Search Results — 2000 specimen records retrieved (1528 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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A yellow cell in the column headed "?", for records with coordinates, indicates a discrepancy with respect to range as specified in the eFlora. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  SEINET12882926 Image available Carex spectabilis J. T. Howell 1944-1 20395 Unknown Comment
  SEINET4455775 Image available Agrostis aristiglumis J. T. Howell 1947-1 1411 Unknown Comment
  SEINET8133751 Image available Juncus drummondii J. T. Howell 1942-1 17371 Unknown Comment
  SEINET8135303 Image available Juncus hemiendytus var. hemiendytus J. T. Howell 1943-1 18031 Unknown Comment
  SEINET8154471 Image available Juncus phaeocephalus J. T. Howell 1929-1 4326 Unknown Comment
  CAS-BOT-BC38916  Arctostaphylos manzanita subsp. elegans John Thomas Howell 1930-3-23 4561 Napa About 1 mile se. of Mt. St. Helena Inn, Near Mt. St. Helena Comment
  UCD50819  Achnatherum nevadense John Thomas Howell 1963-8-22 40294 Alpine About 1/2 mile west of Monitor Pass, Alpine County. 2438 Comment
  CAS-BOT-BC213949  Amsinckia John Thomas Howell 1976-4-2 51553 Butte About 2 miles southeast of Chico 60 Comment
  CAS-BOT-BC213950  Amsinckia John Thomas Howell 1976-4-2 51552 Butte About 2 miles southeast of Chico 60 Comment
  CAS-BOT-BC384390  Silene bernardina John Thomas Howell; Gordon H. True 1967-8-9 43638 Tulare About 2.5 miles north of Blackrock Guard Station on Monache Jeep Trail. Kern Plateau 2682 Comment
  CAS-BOT-BC364582  Senecio vulgaris John Thomas Howell 1971-3-23 47580 Merced About 3 miles easterly from Stevison 30 Comment
  CAS-BOT-BC278484  Eriochloa acuminata John Thomas Howell; Gordon H. True 1967-9-21 43985 Tulare About 4 1/2 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC284858  Hordeum murinum subsp. glaucum John Thomas Howell 1966-3-29 41431 Tulare About 4 1/2 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC284860  Hordeum murinum subsp. glaucum John Thomas Howell 1965-5-9 41268 Tulare About 4 1/2 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC284863  Hordeum murinum subsp. glaucum John Thomas Howell; Gordon H. True 1968-5-15 44476 Tulare About 4 1/2 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC362086  Psilocarphus tenellus John Thomas Howell 1967-4-30 42152 Tulare About 4 1/2 miles east-northeast of Pixley. From N 1/3 of area 83 Comment
  CAS-BOT-BC506203  Fritillaria micrantha John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-24 54216 Plumas About 4 miles southeast of Mt. Hough on the road to Quincy 1584 Comment
  CAS-BOT-BC283305  Lolium multiflorum John Thomas Howell; Gordon H. True 1967-5-31 42535 Tulare About 4.5 miles ENE of Pixley, from SW corner of area 83 Comment
  CAS-BOT-BC168628  Atriplex John Thomas Howell 1967-11-4 44066 Tulare About 4.5 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC236528  Sorghum bicolor John Thomas Howell 1967-11-3 44045 Tulare About 4.5 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC137927  Alopecurus saccatus John Thomas Howell 1965-5-9 41271 Tulare About 4.5 miles east-northeast of Pixley. 83 Comment
  CAS-BOT-BC184849  Chloris virgata John Thomas Howell 1967-11-3 44040 Tulare About 4.5 miles east-northeast of Pixley. 83 Comment
  UCD131710  Erigeron bonariensis John Thomas Howell; Gordon True 1967-7-6 43227 Tulare About 4.5 miles east-northeast of Pixley. 83 Comment
  SEINET7568471 Image available Carex multicaulis John Thomas Howell, T. C. Fuller, G. D. Barbe 1980-5-20 53502 Trinity About 6 miles southwest of Trinity Center on road to Weaverville. 884 Comment
  CAS-BOT-BC361867  Psilocarphus oregonus John Thomas Howell; Gordon H. True 1971-5-26 47609 Yuba About 8 miles east of Marysville 30 Comment
  CAS-BOT-BC235896  Keckiella corymbosa John Thomas Howell 1946-7-7 22187 Marin Above Bootjack, Mt. Tamalpais Comment
  RSA734  Penstemon eatonii subsp. undosus J. T. Howell 1927-7-9 340 San Bernardino Above Cactus Flats, San Bernardino Mts 1951 Comment
  CAS-BOT-BC322739  Microseris paludosa John Thomas Howell 1947-5-14 23151 Marin Above Drakes Estero, wnw of Mt. Vision Comment
  CAS-BOT-BC201737  Deschampsia elongata John Thomas Howell 1943-5-23 18175 Alameda Above Mills College Comment
  CAS-BOT-BC234129  Elymus elymoides John Thomas Howell 1950-7-22 27218 Tulare Above timberline, Olancha Peak, Sierra Nevada 3657 Comment
  CAS-BOT-BC284087  Eragrostis pectinacea var. pectinacea John Thomas Howell; R. C. Barneby 1954-5-10 29330 Fresno 7 miles northeast of Academy, Sierra Nevada 198 Comment
  CAS-BOT-BC190338  Cynodon dactylon John Thomas Howell; Gordon H. True 1968-5-15 44496 Tulare Across Road 160. About 4.5 miles east northeast of Pixley. 83 Comment
  CAS-BOT-BC403349  Eschscholzia californica John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1968-6-11 2379 Plumas Across road from old homestead in Butterfly Valley Comment
  CAS-BOT-BC260004  Nassella lepida John Thomas Howell 1964-6-29 40739 San Luis Obispo Adjacent to the Protestant Cemetary, about 1 mile N of Cambria Comment
  CAS-BOT-BC377130  Tragopogon porrifolius John Thomas Howell 1964-6-29 40736 San Luis Obispo Adjacent to the Protestant Cemetery, about 1 mile north of Cambria Comment
  CAS-BOT-BC168182  Delphinium polycladon John Thomas Howell 1941-7-31 16546 Madera Agnew Pass Trail Comment
  CAS-BOT-BC444615  Montia chamissoi John Thomas Howell 1941-7-31 16544 Madera Agnew Pass Trail Comment
  CAS-BOT-BC8985  Delphinium depauperatum John Thomas Howell 1941-7-31 16554 Madera Agnew Pass Trail Comment
  CAS-BOT-BC20942  Carex heteroneura John Thomas Howell 1941-7-31 16556 Madera Agnew Pass Trail. Comment
  RSA26293  Sphaeromeria cana J. T. Howell 1941-8-8 16882 Madera Agnew Pass. Comment
  RSA285070  Lepidium latifolium J. T. Howell 1978-7-18 53189 San Mateo Airport Sheraton, Airport Blvd., Burlingame. Comment
  CAS-BOT-BC342150  Logfia filaginoides John Thomas Howell 1958-5-23 33232 Inyo Alabama Hills 1463 Comment
  RSA223689  Polypogon interruptus J. T. Howell 1956-8-12 31768 San Francisco Alemany Blvd. near Bayshore Freeway, San Francisco. Comment
  RSA577  Microsteris gracilis subsp. gracilis J. T. Howell 1928-3-18 886 San Bernardino Aliso Canyon, Rancho Santa Ana. [Orange County] 229 Comment
  CAS-BOT-BC79142  Quercus dumosa John Thomas Howell 1927-10-23 3168 San Bernardino Aliso Canyon, southern Puente Hills near the Santa Ana Canyon 274 Comment
  CAS-BOT-BC111693  Schoenoplectus pungens var. longispicatus John Thomas Howell 1962-7-9 38351 Kern Alkaline flats. Isabella 762 Comment
  SEINET10460931  Nemacladus sigmoideus Howell 1958-5-26 Howell 33472 Inyo Alluvial slope 4 miles west of Independence 1524 Comment
  CAS-BOT-BC284995  Hordeum depressum John Thomas Howell 1944-5-28 s.n. Marin Almonte Comment
  CAS-BOT-BC243239  Poa secunda subsp. secunda John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-4-29 53435 Siskiyou Along E Fork Scott River 2 miles E of Callahan on road to Gazelle 990 Comment
  CAS-BOT-BC262341  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte Along Feather River about 1 mi. west of Oroville 45 Comment
  CAS-BOT-BC288982  Conyza floribunda J. T. Howell 1956-10-21 31923 San Francisco Along Islais Creek E of Third St, San Francisco Comment
  CAS-BOT-BC272939  Ambrosia salsola John Thomas Howell; Gordon H. True 1971-6-16 47881 Kern Along Kelso Creek, 7 miles south of Weldon on road to Kelso Valley 914 Comment
  CAS-BOT-BC57937  Equisetum arvense John Thomas Howell 1970-9-22 47264 Kern Along Kern River between Kernville and River Kern. 822 Comment
  CAS-BOT-BC111254  Schoenoplectus californicus John Thomas Howell 1963-8-5 39942 Monterey Along Watsonville-San Juan Road, about 2 miles south of Aromas. Comment
  RSA223672  Leontodon leysseri J. T. Howell 1963-8-5 39900 Monterey Along Watsonville-San Juan road, about 2 miles south of Aromas. Comment
  CAS-BOT-BC243541  Setaria parviflora John Thomas Howell; Gordon H. True 1972-6-29 48933 Contra Costa Along ditches on Byron Hot Springs Road southeast of Byron Comment
  CAS-BOT-BC171451  Oenothera John Thomas Howell 1976-5-18 51733 Kern Along old road from Alta Sierra to Wofford Heights, 2.3 miles from Alta Station, Greenhorn Mountains, Sierra Nevada Comment
  CAS-BOT-BC247421  Poa pratensis John Thomas Howell 1956-4-29 31310 San Francisco Along railroad, Third & Berry streets, San Francisco Comment
  CAS-BOT-BC161584  Bromus sterilis John Thomas Howell 1949-4-6 25305 Sonoma Along road southwest of Sonoma. Comment
  CAS-BOT-BC226208  Gilia interior John Thomas Howell 1976-5-18 51738 Kern 2.3 mi. from Alta Sierra. Along old road from Alta Sierra to Wofford Heights, Greenhorn Mountains Comment
  CAS-BOT-BC243613  Setaria pumila John Thomas Howell 1954-9-6 30069 Calaveras Altaville Comment
  CAS-BOT-BC284041  Eragrostis minor John Thomas Howell 1954-9-6 30072 Calaveras Altaville Comment
  CAS-BOT-BC245219  Damasonium californicum John Thomas Howell 1934-6-15 12184 Modoc Alturas. Comment
  UC526196  Lotus humistratus John Thomas Howell 1934-6-15 12204 Modoc 2 mi e Alturas; Dorris Reservoir Comment
  CAS-BOT-BC342084  Leucanthemum vulgare John Thomas Howell 1959-9-24 34949 Plumas American Valley near Quincy 1051 Comment
  CAS-BOT-BC243816  Castilleja hololeuca John Thomas Howell 1928-5-19 3808 Ventura Anacapa Island Comment
  CAS-BOT-BC115586  Carex tumulicola John Thomas Howell 1946-5-16 21851 Marin Angel Island, SE side. Comment
  CAS-BOT-BC146545  Rosa gymnocarpa John Thomas Howell 1946-5-16 21893 Marin Angel Island, n. side Comment
  JEPS58949  Castilleja affinis subsp. affinis John Thomas Howell 1946-5-16 21864 Marin Angel Island, se side Marin County Angel Island Comment
  CAS-BOT-BC175943  Agrostis pallens John Thomas Howell 1946-5-16 21876 Marin Angel Island, south side Comment
  CAS-BOT-BC45467  Arctostaphylos nevadensis John Thomas Howell 1960-8-22 36385 Shasta Anklin Meadows. 1889 Comment
  CAS-BOT-BC231014  Plagiobothrys hispidulus John Thomas Howell 1943-8-8 19193 Tehama Anthony Peak Comment
  CAS-BOT-BC271415  Anisocarpus scabridus John Thomas Howell 1943-8-8 19174 Tehama Anthony Peak Comment
  UCD97071  Ranunculus parviflorus John Thomas Howell 1954-4-25 29153 Humboldt Arcata. Comment
  UCD89691  Piptatherum miliaceum John Thomas Howell 1954-10-30 30114 Alameda Arlington Ave. near city limits. Comment
  CAS-BOT-BC385897  Silene douglasii John Thomas Howell 1925-6-30 1265 El Dorado Armstrong's, Emerald Bay, Lake Tahoe Comment
  CAS-BOT-BC248937  Castilleja John Thomas Howell 1925-6-17 1160 El Dorado Armstrong's, Emerald Bay, Lake Tahoe 1889 Comment
  CAS-BOT-BC293283  Ericameria suffruticosa John Thomas Howell 1949-8-5 26024 Tulare Army Pass 3505 Comment
  CAS-BOT-BC389790  Silene sargentii John Thomas Howell 1949-8-5 26070 Inyo Army Pass 3657 Comment
  CAS-BOT-BC422181  Rumex californicus John Thomas Howell 1949-8-5 26023 Tulare Army Pass 3505 Comment
  RSA52335  Carex subnigricans J. T. Howell 1949-8-5 26040 Tulare Army Pass. 3659 Comment
  CAS-BOT-BC291200  Erechtites glomeratus John Thomas Howell 1963-5-18 39343 Monterey 1 mile south of and near Aromas 60 Comment
  JEPS54160  Thysanocarpus laciniatus John Thomas Howell 1925-3-22 818 Alameda Arroyo Mocho Comment
  CAS-BOT-BC268886  Eriogonum nudum var. auriculatum John Thomas Howell 1929-10-20 4529 Alameda Arroyo Mocho 13 miles from Livermore Comment
  CAS-BOT-BC287517  Ericameria linearifolia John Thomas Howell 1925-3-23 870 Alameda Arroyo Mocho at NE base of Cedar Mt Comment
  CAS-BOT-BC48474  Ceanothus cuneatus John Thomas Howell 1925-3-23 879 Alameda Arroyo Mocho at ne. base of Cedar Mt. Comment
  POM196442  Cercocarpus betuloides J. T. Howell 1925-3-22 833 Alameda Arroyo Mocho, at NE base of Cedar Mt. Comment
  CAS-BOT-BC295749  Erigeron petrophilus var. petrophilus John Thomas Howell 1954-11-3 30140 Monterey Arroyo Seco River Canyon, Santa Lucia Mts. Comment
  CAS-BOT-BC23014  Agoseris grandiflora var. grandiflora John Thomas Howell 1931-5-23 6525 Monterey Arroyo Seco River at Santa Lucia Camp, Santa Lucia Mts. Comment
  RSA0074488  Heterotheca camphorata J. T. Howell 1927-8-18 651 Monterey Arroyo Seco River, Santa Lucia Camp, Santa Lucia Mtns. 610 Comment
  CAS-BOT-BC312255  Euthamia occidentalis John Thomas Howell 1930-10-25 5673 Monterey Arroyo Seco River, Santa Lucia Mts. Comment
  CAS-BOT-BC236658  Sporobolus airoides John Thomas Howell 1927-6-21 2568 Orange Arroyo in hills on north side of Santa Ana Canyon 152 Comment
  CAS-BOT-BC85947  Quercus douglasii John Thomas Howell 1931-9-7 8063 San Benito Arroyo, 12 miles NW of Hernandez Comment
  GH414079  Tracyina rostrata J. T. Howell 1967-6-17 42599 Unknown on Arthur E. Cooley ranch, at confluence of Galloway and Dry creeks, northern Sonoma Co. 182 Comment
  CAS-BOT-BC89706  Lepidium latifolium John Thomas Howell 1978-7-18 53189 San Mateo At Airport Sheraton, Airport Boulevard, Burlingame. Comment
  CAS-BOT-BC339363  Lessingia glandulifera var. glandulifera John Thomas Howell 1927-8-2 2909 Riverside At Idyllwild, Strawberry Valley, Mt. San Jacinto Comment
  POM197817  Lessingia pectinata var. tenuipes John T. Howell 1927-8-27 3067 Merced At Merced River bridge between Delhi and Livingston. Comment
  CAS-BOT-BC174834  Silene aperta John Thomas Howell; Gordon H. True 1970-6-26 46819 Tulare At True Meadow, Kern Plateau 2225 Comment
  CAS-BOT-BC13294  Agoseris parviflora J. T. Howell; Gordon H. True 1970-7-14 5546 Sierra At Verdi Peak Lookout, Verdi Range 2560 Comment
  CAS-BOT-BC78933  Pinus monticola John Thomas Howell; Gordon H. True 1970-7-14 5515 Sierra At Verdi Peak Lookout, Verdi Range 2560 Comment
  CAS-BOT-BC216911  Achnatherum occidentale John Thomas Howell; Gordon H. True 1970-7-14 5510 Sierra At Verdi Peak Lookout, Verdi Range, Sierra County 2560 Comment
  CAS-BOT-BC456111  Zannichellia palustris John Thomas Howell 1927-11-26 3252 San Diego At Yaqui Well, San Felipe Wash, w. Colorado Desert Comment
  CAS-BOT-BC305902  Helminthotheca echioides John Thomas Howell 1956-6-3 31471 San Francisco At east end of Shafter Ave., San Francisco Comment
  CAS-BOT-BC248125  Eriogonum angulosum John Thomas Howell 1962-7-7 38144 A Kern At entrance to Kern Canyon 213 Comment
  CAS-BOT-BC222411  Amsinckia furcata John Thomas Howell 1931-3-18 5853 Fresno At head of Oil Canyon Comment
  CAS-BOT-BC440082  Claytonia perfoliata subsp. perfoliata John Thomas Howell 1931-3-18 5856 Fresno At head of Oil Canyon Comment
  CAS-BOT-BC304429  Grindelia hirsutula John Thomas Howell 1933-7-30 11472 Marin At head of Tomales Bay Comment
  CAS-BOT-BC176283  Thamnosma montana John Thomas Howell 1928-1-31 3320 Riverside At nw. end of Pinto Basin, n. Colorado Desert Comment
  CAS-BOT-BC305094  Grindelia hirsutula John Thomas Howell 1931-3-22 5942 San Luis Obispo At summit of Cuesta Pass Comment
  CAS-BOT-BC228248  Plagiobothrys hispidulus John Thomas Howell 1977-8-3 52568 Alpine At summit of Ebbetts Pass 2651 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-BC209809  Cornus glabrata John Thomas Howell 1929-10-12 4467 San Luis Obispo Atascadero Creek, 4.3 miles w. of Atascadero Comment
  CAS-BOT-BC271992  Eriogonum nudum var. pubiflorum John Thomas Howell 1929-10-12 4471 San Luis Obispo 8.4 miles w. of Atascadero on road to Morro Comment
  CAS-BOT-BC270022  Calycadenia multiglandulosa John Thomas Howell 1977-8-1 52418 Calaveras Avery 1033 Comment
  POM118062  Vulpia microstachys var. confusa J. T. Howell 1955-5-19 30201 Monterey Avila Ranch, Santa Lucia Mountains, west of King City. 457 Comment
  CAS-BOT-BC198837  Vulpia bromoides John Thomas Howell 1955-5-19 30203 Monterey Avila Ranch, Santa Lucia Mts. west of King City 457 Comment
  CAS-BOT-BC165775  Clarkia williamsonii John Thomas Howell 1954-5-19 29893 Mariposa 4 miles northwest of Bagby Comment
  CAS-BOT-BC407676  Arceuthobium americanum John Thomas Howell 1950-7-18 27038 Tulare Bakeoven Meadow, S Fork of Kern River 2468 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-BC213511  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1950-7-14 26818 Tulare Bakeoven Meadows, South Fork of Kern River - Sierra Nevada 2468 Comment
  CAS-BOT-BC200132  Trisetum canescens John Thomas Howell 1950-7-23 27254 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC216977  Achnatherum occidentale John Thomas Howell 1950-7-13 26775 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC238284  Keckiella rothrockii John Thomas Howell 1950-7-17 26990 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC284861  Hordeum murinum subsp. glaucum John Thomas Howell 1950-7-13 26784 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC82741  Arnica longifolia John Thomas Howell 1950-7-14 26804 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC99311  Symphyotrichum spathulatum John Thomas Howell 1950-7-14 26810 Tulare Bakeoven Meadows, South Fork of Kern River 2468 Comment
  CAS-BOT-BC234132  Elymus elymoides John Thomas Howell 1950-7-13 26785 Tulare Bakeoven Meadows, South Fork of Kern River, Sierra Nevada 2468 Comment
  UC1042549  Horkeliella purpurascens John Thomas Howell 1950-7-14 26819 Tulare Bakeoven Meadows; Sierra Nevada, South Fork of Kern River 2468 Comment
  CAS-BOT-BC301527  Eriophyllum lanatum var. integrifolium John Thomas Howell 1947-8-11 23992 Inyo Baker Lakes 3505 Comment
  CAS-BOT-BC342396  Logfia gallica John Thomas Howell 1958-5-21 33038 Kern 7 miles east of Bakersfield 213 Comment
  RSA766505  Eriogonum gracillimum J. T. Howell 1958-5-21 33034 Kern 7 miles east of Bakersfield. 213 Comment
  UC905065  Bromus madritensis subsp. madritensis John Thomas Howell 1947-4-27 23096 Marin Bald Mountain w of St. Anselmo; Bald Mountain Comment
  CAS-BOT-BC88487  Thysanocarpus curvipes John Thomas Howell 1947-4-27 23105 Marin Bald Mountain west of San Anselmo. Comment
  CAS-BOT-BC381920  Uropappus lindleyi John Thomas Howell 1947-4-27 23082 Marin Bald Mt. west of San Anselmo Comment
  RSA126401  Aira elegans J. T. Howell 1947-4-27 23085 Marin Bald Mt. west of San Anselmo Comment
  UCD58992  Bromus madritensis John Thomas Howell 1947-4-27 23096 Marin Bald Mt. west of San Anselmo. Comment
  CAS-BOT-BC309786  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte Bank of Butte Creek east of Butte City on road to Oroville 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-BC156234  Bromus catharticus John Thomas Howell 1973-11-1 50290 Kern Bank of Kern River, Hart Memorial Park near Bakersfield. 146 Comment
  CAS-BOT-BC128439  Salix lasiolepis var. lasiolepis John Thomas Howell 1959-9-21 34771 Plumas Bars of N. Fork Feather River near Belden - Sierra Nevada 701 Comment
  CAS-BOT-BC34833  Carex densa John Thomas Howell 1945-6-20 21125 Lake Bartlett Mountain. Between Pinnacle Rock and Low Gap. Comment
  CAS-BOT-BC74593  Rorippa curvisiliqua John Thomas Howell 1945-6-20 21122 Lake Bartlett Mountain. Between Pinnacle Rock and Low Gap. Comment
  CAS-BOT-BC189729  Danthonia californica John Thomas Howell 1945-6-21 21145 Lake Bartlett Mountain. Sawmill Flat. 1219 Comment
  CAS-BOT-BC218607  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True 1966-7-12 71786 Kern Bartolas Country 7.2 miles south of Cherry Hill and Cannell Meadow Roads, Sierra Nevada 2164 Comment
  CAS-BOT-BC221024  Trichostema austromontanum subsp. austromontanum John Thomas Howell; Gordon H. True 1966-7-12 41804 Kern Bartolas Country 7.2 miles south of Cherry Hill and Cannell Meadow roads, Kern Plateau 2164 Comment
  UCD47425  Quercus vacciniifolia John Thomas Howell; Gordon H. True 1969-6-25 45846 Sierra 3 miles north of Bassetts on road to Gold Lake, Sierra County. 1950 Comment
  CAS-BOT-BC137757  Anthoxanthum odoratum John Thomas Howell 1945-6-18 20969 Lake Baumgartner Meadow north of Cobb Mountain. Comment
  CAS-BOT-BC34993  Carex densa John Thomas Howell 1945-6-18 20968 Lake Baumgartner Meadow north of Cobb Mountain. Comment
  CAS-BOT-BC413462  Parietaria judaica John Thomas Howell 1956-7-1 31632 San Francisco Bay St. near Columbus Av., San Francisco Comment
  CAS-BOT-BC287335  Cynara cardunculus John Thomas Howell 1956-11-14 31961 San Mateo Bayshore Highway just S of Main St, Redwood City Comment
  RSA88326  Polygonum patulum J. T. Howell 1953-6-3 29057 San Mateo Bayshore Hwy, Redwood City. Comment
  RSA217965  Rumex acetosella J. T. Howell 1957-5-17 s.n. San Francisco Bayview Hills Comment
  SD71241  Chenopodium californicum John Thomas Howell 1957-5-17 32315 San Francisco Bayview Hills Comment
  JEPS12658  Symphoricarpos rotundifolius var. parishii John Thomas Howell 1927-7-10 2759 San Bernardino near Bear Valley (on Mill Creek Road); San Bernardino Mts. 2225 Comment
  CAS-BOT-BC176982  Salsola tragus John Thomas Howell 1959-9-24 34977 Plumas Beckwourth 1493 Comment
  RSA118  Calochortus splendens J. T. Howell 1928-4-7 895 Orange Bee Canyon, Rancho Santa Ana 152 Comment
  CAS-BOT-BC72271  Polystichum imbricans subsp. curtum John Thomas Howell 1959-9-21 34743 Plumas Belden 701 Comment
  CAS-BOT-BC176542  Atriplex polycarpa John Thomas Howell 1928-11-4 4086 Riverside Below Palm [Canon] Canyon on road from Indio to Palm Springs Comment
  CAS-BOT-BC177701  Astragalus congdonii John Thomas Howell; Gordon H. True 1970-6-10 46577 Tulare Below Potwisha. Sequoia Park 579 Comment
  CAS-BOT-BC58278  Antennaria media John Thomas Howell 1948-7-19 24780 Inyo Bench Lake 3352 Comment
  CAS-BOT-BC199595  Trisetum canescens John Thomas Howell 1946-8-30 22928 El Dorado Between Angora Lakes and Angora Lookout Comment
  RSA127236  Vulpia microstachys var. pauciflora J. T. Howell 1946-5-14 21838 Marin Between Barths Retreat and Potrero Meadow, Mt. Tamalpais. Comment
  CAS-BOT-BC241185  Castilleja applegatei subsp. pinetorum John Thomas Howell 1942-8-5 17690 Tulare Between Big Arroyo and Chagoopa Plateau Comment
  CAS-BOT-BC310425  Eucephalus breweri John Thomas Howell 1942-7-31 17428 Tulare Between Big Arroyo and Chagoopa Plateau Comment
  CAS-BOT-BC47849  Ceanothus cordulatus John Thomas Howell 1942-8-5 17712 Tulare Between Big Arroyo and Chagoopa Plateau Comment
  CAS-BOT-BC97448  Artemisia tridentata subsp. tridentata John Thomas Howell 1942-8-5 17710 Tulare Between Big Arroyo and Chagoopa Plateau Comment
  A355459  Taxus brevifolia J. T. Howell 1937-7-26 13563 Unknown Between Big Flat and Carbou Gulch, Siskiyou Co. Comment
  CAS-BOT-BC59129  Sedum spathulifolium John Thomas Howell 1937-7-26 13565 Siskiyou Between Big Flat and Caribou Gulch. Comment
  CAS-BOT-BC127429  Agrostis densiflora John Thomas Howell 1945-7-29 21357 Marin Between Bolinas radio station and Rio Honda. Comment
  CAS-BOT-BC22323  Carex harfordii John Thomas Howell 1945-7-29 21360 Marin Between Bolinas radio station and Rio Honda. Comment
  CAS-BOT-BC273285  Calycadenia fremontii John Thomas Howell 1952-9-11 s.n. Marin Between Bootjack Camp and swampy slope just to the east, Mt. Tamalpais Comment
  CAS-BOT-BC126176  Salix scouleriana John Thomas Howell 1969-8-7 45885 Lassen Between Butte Lake and Cinder Cone, Lassen Park Comment
  RSA97189  Downingia insignis J. T. Howell 1953-4-26 28935 Contra Costa Between Byron and Byron Hot Springs. Comment
  CAS-BOT-BC45123  Anaphalis margaritacea John Thomas Howell 1940-7-29 15677 Fresno Between Charlotte Creek and Junction Meadow, Bubbs Creek Comment
  GH401004  Phacelia novenmillensis J. T. Howell & G. H. True 1967-7-3 42767 Unknown Between Chimney and Lamont Meadows. Kern Plateau 1950 Comment
  CAS-BOT-BC9341  Carex fracta John Thomas Howell 1958-8-17 34542 Madera Between Cora Lake and the Niche, East Fork of Granite Creek. 2560 Comment
  CAS-BOT-BC106578  Baileya pleniradiata John Thomas Howell 1927-7-9 2679 San Bernardino Between Deadman's Point and Box S Ranch, Mojave Desert 914 Comment
  CAS-BOT-BC115389  Carex utriculata John Thomas Howell 1943-7-23 18739 Nevada Between Donner Pass and West Lake. Comment
  CAS-BOT-BC69989  Isoetes bolanderi John Thomas Howell 1943-7-23 18742 Nevada Between Donner Pass and West Lake. Comment
  SEINET2030029 Image available Arnica mollis John Thomas Howell 1940-8-5 15996 Tulare Between East Lake and Reflection Lake Comment
  CAS-BOT-BC85126  Arnica mollis John Thomas Howell 1944-8-8 20107 Tuolumne Between Elizabeth Lake and Tuolumne Meadows Comment
  CAS-BOT-BC288772  Cirsium remotifolium John Thomas Howell 1939-8-4 15033 Siskiyou Between Elk Mt and Marble River, Marble Mts Comment
  CAS-BOT-BC362724  Raillardella argentea John Thomas Howell 1946-7-16 22478 Inyo Between Gem and Long lakes, Rock Creek Lake Basin Comment
  GH356687  Ephedra viridis J. T. Howell & G. H. True 1967-5-30 42457 Unknown Between Lamont Meadow and Long Valley 1737 Comment
  CAS-BOT-BC116967  Carex straminiformis John Thomas Howell 1942-8-3 17612 Tulare Between Little Five Lakes and Kaweah Gap. Comment
  CAS-BOT-BC286230  Deinandra corymbosa John Thomas Howell 1930-8-3 5418 Monterey Between Mission San Carlos and Del Monte Comment
  CAS-BOT-BC81257  Juniperus occidentalis John Thomas Howell 1950-7-26 27340 Tulare Between Monache and Summit Meadows 2590 Comment
  CAS-BOT-BC105127  Quercus kelloggii John Thomas Howell 1960-8-21 36293 Tehama Between Morgan and Morgan Summit 1676 Comment
  CAS-BOT-BC167797  Petalonyx thurberi John Thomas Howell 1927-8-1 2896 San Bernardino Between Morongo Valley and Warren's Well, s. Mojave Desert 914 Comment
  CAS-BOT-BC234880  Lonicera subspicata var. denudata John Thomas Howell 1963-6-22 39542 Monterey Between Mustang Summit and Priest Valley 670 Comment
  CAS-BOT-BC243012  Poa secunda subsp. secunda John Thomas Howell 1933-4-22 11057 San Benito Between Paicines and Pinnacles Post Office Comment
  CAS-BOT-BC259830  Nassella cernua John Thomas Howell 1933-4-22 11053 San Benito Between Paicines and Pinnacles Post Office Comment
  A246855  Pinus balfouriana J. T. Howell 1940-8-8 16061 Unknown Between Reflection Lake and Harrison Pass Comment
  CAS-BOT-BC103685  Salix eastwoodiae John Thomas Howell 1940-8-1 15846 Tulare Between Reflection Lake and Harrison Pass 3505 Comment
  CAS-BOT-BC78150  Pinus balfouriana John Thomas Howell 1940-8-8 16061 Tulare Between Reflection Lake and Harrison Pass Comment
  CAS-BOT-BC119146  Carex phaeocephala John Thomas Howell 1940-8-1 15835 Tulare Between Reflection Lake and Harrison Pass. Comment
  CAS-BOT-BC21001  Carex helleri John Thomas Howell 1940-8-1 15865 Tulare Between Reflection Lake and Harrison Pass. Comment
  CAS-BOT-BC31799  Carex mariposana John Thomas Howell 1940-8-1 15782 Tulare Between Reflection Lake and Harrison Pass. 3352 Comment
  CAS-BOT-BC34896  Carex deflexa var. boottii John Thomas Howell 1940-8-1 15834 Tulare Between Reflection Lake and Harrison Pass. Comment
  POM261550  Delphinium hansenii J. T. Howell 1940-8-1 15818 Tulare Between Reflection Lake and Harrison Pass. Comment
  RSA26250A  Koeleria macrantha J. T. Howell 1940-8-8 16039 Tulare Between Reflection Lake and Harrison Pass. Comment
  RSA34675  Epilobium glaberrimum subsp. fastigiatum J. T. Howell 1946-7-27 22808 Inyo Between Ruby Lake and Mosquito Flat. Rock Creek Lake Basin. Comment
  CAS-BOT-BC451831  Triglochin maritima John Thomas Howell 1944-6-25 19659 Marin Between Santa Venetia and Chinese Camp Comment
  CAS-BOT-BC175671  Viola lobata John Thomas Howell 1977-6-21 s.n. Plumas Between Seneca and Butt Valley Reservoir Comment
  CAS-BOT-BC119979  Carex multicostata John Thomas Howell 1944-8-12 20344 Tuolumne Between Tioga Pass and Gaylor Lakes. Comment
  CAS-BOT-BC320420  Holocarpha virgata John Thomas Howell 1954-9-6 30100 Tuolumne Between Tuttletown and Rawhide Comment
  RSA201302  Achnatherum occidentale subsp. californicum J. T. Howell 1960-7-20 35787 Plumas Between boiling Springs Lake and Terminal Geyser. 1860 Comment
  CAS-BOT-BC35039  Carex densa John Thomas Howell 1943-5-2 17935 Marin Big Carson Canyon. Comment
  UC574869  Horkelia fusca subsp. parviflora John Thomas Howell 1937-7-21 13168 Siskiyou near Big Flat (South Fork of Salmon River) 1524 Comment
  CAS-BOT-BC22795  Agoseris heterophylla John Thomas Howell 1937-7-21 13224 Trinity Big Flat Comment
  UC909676  Juncus hemiendytus var. hemiendytus John Thomas Howell 1937-7-21 13213 Trinity Big Flat; ; Big Flat, Trinity Co. Comment
  CAS-BOT-BC117372  Carex sartwelliana John Thomas Howell 1946-7-30 22845 Mariposa Big Oak Flat Road at Tamarack Creek, Yosemite Nat Park. Comment
  CAS-BOT-BC203846  Elymus X hansenii John Thomas Howell 1947-8-13 24056 Inyo Big Pine Creek Trail 2895 Comment
  CAS-BOT-BC249461  Castilleja applegatei subsp. pallida John Thomas Howell 1947-8-13 24053 Inyo Big Pine Creek Trail 2895 Comment
  CAS-BOT-BC256001  Poa pratensis John Thomas Howell 1947-8-16 24141 Inyo Big Pine Lakes Trail 2804 Comment
  CAS-BOT-BC270910  Eriogonum microthecum var. ambiguum John Thomas Howell 1947-8-16 24155 Inyo Big Pine Lakes Trail 2743 Comment
  CAS-BOT-BC297051  Erigeron breweri var. breweri John Thomas Howell 1947-8-13 24089 Inyo Big Pine Lakes Trail 2895 Comment
  CAS-BOT-BC30385  Ageratina occidentalis John Thomas Howell 1947-8-13 24079 Inyo Big Pine Lakes Trail 2895 Comment
  CAS-BOT-BC127252  Agrostis exarata John Thomas Howell 1947-8-16 24142 Inyo Big Pine Lakes Trail. 2804 Comment
  RSA44195  Castilleja linariifolia J. T. Howell 1947-8-13 24044 Inyo Big Pine Lakes Trail. 2896 Comment
  RSA0041766  Opuntia polyacantha var. erinacea J. T. Howell 1947-8-16 24162 Inyo Big Pine Lakes Trail. 2622 Comment
  CAS-BOT-BC22124  Carex heteroneura John Thomas Howell 1947-8-5 23744 Inyo Big Pine Lakes. Fifth Lake. 3352 Comment
  CAS-BOT-BC77240  Antennaria microphylla John Thomas Howell 1947-8-8 23906 Inyo Big Pine Lakes. Third to Fifth Lake. 3200 Comment
  CAS-BOT-BC16162  Boechera davidsonii John Thomas Howell 1947-8-7 23849 Inyo Big Pine Lakes. West of Sixth Lake. 3413 Comment
  CAS-BOT-BC18525  Carex abrupta John Thomas Howell 1947-8-6 23823 Inyo Big Pines Lakes. Fourth Lake. 3291 Comment
  CAS-BOT-BC23354  Arctostaphylos glandulosa subsp. cushingiana John Thomas Howell 1944-4-13 19382 Marin Big Rock Ridge west of Hamilton Field Comment
  CAS-BOT-BC296848  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-11 7979 Lassen Big Valley Mts. Comment
  CAS-BOT-BC108379  Salix exigua John Thomas Howell 33620 Inyo Bishop - Sierra Nevada Comment
  CAS-BOT-BC305783  Helianthus nuttallii John Thomas Howell 1950-8-29 27457 Inyo Bishop Comment
  CAS-BOT-BC321101  Layia glandulosa John Thomas Howell 1958-5-28 33527 Inyo Bishop Creek 1950 Comment
  UCD100851  Eriogonum pusillum John Thomas Howell 1963-8-21 40245 Inyo Bishop Creek. 1950 Comment
  UCD128874  Ambrosia salsola John Thomas Howell 1958-5-28 33597 Inyo Bishop Creek. 1524 Comment
  CAS-BOT-BC156256  Bromus catharticus John Thomas Howell 1958-5-29 33612 Inyo Bishop. 1264 Comment
  CAS-BOT-BC163879  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1957-4-30 32130 San Benito 5.3 miles sw. of Bitterwater 365 Comment
  CAS-BOT-BC224446  Cuscuta californica John Thomas Howell 1943-8-10 19247 Glenn Black Butte Comment
  CAS-BOT-BC281011  Melica stricta John Thomas Howell 1943-8-6 19127 Glenn Black Butte Comment
  CAS-BOT-BC72309  Polystichum imbricans subsp. imbricans John Thomas Howell 1943-8-6 19113 Glenn Black Butte Comment
  RSA88341  Aster brickellioides J. T. Howell 1943-8-10 19245 Glenn Black Butte Comment
  CAS-BOT-BC508539  Maianthemum racemosum subsp. amplexicaule John Thomas Howell 1943-8-10 19249 Glenn Black Butte Comment
  CAS-BOT-BC25488  Boechera retrofracta John Thomas Howell 1943-8-6 19118 Glenn Black Butte. Comment
  CAS-BOT-BC197380  Thinopyrum intermedium subsp. barbulatum John Thomas Howell 1962-7-8 38225 Kern Black Mt. burn, Greenhorn Mountains 1066 Comment
  CAS-BOT-BC429153  Micranthes odontoloma John Thomas Howell 1939-8-8 15149 Siskiyou Black Mt., Marble Mts. Comment
  CAS-BOT-BC90783  Artemisia ludoviciana subsp. ludoviciana John Thomas Howell 1939-8-8 15146 Siskiyou Black Mt., Marble Mts. Comment
  CAS-BOT-BC217022  Achnatherum occidentale John Thomas Howell 1947-7-18 23391 Los Angeles Blue Ridge, San Gabriel Mountains 2590 Comment
  CAS-BOT-BC268207  Eriogonum umbellatum var. munzii John Thomas Howell 1947-7-18 23399 Los Angeles Blue Ridge, San Gabriel Mts. 2590 Comment
  CAS-BOT-BC163063  Prunus emarginata John Thomas Howell 1960-8-18 36044 Tehama Bluff Falls - near Lassen Volcanic National Park 1981 Comment
