The ITIS Logo The Search Results banner for the ITIS Data pages

Taxon author: J.T. Howell

ITIS records citing taxon author "J.T. Howell"
 
 Kingdom Plantae
  Achillea borealis var. arenicola (A. Heller) J.T. Howell -- not accepted
  Achillea borealis var. californica (Pollard) J.T. Howell -- not accepted
  Agrostis longiligula var. australis J.T. Howell -- not accepted -- longtongue bentgrass
  Ambrosia chamissonis var. bipinnatisecta (Less.) J.T. Howell -- not accepted
  Arctostaphylos edmundsii J.T. Howell -- accepted -- Little Sur manzanita
  Arctostaphylos glauca var. puberula J.T. Howell -- not accepted
  Arctostaphylos uva-ursi ssp. emundsii (J.T. Howell) Roof -- not accepted
  Arctostaphylos X repens (J.T. Howell) P.V. Wells -- accepted -- PMC manzanita
  Astragalus nuttallii (Torr. & A. Gray) J.T. Howell -- accepted -- Nuttall's milkvetch
  Astragalus nuttallii var. nuttallii (Torr. & A. Gray) J.T. Howell -- accepted -- Nuttall's milkvetch
  Baeria bakeri J.T. Howell -- not accepted
  Baeria macrantha var. bakeri (J.T. Howell) D.D. Keck -- not accepted
  Baeria macrantha var. thalassophila J.T. Howell -- not accepted
  Blennosperma nanum var. robustum J.T. Howell -- accepted -- common stickyseed
  Calamagrostis ophitidis (J.T. Howell) Nygren -- accepted -- serpentine reedgrass
  Calamagrostis purpurascens var. ophitidis J.T. Howell -- not accepted
  Calochortus superbus Purdy ex J.T. Howell -- accepted -- yellow mariposa
  Calyptridium parryi ssp. nevadense (J.T. Howell) Munz -- not accepted
  Calyptridium parryi var. arizonicum J.T. Howell -- not accepted
  Calyptridium parryi var. nevadense J.T. Howell -- not accepted
  Camassia quamash var. linearis (Gould) J.T. Howell -- not accepted
  Campanula angustiflora var. exilis J.T. Howell -- not accepted
  Carex jepsonii J.T. Howell -- not accepted
  Carex specuicola J.T. Howell -- accepted -- Navajo sedge
  Carex tompkinsii J.T. Howell -- accepted -- Thompkins' sedge
  Castilleja leschkeana J.T. Howell -- not accepted -- Point Reyes paintbrush
  Caulanthus amplexicaulis var. barbarae (J.T. Howell) Munz -- not accepted -- claspingleaf wild cabbage, Santa Barbara jewelflower
  Ceanothus confusus J.T. Howell -- accepted -- Rincon ceanothus, Rincon Ridge ceanothus
  Ceanothus cuneatus ssp. sonomensis (J.T. Howell) C.L. Schmidt -- not accepted -- Sonoma ceanothus
  Ceanothus cuneatus var. dubius J.T. Howell -- not accepted
  Ceanothus divergens ssp. confusus (J.T. Howell) Abrams -- not accepted
  Ceanothus gloriosus J.T. Howell -- accepted -- Point Reyes ceanothus
  Ceanothus gloriosus ssp. exaltatus (J.T. Howell) C.L. Schmidt -- not accepted -- Point Reyes ceanothus
  Ceanothus gloriosus ssp. gloriosus J.T. Howell -- not accepted -- Point Reyes creeper
  Ceanothus gloriosus ssp. porrectus (J.T. Howell) C.L. Schmidt -- not accepted -- Point Reyes creeper
  Ceanothus gloriosus var. exaltatus J.T. Howell -- accepted -- Point Reyes ceanothus
  Ceanothus gloriosus var. gloriosus J.T. Howell -- accepted -- Point Reyes ceanothus
