  CAS-BOT-BC422165  Rumex californicus John Thomas Howell 1959-9-21 34813 Plumas Indian Creek Canyon 914 Comment
  SD114202  Rumex conglomeratus Darley F. Howe 1938-6-5 141 San Diego Otay Valley, stream bank. Comment
  CAS-BOT-BC421767  Rumex conglomeratus John Thomas Howell 1939-5-14 s.n. Marin Ross Comment
  CAS-BOT-BC421532  Rumex crassus John Thomas Howell 1946-7-4 22173 Marin Dillons Beach Comment
  CAS-BOT-BC433680  Rumex obtusifolius John Thomas Howell 1937-5-23 s.n. San Francisco Presidio, San Francisco Comment
  CAS-BOT-BC433734  Rumex occidentalis John Thomas Howell 1960-7-19 35623 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  CAS-BOT-BC109392  Rumex paucifolius John Thomas Howell 1940-8-1 15870 Tulare Between Reflection Lake and Harrison Pass. Comment
  CAS-BOT-BC433934  Rumex salicifolius John Thomas Howell 1946-7-7 22204 Marin Potrero Meadow, Mt. Tamalpais Comment
  CAS-BOT-BC433903  Rumex salicifolius John Thomas Howell 1970-9-24 47386 Kern Dry bed of Clear Creek, 1.5 mile n. of Havilah 914 Comment
  NY430648  Rumex salicifolius subsp. triangulivalvis J. T. Howell 1934-6-15 12189 Modoc Alturas Comment
  UC1176808  Rumex salicifolius var. crassus John Thomas Howell 1946-7-4 22173 Marin Dillons Beach Comment
  CAS-BOT-BC434322  Rumex triangulivalvis John Thomas Howell 1955-7-20 30878 Sierra Near Calpine 1508 Comment
  CAS-BOT-BC434366  Rumex violascens John Thomas Howell 1970-9-25 47470 Kern Strand-bed of Lake isabella (east side of north arm), about 5 miles south of Kernville 792 Comment
  SD61014  Sagina saginoides D. F. Howe 1964-8-1 Lassen Parsnip Creek, Warner Mts., Modoc National Forest 1829 Comment
  CAS-BOT-BC445632  Sagittaria brevirostra John Thomas Howell 1947-6-18 23261 Marin Laguna, Chileno Valley Comment
  A382361  Salix arctica J. T. Howell 1940-8-2 15918 Unknown West of Reflection Lake 3352 Comment
  CAS-BOT-BC132882  Salix arctica John Thomas Howell 1942-7-30 17421 Tulare Little Five Lakes Basin Comment
  CAS-BOT-BC102816  Salix boothii John Thomas Howell 1939-8-7 15132 Siskiyou Sky High Valley, Marble Mts. 1828 Comment
  CAS-BOT-BC108591  Salix drummondiana John Thomas Howell 1969-8-28 46023 Tulare Mineral King - Sierra Nevada 2377 Comment
  A382513  Salix eastwoodiae J. T. Howell 1939-8-5 15078 Unknown Spirit Lake, Marble Mts. Comment
  RSA201502  Salix eastwoodiae J. T. Howell 1939-8-7 15131 Siskiyou Marble Mountain: Sky High Valley. 1829 Comment
  CAS-BOT-BC103883  Salix exigua John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-23 54187 Plumas Rush Creek 1402 Comment
  RSA502889  Salix exigua J. T. Howell 33512 Inyo Bishop Creek. 2043 Comment
  CAS-BOT-BC125140  Salix lasiandra var. lasiandra John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-5-17 52917 Calaveras Camanche Parkway South between Burson Road and Camanche Reservoir 152 Comment
  CAS-BOT-BC125520  Salix lasiandra var. lasiandra John Thomas Howell 1975-6-4 51025 Tuolumne South Fork Tuolumne River south of Mather Comment
  CAS-BOT-BC125521  Salix lasiandra var. lasiandra John Thomas Howell 1954-6-6 29966 Tuolumne Twain Harte 1127 Comment
  CAS-BOT-BC128076  Salix lasiandra var. lasiandra John Thomas Howell 1966-6-22 41591 Mono Convict Lake - Sierra Nevada Comment
  CAS-BOT-BC128164  Salix lasiandra var. lasiandra John Thomas Howell 1962-9-22 38750 Kern Kern Co. Park - Greenhorn Mountains, Sierra Nevada 1828 Comment
  CAS-BOT-BC107338  Salix lasiolepis var. bigelovii John Thomas Howell 1963-8-5 39920 Monterey Along Watsonville-San Juan Road, about 2 miles south of Aromas Comment
  CAS-BOT-BC107442  Salix lasiolepis var. lasiolepis John Thomas Howell 1958-5-26 33415 Inyo Onion Valley Road 2133 Comment
  CAS-BOT-BC128442  Salix lasiolepis var. lasiolepis John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54287 Plumas Moist seepage area on China Grade, 1.4 miles south of Taylorsville - Sierra Nevada 1402 Comment
  RSA128974  Salix lasiolepis var. sandbergii J. T. Howell 1951-8-19 28171 Plumas 3 miles E of Rich Bar. 854 Comment
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Jun 4 2009
  RSA504716  Salix lemmonii J. T. Howell 1963-8-20 40150 Inyo Whitney Portal. 2546 Comment
  CAS-BOT-BC125036  Salix lemmonii John Thomas Howell; Gordon H. True 1968-7-15 4389 Tuolumne Just west of Sonora Pass, on Hwy. 108 2804 Comment