  CAS-BOT-BC106706  Baccharis salicifolia John Thomas Howell 1981-10-13 54618 Sutter Bobelaine Audubon Sactuary, Feather River at mouth of Bear River 9 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
  POM180620  Lomatium vaginatum J. T. Howell 1930-6-8 5248 Sonoma 1 mile east of Bodega Bay. Comment
  POM202854  Castilleja wightii J. T. Howell 1934-3-3 11735 Sonoma Bodega Bay. Comment
  CAS-BOT-BC318190  Packera breweri John Thomas Howell; Gordon H. True 1971-6-17 48082 Kern 3.5 miles east of Bodfish Gap 1676 Comment
  CAS-BOT-BC216104  Eriodictyon californicum John Thomas Howell; Gordon H. True 1971-6-15 47714 Kern 0.5 miles south of Bodfish Gap on road to Havilah, Sierra Nevada 1097 Comment
  CAS-BOT-BC185676  Vulpia myuros subsp. megalura John Thomas Howell 1960-7-20 35767 Plumas Boiling Springs Lake 1798 Comment
  CAS-BOT-BC70675  Cystopteris fragilis John Thomas Howell 1960-7-20 35749 Plumas Boiling Springs Lake 1798 Comment
  CAS-BOT-BC212561  Ribes montigenum John Thomas Howell 1943-7-16 18439 Nevada Boreal Ridge, W side of Donner Pass near Norden 2133 Comment
  CAS-BOT-BC265135  Eriogonum umbellatum var. nevadense John Thomas Howell 1943-7-16 18432 Nevada Boreal Ridge, West side of Donner Pass near Norden 2133 Comment
  CAS-BOT-BC434521  Boerhavia diffusa John Thomas Howell 1977-3-10 52319 San Diego Borrego Springs, Colorado Desert 182 Comment
  JEPS19110  Isocoma acradenia var. eremophila John Thomas Howell 1927-11-25 3208 San Diego central part of Borrego Valley Borrego Valley Comment
  RSA520  Bowlesia incana J. T. Howell 1928-2-26 853 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA747  Sambucus mexicana J. T. Howell 1927-6-1 1 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC197060  Echinochloa crus-galli John Thomas Howell 1976-10-29 52273 El Dorado Bottom of Folsom Lake at Brown's Ravine boat landing 121 Comment
  CAS-BOT-BC281283  Melica geyeri John Thomas Howell; et al. 1982-4-28 54674 Sonoma Bouverie Audubon Preserve, about 1.5 miles E of Glen Ellen near Stuart Creek 137 Comment
  CAS-BOT-BC303498  Gamochaeta ustulata John Thomas Howell; Catherine Best; Gordon H. True 1982-5-6 54696 Sonoma Bouverie Audubon Preserve, about 1.5 miles E of Glen Ellen near Stuart Creek 137 Comment
  CAS-BOT-BC226544  Leptosiphon acicularis John Thomas Howell; Catherine Best; Wilma Follette; Mary Wells 1982-4-28 54664 Sonoma Bouverie Audubon Preserve, about 1.5 miles east of Glen Ellen near Stuart Creek 137 Comment
  CAS-BOT-BC339933  Sphaeromeria cana John Thomas Howell 1946-7-16 22443 Inyo Box Lake, Rock Creek Lake Basin 3200 Comment
  RSA562  Asclepias fascicularis J. T. Howell 1927-7-9 306 San Bernardino Box S Springs, Mojave Desert. 1082 Comment
  CAS-BOT-BC342153  Logfia filaginoides John Thomas Howell 1928-4-2 3644 Inyo 2 miles east of Bradbury Well, Black Mts. Comment
  CAS-BOT-BC423253  Oxystylis lutea John Thomas Howell 1928-4-1 3619 Inyo Bradbury Well, Black Mts. Comment
  RSA54115  Artemisia cana subsp. bolanderi J. T. Howell 1945-9-28 21523 Mono 4 miles north of Bridgeport Comment
  CAS-BOT-BC153655  Diplacus jepsonii John Thomas Howell 1960-8-19 36126 Tehama Brokeoff Mt. Trail 2346 Comment
  RSA554  Limonium californicum var. mexicanum J. T. Howell 1927-10-29 771 Orange Bryant Ranch near Long Beach. 15 Comment
  CAS-BOT-BC210797  Achnatherum nelsonii John Thomas Howell 1948-7-26 25014 Tulare Bubbs Creek Canyon 3139 Comment
  CAS-BOT-BC102805  Salix boothii John Thomas Howell 1948-7-23 24934 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows 3048 Comment
  CAS-BOT-BC48568  Ceanothus cordulatus John Thomas Howell 1948-7-23 24943 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows 3048 Comment
  CAS-BOT-BC110795  Juncus mertensianus John Thomas Howell 1948-7-22 24867 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows. 3048 Comment
  CAS-BOT-BC148871  Bromus carinatus var. marginatus John Thomas Howell 1948-7-23 24937 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows. 3048 Comment
  RSA38321  Juncus mexicanus J. T. Howell 1948-7-21 24808 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows. 2896 Comment
  RSA38323  Juncus parryi J. T. Howell 1948-7-23 24924 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows. 2896 Comment
  RSA38525  Carex disperma J. T. Howell 1948-7-21 24817 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows. 2896 Comment
  RSA38540  Carex lemmonii J. T. Howell 1948-7-22 24888 Fresno Bubbs Creek Canyon in vicinity of Vidette Meadows. 2896 Comment
  CAS-BOT-BC151389  Diplacus viscidus John Thomas Howell 1954-5-18 29783 Amador 2 miles north-northeast of Buena Vista - Sierra Nevada 91 Comment
  SD71385  Eriogonum apricum var. apricum John T. Howell 1954-6-8 30000 Amador 2 miles north-northeast of Buena Vista 91 Comment
  RSA33322  Juncus mertensianus J. T. Howell 1948-7-24 24964 Fresno Bullfrog Lake. 3241 Comment
  CAS-BOT-BC157097  Rubus ursinus John Thomas Howell 1938-6-4 13888 San Mateo Burlingame Comment
  CAS-BOT-BC361998  Psilocarphus tenellus John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1967-7-12 2140 Plumas Butterfly Botanical Area and Vicinity 1097 Comment
  CAS-BOT-BC25411  Boechera retrofracta John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight 1969-6-24 2437 Plumas Butterfly Botanical Area and Vicinity. From vicinity of Butterfly Creek mouth. 883 Comment
  CAS-BOT-BC377093  Tragopogon dubius John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1967-7-10 2165 Plumas Butterfly Botanical Area and Vicinity. Mouth of Butterfly Creek 883 Comment
  CAS-BOT-BC17146  Delphinium uliginosum John Thomas Howell 1965-5-27 41321 Lake Butts Canyon Comment
  UCD92599  Setaria parviflora John Thomas Howell; Gordon H. True 1972-6-29 48933 Contra Costa Byron Hot Springs. Road southeast of Byron. Comment
  CAS-BOT-BC20994  Carex helleri John Thomas Howell 1949-8-9 26190 Tulare CIrque Peak. 3733 Comment
  CAS-BOT-BC118343  Carex praegracilis John Thomas Howell 1971-5-23 47570 Merced Ca 2 mi E of Applegate Road on Merced-Gustine road. 45 Comment
  CAS-BOT-BC168291  Atriplex canescens var. canescens John Thomas Howell 1927-7-9 2709 San Bernardino Cactus Flat, desert side of San Bernardino Mts. 1828 Comment
  RSA0116433  Pinus contorta var. murrayana J. T. Howell 1927-8-29 716 Tulare Cahoon Meadow, Sequoia National Park 2591 Comment
  RSA631  Phacelia ramosissima var. subglabra J. T. Howell 1927-8-29 719 Tulare Cahoon Meadow, Sequoia National Park. 2500 Comment
  RSA223691  Setaria verticillata J. T. Howell 1957-9-1 32942 San Francisco California Street, Near 16th Avenue Comment
  CAS-BOT-BC451578  Lilaea scilloides John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-5-17 52918 Calaveras Camanche Parkway South between Burson Road and Camanche Reservoir 152 Comment
  CAS-BOT-BC221859  Stenotaphrum secundatum John Thomas Howell 1964-6-29 40807 San Luis Obispo Cambria Comment
  CAS-BOT-BC211631  Frankenia salina John Thomas Howell 1929-10-13 4502 San Luis Obispo 2 1/2 miles n. of Cambria Comment
  CAS-BOT-BC433814  Rumex pulcher John Thomas Howell 1929-10-13 4499 San Luis Obispo 2 1/2 miles n. of Cambria Comment
  CAS-BOT-BC189777  Dactylis glomerata John Thomas Howell 1964-6-30 40883 San Luis Obispo Cambria. Comment
  CAS-BOT-BC421138  Pterostegia drymarioides John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey 1978-4-5 52775 Calaveras Camp Nine Road northeast of Vallecito 609 Comment
  CAS-BOT-BC365798  Soliva sessilis John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey 1978-4-5 52811 Calaveras Camp Nine Road northeast of Vallecito 609 Comment
  CAS-BOT-BC428773  Micranthes californica John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey 1978-4-5 52770 Calaveras Camp Nine Road northeast of Vallecito. 609 Comment
  CAS-BOT-BC246670  Poa howellii John Thomas Howell 1944-5-21 19487 Marin Canyon below Phoenix Lake, Mt. Tamalpais Comment
  CAS-BOT-BC129784  Salix bonplandiana John Thomas Howell 1930-5-13 5013 Kern Canyon bottom, 3 miles west of summit of Walker Pass Comment
  RSA300137  Poa secunda J. T. Howell 1967-6-23 42672 Plumas Canyon of Butterfly Creek just above its mouth 976 Comment
  CAS-BOT-BC377091  Tragopogon dubius John Thomas Howell 1977-8-11 52672 Plumas Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir 1676 Comment
  CAS-BOT-BC295996  Erigeron divergens John Thomas Howell 1977-8-11 52673 Plumas Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir, Sierra Nevada 1676 Comment
  CAS-BOT-BC154904  Diplacus whitneyi John Thomas Howell; Gordon H. True 1966-7-13 41883 Tulare Canyon of Poison Meadow Creek on Cherry Hill Road, Kern Plateau 2194 Comment
  CAS-BOT-BC166556  Epilobium canum subsp. latifolium John Thomas Howell; Gordon H. True 1966-7-13 41914 Tulare Canyon of Poison Meadow Creek on Cherry Hill Road, Kern Plateau 2194 Comment
  CAS-BOT-BC306794  Helenium bigelovii John Thomas Howell; Gordon H. True 1966-7-13 41895 Tulare Canyon of Poison Meadow Creek on Cherry Hill Road, Kern Plateau 2194 Comment
  UC710485  Carex nervina John Thomas Howell 1943-8-5 19107 Glenn Canyon of Snow Basin Creek Comment
  A380639  Ribes nevadense J. T. Howell 1937-7-26 13528 Unknown Caribou Basin, Salmon-Trinity Alps 1981 Comment
  CAS-BOT-BC82664  Arnica latifolia John Thomas Howell 1937-7-24 13380 Siskiyou Caribou Basin, Salmon-Trinity Alps 2286 Comment
  CAS-BOT-BC40142  Arctostaphylos montereyensis John Thomas Howell 1970-3-31 46499 Monterey Carmel River, Carmel Valley Comment
  CAS-BOT-BC93210  Platanus racemosa John Thomas Howell 1970-3-31 46495 Monterey Carmel River, Carmel Valley. Comment
  RSA127603  Arctostaphylos glandulosa subsp. glandulosa J. T. Howell 1952-3-5 28304 Monterey 2 miles east of Carmel Valley community center. Comment
  POM225343  Eryngium armatum J. T. Howell 1931-5-22 6495 Monterey Carmel Valley near Carmel Comment
  CAS-BOT-BC216212  Malacothamnus palmeri John Thomas Howell; T. H. Kearney 1951-5-6 27491 Monterey 7 miles from coast highway on road to Carmel Valley. Brushy slope Comment
  CAS-BOT-BC214271  Salvia dorrii var. pilosa John Thomas Howell 1958-5-25 33366 Inyo Carroll Creek 1676 Comment
  CAS-BOT-BC523056  Triteleia ixioides subsp. anilina John Thomas Howell; Alice Eastwood 1940-6-17 8457 Alpine Carson Pass Comment
  CAS-BOT-BC224508  Cuscuta californica John Thomas Howell 1942-6-21 16986 Marin Carson Ridge Comment
  CAS-BOT-BC439224  Claytonia exigua subsp. exigua John Thomas Howell 1946-3-24 21579 Marin Carson Ridge Comment
  CAS-BOT-BC499200  Kopsiopsis strobilacea John Thomas Howell 1942-6-21 16993 Marin Carson Ridge Comment
  CAS-BOT-BC499305  Chlorogalum pomeridianum var. divaricatum John Thomas Howell 1942-6-21 16991 Marin Carson Ridge Comment
  RSA31380  Epilobium brachycarpum J. T. Howell 1942-9-13 17867 Marin Carson Ridge Comment
  CAS-BOT-BC258972  Phalaris californica John Thomas Howell 1946-5-12 21827 Marin Carson country Comment
  CAS-BOT-BC151946  Diplacus douglasii John Thomas Howell 1946-3-24 21587 Marin Carson country Comment
  CAS-BOT-BC195585  Catapodium rigidum John Thomas Howell 1945-8-12 21378 Marin Cascade Canyon, Mill Valley Comment
  CAS-BOT-BC174146  Eremogone aculeata John Thomas Howell 1943-7-20 18607 Nevada Castle Peak Comment
  SEINET3841330 Image available Limnanthes alba var. versicolor John Thomas Howell 1964-5-13 40705 Shasta Cayton Creek, 5 miles north of Burney Falls Comment
  CAS-BOT-BC46886  Arctostaphylos viscida subsp. mariposa John Thomas Howell 1958-7-19 33656 Fresno Cedar Grove 1402 Comment
  CAS-BOT-BC158377  Drymocallis lactea var. lactea John Thomas Howell 1948-7-28 25108 Tulare Center Basin 3657 Comment
  CAS-BOT-BC271226  Koeleria pyramidata John Thomas Howell 1948-7-26 25045 Tulare Center Basin 3413 Comment
  CAS-BOT-BC389859  Silene sargentii John Thomas Howell 1948-7-26 25040 Tulare Center Basin 3413 Comment
  CAS-BOT-BC79865  Antennaria microphylla John Thomas Howell 1948-7-26 25069 Tulare Center Basin 3413 Comment
  CAS-BOT-BC116955  Carex straminiformis John Thomas Howell 1948-7-26 25053 Tulare Center Basin. 3413 Comment
  CAS-BOT-BC34260  Carex capitata John Thomas Howell 1948-7-26 25071 Tulare Center Basin. 3413 Comment
  CAS-BOT-BC34902  Carex deflexa var. boottii John Thomas Howell 1948-7-28 25104 Tulare Center Basin. 3657 Comment
  CAS-BOT-BC113754  Eleocharis acicularis John Thomas Howell 1942-8-5 177745 Tulare Chagoopa Plateau Comment
  CAS-BOT-BC117833  Carex specifica John Thomas Howell 1942-8-1 17565 Tulare Chagoopa Plateau Comment
  CAS-BOT-BC271944  Eriogonum spergulinum var. spergulinum John Thomas Howell; Gordon H. True 1966-7-12 41776 Tulare Cherry Hill Road 3 miles south of Cannell Meadow intersection, Kern Plateau 2377 Comment
  CAS-BOT-BC65738  Argyrochosma jonesii John Thomas Howell; Gordon H. True 1968-5-13 44339 Tulare Cherry Hill Road at Rincon Trail, Brush Creek Canyon 1463 Comment
  CAS-BOT-BC222783  Perideridia parishii John Thomas Howell; Gordon H. True 1968-5-13 44335 Tulare Cherry Hill Road at Rincon Trail, Brush Creek Canyon, Kern Plateau 1463 Comment
  CAS-BOT-BC250261  Eriogonum fasciculatum var. polifolium John Thomas Howell; Gordon H. True 1969-9-29 46266 Tulare Cherry Hill Road at Rincon Trail, Brush Creek Canyon, Kern Plateau 1432 Comment
  CAS-BOT-BC272874  Ancistrocarphus filagineus John Thomas Howell; Gordon H. True 1968-5-14 44369 Tulare Cherry Hill Road at Rincon Trail, Brush Creek Canyon, Kern Plateau 1463 Comment
  CAS-BOT-BC312147  Hemizonella minima John Thomas Howell; Gordon H. True 1968-5-14 44407 Tulare Cherry Hill Road at Rincon Trail, Brush Creek Canyon, Kern Plateau, Sierra Nevada 1463 Comment
  CAS-BOT-BC384529  Silene antirrhina John Thomas Howell; Gordon H. True 1968-5-14 44377 Tulare Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau 1463 Comment
  CAS-BOT-BC438932  Cistanthe monandra John Thomas Howell; Gordon H. True 1968-5-13 44314 Tulare Cherry Hill Road, Brush Creek Canyon. Kern Plateau 1584 Comment
  RSA216194  Brachypodium distachyon J. T. Howell 1966-6-9 41563 Marin Chert outcrop, just north of the John Thomas Howell Botanical Garden, Tiburon Comment
  CAS-BOT-BC365115  Solidago velutina subsp. californica John Thomas Howell 1924-8-11 620 Plumas 2 miles east of Chester Comment
  CAS-BOT-BC314457  Grindelia hirsutula John Thomas Howell 1946-6-13 22038 Marin Chileno Valley Comment
  UC1177259  Lessingia hololeuca John Thomas Howell 1947-9-6 24178 Marin Chileno Valley Comment
  CAS-BOT-BC64779  Anisocoma acaulis John Thomas Howell; Gordon H. True 1967-7-5 43057 Tulare 6.4 miles north of Chimney Meadow, Kern Plateau 2225 Comment
  CAS-BOT-BC214059  Amsinckia John Thomas Howell 1931-4-14 6387 Santa Barbara China Harbor, Santa Cruz Island Comment
  UCD135498  Senecio glomeratus John Thomas Howell 1944-6-25 s.n. Marin near Chinese Camp. Comment
  UC890644  Downingia ornatissima var. eximia John Thomas Howell 1938-5-29 13844 Madera Chowchilla Comment
  RSA52005  Carex incurviformis var. danaensis J. T. Howell 1949-8-9 s.n. Tulare Cirque Peak 3659 Comment
  RSA338  Caulanthus amplexicaulis J. T. Howell 1927-7-10 388 San Bernardino City Creek Road below Big Bear. 1829 Comment
  CAS-BOT-BC426289  Chenopodium album John Thomas Howell 1957-6-16 32660 San Francisco City of San Francisco, Third & Davidson streets Comment
  CAS-BOT-BC249578  Castilleja applegatei subsp. pinetorum John Thomas Howell; Gordon H. True 1971-6-16 47958 Kern 3 miles east of Claraville on road to Kelso Valley 1950 Comment
  GH400377  Lepechinia cardiophylla J. T. Howell 1927-6-26 2606 Unknown Claymine Canyon n. Santa Ana Mts. Comment
  RSA1498  Adiantum jordanii J. T. Howell 1929-2-6 1220 Orange Claymine Canyon, Santa Ana Mountains 213 Comment
  CAS-BOT-BC116458  Delphinium patens subsp. patens J. T. Howell 1931-3-10 5758 Contra Costa 7 miles east of Clayton, Mt. Diablo region Comment
  CAS-BOT-BC116461  Delphinium patens subsp. patens J. T. Howell 1931-3-10 5758 Contra Costa 7 miles east of Clayton, Mt. Diablo region Comment
  CAS-BOT-BC268517  Eriogonum wrightii var. subscaposum John Thomas Howell 1942-7-27 17313 Tulare Cliff Creek between Deer Creek and Pinto Lake Comment
  CAS-BOT-BC107337  Salix lasiolepis var. bigelovii John Thomas Howell 1964-6-28 40714 Monterey Coast highway at Villa Creek Comment
  CAS-BOT-BC236436  Solanum umbelliferum John Thomas Howell 1939-10-13 4493 San Luis Obispo Coastal hills, 2 1/2 miles n. of Cambria Comment
  RSA21997  Castilleja wightii J. T. Howell 1938-5-1 13767 San Mateo Colma Canyon. Comment
  CAS-BOT-BC375206  Stephanomeria elata John Thomas Howell 1930-10-12 5575 El Dorado 1 mile south of Coloma Comment
  CAS-BOT-BC45269  Asplenium septentrionale John Thomas Howell 1942-8-7 17803 Tulare Columbine Lake 3352 Comment
Read comments
Oct 12 2018
  POM304473  Carex phaeocephala J. T. Howell 1942-8-7 17815 A Tulare Columbine Lake. Comment
  RSA44389  Ehrharta erecta J. T. Howell 1947-6-24 23289 Alameda Commonly naturalized in northwest part of University of California campus, Berkeley. Comment
Read comments
Nov 10 2012
  CAS-BOT-BC112787  Eleocharis macrostachya John Thomas Howell 1962-6-16 37629 Butte Concow School N of Yauko Hill. 533 Comment
  CAS-BOT-BC109581  Dudleya blochmaniae subsp. blochmaniae John Thomas Howell 1931-5-29 6568 Ventura Conejo Grade. Comment
  POM180778  Nicotiana bigelovii J. T. Howell 1930-9-19 5601 Napa Conn Creek near entrance of Sage Canyon, Napa Valley. Comment
  CAS-BOT-BC102890  Salix breweri John Thomas Howell 1961-3-31 36473 Napa near Conn Dam Comment
  CAS-BOT-BC348679  Microseris acuminata John Thomas Howell 1931-4-19 6467 Napa Conn Valley Comment
  CAS-BOT-BC348968  Microseris douglasii subsp. douglasii John Thomas Howell 1931-4-19 6449 Napa Conn Valley Comment
  CAS-BOT-BC46059  Agoseris heterophylla var. cryptopleura John Thomas Howell 1931-4-19 6451 Napa Conn Valley Comment
  CAS-BOT-BC194394  Danthonia intermedia John Thomas Howell; Gordon H. True 1968-7-16 4409 Mono Cooney Lake, Virginia Lakes basin ca. 3 1/4 miles southwest of Conway Summit - Sierra Nevada 2956 Comment
  GH422079  Streptanthus fenestratus J. T. Howell 1960-6-6 35335 Unknown Copper Creek Trail, Kings River Canyon 1676 Comment
  NY342566  Paronychia ahartii J. T. Howell 1955-6-12 30307 Tehama 8.5 miles south of Corning Comment
  UC1026394  Juncus uncialis John Thomas Howell 1954-4-26 29190 Tehama 6 mi s Corning Comment
  CAS-BOT-BC285043  Hordeum depressum John Thomas Howell 1953-4-26 28931 San Joaquin Corral Hollow Comment
  GH403902  Amsinckia eastwoodiae J. T. Howell 1933-3-26 10889 Unknown Corral Hollow Comment
  RSA97191  Fritillaria agrestis J. T. Howell 1953-4-26 s.n. Alameda west end of Corral Hollow Comment
  CAS-BOT-BC223769  Frankenia salina John Thomas Howell 1939-9-3 s.n. Marin Corte Madera Comment
  UC1177453  Ceanothus foliosus John Thomas Howell 1946-5-25 21942 Marin hills w of Corte Madera Comment
  CAS-BOT-BC420093  Polygonum polygaloides subsp. kelloggii John Thomas Howell 1949-7-18 25441 Inyo Cottonwood Creek 3108 Comment
  A376079  Simmondsia chinensis J. T. Howell 1927-8-7 2968 Unknown Cottonwood Creek Valley on road between Dulzura Ranch and Campo 457 Comment
  CAS-BOT-BC231048  Plagiobothrys hispidulus John Thomas Howell 1949-7-18 25467 Inyo Cottonwood Lakes 3383 Comment
  CAS-BOT-BC186182  Ribes roezlii var. roezlii John Thomas Howell 1931-2-23 5747 Mariposa 3 miles from Coulterville on road to Bower's Cave Comment
  CAS-BOT-BC270571  Calycadenia multiglandulosa John Thomas Howell 1931-10-12 8157 Mariposa 3 miles from Coulterville on road to Jacksonville Comment
  CAS-BOT-BC434266  Rumex triangulivalvis John Thomas Howell 1944-8-18 20703 A Mariposa Crane Flat Comment
  CAS-BOT-BC433002  Mitella breweri John Thomas Howell; Gordon H. True 1970-6-11 46582 Tulare Crescent Meadow, Sequoia Park Comment
  CAS-BOT-BC238849  Sambucus nigra subsp. caerulea John Thomas Howell 1924-8-10 612 Plumas Crescent Mills 1219 Comment
  CAS-BOT-BC181075  Glossopetalon spinescens John Thomas Howell 1928-6-15 3950 Inyo Crest of Panamint Mts. above Surprise Canyon Comment
  NY747198  Lupinus lepidus var. confertus J. T. Howell 1948-8-1 25276 Mono 3 miles south of Crestview Comment
  CAS-BOT-BC265108  Eriogonum umbellatum var. nevadense John Thomas Howell 1963-8-22 40270 Mono 2.5 miles south of Crestview, Sierra Nevada Comment
  RSA201444  Phacelia hastata var. compacta J. T. Howell 1938-8-10 14502 Mono Crestview. Comment
  CAS-BOT-BC171932  Epilobium canum subsp. latifolium John Thomas Howell 1923-7-30 180 Mariposa Crevice of rock at Indian Bridge, Wawona 1219 Comment
  UC421679  Lessingia tenuis John Thomas Howell 1928-5-27 3859 Kern near Cuddy's Ranch (Mt. Pinos Region); Mt. Pinos region Comment
  CAS-BOT-BC287231  Cotula australis John Thomas Howell 1967-4-27 42068 San Luis Obispo Cuesta Canyon County Park, San Luis Obispo Comment
  SEINET10461183  Nemacladus interior Howell 1959-9-26 Howell 35086 Butte Cuesta Power House; North fork of the Feather River 427 Comment
  CAS-BOT-BC119732  Carex nebrascensis John Thomas Howell 1947-6-26 23309 Sonoma Cunningham Marsh Comment
  CAS-BOT-BC192279  Danthonia californica John Thomas Howell 1947-6-5 23246 Sonoma Cunningham Marsh Comment
  CAS-BOT-BC30077  Achillea millefolium John Thomas Howell 1947-6-26 s.n. Sonoma Cunningham Marsh Comment
  CAS-BOT-BC126973  Agrostis exarata John Thomas Howell 1947-6-26 s.n. Sonoma Cunningham Marsh. Comment
  RSA94098  Epilobium hallianum J. T. Howell 1947-6-26 23290 Sonoma Cunningham Marsh. Comment
  RSA1046  Fremontodendron californicum J. T. Howell 1927-7-9 322 San Bernardino Cushenberry Grade. 1220 Comment
  CAS-BOT-BC158310  Prunus fasciculata var. fasciculata John Thomas Howell 1927-7-9 2698 San Bernardino [Cushenberry] Cushenbury Grade, desert side of San Bernardino Mts. 1219 Comment
  RSA26174  Polygonum patulum J. T. Howell 1932-10-8 10799 Napa Cuttings Wharf on Napa River. Comment
  SBBG50436  Eriogonum clavatum J. T. Howell 1973-11-2 50314 San Luis Obispo Cuyama Valley, 0.7 mi W of Kern County line 822 Comment
  CAS-BOT-BC293466  Erigeron algidus John Thomas Howell 1944-8-10 s.n. Mono Dana Plateau Comment
  CAS-BOT-BC472046  Allium obtusum var. obtusum John Thomas Howell 1944-8-10 20299 Mono Dana Plateau Comment
  CAS-BOT-BC21485  Cicuta douglasii John Thomas Howell 1934-6-12 12001 Modoc Davis Creek. Comment
  CAS-BOT-BC257617  Eriogonum inflatum John Thomas Howell 1927-6-12 2520 San Bernardino Deadman's Point, Mojave Desert 914 Comment
  CAS-BOT-BC375726  Stephanomeria runcinata John Thomas Howell 1927-6-12 2519 San Bernardino Deadman's Point, Mojave Desert 914 Comment
  UC692353  Parvisedum pentandrum J. T. Howell 16970 Contra Costa ne of Deer Flat (Mount Diablo); Mount Diablo 609 Comment
  CAS-BOT-BC43953  Arctostaphylos tomentosa subsp. tomentosa John Thomas Howell 1966-4-14 41481 Monterey Deer Flat Park, Monterey Comment
  UC1176773  Aristolochia californica John Thomas Howell 1945-5-13 20864 Marin Deer Park near Fairfax Comment
  RSA120468  Hordeum depressum J. T. Howell 1957-5-19 32351 Stanislaus Del Puerto Canyon Comment
  CAS-BOT-BC285079  Hordeum marinum subsp. gussoneanum John Thomas Howell 1957-5-19 32350 Stanislaus Del Puerto Canyon Comment
  CAS-BOT-BC528534  Triteleia peduncularis John Thomas Howell 1957-5-19 32362 Stanislaus Del Puerto Canyon Comment
  RSA120473  Eriogonum angulosum J. T. Howell 1957-5-19 32318 Stanislaus Del Puerto Canyon, 7.5 miles from Patterson Comment
  CAS-BOT-BC244703  Chorizanthe spinosa John Thomas Howell 1957-6-24 32735 Kern Desert slope, 2.5 miles ssw. of Red Rock Canyon 640 Comment
  CAS-BOT-BC121848  Dirca occidentalis John Thomas Howell 1948-5-31 24329 Marin Devils Gulch near Camp Taylor Comment
  CAS-BOT-BC70102  Cheilanthes gracillima John Thomas Howell 1968-7-19 44569 Madera Devils Postpile 2316 Comment
  JEPS58954  Castilleja John Thomas Howell 1947-6-18 23282 Marin n of Dillons Beach Comment
  UC1177015  Bromus carinatus var. carinatus John Thomas Howell 1946-5-4 21748 Marin Dillons Beach Comment
  UC904978  Carex obnupta John Thomas Howell 1946-7-4 22179 Marin Dillons Beach Comment
  CAS-BOT-BC303407  Gamochaeta ustulata John Thomas Howell 1946-5-4 21752 Marin Dillons Beach Comment
  CAS-BOT-BC203783  Elymus glaucus subsp. glaucus John Thomas Howell 1944-8-11 20309 A Tuolumne Dog Creek, Tuolumne Meadows Comment
  SEINET10709986  Carex illota John Thomas Howell 1944-8-6 Howell 20042 Tuolumne Dog Lake. Comment
  UC710458  Allophyllum gilioides subsp. violaceum John Thomas Howell 1943-7-16 18412 Nevada w. side Donner Pass (Boreal Ridge, near Norden); Boreal Ridge 2133 Comment
  CAS-BOT-BC16147  Boechera covillei John Thomas Howell 1943-7-21 18651 Placer Donner Pass to Mount Lincoln. Comment
  POM303634  Juncus drummondii J. T. Howell 1943-7-21 18640 Placer Donner Pass to Mt. Lincoln. Comment
  CAS-BOT-BC185526  Bromus vulgaris John Thomas Howell 1955-6-13 30344 Trinity 6 miles southwest of Douglas City. 609 Comment
  CAS-BOT-BC34039  Carex brevicaulis John Thomas Howell 1946-4-21 21683 Marin Down near radio station. Pt. Reyes Peninsula. Comment
  CAS-BOT-BC188  Agrostis aristiglumis John Thomas Howell 1947-5-14 23149 Marin Drakes Estero WNW of Mt. Vision Comment
  UC1177458  Lupinus nanus John Thomas Howell 1947-4-23 23072 Marin Drakes Estero w Mt. Vision; Drakes Estero w of Mt. Vision Comment
  CAS-BOT-BC136777  Amelanchier utahensis John Thomas Howell 1960-7-19 35685 Plumas Drakesbad 1828 Comment
  CAS-BOT-BC244348  Poa annua John Thomas Howell 1959-9-22 34864 Plumas Drakesbad 1737 Comment
  RSA201348  Muhlenbergia filiformis J. T. Howell 1960-9-22 34846 Plumas Drakesbad. 1738 Comment
  SEINET8338124  Bromus carinatus John Thomas Howell 1960-7-23 35932 Plumas Drakesbad. Comment
  CAS-BOT-BC175765  Caltha leptosepala John Thomas Howell 1960-7-23 35967 Plumas Drakesbad. Lassen Volcanic National Park 1828 Comment
  UCD140974  Carex vesicaria John Thomas Howell 1960-7-19 35626 Plumas Drakesbad. Lassen Volcanic National Park. 1676 Comment
  UCD106231  Lathyrus hirsutus John Thomas Howell 1966-6-2 41552 Napa Dry Creek Road near head of Dry Creek south west of Oakville. Comment
  CAS-BOT-BC163150  Clarkia imbricata John Thomas Howell 1945-7-18 21315 Sonoma Dry slope bordering Pitkin Marsh Comment
  POM180773  Helianthus bolanderi J. T. Howell 1930-10-19 5616 Napa Dry slope, 3 miles from Aetna Springs on Butte Valley road to Middletown Comment
  LA13109  Festuca idahoensis John Thomas Howell; 1934-7-1 12335 Modoc Duncan Horse Camp Comment
  SEINET12086619  Ranunculus occidentalis J. T. Howell 1934-1 12305 Modoc Duncan Horse Camp Comment
  CAS-BOT-BC190835  Gayophytum heterozygum John Thomas Howell 1934-7-1 12313 Modoc Duncan Horse Camp. 1355 Comment
  CAS-BOT-BC218144  Polygonum douglasii John Thomas Howell 1934-7-1 12317 Modoc Duncan Horse Camp. 1355 Comment
  CAS-BOT-BC247650  Koeleria macrantha John Thomas Howell 1934-6-30 12274 Modoc Duncan Horse Camp. 1355 Comment
  POM203067  Crepis acuminata J. T. Howell 1934-6-30 12289 Modoc Duncan Horse Camp. Comment
  POM203846  Achillea millefolium John T. Howell 1934-6-30 12254 Modoc Duncan Horse Camp. Comment
  RSA504193  Salix lemmonii J. T. Howell, Gordon H. True 1970-6-25 46780 Tulare E branch of Salmon Creek. Big Meadow to Sirretta Meadows. Kern Plateau. 2591 Comment
  CAS-BOT-BC232670  Navarretia pubescens John Thomas Howell 1933-6-4 11390 Napa E of Napa Comment
  UC1761607  Viola pedunculata John Thomas Howell 1931-3-21 5930 San Luis Obispo 28 mi E of Santa Maria (Cuyama Valley) Comment
  CAS-BOT-BC298410  Eriophyllum ambiguum var. paleaceum John Thomas Howell; Gordon H. True 1967-5-29 42286 Inyo 1/3 mile E of head of Nine Mile Canyon 1828 Comment
  CAS-BOT-BC58115  Rhododendron columbianum John Thomas Howell; Gordon H. True 1970-6-25 46782 Tulare E. branch of Salmon Creek, Big Meadow to Sirretta Meadows. Kern Plateau. 2590 Comment
  CAS-BOT-BC28449  Carex lenticularis var. lipocarpa John Thomas Howell 1951-7-16 27815 Tulare Eagle Lake 3048 Comment
  GH379260  Draba cruciata J. T. Howell 1942-7-25 17156 Unknown Eagle Lake Trail near Mineral King Comment
  CAS-BOT-BC117831  Carex specifica John Thomas Howell 1942-7-25 17177 Tulare Eagle Lake Trail near Mineral King. Comment
  CAS-BOT-BC429015  Micranthes nidifica John Thomas Howell 1925-6-19 1174 El Dorado Eagle Lake Trail, Lake Tahoe region. 2133 Comment
  RSA88482  Cardamine pachystigma J. T. Howell 1951-7-16 27799 Tulare Eagle Lake Trail, Mineral King and vicinity. 2744 Comment
  CAS-BOT-BC267874  Eriogonum umbellatum var. bahiiforme John Thomas Howell 1942-5-24 16967 Contra Costa Eagle Peak, Mount Diablo Comment
  CAS-BOT-BC102571  Populus fremontii John Thomas Howell 1971-1-15 47568 Monterey East Garrison Road, Camp Roberts (n. of San Miguel) Comment
  CAS-BOT-BC213510  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1940-7-30 15711 Tulare East Lake Comment
  POM260795  Swertia perennis J. T. Howell 1940-7-30 15735 Tulare East Lake 2927 Comment
  RSA26248  Danthonia intermedia J. T. Howell 1940-7-31 15776 Tulare East Lake 2927 Comment
  RSA26249  Deschampsia cespitosa subsp. cespitosa J. T. Howell 1940-7-31 15777 Tulare East Lake. 2927 Comment
  CAS-BOT-BC9069  Aegilops triuncialis John Thomas Howell 1953-7-5 29107 Marin East Peak, Mt. Tamalpais Comment
  CAS-BOT-BC453879  Potamogeton nodosus John Thomas Howell 1950-7-27 27400 Mono East Walker River at Bridgeport 1972 Comment
  SEINET10323310  Phoradendron bolleanum J. T. Howell 1970-9-26 474834 Kern East arm of Walker Basin near Cholly Canyon. 1128 Comment
  CAS-BOT-BC111129  Scirpus microcarpus John Thomas Howell; Gordon H. True 1970-6-25 46778 Tulare East branch of Salmon Creek, Big Meadow to Sirretta Meadows. 2590 Comment
  CAS-BOT-BC184491  Vulpia microstachys var. pauciflora John Thomas Howell 1957-5-5 32167 San Francisco East end of 22nd St. Comment
  CAS-BOT-BC213094  Ulex europaeus John Thomas Howell 1956-11-4 31960 San Francisco East end of Army St. Comment
  CDA3120  Chenopodium multifidum J. T. Howell 1956-11-4 31950 San Francisco East end of Army Street, San Francisco. 0 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-BC118434  Carex praegracilis John Thomas Howell 1946-6-13 22043 Marin East of Aurora School at Sonoma Co. line. Comment
  RSA126458  Agrostis exarata J. T. Howell 1946-6-13 22048 Marin East of Aurora School at Sonoma County line. Comment
  CAS-BOT-BC215273  Cryptantha incana John Thomas Howell; Gordon H. True 1970-7-29 46140 Tulare East of Cannell Meadow Ranger Station, Kern Plateau 2255 Comment
  UCD112952  Chamaebatiaria millefolium John Thomas Howell 1960-8-22 36369 Shasta East of Chaos Jumbles. 1828 Comment
  CAS-BOT-BC305532  Helianthus bolanderi John Thomas Howell 1933-8-27 11643 Napa East of Chiles Valley on road to Winters, Napa Range Comment
  RSA51937  Carex amplifolia J. T. Howell 1946-6-30 22127 Marin East of Rodeo Lagoon. Comment
  CAS-BOT-BC138861  Agrostis microphylla John Thomas Howell 1955-6-14 30427 Shasta East of Whiskeytown. Comment
  CAS-BOT-BC421527  Rumex crassus John Thomas Howell 1944-9-24 20751 Marin East side Bolinas Lagoon 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-BC264856  Eriogonum nudum var. nudum John Thomas Howell; Gordon H. True 1970-7-28 47039 Tulare East side of Big Meadow on loop road south of North Manter Pass Trail, Kern Plateau, Sierra Nevada 2377 Comment
  CAS-BOT-BC222203  Monardella odoratissima subsp. pallida John Thomas Howell; Gordon H. True 1970-7-28 47026 Tulare East side of Big Meadow on loop road south of North Manter Pass Trail. Kern Plateau 2377 Comment
  CAS-BOT-BC316766  Packera cana John Thomas Howell 1951-7-20 28047 Tulare East side of Farewell Gap. 3444 Comment
  RSA0059442  Orobanche fasciculata John Thomas Howell 1927-5-8 2377 Marin East slope of Mt. Tamalpais. Comment
  CAS-BOT-BC267845  Eriogonum umbellatum var. chlorothamnus John Thomas Howell 1949-8-13 26295 Inyo East slope of Wonoga Peak 2743 Comment
  SD130445  Sidalcea glaucescens John Thomas Howell 1977-8-3 52517 Alpine Ebbetts Pass. 2682 Comment
  CAS-BOT-BC117706  Carex simulata John Thomas Howell 1946-9-1 22980 El Dorado Echo Summit Comment
  CAS-BOT-BC421920  Rumex acetosella John Thomas Howell 1964-8-9 40892 El Dorado Echo Summit 2255 Comment
  RSA52091  Carex simulata J. T. Howell 1946-9-1 22980 El Dorado Echo Summit. 2256 Comment
  RSA137312  Atriplex fruticulosa J. T. Howell 1957-6-23 32705 Kern Edison. Comment
  CAS-BOT-BC357601  Pseudognaphalium stramineum John Thomas Howell 1936-8-29 12886 Humboldt Eel River 16 miles n. of Garberville Comment