  Ceanothus gloriosus var. porrectus J.T. Howell -- accepted -- Mount Vision ceanothus, Mt. Vision ceanothus
  Ceanothus jepsonii ssp. albiflorus (J.T. Howell) C.L. Schmidt -- not accepted -- Jepson ceanothus
  Ceanothus jepsonii var. albiflorus J.T. Howell -- accepted -- Jepson ceanothus
  Ceanothus prostratus ssp. confusus (J.T. Howell) C.L. Schmidt -- not accepted -- squawcarpet
  Ceanothus sonomensis J.T. Howell -- accepted -- Sonoma ceanothus
  Centrostegia thurberi var. macrotheca (J.T. Howell) Goodman -- not accepted
  Ceratoides lanata (Pursh) J.T. Howell -- not accepted
  Ceratoides lanata var. subspinosa (Rydb.) J.T. Howell -- not accepted
  Chenopodium ambrosioides var. vagans (Standl.) J.T. Howell -- not accepted
  Chenopodium macrospermum var. farinosum (S. Watson) J.T. Howell -- not accepted -- largeseed goosefoot
  Chorizanthe thurberi var. macrotheca J.T. Howell -- not accepted
  Cirsium callilepis var. oregonense (Petr.) J.T. Howell -- not accepted
  Cirsium callilepis var. pseudocarlinoides (Petr.) J.T. Howell -- not accepted
  Cirsium ciliolatum (L.F. Hend.) J.T. Howell -- accepted -- Ashland thistle
  Cirsium cymosum (Greene) J.T. Howell -- accepted -- peregrine thistle
  Cirsium cymosum var. cymosum (Greene) J.T. Howell -- accepted -- peregrine thistle
  Cirsium douglasii var. canescens (Petr.) J.T. Howell -- not accepted
  Cirsium fontinale var. obispoense J.T. Howell -- accepted -- Chorro Creek bog thistle
  Cirsium hydrophilum var. vaseyi (A. Gray) J.T. Howell -- accepted -- Vasey's thistle
  Cirsium pastoris J.T. Howell -- not accepted -- snowy thistle
  Cirsium proteanum J.T. Howell -- not accepted
  Cistanthe parryi var. arizonica (J.T. Howell) Kartesz & Gandhi -- not accepted -- Arizona pussypaws
  Cistanthe parryi var. nevadensis (J.T. Howell) Kartesz & Gandhi -- not accepted -- Nevada pussypaws
  Convolvulus occidentalis ssp. saxicola (Eastw.) J.T. Howell -- not accepted
  Convolvulus occidentalis var. purpuratus (Greene) J.T. Howell -- not accepted
  Convolvulus occidentalis var. saxicola (Eastw.) J.T. Howell -- not accepted
  Convolvulus occidentalis var. solanensis (Jeps.) J.T. Howell -- not accepted
  Cordylanthus nidularius J.T. Howell -- accepted -- Mount Diablo bird's-beak
  Cryptantha circumscissa ssp. rosulata (J.T. Howell) Mathew & P.H. Raven -- not accepted
  Cryptantha circumscissa var. rosulata J.T. Howell -- accepted -- cushion cryptantha
  Dedeckera Reveal & J.T. Howell -- accepted -- July gold, Mary's grass
  Dedeckera eurekensis Reveal & J.T. Howell -- accepted -- July gold
  Eleocharis quinqueflora var. suksdorfiana (Beauverd) J.T. Howell -- not accepted
  Ericameria ophitidis (J.T. Howell) G.L. Nesom -- accepted -- serpentine goldenbush
  Erigeron linearis var. elegantulus (Greene) J.T. Howell -- not accepted
  Eriogonum ampullaceum J.T. Howell -- accepted -- Mono buckwheat
  Eriogonum apricum J.T. Howell -- accepted -- Ione buckwheat
  Eriogonum apricum var. apricum J.T. Howell -- accepted -- Ione buckwheat
  Eriogonum argillosum J.T. Howell -- accepted -- clay buckwheat