  CAS-BOT-BC125062  Salix ligulifolia John Thomas Howell; Gordon H. True 1969-9-29 46325 Kern Fay Creek southeast of True Meadow, Kern Plateau 2072 Comment
  CAS-BOT-BC125539  Salix lutea John Thomas Howell; Gordon H. True 1971-6-16 47970 Kern Claraville 1920 Comment
  RSA44401  Salix lutea J. T. Howell 1947-8-13 24065 Inyo Big Pine Lakes Trail. 2744 Comment
  CAS-BOT-BC125641  Salix melanopsis John Thomas Howell 1962-7-12 38657 Kern 3 mi. north of Kernville 822 Comment
  CAS-BOT-BC125702  Salix melanopsis John Thomas Howell 1955-7-17 30680 A Trinity Weaverville 609 Comment
  CAS-BOT-BC129402  Salix melanopsis John Thomas Howell 1958-7-23 33822 Fresno Simpson Meadow, Middle Fork of the Kings River - Sierra Nevada 1828 Comment
  CAS-BOT-BC125800  Salix orestera John Thomas Howell 1944-8-16 20640 Mono Mono Pass Comment
  CAS-BOT-BC129372  Salix orestera John Thomas Howell 1947-8-8 23926 Inyo Second to Third Lake, Big Pine Lakes 3048 Comment
  CAS-BOT-BC126170  Salix scouleriana John Thomas Howell 1939-8-6 15102 A Siskiyou Elk Peak, Marble Mts., Siskiyou Mts. Comment
  CAS-BOT-BC126171  Salix scouleriana John Thomas Howell 1939-8-5 15081 Siskiyou Spirit Lake, Marble Mts. 1828 Comment
  CAS-BOT-BC129103  Salix scouleriana John Thomas Howell 1958-5-24 33268 Inyo Whitney Portal - Sierra Nevada 2529 Comment
  CAS-BOT-BC129199  Salix scouleriana John Thomas Howell 1940-8-10 16095 Fresno Junction Meadow, Bubbs Creek Comment
  CAS-BOT-BC175952  Salpichroa origanifolia John Thomas Howell 1943-6-13 18224 Marin Sausalito Comment
  CAS-BOT-BC180760  Salsola tragus John Thomas Howell 1960-6-6 35368 Fresno Kings Canyon 6.5 miles W of Cedar Grove - Sierra Nevada 1036 Comment
  CAS-BOT-BC180761  Salsola tragus John Thomas Howell 1963-8-21 40252 Inyo Bishop Creek - Sierra Nevada 1950 Comment
  CAS-BOT-BC180769  Salsola tragus John Thomas Howell 1949-8-13 26298 Inyo East slope of Wonoga Peak at end of road. 2590 Comment
  CAS-BOT-BC180707  Salsola tragus John Thomas Howell 1952-10-26 28876 Los Angeles Vacant lot, Palmdale Comment
  RSA216174  Salsola tragus J. T. Howell 1957-6-25 32774 Kern Road cut, 3.8 miles from Edison on road to Tehachapi. 244 Comment
  SD81179  Salvia columbariae Darley F. Howe 1971-5-3 San Bernardino 13 miles east of Goffs. 502 Comment
  CAS-BOT-BC214271  Salvia dorrii var. pilosa John Thomas Howell 1958-5-25 33366 Inyo Carroll Creek 1676 Comment
  CAS-BOT-BC245899  Sambucus nigra subsp. caerulea John Thomas Howell; Gordon H. True 1969-10-1 46417 Tulare Snake Creek, on Poison Meadow to Brush Creek Overlook Road, Kern Plateau, Sierra Nevada 2468 Comment
  UC691880  Sanicula saxatilis J. T. Howell 1942-5-24 16969 Contra Costa Mount Diablo, Eagle Point Mount Diablo; , Eagle Point Comment
  SD112999  Sanicula tuberosa Darley F. Howe 1955-5-22 2468 San Diego One half mile south of Highway 80 on road to Hipass 1220 Comment
  CAS-BOT-BC466344  Sarcodes sanguinea John Thomas Howell 1958-7-26 33954 Fresno Sierra Nevada. Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC441197  Saxifraga mertensiana John Thomas Howell 1934-3-4 11771 Mendocino Near headwaters of Navarro River between Brownville and Cloverdale Comment
  UCD126467  Schedonorus arundinaceus John Thomas Howell 1960-8-20 36248 Tehama Morgan, Lassen Volcanic National Park. 1463 Comment
  CAS-BOT-BC283624  Schedonorus pratensis John Thomas Howell 1951-6-26 27520 Butte Big Bend Mt 609 Comment
  CAS-BOT-BC283603  Schedonorus pratensis John Thomas Howell 1964-8-10 40923 Alpine Markleeville 1676 Comment
  CDA2419  Schismus arabicus J. T. Howell 1948-4-26 24268 Kern 2 mi. N of Mohave. 0 Comment
  SD112698  Schismus arabicus Darley F. Howe 1953-5-2 2293 Los Angeles Mouth of Wain Canyon, Santa Catalina Island Comment
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Jun 10 2014
  SEINET196568 Image available Schismus arabicus John Thomas Howell 1948-1 24268 Kern 2 miles north of Mohave Comment
  RSA54091  Scirpus congdonii J. T. Howell 1946-8-30 22917 El Dorado Upper Angora Lake Comment
  CDA39117  Scirpus cyperinus J. T. Howell 1976-8-13 52233 Mariposa Sierra Nevada; Merced River near mouth of Yosemite Creek, Yosemite Valley. Comment
  CAS-BOT-BC239964  Scribneria bolanderi John Thomas Howell 1955-6-14 30466 Butte Magalia 731 Comment
  CAS-BOT-BC239977  Scribneria bolanderi John Thomas Howell 1960-6-7 35417 Fresno Kings Canyon road 6.5 mi. ne. of Cherry Gap 1554 Comment