  CAS-BOT-BC229479  Lewisia kelloggii John Thomas Howell 1940-5-31 15551 Mariposa El Capitan Trail Comment
  CAS-BOT-BC281542  Melica imperfecta John Thomas Howell 1972-4-24 48694 Mariposa El Portal 640 Comment
  SD147535  Phacelia vallicola John Thomas Howell 1964-4-27 40513 Mariposa El Portal 640 Comment
  SEINET7578150 Image available Carex tompkinsii John Thomas Howell 1972-4-24 48696 Mariposa El Portal, Sierra Nevada. 640 Comment
  CAS-BOT-BC111157  Trichophorum clementis John Thomas Howell 1944-8-8 20108 Tuolumne Elizabeth Lake Comment
  GH424183  Scirpus clementis J. T. Howell 1944-8-8 20108 Unknown Elizabeth Lake Comment
  CAS-BOT-BC49821  Ceanothus diversifolius John Thomas Howell 1976-4-28 51609 Lake south side of Elk Mt. 1066 Comment
  CAS-BOT-BC343057  Madia gracilis John Thomas Howell 1974-7-10 50552 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC504437  Fritillaria atropurpurea John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49174 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC251087  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49460 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC286308  Cirsium scariosum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49427 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC57139  Equisetum hyemale subsp. affine John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49432 Lassen Elysian Valley, west of Janesville 1325 Comment
  SD130459  Hypericum formosum var. scouleri John Thomas Howell, Gordon H. True and Margaret Williams 1973-6-28 49436 Lassen Elysian Valley, west of Janesville. 1326 Comment
  CAS-BOT-BC107967  Salix geyeriana John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight 1968-6-11 2396 Plumas End of Butterfly Valley toward canyon - Sierra Nevada Comment
  CAS-BOT-BC434602  Mirabilis laevis var. crassifolia John Thomas Howell 1962-7-7 38142 Kern Entrance to Kern River Canyon 243 Comment
  UCD99205  Spergularia media var. media John Thomas Howell 1944-4-23 19397 Marin Escalle. Comment
  CAS-BOT-BC146894  Rosa rubiginosa John Thomas Howell 1946-6-13 22057 Marin Estero School n. of Dillons Beach Comment
  CAS-BOT-BC340518  Lactuca serriola John Thomas Howell 1924-10-11 676 Alameda Euclid Avenue, Berkeley Comment
  CAS-BOT-BC63363  Ceanothus prostratus John Thomas Howell 1951-6-28 27728 Plumas Eureka Lake. 1889 Comment
  RSA30070  Pellaea bridgesii J. T. Howell 1951-6-28 27694 Plumas Eureka Peak 1982 Comment
  RSA88399  Castilleja applegatei subsp. pinetorum J. T. Howell 1951-6-28 27715 Plumas Eureka Peak. 2195 Comment
  CAS-BOT-BC375827  Stephanomeria virgata John Thomas Howell 1939-10-15 15378 Marin Fairfax Comment
  CAS-BOT-BC55366  Hirschfeldia incana John Thomas Howell 1942-6-21 17002 Marin Fairfax. Comment
  CAS-BOT-BC278415  Festuca idahoensis John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells 1981-5-14 53981 Sonoma Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain 457 Comment
  CAS-BOT-BC342499  Logfia gallica John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells 1981-5-14 54005 Sonoma Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain 457 Comment
  CAS-BOT-BC291781  Deinandra lobbii John Thomas Howell 1934-7-5 12426 Shasta 4 miles nw. of Fall River Mills Comment
  CAS-BOT-BC291783  Deinandra lobbii John Thomas Howell 1934-7-5 12426 Shasta 4 miles nw. of Fall River Mills Comment
  POM204049  Astragalus gibbsii J. T. Howell 1934-6-16 12226 Shasta Fall River Valley, 2 miles NE of McArthur. Comment
  CAS-BOT-BC177836  Astragalus curvicarpus var. curvicarpus John Thomas Howell 1934-6-16 12226 Shasta Fall River Valley, 2 miles ne. of McArthur Comment
  CAS-BOT-BC49394  Microseris nutans John Thomas Howell 1934-6-13 12051 Modoc Fandango Pass, Warner Mountains 1828 Comment
  POM203847  Microseris nutans J. T. Howell 1934-6-13 12051 Modoc Fandango Pass, Warner Mountains. 1829 Comment
  POM264911  Phacelia humilis var. humilis J. T. Howell 1934-6-13 12062 Modoc Fandango Pass, Warner Mountains. 1829 Comment
  POM304543  Crepis nana subsp. ramosa J. T. Howell 1942-8-8 17854 Tulare Farewell Gap Comment
  CAS-BOT-BC422180  Rumex californicus John Thomas Howell 1942-8-8 17827 Tulare Farewell Gap Trail near Mineral King Comment
  SEINET6031840  Equisetum telmateia J. T. Howell, G. H. True., Jr. 1969-4-8 45485 Plumas Feather River Canyon at Storrie 549 Comment
  RSA88120  Antirrhinum vexillocalyculatum subsp. intermedium J. T. Howell 1951-6-26 27544 Plumas Feather River Canyon. 854 Comment
  CAS-BOT-BC105143  Quercus kelloggii John Thomas Howell 1959-9-20 34700 Butte Feather River Highway 9 mi NE of Oroville Comment
  CAS-BOT-BC98182  Baccharis salicifolia John Thomas Howell 1974-9-19 50883 Butte Feather River Highway bridge at West Branch Feather River - Sierra Nevada 304 Comment
  CAS-BOT-BC44601  Arctostaphylos silvicola John Thomas Howell 1944-6-11 19617 Santa Cruz 1 mile east of Felton Comment
  CAS-BOT-BC224497  Cuscuta californica John Thomas Howell 1942-7-5 17010 Marin Fern Canyon, Mt. Tamalpais Comment
  CAS-BOT-BC136483  Cypripedium montanum John Thomas Howell 1944-8-18 20712 Tuolumne Field redacted by CAS, contact the data manager for more information Comment
  CAS-BOT-BC136496  Cypripedium montanum John Thomas Howell 1924-6-8 389 Mariposa Field redacted by CAS, contact the data manager for more information 1341 Comment
  CAS-BOT-BC56216  Opuntia ficus-indica John Thomas Howell 1927-6-22 2574 Orange Field redacted by CAS, contact the data manager for more information Comment
  CAS-BOT-BC240329  Spiranthes romanzoffiana John Thomas Howell 1936-8-24 12734 Trinity Field redacted by CAS, contact the data manager for more information Comment
  RSA44470  Packera cana J. T. Howell 1947-8-3 23701 Inyo Fifth Lake, Big PIne Lakes. 3354 Comment
  CAS-BOT-BC158490  Potentilla gracilis var. gracilis John Thomas Howell 1947-8-4 23719 Inyo Fifth Lake, Big Pine Lakes 3352 Comment
  CAS-BOT-BC264399  Penstemon heterodoxus var. heterodoxus John Thomas Howell 1947-8-5 23791 Inyo Fifth Lake, Big Pine Lakes 3352 Comment
  RSA44333  Carex phaeocephala J. T. Howell 1947-8-5 23770 Inyo Fifth Lake, Big Pine Lakes. 3354 Comment
  RSA44467  Tonestus peirsonii J. T. Howell 1947-8-5 23737 Inyo Fifth Lake, Big Pine Lakes. 3354 Comment
Read comments
Oct 20 2012
  GH350329  Arctostaphylos glandulosa J. T. Howell 1930-4-6 4675 Unknown First divide on road to Livermore after leaving San Antonio Valley Comment
  CAS-BOT-BC231377  Lycium andersonii John Thomas Howell 1928-4-2 3657 Inyo Five miles east of Bradbury Well, Black Mts. Comment
  CAS-BOT-BC42208  Arctostaphylos parryana John Thomas Howell 1967-4-29 42087 Ventura Flood plain of Cuyama River near Ozena Station 1066 Comment
  CAS-BOT-BC90756  Artemisia ludoviciana subsp. incompta John Thomas Howell; Gordon H. True 1967-9-19 43830 Tulare Flood-plain of Kern River South Fork, Kennedy Meadows Campground, Kern Plateau 1859 Comment
  CAS-BOT-BC233954  Calandrinia breweri John Thomas Howell 1928-3-20 3466 Los Angeles Floor of Vermont Canyon, Griffith Park Comment
  CAS-BOT-BC269716  Eriogonum nudum var. oblongifolium John Thomas Howell 1931-8-26 8019 Nevada Floristan Comment
  SBBG103600  Gilia capitata subsp. abrotanifolia J. T. Howell, G. H. True 1971-6-15 4777 Kern Flying Dutchman Crk Cyn on Havilah-Mt Breckenridge Rd 1249 Comment
  CAS-BOT-BC146152  Avena fatua John Thomas Howell 1954-5-16 s.n. Sacramento 5 miles southwest of Folsom. Comment
  RSA244715  Juniperus californica J. T. Howell 1970-9-24 47381 Kern Foothill woodland 0.5 mi. south of summit of Bodfish-Havilah Rd. 1097 Comment
  CAS-BOT-BC504472  Fritillaria recurva John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-4-29 53391 Siskiyou Forest Mountain Summit, 6 miles southwest of Yreka on raod to Fort Jones 1249 Comment
  CAS-BOT-BC204270  Elymus trachycaulus subsp. subsecundus John Thomas Howell; Gordon H. True 1970-7-27 46919 Tulare Forest border of Big Meadow, on the east side at Joughin Camp, Kern Plateau 2377 Comment
  RSA299160  Deschampsia elongata J. T. Howell, Gordon H. True 1970-7-27 46916 Tulare Forest border of Big Meadow, on the east side at Joughin Camp; Kern Plateau 2378 Comment
  CAS-BOT-BC244221  Poa unilateralis John Thomas Howell 1929-5-26 4242 Mendocino Fort Bragg 15 Comment
  RSA201445  Phacelia californica J. T. Howell 1929-5-26 4232 Mendocino Fort Bragg Comment
  CAS-BOT-BC439141  Claytonia exigua subsp. exigua John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-4-29 53412 Siskiyou Fort Jones 853 Comment
  CAS-BOT-BC105850  Cirsium andrewsii John Thomas Howell 1958-6-3 33627 San Francisco Fort Point, San Francisco Comment
  CAS-BOT-BC118819  Carex preslii John Thomas Howell 1947-8-15 24129 Inyo Fourth Lake, Big Pine Lakes. 3291 Comment
  CAS-BOT-BC81942  Ephedra viridis John Thomas Howell 1928-5-25 3824 Kern Frazier Mt. Park, Mt. Pinos region Comment
  A384327  Salix orestera J. T. Howell 1943-7-24 18774 Unknown Frog Lake Comment
  CAS-BOT-BC251901  Castilleja lemmonii John Thomas Howell 1943-7-24 18787 Nevada Frog Lake Comment
  CAS-BOT-BC207104  Euphorbia ocellata John Thomas Howell; Gordon H. True 1967-7-6 43218 Tulare From northern 1/3 of area, Vernal pool natural area in Valley Grassland, about 4.5 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC365806  Soliva sessilis John Thomas Howell 1954-5-17 29690 El Dorado 1.5 miles south of Garden Valley Comment
  CAS-BOT-BC519133  Triteleia hyacinthina John Thomas Howell 1954-5-17 29703 El Dorado 1 mile southwest of Garden Valley, Sierra Nevada 609 Comment
  CAS-BOT-BC69923  Isoetes nuttallii John Thomas Howell 1954-5-17 29695 El Dorado 1.5 mi. s. of Garden Valley. Comment
  CAS-BOT-BC127513  Agrostis capillaris John Thomas Howell 1954-6-25 30006 Alameda Garden of Mr. and Mrs. Wesley Shellbey, 58 York Drive, Piedmont. Comment
  UC517561  Astragalus lentiginosus var. coachellae John Thomas Howell 1928-3-11 3439 Riverside Garnet Station , Garnet Station (Coachella Valley) Comment
  CAS-BOT-BC31385  Carex leporinella John Thomas Howell 1944-8-12 20374 Tuolumne Gaylor Lakes. 3291 Comment
  CAS-BOT-BC286468  Cirsium scariosum John Thomas Howell 1952-6-14 28334 Siskiyou Gazelle Comment
  CAS-BOT-BC361682  Pseudognaphalium thermale John Thomas Howell 1964-9-13 41379 Tulare Generals Highway at Stony Creek 1950 Comment
  CAS-BOT-BC97307  Artemisia tridentata subsp. tridentata John Thomas Howell 1929-10-5 4446 El Dorado slopes about 2 miles above Glen Alpine Lodge, Lake Tahoe region Comment
  CAS-BOT-BC309956  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1932-9-18 10784 Sonoma Glen Ellen Comment
  CAS-BOT-BC164454  Clarkia dudleyana John Thomas Howell; Gordon H. True 1971-6-14 47681 Kern 3 miles east of Glennville on Greenhorn Mt. road 1219 Comment
  CAS-BOT-BC271812  Melica californica John Thomas Howell; R. C. Barneby 1954-5-10 29338 Fresno Grade above Tollhouse, Sierra Nevada 792 Comment
  UCD91987  Poa sierrae John Thomas Howell 1967-6-22 42650 Plumas near mouth of Granite Creek. Canyon of the Feather River North Fork. 609 Comment
  CAS-BOT-BC128259  Salix lasiolepis var. lasiolepis John Thomas Howell; Gordon H. True 1968-5-12 44211 Tulare Grassy flat and willwo grove, Brush Creek Canyon - Kern Plateau, Sierra Nevada 1402 Comment
  UC750717  Madia anomala John Thomas Howell 1946-5-25 21932 Marin Greenbrae Hills Comment
  JEPS58941  Cordylanthus maritimus subsp. palustris John Thomas Howell 1946-5-25 21939 Marin Greenbrae Marshes Comment
  UC1042312  Eriogonum gracillimum John Thomas Howell 1954-11-3 30141 Monterey 5 mi on road to Greenfield Arroyo Seco Camp; Santa Lucia Mts. Comment
  CAS-BOT-BC232617  Polypogon monspeliensis John Thomas Howell 1962-7-11 38623 Kern Greenhorn Mountains. S side of Black Mountain 1417 Comment
  SEINET7303720 Image available Elymus glaucus John Thomas Howell 1962-1 s.n. Kern Greenhorn Mountains; Black Mt. south side 1417 Comment
  UC702987  Phacelia congdonii John Thomas Howell 1930-5-14 5101 Kern w slope Greenhorn Range 1371 Comment
  CAS-BOT-BC125324  Salix lasiandra var. lasiandra John Thomas Howell 1961-6-21 36606 Plumas Greenville 1097 Comment
  CAS-BOT-BC204407  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1961-6-21 36695 Plumas Greenville 1097 Comment
  CAS-BOT-BC285106  Hordeum marinum subsp. gussoneanum John Thomas Howell 1961-6-21 36686 Plumas Greenville 1097 Comment
  CAS-BOT-BC237008  Symphoricarpos mollis John Thomas Howell 1961-6-21 36626 Plumas Greenville, Sierra Nevada 1097 Comment
  CAS-BOT-BC313433  Hemizonella minima John Thomas Howell 1961-6-21 36616 Plumas Greenville, Sierra Nevada 1097 Comment
  RSA88585  Chenopodium pumilio J. T. Howell 1951-8-19 28183 Plumas Greenville. 1098 Comment
  CAS-BOT-BC86384  Quercus dumosa John Thomas Howell 1927-9-30 3124 Los Angeles near the zoo, Griffith Park Comment
  CAS-BOT-BC104676  Quercus wislizeni John Thomas Howell 1930-6-15 5310 Alameda slope of summit of Grizzley Peak, Berkeley Hills Comment
  CAS-BOT-BC112212  Eleocharis rostellata John Thomas Howell 1964-8-9 40901 Alpine Grover Hot Springs 1798 Comment
  CAS-BOT-BC143093  Potentilla anserina subsp. pacifica John Thomas Howell 1966-4-18 41508 Marin Gully just north of John Thomas Howell Botanical Garden, Tiburon Comment
  CAS-BOT-BC240140  Setaria pumila John Thomas Howell 1973-7-25 49982 Merced 3 miles south of Gustine on Hunt Road to Ingomar 30 Comment
  CAS-BOT-BC139099  Agrostis pallens John Thomas Howell 1934-7-3 12377 Modoc 5 miles south of Hackamore. Comment
  CAS-BOT-BC203510  Elymus glaucus subsp. glaucus John Thomas Howell 1945-5-9 20819 Marin Hamilton Field Comment
  UC1106250  Trifolium variegatum var. melananthum John Thomas Howell 1945-5-9 20332 Marin between Hamilton Field and Ignacio Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  CAS-BOT-BC85004  Artemisia arbuscula subsp. arbuscula John Thomas Howell 1934-7-6 12455 Lassen Harvey Valley Comment
  CAS-BOT-BC43089  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  CAS-BOT-BC230722  Cryptantha rattanii John Thomas Howell 1955-5-21 30237 Monterey Hastings Reservation, Santa Lucia Mts. Comment
  CAS-BOT-BC49102  Ceanothus cuneatus var. ramulosus John Thomas Howell 1954-3-18 29132 Monterey Hastings Reservation, Santa Lucia Mts. Comment
  RSA97656  Arctostaphylos glandulosa subsp. glandulosa J. T. Howell 1953-6-14 29077 Monterey Hastings Reservation, Santa Lucia Mts. Comment
  RSA97657  Arctostaphylos tomentosa subsp. crustacea J. T. Howell 1953-6-14 29078 Monterey Hastings Reservation, Santa Lucia Mts. Comment
  CAS-BOT-BC124867  Salix lemmonii John Thomas Howell 1960-8-22 36397 Shasta Hat Lake 1950 Comment
  CAS-BOT-BC102965  Populus trichocarpa John Thomas Howell 1960-8-22 36395 Shasta Hat Lake 1950 Comment
  CAS-BOT-BC185586  Bromus tectorum John Thomas Howell 1955-6-13 30352 Trinity Hayfork Mountain summit on road from Douglas City to Hayfork. 1097 Comment
  UCD62547  Deschampsia danthonioides John Thomas Howell 1955-6-13 30379 Trinity Hayfork. 716 Comment
  SEINET10860728  Danthonia unispicata John Thomas Howell 1955-6-13 Howell 30382 Trinity Hayfork. Comment
  CAS-BOT-BC118236  Carex scopulorum var. bracteosa John Thomas Howell 1945-9-29 21531 El Dorado Haypress Meadow 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
  CAS-BOT-BC223290  Sanicula bipinnatifida John Thomas Howell 1930-5-11 4843 San Diego Henshaw Dam Comment
  CAS-BOT-BC348557  Micropus californicus var. californicus John Thomas Howell 1930-5-11 4831 San Diego Henshaw Dam Comment
  CAS-BOT-BC378497  Ranunculus californicus var. californicus John Thomas Howell 1933-4-23 11169 San Benito near Hernandez Comment
  GH414642  Layia heterotricha J. T. Howell 1931-3-29 6022 Unknown 11 miles from Hernandez on road to San Benito Comment
  RSA70494  Erodium macrophyllum J. T. Howell 1931-3-29 6026 San Benito 11 miles from Hernandez, on road to San Benito. Comment
  CAS-BOT-BC309608  Hemizonia congesta subsp. lutescens John Thomas Howell 1946-7-4 22171 Marin Hicks Valley Comment
  UC1106076  Scirpus acutus var. occidentalis John Thomas Howell 1946-9-15 23007 Marin Hidden Lake Mt. Tamalpais, Hidden Lake Comment
  CAS-BOT-BC300763  Erigeron glacialis var. glacialis John Thomas Howell 1944-8-8 20166 Mariposa High gap south of Elizabeth Lake Comment
  CAS-BOT-BC362839  Raillardella scaposa John Thomas Howell 1944-8-8 20167 Mariposa High gap south of Elizabeth Lake Comment
  CAS-BOT-BC35020  Carex densa John Thomas Howell 1944-4-23 19402 Marin Hills SE of Kentfield. Comment
  CAS-BOT-BC163827  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1933-6-4 11387 Napa Hills east of Napa Comment
  POM204471  Navarretia pubescens Thos. Howell 1933-6-4 11390 Napa Hills east of Napa Comment
  CAS-BOT-BC37394  Cardamine californica John Thomas Howell 1933-5-14 11255 Contra Costa Hills east of Saint Mary's College. Comment
  POM204479  Nemophila heterophylla J. T. Howell 1933-5-14 11218 Contra Costa Hills east of St. Mary s college Comment
  CAS-BOT-BC383367  Wyethia helenioides John Thomas Howell 1933-5-14 11287 Contra Costa Hills east of St. Mary's College Comment
  CAS-BOT-BC235340  Sorghum halepense John Thomas Howell 1927-7-27 2859 Orange Hills on n. side of Santa Ana Canon [Canyon] 152 Comment
  SEINET10908994  Agrostis diegoensis John Thomas Howell 1943-6-10 Howell 18236 Unknown Hills south-west of St. Helena, Napa Co. Comment
  CAS-BOT-BC87155  Streptanthus glandulosus subsp. glandulosus John Thomas Howell 1941-6-22 16322 Napa Hills southwest of Saint Helena. Comment
  CAS-BOT-BC50919  Ceanothus foliosus var. foliosus John Thomas Howell; Alice Eastwood 1939-6-11 7430 Napa Hills west of Calistoga Comment
  CAS-BOT-BC199080  Rhus aromatica John Thomas Howell; R. C. Barneby 1954-5-12 29487 Mariposa Hites Cove - Sierra Nevada 609 Comment
  CAS-BOT-BC390868  Spergularia marina John Thomas Howell 1933-4-22 11006 San Benito 10 miles nw. of Hollister Comment
  CAS-BOT-BC403371  Eschscholzia californica John Thomas Howell 1933-4-22 11013 San Benito 7 miles nw. of Hollister Comment
  CAS-BOT-BC98291  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1929-9-21 4405 San Joaquin Holt Comment
  SEINET11770036  Wolffiella lingulata J. T. Howell 1932-1 10790 San Joaquin Holt Comment
  CAS-BOT-BC178805  Astragalus californicus Thos. Howell 1889-5-12 1351 Siskiyou Hornbrook Comment
  UC526137  Monolepis pusilla John Thomas Howell 1934-6-10 11895 Lassen Horse Lake Comment
  UC618417  Plagiobothrys infectivus John Thomas Howell 1938-4-10 13757 San Joaquin Hospital Canyon Comment
  RSA22133  Cryptantha microstachys J. T. Howell 1938-4-10 13765 San Joaquin Hospital Canyon. Comment
  CAS-BOT-BC94248  Quercus garryana Thomas Jefferson Howell 1880-4-1 s.n. Unknown Howell's Pacific Coast Comment
  RSA88508  Carex globosa J. T. Howell 1953-5-7 28953 Monterey Huckleberry Hill, Monterey Comment
  CAS-BOT-BC43904  Arctostaphylos tomentosa subsp. bracteosa John Thomas Howell 1954-5-7 28947 Monterey Huckleberry Hill, Monterey Peninsula Comment
  CAS-BOT-BC189583  Cryptantha circumscissa var. circumscissa John Thomas Howell 1948-6-15 24368 San Luis Obispo Hughes Canyon SE of Shandon 609 Comment
  SEINET244257  Sanicula bipinnatifida John Thomas Howell 1957-5-6 32216 San Francisco Hunter's Point Comment
  CAS-BOT-BC327997  Pentachaeta alsinoides John Thomas Howell 1957-5-6 32215 San Francisco Hunters Point Comment
  CAS-BOT-BC340625  Lactuca serriola John Thomas Howell 1956-7-1 31667 San Francisco Hunters Pt., San Francisco Comment
  POM197771  Lessingia glandulifera var. glandulifera John T. Howell 1927-8-2 2909 Riverside Idyllwild, near Strawberry Valley. San Jacinto Mts. Comment
  CAS-BOT-BC38635  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1964-4-29 40684 Tuolumne In belt of metamorphic rocks at Tuolumne River bridge, 2.5 miles east of Jacksonville. 198 Comment
  CAS-BOT-BC23563  Arctostaphylos crustacea John Thomas Howell 1967-3-15 42048 Monterey In eastern part of Ft. Ord Military Reservation sw of Salinas Comment
  CAS-BOT-BC42109  Arctostaphylos patula John Thomas Howell 1975-7-22 51357 Plumas In the Transition Life Zone, 2 miles northwest of Spring Garden 1173 Comment
  CAS-BOT-BC339931  Sphaeromeria cana John Thomas Howell 1947-8-14 24099 Inyo Inconsolable Range 3962 Comment
  CAS-BOT-BC200177  Trisetum spicatum John Thomas Howell 1947-8-14 24113 Inyo Inconsolable Range above Thunder & Lightning Lake 3657 Comment
  RSA44391  Carex capitata J. T. Howell 1947-8-14 24109 Inyo Inconsolable Range above Thunder and Lightning Lake. 3659 Comment
Read comments
Nov 7 2009
  CAS-BOT-BC185871  Vulpia octoflora var. hirtella John Thomas Howell 1958-5-26 33464 Inyo 4 mi. w. of Independence 1524 Comment
  SEINET11197292 Image available Hemizonia congesta subsp. clevelandii J. T. Howell 1961-9-23 36825 Plumas Indian Valley, East of Crescent Mills on Stampfli Lane 1082 Comment
  GH422319  Streptanthus tortuosus J. T. Howell 1966-7-26 41998 Unknown Injun Jim Campground at confluence of Granite Creek and North Fork of Feather River 609 Comment
  CAS-BOT-BC38618  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-7-21 51338 Plumas Injun Jim Campground, Feather River Canyon 609 Comment
  CAS-BOT-BC135701  Iris hartwegii John Thomas Howell 1954-6-7 29986 Tuolumne Intersection of Sonora Pass & Pinecrest roads Comment
  CAS-BOT-BC197150  Echinochloa crus-galli John Thomas Howell 1943-7-4 18276 Marin Inverness Comment
  CAS-BOT-BC304432  Grindelia hirsutula John Thomas Howell 1944-9-10 20739 Marin Inverness Comment
  JEPS37909  Plantago maritima var. juncoides John Thomas Howell 1940-5-20 15489 Marin Inverness Comment
  UC1177032  Agrostis hallii John Thomas Howell 1945-8-19 21418 Marin Inverness Comment
  CAS-BOT-BC13126  Agoseris hirsuta John Thomas Howell 1946-6-16 22071 Marin Inverness Park Comment
  CAS-BOT-BC220539  Monardella villosa John Thomas Howell 1944-7-9 19689 Marin Inverness Ridge Comment
  CAS-BOT-BC381919  Uropappus lindleyi John Thomas Howell 1944-7-9 19702 Marin Inverness Ridge Comment
  CAS-BOT-BC46804  Arctostaphylos virgata John Thomas Howell 1926-2-22 1640 Marin Inverness Ridge Comment
  RSA51267  Arctostaphylos glandulosa subsp. glandulosa J. T. Howell 1950-4-2 26307 Marin Inverness Ridge east of Mt. Vision, Pt. Reyes Peninsula. Comment
  CAS-BOT-BC58884  Gaultheria shallon John Thomas Howell 1949-5-15 25318 Marin Inverness Ridge west of Inverness Comment
  CAS-BOT-BC19454  Carex bolanderi John Thomas Howell 1944-6-4 19539 Marin Inverness Ridge west of Inverness. Comment
  UC1176768  Eschscholzia californica John Thomas Howell 1944-6-4 19554 Marin w Inverness; Inverness Ridge Comment
  CAS-BOT-BC284114  Eragrostis pectinacea var. pectinacea John Thomas Howell; Gordon H. True 1967-9-17 43741 Kern Inyokern Comment
  UCD101167  Eriogonum roseum John Thomas Howell 1954-9-5 30031 Amador Ione Hills, 2 miles NNE of Buena Vista. Comment
  CAS-BOT-BC211630  Frankenia salina John Thomas Howell 1929-9-21 4398 San Joaquin Island Road between Brentwood and Stockton Comment
  CAS-BOT-BC242969  Poa secunda subsp. secunda John Thomas Howell 1951-6-28 27663 Plumas Jamison Creek 1584 Comment
  CAS-BOT-BC70677  Cystopteris fragilis John Thomas Howell 1951-6-27 27635 Plumas Jamison Creek 1828 Comment
  RSA88509  Rhamnus alnifolia J. T. Howell 1951-6-27 27617 Plumas Jamison Creek 1829 Comment
  RSA88545  Rosa woodsii var. ultramontana J. T. Howell 1951-6-28 27664 Plumas Jamison Creek Canyon 1585 Comment
  CAS-BOT-BC312292  Heterotheca villosa var. minor John Thomas Howell 1951-6-27 27632 Plumas Jamison Creek, Sierra Nevada 1828 Comment
  CDA5326  Cyclospermum leptophyllum J. T. Howell 1974-8-27 50868 Alameda Jean Street at Santa Clara Avenue, Oakland. 0 Comment
  CAS-BOT-BC97670  Symphyotrichum chilense John Thomas Howell; Catherine Best; Wilma Follette; Gordon True 1981-5-21 54048 Solano Jepson Prairie Preserve of The Nature Conservancy, in the vicinity of Olcutt Lake about 12 miles south of Dixon 6 Comment
  CAS-BOT-BC141590  Cotoneaster pannosus John Thomas Howell 1965-10-13 41414 Marin John Thomas Howell Botanical Garden Tiburon Comment
  CAS-BOT-BC527395  Zigadenus fontanus John Thomas Howell 1966-7-20 41983 Marin John Thomas Howell Botanical Garden, Tiburon Comment
  CAS-BOT-BC72582  Pteridium aquilinum John Thomas Howell 1966-4-18 41511 Marin John Thomas Howell Botanical Garden, Tiburon Comment
  CAS-BOT-BC114935  Carex whitneyi John Thomas Howell 1951-6-27 27567 Plumas Johnsonville 1584 Comment
  RSA97923  Carex fracta J. T. Howell 1951-6-28 27650 Plumas Johnsville 1585 Comment
  CAS-BOT-BC282706  Glyceria elata John Thomas Howell 1951-6-28 27647 Plumas Johnsville, Sierra Nevada 1584 Comment
  CAS-BOT-BC184389  Vulpia microstachys var. pauciflora John Thomas Howell 1958-4-29 33022 Monterey Jolon Comment
  CAS-BOT-BC286549  Cirsium occidentale var. venustum John Thomas Howell 1931-5-23 6508 Monterey Jolon Grade, 11 miles west of King City, Santa Lucia Mts. Comment
  POM181145  Eschscholzia hypecoides J. T. Howell 1931-5-23 6505 Monterey Jolon Grade, Santa Lucia Mountains Comment
  GH350362  Arctostaphylos glandulosa var. cushingiana J. T. Howell 1955-5-18 30187 Unknown west of saddle between Juipero Serra & Pinyon peaks, Santa Lucia Mts. 1463 Comment
  CAS-BOT-BC509448  Lilium kelleyanum John Thomas Howell 1940-8-10 16103 Fresno Junction Meadow, Bubbs Creek Comment
  RSA550549  Arctostaphylos canescens J. T. Howell 1976-7-16 51916 Plumas Just east of Bucks Summit on road to Meadow Valley. 1646 Comment
  CAS-BOT-BC273248  Calendula arvensis John Thomas Howell 1946-3-31 21591 Sonoma Just east of Sonoma Comment
  RSA128028  Castilleja applegatei subsp. martinii J. T. Howell 1957-4-29 32094 Monterey Just east of summit of Mustang Grade. Topotype. 793 Comment
  CAS-BOT-BC301479  Eriophyllum lanatum var. integrifolium John Thomas Howell 1977-8-3 52514 A Alpine Just north of Ebbetts Pass 2682 Comment
  CAS-BOT-BC390590  Spergularia rubra John Thomas Howell 1977-8-3 52556 Alpine Just north of Ebbetts Pass 2682 Comment
  CAS-BOT-BC290924  Crepis vesicaria John Thomas Howell 1956-5-1 31316 San Mateo Just s. of Woodside on road to Searsville Comment
  CAS-BOT-BC301773  Eriophyllum multicaule John Thomas Howell; Gordon H. True 1967-7-4 42907 Tulare Just south of Kennedy Meadows on road to Chimney Meadow, Kern Plateau 1920 Comment
  CAS-BOT-BC34051  Carex brevicaulis John Thomas Howell 1952-3-4 28298 Monterey Just south of Little Sur. Comment
  CAS-BOT-BC117303  Carex spectabilis John Thomas Howell 1942-8-5 17736 A Tulare Kaweah Meadows, Chagoopa Plateau. Comment
  UCD131488  Ericameria nauseosa var. speciosa John Thomas Howell 1960-8-20 36283 Plumas Kelly Camp, near Drakesbad. 1615 Comment
  UC750641  Taeniatherum caput-medusae John Thomas Howell 1945-6-18 20997 Lake Kelseyville Comment
  UCD97294  Atriplex canescens John Thomas Howell; Gordon H. True 1971-6-16 47882 Kern along Kelso Creek 7 miles south of Weldon on road to Kelso Valley. 914 Comment
  UC1176763  Ribes divaricatum var. pubiflorum John Thomas Howell 1941-7-6 16357 Marin Kent Trail Mt. Tamalpais Comment
  CAS-BOT-BC156615  Rubus ulmifolius John Thomas Howell; R. C. Barneby 1980-5-10 29371 Fresno Kerckhoff Reservoir 320 Comment
  RSA66719  Galium bolanderi J. T. Howell 1930-5-13 5045 Kern Kern Canyon, 7 miles above Kernville 845 Comment
  CAS-BOT-BC88396  Thysanocarpus curvipes John Thomas Howell 1930-5-13 5049 Kern Kern Canyon, 7 miles above Kernville. 844 Comment
  UCR87999  Gilia leptantha subsp. purpusii J. T. Howell, G. H. True 1970-7-29 47055 Tulare Kern Plateau, North end of Big Meadow west of Salmon Creek 2378 Comment
  UCR95799  Leptodactylon pungens subsp. hallii J. T. Howell, G. H. True 1967-7-3 42826 Tulare Kern Plateau, North of Long Valley on road to Rockhouse Meadow 1951 Comment
  CAS-BOT-BC398268  Stellaria umbellata John Thomas Howell; Gordon H. True 1969-9-30 46382 Tulare Kern Plateau, Poison Meadow 2316 Comment
  CAS-BOT-BC327311  Layia glandulosa John Thomas Howell; Gordon H. True 1967-7-3 42761 Tulare Kern Plateau. Between Chimney and Lamont meadows 1981 Comment
  CAS-BOT-BC327310  Layia glandulosa John Thomas Howell; Gordon H. True 1967-5-29 42348 Tulare Kern Plateau. Midway between Chimney and Lamont meadows 1889 Comment
  CAS-BOT-BC22015  Carex heteroneura John Thomas Howell; Gordon H. True 1970-6-24 46751 Tulare Kern Plateau. South Manter Creek, Big Meadow to Manter Meadow. 2316 Comment
  CAS-BOT-BC237624  Polypogon viridis John Thomas Howell; Gordon H. True 1967-7-3 42795 Tulare Kern Plateau. W of Lamont Meadow 1706 Comment
  CAS-BOT-BC286740  Ericameria cuneata var. cuneata John Thomas Howell 1962-9-21 38676 Kern Kern River Canyon 304 Comment
  CAS-BOT-BC375347  Stephanomeria exigua subsp. coronaria John Thomas Howell 1967-11-5 44141 Kern Kern River Canyon 2 miles above Kernville 822 Comment
  CAS-BOT-BC298393  Eriophyllum ambiguum var. paleaceum John Thomas Howell 1962-5-22 37293 Tulare Kern River Canyon above Roads End 1097 Comment
  CAS-BOT-BC214202  Scutellaria bolanderi John Thomas Howell 1962-5-22 37275 Tulare Kern River Canyon above Roads End, Sierra Nevada 1097 Comment
  UCD105253  Astragalus purshii var. tinctus John Thomas Howell 1962-5-22 37272 Tulare Kern River Canyon above Roads End, Sierra Nevada. 1097 Comment
  CAS-BOT-BC166132  Epilobium canum John Thomas Howell 1970-9-22 47291 Tulare Kern River Canyon, 3 miles south of Hospital Flat 853 Comment
  SBBG47389  Marsilea vestita J. T. Howell 1962-9-21 38683 Kern Kern River Cyn 426 Comment
  CAS-BOT-BC247072  Poa secunda subsp. juncifolia John Thomas Howell 1962-9-25 38903 Kern Kernville 807 Comment
  CAS-BOT-BC273516  Hordeum vulgare John Thomas Howell 1962-5-21 37136 Kern Kernville 807 Comment
  SEINET7296608 Image available Schismus arabicus John Thomas Howell 1962-1 37140 Kern Kernville 808 Comment
  JEPS48074  Mimulus androsaceus J. T. Howell 1960-3-25 35179 Kern near Kernville; Wofford Heights Comment
  CAS-BOT-BC201701  Deschampsia danthonioides John Thomas Howell 1953-5-25 29052 A Tuolumne 2.5 miles from Keystone on road to Sonora 335 Comment
  RSA99627  Poa tenerrima J. T. Howell 1953-5-25 29052 Tuolumne 2.5 miles from Keystone on road to Sonora. Comment
  CAS-BOT-BC29902  Acroptilon repens John Thomas Howell 1933-7-2 11419 Monterey 6 miles north of King City 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
  CAS-BOT-BC141261  Phoradendron serotinum subsp. tomentosum John Thomas Howell 1970-6-9 46567 Fresno Kings Canyon Road above Horseshoe Bend. Sierra Nevada 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-BC103034  Salix bonplandiana John Thomas Howell 1926-6-13 2030 Stanislaus Knight's Ferry 76 Comment
  CAS-BOT-BC444574  Lewisia triphylla John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-22 54103 Plumas 10.6 miles northeast of La Porte on road to Quincy 1889 Comment
  CAS-BOT-BC444744  Montia chamissoi John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-22 54107 Plumas 10.6 miles northeast of La Porte on road to Quincy 1889 Comment
  CAS-BOT-BC391878  Anemone grayi John Thomas Howell 1940-5-12 15413 Marin Lagunitas Creek Comment
  CAS-BOT-BC57544  Equisetum telmateia John Thomas Howell 1940-5-12 15416 Marin Lagunitas Creek Comment
  UC1177512  Equisetum telmateia subsp. braunii John Thomas Howell 1940-5-12 15416 Marin Lagunitas Creek Comment
  UC905015  Carex subbracteata John Thomas Howell 1943-5-22 18158 Marin Lagunitas Meadows Comment
  RSA121026  Holocarpha virgata subsp. virgata J. T. Howell 1956-9-13 31876 Marin Lagunitas Meadows near Lake Lagunitas. Comment
  CAS-BOT-BC253717  Panicum capillare John Thomas Howell 1970-9-25 47465 Kern Lake Isabella 5 miles S of Kernville 792 Comment
  POM226231  Cirsium andrewsii J. T. Howell 1933-7-9 11424 San Francisco Lake Merced Comment
  CAS-BOT-BC25090  Arctostaphylos crustacea subsp. rosei John Thomas Howell 1934-3-9 11772 San Francisco Lake Merced, San Francisco Comment
  CAS-BOT-BC284027  Cirsium brevistylum John Thomas Howell 1926-4-24 1952 San Francisco Lake Merced, San Francisco Comment
  CAS-BOT-BC45157  Anaphalis margaritacea John Thomas Howell 1926-4-24 1941 San Francisco Lake Merced, San Francisco Comment
  UCD134876  Pentachaeta exilis John Thomas Howell 1976-4-28 51615 Lake Lake Phillsbury near Scott Dam. 548 Comment
  POM224080  Gnaphalium luteoalbum J. T. Howell 1935-1-13 12578 San Mateo Lake San Andreas. Comment