  Eriogonum breedlovei (J.T. Howell) Reveal -- accepted -- Paiute buckwheat, Piute buckwheat
  Eriogonum breedlovei var. breedlovei (J.T. Howell) Reveal -- accepted -- Paiute buckwheat, Piute buckwheat
  Eriogonum breedlovei var. shevockii J.T. Howell -- accepted -- Needle's buckwheat, The Needles buckwheat
  Eriogonum butterworthianum J.T. Howell -- accepted -- Butterworth's buckwheat
  Eriogonum carneum (J.T. Howell) Reveal -- not accepted
  Eriogonum eastwoodianum J.T. Howell -- accepted -- Eastwood's buckwheat
  Eriogonum eremicola J.T. Howell & Reveal -- accepted -- Telescope Peak buckwheat, Wild Rose Canyon buckwheat
  Eriogonum esmeraldense var. toiyabense J.T. Howell -- accepted -- Toiyabe buckwheat
  Eriogonum glandulosum var. carneum J.T. Howell -- not accepted
  Eriogonum hirtellum J.T. Howell & Bacig. -- accepted -- Klamath Mountain buckwheat, Klamath Mountain wild buckwheat
  Eriogonum mohavense ssp. ampullaceum (J.T. Howell) S. Stokes -- not accepted
  Eriogonum nudum var. westonii (S. Stokes) J.T. Howell -- accepted -- Weston's buckwheat
  Eriogonum ochrocephalum var. breedlovei J.T. Howell -- not accepted
  Eriogonum ochrocephalum var. gracilipes (S. Watson) J.T. Howell -- not accepted
  Eriogonum ovalifolium var. eximium (Tidestr.) J.T. Howell -- accepted -- brownmargin buckwheat, cushion buckwheat
  Eriogonum parvifolium ssp. lucidum J.T. Howell ex S. Stokes -- not accepted
  Eriogonum parvifolium var. lucidum (J.T. Howell ex S. Stokes) Reveal -- not accepted -- Point Lobos wild buckwheat
  Eriogonum racemosum var. coccineum (J.T. Howell) S.L. Welsh -- not accepted
  Eriogonum racemosum var. zionis (J.T. Howell) S.L. Welsh -- not accepted
  Eriogonum ripleyi J.T. Howell -- accepted -- Fraziers Well buckwheat, Ripley wild-buckwheat
  Eriogonum spergulinum var. pratense (S. Stokes) J.T. Howell -- accepted -- spurry buckwheat
  Eriogonum spergulinum var. reddingianum (M.E. Jones) J.T. Howell -- accepted -- Redding buckwheat
  Eriogonum temblorense J.T. Howell & Twisselm. -- accepted -- Temblor buckwheat
  Eriogonum ternatum var. congdonii (S. Stokes) J.T. Howell -- not accepted
  Eriogonum twisselmannii (J.T. Howell) Reveal -- accepted -- Twisselmann's buckwheat
  Eriogonum vestitum J.T. Howell -- accepted -- Idria buckwheat
  Eriogonum viscidulum J.T. Howell -- accepted -- clammy buckwheat, sticky buckwheat
  Eriogonum wrightii var. olanchense (J.T. Howell) Reveal -- accepted -- Olancha Peak buckwheat
  Eriogonum zionis J.T. Howell -- accepted -- Zion buckwheat, Zion wild buckwheat
  Eriogonum zionis var. coccineum J.T. Howell -- accepted -- Zion buckwheat
  Eriogonum zionis var. zionis J.T. Howell -- accepted -- Zion buckwheat
  Eriophyllum lanatum var. aphanactis J.T. Howell -- not accepted -- common woolly sunflower
  Erodium obtusiplicatum (Maire, Weiller & Wilczek) J.T. Howell -- not accepted
  Erysimum capitatum var. stellatum (J.T. Howell) Twisselm. -- not accepted
  Erythronium grandiflorum ssp. pusaterii Munz & J.T. Howell -- not accepted -- Kaweah fawn lily
  Erythronium pusaterii (Munz & J.T. Howell) Shevock, Bartel & G.A. Allen -- accepted -- Kaweah Lakes fawnlily