  CAS-BOT-BC240005  Scribneria bolanderi John Thomas Howell 1946-4-13 s.n. Marin Near Rock Spring, Mt. Tamalpais Comment
  CAS-BOT-BC243494  Scribneria bolanderi John Thomas Howell 1954-4-26 29187 A Tehama Dibble Creek, just north of Red Bluff Comment
  SEINET10959759  Scribneria bolanderi John Thomas Howell 1945-5-27 Howell 20879 Marin Serpentine area above Bootjack, Mt. Tamalpais, . Comment
  RSA51478  Scrophularia californica var. desertorum J. T. Howell 1949-7-30 25922 Tulare Volcanic cone at Tunnel. 2927 Comment
  SD128715  Scutellaria mexicana Darley F. Howe 1980-5-26 San Bernardino West slope of Clark Mountain. 1310 Comment
  CAS-BOT-BC179222  Scutellaria nana John Thomas Howell 1934-7-3 12374 Modoc 5 mi. S of Hackamore. Comment
  CAS-BOT-BC214270  Scutellaria nana John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50692 Lassen Slope south and southeast of Diamond Mt., Sierra Nevada 2286 Comment
  RSA676  Scutellaria siphocampyloides J. T. Howell 1927-7-10 348 San Bernardino Big Bear Lake. 2043 Comment
  SD53215  Sedella pumila Darley F. Howe 1962-5-16 Tuolumne 10 miles east of Sonora on Highway 108. 1130 Comment
  CAS-BOT-BC59187  Sedum lanceolatum John Thomas Howell 1939-8-4 15050 Siskiyou Marble Rim, Marble Mts. 1889 Comment
  SDSU5726  Sedum niveum D. F. Howe 1946-8-3 1477 San Bernardino Sugarloaf Peak. 2926 Comment
Read comments
Jan 24 2013
  CAS-BOT-BC69809  Selaginella bigelovii John Thomas Howell 1927-8-1 2886 A Riverside Morongo Canyon, n. Colorado desert. 609 Comment
  CAS-BOT-BC62128  Selaginella hansenii John Thomas Howell; R. C. Barneby 1954-5-9 29301 Fresno Dunlap 563 Comment
  CAS-BOT-BC62118  Selaginella hansenii John Thomas Howell 1959-9-20 34716 Butte Feather River Highway at West Branch bridge Comment
  UC473492  Selaginella leucobryoides John Thomas Howell 1928-6-16 3989 Inyo Surprise Canyon; Panamint Mts. Comment
  CAS-BOT-BC69711  Selaginella wallacei John Thomas Howell 1941-4-5 16163 Napa Franz Valley. Comment
  CAS-BOT-BC62199  Selaginella wallacei John Thomas Howell 1926-11-14 2251 Sonoma Hills east of Santa Rosa Comment
  CAS-BOT-BC363329  Senecio aronicoides John Thomas Howell 1925-4-5 922 Marin Pipeline Trail Comment
  CAS-BOT-BC363434  Senecio aronicoides John Thomas Howell 1944-7-14 19762 Mendocino Anthony Peak, east side Comment
  CAS-BOT-BC363562  Senecio clarkianus John Thomas Howell 1924-7-29 580 Mariposa At Indian Bridge, Wawona 1219 Comment
  RSA15117  Senecio eurycephalus J. T. Howell 1935-5-12 12626 Napa Pope Creek Canyon one mile below Samuels Springs. Comment
  CAS-BOT-BC323171  Senecio flaccidus var. douglasii John Thomas Howell 1927-11-27 3272 San Diego 2 miles S of Aguanga on road to Warner's Hot Springs 609 Comment
  CAS-BOT-BC363918  Senecio integerrimus var. exaltatus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54238 Plumas About 3 miles southeast of Mt. Hough on the road to Quincy 1737 Comment
  RSA0013678  Senecio spartioides J. T. Howell 1947-7-25 23632 San Bernardino Near Dry Lake, San Bernardino Mts. 2774 Comment
  CAS-BOT-BC364616  Senecio vulgaris John Thomas Howell 1957-5-6 32224 San Francisco San Francisco. Hunters Point Comment
  CAS-BOT-BC240122  Setaria pumila John Thomas Howell 1959-9-20 34680 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC243651  Setaria pumila John Thomas Howell 1967-11-3 44021 Tulare Across Road 160 at NW corner, about 4.5 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC240232  Setaria viridis John Thomas Howell 1962-9-25 38914 Kern Kernville 807 Comment
  SDSU8177  Sidalcea malviflora subsp. asprella D. F. Howe 1963-8-5 3699 Del Norte 9 miles south of CA-OR. state line on Sanger Reak Road, Siskiyou National Forest 1676 Comment
  SD113827  Sidalcea malviflora subsp. dolosa Darley F. Howe 1947-6-25 1646 San Bernardino Rathbone Creek, San Bernardino Mountains. Comment
  CAS-BOT-BC384316  Silene bernardina John Thomas Howell 1943-8-8 19186 Mendocino Anthony Peak, Tehama-Mendocino Co. Comment
  SDSU3024  Silene californica D. F. Howe 1963-7-4 3595 Mendocino 13.8 miles north of Ft. Bragg on #1. Comment
  CAS-BOT-BC387043  Silene gallica John Thomas Howell 1952-7-11 28838 Del Norte Crescent City Comment
  CAS-BOT-BC181339  Silene laciniata John Thomas Howell 1928-4-21 3736 Ventura Bluffs Point Mugu Comment