  CAS-BOT-BC466322  Sarcodes sanguinea John Thomas Howell 1973-7-10 49786 Unknown Lake Tahoe (county nt specified) Comment
  GH341870  Vulpia microstachys var. pauciflora J. T. Howell 1943-5-11 18020 Unknown 1 miles south of Lakeport Comment
  GH361282  Vulpia microstachys var. ciliata J. T. Howell 1943-5-11 18023 Unknown 1 mile south of Lakeport Comment
  GH361301  Vulpia microstachys var. ciliata J. T. Howell 1943-5-11 18021 Unknown 1 miles south of Lakeport Comment
  CAS-BOT-BC163319  Clarkia modesta John Thomas Howell 1943-5-10 18004 Lake 5 miles west of Lakeport on road to Hopland Comment
  CAS-BOT-BC88414  Thysanocarpus curvipes John Thomas Howell 1976-4-29 51619 Lake 2.5 miles south of Lakeport. 426 Comment
  CAS-BOT-BC185716  Vulpia myuros subsp. megalura John Thomas Howell 1956-3-19 31112 San Diego Lakeside Comment
  CAS-BOT-BC250260  Eriogonum fasciculatum var. polifolium John Thomas Howell; Gordon H. True 1967-8-8 43544 Tulare 2 miles from Lamont Meadow on road to Long Valley, Kern Plateau 1645 Comment
  CAS-BOT-BC69482  Cheilanthes covillei John Thomas Howell; Gordon H. True 1967-8-8 43560 Tulare 5.7 mi. from Lamont Meadow on road to Long Valley, Kern Plateau. 1584 Comment
  RSA201304  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  CAS-BOT-BC116992  Carex straminiformis John Thomas Howell 1960-8-23 36452 Shasta Lassen Loop N of Diamond Peak. 2255 Comment
  UCD141878  Juncus mertensianus John Thomas Howell 1960-8-21 36314 Shasta Lassen Loop east of Diamond Peak. Lassen Volcanic National Park. 2225 Comment
  UCD95114  Corydalis caseana subsp. caseana John Thomas Howell 1960-8-18 36065 Tehama Lassen Volcanic National Park. Bluff Falls. 1981 Comment
  CAS-BOT-BC310406  Eucephalus breweri John Thomas Howell 1960-8-19 36166 Tehama Lassen Volcanic National Park. Brokeoff Mt. Trail 2682 Comment
  CAS-BOT-BC203835  Elymus X hansenii John Thomas Howell 1960-7-18 35597 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  CAS-BOT-BC204249  Elymus trachycaulus subsp. subsecundus John Thomas Howell 1960-7-18 35607 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  CAS-BOT-BC279952  Cirsium douglasii var. breweri John Thomas Howell 1960-7-24 35986 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  CAS-BOT-BC286451  Cirsium scariosum John Thomas Howell 1960-7-24 35985 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  CAS-BOT-BC286453  Cirsium scariosum John Thomas Howell 1960-7-24 35982 Plumas Lassen Volcanic National Park. Drakesbad 1828 Comment
  UCD103839  Acmispon americanus var. americanus John Thomas Howell 1960-7-18 35568 Plumas Lassen Volcanic National Park. Drakesbad. 1676 Comment
  UCD140125  Carex aurea John Thomas Howell 1960-7-18 35508 Plumas Lassen Volcanic National Park. Drakesbad. 1676 Comment
  UCD50595  Achnatherum lemmonii John Thomas Howell 1960-7-22 35887 Plumas Lassen Volcanic National Park. Drakesbad. 1676 Comment
  UCD60679  Danthonia californica var. americana John Thomas Howell 1960-7-22 35888 Plumas Lassen Volcanic National Park. Drakesbad. 1676 Comment
  CAS-BOT-BC74672  Rorippa curvisiliqua John Thomas Howell 1960-8-22 36334 Shasta Lassen Volcanic National Park. Manzanita Lake. 1783 Comment
  CAS-BOT-BC388191  Cerastium fontanum John Thomas Howell 1960-7-19 35612 Plumas Lassen Volcanic National Park. Near buildings, Drakesbad 1828 Comment
  CAS-BOT-BC148704  Bromus carinatus var. marginatus John Thomas Howell 1960-7-21 35822 Plumas Lassen Volcanic National Park. Terminal Geyser. 1798 Comment
  CAS-BOT-BC34224  Carex canescens John Thomas Howell 1961-6-19 36517 Shasta Lassen Volcanic National Park. Wet margin of Manzanita Lake. 1783 Comment
  UCD101326  Eriogonum ursinum John Thomas Howell 1960-8-19 36179 Shasta Lassen Volcanic National Park; Brokeoff Mt. 2743 Comment
  CAS-BOT-BC528896  Veratrum californicum John Thomas Howell 1960-7-18 35505 Plumas Lassen Volcanic National Park; Drakesbad 1828 Comment
  UCD99291  Spergularia rubra John Thomas Howell 1960-8-18 36106 Tehama Lassen Volcanic National Park; Sulphur Works Entrance Station. 2011 Comment
  UCD52363  Agrostis exarata John Thomas Howell 1945-6-24 21234 Marin Laurel Dell, Mt. Tamalpais. Comment
  CAS-BOT-BC105851  Chrysothamnus viscidiflorus subsp. viscidiflorus John Thomas Howell 1969-9-14 46209 Mono Leavitt Meadow - Sierra Nevada 2194 Comment
  RSA518965  Ceanothus velutinus J. T. Howell 1969-9-14 46210 Mono Leavitt Meadow. 2195 Comment
  UC1106191  Soliva sessilis John Thomas Howell 1946-5-26 Marin near Ledum Swamp Comment
  CAS-BOT-BC119037  Carex pellita John Thomas Howell; J. W. Stacey 1936-6-7 12639 Marin Ledum Swamp on road to Point Reyes. Comment
  CAS-BOT-BC292791  Ericameria bloomeri John Thomas Howell 1945-9-26 21509 Tuolumne Lembert Dome, Tuolumne Meadows Comment
  CAS-BOT-BC425295  Heuchera rubescens John Thomas Howell 1944-8-11 20325 Tuolumne Lembert Dome, Tuolumne Meadows Comment
  CAS-BOT-BC62194  Selaginella wallacei John Thomas Howell; Gordon H. True 1967-5-9 42215 Plumas Lewisia Rock, 3.5 miles southwest of Beldon, Feather River Canyon 609 Comment
  CAS-BOT-BC281296  Melica harfordii John Thomas Howell 1969-6-23 45799 Plumas Lewisia Rock, Feather RIver Canyon 609 Comment
  CAS-BOT-BC447456  Tellima grandiflora John Thomas Howell 1962-6-16 37639 Plumas Lewisia Rock, Feather River North Fork. 640 Comment
  CAS-BOT-BC344543  Madia exigua John Thomas Howell 1980-5-20 53561 Siskiyou Lightning Grade Road between Oro Fino and Fort Jones 868 Comment
  CAS-BOT-BC215694  Monardella beneolens John Thomas Howell 1949-8-12 26254 Inyo Little Cottonwood Creek 3108 Comment
  CAS-BOT-BC240997  Castilleja pilosa John Thomas Howell 1949-8-13 26262 Inyo Little Cottonwood Creek 3048 Comment
  CAS-BOT-BC272594  Eriogonum spergulinum var. reddingianum John Thomas Howell 1949-8-13 26258 Inyo Little Cottonwood Creek 3048 Comment
  CAS-BOT-BC355665  Orochaenactis thysanocarpha John Thomas Howell 1949-7-17 25433 Inyo Little Cottonwood Creek 2987 Comment
  A363047  Rhododendron columbianum J. T. Howell 1942-7-29 17363 Unknown Little Five Lakes Basin Comment
  CAS-BOT-BC168337  Eremogone congesta var. congesta John Thomas Howell 1942-7-29 17364 Tulare Little Five Lakes Basin Comment
  CAS-BOT-BC420090  Polygonum polygaloides subsp. kelloggii John Thomas Howell 1942-8-6 17762 Tulare Little Five Lakes Basin Comment
  CAS-BOT-BC379305  Ranunculus alismifolius var. alismellus John Thomas Howell 1942-8-2 17585 Tulare Little Five Lakes Basin Comment
  POM225348  Hemizonia fasciculata J. T. Howell 1931-5-29 6565 Ventura Little Sycamore Creek on Malibu Hwy to Oxnard Comment
  CAS-BOT-BC247242  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True 1967-8-9 43693 Tulare Little Troy Meadow, Kern Plateau 2346 Comment
  CAS-BOT-BC70698  Cystopteris fragilis John Thomas Howell 1969-9-13 46102 Sierra Little Truckee River near outlet of Webber Lake 2042 Comment
  CAS-BOT-BC299462  Ericameria nauseosa var. speciosa John Thomas Howell 1969-9-13 46100 Sierra Little Truckee River near outlet of Webber Lake, Sierra Nevada 2042 Comment
  CAS-BOT-BC138884  Agrostis pallens John Thomas Howell 1949-7-29 25894 Tulare Little Whitney Meadow. 2590 Comment
  UC912539  Lessingia germanorum John Thomas Howell 1926-8-12 2180 San Francisco Lone Mt. San Francisco 91 Comment
  CAS-BOT-BC304326  Galinsoga parviflora John Thomas Howell 1950-8-29 27433 Inyo Lone Pine Comment
  CAS-BOT-BC343509  Madia gracilis John Thomas Howell 1954-6-7 29985 Tuolumne 4 miles ne. of Long Barn Comment
  CAS-BOT-BC308239  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1954-6-7 29983 Tuolumne 4 miles ne. of Long Barn, Sierra Nevada Comment
  CAS-BOT-BC395192  Aquilegia pubescens John Thomas Howell 1946-7-28 22809 Inyo Long Lake, Rock Creek Lake Basin 3230 Comment
  CAS-BOT-BC429117  Micranthes odontoloma John Thomas Howell 1946-7-16 22447 Inyo Long Lake, Rock Creek Lake Basin 3230 Comment
  CAS-BOT-BC10762  Mimulus suksdorfii John Thomas Howell 1938-8-8 s.n. Mono Long Valley Comment
  CAS-BOT-BC142732  Ivesia kingii John Thomas Howell 1938-8-8 14380 Mono Long Valley Comment
  CAS-BOT-BC462959  Allium bisceptrum John Thomas Howell; Gordon H. True 1967-7-3 42885 Tulare about 1.5 miles northeast of Long Valley on road to Chimney Meadow, Kern Plateau, Sierra Nevada 2103 Comment
  UCD130415  Chondrilla juncea John Thomas Howell 1966-7-29 42033 Placer 1 mile northeast of Loomis. Sierra Nevada, CA. 121 Comment
  CAS-BOT-BC420091  Polygonum polygaloides subsp. kelloggii John Thomas Howell 1942-8-7 17774 Tulare Lost Canyon 3048 Comment
  CAS-BOT-BC148260  Rosa woodsii var. ultramontana John Thomas Howell 1947-7-21 23451 San Bernardino Lost Creek, San Bernardino Mts. 1920 Comment
  CAS-BOT-BC404205  Urtica dioica subsp. holosericea John Thomas Howell 1947-7-21 23454 San Bernardino Lost Creek, San Bernardino Mts. 1920 Comment
  CAS-BOT-BC114224  Cyperus flavescens John Thomas Howell 1959-9-20 34638 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. Comment
  CAS-BOT-BC24831  Arctostaphylos glandulosa subsp. cushingiana John Thomas Howell 1954-2-28 29128 Marin Lower part of Throckmorton Ridge near Matt Davis Trail, Mt. Tamalpais Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  CAS-BOT-BC186725  Astragalus gambelianus John Thomas Howell 1965-4-25 41052 Madera 1.5 mile north-west of Madera 82 Comment
  CAS-BOT-BC203429  Elymus glaucus subsp. glaucus John Thomas Howell 1962-6-15 37488 Butte Magalia 731 Comment
  CAS-BOT-BC362954  Rigiopappus leptocladus John Thomas Howell 1962-6-16 37559 Butte Magalia 731 Comment
  CAS-BOT-BC38612  Arctostaphylos mewukka subsp. truei John Thomas Howell 1967-6-22 42636 Butte Magalia 701 Comment
  CAS-BOT-BC484558  Brodiaea minor John Thomas Howell 1967-6-22 42607 Butte Magalia 701 Comment
  CAS-BOT-BC484560  Brodiaea minor John Thomas Howell 1955-6-14 30437 Butte Magalia 731 Comment
  SEINET7559905 Image available Carex globosa John Thomas Howell 1962-6-16 37537 Butte Magalia. 732 Comment
  CAS-BOT-BC195548  Deschampsia elongata John Thomas Howell; Gordon H. True 1970-6-24 46761 Tulare Manter Meadow, Kern Plateau 2133 Comment
  CAS-BOT-BC315973  Hulsea vestita subsp. vestita John Thomas Howell; Gordon H. True 1971-7-14 48437 Tulare Manter Meadow, Kern Plateau, Sierra Nevada 2164 Comment
  CAS-BOT-BC115405  Carex utriculata John Thomas Howell 1960-8-22 36331 Shasta Manzanita Lake 1783 Comment
  UCD110719  Populus trichocarpa John Thomas Howell 1960-8-22 36356 Shasta Manzanita Lake. 1783 Comment
  HSC7172  Carex spectabilis J. T. Howell 1939-8-9 15226 Siskiyou Marble Mtns., S of Marble Valley Comment
  CAS-BOT-BC241087  Castilleja schizotricha John Thomas Howell 1939-8-4 15043 Siskiyou Marble Rim, Marble Mts. 1889 Comment
  CAS-BOT-BC437155  Lithophragma heterophyllum John Thomas Howell; Gordon H. True 1969-5-14 45744 Tulare Marble ridge just north of Cherry Hill Road at start of Rincon Trail, Brush Creek Canyon 1463 Comment
  CAS-BOT-BC307403  Gnaphalium palustre John Thomas Howell 1930-5-10 4774 Riverside March Field Comment
  CAS-BOT-BC419219  Persicaria maculosa John Thomas Howell 1964-4-29 40646 Mariposa Mariposa 609 Comment
  CAS-BOT-BC388479  Herniaria John Thomas Howell 1964-4-29 40644 Mariposa Mariposa 609 Comment
  CAS-BOT-BC71081  Marsilea vestita John Thomas Howell 1926-5-2 1963 Merced Mariposa Creek, 10 miles SW. of Merced Comment
  CAS-BOT-BC272077  Centaurea cyanus John Thomas Howell 1963-7-10 39722 Alpine Markleeville, Sierra Nevada 1676 Comment
  CAS-BOT-BC88255  Thysanocarpus curvipes John Thomas Howell 1934-4-8 11822 Contra Costa Marsh Creek Road southwest of Brentwood. Comment
  CAS-BOT-BC390593  Spergularia rubra John Thomas Howell 1954-5-18 29777 Amador 4.5 miles west of Martel Comment
  UCD115608  Sisymbrium orientale John Thomas Howell 1940-5-27 s.n. San Francisco Masonic Avenue, Geary Boulevard in San Francisco. Comment
  CAS-BOT-BC384489  Silene antirrhina John Thomas Howell 1942-7-5 17011 Marin Matt Davis Trail, Mt. Tamalpais Comment
  CAS-BOT-BC203808  Elymus glaucus subsp. virescens John Thomas Howell 1947-5-14 23161 Marin McClure Beach Comment
  CAS-BOT-BC32226  Carex multicostata John Thomas Howell 1951-6-27 27593 Plumas McRae Meadow. 1981 Comment
  CAS-BOT-BC215530  Monardella odoratissima John Thomas Howell; Gordon H. True 1972-8-7 7307 Tuolumne Meadow 0.8 miles west of Sonora Pass 2773 Comment
  JEPS58952  Castilleja subinclusa subsp. franciscana John Thomas Howell 1946-5-19 21914 Marin Meadow Club Fairfax Hills (Fairfax Hills) Comment
  CAS-BOT-BC343281  Madia gracilis John Thomas Howell; Gordon H. True 1967-7-9 43273 Plumas Meadow at Quincy 1036 Comment
  RSA40031  Hackelia nervosa J. T. Howell 1943-7-20 18631 Nevada Meadow nw. of Castle Peak. Comment
  CAS-BOT-BC88485  Thysanocarpus curvipes John Thomas Howell 1946-5-19 12913 Marin Meadows Club, Fairfax Hills. Comment
  CAS-BOT-BC90888  Artemisia pycnocephala John Thomas Howell 1930-9-14 5475 Mendocino Mendocino coastal plain 4.5 miles n. of Ft. Bragg Comment
  CAS-BOT-BC284900  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-2 37410 Merced Merced Comment
  UC389933  Pilularia americana J. T. Howell Apr. 1929 4175 Merced 2 mi nw Merced Comment
  CAS-BOT-BC306277  Hedypnois cretica John Thomas Howell 1925-5-9 1023 Merced 3 miles sw. of Merced Comment
  UC702986  Phacelia cicutaria var. cicutaria John Thomas Howell 1929-4-14 4158 Mariposa hills e Merced Falls Comment
  CAS-BOT-BC168560  Atriplex confertifolia John Thomas Howell 1926-6-18 2037 Merced Merced Plains, 3 miles sw. of Merced Comment
  CAS-BOT-BC153406  Diplacus layneae John Thomas Howell 1964-4-27 40538 Mariposa Merced River Canyon just west of El Portal 640 Comment
  CAS-BOT-BC295964  Erigeron philadelphicus John Thomas Howell 1925-5-10 1042 Merced Merced River bottom between Snelling and Merced Falls Comment
  CAS-BOT-BC423375  Wislizenia californica John Thomas Howell 1926-6-18 2038 Merced Merced plains, 6 miles sw. of Merced Comment
  CAS-BOT-BC195644  Distichlis spicata John Thomas Howell 1926-6-20 2046 Merced Merced road, 6 miles ne. of Los Banos Comment
  CAS-BOT-BC268397  Eriogonum roseum John Thomas Howell 1937-7-5 13096 Santa Clara Metcalf Road in hills east of Coyote Comment
  CAS-BOT-BC168395  Eremogone kingii John Thomas Howell 1963-7-12 39847 El Dorado Meyers - Sierra Nevada 1935 Comment
  CAS-BOT-BC147767  Holodiscus microphyllus var. microphyllus John Thomas Howell 1944-8-3 19860 Tuolumne Middle Fork Stanislaus River 1859 Comment
  CAS-BOT-BC356637  Pseudognaphalium biolettii John Thomas Howell; R. C. Barneby 1954-5-8 29216 Tulare Middle Fork Tule River Canyon, 5 miles above Springville 548 Comment
  CAS-BOT-BC59317  Antennaria argentea John Thomas Howell; Gordon True 1969-6-23 45821 Plumas Middle Fork of Feather River at Nelson Point 1249 Comment
  CAS-BOT-BC38973  Arctostaphylos manzanita subsp. elegans John Thomas Howell 1930-3-23 4569 Lake 4 miles from Middletown on road to Adams Springs Comment
  RSA91171  Lessingia ramulosa John T. Howell 1930-8-24 5450 Lake 4 miles from Middletown on the Adams Spring Road. Comment
  CAS-BOT-BC162442  Bromus laevipes John Thomas Howell 1943-5-11 18056 Lake 2.9 miles north of Middletown. Comment
  SBBG29780  Erysimum capitatum var. capitatum J. T. Howell 1938-4-10 13746 Alameda near Midway Comment
  RSA201403  Cuscuta salina var. major J. T. Howell 1944-7-30 s.n. Marin below Mill Valley Comment
  CAS-BOT-BC272631  Eriogonum spergulinum var. reddingianum John Thomas Howell 1958-8-9 34250 Madera Miller Meadow 2103 Comment
  CAS-BOT-BC213513  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1969-8-25 45917 Tulare Mineral King - Sierra Nevada 2377 Comment
  CAS-BOT-BC156775  Solanum umbelliferum J. T. Howell 1942-7-26 17251 Tulare Mineral King Comment
  CAS-BOT-BC222781  Perideridia parishii John Thomas Howell 1969-8-28 46015 Tulare Mineral King 2377 Comment
  CAS-BOT-BC365603  Solidago elongata John Thomas Howell 1942-7-26 17211 Tulare Mineral King Comment
  CAS-BOT-BC391249  Stellaria longipes subsp. longipes John Thomas Howell 1942-7-26 17208 Tulare Mineral King Comment
  CAS-BOT-BC422183  Rumex californicus John Thomas Howell 1969-8-26 45963 Tulare Mineral King 2377 Comment
  CAS-BOT-BC70777  Cystopteris fragilis John Thomas Howell 1942-7-25 17141 Tulare Mineral King Comment
  CAS-BOT-BC97594  Symphyotrichum ascendens John Thomas Howell 1969-8-26 45970 Tulare Mineral King 2377 Comment
  CAS-BOT-BC478114  Allium validum John Thomas Howell; Gordon H. True 1969-8-28 46012 Tulare Mineral King 2377 Comment
  CAS-BOT-BC519394  Triantha occidentalis subsp. occidentalis John Thomas Howell 1951-7-21 28082 Tulare Mineral King and Vicinity, White Chief Region 3048 Comment
  CAS-BOT-BC364184  Senecio serra John Thomas Howell 1951-7-22 28105 Tulare Mineral King and Vicinity. Mineral King Comment
  CAS-BOT-BC362784  Raillardella argentea John Thomas Howell 1951-7-18 27913 Tulare Mineral King and Vicinity. West side, Franklin Pass 3352 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-BC294334  Ericameria nauseosa var. speciosa John Thomas Howell 1951-7-19 27945 Tulare Mineral King and vicinity. Monarch Lakes Trail 2438 Comment
  CAS-BOT-BC9296  Carex orestera John Thomas Howell 1951-7-20 28037 Tulare Mineral King and vicinity. Near tarn east of Farewell Gap 3352 Comment
  CAS-BOT-BC243282  Poa secunda subsp. secunda John Thomas Howell 1951-7-17 27829 Tulare Mineral King and vicinity. White Chief Trail 2743 Comment
  CAS-BOT-BC254700  Poa cusickii subsp. epilis John Thomas Howell 1951-7-17 27825 Tulare Mineral King and vicinity. White Chief Trail 2743 Comment
  RSA928  Peucephyllum schottii J. T. Howell 1927-8-1 531 Riverside Mission Creek, Colorado Desert. 610 Comment
  CAS-BOT-BC145110  Phacelia mohavensis John Thomas Howell; Gordon H. True 1970-6-26 46837 Tulare Mixed conifer fores at True Meadow, Kern Plateau 2225 Comment
  CAS-BOT-BC305009  Grindelia hirsutula J. T. Howell 1929-12-5 4550 Stanislaus 1 1/2 miles se. of Modesto Comment
  RSA428840  Lycium cooperi J. T. Howell 1948-4-25 24250 Kern Mohave Desert N. of Ricardo. Comment
  CAS-BOT-BC239893  Schismus arabicus John Thomas Howell 1948-4-26 24268 Kern 2 miles north of Mohave [Mojave] Comment
  CAS-BOT-BC90414  Artemisia douglasiana John Thomas Howell 1955-7-19 30826 A Plumas Mohawk 1371 Comment
  UC1042552  Chamaesyce prostrata John Thomas Howell 1950-7-11 26642 Kern Mojave Comment
  UCR89185  Verbena litoralis J. T. Howell 1954-9-5 30055 Amador Mokelumne River Birdge on Hwy 49. Between Jackson and Mokelumne Hill Comment
  CAS-BOT-BC78424  Pinus balfouriana John Thomas Howell 1950-7-24 27291 Tulare Monache Creek S. Fk. 2895 Comment
  CAS-BOT-BC129107  Salix scouleriana John Thomas Howell 1950-7-24 27272 Tulare Monache Creek, S. Fk. 2743 Comment
  GH384943  Frasera tubulosa J. T. Howell 1950-7-21 27155 Unknown Monache Mt. 2468 Comment
  CAS-BOT-BC329013  Tetradymia canescens John Thomas Howell 1963-8-22 40288 Alpine about 0.5 miles west of Monitor Pass 2529 Comment
  UC1543892  Juncus hemiendytus var. abjectus John Thomas Howell 1963-7-10 39753 Alpine 0.5 mi w Monitor Pass; Sierra Nevada 2529 Comment
  NY446330  Minuartia rubella J. T. Howell 1946-7-26 22774 Inyo Mono Mesa 3657.6 Comment
  CAS-BOT-BC47025  Jamesia americana var. rosea John Thomas Howell 1946-7-26 22775 Fresno Mono Mesa above Gold Lake. Comment
  CAS-BOT-BC41249  Draba oligosperma John Thomas Howell 1946-7-24 22696 Inyo Mono Mesa. 3657 Comment
  CAS-BOT-BC278561  Festuca saximontana John Thomas Howell 1944-8-16 20651 Mono Mono Pass Comment
  CAS-BOT-BC90063  Arnica nevadensis John Thomas Howell 1944-8-16 20591 Tuolumne Mono Pass Trail Comment
  CAS-BOT-BC232834  Phlox pulvinata John Thomas Howell 1941-7-22 16387 Unknown Mono Pass, Fresno and Inyo counties 3657 Comment
  CAS-BOT-BC14143  Boechera pendulocarpa John Thomas Howell 1944-8-16 20645 Mono Mono Pass. Comment
  CAS-BOT-BC255155  Poa cusickii subsp. epilis John Thomas Howell 1946-7-20 22537 Fresno Mono Rock 3352 Comment
  CAS-BOT-BC34095  Carex breweri John Thomas Howell 1946-7-20 22540 Fresno Mono Rock. 3352 Comment
  CAS-BOT-BC144626  Ribes sanguineum var. glutinosum John Thomas Howell 1964-6-30 40860 San Luis Obispo in Monterey pine forest, Cambria Comment
  CAS-BOT-BC305513  Helianthus bolanderi John Thomas Howell 1933-9-17 11686 Solano Montezuma Hills Comment
  CAS-BOT-BC151260  Diplacus torreyi John Thomas Howell; Alice Eastwood 1940-6-10 7889 Shasta Montgomery Creek Comment
  CAS-BOT-BC128071  Salix lasiandra var. lasiandra John Thomas Howell 1960-8-20 36234 Tehama Morgan - near Lassen volcanic National Park 1463 Comment
  CAS-BOT-BC76932  Pilularia americana John Thomas Howell 1930-5-21 5195 Santa Clara 1 mile south of Morgan Hill Comment
  CAS-BOT-BC125907  Salix planifolia John Thomas Howell 1946-7-14 22247 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC216449  Achnatherum occidentale subsp. californicum John Thomas Howell 1946-7-14 22260 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC256000  Poa pratensis John Thomas Howell 1946-7-15 22374 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC260578  Muhlenbergia filiformis John Thomas Howell 1946-7-14 22332 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC392172  Aquilegia formosa John Thomas Howell 1946-7-14 22274 Inyo Mosquito Flat, Rock Creek Lake Basin 3139 Comment
  CAS-BOT-BC317080  Packera pauciflora John Thomas Howell 1946-7-15 22375 Inyo Mosquito Flat, Rock Creek Lake Basin. 3139 Comment
  RSA69623  Juncus bryoides J. T. Howell 1946-7-17 22490 Inyo Mosquito Flat, Rock Creek Lake Basin. 3140 Comment
  CAS-BOT-BC20223  Carex filifolia var. erostrata John Thomas Howell 1946-7-14 22315 Inyo Mosquito Flat. Rock Creek Lake Basin. 3139 Comment
  CAS-BOT-BC241375  Castilleja latifolia John Thomas Howell 1963-9-4 40335 Monterey Moss Landing Comment
  CAS-BOT-BC85991  Quercus douglasii John Thomas Howell 1933-10-26 11720 Santa Clara Mount Hamilton, 15 miles from San Jose Comment
  CAS-BOT-BC13962  Boechera lemmonii John Thomas Howell 1942-7-31 17486 Tulare Mount Kaweah. Comment
  CAS-BOT-BC66479  Thysanocarpus curvipes John Thomas Howell 1930-3-23 4574 Napa Mount Saint Helena, 5 miles from Calistoga. Comment
  UC1177245  Prunus emarginata John Thomas Howell 1943-5-30 18191 Marin Mount Tamalpais, Arturo Trail Mount Tamalpais; , Arturo Trail Comment
  CAS-BOT-BC119521  Carex nudata John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight 1967-7-10 2170 Plumas Mouth of Butterfly Creek. 883 Comment
  CAS-BOT-BC62142  Selaginella hansenii John Thomas Howell 1929-4-21 4180 Mariposa 5 miles from Mt. Bullion on Cathay Valley Road Comment
  CAS-BOT-BC324645  Holocarpha virgata John Thomas Howell 1929-11-29 4549 Mariposa 5 miles from Mt. Bullion on raod to Cathay Valley Comment
  CAS-BOT-BC115258  Carex vernacula John Thomas Howell 1944-8-15 20560 Tuolumne Mt. Conness 3657 Comment
  CAS-BOT-BC218385  Podistera nevadensis John Thomas Howell 1944-8-15 20549 Tuolumne Mt. Conness 3505 Comment
  CAS-BOT-BC86927  Antennaria pulchella John Thomas Howell 1944-8-15 20575 Tuolumne Mt. Conness 3657 Comment
  CAS-BOT-BC115260  Carex vernacula John Thomas Howell 1938-8-11 14521 Tuolumne Mt. Dana 3200 Comment
  CAS-BOT-BC117226  Carex spectabilis John Thomas Howell 1938-8-11 14535 Tuolumne Mt. Dana 3352 Comment
  CAS-BOT-BC249563  Castilleja applegatei subsp. pallida John Thomas Howell 1938-8-11 14517 Tuolumne Mt. Dana 3200 Comment
  UC618535  Carex subnigricans John Thomas Howell 1938-8-11 14519 Tuolumne Mt. Dana; ; Mt. Dana, Tuolumne Co. 3200 Comment
  CAS-BOT-BC331614  Acer macrophyllum John Thomas Howell 1926-3-7 1661 Contra Costa Mt. Diablo near toll gate Comment
  A363930  Ribes aureum J. T. Howell 1930-4-6 4667 Unknown 9 miles from summit of Mt. Hamilton on road to San Antonio Valley Comment
  GH401054  Phacelia ramosissima J. T. Howell 1933-8-19 11617 Unknown Mt. Hermon, Santa Cruz Mts. Comment
  CAS-BOT-BC258407  Eriogonum rosense John Thomas Howell 1946-7-22 22626 Fresno Mt. Hopkins Comment
  CAS-BOT-BC432864  Micranthes tolmiei John Thomas Howell 1946-7-22 22617 Fresno Mt. Hopkins Comment
  CAS-BOT-BC363668  Senecio fremontii var. occidentalis John Thomas Howell 1942-7-31 17452 Tulare Mt. Kaweah Comment
  POM303632  Galium grayanum var. grayanum J. T. Howell 1943-7-26 18840 Placer Mt. Lincoln. Comment
  RSA121048  Melica californica J. T. Howell 1957-5-19 32333 Stanislaus Mt. Oso. 1006 Comment
  CAS-BOT-BC312616  Hulsea vestita subsp. pygmaea John Thomas Howell 1947-7-25 23670 San Bernardino Mt. San Gorgonio, San Bernardino Mts. 3505 Comment
  CAS-BOT-BC279884  Cirsium douglasii var. breweri John Thomas Howell 1952-6-14 28329 Siskiyou Mt. Shasta City Comment
  CAS-BOT-BC62462  Quercus chrysolepis John Thomas Howell 1926-10-3 2201 Napa Mt. St. Helena Comment
  GH417632  Grindelia hirsutula var. davyi J. T. Howell 1930-7-13 5346 Unknown Mt. St. Helena Comment
  A349670  Ceanothus jepsonii J. T. Howell 1937-7-18 13100 Unknown Mt. St. Helena Creek, n. Napa Co. Comment
  CAS-BOT-BC323045  Tonestus eximius John Thomas Howell 1946-8-31 22935 El Dorado Mt. Tallac 2956 Comment
  UC1181369  Gentiana calycosa John Thomas Howell 1946-8-31 22928 El Dorado Mt. Tallac 2895 Comment
  CAS-BOT-BC421921  Rumex acetosella John Thomas Howell 1946-8-31 22942 El Dorado Mt. Tallac 2956 Comment
  A365994  Mimulus aurantiacus J. T. Howell 1947-1-12 Unknown south side of Mt. Tamalpais Comment
  RSA145  Lithocarpus densiflorus var. densiflorus J. T. Howell 1927-8-22 674 Marin Mt. Tamalpais near West Point. 518 Comment
  CAS-BOT-BC196168  Lupinus albifrons var. douglasii John Thomas Howell 1939-6-25 14806 Marin Mt. Tamalpais. Above Cascade Canyon Comment
  UC1106189  Microseris bigelovii John Thomas Howell 1947-4-23 23070 Marin w of Mt. Vision; Drakes Estero Comment
  CAS-BOT-BC170830  Mentzelia tridentata John Thomas Howell 1930-5-13 4947 Kern Mud hills near Red Rock Canyon, nw. Mojave Desert Comment
  CAS-BOT-BC9619  Delphinium californicum John Thomas Howell 1946-6-20 22091 Marin Muir Beach Comment
  CAS-BOT-BC102570  Populus fremontii John Thomas Howell 1963-8-7 40090 Monterey Mustang Grade between Mustang Summit and Priest Valley Comment
  CAS-BOT-BC203589  Elymus glaucus subsp. glaucus John Thomas Howell 1963-6-21 39484 Monterey Mustang Grade east of San Lorenzo Creek Comment
  CAS-BOT-BC478900  Bloomeria crocea var. crocea John Thomas Howell 1963-6-21 39487 Monterey Mustang Grade east of San Lorenzo Creek Comment
  SBBG41047  Festuca microstachys J. T. Howell 1963-5-5 39047 Monterey Mustang Grade, W of Priest Valley 670 Comment
  CAS-BOT-BC91431  Clematis lasiantha John Thomas Howell 1963-5-5 39017 Monterey Mustang Grade, west of Priest Valley. 670 Comment
  CAS-BOT-BC132624  Calochortus uniflorus John Thomas Howell 1926-3-27 1757 Napa Myrtledale Hot Springs near Calistoga Comment
  CAS-BOT-BC395167  Aquilegia formosa John Thomas Howell; Gordon H. True 1970-6-24 46740 Tulare N Manter Creek, Big Meadow to Manter Meadow, Kern Plateau 2438 Comment
  CAS-BOT-BC117830  Carex specifica John Thomas Howell; Gordon H. True 1967-8-9 43671 Tulare 4.5 miles N of Blackrock Guard Station on Monache Jeep Trail. 2682 Comment
  RSA218027  Malacothamnus palmeri var. involucratus J. T. Howell 1957-4-27 s.n. Monterey 8 miles N of Carmel Valley. 183 Comment
  CAS-BOT-BC178116  Astragalus lentiginosus var. nigricalycis John Thomas Howell 1931-3-20 5889 Kern 3 miles N of Devil's Den at Kings-Kern county line. Comment
  RSA217989  Lepidium latipes J. T. Howell 1963-5-6 39135 Monterey 3 miles N of Jolon. 335 Comment
  SBBG27967  Harmonia hallii J. T. Howell 1943-5-11 Lake 2.9 mi N of Middletown Comment
  CDA2419  Schismus arabicus J. T. Howell 1948-4-26 24268 Kern 2 mi. N of Mohave. 0 Comment
  CAS-BOT-BC304237  Eriophyllum confertiflorum John Thomas Howell; Gordon H. True 1967-7-5 43161 Tulare 6 miles N of S Fork Kern River bridge on road to Troy Meadow, Kern Plateau 2286 Comment
  SBBG27977  Lessingia hololeuca J. T. Howell 1945-9-16 Marin N of San Rafael and E of Santa Venetia Comment
  LA54200  Monardella odoratissima subsp. glauca John Thomas Howell; 1934-6-10 11888 Lassen 12 mi. N of Susanville on rd to Horse Lake Comment
  POM204157  Hesperolinon micranthum J. T. Howell 1934-6-10 11887 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  CAS-BOT-BC179141  Mentzelia dispersa John Thomas Howell 1934-6-12 12042 Modoc N side of Fandango Valley. Comment
  CAS-BOT-BC321792  Layia gaillardioides John Thomas Howell 1933-4-30 11192 Marin N side of Mt. Tamalpais above Phoenix Lake Comment
  CAS-BOT-BC410108  Arceuthobium occidentale John Thomas Howell 1955-5-17 30162 Monterey N slope of Junipero Serra Peak, Santa Lucia Mountains 1737 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-BC46665  Arctostaphylos patula John Thomas Howell; Gordon H. True 1970-5-27 46541 El Dorado N. Leonardi Spring. 1280 Comment
  CAS-BOT-BC283411  Lolium multiflorum John Thomas Howell 1962-5-21 37194 Kern NE of Lake Isabella 792 Comment
  CAS-BOT-BC135281  Phoradendron juniperinum John Thomas Howell 1960-5-1 35226 Tuolumne NE of Long Barn Comment
  CAS-BOT-BC410072  Arceuthobium divaricatum John Thomas Howell; Gordon H. True 1967-5-30 42493 Tulare about 1.5 miles NE of Long Valley on road to Chimney Meadow, Kern Plateau 2103 Comment
  CAS-BOT-BC233569  Navarretia prostrata John Thomas Howell 1929-5-19 4212 Merced 8 miles NE of Merced Comment
  CAS-BOT-BC118228  Carex scopulorum var. bracteosa John Thomas Howell 1958-8-14 34427 Madera NE of Sadler Lake. 3200 Comment
  CAS-BOT-BC46377  Arctostaphylos patula John Thomas Howell; Gordon H. True 1971-7-15 48579 Tulare NE. of Taylor Meadow between Chruch Dome and Black Mt. Kern Plateau. 2316 Comment
  SBBG115825  Agrostis pallens J. T. Howell 1954-5-18 29784 a Amador ca. 2 mi NNE of Buena Vista 91 Comment
  CAS-BOT-BC113142  Eleocharis pachycarpa John Thomas Howell 1954-5-18 29840 Butte 1.5 mi NNE of Buena Vista 91 Comment
  CAS-BOT-BC252684  Chorizanthe membranacea John Thomas Howell 1954-5-17 29762 El Dorado 1 mile NW of Coloma, Sierra Nevada Comment
  CAS-BOT-BC283391  Lolium multiflorum John Thomas Howell 1954-5-18 s.n. Calaveras 5 miles NW of San Andreas Comment
  CAS-BOT-BC242985  Poa secunda subsp. secunda John Thomas Howell 1975-6-16 51151 Plumas 2 miles NW of Spring Garden 1173 Comment
  CAS-BOT-BC29833  Adenocaulon bicolor John Thomas Howell 1960-7-21 35835 Plumas NW of Willow Lake 1706 Comment
  CAS-BOT-BC8621  Delphinium hansenii John Thomas Howell 1962-7-11 38554 Kern NW slope of Black Mt., Greenhorn Mtns. 2133 Comment
  CAS-BOT-BC197084  Echinochloa crus-galli John Thomas Howell; Gordon H. True 1967-6-11 42552 Yolo NW. of Woodland Comment
  CAS-BOT-BC66484  Thysanocarpus curvipes John Thomas Howell 1931-4-2 6098 Napa Napa Range, 9 miles from Monticello on road to Napa. Comment
  CDA22449  Chorizanthe valida J. T. Howell, Catherine Best, Wilma Follette, G. H. True 1980-6-19 53718 Marin Near Abbotts Lagoon, Point Reyes Peninsula. 0 Comment
Read comments
Dec 20 2017
  CAS-BOT-BC82421  Arnica discoidea John Thomas Howell 1944-7-18 19836 Glenn Near Alder Springs Ranger Station Comment
  CAS-BOT-BC502745  Orobanche bulbosa John Thomas Howell 1955-7-7 30528 Monterey Near Bear Mt. on ridge between Bear and Santa Lucia creeks, Santa Lucia Mts. 1371 Comment
  CAS-BOT-BC143366  Ivesia sericoleuca John Thomas Howell 1955-7-20 30888 Sierra Near Calpine 1508 Comment
  CAS-BOT-BC388543  Herniaria hirsuta var. cinerea John Thomas Howell 1972-4-25 48705 Mariposa Near Camp Curry, Yosemite Valley 1219 Comment
  CAS-BOT-BC249967  Eriogonum fasciculatum var. foliolosum John Thomas Howell 1927-8-6 2942 San Diego Near Cardiff-by-the-sea Comment
  CAS-BOT-BC170524  Rhus aromatica John Thomas Howell 1976-5-17 51699 Kern Near Cedar Creek on road to Lumreau Creek, Farnsworth Ranch, ca. 3 mi. se. of Glannville - Greenhorn Mts., Sierra Nevada Comment
  SEINET10466724  Eleocharis macrostachya John Thomas Howell 1955-7-20 Howell 30886 Sierra Near Colpine, 4950 feet. 1510 Comment
  POM197769  Lessingia arachnoidea John T. Howell 1926-10-9 2220 a San Mateo Near Crystal Springs Lake Comment
  CAS-BOT-BC172110  Clarkia dudleyana John Thomas Howell 1928-6-10 3880 Los Angeles Near Deer Park, Monrovia Canyon, San Gabriel Mts. Comment
  CAS-BOT-BC35041  Carex densa John Thomas Howell 1945-5-6 s.n. Marin Near Dominican College. San Raphael. Comment