  Eschscholzia frutescens (Greene) J.T. Howell -- not accepted
  Euphorbia bisulcata J.T. Howell -- not accepted
  Euphorbia guadalupensis J.T. Howell -- not accepted
  Euphorbia ocellata var. kirbyi J.T. Howell -- not accepted
  Euphorbia patellifera J.T. Howell -- not accepted
  Euphorbia pseudoserpyllifolia f. typica J.T. Howell -- not accepted
  Euphorbia pseudoserpyllifolia f. villosa J.T. Howell -- not accepted
  Euphorbia vallis-mortae (Millsp.) J.T. Howell -- accepted -- Death Valley sandmat
  Festuca ovina var. minutiflora (Rydb.) J.T. Howell -- not accepted
  Galium angustifolium ssp. foliosum (Hilend & J.T. Howell) Dempster & Stebbins -- accepted -- narrowleaf bedstraw
  Galium angustifolium var. bernardinum Hilend & J.T. Howell -- not accepted
  Galium angustifolium var. diffusum Hilend & J.T. Howell -- not accepted
  Galium angustifolium var. foliosum Hilend & J.T. Howell -- not accepted
  Galium angustifolium var. siccatum (W. Wight) Hilend & J.T. Howell -- not accepted
  Galium angustifolium var. typicum Hilend & J.T. Howell -- not accepted
  Galium californicum var. typicum Hilend & J.T. Howell -- not accepted
  Galium collomae J.T. Howell -- not accepted
  Galium collomiae J.T. Howell -- accepted -- Fossil Hill Creek bedstraw
  Galium hilendiae ssp. carneum (Hilend & J.T. Howell) Dempster & Ehrend. -- accepted -- Hilend's bedstraw, Panamint Mountains bedstraw
  Galium hypotrichium ssp. subalpinum (Hilend & J.T. Howell) Ehrend. -- accepted -- subalpine bedstraw
  Galium jepsonii Hilend & J.T. Howell -- accepted -- Jepson's bedstraw
  Galium multiflorum var. subalpinum (Hilend & J.T. Howell) Cronquist -- not accepted
  Galium munzii Hilend & J.T. Howell -- accepted -- Munz's bedstraw
  Galium munzii ssp. munzii Hilend & J.T. Howell -- accepted -- Munz's bedstraw
  Galium munzii var. carneum Hilend & J.T. Howell -- not accepted
  Galium munzii var. minzii Hilend & J.T. Howell -- not accepted
  Galium munzii var. subalpinum Hilend & J.T. Howell -- not accepted
  Galium parishii Hilend & J.T. Howell -- accepted -- Parish's bedstraw
  Galium stellatum ssp. eremicum (Hilend & J.T. Howell) Ehrend. -- accepted -- desert bedstraw, starry bedstraw
  Galium stellatum var. eremicum Hilend & J.T. Howell -- not accepted
  Grindelia camporum var. bracteosa (J.T. Howell) M.A. Lane -- not accepted -- bract gumweed
  Grindelia robusta var. bracteosa (J.T. Howell) D.D. Keck -- not accepted
  Hackelia amethystima J.T. Howell -- not accepted
  Hackelia amethystina J.T. Howell -- accepted -- amethyst stickseed
  Haplopappus bloomeri var. ophitidis J.T. Howell -- not accepted
  Haplopappus ophitidis (J.T. Howell) D.D. Keck -- not accepted
  Haplopappus peirsonii (D.D. Keck) J.T. Howell -- not accepted
  Haplopappus whitneyi ssp. discoideus (J.T. Howell) D.D. Keck -- not accepted
  Hazardia whitneyi var. discoidea (J.T. Howell) W.D. Clark -- accepted -- Whitney's bristleweed
  Horkelia tularensis (J.T. Howell) Munz -- accepted -- Kern Plateau horkelia, Tulare horkelia