  RSA288  Silene laciniata subsp. major J. T. Howell 1927-6-26 217 Orange Claymine Canyon near Sierra Peak 305 Comment
  CAS-BOT-BC389323  Silene lemmonii John Thomas Howell 1962-7-9 38393 Kern Near Park headquarters. Greenhorn Mountains 1798 Comment
  CAS-BOT-BC389474  Silene lemmonii John Thomas Howell 1944-8-14 20482 Tuolumne Tuolumne Canyon above Glen Aulin Comment
  SD42680  Silene lemmonii Darley F. Howe 1947-5-30 1654 Kern Greenhorn Mountains. 2070 Comment
  CAS-BOT-BC389619  Silene sargentii John Thomas Howell 1946-7-20 22588 Fresno Ridge south of Mono Rock 3596 Comment
  CAS-BOT-BC389857  Silene sargentii John Thomas Howell 1940-8-1 15867 Tulare Between Reflection Lake and Harrison Pass Comment
  CAS-BOT-BC389885  Silene scouleri subsp. scouleri John Thomas Howell 1957-6-30 32798 San Francisco San Francisco. Summit ridge, Bayview Hills Comment
  CAS-BOT-BC389889  Silene scouleri subsp. scouleri John Thomas Howell 1957-7-28 32823 San Francisco San Francisco. Bayview Hills Comment
  CAS-BOT-BC175082  Silene verecunda John Thomas Howell 1940-7-28 15635 Fresno Near Sphinx Creek, Bubbs Creek Comment
  RSA201484  Silene verecunda subsp. platyota J. T. Howell 1958-7-22 33713 Fresno Simpson Meadow, Middle Fork of the Kings River. 1829 Comment
  CAS-BOT-BC364834  Silybum marianum John Thomas Howell 1963-5-18 39276 Monterey 2.5 miles south of Aromas 60 Comment
  CAS-BOT-BC75265  Sisymbrium irio John Thomas Howell 1967-11-4 44090 Tulare From wild area south of reserve. Vernal pool natural area. About 4.5 miles east-northeast of Pixley. 83 Comment
  CAS-BOT-BC135398  Sisyrinchium John Thomas Howell 1962-6-15 37518 Butte Magalia - Sierra Nevada 731 Comment
  SD112454  Sisyrinchium bellum Darley F. Howe 1935-3-17 154 San Diego Otay. Comment
  NY826947  Solanum elaeagnifolium J. T. Howell 1970-9-21 47231 Kern The Sierra Nevada. 2.5 miles northwest of Woody. Comment
  CAS-BOT-BC156873  Solanum umbelliferum J. T. Howell 1933-4-9 10979 Santa Cruz [Ano] Ano Nuevo Pines Comment
  CAS-BOT-BC157231  Solanum umbelliferum J. T. Howell 1930-5-14 5100 Kern West slope of the Greenhorn Range above Glenville 1371 Comment
  CAS-BOT-BC157527  Solanum umbelliferum J. T. Howell 1925-2-8 749 Alameda Strawberry [Canon] Canyon, Berkeley Hills Comment
  CAS-BOT-BC157540  Solanum umbelliferum J. T. Howell 1945-5-13 20861 Marin Deer Park (Near Fairfax) Comment
  CAS-BOT-BC157541  Solanum umbelliferum J. T. Howell 1939-4-23 14606 Marin Blythedale Canyon, Mill Valley Comment
  CAS-BOT-BC231708  Solanum umbelliferum John Thomas Howell 1925-3-22 794 Alameda Arroyo Mocho Comment
  CAS-BOT-BC422306  Soleirolia soleirolii John Thomas Howell 1957-6-11 32613 San Francisco San Francisco. Lone Mt. Comment
  CAS-BOT-BC365169  Solidago velutina subsp. californica John Thomas Howell 1956-6-17 s.n. San Francisco Bayview Hills, San Francisco Comment
  CAS-BOT-BC374682  Sonchus oleraceus John Thomas Howell 1957-5-26 32419 San Francisco San Francisco. North base of Lone Mt. Comment
  RSA215968  Sonchus oleraceus J. T. Howell 1957-6-16 32668 San Francisco Third and Davidson streets. Comment
  CAS-BOT-BC157294  Sorbus californica John Thomas Howell 1943-7-23 18730 Nevada Between Donner Pass and West Lake Comment
  CAS-BOT-BC389916  Spergula arvensis John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey 1978-4-4 52735 Calaveras Near Wallace 66 Comment
  UCR88888  Spergularia atrosperma J. T. Howell 1962-6-19 37866 Plumas Sierra Nevada Mtns., 5.8 mi east of Beckworth. 1494 Comment
  UC421589  Spergularia bocconi John Thomas Howell 1929-4-18 4167 Merced Merced Comment
  RSA0097865  Spergularia bocconi J. T. Howell 1956-4-22 31252 San Francisco Aquatic Park, San Francisco. Comment
  CAS-BOT-BC390347  Spergularia macrotheca var. macrotheca John Thomas Howell 1945-6-3 20938 Marin Shell Beach Comment
  SDSU4527  Spergularia marina D. F. Howe 1941-3-22 1202 Imperial Near Calipatria. Comment
  CAS-BOT-BC390562  Spergularia rubra John Thomas Howell 1958-8-10 34265 Madera Miller Meadow 2103 Comment
  UCD99206  Spergularia villosa John Thomas Howell 1944-6-25 19643 Marin Santa Venetia. 7 Comment
  CAS-BOT-BC391009  Spergularia villosa John Thomas Howell 1945-5-9 20853 Marin Between Ignacio and Novato Comment
  SD53336  Spiranthes romanzoffiana Darley F. Howe 1962-8-15 3474 Fresno Shaver Lake, Sierra National Forest, meadow. 1676 Comment