  CAS-BOT-BC159893  Prunus emarginata John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-26 53021 Calaveras Near Dorrington 1524 Comment
  CAS-BOT-BC364178  Senecio serra John Thomas Howell 1947-7-25 23632 San Bernardino Near Dry Lake, San Bernardino Mts. 2773 Comment
  CAS-BOT-BC10755  Mimulus suksdorfii John Thomas Howell 1925-6-10 1140 El Dorado Near Eagle Falls, Emerald Bay, Lake Tahoe. 1981 Comment
  CAS-BOT-BC252894  Eriogonum incanum John Thomas Howell 1951-7-16 27811 Tulare Near Eagle Lake, Mineral King and Vicinity 3048 Comment
  RSA95586  Lewisia pygmaea J. T. Howell 1951-7-16 27800 Tulare Near Eagle Lake. 2896 Comment
  RSA854  Ambrosia acanthicarpa J. T. Howell 1927-10-22 762 Orange Near Eastern Boundary, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC65936  Aspidotis densa John Thomas Howell 1945-9-29 21527 El Dorado Near Echo Lake Comment
  CAS-BOT-BC113606  Eleocharis acicularis var. occidentalis John Thomas Howell 1938-8-6 14271 Mono Near Fales Hot Springs. Comment
  SEINET10460829  Porterella carnosula Howell 1934-7-7 Howell 12466 Lassen Near Feather Lake Comment
  CAS-BOT-BC102740  Populus tremuloides John Thomas Howell 1947-8-8 23943 Inyo Near First Lake, Big Pine Lakes 3048 Comment
  CAS-BOT-BC293065  Ericameria parryi var. vulcanica John Thomas Howell; Gordon H. True 1967-9-20 43922 Tulare Near Fish Creek bridge on Troy Meadow - Kennedy Meadows road, Kern Plateau 2286 Comment
  CAS-BOT-BC83700  Calliscirpus brachythrix John Thomas Howell 1941-8-2 16691 Madera Near Garnet Lak4e 2956 Comment
  CAS-BOT-BC244542  Poa secunda subsp. secunda John Thomas Howell 1941-7-24 16425 Madera Near Garnet Lake 2956 Comment
  CAS-BOT-BC272633  Eriogonum spergulinum var. reddingianum John Thomas Howell 1941-8-3 16729 Madera Near Garnet Lake 2956 Comment
  CAS-BOT-BC349244  Microseris nutans John Thomas Howell 1941-7-30 16495 Madera Near Garnet Lake 2956 Comment
  GH341134  Danthonia intermedia J. T. Howell 1941-8-3 16727 Unknown Near Garnet Lake 2956 Comment
  POM304526  Epilobium glaberrimum subsp. fastigiatum J. T. Howell 1941-8-5 16778 Madera Near Garnet Lake 2957 Comment
  POM304527  Epilobium hallianum J. T. Howell 1941-8-3 16732 Madera Near Garnet Lake 2957 Comment
  CAS-BOT-BC115187  Carex vernacula John Thomas Howell 1941-8-5 16770 Madera Near Garnet Lake. 2956 Comment
  CAS-BOT-BC31221  Carex lenticularis var. impressa John Thomas Howell 1941-8-3 16742 Madera Near Garnet Lake. 2956 Comment
  CAS-BOT-BC87622  Streptanthus tortuosus John Thomas Howell 1941-7-24 16415 Madera Near Garnet Lake. 2956 Comment
  POM304505  Linanthus pungens subsp. pulchriflorus J. T. Howell 1941-7-30 16489 Madera Near Garnet Lake. 2957 Comment
  CAS-BOT-BC127687  Brickellia greenei John Thomas Howell 1943-8-8 19201 Tehama Near Government Flat Comment
  POM303615  Brickellia greenei J. T. Howell 1943-8-8 s.n. Tehama Near Government Flat Comment
  CAS-BOT-BC179014  Chorizanthe biloba var. immemora John Thomas Howell 1933-8-17 11551 San Benito Near Hernandez Comment
  POM203077  Ribes aureum var. gracillimum J. T. Howell 1933-4-23 11172 San Benito Near Hernandez. Comment
  RSA26582  Phacelia divaricata J. T. Howell 1933-4-23 11171 San Benito Near Hernandez. Comment
  CAS-BOT-BC283557  Lolium multiflorum John Thomas Howell 1938-5-28 13812 San Benito Near Hollister Comment
  RSA128528  Lessingia hololeuca John T. Howell 1946-9-8 s.n. Marin Near Ignacio Comment
  CAS-BOT-BC306358  Helenium amarum John Thomas Howell 1946-9-8 22987 Marin Near Ignacio Comment
  CAS-BOT-BC125766  Salix orestera John Thomas Howell 1958-8-12 34338 Madera Near Isberg Lake 2987 Comment
  GH379559  Erysimum capitatum var. perenne J. T. Howell 1958-8-13 34389 Unknown Near Isberg Lake 2987 Comment
  CAS-BOT-BC273499  Hordeum vulgare John Thomas Howell 1960-5-2 35233 Tuolumne Near Jacksonville 195 Comment
  CAS-BOT-BC281922  Carthamus lanatus John Thomas Howell 1944-8-18 20713 Tuolumne Near Jacksonville Comment
  CAS-BOT-BC72826  Pinus ponderosa John Thomas Howell 1960-8-20 36206 Tehama Near Lassen Volcanic National Park, Morgan 1463 Comment
  CAS-BOT-BC306537  Helenium bigelovii John Thomas Howell 1960-8-18 36074 Tehama Near Lassen Volcanic National Park. Bluff Falls 1981 Comment
  CAS-BOT-BC376988  Taraxacum officinale John Thomas Howell 1960-8-18 36070 Tehama Near Lassen Volcanic National Park. Bluff Falls 1981 Comment
  GH360568  Phalaris paradoxa J. T. Howell 1945-7-15 21311 Unknown Near Liberty's Comment
  CAS-BOT-BC499808  Orobanche corymbosa subsp. corymbosa John Thomas Howell 1938-8-7 14352 Mono Near Little Round Valley 2133 Comment
  SEINET7575021 Image available Carex scopulorum var. bracteosa John Thomas Howell 1934-6-14 12162 Modoc Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC293280  Ericameria suffruticosa John Thomas Howell 1969-8-27 45981 Tulare Near Mineral King in Glacial Valley below White Chief Mine 2895 Comment
  CAS-BOT-BC78352  Pinus balfouriana John Thomas Howell 1969-8-27 45979 Tulare Near Mineral King in glacial valley below White Chief Mine 2895 Comment
  RSA137314  Verbena brasiliensis J. T. Howell 1957-6-23 32697 Stanislaus Near Modesto on road to Vernalis. Comment
  CAS-BOT-BC103736  Salix exigua John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-5-17 52943 Calaveras Near Mokelumne Hill on road to West Point Comment
  RSA0097261  Spergularia bocconi J. T. Howell 1953-5-24 29019 Tuolumne Near Montezuma on road to Chinese Camp. 381 Comment
  CAS-BOT-BC182104  Lupinus argenteus var. heteranthus John Thomas Howell 1934-6-14 12181 Modoc Near North Fork of Baxter Creek, Warner Mts. 1524 Comment
  CAS-BOT-BC279642  Chaenactis xantiana John Thomas Howell 1931-3-19 5871 Fresno Near Oil Fields Comment
  CAS-BOT-BC263652  Eriogonum trichopes John Thomas Howell 1928-3-24 3494 San Diego Near Palm Wash, w. Colorado Desert Comment
  CAS-BOT-BC295587  Agnorhiza invenusta John Thomas Howell 1962-7-9 38402 Kern Near Park headquarters, Greenhorn Mountains 1798 Comment
  A382549  Salix eastwoodiae J. T. Howell 1944-8-5 19992 Unknown Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC228516  Elymus elymoides John Thomas Howell 1944-8-9 20177 Tuolumne Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC307472  Gnaphalium palustre John Thomas Howell 1944-8-5 19977 Tuolumne Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC86953  Antennaria microphylla John Thomas Howell 1944-8-9 20188 Tuolumne Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC512872  Maianthemum stellatum John Thomas Howell 1944-8-9 20189 Tuolumne Near Parsons Lodge, Tuolumne Meadows Comment
  CAS-BOT-BC375225  Stephanomeria elata John Thomas Howell 1939-8-27 15321 Marin Near Phoenix Lake Comment
  POM364710  Leptosiphon harknessii J. T. Howell 1934-6-10 11844 Lassen Near Plumas Junction Comment
  CAS-BOT-BC312218  Eurybia radulina John Thomas Howell 1946-9-15 23002 Marin Near Potrero Meadows, Mt. Tamalpais Comment
  CAS-BOT-BC445536  Damasonium californicum John Thomas Howell 1926-7-30 2161 Plumas Near Prattville 1371 Comment
  CAS-BOT-BC118708  Carex proposita John Thomas Howell 1949-7-24 25687 Tulare Near Primrose Lake 3444 Comment
  CAS-BOT-BC158849  Rubus ursinus John Thomas Howell 1938-6-19 13929 Marin Near Rattlesnake, Mt. Tamalpais Comment
  POM204469  Plectritis macrocera subsp. macrocera J. T. Howell 1933-4-22 11070 San Benito Near San Benito. Comment
Read comments
May 16 2015
  RSA878  Hemizonia fasciculata J. T. Howell 1927-8-6 596 San Diego Near San Diego 91 Comment
  CAS-BOT-BC176752  Atriplex serenana var. serenana John Thomas Howell 1963-8-5 39960 Monterey Near San Lorenzo Creek about 10 miles from King City on Lonoak Road Comment
  CAS-BOT-BC339145  Leontodon saxatilis subsp. saxatilis John Thomas Howell 1945-9-16 21480 Marin Near San Rafael Comment
  CAS-BOT-BC438727  Cistanthe monandra John Thomas Howell 1962-7-9 38410 Kern Near Shirley Meadows, Greenhorn Mountains 1981 Comment
  CAS-BOT-BC19322  Carex barbarae John Thomas Howell 1938-5-1 13780 San Mateo Near South San Francisco. Comment
  SEINET10750023  Carex subbracteata John Thomas Howell 1938-5-1 Howell 13783 San Mateo Near South San Francisco. Comment
  A378505  Paxistima myrsinites J. T. Howell 1939-8-4 15056 Unknown Near Spirit Lake, Marble Mts. Comment
  CAS-BOT-BC32557  Castilleja muscipula var. angustifolia John Thomas Howell 1939-8-4 15059 Siskiyou Near Spirit Lake, Marble Mts. 1828 Comment
  CAS-BOT-BC264135  Eriogonum vimineum John Thomas Howell 1951-6-29 27740 Plumas Near Spring Garden 1219 Comment
  CAS-BOT-BC377090  Tragopogon dubius John Thomas Howell 1951-6-29 27737 Plumas Near Spring Garden 1219 Comment
  NY821295  Solanum physalifolium J. T. Howell 1973-8-1 50146 -A Lassen Near Susanville, Diamond Range 1585 Comment
  CAS-BOT-BC111177  Trichophorum clementis John Thomas Howell 1941-8-2 16703 Madera Near Thousand Island Lake Comment
  CAS-BOT-BC22347  Carex filifolia var. filifolia John Thomas Howell 1941-7-30 16529 Madera Near Thousand Island Lake. Comment
  UCD52838  Arctostaphylos viscida subsp. mariposa John Thomas Howell 1970-9-23 47323 Kern Near Tiger Flat, Greenhorn Mountains, Kern County. 1981 Comment
  UC2015862  Carex echinata subsp. echinata John Thomas Howell 1970-9-23 47333 Kern Near Tiger Flat, east side of Sunday Peak. Greenhorn Mountains Comment
  SEINET13942634 Image available Ribes menziesii John Thomas Howell 1946-1 21613 Marin Near Tomales Comment
  RSA344  Dudleya edulis J. T. Howell 1927-8-6 583 San Diego Near Torrey Pines, just south of Del Mar 30 Comment
  RSA710  Cordylanthus rigidus subsp. setiger J. T. Howell 1927-8-6 590 San Diego Near Torrey Pines, just south of Del Mar 30 Comment
  RSA825  Corethrogyne filaginifolia J. T. Howell 1927-8-6 585 San Diego Near Torrey Pines, just south of Del Mar 30 Comment
  CAS-BOT-BC508227  Hastingsia alba John Thomas Howell 1936-8-25 12791 Trinity Near Trinity Center Comment
  CAS-BOT-BC347869  Malacothrix saxatilis var. implicata John Thomas Howell 1931-4-11 6262 Santa Barbara Near Valley Anchorage, Santa Cruz Island Comment
  CAS-BOT-BC230344  Navarretia leucocephala subsp. bakeri John Thomas Howell 1930-5-30 5212 Solano Near Vanden Comment
  RSA118025  Horkelia tenuiloba J. T. Howell 1955-6-2 30258 Sonoma Near Vine Hill School Comment
  CAS-BOT-BC267057  Alisma John Thomas Howell 1959-9-26 35061 Plumas Near Virgilia 838 Comment
  RSA711  Cordylanthus rigidus subsp. setiger J. T. Howell 1927-7-29 518 Orange Near east boundary of Rancho Santa Ana. 213 Comment
  CAS-BOT-BC57999  Equisetum arvense John Thomas Howell 1963-7-9 39652 El Dorado Near foot of Echo Summit grade, 1 mi. sw. of Meyers. 2011 Comment
  CAS-BOT-BC364354  Senecio triangularis John Thomas Howell 1923-8-1 199 Mariposa Near head of Chilnualna Falls, Yosemite Park 2286 Comment
  CAS-BOT-BC183166  Vulpia microstachys var. ciliata John Thomas Howell 1960-5-2 35236 Tuolumne Near head of Moccasin Creek Comment
  GH422078  Streptanthus farnsworthianus J. T. Howell & E. L. Farnsworth 1976-5-17 51661 Unknown Near headwaters of Lumreau Creek, about 3 miles southeast of Glennville, on Farnsworth Ranch. Greenhorn Mountains 1402 Comment
  CAS-BOT-BC165428  Clarkia unguiculata John Thomas Howell 1967-6-22 42651 Plumas Near mouth of Granite Creek. Canyon of the Feather River North Fork 609 Comment
  CAS-BOT-BC10170  Delphinium hansenii John Thomas Howell; Gordon H. True 1967-5-29 42374 Tulare Near north end of lamont Meadow on road to Chimney Meadow, Kern Plateau 1859 Comment
  CAS-BOT-BC127489  Agrostis capillaris John Thomas Howell 1945-6-12 20955 Marin Near radio station, Point Reyes Peninsula. Comment
  CAS-BOT-BC203513  Elymus glaucus subsp. glaucus John Thomas Howell 1945-6-12 20961 Marin Near radio station, Pt. Reyes Peninsula Comment
  RSA487  Cucurbita foetidissima J. T. Howell 1927-7-28 504 Orange Near ranch houses, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC492677  Calochortus splendens John Thomas Howell 1963-6-22 39526 Monterey Near summit of Mustang Grade, east of San Lorenzo Creek Comment
  CAS-BOT-BC16467  Barbarea orthoceras John Thomas Howell 1924-5-10 303 C Mariposa Near the Merced River, Wawona. 1219 Comment
  CAS-BOT-BC257421  Chorizanthe pungens var. pungens John Thomas Howell 1965-6-15 41357 Monterey Near the Monterey Airport on Salinas road about 4 miles east of Monterey Comment
  CAS-BOT-BC341973  Lessingia pectinata var. pectinata John Thomas Howell 1965-6-15 41348 Monterey Near the Monterey Airport on Salinas road about 4 miles east of Monterey Comment
  CAS-BOT-BC44857  Arctostaphylos pumila John Thomas Howell 1968-4-18 44191 b Monterey Near the airport south of Seaside Comment
  CAS-BOT-BC48152  Jamesia americana var. rosea John Thomas Howell 1942-7-31 17453 Tulare Near timberline, Mt. Kaweah Comment
  CAS-BOT-BC199081  Rhus aromatica John Thomas Howell 1964-4-27 40492 Mariposa Near top of Briceburg Grade - Sierra Nevada 548 Comment
  CAS-BOT-BC52425  Ceanothus velutinus var. velutinus John Thomas Howell 1925-6-30 1282 El Dorado Near top of Eagle Falls, Emerald Bay, Lake Tahoe Comment
  CDA2963  Atriplex suberecta J. T. Howell, G. H. True 1968-5-15 44477 Tulare Near vernal pool natural area in Valley Grassland, 4.5 miles northeast of Pixley. Comment
  CAS-BOT-BC16168  Boechera davidsonii John Thomas Howell 1941-5-30 16241 Mariposa Nevada Falls, Yosemite Valley. Comment
  CAS-BOT-BC357049  Pseudognaphalium luteoalbum John Thomas Howell 1988-9-15 s.n. Marin Nicesio [Nicasio] Reservoir Comment
  UCD99756  Eriogonum baileyi John Thomas Howell; Gordon H. True 1967-8-8 43608 Inyo Nine Mile Canyon. 1676 Comment
  JEPS38092  Tetradymia comosa John Thomas Howell 1927-7-28 Orange Nolima Canyon Rancho Santa Ana 152 Comment
  RSA405  Lupinus sparsiflorus subsp. sparsiflorus J. T. Howell 1928-2-25 843 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  UC710459  Navarretia capillaris John Thomas Howell 1943-7-14 18293 Nevada near Norden (w side Donner Pass); w side Donner Pass near Norden 2133 Comment
  CAS-BOT-BC304720  Grindelia hirsutula John Thomas Howell 1938-6-30 13941 Alameda North Berkeley Comment
  RSA46752  Castilleja applegatei subsp. pinetorum J. T. Howell 1934-6-13 12100 Modoc North Fk. of Barber Creek. Warner Mts. 1829 Comment
  CAS-BOT-BC165925  Epilobium John Thomas Howell; H. Keith Wagnon 1980-5-28 53711 Plumas North Fork Feather River Canyon 4 miles northeast of Pulga Bridge Comment
  CAS-BOT-BC57897  Equisetum X ferrissii John Thomas Howell; Gordon H. True 1967-7-9 43250 Plumas North Fork of Feather River 3 mi. sw. of Caribou. 853 Comment
  CAS-BOT-BC343280  Madia gracilis John Thomas Howell; Gordon H. True 1967-7-9 43246 Plumas North Fork of Feather River at Caribou 914 Comment
  CAS-BOT-BC332885  Tetradymia canescens John Thomas Howell; Gordon H. True 1970-6-24 46717 Tulare North Manter Creek, Big Meadow to Manter Meadow, Kern Plateau, Sierra Nevada 2438 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-BC530315  Zigadenus exaltatus John Thomas Howell; Gordon H. True 1968-5-13 44250 Tulare North Meadow Creek, Sierra Nevada 1981 Comment
  RSA26574  Phacelia distans J. T. Howell 1930-6-8 5274 Sonoma North end of Bodega Bay. Comment
  CAS-BOT-BC187301  Astragalus lentiginosus var. kernensis John Thomas Howell 1950-7-12 26756 Tulare North end of Monache Meadows 2438 Comment
  CAS-BOT-BC271918  Eriogonum spergulinum var. spergulinum John Thomas Howell 1950-7-18 27072 Tulare North end of Monache Meadows 2438 Comment
  UCD142921  Juncus tenuis John Thomas Howell; Gordon H. True 1971-7-1 48322 Placer North limits of Lincoln. 48 Comment
  CAS-BOT-BC112468  Isolepis cernua John Thomas Howell 1933-7-30 11473 Marin North of Lagunitas Creek Comment
  POM196451  Isolepis carinata J. T. Howell 1927-5-8 2369 Marin North of Lake Lagunitas. Comment
  CAS-BOT-BC324139  Lessingia hololeuca John Thomas Howell 1945-9-16 21485 Marin North of San Rafael Comment
  CAS-BOT-BC250676  Phalaris minor John Thomas Howell; Gordon H. True 1967-6-11 42554 Yolo North of Woodland near Cache Creek Comment
  CAS-BOT-BC136979  Cercocarpus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-11 54461 Mono North side of Convict Lake 2316 Comment
  CAS-BOT-BC419737  Pleiacanthus spinosus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-11 54455 Mono North side of Convict Lake 2316 Comment
  RSA38534  Carex helleri J. T. Howell 1948-7-28 25141 Tulare North side of Junction Pass. 3963 Comment
  RSA92244  Layia gaillardioides J. T. Howell 1933-4-30 11192 Marin North side of Mt. Tamalpais. Comment
  CAS-BOT-BC165097  Clarkia rubicunda John Thomas Howell 1956-6-10 31534 San Francisco North slope of Bay View Hills Comment
  CAS-BOT-BC383185  Wyethia angustifolia John Thomas Howell 1956-6-10 31532 San Francisco North slope of Bay View Hills, San Francisco Comment
  CAS-BOT-BC441337  Luzula subsessilis John Thomas Howell 1956-6-10 31552 San Francisco North slope of Bay View Hills, San Francisco Comment
  CAS-BOT-BC61735  Quercus agrifolia John Thomas Howell 1956-6-10 31538 San Francisco North slope of Bay View Hills, San Francisco Comment
  CAS-BOT-BC483164  Brodiaea terrestris subsp. terrestris John Thomas Howell 1956-6-10 31556 San Francisco North slope of Bay View Hills, San Francisco Comment
  CAS-BOT-BC220652  Monardella villosa John Thomas Howell 1956-6-10 31525 San Francisco North slope of Bayview Hills, San Francisco Comment
  CAS-BOT-BC284666  Hordeum brachyantherum subsp. brachyantherum John Thomas Howell 1956-6-5 31492 San Francisco North slope of Bayview Hills, San Francisco Comment
  CAS-BOT-BC157574  Solanum umbelliferum J. T. Howell 1960-5-3 35273 Tuolumne Northeast of Columbia on road to Vallecito Comment
  CAS-BOT-BC81783  Ephedra nevadensis John Thomas Howell 1962-5-21 37147 Kern Northeast of Lake Isabella 792 Comment
  CAS-BOT-BC171473  Oenothera dentata John Thomas Howell 1962-5-21 37157 Kern Northeast of Lake Isabella, Sierra Nevada 792 Comment
Read comments
Oct 1 2018
  PGM1449  Trifolium campestre J. T Howell 1963-5-18 Monterey Northern Monterey County, Aromas 2.5 mi S of, Open hills Comment
  UCD141873  Juncus phaeocephalus var. paniculatus John Thomas Howell; Gordon H. True 1971-7-1 48323 Placer Northern outskirts of Lincoln. 48 Comment
  RSA563318  Ivesia santolinoides J. T. Howell 1962-7-11 38558 Kern Northwest slope of Black Mountain, Greenhorn Mountains 2012 Comment
  CAS-BOT-BC305326  Helianthella castanea John Thomas Howell 1931-5-12 6475 Contra Costa Nortonville Comment
  CAS-BOT-BC95309  Bowlesia incana John Thomas Howell 1933-3-29 10901 Contra Costa Nortonville hills Comment
  CAS-BOT-BC107561  Salix lasiolepis var. lasiolepis John Thomas Howell 1965-4-26 41146 Madera 3 miles south of Oakhurst 914 Comment
  CAS-BOT-BC47159  Arctostaphylos viscida subsp. mariposa John Thomas Howell 1965-4-26 41152 Madera 3 mi. s. of Oakhurst. 914 Comment
  CAS-BOT-BC377112  Tragopogon porrifolius John Thomas Howell 1923-5-6 1 Alameda Oakland Comment
  CAS-BOT-BC260122  Nassella pulchra John Thomas Howell 1944-4-30 19418 Alameda Oakland Hills above Mills College Comment
  CAS-BOT-BC24090  Arctostaphylos bakeri John Thomas Howell 1933-4-2 10957 Sonoma 2 miles east of Occidental Comment
  CAS-BOT-BC127511  Agrostis blasdalei John Thomas Howell 1946-5-26 21954 Marin Ocean Bluff, Point Reyes Lighthouse. Comment
  CAS-BOT-BC222410  Amsinckia furcata John Thomas Howell 1931-3-18 5845 Fresno Oil Canyon Comment
  CAS-BOT-BC45288  Ancistrocarphus filagineus John Thomas Howell 1931-3-18 5848 Fresno Oil Canyon Comment
  CAS-BOT-BC304950  Grindelia hirsutula J. T. Howell 1933-7-1 11414 Ventura 2 mi. east of Ojai Comment
  CAS-BOT-BC270116  Viola pinetorum var. grisea John Thomas Howell 1950-7-22 27200 Tulare Olancha Peak 3535 Comment
  CAS-BOT-BC363670  Senecio fremontii var. occidentalis John Thomas Howell 1950-7-22 27188 Tulare Olancha Peak 3291 Comment
  CAS-BOT-BC79852  Antennaria microphylla John Thomas Howell 1950-7-22 27215 Tulare Olancha Peak 3657 Comment
  RSA244714  Frankenia salina J. T. Howell, G. H. True 1972-6-29 48919 Contra Costa On Byron Hot Springs Road SE of Byron. Comment
  CAS-BOT-BC291272  Ericameria bloomeri John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-10 54431 Amador On Carson Pass road just west of Carson Spur near Kirkwood 2407 Comment
  CAS-BOT-BC445661  Sagittaria cuneata John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-10 54423 Amador On Carson Pass road just west of Carson Spur near Kirkwood 2407 Comment
  CAS-BOT-BC253816  Panicum dichotomiflorum John Thomas Howell 1976-10-29 52264 El Dorado On Green Valley Road in Morman Island shopping center, about 4.5 miles NE of Folsom 137 Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 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-BC165554  Clarkia unguiculata John Thomas Howell 1963-5-7 39207 Monterey On San Lorenzo Creek, 6 miles northeast of King City 182 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
  CAS-BOT-BC273843  Lamarckia aurea John Thomas Howell 1963-5-7 39212 Monterey On San Lorenzo Creek, 6 miles northeast of King City 182 Comment
  CAS-BOT-BC185656  Vulpia myuros subsp. megalura John Thomas Howell 1967-3-14 42040 Monterey On San Simeon Hwy. at Pt. Sur Comment
  CAS-BOT-BC141263  Phoradendron serotinum subsp. tomentosum John Thomas Howell 1958-8-2 34218 Fresno On Zigzags of Copper Creek, Canyon Trail. Sierra Nevada 1981 Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC218566  Fraxinus velutina John Thomas Howell; Gordon H. True 1966-7-10 41600 Tulare On bank of Kern River at Roads End, Sierra Nevada 1066 Comment
  SEINET7295288 Image available Vulpia microstachys var. pauciflora John Thomas Howell, Gordon H. True 1971-1 48097 Kern On border of pinyon and Jeffrey pine, ca. 2.5 miles SE of Bald Eagle Peak 1890 Comment
  CAS-BOT-BC356163  Porophyllum gracile John Thomas Howell 1928-1-30 3316 Riverside On road from Cottonwood Springs to Pinto Basin, near s. side of Pinto Basin, Colorado Desert Comment
  CAS-BOT-BC113924  Cyperus odoratus John Thomas Howell 1974-9-19 50877 Sutter On the edge of rice fields, 1.7 mi S of Robbins on road to Knights landing. 7 Comment
  UCD140981  Carex whitneyi John Thomas Howell 20-23 Jun 1977 52407 Plumas On the peninsula of Lake Almanor. 1371 Comment
  UCD62325  Elymus glaucus John Thomas Howell 20-23 Jun 1977 52414 Plumas On the peninsula of Lake Almanor. 1371 Comment
  CAS-BOT-BC48725  Ceanothus crassifolius John Thomas Howell 1928-2-9 3325 Los Angeles On trail between Sierra Madre and Santa Anita Canyon Comment
  CAS-BOT-BC178517  Garrya flavescens John Thomas Howell 1958-8-2 34221 Fresno On zigzags of Copper Creek Canyon Trail - Sierra Nevada 1981 Comment
  CAS-BOT-BC78836  Pinus monophylla John Thomas Howell 1958-8-2 34215 Fresno On zigzags of Copper Creek Canyon trail 1981 Comment
  CAS-BOT-BC221269  Calystegia malacophylla subsp. malacophylla John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-5-20 53516 Trinity One-eye Flat, about 1.7 miles north of Carrville, Trinity River Canyon 755 Comment
  CAS-BOT-BC108534  Salix eastwoodiae John Thomas Howell 1966-6-21 41578 Inyo Onion Valley - Sierra Nevada 2804 Comment
  CAS-BOT-BC270911  Eriogonum microthecum var. ambiguum John Thomas Howell 1948-7-31 25262 Inyo Onion Valley Road 2590 Comment
  CAS-BOT-BC483267  Dichelostemma capitatum subsp. pauciflorum John Thomas Howell 1958-5-26 33716 Inyo Onion Valley Road, Sierra Nevada 2133 Comment
  CAS-BOT-BC375323  Stephanomeria exigua subsp. coronaria John Thomas Howell 1950-8-29 27439 Inyo Onion Valley road 2438 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
  CAS-BOT-BC339472  Lessingia glandulifera var. glandulifera John Thomas Howell 1927-8-16 2998 Santa Barbara 4 miles sw. of Orcutt, between Orcutt and Harris 152 Comment
  UCD92598  Setaria parviflora John Thomas Howell 1959-9-20 34678 Butte eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC185332  Calamagrostis canadensis John Thomas Howell 1940-8-4 15965 Tulare Ouzel Basin. 3048 Comment
  CAS-BOT-BC172456  Clarkia purpurea subsp. purpurea John Thomas Howell 1938-5-28 13818 Merced Pacheco Pass Comment
  CAS-BOT-BC278016  Cirsium cymosum John Thomas Howell 1938-5-28 13821 Merced Pacheco Pass Comment
  CAS-BOT-BC428222  Dudleya cymosa subsp. paniculata John Thomas Howell 1938-5-28 13819 Merced Pacheco Pass Comment
  UC106097  Sanicula graveolens Thos. Howell 1889-4-16 1364 Siskiyou Pacific Coast, Hornbrook Hornbrook; Pacific Coast, Hornbrook Comment
  CDA24129  Spergularia macrotheca J. T. Howell 1944-4-23 19397 Marin Pacific coast; Escalle. 0 Comment
  CAS-BOT-BC300936  Eriophyllum jepsonii John Thomas Howell 1937-5-20 12986 San Benito 10 miles east of Paicines Comment
  CAS-BOT-BC348973  Microseris douglasii subsp. douglasii John Thomas Howell 1937-5-20 12960 San Benito 12 miles south of Paicines Comment
  CAS-BOT-BC285430  Cirsium occidentale var. californicum John Thomas Howell 1930-5-11 4858 San Diego 4 miles east of Pala Comment
  CAS-BOT-BC268787  Eriogonum mohavense John Thomas Howell 1930-5-12 4890 Los Angeles 2 miles north of Palmdale, Mojave Desert Comment
  CAS-BOT-BC115799  Carex subfusca John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53858 Tulare Paloma Meadows, Kern Plateau 2590 Comment
  CAS-BOT-BC254845  Poa bolanderi John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-16 53850 Tulare Paloma Meadows, Kern Plateau 2590 Comment
  CAS-BOT-BC233026  Polypogon interruptus John Thomas Howell 1945-6-12 20950 Marin Papermill Creek at highway spring Comment
  CAS-BOT-BC267836  Eriogonum umbellatum var. chlorothamnus John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-13 54576 Mono 3.5 miles north of Paradise Camp at Rock Creek bridge an Old Sherwin Grade Road, Sierra Nevada 1859 Comment
  CAS-BOT-BC375078  Stephanomeria John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-13 54571 Mono 0.7 mile south of Paradise Camp on Old Sherwin Grade Road 1463 Comment
  CAS-BOT-BC47376  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51094 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC190719  Collomia linearis John Thomas Howell 1934-6-11 11961 Modoc Parker Creek, Warner Mts. 1584 Comment
  CAS-BOT-BC211385  Eriogonum sphaerocephalum var. halimioides John Thomas Howell 1934-6-11 11926 Modoc Parker Creek, Warner Mts. 1584 Comment
  CAS-BOT-BC95258  Silene douglasii var. douglasii John Thomas Howell 1934-6-11 11958 Modoc Parker Creek, Warner Mts. 1584 Comment
  GH420059  Hackelia cusickii J. T. Howell 1934-6-11 11960 Unknown Parker Creek, Warner Mts., Modoc Co. 1584 Comment
  CAS-BOT-BC180013  Phacelia heterophylla subsp. virgata John Thomas Howell 1934-6-11 11911 Modoc Parker Creek. 1584 Comment
  UC710420  Rorippa curvisiliqua John Thomas Howell 1944-8-5 19967 Tuolumne near Parsons Lodge; Tuolumne Meadows Comment
  CAS-BOT-BC245542  Penstemon gracilentus John Thomas Howell 1934-6-14 12176 Modoc Patterson Mill Road, Warner Mountains 2133 Comment
  JEPS46997  Eustoma exaltatum John Thomas Howell 1927-9-24 3115 Orange near Peralta sta. (Santa Ana River bottom, Rancho Santa Ana); Rancho Santa Ana, Santa Ana River 152 Comment
  CAS-BOT-BC111896  Rhynchospora capitellata John Thomas Howell 1945-8-14 21389 Sonoma Perry Marsh Comment
  CAS-BOT-BC352791  Lasthenia glabrata subsp. glabrata John Thomas Howell 1933-4-1 10925 Sonoma Petaluma Comment
  POM203664  Lasthenia glabrata subsp. glabrata J. T. Howell 1933-4-1 10925 Sonoma Petaluma Comment
  CAS-BOT-BC305176  Grindelia hirsutula John Thomas Howell 1930-6-8 5223 Sonoma 8 miles w. of Petaluma on Bodega Road Comment
  CAS-BOT-BC105260  Quercus kelloggii John Thomas Howell 1940-9-22 s.n. Marin Phoenix lake, Mt. Tamalpais Comment
  CAS-BOT-BC105261  Quercus kelloggii John Thomas Howell 1940-9-22 s.n. Marin Phoenix lake, Mt. Tamalpais Comment
  CAS-BOT-BC267192  Potamogeton foliosus John Thomas Howell 1946-8-23 22893 Marin Pierce Point Road, Point Reyes Peninsula Comment
  RSA44432  Agoseris aurantiaca var. aurantiaca J. T. Howell 1947-8-12 24035 Inyo Pig Pine Lakes. Fifth Lake. 3352 Comment
  UC897085  Grindelia hirsutula J. T. Howell 1932-10-21 San Mateo Pigeon Point Comment
  POM261437  Mimulus guttatus J. T. Howell 1940-4-21 15402 Contra Costa Pine Canyon, Mount Diablo Comment
  CAS-BOT-BC277797  Chaenactis santolinoides John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-7-15 53796 Kern Pine Flat and granitic ridge to southwest, Kern Plateau 2133 Comment
  CAS-BOT-BC539529  Potentilla biennis John Thomas Howell; Gordon H. True 1970-7-29 47119 Tulare Pine Flat, Kern Plateau 2194 Comment
  CAS-BOT-BC159621  Drymocallis glandulosa var. glandulosa John Thomas Howell; Gordon H. True 1971-7-13 48349 Kern Pine Flat, Kern Plateau, Sierra Nevada 2194 Comment
  CAS-BOT-BC100509  Brickellia californica John Thomas Howell 1973-11-2 50318 Ventura just north of Pine Mt. Summit on Maricopa Road 1371 Comment
  CAS-BOT-BC209276  Ribes menziesii John Thomas Howell 1944-3-26 19352 Marin Pines of Inverness Ridge n. of Mt. Vision Comment
  CAS-BOT-BC66538  Thysanocarpus curvipes John Thomas Howell 1933-4-22 11093 San Benito 6 miles from the Pinnacles on road to San Benito. Comment
  CAS-BOT-BC225616  Leptosiphon oblanceolatus John Thomas Howell 1946-7-22 22664 Fresno Pioneer Basin 3291 Comment
  CAS-BOT-BC399967  Thalictrum sparsiflorum John Thomas Howell; Gordon H. True 1966-7-13 41935 Tulare Pipe Spring on Cherry Hill Road, west side of Big Meadow. Kern Plateau 2377 Comment
  CAS-BOT-BC32523  Carex lemmonii John Thomas Howell; John William Stacey 1937-6-6 13042 Sonoma Pitkin Marsh Comment
  CAS-BOT-BC61916  Isoetes nuttallii John Thomas Howell 1937-6-6 13028 Sonoma Pitkin Marsh Comment
  UC1026382  Rhynchospora capitellata John Thomas Howell 1945-7-18 21318 Sonoma Pitkin Marsh Comment
  A346876  Crataegus douglasii J. T. Howell & J. W. Stacey 1936-7-26 12868 Unknown Pitkin Marsh, 5 miles north of Sebastopol Comment
Read comments
Oct 26 2018
  CAS-BOT-BC19897  Carex echinata subsp. phyllomanica John Thomas Howell 1945-5-30 20892 Sonoma Pitkin Marsh. Comment
  UCD140473  Carex lemmonii John Thomas Howell 1957-6-13 s.n. Sonoma Pitkin Marsh. 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
  UCD60182  Cynosurus echinatus John Thomas Howell 1943-7-28 18906 El Dorado Placerville. 579 Comment
  A346881  Sorbus californica J. T. Howell 1944-7-13 19738 Unknown Plaskett Meadows Comment
  A350975  Arctostaphylos patula J. T. Howell 1943-8-3 18949 Unknown Plaskett Meadows 1828 Comment
  CAS-BOT-BC231143  Hackelia amethystina John Thomas Howell 1943-8-3 18928 Glenn Plaskett Meadows 1828 Comment
  CAS-BOT-BC287468  Ericameria greenei John Thomas Howell 1943-8-9 19226 Glenn Plaskett Meadows 1828 Comment
  CAS-BOT-BC414458  Polygonum douglasii John Thomas Howell 1943-8-3 18967 Glenn Plaskett Meadows 1828 Comment
  UC710542  Achnatherum lemmonii John Thomas Howell 1943-8-3 18979 Glenn Plaskett Meadows 1828 Comment
  CAS-BOT-BC435602  Lithophragma glabrum John Thomas Howell 1944-7-15 19793 Glenn Plaskett Meadows Comment
  CAS-BOT-BC14344  Boechera platysperma John Thomas Howell 1943-8-5 19088 Glenn Plaskett Meadows. 1828 Comment
  CAS-BOT-BC17466  Athysanus pusillus John Thomas Howell 1944-7-13 19727 Glenn Plaskett Meadows. Comment
  POM303612  Poa secunda J. T. Howell 1944-7-14 19780 Humboldt Plaskett Meadows. Comment
Read comments
Jun 12 2012
  RSA40193  Rudbeckia occidentalis J. T. Howell 1943-8-9 19222 Glenn Plaskett Meadows. 1829 Comment
  SEINET10752407  Carex brainerdii John Thomas Howell 1944-7-14 Howell 19783 Glenn Plaskett Meadows. Comment
  CAS-BOT-BC208633  Distichlis spicata John Thomas Howell 1972-10-4 s.n. San Francisco Playland-at-the-Beach, San Francisco Comment
  CAS-BOT-BC95265  Silene menziesii John Thomas Howell 1934-6-12 12027 Modoc Plum Valley, Warner Mts. Comment
  SEINET224361  Artemisia cana John Thomas Howell 1961-9-24 Plumas Plumas County: Near Feather River bridge, SW of Beckwourth. 1487 Comment
  CAS-BOT-BC47185  Arctostaphylos uva-ursi John Thomas Howell 1934-3-3 11751 Mendocino 6 mi. s. of Point Arena. Comment
  CAS-BOT-BC279507  Chaenactis artemisiifolia John Thomas Howell 1928-4-22 3752 Ventura Point Mugu Comment
  POM215031  Plantago erecta J. T. Howell 1930-4-20 4721 Marin Point Reyes Peninsula, 5 miles from Inverness. Comment
  CAS-BOT-BC184997  Calamagrostis stricta subsp. inexpansa John Thomas Howell 1949-5-25 25338 Marin Point Reyes Peninsula. Behind dunes. Comment
  CAS-BOT-BC126429  Salix sitchensis John Thomas Howell 1944-3-26 19346 Marin Point Reyes road beyond Ledum Swamp Comment