  Ivesia aperta (J.T. Howell) Munz -- accepted -- Sierra Valley ivesia, Sierra Valley mousetail
  Ivesia aperta var. aperta (J.T. Howell) Munz -- accepted -- Sierra Valley ivesia, Sierra Valley mousetail
  Ivesia arizonica (Eastw. ex J.T. Howell) Ertter -- accepted -- rock whitefeather, rock-whitefeather
  Ivesia arizonica var. arizonica (Eastw. ex J.T. Howell) Ertter -- accepted -- Arizona whitefeather
  Ivesia patellifera (J.T. Howell) Ertter -- accepted -- Kingston Mountain mousetail, Kingston Mountains cinquefoil
  Juncus bufonius var. cogdonii (S. Watson) J.T. Howell -- not accepted
  Juncus bufonius var. congdonii (S. Watson) J.T. Howell -- not accepted
  Lasthenia californica ssp. bakeri (J.T. Howell) R. Chan -- accepted -- Baker's goldfields
  Lasthenia macrantha ssp. bakeri (J.T. Howell) Ornduff -- not accepted -- Baker's goldfields
  Lessingia germanorum var. glandulifera (A. Gray) J.T. Howell -- not accepted
  Lessingia germanorum var. lemmonii (A. Gray) J.T. Howell -- not accepted
  Lessingia germanorum var. parvula (Greene) J.T. Howell -- not accepted
  Lessingia germanorum var. pectinata (Greene) J.T. Howell -- not accepted
  Lessingia germanorum var. peirsonii J.T. Howell -- not accepted
  Lessingia germanorum var. ramulosissima (A. Nelson) J.T. Howell -- not accepted
  Lessingia germanorum var. tenuis (A. Gray) J.T. Howell -- not accepted
  Lessingia germanorum var. tomentosa (Greene) J.T. Howell -- not accepted
  Lessingia glandulifera var. peirsonii (J.T. Howell) Markos -- accepted -- Peirson's lessingia
  Lessingia hololeuca var. arachnoidea (Greene) J.T. Howell -- not accepted
  Lessingia lemmonii var. peirsonii (J.T. Howell) Ferris -- not accepted -- Peirson's lessingia
  Lessingia nemaclada var. albiflora (Eastw.) J.T. Howell -- not accepted -- slenderstem lessingia
  Lessingia nemaclada var. mendocina (Greene) J.T. Howell -- not accepted -- Mendocino lessingia
  Lessingia pectinata var. tenuipes (J.T. Howell) Markos -- accepted
  Lessingia ramulosa var. micradenia (Greene) J.T. Howell -- not accepted
  Lessingia virgata var. glomerata (Greene) J.T. Howell -- not accepted -- wand lessingia
  Lewisia cantelovii J.T. Howell -- accepted -- Cantelow's lewisia
  Lewisia cantelowii J.T. Howell -- not accepted -- Cantelon's lewisia
  Limnanthes bakeri J.T. Howell -- accepted -- Baker's meadowfoam
  Linanthus pygmaeus (Brand) J.T. Howell -- not accepted -- pygmy linanthus
  Linanthus pygmaeus ssp. pygmaeus (Brand) J.T. Howell -- not accepted -- pygmy linanthus
  Lupinus douglasii var. fallax (Greene) J.T. Howell -- not accepted
  Melica geyeri var. aristulata J.T. Howell -- accepted -- Geyer's oniongrass
  Microseris paludosa (Greene) J.T. Howell -- accepted -- marsh silverpuffs
  Mimulus cleistogamus J.T. Howell -- accepted -- selfing monkeyflower
  Montia spathulata var. rosulata (Eastw.) J.T. Howell -- not accepted
  Nama retrorsa J.T. Howell -- accepted -- betatakin fiddleleaf
  Nama retrorsum J.T. Howell -- not accepted -- betatakin fiddleleaf
  Navarretia nigelliformis ssp. radians (J.T. Howell) A.G. Day -- accepted -- adobe navarretia