  CAS-BOT-BC236687  Sporobolus airoides John Thomas Howell; Gordon H. True 1967-5-31 42502 Tulare Vernal pool natural area, about 4.5 miles east-northeast of Pixley, From S 1/3 area. 83 Comment
  UCD93047  Sporobolus airoides John Thomas Howell 1973-7-25 50015 Merced Ingomar. 30 Comment
  UC618587  Stachys albens J. T. Howell 1938-7-17 13983 Solano Suisun Marshes Suisun Comment
  SD129869  Stanleya pinnata Melanie Howe, David K. Faulkner 1990-6-13 86 Inyo Surprise Canyon 900 Comment
  CAS-BOT-BC374834  Stebbinsoseris heterocarpa John Thomas Howell 1963-5-5 39027 Monterey Mustang Grade, west of Priest Valley 670 Comment
  CAS-BOT-BC181424  Stellaria calycantha John Thomas Howell 1940-8-4 15984 Tulare Ouzel Basin 3200 Comment
  RSA478142  Stellaria longipes J. T. Howell 1947-8-8 23899 Inyo Third to Fifth Lake, Big Pine Lakes. 3201 Comment
  CAS-BOT-BC398265  Stellaria umbellata John Thomas Howell 1949-8-10 26207 Tulare Upper Soldier Lake 3413 Comment
  CAS-BOT-BC398269  Stellaria umbellata John Thomas Howell 1969-8-27 45989 Tulare Near Mineral King in Glacial Valley below White Chief Mine 2895 Comment
  CAS-BOT-BC516469  Stenanthium occidentale John Thomas Howell 1939-8-5 15070 Siskiyou Spirit Lake, Marble Mts. 1828 Comment
  UC1042571  Stephanomeria exigua subsp. coronaria John Thomas Howell 1950-8-29 27439 Inyo Onion Valley road Sierra Nevada 2438 Comment
  CAS-BOT-BC375417  Stephanomeria exigua subsp. coronaria John Thomas Howell; Gordon H. True 1971-7-15 48537 Tulare One Dome Lands Trail about 0.5 miles south of Church Dome, Kern Plateau 2316 Comment
  CAS-BOT-BC322958  Stephanomeria tenuifolia John Thomas Howell 1938-8-10 14465 Madera Near Devil's Postpile Comment
  CAS-BOT-BC375766  Stephanomeria virgata John Thomas Howell 1959-9-20 34717 Butte Feather River Highway at West Branch bridge Comment
  SDSU3301  Stipa hymenoides D. F. Howe 1947-5-4 1543 Los Angeles Antelope Valley Comment
  SD112892  Stipa pulchra Darley F. Howe 1935-4-7 196 San Diego Mission Valley. Comment
  SD45759  Stipa speciosa Darley F. Howe 1954-5-30 2379 Ventura Lockwood Valley. Comment
  CAS-BOT-BC61167  Streptanthus batrachopus John Thomas Howell 1939-5-14 14681 Marin East of Collier Spring, Mount Tamalpais. Comment
  CAS-BOT-BC87151  Streptanthus glandulosus subsp. glandulosus John Thomas Howell 1931-4-3 6120 Napa Napa Range. Pope Creek Canyon, 8 miles from Monticello. Comment
  CAS-BOT-BC87257  Streptanthus glandulosus subsp. pulchellus John Thomas Howell 1938-5-22 13791 Marin San Anselmo Canyon. Comment
  CAS-BOT-BC87429  Streptanthus polygaloides John Thomas Howell 1955-6-14 30460 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC87522  Streptanthus tortuosus John Thomas Howell 1963-7-12 39845 El Dorado Sierra Nevada. Meyers. 1935 Comment
  CAS-BOT-BC87523  Streptanthus tortuosus John Thomas Howell 1963-7-12 39885 El Dorado Sierra Nevada. 3 miles southwest of Twin Bridges on road to Kyburz. 1676 Comment
  CAS-BOT-BC87908  Streptanthus tortuosus John Thomas Howell 1965-9-13 41380 Tulare Sierra Nevada. Generals Highway at Dorst Creek. 2042 Comment
  GH422386  Streptanthus tortuosus J. T. Howell 1964-4-27 40526 Unknown El Portal 640 Comment
  RSA88479  Streptanthus tortuosus J. T. Howell 1951-7-20 28041 Tulare Near little tarn east of Farewell Gap, Mineral King and vicinity. 3506 Comment
  JEPS37782  Stylocline gnaphaloides John Thomas Howell and R. C. Barneby 1954-5-11 29414 Madera burn 2 mi w Oakhurst 670 Comment
  CAS-BOT-BC48040  Styrax redivivus John Thomas Howell 1940-6-30 15589 Lake Soda Bay Comment
  CAS-BOT-BC234779  Symphoricarpos mollis John Thomas Howell 1939-8-2 14947 Siskiyou Spirit Lake, Marble Mts. 1828 Comment
  CAS-BOT-BC238995  Symphoricarpos rotundifolius John Thomas Howell 1969-9-14 46212 Mono Leavitt Meadow 2194 Comment
  CAS-BOT-BC239052  Symphoricarpos rotundifolius John Thomas Howell 1951-7-17 27851 Tulare Mineral King and Vicinity. White Chief Trail 2895 Comment
  CAS-BOT-BC239075  Symphoricarpos rotundifolius John Thomas Howell 1944-8-12 20425 Tuolumne Gaylor Lakes 3261 Comment
  SD42602  Symphoricarpos rotundifolius var. parishii Darley F. Howe 1947-6-22 San Bernardino South Big Bear. Comment
  SD42791  Symphyotrichum ascendens Darley F. Howe 1947-8-28 San Bernardino East fork Santa Ana River, below Big Meadows. 2195 Comment
  SD64360  Symphyotrichum bracteolatum Darley F. Howe 1966-8-26 Modoc 1.3 miles north of Lassen-Modoc County Line. East of Warner Mountains. 1340 Comment