  UC1177034 Image available Agrostis exarata John Thomas Howell 1943-7-4 18250 Marin on road to Point Reyes; Ledum Swamp Comment
  CAS-BOT-BC459642  Geum macrophyllum John Thomas Howell; Gordon H. True 1966-7-11 41659 Tulare Poison Meadow, Kern PLateau 2286 Comment
  CAS-BOT-BC239039  Symphoricarpos rotundifolius John Thomas Howell; Gordon H. True 1966-7-11 41687 Tulare Poison Meadow, Kern Plateau 2286 Comment
  CAS-BOT-BC254828  Poa bolanderi John Thomas Howell; Gordon H. True 1966-7-11 41690 Tulare Poison Meadow, Kern Plateau 2286 Comment
  CDA22661  Eriogonum temblorense J. T. Howell, E. C. Twisselmann 1969-4-14 45497 San Luis Obispo Polonio Pass. Comment
  CAS-BOT-BC439258  Claytonia exigua subsp. exigua John Thomas Howell 1931-3-23 5987 Monterey Poncho Rico Canyon, 5 miles east of San Bernardo Comment
  CAS-BOT-BC119713  Carex nervina John Thomas Howell 1944-8-18 20693 Mariposa Porcupine Flat Comment
  CAS-BOT-BC204598  Eragrostis mexicana subsp. virescens John Thomas Howell 1955-7-19 30734 Plumas Portola 1478 Comment
  SD72047  Astragalus lentiformis John Thomas Howell 1962-6-17 37702 Plumas Portola, with sagebrush under Jeffrey pines 1463 Comment
  CAS-BOT-BC58024  Equisetum John Thomas Howell 1959-9-25 35004 A Plumas 2 mi. e. of Portola. 1484 Comment
  SEINET12403814  Carex globosa J. T. Howell 1946-5-14 21843 Marin Portrero Meadow, Mt. Tamalpais. Comment
  CAS-BOT-BC20882  Carex globosa John Thomas Howell 1946-5-14 21843 Marin Potrero Meadow, Mt. Tamalpais. Comment
  CAS-BOT-BC212628  Ribes montigenum John Thomas Howell; Gordon H. True 1967-8-9 43682 Tulare Powell Meadow, about 6 miles N of Blackrock Guard Station, Kern Plateau 2712 Comment
  JEPS11845  Campanula prenanthoides John Thomas Howell 1926-7-31 2178 Plumas near Prattville 1463 Comment
  JEPS33714  Clarkia rhomboidea John Thomas Howell 1926-7-20 2081 Plumas near Prattville 1463 Comment
  JEPS40825  Symphyotrichum spathulatum J. Thomas Howell 1926-7-24 2103 Plumas near Prattville Comment
  CAS-BOT-BC186636  Danthonia californica John Thomas Howell 1937-5-23 12998 San Francisco Presidio, San Francisco Comment
  UCD119712  Amsinckia kelloggii John Thomas Howell 1933-5-5 11209 San Francisco Presidio. Comment
  CAS-BOT-BC269590  Symphoricarpos albus var. laevigatus John Thomas Howell 1963-6-22 39558 Monterey Priest Valley 685 Comment
  CAS-BOT-BC176509  Atriplex polycarpa John Thomas Howell 1976-5-19 51656 Kern Pruett Bridge on Poso Creek, on road from Glennville to Granite Station, Grenhorn Mountains 853 Comment
  CAS-BOT-BC301193  Eriophyllum lanatum var. arachnoideum John Thomas Howell 1930-4-20 4737 Marin Pt. Reyes Comment
  UC1177401  Juncus effusus subsp. pacificus John Thomas Howell 1943-7-4 18252 Marin on road to Pt. Reyes Ledum Swamp Comment
  CAS-BOT-BC27857  Blennosperma nanum var. robustum John Thomas Howell 1947-5-14 23153 Marin Pt. Reyes Peninsula above McClure Beach Comment
  UCD51755  Agrostis hendersonii John Thomas Howell 1947-4-23 23062 Marin Pt. Reyes Peninsula, Drakes Estero, west of Mt. Vision. Comment
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Nov 29 2010
  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
  UC1177251  Erysimum concinnum John Thomas Howell 1939-5-28 7379 Marin Pt. Reyes lighthouse Comment
  CAS-BOT-BC316892  Packera eurycephala var. lewisrosei John Thomas Howell 1951-6-26 27523 Butte near Pulga 365 Comment
  UC1026483  Panicum acuminatum var. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 mi w Pulga; Sierra Nevada, w of Pulga 365 Comment
  CAS-BOT-BC168099  Rhus aromatica John Thomas Howell 1928-3-10 3399 San Bernardino Quail Spring, Morongo Mts. Comment
  CAS-BOT-BC181340  Silene latifolia John Thomas Howell 1963-6-3 39385 Plumas Quincy - Sierra Nevada 1036 Comment
  CAS-BOT-BC98487  Symphyotrichum spathulatum John Thomas Howell 1966-7-29 42014 Plumas Quincy - Sierra Nevada 1036 Comment
  CAS-BOT-BC244167  Poa trivialis John Thomas Howell; Gordon H. True 1968-6-10 44557 Plumas Quincy 1036 Comment
  CAS-BOT-BC422164  Rumex californicus John Thomas Howell 1966-7-29 42017 Plumas Quincy 1036 Comment
  CAS-BOT-BC22913  Agoseris heterophylla John Thomas Howell; Gordon H. True 1967-7-11 43305 Plumas 2.5 miles from Quincy Junction on road to Mt. Hough 1249 Comment
  CAS-BOT-BC343283  Madia gracilis John Thomas Howell; Gordon H. True 1967-7-11 43284 Plumas 2 miles from Quincy Junction on road to Mt. Hough 1219 Comment
  CAS-BOT-BC419836  Polygonum parryi John Thomas Howell; Gordon H. True 1967-7-11 43290 Plumas 2.5 miles from Quincy Junction on road to Mt. Hough 1249 Comment
  CAS-BOT-BC384432  Silene coronaria John Thomas Howell 1966-7-28 42006 Plumas 5 miles north of Quincy on road to Keddie Comment
  RSA300180  Festuca rubra J. T. Howell, Gordon H. True 1969-6-23 45841 Plumas Quincy. 1037 Comment
  UCD99678  Eriogonum angulosum John Thomas Howell 1970-11-10 47564 Kern on Ranchiera Road, at Rattlesnake Creek. 670 Comment
Read comments
Oct 15 2013
  CAS-BOT-BC199145  Astragalus whitneyi var. siskiyouensis John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-5-19 53480 Trinity Rattlesnake Road 0.73 to 1.5 miles southwest of Peanut 853 Comment
  CAS-BOT-BC262690  Muhlenbergia asperifolia John Thomas Howell; Gordon H. True 1967-9-18 43783 Tulare Recreation area, north end of Lamont Meadow, Kern Plateau 1706 Comment
  CAS-BOT-BC171550  Oenothera californica John Thomas Howell; Gordon H. True 1967-9-18 43762 Tulare Recreation area, north end of Lamont Meadow, Kern Plateau, Sierra Nevada 1706 Comment
  CAS-BOT-BC241782  Eriogonum brachypodum John Thomas Howell 1927-11-12 3191 Kern Red Rock Canon [Canyon] 762 Comment
  CAS-BOT-BC202484  Euphorbia vallis-mortae John Thomas Howell 1930-5-13 4973 Kern Red Rock Canyon Comment
  CAS-BOT-BC292173  Dicoria canescens John Thomas Howell 1964-10-23 40970 Kern Red Rock Canyon Comment
  CAS-BOT-BC302074  Eriophyllum wallacei John Thomas Howell 1930-5-13 4979 Kern Red Rock Canyon Comment
  CAS-BOT-BC40545  Caulanthus lasiophyllus John Thomas Howell 1930-5-13 4953 Kern Red Rock Canyon. Comment
  RSA196470  Hemizonia arida J. T. Howell 1927-11-12 3194 Kern Red Rock Canyon. 762 Comment
  SEINET196529  Suaeda taxifolia John Thomas Howell 1948-7-2 24764 Los Angeles Redondo Beach. Comment
  CAS-BOT-BC117992  Carex rossii John Thomas Howell 1958-7-21 33707 Fresno Repack Flat. Trail from Dougherty Meadow to Simpson Meadow. 2286 Comment
  UC473466  Lessingia lemmonii var. peirsonii John Thomas Howell 1930-5-13 4984 Kern 5 mi n Ricardo Comment
  CAS-BOT-BC93983  Quercus durata John Thomas Howell 1951-6-26 27532 Plumas near Rich Bar 792 Comment
  CAS-BOT-BC58179  Phyllodoce breweri John Thomas Howell 1944-8-8 20125 Tuolumne Ridge s. of Elizabeth Lake. Comment
  SEINET10749688  Carex spectabilis John Thomas Howell 1944-8-8 Howell 20137 Tuolumne Ridge south of Elizabeth Lake, Comment
  RSA136744  Cordylanthus rigidus subsp. rigidus J. T. Howell 1955-7-7 30554 Monterey Ridge southeast of Bear Mt., Santa Lucia Mountains. 1220 Comment
  CAS-BOT-BC41194  Draba lemmonii John Thomas Howell 1944-8-8 s.n. Tulare Ridge southeast of Elizabeth Lake. Comment
  CAS-BOT-BC184802  Vulpia myuros subsp. megalura John Thomas Howell 1941-5-25 16209 Marin Rifle Camp, Mt. Tamalpais Comment
  CAS-BOT-BC269908  Eriogonum nudum var. pubiflorum John Thomas Howell; Gordon H. True 1966-7-12 41835 Kern Rim of plateau just east of Fay Creek canyon, Kern Plateau 2194 Comment
  CAS-BOT-BC51879  Ceanothus parryi John Thomas Howell 1941-4-5 16174 Sonoma Rincon Ridge Comment
  CAS-BOT-BC23886  Arctostaphylos canescens subsp. sonomensis John Thomas Howell 1937-4-11 12896 Sonoma Rincon Ridge NE of Santa Rosa Comment
  CAS-BOT-BC23890  Arctostaphylos canescens subsp. sonomensis John Thomas Howell 1937-4-11 12895 Sonoma Rincon Ridge ne of Santa Rosa Comment
  CAS-BOT-BC342214  Logfia filaginoides John Thomas Howell 1969-5-5 45574 Marin Ring Hill, Tiburon Peninsula Comment
  CAS-BOT-BC40231  Caulanthus lasiophyllus John Thomas Howell 1969-5-5 45573 Marin Ring Hill, Tiburon Peninsula. Comment
  JEPS19358  Deinandra lobbii John Thomas Howell 1933-9-17 11683 Solano 2 mi w Rio Vista Junction Comment
  CAS-BOT-BC182681  Astragalus douglasii John Thomas Howell 1928-4-5 3716 Kern Road cut, 4 miles below Keene Station, Tehachapi Pass road Comment
  CAS-BOT-BC271303  Koeleria pyramidata John Thomas Howell; Gordon H. True 1968-7-16 4416 Mono Road from Virginia Lakes to Conway Summit, Sierra Nevada 2865 Comment
  CAS-BOT-BC286550  Cirsium occidentale var. venustum John Thomas Howell 1931-5-23 6517 Monterey Road to Santa Lucia Camp, 27 miles from King City, Santa Lucia Mts. Comment
  CAS-BOT-BC13666  Ambrosia acanthicarpa John Thomas Howell; Gordon H. True 1969-9-28 46251 Tulare Road's End, Kern River Canyon 1097 Comment
  RSA88343  Plagiobothrys chorisianus var. hickmanii J. T. Howell 1953-5-7 s.n. San Benito Roadside hollow, 3 miles northwest of San Juan Comment
  CAS-BOT-BC149402  Bromus berteroanus John Thomas Howell 1956-3-25 31199 Monterey Roadside, Salinas Valley, 6.5 miles from King City on Arroyo Seco Road. Comment
  UCD141125  Cyperus odoratus John Thomas Howell 1974-9-19 50878 Sutter 1.7 mi. south of Robbins on road to Knights Landing. 7 Comment
  CAS-BOT-BC124384  Salix lasiolepis var. lasiolepis John Thomas Howell 1964-4-18 40435 Monterey Robinson Canyon, Santa Lucia Mts. Comment
  CAS-BOT-BC108576  Salix drummondiana John Thomas Howell 1949-7-28 25847 Tulare Rock Creek 3200 Comment
  CAS-BOT-BC241059  Castilleja pilosa John Thomas Howell 1949-8-7 26116 Tulare Rock Creek 3169 Comment
  CAS-BOT-BC246834  Poa leptocoma John Thomas Howell 1949-7-19 25484 Tulare Rock Creek 3200 Comment
  CAS-BOT-BC252866  Eriogonum incanum John Thomas Howell 1949-7-20 25539 Tulare Rock Creek 3444 Comment
  CAS-BOT-BC409155  Aquilegia pubescens John Thomas Howell 1949-8-8 26150 Tulare Rock Creek 3352 Comment
  CAS-BOT-BC444775  Montia chamissoi John Thomas Howell 1949-7-19 25498 Tulare Rock Creek 3200 Comment
  CAS-BOT-BC41858  Draba breweri John Thomas Howell 1946-7-16 22451 Inyo Rock Creek Lake Basin. Long Lake. 3230 Comment
  CAS-BOT-BC17986  Carex aquatilis John Thomas Howell 1946-7-28 22830 Inyo Rock Creek Lake Basin. Mack Lake. 3200 Comment
  CAS-BOT-BC34216  Carex canescens John Thomas Howell 1946-7-14 22324 Inyo Rock Creek Lake Basin. Mosquito Flat. 3139 Comment
  CAS-BOT-BC93354  Ribes cereum John Thomas Howell 1946-7-14 22346 Inyo Rock Creek Lake Basin. Mosquito Flat. 3139 Comment
  CAS-BOT-BC34097  Carex breweri John Thomas Howell 1946-7-16 22462 Inyo Rock Creek Lake Basin. West side of Morgan Pass. Comment
  CAS-BOT-BC13826  Boechera howellii John Thomas Howell 1949-7-22 25571 Tulare Rock Creek. 3169 Comment
  CAS-BOT-BC185215  Calamagrostis muiriana John Thomas Howell 1949-7-21 25568 Tulare Rock Creek. 3200 Comment
  RSA1063  Arctostaphylos hookeri subsp. montana J. T. Howell 1927-8-22 677 / 251 Marin Rock Spring Trail, Mt Tamalpais 548 Comment
  UC1176778  Claytonia perfoliata subsp. perfoliata John Thomas Howell 1946-4-13 21604 Marin near Rock Spring; Mt. Tamalpais Comment
  UCD53047  Agrostis microphylla John Thomas Howell 1962-6-10 37416 Marin Rock Springs, Mt. Tamalpais. Comment
  UC473470  Monardella villosa subsp. villosa John Thomas Howell 1930-6-15 5313 Alameda Rock summit of Little Grizzley; Berkeley Hills Comment
  CAS-BOT-BC402087  Gilia ochroleuca subsp. bizonata John Thomas Howell; Gordon H. True 1967-7-3 42873 Tulare Rockhouse Meadow, Kern Plateau 1706 Comment
  CAS-BOT-BC24955  Arctostaphylos edmundsii John Thomas Howell 1952-5-4 28302 Monterey Rocky Creek between Carmel and Pt. Sur. Comment
  CAS-BOT-BC270568  Calycadenia multiglandulosa John Thomas Howell 1946-9-15 23009 Marin Rocky Ridge Fire Trail, Mount Tamalpais Comment
  UCD45532  Quercus chrysolepis John Thomas Howell; Gordon H. True 1967-5-29 42265 Inyo Rocky gulch 1/3 mile east of head of Nine Mile Canyon, el. ca. 6000 ft., Inyo County. 1828 Comment
  CAS-BOT-BC23190  Arctostaphylos glandulosa subsp. glandulosa John Thomas Howell 1927-8-22 3038 Marin Rocky slope on Rock Spring Trail, west of West Point, Mt. Tamalpais 548 Comment
  CAS-BOT-BC176280  Thamnosma montana John Thomas Howell 1928-3-9 3389 Riverside Rocky soil of Mission Creek Wash, n. Coachella Valley, Colorado Desert 304 Comment
  CAS-BOT-BC176281  Thamnosma montana John Thomas Howell 1928-1-31 3322 Riverside Rocky soil of Mission Creek Wash, n. Coachella Valley, Colorado Desert 304 Comment
  RSA83426  Monardella villosa J. T. Howell 1930-6-15 5313 Alameda Rocky summit of Little Grizzley, Berkeley Hills Comment
  CAS-BOT-BC346374  Psorothamnus arborescens John Thomas Howell 1928-4-1 3615 Inyo Rocky wash, 1 mile below Bradbury Well, Black Mts. Comment
  CAS-BOT-BC175940  Agrostis densiflora John Thomas Howell 1946-6-30 22146 Marin Rodeo Lagoon Comment
  UC1177515  Azolla filiculoides John Thomas Howell 1946-6-30 22170 Marin Rodeo Lagoon Comment
  CAS-BOT-BC111245  Schoenoplectus californicus John Thomas Howell 1946-6-30 22168 Marin Rodes Lagoon Comment
  UCD128503  Acroptilon repens John Thomas Howell 1952-10-26 28882 Kern Rosamond. 716 Comment
  CAS-BOT-BC537131  Lemna minor John Thomas Howell 1939-8-27 15312 Marin Ross Valley Comment
  CAS-BOT-BC508336  Hastingsia alba John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-23 54145 Plumas 2.65 miles west of Round Valley Reservoir dam, Sierra Nevada 1569 Comment
  CAS-BOT-BC152777  Spiraea splendens John Thomas Howell 1946-7-15 s.n. Inyo Ruby Lake, Rock Creek Lake Basin Comment
  RSA32529  Carex deflexa var. boottii J. T. Howell 1946-7-15 22408 Inyo Ruby Lake, Rock Creek Lake Basin. 3384 Comment
  CAS-BOT-BC326849  Peucephyllum schottii John Thomas Howell 1928-4-2 3674 A Inyo 1 mile below Ryan, Furnace Creek Wash Comment
  SBBG50276  Vaccinium shastense subsp. nevadense J. T. Howell 1955-6-5 30278 Tuolumne S Fork Stanislaus River 914 Comment
  RSA18970  Polygonum spergulariiforme J. T. Howell 1937-7-21 13159 Siskiyou S Fork of Salmon river near Big Flat. 1524 Comment
  RSA0021904  Ribes menziesii J. T. Howell 1934-3-3 11737 Sonoma 8 miles S of Fort Ross. Comment
  CAS-BOT-BC86904  Quercus douglasii John Thomas Howell 1965-4-26 41158 Madera 3 miles S of Oakhurst 914 Comment
  CAS-BOT-BC297869  Eriophyllum confertiflorum John Thomas Howell 1962-7-11 38625 Kern S side of Black Mt, Greenhorn Mts 1417 Comment
  CAS-BOT-BC271301  Koeleria pyramidata John Thomas Howell 1939-5-21 s.n. Marin S. Tiburon Comment
  UCD89689  Piptatherum miliaceum John Thomas Howell 1943-8-16 19309 San Francisco SE corner Filbert and Vanness Ave. Comment
  RSA218002  Lotus heermannii J. T. Howell 1956-9-9 31854 San Francisco SE end of Lake Merced. Comment
  CAS-BOT-BC324016  Senecio flaccidus var. douglasii John Thomas Howell 1931-9-6 8031 San Benito 3 miles SE of Hollister Comment
  CAS-BOT-BC31809  Carex microptera John Thomas Howell; Gordon H. True 1970-7-30 47173 Tulare SW end of Big Meadow just E of Cherry Hill Road. 2377 Comment
  CAS-BOT-BC216471  Achnatherum occidentale subsp. californicum John Thomas Howell 1963-7-12 39874 El Dorado 3 miles SW of Twin Bridges on road to Kyburz 1676 Comment
  CAS-BOT-BC176874  Salsola gobicola John Thomas Howell 1950-7-26 27387 Inyo Sage Flat 1676 Comment
  CAS-BOT-BC150202  Holodiscus microphyllus var. microphyllus John Thomas Howell 1950-7-12 26712 Inyo Sage Flat to Olancha Pass 2743 Comment
  CAS-BOT-BC159743  Prunus andersonii John Thomas Howell 1950-7-12 26683 Inyo Sage Flat to Olancha Pass 1981 Comment
  CAS-BOT-BC162752  Chylismia claviformis subsp. claviformis John Thomas Howell 1950-7-12 26684 Inyo Sage Flat to Olancha Pass 1981 Comment
  CAS-BOT-BC217550  Galium hypotrichium subsp. inyoense John Thomas Howell 1950-7-12 26698 Inyo Sage Flat to Olancha Pass 2438 Comment
  CAS-BOT-BC217551  Galium hypotrichium subsp. inyoense John Thomas Howell 1950-7-12 26697 Inyo Sage Flat to Olancha Pass 2438 Comment
  CAS-BOT-BC512648  Eriastrum densifolium subsp. austromontanum John Thomas Howell 1950-7-12 26672 Inyo Sage Flat to Olancha Pass 1981 Comment
  CAS-BOT-BC14742  Boechera repanda John Thomas Howell 1950-7-12 26724 Inyo Sage Flat to Olancha Pass. 2743 Comment
  CAS-BOT-BC14748  Boechera repanda John Thomas Howell 1950-7-12 26732 Inyo Sage Flat to Olancha Pass. 2743 Comment
  CAS-BOT-BC171551  Oenothera californica John Thomas Howell; Gordon H. True 1967-7-4 42901 Tulare Sagebrush flat just south of Kennedy Meadows on road to Chimney Meadow, Kern Plateau, Sierra Nevada 1920 Comment
  CAS-BOT-BC44985  Ambrosia confertiflora John Thomas Howell 1963-6-22 39508 Monterey Salinas Valley, 2 mi S of King City Comment
  CAS-BOT-BC142729  Ivesia kingii John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-8-11 54476 Mono Saline flats at Whitmore Hot springs, Long Valley north of Crowley Lake 2133 Comment
  CAS-BOT-BC63461  Ceanothus palmeri John Thomas Howell 1976-10-29 52311 El Dorado Salmon Falls, road at Sweetwater Creek. 149 Comment
  CAS-BOT-BC19660  Carex brainerdii John Thomas Howell 1937-7-24 13427 Siskiyou Salmon-Trinity Alps. Caribou Basin. 2286 Comment
  RSA52105  Carex lyngbyei J. T. Howell 1949-5-22 25323 Marin Salt marsh, 1 mile south of Inverness Comment
  UC1177117  Briza minor John Thomas Howell 1942-6-7 Marin San Anselmo Canyon Comment
  UC1177409  Quercus X subconvexa John Thomas Howell 1940-5-26 15525 Marin San Anselmo Canyon Comment
  CAS-BOT-BC197151  Echinochloa crus-galli John Thomas Howell 1939-9-3 s.n. Marin San Antonio Creek Comment
  UC879576  Cuscuta subinclusa John Thomas Howell 1939-9-3 15355 Marin mouth of San Antonio Creek San Antonio Creek Comment
  CAS-BOT-BC375285  Stephanomeria exigua subsp. carotifera John Thomas Howell 1955-7-8 30596 Monterey 2 miles from San Antonio Mission on road to Santa Lucia Camp 335 Comment
  CAS-BOT-BC419845  Polygonum patulum John Thomas Howell 1945-7-8 21284 Marin San Antonio Station Comment
  JEPS33712  Epilobium brachycarpum John Thomas Howell 1926-7-11 2054 Santa Clara San Antonio Valley 914 Comment
  CAS-BOT-BC311702  Isocoma menziesii var. vernonioides John Thomas Howell 1931-9-7 8074 San Benito San Benito River Canyon 8 miles nw. of Hernandez Comment
  CAS-BOT-BC196285  Lupinus albifrons var. eminens John Thomas Howell 1931-3-29 6008 San Benito 4 miles from San Benito on road to the Pinnacles Comment
  POM225842  Lupinus albifrons var. albifrons J. T. Howell 1931-3-29 6007 San Benito 4 miles from San Benito on road to the Pinnacles Comment
  UC517490  Astragalus douglasii var. douglasii John Thomas Howell 1933-4-22 11077 San Benito near San Benito; near San Benito Comment
  A349890  Ceanothus oliganthus J. T. Howell 1927-7-10 2769 Unknown San Bernardino Mountains, below Inspiration Point on City Creek Road, San Bernardino Mts. 1524 Comment
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Jun 26 2012
  CAS-BOT-BC8540  Lupinus campbelliae var. bernardinus John Thomas Howell 1927-7-10 2745 San Bernardino San Bernardino Mts., north side of Big Bear Lake 2042 Comment
  CAS-BOT-BC305203  Grindelia hirsutula J. T. Howell 1931-6-1 6624 Orange San Clemente Comment
  GH427946  Cirsium andrewsii J. T. Howell 1958-6-3 33627 Unknown San Francisco, Fort Point Comment
  GH424765  Amsinckia J. T. Howell 1933-5-3 11206 Unknown San Francisco, Visitacion Valley Comment
  CAS-BOT-BC279041  Festuca rubra John Thomas Howell 1957-5-17 32274 San Francisco San Francisco. Bayview Hills Comment
  CAS-BOT-BC60202  Lobularia maritima John Thomas Howell 1957-5-17 32247 San Francisco San Francisco. Bayview Hills. Comment
  CAS-BOT-BC390179  Spergularia bocconi John Thomas Howell 1957-6-11 32602 San Francisco San Francisco. East side of Lone Mt. Comment
  CAS-BOT-BC414226  Polygonum aviculare subsp. depressum John Thomas Howell 1957-6-11 32609 San Francisco San Francisco. East side of Lone Mt. Comment
  CAS-BOT-BC29993  Brassica juncea John Thomas Howell 1956-6-3 31464 San Francisco San Francisco. Embarcadero and Townsend Street. Comment
  CAS-BOT-BC146097  Avena barbata John Thomas Howell 1956-4-22 31288 San Francisco San Francisco. Embarcadero at Vallejo Street. Comment
  CAS-BOT-BC12838  Lepidium pinnatifidum John Thomas Howell 1956-7-1 31634 San Francisco San Francisco. Embarcadero near Lombard Street. Comment
  CAS-BOT-BC89180  Lepidium draba John Thomas Howell 1956-4-29 31303 San Francisco San Francisco. Front and Vallejo streets. Comment
  CAS-BOT-BC156195  Bromus catharticus John Thomas Howell 1938-7-26 13985 San Francisco San Francisco. Golden Gate Park. Comment
  CAS-BOT-BC138609  Agrostis stolonifera John Thomas Howell 1956-10-28 31931 San Francisco San Francisco. Mountain Lake, Presidio. Comment
  CAS-BOT-BC391059  Stellaria graminea John Thomas Howell 1959-5-14 34595 San Francisco San Francisco. Near Strybing Arboretum, Golden Gate Park Comment
  CAS-BOT-BC55415  Hirschfeldia incana John Thomas Howell 1957-5-26 32414 San Francisco San Francisco. North base of Lone Mountain. Comment
  CAS-BOT-BC74323  Raphanus sativus John Thomas Howell 1957-5-26 32415 San Francisco San Francisco. North base of Lone Mountain. Comment
  CAS-BOT-BC279040  Festuca rubra John Thomas Howell 1957-5-26 32449 San Francisco San Francisco. North base of Lone Mt. Comment
  CAS-BOT-BC285125  Hordeum marinum subsp. gussoneanum John Thomas Howell 1957-5-26 32474 San Francisco San Francisco. North base of Lone Mt. Comment
  CAS-BOT-BC311459  Hypochaeris radicata John Thomas Howell 1957-5-26 32441 San Francisco San Francisco. North base of Lone Mt. Comment
  CAS-BOT-BC247419  Poa pratensis John Thomas Howell 1957-5-29 32525 San Francisco San Francisco. North side of Lone Mt. Comment
  CAS-BOT-BC155864  Bromus catharticus var. elatus John Thomas Howell 1957-6-11 32580 San Francisco San Francisco. North slope of Lone Mountain. Comment
  CAS-BOT-BC273705  Koeleria pyramidata John Thomas Howell 1957-6-11 32584 San Francisco San Francisco. North slope of Lone Mt. Comment
  CAS-BOT-BC127042  Agrostis exarata John Thomas Howell 1956-9-2 31834 San Francisco San Francisco. Northeast end of Lake Merced. Comment
  CAS-BOT-BC155111  Bromus hordeaceus John Thomas Howell 1983-4-16 s.n. San Francisco San Francisco. On 22nd Avenue near Fulton Street. Comment
  CAS-BOT-BC390187  Spergularia bocconi John Thomas Howell 1957-5-5 32175 San Francisco San Francisco. Sierra & 22nd Sts. Comment
  CAS-BOT-BC149397  Bromus berteroanus John Thomas Howell 1956-5-6 31340 San Francisco San Francisco. Sierra and 22nd Streets. Comment
  CAS-BOT-BC419247  Persicaria maculosa John Thomas Howell 1957-8-6 32871 San Francisco San Francisco. Strybing Arboretum, Golden Gate Park Comment
  CAS-BOT-BC343314  Madia gracilis John Thomas Howell 1957-6-16 32665 San Francisco San Francisco. Third & Davidson streets Comment
  CAS-BOT-BC250634  Phalaris minor John Thomas Howell 1957-6-16 s.n. San Francisco San Francisco. Third Street near Army St. Comment
  CAS-BOT-BC13027  Lepidium virginicum John Thomas Howell 1957-6-16 32672 San Francisco San Francisco. Third and Davidson Streets. Comment
  CAS-BOT-BC279824  Cichorium endivia John Thomas Howell 1956-9-30 31891 San Francisco San Francisco. Vallejo & Front Streets Comment
  CAS-BOT-BC445276  Portulaca oleracea John Thomas Howell 1956-7-15 31700 San Francisco San Francisco. Waterfront St. near Mission Rock Terminal Comment
  CAS-BOT-BC75436  Sisymbrium orientale John Thomas Howell 1956-7-15 s.n. San Francisco San Francisco. Waterfront Street. Comment
  LA208433  Galium nuttallii subsp. nuttallii John Thomas Howell; 1929-3-2 4101 Los Angeles San Gabriel Mountains, San Gabriel Wash, 2 mi S of Azusa Comment
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Jul 28 2014
  CAS-BOT-BC37460  Cardamine californica John Thomas Howell 1928-2-9 3328 Los Angeles San Gabriel Mountains. Floor of Santa Anita Canyon. Comment
  CAS-BOT-BC108999  Mucronea californica John Thomas Howell 1931-5-31 6619 Los Angeles San Gabriel Wash. Comment
  RSA93384  Arrhenatherum elatius J. T. Howell 1947-6-4 23224 Marin San Geronimo. Comment
  CAS-BOT-BC259303  Eriogonum lobbii John Thomas Howell 1941-7-31 16636 Madera San Joaquin Mt. Comment
  CAS-BOT-BC300131  Erigeron pygmaeus John Thomas Howell 1941-7-31 16635 Madera San Joaquin Mt. Comment
  CAS-BOT-BC269025  Eriogonum nudum var. auriculatum John Thomas Howell 1931-9-6 8026 Santa Clara 5.5 miles south of San Jose Comment
  RSA223662  Atriplex rosea J. T. Howell 1963-6-23 39621 Monterey San Lorenzo Creek, east of King City on Lonoak Road. Comment
  A402609  Lycium californicum J. T. Howell 1932-3-12 8203 A Unknown San Nicolas Island Comment
  CAS-BOT-BC211167  Lomatium insulare John Thomas Howell 1932-3-12 8207 Ventura San Nicolas Island Comment
  POM203324  Erodium cicutarium J. T. Howell 1932-3-13 8217 Ventura San Nicolas Island. Comment
  UC648303  Eryngium aristulatum var. aristulatum John Thomas Howell 1933-8-27 11619 Sonoma lands bordering San Pablo Bay s.w. Sonoma Comment
  UC1106306  Sagina apetala John Thomas Howell 1943-4-11 Marin San Rafael Comment
  CAS-BOT-BC274574  Centaurea calcitrapa John Thomas Howell 1945-9-2 21448 Marin San Rafael Comment
  CDA3304  Amaranthus deflexus J. T. Howell 1944-7-23 19852 Marin San Rafael . Comment
  CAS-BOT-BC215884  Calystegia purpurata subsp. purpurata John Thomas Howell 1945-5-6 20803 Marin San Rafael Hills Comment
  CAS-BOT-BC381923  Uropappus lindleyi John Thomas Howell 1945-5-6 20802 Marin San Rafael Hills Comment
  RSA216182  Trifolium bifidum var. decipiens J. T. Howell 45556 Marin San Rafael Hills near McNears Beach. Comment
  RSA91914  Parapholis incurva J. T. Howell 1945-5-6 20816 Marin San Rafael. Comment
  UCD97437  Amaranthus deflexus John Thomas Howell 1944-7-23 19852 Marin San Rafael. Comment
  RSA51216  Eriophyllum staechadifolium J. T. Howell 1947-7-15 23354 Monterey San Simeon Highway and Castro Canyon Comment
  CAS-BOT-BC305687  Helianthus gracilentus John Thomas Howell 1931-6-6 6668 Los Angeles 17 miles s. of Sandberg's Summit, Ridge Route Comment
  CAS-BOT-BC86925  Quercus douglasii John Thomas Howell 1930-10-24 5665 Monterey Sandstone hills, 2.3 miles E of the Indians, Santa Lucia Mts. Comment
  CAS-BOT-BC114127  Cyperus squarrosus John Thomas Howell 1959-9-25 34987 Plumas Sandy beach of Feather River, Portola. 1478 Comment
  CAS-BOT-BC537988  Horkelia tridentata var. tridentata John Thomas Howell 1923-7-30 184 Mariposa Sandy flat of Wawona Meadow 1219 Comment
  SD149123  Gilia brecciarum subsp. neglecta John Thomas Howell, Gordon H. True 1971-6-16 47876 Kern Sandy flats along Kelso Creek, 7.0 miles south of Weldon on road to Kelso Valley. 914 Comment
  CAS-BOT-BC249944  Eriogonum fasciculatum var. foliolosum John Thomas Howell 1927-7-24 2835 Orange Santa Ana Canyon 152 Comment
  CAS-BOT-BC56041  Rhamnus ilicifolia John Thomas Howell 1927-6-17 2548 Orange hills on north side of Santa Ana Canyon 152 Comment
  GH402415  Eustoma exaltatum J. T. Howell 1927-9-24 3115 Unknown Santa Ana Canyon 152 Comment
  JEPS27447  Sarcostemma cynanchoides subsp. hartwegii John Thomas Howell 1927-7-24 2819 Orange Santa Ana Canyon, Rancho Santa Ana 152 Comment
  RSA1314  Calochortus weedii J. T. Howell 1928-7-8 1045 Riverside Santa Ana Mountains above Glen Ivy 1067 Comment
  UC909677  Lepechinia cardiophylla John Thomas Howell 1927-6-26 2606 Orange n Santa Ana Mountains, Claymine Canyon Claymine Canyon; Santa Ana Mountains, Claymine Canyon 609 Comment
  RSA488  Marah macrocarpa J. T. Howell 1927-6-6 45 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA521  Conium maculatum J. T. Howell 1927-7-19 447 Orange Santa Ana River bottom, Rancho Santa Ana. 152 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-BC75038  Sisymbrium altissimum John Thomas Howell 1927-7-24 2821 Orange Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  RSA1304  Oenothera elata subsp. hirsutissima J. T. Howell 1928-9-6 1205 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  RSA970  Xanthium strumarium J. T. Howell 1927-7-27 495 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC216890  Achnatherum occidentale John Thomas Howell 1947-7-24 23589 San Bernardino Santa Ana River, San Bernardino Mountains 1920 Comment
  CAS-BOT-BC216891  Achnatherum occidentale John Thomas Howell 1947-7-24 23588 San Bernardino Santa Ana River, San Bernardino Mountains 1920 Comment
  SEINET10603898  Stipa lettermanii John Thomas Howell 1947-7-24 Howell 23591 San Bernardino Santa Ana River; San Bernardino Mts. 1920 Comment
  CAS-BOT-BC349196  Microseris elegans John Thomas Howell 1931-4-13 6339 Santa Barbara Santa Cruz Island at west end Comment
  CAS-BOT-BC223182  Galium nuttallii subsp. insulare John Thomas Howell 1931-4-13 6322 Santa Barbara Santa Cruz Island near west end Comment
  CAS-BOT-BC109651  Dudleya greenei John Thomas Howell 1931-4-16 6408 Santa Barbara Santa Cruz Island. Pelican Bay. Comment
  POM203446  Eriophyllum staechadifolium J. T. Howell 1931-4-13 6324 Santa Barbara Santa Cruz Island. near west end. Comment
  CAS-BOT-BC116584  Carex subfusca John Thomas Howell 1955-7-8 30629 Monterey Santa Lucia Camp, Arroyo Seco River. 609 Comment
  CAS-BOT-BC310198  Hesperevax sparsiflora var. sparsiflora John Thomas Howell 1963-5-6 39129 Monterey Santa Lucia Mountains. 3 miles n. of Jolon 335 Comment
  CAS-BOT-BC89784  Lepidium latipes John Thomas Howell 1963-5-6 39135 Monterey Santa Lucia Mountains. 3 miles north of Jolon. 335 Comment
  CAS-BOT-BC439260  Claytonia exigua subsp. exigua John Thomas Howell 1957-4-28 32057 Monterey Santa Lucia Mountains. Canyon near Hastings Reservation 594 Comment
  CAS-BOT-BC286551  Cirsium occidentale var. venustum John Thomas Howell 1953-6-15 29097 Monterey Santa Lucia Mountains. East of Jamesburg - Greenfield summit Comment
  CAS-BOT-BC259807  Nassella cernua John Thomas Howell 1963-5-6 39162 Monterey Santa Lucia Mountains. Jolon 298 Comment
  CAS-BOT-BC76451  Eschscholzia lemmonii John Thomas Howell 1963-5-6 39118 Monterey Santa Lucia Mountains. Jolon Grade. 365 Comment
  CAS-BOT-BC12919  Lepidium strictum John Thomas Howell 1963-5-6 39163 Monterey Santa Lucia Mountains. Jolon. 298 Comment
  CAS-BOT-BC287233  Cotula australis John Thomas Howell 1960-3-22 35143 San Luis Obispo Santa Lucia Mts. Cuesta Park, San Luis Obispo Comment
  RSA88338  Arctostaphylos densiflora J. T. Howell 1933-4-2 10948 Sonoma 8 miles west of Santa Rosa Comment
  CAS-BOT-BC87234  Streptanthus glandulosus subsp. glandulosus John Thomas Howell 1931-4-4 6178 Sonoma Santa Rosa Canyon, north of Mount Hood. Comment
  CAS-BOT-BC66951  Thysanocarpus laciniatus John Thomas Howell 1934-3-27 11802 Sonoma Santa Rosa Creek Canyon. Comment
  CAS-BOT-BC50007  Ceanothus gloriosus John Thomas Howell 1935-5-5 12620 Sonoma 6 miles from Santa Rosa on road to Sonoma Comment
  RSA578  Navarretia hamata subsp. parviloba J. T. Howell 1928-6-30 1017 Ventura Santa Susana Pass. Comment
  CAS-BOT-BC250850  Phleum pratense John Thomas Howell 1944-6-25 19645 Marin Santa Venetia Comment
  CAS-BOT-BC390817  Spergularia marina John Thomas Howell 1944-7-23 19848 Marin Santa Venetia Comment
  RSA635  Allophyllum glutinosum J. T. Howell 1928-7-8 1057 Riverside Santiago Peak Trail above Glen Ivy. 915 Comment
  CAS-BOT-BC145044  Phacelia keckii John Thomas Howell 1931-5-30 6611 Riverside Santiago Peak, Santa Ana Mts. 1219 Comment
  CAS-BOT-BC273599  Koeleria pyramidata John Thomas Howell 1945-6-20 21094 Lake Sawmill Flat, Bartlett Mountain 1219 Comment
  CAS-BOT-BC363001  Rigiopappus leptocladus John Thomas Howell 1945-6-21 21137 Lake Sawmill Flat, Bartlett Mountain 1219 Comment
  RSA32500  Arctostaphylos stanfordiana J. T. Howell 1945-6-20 21087 Lake Sawmill Flat, Bartlett Mountain. 1220 Comment
  RSA32528  Clarkia purpurea subsp. quadrivulnera J. T. Howell 1945-6-19 21032 Lake Sawmill Flat, Bartlett Mountain. 1220 Comment
  CAS-BOT-BC461048  Allium amplectens John Thomas Howell 1945-6-19 21075 Lake Sawmill Flat, Bartlett Moutain 1219 Comment
  POM230321  Epilobium siskiyouense J. T. Howell 1937-7-29 s.n. Siskiyou Scott Mountain between Trinity and Siskiyou counties. Comment
  CAS-BOT-BC18397  Carex John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-5-20 53548 Trinity Scott Mountain summit on road from Carrville to Callahan. 1645 Comment
  JEPS4545  Orthocarpus cuspidatus subsp. copelandii John Thomas Howell 1937-7-29 13653 Siskiyou Scott Mountain; between Trinity and Siskiyou Counties Comment