  Navarretia nigelliformis var. radians J.T. Howell -- not accepted
  Nemacladus twisselmannii J.T. Howell -- accepted -- Twisselmann's nemacladus, Twisselmann's threadplant
  Opuntia echios J.T. Howell -- not accepted
  Opuntia megasperma J.T. Howell -- not accepted
  Opuntia saxicola J.T. Howell -- not accepted
  Orthocarpus densiflorus var. noctuinus (Eastw.) J.T. Howell -- not accepted
  Orthocarpus faucibarbatus var. albidus (D.D. Keck) J.T. Howell -- not accepted
  Packera eurycephala var. lewisrosei (J.T. Howell) J.F. Bain -- accepted -- Lewis' groundsel
  Penstemon papillatus J.T. Howell -- accepted -- Inyo beardtongue, Inyo penstemon
  Pentagramma triangularis ssp. semipallida (J.T. Howell) Yatsk., Windham & E. Wollenw. -- accepted -- goldback fern
  Phacelia adenophora J.T. Howell -- accepted -- glandbearing phacelia, glandular yellow phacelia
  Phacelia affinis var. patens J.T. Howell -- not accepted
  Phacelia austromontana J.T. Howell -- accepted -- southern mountain phacelia, Southern Sierra phacelia
  Phacelia barnebyana J.T. Howell -- accepted -- Barneby's phacelia
  Phacelia cicutaria var. heliophila (J.F. Macbr.) J.T. Howell -- not accepted
  Phacelia cicutaria var. hispida (A. Gray) J.T. Howell -- accepted -- caterpillar phacelia
  Phacelia cicutaria var. hubbyi (J.F. Macbr.) J.T. Howell -- accepted -- caterpillar phacelia
  Phacelia ciliata var. opaca J.T. Howell -- accepted -- Great Valley phacelia, Merced phacelia
  Phacelia dalesiana J.T. Howell -- accepted -- Scott Mountain phacelia, Trinity phacelia
  Phacelia demissa var. heterotricha J.T. Howell -- not accepted
  Phacelia demissa var. typica J.T. Howell -- not accepted
  Phacelia divaricata var. continentis (J.T. Howell) Munz -- not accepted
  Phacelia egena (Greene ex Brand) Greene ex J.T. Howell -- accepted -- Kaweah River phacelia, Kaweah river scorpion-weed
  Phacelia eisenii var. brandegeeana J.T. Howell -- not accepted
  Phacelia glaberrima (Torr. ex S. Watson) J.T. Howell -- accepted -- Reese River phacelia, southwestern phacelia
  Phacelia greenei J.T. Howell -- accepted -- Scott Valley phacelia
  Phacelia humilis var. dudleyi J.T. Howell -- accepted -- Dudley's phacelia
  Phacelia indecora J.T. Howell -- accepted -- drab phacelia
  Phacelia insularis var. continentis J.T. Howell -- accepted -- North Coast phacelia, northcoast phacelia
  Phacelia inundata J.T. Howell -- accepted -- playa phacelia, playa yellow phacelia
  Phacelia inyoensis (J.F. Macbr.) J.T. Howell -- accepted -- Inyo phacelia
  Phacelia ivesiana var. pediculoides J.T. Howell -- accepted -- Ives' phacelia, louse phacelia, lousewort scorpion-weed
  Phacelia ivesiana var. typica J.T. Howell -- not accepted
  Phacelia laxiflora J.T. Howell -- accepted -- dozing phacelia, dozing scorpion-weed, nodding phacelia
  Phacelia leonis J.T. Howell -- accepted -- Siskiyou phacelia
  Phacelia lutea (Hook. & Arn.) J.T. Howell -- accepted -- yellow phacelia
  Phacelia lutea var. lutea (Hook. & Arn.) J.T. Howell -- accepted -- yellow phacelia