  CAS-BOT-BC98910  Symphyotrichum foliaceum var. parryi John Thomas Howell; Gordon H. True 1970-7-30 47193 Tulare Along Salmon Creek at norht end of Big Meadow - Kern Plateau 2377 Comment
  CAS-BOT-BC98941  Symphyotrichum foliaceum var. parryi John Thomas Howell 1939-8-7 15133 Siskiyou Sky High Valley, Marble Mts. 1828 Comment
  UC703208  Symphyotrichum spathulatum J. Thomas Howell 1941-8-10 16929 Madera Agnew Meadows Comment
  CAS-BOT-BC98254  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1981-10-13 54624 Sutter Bobelaine Audubon Sanctuary, Feather River at mouth of Bear River 9 Comment
  CAS-BOT-BC98262  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1967-11-3 44063 Tulare Vernal pool nartural area, about 4.5 miles east-northeast of Pixley - near midpoint along west fence 83 Comment
  SBBG92166  Tamarix aphylla D. F. Howe 1980-9-21 San Bernardino Interstate 15, 13 mi W of Baker 520 Comment
  SBBG92174  Tamarix parviflora D. F. Howe 1980-5-28 Inyo Hwy 178, 2 mi E of Shoshone 430 Comment
  SD128687  Tamarix ramosissima Darley F. Howe 1980-4-13 Imperial 2 miles west of California-Arizona state line, on Highway 8. (IPB 10/07) Comment
  CAS-BOT-BC376989  Taraxacum officinale John Thomas Howell 1960-8-20 36251 Tehama Near Lassen Volcanic National Park. Morgan 1463 Comment
  A355459  Taxus brevifolia J. T. Howell 1937-7-26 13563 Unknown Between Big Flat and Carbou Gulch, Siskiyou Co. Comment
  SDSU2035  Taxus brevifolia D. F. Howe 1964-8-7 4128 Humboldt 8.2 miles from #96 on Mill Creek Road, Hoopa Valley. 1067 Comment
  SDSU570  Tetradymia axillaris var. longispina D. F. Howe 1948-5-3 1803 Los Angeles 1.5 miles south of Lancaster. Comment
  CAS-BOT-BC329025  Tetradymia canescens John Thomas Howell 1928-6-15 3948 Inyo near crest of Panamint Mountains above Surprise Canyon 2743 Comment
  CAS-BOT-BC329029  Tetradymia canescens John Thomas Howell 1949-7-17 25396 Inyo Wonoga Peak 2743 Comment
  CAS-BOT-BC329030  Tetradymia canescens John Thomas Howell 1950-7-12 26669 Inyo Sage Flat to Olancha Pass 2438 Comment
  SDSU574  Tetradymia glabrata D. F. Howe 1965-5-18 4051 Inyo 2.3 miles north of Big Pine on #395. 1219 Comment
  CAS-BOT-BC340111  Tetradymia stenolepis John Thomas Howell 1962-5-21 37149 Kern Northeast of Lake Isabella 792 Comment
  CAS-BOT-BC340110  Tetradymia stenolepis John Thomas Howell 1962-7-12 38666 Kern Northeast of Lake Isabella 914 Comment
  CAS-BOT-BC438235  Tetragonia tetragonoides John Thomas Howell 1944-6-25 19669 Marin Between McNear's Landing and San Rafael Comment
  CAS-BOT-BC392332  Thalictrum fendleri John Thomas Howell 1958-7-28 34073 Fresno Trail between Simpson Meadow and Tehipite Valley, Middle Fork of the Kings River 1737 Comment
  CAS-BOT-BC392353  Thalictrum fendleri John Thomas Howell; Gordon H. True 1971-6-15 47803 Kern Flying Dutchman Creek Canyon on Havilah - Mt. Breckenridge road 1249 Comment
  CAS-BOT-BC392366  Thalictrum fendleri John Thomas Howell 1938-8-8 14408 Mono Mammouth [Mammoth] Lakes Basin Comment
  POM261551  Thalictrum sparsiflorum J. T. Howell 1940-7-30 15700 Tulare East Lake 2927 Comment
  CAS-BOT-BC197363  Thinopyrum intermedium subsp. barbulatum John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-27 53124 Alpine Canyon of East Fork of Carson River on road to Wolf Creek Meadows 1767 Comment
  CAS-BOT-BC66539  Thysanocarpus curvipes John Thomas Howell 1933-4-23 11123 San Benito The Pinnacles. Comment
  CAS-BOT-BC66876  Thysanocarpus curvipes John Thomas Howell; Gordon H. True 1968-5-14 44426 Tulare Sierra Nevada. Kern Plateau. Cherry Hill Road, Brush Creek Canyon. 1219 Comment
  CAS-BOT-BC88251  Thysanocarpus curvipes John Thomas Howell 1933-5-14 11271 Contra Costa Hills east of Saint Mary's College. Comment
  CAS-BOT-BC88458  Thysanocarpus curvipes John Thomas Howell 1928-5-4 3767 Los Angeles San Gabriel Mountains. Morrovia Canyon above the dam. Comment
  CAS-BOT-BC67048  Thysanocarpus laciniatus John Thomas Howell 1931-3-22 5954 Monterey Stone Canyon 8 miles east of Salinas Valley. Comment
  SD51331  Tiarella trifoliata var. unifoliata Darley F. Howe 1961-7-31 3097 Humboldt 12 miles north of Garberville on #101 29 Comment
  SEINET12044516  Tofieldia glutinosa J. T. Howell 1937-1 13371 Siskiyou South Fork of Salmon River near Big Flat 1524 Comment