  UC880423  Phlox douglasii subsp. rigida John Thomas Howell 1937-7-29 13663 Siskiyou Scott Mt., between Trinity and Siskiyou counties Scott Mt. Comment
  CAS-BOT-BC316020  Hieracium nudicaule John Thomas Howell 1934-7-4 12389 Siskiyou Se. corner of Siskiyou Co. Comment
  CAS-BOT-BC263184  Eriogonum marifolium var. cupulatum John Thomas Howell 1934-7-4 12395 Siskiyou Se. corner of Siskiyou Co. Comment
  CAS-BOT-BC163151  Clarkia imbricata John Thomas Howell 1937-7-4 13084 Sonoma 5 miles north of Sebastopol Comment
  SEINET10609962  Glyceria erecta John Thomas Howell 1945-9-25 Howell 21506 Tuolumne Second lake E of Younf Lake. 3078 Comment
  CAS-BOT-BC181157  Minuartia rubella John Thomas Howell 1947-8-8 23911 Inyo Second to Third Lake, Big Pine Lakes 3048 Comment
  RSA44151  Calamagrostis stricta subsp. inexpansa J. T. Howell 1947-8-8 23929 Inyo Second to Third Lake, Big Pine Lakes. 3293 Comment
  GH364902  Hesperolinon bicarpellatum J. T. Howell 1945-6-22 21229 Unknown Serpentine hill, 3.8 miles north of Middletown Comment
  SD72065  Rumex salicifolius f. ecallosus John Thomas Howell 1956-7-1 31665 San Francisco Serpentine hills, Hunters Pt. Comment
  CAS-BOT-BC343089  Madia gracilis John Thomas Howell 1945-6-3 20935 Marin Shell Beach 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-BC244065  Eriogonum brachyanthum John Thomas Howell 1938-8-7 14366 Mono Sherwin Grade Comment
  CAS-BOT-BC263115  Eriogonum maculatum John Thomas Howell 1938-8-7 14368 Mono Sherwin Grade Comment
  CAS-BOT-BC260099  Nassella pulchra John Thomas Howell 1954-5-16 29612 El Dorado Shingle Springs 426 Comment
  CAS-BOT-BC430955  Lithophragma bolanderi John Thomas Howell 1954-5-16 29595 El Dorado 4 miles west of Shingle Springs Comment
  CAS-BOT-BC404099  Urtica dioica subsp. holosericea John Thomas Howell 1962-7-11 38618 Kern Shirley Meadows. Greenhorn Mountains 2011 Comment
  CAS-BOT-BC487802  Calochortus coeruleus John Thomas Howell 1962-7-10 38508 Kern Shirley Meadows. Greenhorn Mountains 2011 Comment
  CAS-BOT-BC113648  Eleocharis acicularis var. occidentalis John Thomas Howell 1962-7-11 38601 Kern Shirley meadows, Greenhorn Mountains. 2011 Comment
  CAS-BOT-BC31113  Carex lemmonii John Thomas Howell 1962-7-11 38603 Kern Shirley meadows. Greenhorn Mountains. 2011 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-BC109399  Rumex paucifolius John Thomas Howell 1949-7-25 25745 Tulare Siberian Pass Creek. 3352 Comment
  CAS-BOT-BC184493  Vulpia microstachys var. pauciflora John Thomas Howell 1956-5-6 31339 San Francisco Sierra & 22nd Sts. Comment
  CAS-BOT-BC184490  Vulpia microstachys var. pauciflora John Thomas Howell 1956-5-6 31347 San Francisco Sierra & 22nd Sts., San Francisco Comment
  CAS-BOT-BC53193  Ceanothus parvifolius John Thomas Howell 1960-6-5 35299 Fresno Sierra Nevada - 1.2 mi. n. of Cherry Gap 1981 Comment
  CAS-BOT-BC59566  Rhamnus John Thomas Howell 1976-7-14 51824 Plumas Sierra Nevada - American Valley near Quincy on road to Quincy Junction 1036 Comment
  CAS-BOT-BC47968  Ceanothus John Thomas Howell 1976-8-1 52045 El Dorado Sierra Nevada - Cameron Park about 3 miles west of Shingle Springs 426 Comment
  CAS-BOT-BC50733  Ceanothus integerrimus John Thomas Howell 1961-6-21 36596 Plumas Sierra Nevada - Greenville 1097 Comment
  CAS-BOT-BC77077  Pentagramma triangularis subsp. triangularis John Thomas Howell 1967-6-23 42730 Plumas Sierra Nevada - Lewisia Rock 3.5 miles SW of Belden, Feather River Canyon 609 Comment
  CAS-BOT-BC77176  Pellaea mucronata var. californica John Thomas Howell 1958-7-23 33791 Fresno Sierra Nevada - Simpson Meadow, Middle Fork of the Kings River. 1828 Comment
  CAS-BOT-BC67675  Pellaea breweri John Thomas Howell 1950-7-16 26985 Tulare Sierra Nevada - South Fork of Kern River, gorge north of Bakeoven Meadows 2499 Comment
  CAS-BOT-BC53108  Ceanothus pinetorum John Thomas Howell 1950-7-26 27362 Inyo Sierra Nevada - Summit Creek, east of Olancha Pass 2773 Comment
  CAS-BOT-BC52757  Ceanothus vestitus John Thomas Howell 1958-5-24 33298 Inyo Sierra Nevada - Whitney Portal Road 1981 Comment
  CAS-BOT-BC76578  Pteridium aquilinum John Thomas Howell 1969-9-12 46097 El Dorado Sierra Nevada - near Riverton 1005 Comment
  CAS-BOT-BC93886  Artemisia dracunculus John Thomas Howell 1976-8-13 52250 Mariposa Sierra Nevada - near Yosemite Lodge, Yosemite Valley 1219 Comment
  UCR87998  Carex tompkinsii J. T. Howell 1972-4-25 48719 Mariposa Sierra Nevada Mountains, Merced River Canyon, 1 mi from Arch Rock on the road to Cascade Falls. 915 Comment
  UCR77877  Lupinus excubitus var. austromontanus J. T. Howell, G. H. True 1971-6-16 47951 Kern Sierra Nevada Mtns, 4.5 mi. east of Claraville on road to Kelso Valley. 1829 Comment
  UCR95798  Phacelia platyloba J. T. Howell, R. C. Barneby 1954-5-9 29297 Fresno Sierra Nevada Mtns, Dunlap 564 Comment
  UCR88066  Lupinus formosus var. robustus J. T. Howell 1954-5-10 29375 Madera Sierra Nevada Mtns, Four mi. south of North Fork. 671 Comment
  UCR84523  Arctostaphylos truei J. T. Howell 1976-7-14 51817 Butte Sierra Nevada Mtns, just NE of Pulga Bridge 418 Comment
Read comments
Oct 10 2010
  UCR256097  Lupinus lyallii J. T. Howell 1977-8-3 52528 Alpine Sierra Nevada Mtns., just north of Ebbetts Pass 2683 Comment
  UCR79417  Lupinus polyphyllus subsp. superbus J. T. Howell, G. H. True, Margaret Williams 1973-6-28 49412 Lassen Sierra Nevada Mtns/ Modoc Plateau, Elysian Valley, west of Janesville 1326 Comment
  SEINET10380092  Carex brainerdii John Thomas Howell 1962-7-10 38439 Kern Sierra Nevada, 1.5 miles south of Summit. Greenhorn Mountains. 1951 Comment
  CAS-BOT-BC471344  Chenopodium hians John Thomas Howell; Gordon H. True 1969-9-30 46393 A Tulare Sierra Nevada, Kern Plateau. Poison Meadow Comment
  CAS-BOT-BC436612  Luzula cascadensis John Thomas Howell; Gordon H. True 1970-7-30 47175 Tulare Sierra Nevada, Kern Plateau: SW end of Big Meadow just east of Cherry Hil Road 2377 Comment
  SEINET6166089  Marsilea vestita subsp. vestita J. T. Howell 1962-9-21 38683 Kern Sierra Nevada, Kern River Canyon 427 Comment
  UCD100062  Polygonum aviculare subsp. depressum John Thomas Howell 1958-8-10 34266 Madera Sierra Nevada, Millow Meadow. 2103 Comment
  CAS-BOT-BC527415  Veratrum californicum John Thomas Howell 1958-7-24 33903 Fresno Sierra Nevada, Simpson Meadowm Middle Fork of the Kings River 1828 Comment
  UCR88032  Veronica peregrina subsp. xalapensis J. T. Howell, G. H. True 1970-7-28 46988 Tulare Sierra Nevada, West side of Big Meadow, just south of Pipespring, the Kern Plateau 2378 Comment
  CAS-BOT-BC40547  Caulanthus lasiophyllus John Thomas Howell; Gordon H. True 1971-6-17 48025 Kern Sierra Nevada. 0.5 mile east of Bodfish Gap. 1219 Comment
  CAS-BOT-BC61349  Streptanthus cordatus var. piutensis John Thomas Howell; Gordon H. True 1971-6-17 48039 Kern Sierra Nevada. 1 mile east of Bodfish Gap. 1310 Comment
  CAS-BOT-BC127094  Agrostis exarata John Thomas Howell 1959-9-25 35005 Plumas Sierra Nevada. 2 miles east of Portola. 1484 Comment
  CAS-BOT-BC330953  Acer glabrum var. glabrum John Thomas Howell; Gordon H. True 1969-6-23 45802 Plumas Sierra Nevada. 2.6 mi N of Middle Fork of Feather River at Nelson Point 1310 Comment
  CAS-BOT-BC155274  Bromus hordeaceus John Thomas Howell 1954-5-9 s.n. Tulare Sierra Nevada. 4.5 miles southwest of Badger. 609 Comment
  CAS-BOT-BC127391  Agrostis exarata John Thomas Howell 1951-8-21 28255 Sierra Sierra Nevada. 5 miles from Calpine on road to Blairsden. 1524 Comment
  CAS-BOT-BC20585  Carex douglasii John Thomas Howell 1962-6-19 37853 Plumas Sierra Nevada. Alkaline flat, 5.5 miles E of Beckwourth. 1493 Comment
  CAS-BOT-BC109419  Rumex venosus John Thomas Howell 1978-4-19 52865 Lassen Sierra Nevada. Along Highway 395 between Doyle and Milford. Comment
  CAS-BOT-BC43306  Descurainia pinnata subsp. glabra John Thomas Howell 1958-5-28 33603 Inyo Sierra Nevada. Bishop Creek. 1524 Comment
  CAS-BOT-BC12796  Lepidium perfoliatum John Thomas Howell 1958-5-29 33623 Inyo Sierra Nevada. Bishop. 1264 Comment
  CAS-BOT-BC162144  Bromus orcuttianus John Thomas Howell 1968-6-11 2368 Plumas Sierra Nevada. Butterfly Botanical Area. Confluence of Spanish Creek & Butterfly Creeek. 883 Comment
  CAS-BOT-BC155797  Bromus diandrus John Thomas Howell 1967-6-23 s.n. Plumas Sierra Nevada. Butterfly Valley. 1036 Comment
  UCD97165  Amaranthus albus John Thomas Howell 1958-7-1 33646 Fresno Sierra Nevada. Cedar Grove, S. Fk. Kings River. 1402 Comment
  CAS-BOT-BC190272  Cynodon dactylon John Thomas Howell 1970-11-8 47514 Kern Sierra Nevada. Desiccated bed of Lake Isabella, 6 miles from South Fork Kern River bridge on road from Weldon to Kernville. 792 Comment
  CAS-BOT-BC18364  Carex John Thomas Howell; Gordon H. True 1973-7-31 50083 Plumas Sierra Nevada. Diamond Range. Summit ridge of Thompson Peak. 2194 Comment
  CAS-BOT-BC139714  Agrostis gigantea John Thomas Howell 1977-8-1 52451 Calaveras Sierra Nevada. Dorrington. 1463 Comment
  CAS-BOT-BC149502  Bromus carinatus var. carinatus John Thomas Howell 1977-8-3 52573 Alpine Sierra Nevada. Ebbetts Pass Road, 4.5 miles east of Lake Alpine. Comment
  CAS-BOT-BC91169  Umbellularia californica John Thomas Howell 1972-4-24 48692 Mariposa Sierra Nevada. El Portal. 640 Comment
  CAS-BOT-BC149549  Bromus carinatus var. carinatus John Thomas Howell 1961-9-22 36754 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. Comment
  CAS-BOT-BC138114  Alopecurus aequalis var. aequalis John Thomas Howell 1961-9-25 36952 Plumas Sierra Nevada. Feather River bed, Portola. 1478 Comment
  CAS-BOT-BC138739  Agrostis scabra John Thomas Howell 1967-11-5 44161 Kern Sierra Nevada. Flood bed of the Kern River 3 miles above Kernville. 845 Comment
  CAS-BOT-BC162348  Bromus madritensis John Thomas Howell; Gordon H. True 1971-6-15 47813 Kern Sierra Nevada. Flying Dutchman Creek canyon on Havilah Mount Breckenridge Road. 1249 Comment
  CAS-BOT-BC109596  Dudleya cymosa John Thomas Howell 1954-5-17 29727 El Dorado Sierra Nevada. Garden Valley. 609 Comment
  CAS-BOT-BC109483  Dudleya John Thomas Howell 1976-5-17 51681 Kern Sierra Nevada. Greenhorn Mnts. Near headquarters of Lumreau Creek, about 3 miles SE of Glennville, on Farnsworth Ranch. 1402 Comment
  CAS-BOT-BC18283  Carex John Thomas Howell 1962-7-10 38446 Kern Sierra Nevada. Greenhorn Mountains, 1.5 miles south of Summit. 1950 Comment
  CAS-BOT-BC144189  Bromus arenarius John Thomas Howell 1962-7-8 38324 Kern Sierra Nevada. Greenhorn Mountains. 1.5 mile southeast of Summit. 1524 Comment
  CAS-BOT-BC139301  Agrostis idahoensis John Thomas Howell 1962-9-22 38773 Kern Sierra Nevada. Greenhorn Mountains. Near Shirley Meadows. 1950 Comment
  CAS-BOT-BC127272  Agrostis exarata John Thomas Howell 1962-7-10 38505 Kern Sierra Nevada. Greenhorn Mountains. Shirley Meadow. 2011 Comment
  UCD97898  Chenopodium berlandieri var. zschackei John Thomas Howell 1962-9-23 38826 Kern Sierra Nevada. Greenhorn Summit. Greenhorn Mountains. 1859 Comment
  CAS-BOT-BC55406  Hirschfeldia incana John Thomas Howell 1951-8-19 28189 Plumas Sierra Nevada. Greenville. 1097 Comment
  CAS-BOT-BC21245  Carex fracta John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-26 53091 Calaveras Sierra Nevada. Headwaters of Little Mokelumne River at Sacramento Girl Scout Camp (Camp Menzies). 1554 Comment
  CAS-BOT-BC139286  Agrostis idahoensis John Thomas Howell; Gordon H. True 1968-7-19 4449 Madera Sierra Nevada. Intersection Minaret-Agnew & Post Pile roads. 2316 Comment
  CAS-BOT-BC61331  Streptanthus cordatus var. cordatus John Thomas Howell; Gordon H. True 1967-5-30 42496 Tulare Sierra Nevada. Kern Plateau. About 1.5 mile northeast of Long Valley on road to Chimney Meadow. 2103 Comment
  CAS-BOT-BC108819  Ribes cereum John Thomas Howell; Gordon H. True 1968-5-13 44299 Tulare Sierra Nevada. Kern Plateau. Cherry Hill Road, Poison Meadow Creek Canyon. 2225 Comment
  CAS-BOT-BC127565  Agropyron cristatum John Thomas Howell; Gordon H. True 1970-7-27 46939 Tulare Sierra Nevada. Kern Plateau. Forest border of Big Meadow, on the east side of Joughin Camp. Near corral. 2377 Comment
  CAS-BOT-BC108821  Ribes cereum John Thomas Howell; Gordon H. True 1970-6-23 46627 Tulare Sierra Nevada. Kern Plateau. Northeast end of Big Meadow. 2377 Comment
  CAS-BOT-BC55137  Erysimum perenne John Thomas Howell; Gordon H. True 1970-7-29 47095 Tulare Sierra Nevada. Kern Plateau. On road from Cannell Meadow to Pine Flat. 2286 Comment
  CAS-BOT-BC139182  Agrostis idahoensis John Thomas Howell; Gordon H. True 1966-7-11 41658 Tulare Sierra Nevada. Kern Plateau. Poison Meadow. 2286 Comment
  CAS-BOT-BC108823  Ribes cereum John Thomas Howell; Gordon H. True 1971-7-14 48487 Tulare Sierra Nevada. Kern Plateau. Round Meadow (about 3 miles northwest of Sirretta Peak). 2621 Comment
  CAS-BOT-BC108820  Ribes cereum John Thomas Howell; Gordon H. True 1969-10-1 46436 Tulare Sierra Nevada. Kern Plateau. Snake Spring, about 2.5 miles north of Poison Meadow. 2499 Comment
  CAS-BOT-BC74751  Rorippa curvisiliqua John Thomas Howell; Gordon H. True 1967-7-4 42949 Tulare Sierra Nevada. Kern Plateau. Troy Meadow. 2377 Comment
  CAS-BOT-BC138900  Agrostis pallens John Thomas Howell; Gordon H. True 1970-7-28 47009 Tulare Sierra Nevada. Kern Plateau. West side of Big Meadow just south of Pipe Spring. 2377 Comment
  CAS-BOT-BC155638  Bromus diandrus John Thomas Howell 1958-5-22 33122 Tulare Sierra Nevada. Kern River Canyon 6 miles south of Roads End P.O. 944 Comment
  UCD141004  Cyperus laevigatus John Thomas Howell 1962-7-12 38637 Kern Sierra Nevada. Kernville. 807 Comment
  CAS-BOT-BC148873  Bromus carinatus var. marginatus John Thomas Howell 1958-8-2 34232 Fresno Sierra Nevada. Kings River Canyon near Copper Creek. 1524 Comment
  CAS-BOT-BC38092  Cardamine pachystigma John Thomas Howell; Gordon H. True 1967-5-9 42217 Plumas Sierra Nevada. Lewisia Rock, 3.5 miles southwest of Belden, Feather River Canyon. 609 Comment
  CAS-BOT-BC20630  Carex douglasii John Thomas Howell 1949-7-17 25434 Inyo Sierra Nevada. Little Cottonwood Creek. 2987 Comment
  CAS-BOT-BC149550  Bromus carinatus var. carinatus John Thomas Howell 1963-7-10 39721 Alpine Sierra Nevada. Markleeville. 1676 Comment
  UCD56025  Arrhenatherum elatius John Thomas Howell 1963-7-10 39724 Alpine Sierra Nevada. Markleeville. 1676 Comment
  CAS-BOT-BC88811  Lepidium campestre John Thomas Howell 1964-8-10 40912 Alpine Sierra Nevada. Markleeville. 1676 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
  CAS-BOT-BC16316  Boechera howellii John Thomas Howell 1958-8-12 34309 Madera Sierra Nevada. Near Isberg Lake. 2987 Comment
  CAS-BOT-BC42044  Draba albertina John Thomas Howell 1969-8-27 45988 Tulare Sierra Nevada. Near Mineral King in Glacial Valley below White Chief Mine. 2895 Comment
  CAS-BOT-BC21257  Carex multicostata John Thomas Howell 1963-7-9 39654 El Dorado Sierra Nevada. Near foot of Echo Summit grade, 1 mile southwest of Meyers. 2011 Comment
  CAS-BOT-BC60635  Phoenicaulis cheiranthoides John Thomas Howell 1958-5-27 33481 Inyo Sierra Nevada. North Fork of Bishop Creek. 2590 Comment
  CAS-BOT-BC17943  Carex angustata John Thomas Howell; Gordon H. True 1967-7-9 43242 Plumas Sierra Nevada. North Fork of Feather River at Belden. 685 Comment
  UCD102795  Vitis californica John Thomas Howell 1961-9-22 36761 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. Comment
  CAS-BOT-BC148716  Bromus carinatus var. marginatus John Thomas Howell 1977-6-20 52412 Plumas Sierra Nevada. On the peninsula of Lake Almanor. 1371 Comment
  CAS-BOT-BC19981  Carex feta John Thomas Howell; R. C. Barneby 1954-5-11 29400 Madera Sierra Nevada. Peckinpah Creek. 914 Comment
  CAS-BOT-BC155055  Bromus hordeaceus John Thomas Howell; Gordon H. True 1968-6-10 44543 Plumas Sierra Nevada. Quincy. 1036 Comment
  CAS-BOT-BC162013  Bromus racemosus John Thomas Howell; Gordon H. True 1968-6-10 44543 A Plumas Sierra Nevada. Quincy. 1036 Comment
  CAS-BOT-BC60092  Lepidium virginicum var. menziesii John Thomas Howell 1966-7-29 42024 Plumas Sierra Nevada. Quincy. 1036 Comment
  CAS-BOT-BC161636  Bromus sterilis John Thomas Howell; Gordon H. True 1968-6-10 44556 Plumas Sierra Nevada. Quincy. Along railroad. 1036 Comment
  CAS-BOT-BC16360  Barbarea orthoceras John Thomas Howell 1977-8-2 52473 Alpine Sierra Nevada. Silver Creek, about 1 mile northeast of Lake Alpine on Ebbetts Pass Road. 2346 Comment
  CAS-BOT-BC87494  Streptanthus tortuosus John Thomas Howell 1977-8-2 52469 Alpine Sierra Nevada. Silver Creek, about 1 mile northeast of Lake Alpine on Ebbetts Pass Road. 2346 Comment
  CAS-BOT-BC54995  Erysimum perenne John Thomas Howell 1958-7-24 33880 Fresno Sierra Nevada. Simpson Meadow, Middle Fork of the Kings River. 1828 Comment
  CAS-BOT-BC138079  Alopecurus aequalis var. aequalis John Thomas Howell 1950-7-14 26870 Tulare Sierra Nevada. South Fork of Kern River. Bakeoven Meadows. 2468 Comment
  CAS-BOT-BC156152  Bromus catharticus John Thomas Howell 1950-7-13 26777 Tulare Sierra Nevada. South Fork of the Kern River. Bakeoven Meadows. 2468 Comment
  NY664621  Bromus tectorum J. T. Howell 1969-5-13 75687 -A Kern Sierra Nevada. Spanish Needle Creek road to Lamont Meadow 1463.0 Comment
  CAS-BOT-BC110607  Limnanthes John Thomas Howell 1976-4-1 51529 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 304 Comment
  CAS-BOT-BC155434  Bromus hordeaceus John Thomas Howell 1958-7-27 34034 Fresno Sierra Nevada. Tehipite Valley, Middle Fork of the Kings River. 1280 Comment
  CAS-BOT-BC110566  Eschscholzia John Thomas Howell; R. C. Barneby 1954-5-12 29466 Mariposa Sierra Nevada. Trail to Hites Cove. 609 Comment
  CAS-BOT-BC74778  Rorippa curvisiliqua John Thomas Howell 1955-6-5 30279 Tuolumne Sierra Nevada. Twain Harte. 1127 Comment
  CAS-BOT-BC20028  Carex feta John Thomas Howell 1976-8-13 52249 Mariposa Sierra Nevada. Yosemite Valley. Near Yosemite Lodge. 1219 Comment
  CAS-BOT-BC500248  Orobanche uniflora subsp. occidentalis John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey 1978-4-5 52771 Calaveras Sierra Nevada: Camp Nine Road NE of Vallecito 609 Comment
  RSA512853  Boisduvalia glabella J. T. Howell 1961-9-24 36903 Plumas Sierra Nevada: Feather River bed southwest of Beckworth. 1488 Comment
  CAS-BOT-BC459217  Euthamia occidentalis John Thomas Howell 1961-9-23 36819 Plumas Sierra Nevada: Greenville 1088 Comment
  CAS-BOT-BC451303  Allotropa virgata John Thomas Howell 1958-8-1 34151 Fresno Sierra Nevada: On trail from Simpson Meadow to Dougherty Meadow 2438 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
  SEINET196535  Potentilla pensylvanica var. ovium John Thomas Howell 1949-8-5 26063 Inyo Sierra Nevada; Army Pass. 3658 Comment
  SEINET7292781 Image available Elysitanion hansenii John Thomas Howell 1977-1 52444 Calaveras Sierra Nevada; Dorrington 1463 Comment
  SEINET7552664 Image available Carex brainerdii John Thomas Howell 1962-7-10 s.n. Kern Sierra Nevada; Greenhorn Mountains; 1.5 miles S. of Summit 1951 Comment
  CDA3261  Amaranthus albus J. T. Howell 1962-9-22 38782 Kern Sierra Nevada; Greenhorn Range. Cooks Peak. Comment
  CDA22392  Phoradendron villosum subsp. villosum J. T. Howell 1970-9-22 47282 Tulare Sierra Nevada; Kern River Canyon, 3 miles south of Hospital Flat. Comment
  CAS-BOT-BC106458  Balsamorhiza hookeri John Thomas Howell 1962-6-18 37788 Plumas Sierra Valley near Beckwourth - Sierra Nevada 1487 Comment
  CAS-BOT-BC419888  Polygonum polygaloides subsp. confertiflorum John Thomas Howell 1962-6-18 37807 Plumas Sierra Valley near Beckwourth 1487 Comment
  CAS-BOT-BC119856  Carex nebrascensis John Thomas Howell 1962-6-18 37741 Plumas Sierra Valley near Beckwourth. 1487 Comment
  CAS-BOT-BC508374  Leucocrinum montanum John Thomas Howell 1978-4-19 52864 Plumas Sierra Valley on Dyson Lane sw of Vinton, Sierra Nevada Comment
  RSA224314  Lupinus variicolor J. T. Howell 1957-5-5 32179 San Francisco Sierra and 22nd Sts. Comment
  CAS-BOT-BC334569  Lasthenia californica John Thomas Howell 1956-5-6 31352 San Francisco Sierra and Missouri Streets, San Fransicso Comment
  CAS-BOT-BC141260  Phoradendron serotinum subsp. tomentosum John Thomas Howell 1940-7-28 15606 Fresno Sigzags E of Kings Canyon, Bubbs Creek Comment
  CAS-BOT-BC196173  Lupinus albifrons var. douglasii John Thomas Howell 1947-5-25 23196 Marin Simmons Trail, Mt. Tamalpais Comment
  SBBG47375  Athyrium filix-femina var. cyclosorum J. T. Howell 1958-7-22 33757 Fresno Simpson Meadow, Middle Fk of the Kings River 1828 Comment
  CAS-BOT-BC129198  Salix scouleriana John Thomas Howell 1958-7-25 33937 Fresno Simpson Meadow, Middle Fork of the Kings River - Sierra Nevada 1828 Comment
  CAS-BOT-BC136940  Cercocarpus ledifolius var. intricatus John Thomas Howell 1958-7-23 33795 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC159957  Prunus emarginata John Thomas Howell 1958-7-25 33932 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC227331  Elymus elymoides John Thomas Howell 1958-7-22 33724 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC261838  Eriogonum wrightii var. subscaposum John Thomas Howell 1958-7-25 33923 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC28487  Carex lenticularis var. lipocarpa John Thomas Howell 1958-7-24 33862 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC392137  Aquilegia formosa John Thomas Howell 1958-7-23 33811 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC90646  Artemisia ludoviciana subsp. incompta John Thomas Howell 1958-7-23 33809 Fresno Simpson Meadow, Middle Fork of the Kings River 1828 Comment
  CAS-BOT-BC255509  Castilleja applegatei var. pinetorum John Thomas Howell 1958-7-24 33879 Fresno Simpson Meadow, Middle Fork of the Kings River, Sierra Nevada 1828 Comment
  CAS-BOT-BC118189  Carex rossii John Thomas Howell; Gordon H. True 1970-6-25 46812 Tulare Sirretta Meadows, Kern Plateau 2743 Comment
  CAS-BOT-BC129974  Dodecatheon redolens John Thomas Howell 1949-7-20 25558 Tulare Sky Blue Lake 3505 Comment
  UC648274  Navarretia capillaris John Thomas Howell 1939-8-10 15258 Siskiyou Sky High Valley , Sky High Valley (Marble Mts.) Comment
  RSA201420  Salix lucida subsp. lasiandra J. T. Howell 1939-8-9 15206 Siskiyou Sky High Valley, Marble Mountains. 1829 Comment
  CAS-BOT-BC159683  Drymocallis glandulosa John Thomas Howell 1939-8-10 15264 Siskiyou Sky High Valley, Marble Mts. 1828 Comment
  CAS-BOT-BC139807  Ivesia lycopodioides var. megalopetala John Thomas Howell 1942-8-1 17539 Tulare Sky Parlor Meadow, Chagoopa Plateau Comment
  CAS-BOT-BC28262  Carex scopulorum var. bracteosa John Thomas Howell 1942-8-1 17552 Tulare Sky Parlor Meadow, Chagoopa Plateau Comment
  CAS-BOT-BC281836  Carduus tenuiflorus John Thomas Howell 1939-6-16 14741 San Mateo Skyline Blvd near Crystal Springs Lake Comment
  CAS-BOT-BC63492  Ceanothus oliganthus var. sorediatus John Thomas Howell 1939-6-16 14750 Santa Clara Skyline Boulevard near Saratoga Gap. Comment
  CAS-BOT-BC347522  Malacothrix floccifera J. T. Howell 1959-9-21 s.n. Plumas Slaty road-cut Feather R. Canyon at East Branch Comment
  CAS-BOT-BC64224  Sedum obtusatum subsp. obtusatum John Thomas Howell 1944-8-6 20024 Tuolumne Slope North of Tuolumne Meadows Comment
  CAS-BOT-BC541023  Potentilla gracilis var. fastigiata John Thomas Howell 1940-8-2 15879 Tulare Slope north of Reflection Lake 3352 Comment
  CAS-BOT-BC249561  Castilleja applegatei subsp. pallida John Thomas Howell 1944-8-6 20027 Tuolumne Slope north of Tuolumne Meadows Comment
  CAS-BOT-BC62214  Selaginella watsonii John Thomas Howell 1944-8-6 20025 Tuolumne Slope north of Tuolumne Meadows 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
  SD131012  Eleocharis parishii John Thomas Howell, Gordon H. True 1967-5-30 42442 Tulare Slopes west of Lamont Meadow, Kern Plateau. (IPB 10/07) 1707 Comment
  CAS-BOT-BC24814  Arctostaphylos glandulosa subsp. glandulosa John Thomas Howell 1931-6-18 6740 Del Norte Smith River Canyon. Comment
  SEINET8267658  Diplacus aurantiacus Thomas Howell 1884-6-10 233 Unknown Smith River. Comment
  CAS-BOT-BC145092  Phacelia mohavensis John Thomas Howell; Gordon H. True 1969-10-1 46410 Tulare 1 mile south of Snake Creek on Poison Meadow to Brush Creek Overlook road 2438 Comment
  CAS-BOT-BC72710  Pteridium aquilinum John Thomas Howell; Gordon H. True 1969-10-1 46430 Tulare Snake Spring, about 2.5 miles north of Poison Meadow, Kern Plateau 2499 Comment
  RSA44393  Scirpus congdonii J. T. Howell 1938-8-13 14573 Mariposa Snow Flat 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
  POM261436  Styrax redivivus J. T. Howell 1940-6-30 15589 Lake Soda Bay. Comment
  CAS-BOT-BC124639  Salix lemmonii John Thomas Howell; Gordon H. True 1968-7-19 4448 Madera Soda Springs campground on middle fork San Joaquin River 2316 Comment
  CAS-BOT-BC195569  Deschampsia elongata John Thomas Howell 1944-8-5 19928 Tuolumne Soda Springs, Tuolumne Meadows Comment
  CAS-BOT-BC201700  Deschampsia danthonioides John Thomas Howell 1944-8-5 s.n. Tuolumne Soda Springs, Tuolumne Meadows Comment
  CAS-BOT-BC275195  Muhlenbergia montana John Thomas Howell 1949-7-23 25646 Tulare Soldier Lake 3352 Comment
  CAS-BOT-BC363673  Senecio fremontii var. occidentalis John Thomas Howell 1949-7-23 25650 Tulare Soldier Lake 3352 Comment
  CAS-BOT-BC13968  Boechera lemmonii John Thomas Howell 1949-7-23 25653 Tulare Soldier Lake. 3352 Comment
  CAS-BOT-BC293631  Erigeron biolettii John Thomas Howell 1932-10-9 10811 Sonoma Sonoma Creek Canyon near Kenwood Springs Comment
  CAS-BOT-BC191895  Garrya flavescens John Thomas Howell 1962-5-22 37320 Tulare South Creek near Deerwood. 1188 Comment
  CAS-BOT-BC348432  Micropus californicus var. californicus John Thomas Howell; T. C. Fuller; G. D. Barbe 1980-5-19 53457 Tehama 0.3 mile south of South Fork Cottonwood Creek on road from Red Bluff to Beegum 243 Comment
  CAS-BOT-BC265596  Eriogonum parishii John Thomas Howell; Gordon H. True 1967-7-5 43177 Tulare 2.8 miles north of South Fork Kern River bridge on road to Troy Meadow, Kern Plateau, Sierra Nevada 2194 Comment
  UC880849  Nama lobbii John Thomas Howell 1938-8-1 13987 Nevada South Fork Yuba River 1676 Comment
  JEPS89121  Mimulus John Thomas Howell 1958-7-20 33699 Fresno between South Fork and Middle Fork; Granite Basin, Kings River 3048 Comment
  A367952  Ceanothus cordulatus J. T. Howell 1937-7-21 13189 Unknown South Fork of Salmon River near Big Flat 1524 Comment
  A401847  Garrya fremontii J. T. Howell 1937-7-23 13346 Unknown South Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC164969  Clarkia rhomboidea John Thomas Howell 1937-7-22 13307 Siskiyou South Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC23422  Carex multicostata John Thomas Howell 1937-7-21 13199 Siskiyou South Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC234797  Symphoricarpos mollis John Thomas Howell 1937-7-23 13362 Siskiyou South Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC316019  Hieracium nudicaule John Thomas Howell 1937-7-21 13178 Siskiyou South Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC391507  Aconitum columbianum subsp. columbianum John Thomas Howell 1937-7-22 13323 Siskiyou South Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC436703  Luzula comosa var. laxa John Thomas Howell 1937-7-22 13278 Siskiyou South Fork of Salmon River near Big Flat 1524 Comment
  CAS-BOT-BC22296  Carex hassei John Thomas Howell 1937-7-23 13334 Siskiyou South Fork of Salmon River near Big Flat. 1524 Comment
  CAS-BOT-BC28431  Carex lenticularis var. lipocarpa John Thomas Howell 1937-7-23 13339 Siskiyou South Fork of Salmon River near Big Flat. 1524 Comment
  CAS-BOT-BC87845  Streptanthus tortuosus John Thomas Howell 1937-7-22 13298 Siskiyou South Fork of Salmon River near Big Flat. 1524 Comment
  SEINET7561712 Image available Carex hoodii John Thomas Howell 1937-7-21 13196 Siskiyou South Fork of Salmon River near Big Flat. 1524 Comment
  RSA971  Woodwardia fimbriata J. T. Howell 1928-6-29 1007 Los Angeles 8 miles South Seminole Hot Springs, Santa Monica Mountains 610 Comment
  GH365862  Cordylanthus rigidus subsp. brevibracteatus J. T. Howell & G. H. True 1967-8-8 43562 Unknown South east of Long Valley, on road to Lamont Meadow. Kern Plateau. 1676 Comment
  CAS-BOT-BC451833  Triglochin maritima John Thomas Howell 1944-7-9 19710 Marin South end of Tomales Bay Comment
  CAS-BOT-BC198492  Deschampsia danthonioides John Thomas Howell 1943-5-15 18100 Marin South end, Tiburon Peninsula Comment
  CAS-BOT-BC10011  Delphinium hesperium subsp. pallescens John Thomas Howell 1934-4-8 11824 Contra Costa South of Antioch Comment
  CAS-BOT-BC49677  Ceanothus cuneatus var. ramulosus John Thomas Howell 1926-2-28 1647 Marin South side of Mt. Tamalpais Comment
  CAS-BOT-BC474283  Allium obtusum var. obtusum John Thomas Howell 1961-6-20 36567 Shasta South slope of Diamond Peak 2255 Comment
  CAS-BOT-BC78516  Pinus contorta subsp. murrayana John Thomas Howell; Gordon H. True 1970-7-28 47047 Tulare Southeast end of Big Meadow on loop road, 0.7 mi. south of South Manter Pass Trail, Kern Plateau 2377 Comment
  CAS-BOT-BC220160  Monardella exilis John Thomas Howell; Gordon H. True 1967-8-8 43570 Tulare Southeast of Long Valley on road to Lamont Meadow, Kern Plateau 1859 Comment
  CAS-BOT-BC16448  Barbarea orthoceras John Thomas Howell; W. L. Jepson 1927-3-20 2291 Marin Southeast slope of Mount Tamalpais. 304 Comment
  CAS-BOT-BC297328  Eriophyllum confertiflorum John Thomas Howell 1927-6-1 2402 Orange Southern Puente Hills at the Santa Ana Canon 152 Comment
  CAS-BOT-BC224408  Cuscuta californica John Thomas Howell 1927-6-3 2420 Orange Southern Puente Hills in the Santa Ana Canon [Canyon] 152 Comment
  CAS-BOT-BC422196  Rumex californicus John Thomas Howell; Gordon H. True 1970-7-30 47174 Tulare Southwest end of Big Meadow just east of Cherry Hill Road. Kern Plateau 2377 Comment
  RSA108249  Minuartia rosei J. T. Howell 1955-7-17 s.n. Trinity Southwest of Peanut 762 Comment
  CAS-BOT-BC483408  Calochortus invenustus John Thomas Howell; Gordon H. True 1971-7-13 48366 Kern Southwest of Pine Flat on rim of Kern Plateau, Sierra Nevada Comment
  UCD103125  Erodium brachycarpum John Thomas Howell 1965-3-25 s.n. Sonoma Southwest of Sonoma. Comment
  UC526136  Rumex salicifolius var. lacustris John Thomas Howell 1934-7-8 12486 Lassen Spalding's Eagle Lake Comment
  CAS-BOT-BC308138  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  NY797393  Astragalus canadensis var. brevidens J. T. Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC97467  Aster John Thomas Howell 1976-7-16 51913 Plumas on flood plain of Spanish Creek at mouth of Wapaunsie Creek 1097 Comment
  CAS-BOT-BC337887  Lasthenia John Thomas Howell; Gordon H. True 1969-5-13 45616 Kern Spanish Needle Creek road to Lamont Meadow 1280 Comment
  RSA22088  Juncus mertensianus J. T. Howell 1939-8-5 15063 Siskiyou Spirit Lake, Marble Mtns 1829 Comment
  CAS-BOT-BC140202  Luetkea pectinata John Thomas Howell 1939-8-2 14872 Siskiyou Spirit Lake, Marble Mts. 1828 Comment
  CAS-BOT-BC157322  Sorbus californica John Thomas Howell 1939-8-3 14979 Siskiyou Spirit Lake, Marble Mts. 1828 Comment
  RSA22033  Heuchera merriamii John T. Howell 1939-8-2 14863 Siskiyou Spirit Lake, Marble Mts. Comment
  CAS-BOT-BC42092  Arctostaphylos patula John Thomas Howell 1975-6-16 51132 Plumas 2 miles northwest of Spring Garden 1173 Comment
  GH350958  Arctostaphylos patula J. T. Howell 1976-4-2 51579 Unknown near Spring Garden 1219 Comment
  GH350959  Arctostaphylos patula J. T. Howell 1976-4-2 51580 Unknown near Spring Garden 1219 Comment
  CAS-BOT-BC474057  Allium parvum John Thomas Howell 1975-6-16 51138 Plumas 2 miles northwest of Spring Garden, Sierra Nevada 1173 Comment
  CAS-BOT-BC288698  Cirsium remotifolium John Thomas Howell 1931-4-19 6437 Napa Spring Mt Rd, 3 miles from St Helena Comment
  CAS-BOT-BC508158  Fritillaria recurva John Thomas Howell 1926-3-21 1720 Lake St. Helena Creek, 4 miles below Patten's 609 Comment
  CAS-BOT-BC64606  Androsace elongata subsp. acuta John Thomas Howell 1952-6-14 28347 Siskiyou 9.5 mi. from St. Jones on road to Callehan. Comment
  UC517456  Carduus pycnocephalus subsp. pycnocephalus J. Thomas Howell 1933-5-14 11246 Contra Costa hills e of St. Mary's College Comment
  UC517457  Madia gracilis John Thomas Howell 1933-5-14 11266 Contra Costa hills e St. Mary's College Comment