  Phacelia lutea var. purpurascens J.T. Howell -- not accepted
  Phacelia lutea var. submutica (J.T. Howell) Cronquist -- not accepted
  Phacelia nevadensis J.T. Howell -- not accepted
  Phacelia peckii J.T. Howell -- accepted -- Peck's phacelia
  Phacelia pediculoides (J.T. Howell) Constance -- not accepted
  Phacelia peirsoniana J.T. Howell -- accepted -- handsome phacelia, trail phacelia
  Phacelia perityloides var. laxiflora (J.T. Howell) Cronquist -- not accepted
  Phacelia pulchella var. gooddingii (Brand) J.T. Howell -- accepted -- Goodding's phacelia
  Phacelia pulchella var. sabulonum J.T. Howell -- accepted -- beautiful phacelia
  Phacelia pulchella var. typica J.T. Howell -- not accepted
  Phacelia quickii J.T. Howell -- accepted -- Quick's phacelia
  Phacelia salima (A. Nelson) J.T. Howell -- not accepted
  Phacelia salina (A. Nelson) J.T. Howell -- accepted -- alkaline phacelia, Bitter Creek phacelia
  Phacelia scopulina (A. Nelson) J.T. Howell -- accepted -- Debeque phacelia, Debeque scorpion-weed, prostrate phacelia
  Phacelia scopulina var. scopulina (A. Nelson) J.T. Howell -- accepted -- Debeque phacelia
  Phacelia scopulina var. submutica (J.T. Howell) Halse -- accepted -- Debeque phacelia
  Phacelia suaveolens var. keckii (Munz & I.M. Johnst.) J.T. Howell -- not accepted
  Phacelia submutica J.T. Howell -- not accepted -- DeBeque phacelia
  Phacelia tetramera J.T. Howell -- accepted -- fourpart phacelia
  Physocarpus alternans (M.E. Jones) J.T. Howell -- accepted -- dwarf ninebark
  Physocarpus alternans ssp. alternans (M.E. Jones) J.T. Howell -- not accepted -- dwarf ninebark
  Physocarpus alternans ssp. annulatus J.T. Howell -- not accepted -- dwarf ninebark
  Physocarpus alternans ssp. panamintensis J.T. Howell -- not accepted -- dwarf ninebark
  Pityrogramma semipallida J.T. Howell -- not accepted
  Pityrogramma triangularis var. semipallida J.T. Howell -- not accepted
  Plagiobothrys uncinatus J.T. Howell -- accepted -- Salinas Valley popcornflower
  Pleuropogon hooverianus (L.D. Benson) J.T. Howell -- accepted -- North Coast semaphoregrass
  Poa sierrae J.T. Howell -- accepted -- Sierra bluegrass
  Pogogyne abramsii J.T. Howell -- accepted -- San Diego mesamint, San Diego pogogyne
  Pogogyne clareana J.T. Howell -- accepted -- Santa Lucia mint, Santa Lucia pogogyne
  Pogogyne douglasii ssp. minor J.T. Howell -- not accepted -- Douglas' mesamint
  Pogogyne douglasii ssp. parviflora (Benth.) J.T. Howell -- not accepted -- Douglas' mesamint
  Potentilla aperta J.T. Howell -- not accepted
  Potentilla baileyi var. setosa (S. Watson) J.T. Howell -- not accepted
  Potentilla congesta var. nemorosa (D.D. Keck) J.T. Howell -- not accepted
  Potentilla douglasii var. parviflora (Nutt. ex Hook. & Arn.) J.T. Howell -- not accepted -- pinewoods horkelia
  Potentilla egedii var. grandis (Torr. & A. Gray) J.T. Howell -- not accepted
  Potentilla hendersonii (J.T. Howell) J.T. Howell -- not accepted
  Potentilla lindleyi var. puberula (Rydb.) J.T. Howell -- not accepted
  Potentilla lindleyi var. sericea (A. Gray) J.T. Howell -- not accepted