  HSC1601  Torreya californica J. Wendell Howe Aug 1930 Tuolumne 3 mi. W of Arch Rock, Yosemite Comment
  SEINET7295175 Image available Torreyochloa pallida var. pauciflora John Thomas Howell 1961-1 36934 Plumas Feather River bed, Portola 1478 Comment
  UCD93197  Torreyochloa pallida var. pauciflora John Thomas Howell 1958-8-17 34540 Madera Cora Lake. 2560 Comment
  CAS-BOT-BC169214  Toxicodendron diversilobum John Thomas Howell 1964-4-28 40618 Mariposa 2 miles east of Morman Bar - Sierra Nevada 670 Comment
  UCD116989  Toxicodendron diversilobum John Thomas Howell 1976-5-19 51758 Kern Between Isabella Dam and Keysville, Greenhorn Mountains. 822 Comment
  CAS-BOT-BC519555  Triantha occidentalis subsp. occidentalis John Thomas Howell 1945-8-14 21407 Sonoma Sonoma: Perry Marsh Comment
  CAS-BOT-BC438302  Trianthema portulacastrum John Thomas Howell; Gordon H. True 1967-7-6 43241 Tulare Along Road 160 south of reservation. About 4 1/2 miles east-northeast of Pixley 83 Comment
  UCD107398  Tribulus terrestris John Thomas Howell 1973-11-4 50320 Monterey King City. 100 Comment
  UCLA54744  Trichostema oblongum John Thomas Howell 1937-7-21 13208 Trinity Big Flat Comment
  SD62087  Trientalis latifolia Darley F. Howe 1965-5-21 4061 Placer Canyon, north side of American River between Forest Hill and Yankee Jims 914 Comment
  UC575714  Trifolium albopurpureum var. dichotomum John Thomas Howell 1935-4-11 12593 Alameda Tesla Hills Comment
  UC1177201  Trifolium bifidum var. decipiens John Thomas Howell 1943-5-9 17968 Marin San Rafael Hills Comment
  SDSU5276  Trifolium dubium D. F. Howe 1965-5-21 4066 Placer Canyon on south side of north fork of American River between Forest Hill and Yankee Jims. 914 Comment
  SD73200  Trifolium incarnatum Darley F. Howe 1969-6-3 4623 Humboldt 13 miles north of Orick on Hwy 101 Comment
  SD113235  Trifolium wormskioldii Darley F. Howe 1936-7-1 390 San Diego Laguna Mountains Comment
  SD113512  Triodanis biflora Darley F. Howe 1958-5-25 2635 San Diego Just east of Del Mar on east side of canyon Comment
  SEINET10459933  Triodanis perfoliata Howell Howell 27766 Plumas FEATHER RIVER Comment
  CAS-BOT-BC199585  Trisetum canescens John Thomas Howell 1951-8-21 28269 Sierra Yuba Pass 2042 Comment
  CAS-BOT-BC200123  Trisetum canescens John Thomas Howell 1950-7-19 27802 Tulare Bakeoven to Hessian Meadows 2529 Comment
  CAS-BOT-BC193492  Trisetum cernuum John Thomas Howell 1953-7-16 29122 Mendocino In deep shade in canyon about 3 miles east of Point Arena. Comment
  CAS-BOT-BC200422  Trisetum spicatum John Thomas Howell 1948-7-28 25098 A Tulare Center Basin 3657 Comment
  CAS-BOT-BC200432  Trisetum spicatum John Thomas Howell 1944-8-12 20391 Tuolumne Gaylor Lakes 3291 Comment
  CAS-BOT-BC200453  Trisetum wolfii John Thomas Howell 1960-8-23 36445 Shasta Lassen Loop above Little Hot Springs Valley 2407 Comment
  SEINET12044746  Triteleia laxa J. T. Howell 1931-1 6468 Contra Costa Oakland Hills Comment
  CAS-BOT-BC528534  Triteleia peduncularis John Thomas Howell 1957-5-19 32362 Stanislaus Del Puerto Canyon Comment
  RSA216166  Triteleia peduncularis J. T. Howell 1966-7-20 41986 Marin John Thomas Howell Botanical Garden, Tiburon. Comment
  CAS-BOT-BC67494  Tropidocarpum gracile John Thomas Howell 1930-5-12 4871 Los Angeles 1 mile north of Acton. Comment
  SD56793  Tsuga heterophylla Darley F. Howe 1963-7-7 Humboldt 5 miles north of Orick on Highway #101 Comment
  SDSU2008  Tsuga heterophylla D. F. Howe 1963-7-7 3616 Humboldt 5 miles north of Orick on #101. Comment
  CAS-BOT-BC77671  Ulmus pumila John Thomas Howell 1964-10-22 40966 Kern Rosamond Comment
  CAS-BOT-BC91324  Umbellularia californica var. fresnensis John Thomas Howell 1958-7-28 34069 Fresno Sierra Nevada. Trail between Simpsons Meadow and Tehipite Valley, Middle Fork of the Kings River. 1676 Comment
  SD112640  Uropappus lindleyi Darley F. Howe 1964-5-18 3772 Kern 11.2 miles west of Lake Isabella on road to Glenville. 1460 Comment
  CAS-BOT-BC403999  Urtica dioica subsp. holosericea John Thomas Howell 1956-10-28 31939 San Francisco San Francisco. Mountain Lake, Presidio Comment
  CAS-BOT-BC404100  Urtica dioica subsp. holosericea John Thomas Howell 1962-7-7 38171 Kern Kern River Canyon 518 Comment
  CAS-BOT-BC404101  Urtica dioica subsp. holosericea John Thomas Howell 1962-7-7 38152 Kern Kern River Canyon 304 Comment