  UC517484  Nemophila heterophylla John Thomas Howell 1933-5-14 11218 Contra Costa hills e St. Mary's College; hills e of St. Mary's College Comment
  CAS-BOT-BC264162  Melica subulata John Thomas Howell 1948-6-6 24336 Marin Steep Ravine, Mt. Tamalpais Comment
  CAS-BOT-BC147276  Rubus parviflorus John Thomas Howell 1923-7-12 119 Mariposa Stella Lake, Wawona 1219 Comment
  CAS-BOT-BC141591  Cotoneaster pannosus John Thomas Howell 1959-11-4 35109 Marin Stinson Beach Comment
  CAS-BOT-BC222338  Amsinckia douglasiana John Thomas Howell 1931-3-22 5970 Monterey Stone Canyon 13 miles east of Salinas Valley Comment
  RSA223681  Lepidium densiflorum J. T. Howell 1957-8-12 32893 San Francisco Stow Lake, Golden Gate Park, San Francisco. Comment
  CAS-BOT-BC157528  Solanum umbelliferum J. T. Howell 1933-5-28 11352 Alameda Strawberry Canyon, Berkeley Hills Comment
  CAS-BOT-BC342934  Madia gracilis John Thomas Howell 1933-5-28 11368 Alameda Strawberry Canyon, Berkeley Hills Comment
  CAS-BOT-BC392100  Aquilegia formosa John Thomas Howell 1933-5-28 11361 Alameda Strawberry Canyon, Berkeley Hills Comment
  CAS-BOT-BC392101  Aquilegia formosa John Thomas Howell 1933-5-28 11357 Alameda Strawberry Canyon, Berkeley Hills Comment
  POM196459  Oemleria cerasiformis J. T. Howell 1925-2-8 745 Alameda Strawberry Canyon, Berkeley Hills. Comment
  CDA5000  Lavatera cretica J. T. Howell 1945-6-1 20913 A San Francisco Strybing Arboretum, Golden Gate Park, San Francisco. 0 Comment
  CAS-BOT-BC231313  Polemonium pulcherrimum John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-28 53151 Alpine Subalpine western slope of Ebbetts Peak 2773 Comment
  CAS-BOT-BC374738  Sonchus oleraceus John Thomas Howell 1933-9-17 11672 Solano Suisun Comment
  SEINET183977  Cirsium hydrophilum John Thomas Howell 1938-8-28 14590 Solano Suisun Marshes Comment
  RSA14946  Achillea millefolium var. puberula John T. Howell 1934-9-23 12573 Solano Suisun Marshes at Benecia [Benicia] Junction Comment
  CAS-BOT-BC304846  Grindelia hirsutula John Thomas Howell 1933-11-19 11728 Solano Suisun Marshes at Pierce Station Comment
  RSA22193  Cirsium hydrophilum var. hydrophilum J. T. Howell 1939-8-28 14590 Solano Suisun Marshes. Comment
  CAS-BOT-BC218633  Achnatherum occidentale subsp. pubescens John Thomas Howell 1960-8-18 36090 Tehama Sulphur Works Checking Station, Lassen Volcanic National Park 2011 Comment
  UCD62810  Elymus X hansenii John Thomas Howell 1960-8-18 36084 Tehama Sulphur Works Checking Station. Lassen Volcanic National Park. 2011 Comment
  CAS-BOT-BC504363  Erythronium purpurascens John Thomas Howell 1961-6-20 36575 Tehama Sulphur Works entrance station, Lassen Volcanic National Park 2011 Comment
  RSA40148  Rubus discolor J. T. Howell 1943-8-29 19311 Marin Summit (Avenue[?]) Ridge. Mill Valley. Comment
  CAS-BOT-BC374827  Stebbinsoseris heterocarpa John Thomas Howell 1944-5-27 19502 Marin Summit Ave. ridge, Mt. Tamalpais Comment
  CAS-BOT-BC288737  Cirsium remotifolium John Thomas Howell 1939-6-25 14795 Marin Summit Avenue, Mill Valley Comment
  CAS-BOT-BC288752  Cirsium remotifolium John Thomas Howell 1939-6-25 14798 Marin Summit Avenue, Mill Valley Comment
  CAS-BOT-BC434108  Rumex transitorius John Thomas Howell 1939-6-25 14793 Marin Summit Avenue, Mill Valley Comment
  CAS-BOT-BC238676  Sambucus nigra subsp. caerulea John Thomas Howell 1950-7-26 27363 Inyo Summit Creek, east of Olancha Pass 2773 Comment
  CAS-BOT-BC539532  Potentilla biennis John Thomas Howell 1950-7-26 27355 Inyo Summit Creek, east of Olancha Pass 2834 Comment
  CAS-BOT-BC264483  Penstemon heterodoxus var. heterodoxus John Thomas Howell 1943-7-22 18705 Placer Summit Valley Comment
  RSA39974  Juncus orthophyllus J. T. Howell 1943-7-22 18706 Placer Summit Valley. Comment
  UC843096  Luzula divaricata John Thomas Howell 1937-7-25 13510 Trinity Summit between Caribou Basin and Stuart Fork of Trinity River bet Caribou Basin and Stuart Fork Trinity River 2225 Comment
  CAS-BOT-BC383995  Abronia turbinata John Thomas Howell 1950-8-29 27460 Mono Summit between Crestview and Mono Lake 2438 Comment
  CAS-BOT-BC438346  Calandrinia ciliata John Thomas Howell 1933-5-28 11372 Alameda Summit of Berkeley Hills at head of Strawberry Canyon. Comment
  RSA118040  Trifolium dichotomum J. T. Howell 1955-5-20 30230 Monterey Summit of Jamesburg Road, Santa Lucia Mts. Comment
  CAS-BOT-BC384391  Silene bernardina John Thomas Howell; Gordon H. True 1971-7-14 48383 Tulare Summit of North Manter Pass on trail from Big Meadow to Manter Meadow. Kern Plateau Comment
  CAS-BOT-BC196843  Lupinus breweri var. grandiflorus John Thomas Howell; Gordon H. True 1970-6-24 46689 Tulare Summit of North Manter Pass, Big Meadow to Manter Meadow, Kern Plateau 2499 Comment
  RSA136745  Systenotheca vortriedei J. T. Howell 1955-7-7 s.n. Monterey Summit of Pinyon Peak; Santa Lucia Mountains. 1605 Comment
  CAS-BOT-BC123571  Pyrrocoma racemosa var. pinetorum John Thomas Howell 1936-8-24 12752 Trinity Summit of Scott Mts. N of Carrville. Comment
  CAS-BOT-BC285355  Cirsium andersonii John Thomas Howell 1936-8-24 12728 Trinity Summit of Scott Mts. n. of Carrville Comment
  CAS-BOT-BC158656  Purshia tridentata var. glandulosa John Thomas Howell 1930-5-13 5010 Kern Summit of Walker Pass 1584 Comment
  RSA40149  Acacia dealbata J. T. Howell 1943-8-29 19312 Marin Summit ridge above Mill Valley. 152 Comment
  CAS-BOT-BC384305  Silene bernardina John Thomas Howell 1944-7-13 19753 Glenn Summit ridge north of Black Butte Comment
  CAS-BOT-BC428996  Micranthes fragosa John Thomas Howell 1944-7-13 19748 Glenn Summit ridge north of Black Butte Comment
  GH341817  Festuca idahoensis J. T. Howell 1943-4-4 19056 Unknown Summit ridge north of Black Butte Comment
  CAS-BOT-BC246003  Sambucus nigra subsp. caerulea John Thomas Howell 1956-6-17 21579 San Francisco Summit ridge of BAyview Hills, San Francisco Comment
  RSA217999  Eriogonum latifolium J. T. Howell 1956-6-17 31593 San Francisco Summit ridge of Bayview Hills Comment
  CAS-BOT-BC115704  Carex tahoensis John Thomas Howell 1946-8-31 22952 El Dorado Summit ridge of Mt Tallac. Type-locality. 2956 Comment
  CAS-BOT-BC239298  Penstemon newberryi var. berryi John Thomas Howell; Gordon H. True 1967-7-11 43351 Plumas Summit ridge of Mt. Hough 2194 Comment
  RSA263834  Chrysolepis sempervirens J. T. Howell 1962-9-24 38851 Kern Summit ridge of Sunday Peak.Greenhorn Mtns. 2438 Comment
  CAS-BOT-BC271099  Melica bulbosa John Thomas Howell; Gordon H. True 1973-7-31 50102 Plumas Summit ridge of Thompson Peak, Diamond Range, Sierra Nevada 2194 Comment
  RSA201327  Castilleja arachnoidea J. T. Howell 1960-8-19 36169 Shasta Summit ridge, Brokeoff Mtn. 2744 Comment
  CAS-BOT-BC133587  Iris hartwegii John Thomas Howell 1962-7-8 38294 Kern 1.5 miles southeast of Summit, Greenhorn Mountains 1524 Comment
  CAS-BOT-BC440104  Claytonia perfoliata subsp. perfoliata John Thomas Howell 1962-7-8 38287 Kern 1.5 miles se. of Summit, Greenhorn Mountains 1524 Comment
  CAS-BOT-BC330410  Perityle megalocephala var. oligophylla John Thomas Howell 1928-6-14 3906 Inyo Surprise Canon near Panamint City, Panamint Mts. 2438 Comment
  CAS-BOT-BC330411  Perityle megalocephala var. oligophylla John Thomas Howell 1928-6-14 3906 Inyo Surprise Canon near Panamint City, Panamint Mts. 2438 Comment
  CAS-BOT-BC265480  Penstemon fruticiformis var. fruticiformis John Thomas Howell 1928-6-14 3922 Inyo Surprise Canyon, Panamint Mountains 2286 Comment
  CAS-BOT-BC170785  Eucnide urens John Thomas Howell 1928-6-16 3960 Inyo Surprise Canyon, Panamint Mts. 975 Comment
  UC173490  Chaenactis douglasii var. douglasii J. Thomas Howell 1928-6-17 3992 Inyo Surprise Canyon, Panamint Mts. Comment
  UC473492  Selaginella leucobryoides John Thomas Howell 1928-6-16 3989 Inyo Surprise Canyon; Panamint Mts. Comment
  CAS-BOT-BC286116  Conyza canadensis John Thomas Howell 1974-7-8 50503 Lassen Susanville 1295 Comment
  UCD46622  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles west of Susanville. 1371 Comment
  CAS-BOT-BC239965  Scribneria bolanderi John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  CAS-BOT-BC183960  Vulpia microstachys var. microstachys John Thomas Howell 1976-4-1 51537 Butte Table Mt. 304 Comment
  CAS-BOT-BC156097  Bromus diandrus John Thomas Howell 1957-6-25 s.n. Kern Tehachapi Mountains. 6 miles northwest of Tehachapi. 1097 Comment
  CAS-BOT-BC180772  Salsola tragus John Thomas Howell 1957-6-24 32718 Kern Tehachapi Pass 1158 Comment
  CDA2413  Schismus barbatus J. T. Howell 1948-4-26 24272 Kern Tehachapi Pass Road east of Edison. 0 Comment
  CAS-BOT-BC182683  Astragalus douglasii John Thomas Howell 1928-4-5 3716 Kern Tehachapi Pass Road, 4 miles below Keene Station Comment
  CAS-BOT-BC71300  Pellaea mucronata John Thomas Howell 1958-7-27 34023 Fresno Tehipite Valley, Middle Fork of the Kings River 1280 Comment
  CAS-BOT-BC363671  Senecio fremontii var. occidentalis John Thomas Howell 1950-7-17 27025 Tulare Templeton Meadows 2590 Comment
  UC1042554  Astragalus subvestitus John Thomas Howell 1950-7-17 27027 Tulare Templeton Meadows; Sierra Nevada, Templeton Meadows 2590 Comment
  CAS-BOT-BC227330  Elymus elymoides John Thomas Howell 1958-8-2 34167 Fresno Tent Meadow (lower), Copper Creek Canyon 2377 Comment
  UCD51446  Achnatherum X bloomeri John Thomas Howell 1962-6-19 37841 Plumas The Buttes, n. Sierra Valley. 1493 Comment
  SEINET10596607  Oryzopsis hymenoides John Thomas Howell 1962-6-19 Howell 37841 Plumas The Buttes, near Sierra Valley. 1494 Comment
  CAS-BOT-BC339315  Lessingia glandulifera var. glandulifera John Thomas Howell 1930-10-24 5652 Monterey 5.2 miles east of The Indians, Santa Lucia Mts. Comment
  CAS-BOT-BC389173  Silene laciniata subsp. californica John Thomas Howell 1930-10-24 5664 Monterey 2.3 miles east of The Indians, Santa Lucia Mts. Comment
  CAS-BOT-BC102696  Populus tremuloides John Thomas Howell 1958-8-17 34558 Madera The Niche, East Fork of Granite Creek 2438 Comment
  CAS-BOT-BC107560  Salix lasiolepis var. lasiolepis John Thomas Howell 1958-8-17 34556 Madera The Niche, East Fork of Granite Creek 2438 Comment
  CAS-BOT-BC256943  Chorizanthe membranacea John Thomas Howell 1937-5-19 12920 San Benito The Pinnacles Comment
  CAS-BOT-BC403370  Eschscholzia californica John Thomas Howell 1933-4-23 11136 San Benito The Pinnacles Comment
  POM203665  Chaenactis glabriuscula var. lanosa J. T. Howell 1922-4-23 11140 San Benito The Pinnacles Comment
  POM204413  Eriogonum elongatum J. T. Howell 1933-8-17 11529 San Benito The Pinnacles Comment
  CAS-BOT-BC462209  Allium amplectens John Thomas Howell 1937-5-19 12956 San Benito The Pinnacles Comment
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Sep 29 2017
  CAS-BOT-BC67108  Thysanocarpus laciniatus John Thomas Howell 1933-4-23 11122 San Benito The Pinnacles. Comment
  CAS-BOT-BC87168  Streptanthus glandulosus subsp. glandulosus John Thomas Howell 1933-4-23 11100 San Benito The Pinnacles. Comment
  SD71380  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen The Sierra Nevada, Sagebrush flat, east side of Beckwourth Pass 1493 Comment
  CAS-BOT-BC460995  Chenopodium atrovirens John Thomas Howell 1949-7-30 25939 Tulare The Tunnel 2712 Comment
  RSA209518  Epilobium brachycarpum J. T. Howell 1956-8-19 31783 San Francisco Third St near Paul Ave. Comment
  CAS-BOT-BC289382  Hordeum murinum subsp. glaucum John Thomas Howell 1957-6-16 32657 San Francisco Third and Davidson Streets, San Francisco Comment
  RSA224335  Amaranthus powellii J. T. Howell 1957-6-16 32652 San Francisco Third and Davidson streets. Comment
  NY49387  Pinus balfouriana J. T. Howell 1970-6-25 46799 Tulare This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY61960  Pinus monticola J. T. Howell 1967-8-9 43676 Tulare This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
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Aug 15 2015
  NY17681  Torreya californica J. T. Howell 1972-4-25 48715 Mariposa This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UCD100420  Eriogonum microthecum var. laxiflorum John Thomas Howell 1973-7-31 50070 Plumas summit ridge of Thompson Peak; Diamond Range. 2362 Comment
  GH414831  Eriophyllum confertiflorum J. T. Howell 1950-6-11 26628 Unknown Throckmorton Ridge, Mt. Tamalpais Comment
  UC618501  Navarretia mellita John Thomas Howell 1938-6-19 13917 Marin Throckmorton Trail Mt. Tamalpais Comment
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Jul 2 2011
  CAS-BOT-BC143091  Potentilla anserina subsp. pacifica John Thomas Howell 1947-5-21 23194 Marin Tiburon Comment
  CAS-BOT-BC198788  Vulpia bromoides John Thomas Howell 1943-5-15 18080 Marin Tiburon Peninsula Comment
  CAS-BOT-BC199639  Trisetum canescens John Thomas Howell 1943-5-15 18087 Marin Tiburon Peninsula Comment
  SEINET249949  Elymus elymoides subsp. brevifolius John Thomas Howell 1943-5-15 18082 Marin Tiburon Peninsula. Comment
  RSA32136  Ludwigia hexapetala J. T. Howell 1945-7-1 21259 Marin Tiburon. Comment
  CAS-BOT-BC80559  Cupressus bakeri John Thomas Howell 1934-7-4 12386 Siskiyou between Timbered Crater and Little Hot Springs Valley Comment
  CAS-BOT-BC78416  Pinus balfouriana John Thomas Howell 1950-7-22 27208 Tulare Timberline, Olancha Peak 3535 Comment
  SEINET11690148  Lolium multiflorum J. T. Howell, Knight, W.; Knight, I. 1987-1 6231 Sonoma Todd Road Preserve, NE corner of Llano & Todd Rds 24 Comment
  CAS-BOT-BC129882  Salix bonplandiana John Thomas Howell; R. C. Barneby 1954-5-10 29351 Fresno 3 miles above Tollhouse - Sierra Nevada 1082 Comment
  GH361131  Scribneria bolanderi J. T. Howell 1954-4-26 29178 Unknown just west of Tower House Comment
  CAS-BOT-BC19575  Carex bolanderi John Thomas Howell 1951-7-15 27777 Tulare Tranger Creek, Mineral King road. 1371 Comment
  CAS-BOT-BC214027  Amsinckia John Thomas Howell 1933-4-22 11039 San Benito 1.5 miles s. of Tres Pinos Comment
  POM204482  Solanum umbelliferum J. T. Howell 1933-4-22 11033 San Benito 1.5 miles south of Tres Pinos Comment
  CAS-BOT-BC169666  Alnus rhombifolia John Thomas Howell 1936-8-27 12842 Trinity near Trinity Center Comment
  UC875302  Osmorhiza occidentalis John Thomas Howell 1937-7-29 13638 Siskiyou between Trinity Co. and Siskiyou County; Scott Mt. Comment
  UC879886  Navarretia linearifolia subsp. linearifolia John Thomas Howell 1937-7-28 13600 Trinity Trinity River Canyon near Eagle Creek; Trinity River Canyon near Eagle Creek Comment
  CAS-BOT-BC158962  Horkeliella purpurascens John Thomas Howell; Gordon H. True 1967-7-4 42986 Tulare 1.2 miles south of Troy Meadow - Kern Plateau, Sierra Nevada 2377 Comment
  GH420120  Plagiobothrys torreyi J. T. Howell & G. H. True 1967-7-4 42932 Unknown Troy Meadow. Kern Plateau 2377 Comment
  CAS-BOT-BC272703  Eriogonum spergulinum var. reddingianum John Thomas Howell 1978-7-29 53339 Nevada 5 miles north of Truckee on road to Sierraville 1767 Comment
  CAS-BOT-BC292269  Dieteria canescens John Thomas Howell 1978-7-29 53348 Nevada 5 miles north of Truckee on road to Sierraville 1767 Comment
  CAS-BOT-BC299986  Deinandra kelloggii John Thomas Howell; R. C. Barneby 1954-5-8 29212 Tulare Tule River Canyon, 5 miles above Springville, Sierra Nevada 548 Comment
  CAS-BOT-BC25955  Boechera tularensis John Thomas Howell 1949-7-29 25870 Tulare Tunnel to Groundhog Meadow. 2682 Comment
  CAS-BOT-BC115014  Carex vesicaria John Thomas Howell 1938-8-12 14551 Tuolumne Tuolumne Meadows Comment
  UCD52783  Agrostis idahoensis John Thomas Howell 1944-8-7 20095 Tuolumne Tuolumne Meadows. Comment
  UCD57216  Calamagrostis canadensis John Thomas Howell 1944-8-7 20061 Tuolumne Tuolumne Meadows. Comment
  CAS-BOT-BC88001  Subularia aquatica subsp. americana John Thomas Howell 1944-8-9 20194 Tuolumne Tuolumne Meadows. Near Parsons Lodge. Comment
  SEINET7294124 Image available Poa secunda subsp. secunda John Thomas Howell 1955-1 30289 Tuolumne Twain Harte 1128 Comment
  CAS-BOT-BC282785  Glyceria elata John Thomas Howell 1954-6-6 29955 Tuolumne Twain Harte, Sierra Nevada 1127 Comment
  SEINET7561556 Image available Carex hirtissima John Thomas Howell 1954-6-7 29988 Tuolumne Twain Harte. 1128 Comment
  CAS-BOT-BC324122  Lessingia hololeuca John Thomas Howell 1930-10-5 5538 Solano Two miles west of Rio Vista Junction Comment
  CAS-BOT-BC152242  Diplacus bolanderi John Thomas Howell; Alice Eastwood 1937-6-20 4581 Mendocino 5 miles from Ukiah on road to Boonville Comment
  CAS-BOT-BC208982  Digitaria ischaemum John Thomas Howell 1961-11-5 37075 San Francisco Union St. neaer Van Ness Ave., San Francisco Comment
  UC75062  Linum bienne John Thomas Howell 1945-4-19 20774 Alameda University of California at Berkeley, near Observatory University of California at Berkeley Comment
  CAS-BOT-BC216470  Achnatherum occidentale subsp. californicum John Thomas Howell 1946-8-30 22921 El Dorado Upper Angora Lake Comment
  CAS-BOT-BC244283  Podagrostis humilis John Thomas Howell 1946-8-30 22918 El Dorado Upper Angora Lake Comment
  CAS-BOT-BC57660  Isoetes bolanderi John Thomas Howell 1946-8-30 22903 El Dorado Upper Angora Lake 2286 Comment
  RSA54065  Achnatherum occidentale subsp. californicum J. T. Howell 1946-8-30 22921 El Dorado Upper Angora Lake Comment
  CAS-BOT-BC54137  Cryptantha circumscissa var. rosulata John Thomas Howell 1949-8-12 26227 Inyo Upper Cottonwood Lakes 3413 Comment
  CAS-BOT-BC231179  Hackelia sharsmithii John Thomas Howell 1949-8-10 26211 Tulare Upper Soldier Lake 3413 Comment
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Jan 17 2020
  CAS-BOT-BC304513  Grindelia hirsutula John Thomas Howell 1964-12-6 41032 San Mateo Vacant lot near S. P. R. R. station, Millbrae Comment
  CAS-BOT-BC304156  Eriophyllum confertiflorum John Thomas Howell 1931-4-11 6249 Santa Barbara Valle del Medio, Santa Cruz Island Comment
  CAS-BOT-BC279253  Centromadia pungens subsp. pungens John Thomas Howell 1929-10-26 4542 Napa 9 miles north of Vallejo 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
  CAS-BOT-BC98255  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1967-11-3 44034 Tulare Vernal pool nartural area, about 4.5 miles east-northeast of Pixley 83 Comment
  UCD60744  Echinochloa colona John Thomas Howell; Gordon True 1967-9-21 43961 Tulare Vernal pool natural area in Valley Grassland, about 4.5 miles east-north-east of Pixley. Outside fence at NW corner. 83 Comment
  CAS-BOT-BC24989  Arctostaphylos densiflora John Thomas Howell 1931-3-14 5768 Sonoma Vine Hill District, 10 mi. W of Santa Rosa. Comment
  GH349313  Ceanothus foliosus J. T. Howell 1931-3-14 5780 Unknown Vine Hill District, 10 miles west of Santa Rosa Comment
  CAS-BOT-BC20449  Carex globosa John Thomas Howell 1945-5-30 20913 Sonoma Vine Hill School. Comment
  CAS-BOT-BC38718  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1931-3-14 5775 Sonoma Vine Hill district, 10 miles west of Santa Rosa Comment
  CAS-BOT-BC311749  Holozonia filipes J. T. Howell; Gordon H. True 1969-6-24 5091 Yuba Vineyard Creek ca. 4 miles south of Smartville on Beale AFB Rd. 152 Comment
  CAS-BOT-BC208630  Distichlis spicata John Thomas Howell 1955-7-19 30789 Plumas Vinton - Sierra Nevada 1505 Comment
  CAS-BOT-BC72610  Pteridium aquilinum John Thomas Howell 1959-9-21 34803 Plumas 4.6 miles from Virgilia on road to Quincy Comment
  SEINET3996514 Image available Monardella odoratissima subsp. parvifolia John Thomas Howell 1949-7-30 25927 Tulare Volcanic cone at Tunnel 2743 Comment
  CAS-BOT-BC70850  Dryopteris arguta John Thomas Howell 1969-4-22 45539 Amador Volcano 609 Comment
  CAS-BOT-BC288700  Cirsium remotifolium John Thomas Howell 1952-7-12 28840 Del Norte 0.5 mile W of Adams Station Comment
  CAS-BOT-BC288701  Cirsium remotifolium John Thomas Howell 1952-7-12 28840 Del Norte 0.5 mile W of Adams Station Comment
  CAS-BOT-BC229611  Mirabilis greenei John Thomas Howell 1952-6-14 28356 Siskiyou 6 miles W of Gazelle on road to Callahan Comment
  RSA78600  Galium divaricatum J. T. Howell 1943-6-19 18237 Napa W of Napa Valley betw St. Helena and Mt. St. John. Napa Valley. 229 Comment
  CAS-BOT-BC117898  Carex scabriuscula John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-23 54148 Plumas 2.65 miles W of Round Valley Reservoir dam. 1569 Comment
  SBBG47381  Pellaea mucronata J. T. Howell 1958-7-30 34120 Fresno W of Simpson Meadow on trail to Tehipite Valley, Middle Fk of the Kings River 1798 Comment
  RSA201258  Chrysothamnus parryi subsp. latior J. T. Howell 1960-8-22 36414 Shasta 1/2 mile W of park line on road Viola. Comment
  CAS-BOT-BC254836  Poa bolanderi John Thomas Howell; Gordon H. True 1970-7-28 46967 Tulare W side of Big Meadow just S of Pipe Spring, Kern Plateau 2377 Comment
  CAS-BOT-BC259812  Nassella cernua John Thomas Howell 1963-5-5 39068 Monterey W side of Mustang Summit Comment
  RSA88559  Ivesia pygmaea J. T. Howell 1951-6-18 27910 Tulare W side, Franklin Pass. 3354 Comment
  CAS-BOT-BC66997  Thysanocarpus laciniatus John Thomas Howell 1930-5-13 5020 Kern 8.5 miles west of summit of Walker Pass. Comment
  JEPS42861  Mentzelia laevicaulis var. laevicaulis John Thomas Howell 1927-8-24 3048 Napa sw Walter's Springs (near Pope Valley Creek); Napa Range Comment
  UC908870  Eriastrum sapphirinum John Thomas Howell 1927-11-27 3268 San Diego 12 mi s Warner's Hot Springs 822 Comment
  RSA225  Eriogonum brachyanthum J. T. Howell 1927-8-1 541 San Bernardino Warren's Well, Mojave Desert 915 Comment
  RSA217972  Bassia hyssopifolia J. T. Howell 1956-6-3 31466 San Francisco Waste ground at east end of Shafter Street, S of Hunters Point, San Francisco. Comment
  SEINET10489019  Lupinus succulentus John Thomas Howell 1956-5-12 Howell s.n. Unknown Waste ground, marin st, near third st. Comment
  CAS-BOT-BC55609  Ambrosia confertiflora John Thomas Howell 1956-11-4 31948 San Francisco Waterfront St near Mission Rock Terminal Comment
  UCD140269  Carex densa John Thomas Howell 1963-8-5 39906 Monterey along Watsonville-San Juan Road, about 2 miles south of Aromas. Comment
  CAS-BOT-BC14752  Agoseris retrorsa John Thomas Howell 1924-6-10 397 Mariposa Wawona 1219 Comment
  CAS-BOT-BC181341  Silene latifolia John Thomas Howell 1923-7-31 186 Mariposa Wawona 1219 Comment
  CAS-BOT-BC400671  Asarum hartwegii John Thomas Howell 1923-6-27 96 Mariposa Wawona 1219 Comment
  CAS-BOT-BC363564  Senecio clarkianus John Thomas Howell 1924-7-11 459 Mariposa Wawona Meadow 1219 Comment
  CAS-BOT-BC388541  Herniaria hirsuta var. cinerea John Thomas Howell 1924-7-29 588 Mariposa Wawona Meadow 1219 Comment
  CAS-BOT-BC154797  Prunus virginiana var. demissa John Thomas Howell 1924-5-18 338 Mariposa Wawona Road to Yosemite near Wawona 1371 Comment
  CAS-BOT-BC55812  Frangula rubra subsp. yosemitana John Thomas Howell 1924-7-22 478 Mariposa Wawona Valley 1219 Comment
  CAS-BOT-BC106807  Salix hindsiana John Thomas Howell 1955-7-17 30680 Trinity Weaverville 609 Comment
  CAS-BOT-BC302699  Gnaphalium palustre John Thomas Howell 1955-7-17 30679 Trinity Weaverville 609 Comment
  CAS-BOT-BC20526  Carex densa John Thomas Howell 1955-6-14 30411 Trinity Weaverville. 609 Comment
  CAS-BOT-BC378857  Ranunculus californicus var. californicus John Thomas Howell; Gordon H. True 1971-6-16 47986 Kern Weldon Meadow 1981 Comment
  CAS-BOT-BC110542  Eschscholzia John Thomas Howell 1955-6-15 30506 Butte West Branch of North Fork of Feather River. 182 Comment
  CAS-BOT-BC143425  Potentilla John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-28 53162 Alpine West base of Ebbetts Peak Comment
  POM180603  Orthocarpus faucibarbatus J. T. Howell 1930-5-21 5185 Monterey West base of San Juan Grade near Salinas. Comment
  CAS-BOT-BC34072  Carex brevicaulis John Thomas Howell 1965-3-29 41035 San Mateo West end of summit ridge of San Bruno Mountain. 396 Comment
  CAS-BOT-BC240006  Scribneria bolanderi John Thomas Howell 1945-4-29 20791 Marin West of Camp Handy, Mt. Tamalpais Comment
  CAS-BOT-BC100874  Chrysothamnus viscidiflorus subsp. viscidiflorus John Thomas Howell; Gordon H. True 1967-9-18 43811 Tulare West of Chimney Meadow at summit of road to Long Valley, Kern Plateau 2438 Comment
  CAS-BOT-BC147775  Purshia tridentata var. tridentata John Thomas Howell; Barbara T. Menzies; Roberta Shockey 1978-6-28 53132 Alpine West of Ebbetts Peak 2712 Comment
  RSA44331  Carex phaeocephala J. T. Howell 1947-8-7 23871 Inyo West of Sixth Lake, Big Pine Lakes. 3415 Comment
  CAS-BOT-BC443380  Saxifraga debilis John Thomas Howell 1947-8-7 23859 Inyo West of Sixth Lake; Big Pine Lakes 3413 Comment
  CAS-BOT-BC192328  Danthonia unispicata John Thomas Howell 1977-6-22 52406 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  RSA127620  Garrya flavescens subsp. pallida J. T. Howell 1955-5-18 30176 Monterey West of saddle between Junipero Serra and Pinyon peaks, Santa Lucia Mountains. 1524 Comment
  CAS-BOT-BC297124  Erigeron compositus John Thomas Howell 1942-7-28 17350 Tulare West side Black Rock Pass Comment
  CAS-BOT-BC222780  Perideridia parishii John Thomas Howell; Gordon H. True 1970-7-28 46986 Tulare West side of Big Meadow just south of Pipe Spring. Kern Plateau 2377 Comment
  CAS-BOT-BC362090  Psilocarphus tenellus John Thomas Howell; Gordon H. True 1970-7-28 47015 Tulare West side of Big Meadow just south of Pipe Spring. Kern Plateau 2377 Comment
  CAS-BOT-BC115141  Carex vesicaria John Thomas Howell 1943-7-17 18495 Nevada West side of Donner Pass near Norden 2133 Comment
  CAS-BOT-BC181456  Stellaria obtusa John Thomas Howell 1943-7-14 18297 Nevada West side of Donner Pass near Norden 2133 Comment
  CAS-BOT-BC227592  Elymus elymoides John Thomas Howell 1943-7-25 18815 Placer West side of Donner Pass near Norden 2133 Comment
  CAS-BOT-BC314781  Helianthella californica var. nevadensis John Thomas Howell 1943-7-15 18356 Nevada West side of Donner Pass near Norden 2133 Comment
  CAS-BOT-BC28459  Carex lenticularis var. lipocarpa John Thomas Howell 1943-7-14 18321 Nevada West side of Donner Pass near Norden. 2133 Comment
  RSA433733  Plectritis ciliosa subsp. insignis J. T. Howell 1948-4-26 24289 Santa Clara West side of Pacheco Pass near summit. Comment
  CAS-BOT-BC213846  Elymus sierrae John Thomas Howell 1951-7-18 27916 Tulare West side, Franklin Pass, Mineral King and vicinity 3352 Comment
  RSA95587  Rhodiola integrifolia subsp. integrifolia J. T. Howell 1951-7-18 27923 Tulare West side, Franklin Pass, Mineral King and vicinity. 3354 Comment
  CAS-BOT-BC53037  Ceanothus sonomensis John Thomas Howell 1935-5-5 12609 Sonoma West slope of Hood Peak Range near summit of Triniti P.O. Road Comment
  CAS-BOT-BC80646  Cupressus goveniana John Thomas Howell 1953-5-7 28943 Monterey West slope of Huckleberry Hill, Monterey Peninsula Comment
  CAS-BOT-BC365071  Solidago velutina subsp. californica John Thomas Howell 1963-8-7 40097 Monterey Western edge of Priest Valley on road to Coalinga Comment
  CAS-BOT-BC108055  Salix exigua John Thomas Howell 1975-7-23 51403 Lassen Wet ground along Hwy. 395 between Johnstonville and Jonesville - Sierra Nevada 1280 Comment
  CAS-BOT-BC110982  Scirpus microcarpus John Thomas Howell 1963-9-4 40303 Monterey Wet ground along US Highway 101, 4 miles northeast of Prunedale Comment
  NY412848  Polygonum sawatchense J. T. Howell 1938-8-7 14298 Mono Whickey Creek 2133.6 Comment
  CAS-BOT-BC119987  Carex straminiformis John Thomas Howell 1951-7-21 28074 Tulare White Chief Region. 2895 Comment
  RSA88398  Castilleja pilosa subsp. jusselii J. T. Howell 1951-7-21 28073 Tulare White Chief Region. Mineral King and Vicinity. 2896 Comment
  RSA88520  Epilobium canum subsp. latifolium J. T. Howell 1951-7-17 27833 Tulare White Chief Trail. Mineral King and vicinity. 2591 Comment
  GH378834  Boechera paupercula J. T. Howell 1951-7-21 28072 Unknown White Chief region 2895 Comment
  CAS-BOT-BC384719  Achyronychia cooperi John Thomas Howell 1931-6-5 6655 Riverside 1 mile east of Whitewater Comment
  CAS-BOT-BC216893  Achnatherum occidentale John Thomas Howell 1947-7-25 23643 San Bernardino Whitewater cirque, Mount San Gorgonio, San Bernardino Mountains 2987 Comment
  CAS-BOT-BC115486  Carex utriculata John Thomas Howell 1949-7-27 25835 A Tulare Whitney Meadows 2956 Comment
  CAS-BOT-BC13271  Agoseris monticola J. T. Howell 1949-7-27 25832 Tulare Whitney Meadows 2956 Comment
  CAS-BOT-BC129299  Salix orestera John Thomas Howell 1958-5-24 33265 Inyo Whitney Portal - Sierra Nevada 2529 Comment
  CAS-BOT-BC268450  Eriogonum saxatile John Thomas Howell 1958-5-24 33259 Inyo Whitney Portal 2529 Comment
  GH384471  Salix scouleriana J. T. Howell 1958-5-24 33267 Unknown Whitney Portal 2529 Comment
  JEPS48075 Image available Mimulus John Thomas Howell 1958-5-24 33275 Inyo along Whitney Portal Road Comment
  CAS-BOT-BC264943  Eriogonum wrightii var. subscaposum John Thomas Howell 1964-10-23 40976 Inyo Whitney Portal Road, Sierra Nevada 2346 Comment
  CAS-BOT-BC270913  Eriogonum microthecum var. ambiguum John Thomas Howell 1963-8-21 40223 Inyo Whitney Portal Road, Sierra Nevada 2255 Comment
  CAS-BOT-BC297053  Erigeron breweri var. breweri John Thomas Howell 1963-8-21 40228 Inyo Whitney Portal Road, Sierra Nevada 2255 Comment
  CAS-BOT-BC185870  Vulpia octoflora var. hirtella John Thomas Howell 1958-5-24 33318 Inyo Whitney Portal road 1981 Comment
  CAS-BOT-BC189480  Cryptantha circumscissa var. circumscissa John Thomas Howell 1958-5-24 33281 Inyo Whitney Portal road 2346 Comment
  CAS-BOT-BC268451  Eriogonum saxatile John Thomas Howell 1963-8-20 40197 Inyo Whitney Portal road 2346 Comment
  CAS-BOT-BC81888  Ephedra viridis John Thomas Howell 1964-10-23 40993 Inyo on Whitney Portal road 1950 Comment
  CAS-BOT-BC81900  Ephedra viridis John Thomas Howell 1958-5-24 33336 Inyo Whitney Portal road 1920 Comment
  GH385954  Galium matthewsii J. T. Howell 1963-8-21 40222 Unknown Whitney Portal road 2255 Comment
  UCD51447  Achnatherum X bloomeri John Thomas Howell 1963-8-20 40185 Inyo Whitney Portal. 2545 Comment
  RSA40155  Cyperus difformis J. T. Howell 1944-7-18 19838 Colusa 3 miles west of Williams 30 Comment
  CAS-BOT-BC45857  Limnanthes bakeri John Thomas Howell 1954-4-24 n.s Mendocino 1.5 miles north of Willits Comment
  RSA97031  Limnanthes bakeri J. T. Howell 1954-4-24 s.n. Mendocino 1.5 miles north of Willits Comment
  CAS-BOT-BC284642  Hordeum brachyantherum subsp. brachyantherum John Thomas Howell 1943-7-18 18510 Nevada Willow Valley just west of Castle Peak Comment
  UC526150  Navarretia pubescens John Thomas Howell 1934-6-17 12246 Glenn Willows Comment
  CAS-BOT-BC341835  Lessingia nemaclada John Thomas Howell 1962-9-22 38695 Kern Wofford 792 Comment
  GH417234  Ericameria nauseosa var. ceruminosa J. T. Howell 1967-11-6 44177 Unknown 4.5 miles west of Wofford 1219 Comment
  CAS-BOT-BC85666  Cupressus arizonica John Thomas Howell 1967-11-6 44174 Kern 3 miles west of Wofford Heights, Greenhorn Mountains, Sierra Nevada 1066 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
  CAS-BOT-BC131531  Ericameria arborescens John Thomas Howell 1962-9-22 38712 Kern 4.5 miles west of Wofford, Greenhorn Mountains 1219 Comment
  CAS-BOT-BC131533  Ericameria arborescens John Thomas Howell 1962-9-22 38712 Kern 4.5 miles west of Wofford, Greenhorn Mountains 1219 Comment
  UCD101572  Eriogonum wrightii var. trachygonum John Thomas Howell 1962-7-7 38181 Kern Wofford. 792 Comment
  CAS-BOT-BC217553  Galium hypotrichium subsp. inyoense John Thomas Howell 1949-7-17 25371 Inyo Wonoga Peak 2743 Comment
  CAS-BOT-BC329029  Tetradymia canescens John Thomas Howell 1949-7-17 25396 Inyo Wonoga Peak 2743 Comment
  CAS-BOT-BC220695  Monardella viridis John Thomas Howell 1937-7-4 13060 Napa Wooden Valley Grade Comment
  CAS-BOT-BC114908  Carex whitneyi John Thomas Howell 1940-6-2 15578 Mariposa Yosemite Valley Comment
  CAS-BOT-BC400757  Asarum lemmonii John Thomas Howell 1940-6-2 15580 Mariposa Yosemite Valley Comment
  CAS-BOT-BC112335  Calliscirpus brachythrix John Thomas Howell 1944-8-15 20513 Tuolumne Young Lake Comment
  CAS-BOT-BC355587  Oreostemma alpigenum var. andersonii John Thomas Howell 1951-8-21 28268 Sierra Yuba Pass 2042 Comment
  CAS-BOT-BC166880  Epilobium canum subsp. latifolium John Thomas Howell 1940-7-28 15610 Fresno Zigzags east of Kings Canyon, Bubbs Creek Comment
  CAS-BOT-BC219969  Monardella breweri subsp. lanceolata John Thomas Howell 1940-8-10 16113 Fresno Zigzags east of Kings Canyon, Bubbs Creek Comment



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