  Potentilla lycopodioides (A. Gray) Baill. ex J.T. Howell -- not accepted
  Potentilla lycopodioides var. megalopetala (Rydb.) J.T. Howell -- not accepted
  Potentilla lycopodioides var. scandularis (Rydb.) J.T. Howell -- not accepted
  Potentilla marinensis (Elmer) J.T. Howell -- not accepted
  Potentilla osterhoutii (A. Nelson) J.T. Howell -- not accepted
  Potentilla osterhoutii var. saxosa (Brandegee) J.T. Howell -- not accepted
  Potentilla patellifera J.T. Howell -- not accepted
  Potentilla sericoleuca (Rydb.) J.T. Howell -- not accepted
  Potentilla tilingii var. flavescens (Rydb.) J.T. Howell -- not accepted
  Potentilla tularensis J.T. Howell -- not accepted
  Potentilla tweedyi (Rydb.) J.T. Howell -- not accepted
  Purpusia arizonica Eastw. ex J.T. Howell -- not accepted
  Quercus agrifolia var. oxyadenia (Torr.) J.T. Howell -- not accepted -- coastal live oak
  Rubus spectabilis var. franciscanus (Rydb.) J.T. Howell -- not accepted -- salmonberry
  Rubus ursinus ssp. ursinus var. sirbenus (L.H. Bailey) J.T. Howell -- not accepted -- California blackberry
  Rubus ursinus var. eastwoodianus (Rydb.) J.T. Howell -- not accepted
  Rubus ursinus var. sirbenus (L.H. Bailey) J.T. Howell -- not accepted -- California blackberry
  Rumex occidentalis var. procerus (Greene) J.T. Howell -- not accepted
  Rumex salicifolius var. crassus (Rech. f.) J.T. Howell -- not accepted -- willow dock
  Salix congesta (Bebb ex Rothr.) J.T. Howell -- not accepted
  Senecio eurycephalus var. lewisrosei (J.T. Howell) T.M. Barkley -- not accepted -- Lewis' groundsel
  Senecio foetidus J.T. Howell -- not accepted
  Senecio lewisrosei J.T. Howell -- not accepted
  Sidalcea stipularis J.T. Howell & G.H. True -- accepted -- Scadden Flat checkerbloom, Scadden Flat checkermallow
  Stenogonum flexum (M.E. Jones) Reveal & J.T. Howell -- accepted -- bent two-whorl buckwheat, bent twowhorl buckwheat
  Streptanthella longirostris var. derelicta J.T. Howell -- not accepted
  Streptanthus amplexicaulis var. barbarae J.T. Howell -- not accepted
  Streptanthus cordatus var. piutensis J.T. Howell -- accepted -- heartleaf twistflower, Piute Mountains jewelflower
  Streptanthus farnsworthianus J.T. Howell -- accepted -- Evalyn's jewelflower, Farnsworth's jewelflower
  Streptanthus fenestratus (Greene) J.T. Howell -- accepted -- Tehipite Valley jewelflower
  Stylocline amphibola (A. Gray) J.T. Howell -- not accepted
  Stylocline amphiloba (A. Gray) J.T. Howell -- not accepted
  Thermopsis macrophylla var. agnina J.T. Howell -- not accepted -- Santa Barbara false-lupine
  Triglochin concinna var. debilis (M.E. Jones) J.T. Howell -- not accepted
  Triglochin concinnum var. debile (M.E. Jones) J.T. Howell -- not accepted
  Trisetum spicatum var. projectum (Louis-Marie) J.T. Howell -- not accepted
  Viola purpurea var. integrifolia (M.S. Baker & J.C. Clausen) J.T. Howell -- accepted -- goosefoot violet
  Viola purpurea var. mohavensis (M.S. Baker & J.C. Clausen) J.T. Howell -- accepted -- goosefoot violet
   

A gray bar