  CAS-BOT-BC404105  Urtica dioica subsp. holosericea John Thomas Howell 1960-3-25 35165 Kern Cane Brake Creek, w. side Walker Pass 1341 Comment
  CAS-BOT-BC404205  Urtica dioica subsp. holosericea John Thomas Howell 1947-7-21 23454 San Bernardino Lost Creek, San Bernardino Mts. 1920 Comment
  RSA54068  Urtica dioica subsp. holosericea J. T. Howell 1949-7-4 25354 Santa Cruz Near Felton. Comment
  RSA22197  Urtica dioica subsp. holosericea J. T. Howell 1938-8-2 13989 Placer 5 miles north of Brockway. Comment
  SEINET7271806  Vaccinium cespitosum var. paludicola J. T. Howell 1958-7-20 33693 Fresno Sierra Nevada, Granite Basin 3048 Comment
  RSA22057  Vahlodea atropurpurea J. T. Howell 1939-8-3 15003 Siskiyou Spirit Lake, Marble Mountains. 1829 Comment
  UC1042326  Valerianella locusta John Thomas Howell 1954-4-26 29161 Trinity between Weaverville and Douglas City Comment
  CAS-BOT-BC238181  Veronica wormskjoldii John Thomas Howell 1947-8-5 23769 Inyo Fifth Lake, Big Pine Lakes 3352 Comment
  SD61009  Vicia americana subsp. oregana Darley F. Howe 1964-8-1 3909 Lassen Warner Mountains, Modoc National Forest, Parsnip Creek 1890 Comment
  RSA480  Viola douglasii J. T. Howell 1927-6-10 360 San Bernardino Big Bear, San Bernardino Mts. 2043 Comment
  SD53288  Viola ocellata Darley F. Howe 1962-5-20 Mendocino 9.1 miles north of Willits on #101 366 Comment
  CAS-BOT-BC270093  Viola pinetorum var. grisea J. T. Howell 1950-7-17 27021 Tulare Templeton Meadows 2590 Comment
  CAS-BOT-BC270114  Viola pinetorum var. grisea John Thomas Howell 1942-7-27 17277 Tulare Between Mineral King and Timber Gap Comment
  CAS-BOT-BC198733  Vulpia bromoides John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1968-6-11 2387 Plumas Butterfly Valley, valley proper - Sierra Nevada Comment
  CAS-BOT-BC183095  Vulpia microstachys var. ciliata John Thomas Howell 1960-6-8 35478 Fresno 3 mi. westerly from Sequoia Lake 1402 Comment
  CAS-BOT-BC183155  Vulpia microstachys var. ciliata John Thomas Howell 1938-6-9 13909 Marin Laurel Dell, Mt. Tamalpais Comment
  CAS-BOT-BC183159  Vulpia microstachys var. ciliata John Thomas Howell 1945-5-27 20882 Marin Northeast of Mountain Theater, Mt. Tamalpais Comment
  CAS-BOT-BC183168  Vulpia microstachys var. ciliata John Thomas Howell 1964-4-28 40625 Mariposa 2 miles east of Morman Bar 670 Comment
  CAS-BOT-BC199944  Vulpia microstachys var. ciliata John Thomas Howell 1962-6-16 37562 Butte Magalia 731 Comment
  UCD93945  Vulpia microstachys var. confusa John Thomas Howell 1963-5-6 39180 Monterey Jolon. Santa Lucia Mountains. 298 Comment
  CAS-BOT-BC183997  Vulpia microstachys var. microstachys John Thomas Howell 1966-4-6 41458 Marin John Thomas Howell Botanical Garden, Tiburon Comment
  UCD94544  Vulpia microstachys var. pauciflora John Thomas Howell 1961-6-19 36518 Shasta Lassen Volcanic National Park. Manzanita Lake. 1783 Comment
  UCD94790  Vulpia myuros John Thomas Howell; Gordon H. True, Margaret Williams 1973-5-12 49190 Lassen Elysian Valley NW of Janesville. 1325 Comment
  CAS-BOT-BC185715  Vulpia myuros subsp. megalura John Thomas Howell 1956-4-16 31249 Alameda Alameda, Pam St. Comment
  CAS-BOT-BC185915  Vulpia octoflora var. hirtella John Thomas Howell 1946-5-12 21778 Marin Carson Ridge Comment
  CAS-BOT-BC77769  Woodsia scopulina John Thomas Howell 1942-8-3 17656 Tulare Hamilton Lakes 3048 Comment
  RSA44529  Woodsia scopulina J. T. Howell 1947-8-9 23946 Inyo Fifth Lake. Big Pine Lakes 3354 Comment
  CAS-BOT-BC383540  Wyethia mollis John Thomas Howell 1962-6-17 37714 Plumas Portola 1463 Comment
  CAS-BOT-BC383541  Wyethia mollis John Thomas Howell 1961-6-21 36651 Plumas Greenville 1097 Comment
  SEINET7297581 Image available X Stiporyzopsis bloomeri John Thomas Howell 1962-1 37841 Plumas The Buttes, n. Sierra Valley 1494 Comment
  CAS-BOT-BC383630  Xanthium spinosum John Thomas Howell 1954-9-6 30083 Calaveras 3 miles se. of Angels Camp Comment
  CAS-BOT-BC383647  Xanthium spinosum John Thomas Howell; H. Keith Wagnon 1980-5-27 53683 Plumas Quincy 1051 Comment
  CAS-BOT-BC530473  Zigadenus fontanus John Thomas Howell 1966-7-20 41984 Marin John Thomas Howell Botanical Garden, Tiburon Comment
  CAS-BOT-BC533132  Zigadenus paniculatus John Thomas Howell 1961-6-21 36645 Plumas Sierra Nevada, Greenville 1097 Comment



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