Aizoaceae GH: 01860010  Cypselea humifusa  Turpin USA: California Lake Lagunitas, Marin County   J. T. Howell 15327 1939-8-27 
 Amaranthaceae GH: 01928760  Amaranthus blitoides
Amaranthaceae GH: 01928760  Amaranthus blitoides  S. Watson USA: California San Antonio Creek   J. T. Howell 15351 1939-9-3 
 GH: 01928989  Amaranthus deflexus
 GH: 01928989  Amaranthus deflexus  Linnaeus USA: California Sausalito   J. T. Howell  1939-11-5 
 GH: 01929294  Amaranthus powellii
 GH: 01929294  Amaranthus powellii  S. Watson USA: California Near Novato   J. T. Howell 15341 1939-9-3 
 Asteraceae GH: 01110028  Achillea borealis
Asteraceae GH: 01110028  Achillea borealis  Bongard USA: California Mt. Theater to Bootjack   J. T. Howell  1939-7-16 
 GH: 02141419  Agoseris grandiflora
 GH: 02141419  Agoseris grandiflora  (Nuttall) Greene USA: California [data not captured]   J. T. Howell 14660 1939-5-14 
 GH: 02141662  Agoseris hirsuta
 GH: 02141662  Agoseris hirsuta  (Hooker) Greene USA: California [data not captured]   J. T. Howell 14692 1939-5-21 
 GH: 02141695  Agoseris monticola
 GH: 02141695  Agoseris monticola  Greene USA: California [data not captured]   J. T. Howell 15187 1939-8-8 
 GH: 02172198  Carduus tenuiflorus
 GH: 02172198  Carduus tenuiflorus  Curtis USA: California [data not captured]   J. T. Howell 14783 1939-6-18 
 GH: 00427939  Cirsium andrewsii
 GH: 00427939  Cirsium andrewsii  (A. Gray) Jepson USA: California Elk Valley, east of Tennessee Cove    J. T. Howell 14818 1939-7-2 
 GH: 00427941  Cirsium andrewsii
 GH: 00427941  Cirsium andrewsii  (A. Gray) Jepson USA: California Point Reyes Lighthouse    J. T. Howell 14719 1939-6-4 
 GH: 00427942  Cirsium andrewsii
 GH: 00427942  Cirsium andrewsii  (A. Gray) Jepson USA: California Elk Valley, east of Tennessee Cove    J. T. Howell 14818 1939-7-2 
 GH: 00427971  Cirsium fontinale
 GH: 00427971  Cirsium fontinale  (Greene) Jepson USA: California Crystal Springs Lake   J. T. Howell 14743 1939-6-16 
 GH: 02021466  Cirsium occidentale
 GH: 02021466  Cirsium occidentale  (Nuttall) Jepson USA: California [data not captured]   J. T. Howell 14765 1939-6-16 
 GH: 02021703  Cirsium quercetorum
 GH: 02021703  Cirsium quercetorum  (A. Gray) Jepson USA: California [data not captured]   J. T. Howell 14819 1939-7-2 
 GH: 02021702  Cirsium quercetorum
 GH: 02021702  Cirsium quercetorum  (A. Gray) Jepson USA: California [data not captured]   J. T. Howell 14718 1939-6-4 
 GH: 02021701  Cirsium quercetorum
 GH: 02021701  Cirsium quercetorum  (A. Gray) Jepson USA: California [data not captured]   J. T. Howell 14739 1939-6-16 
 GH: 02021716  Cirsium remotifolium
 GH: 02021716  Cirsium remotifolium  (Hooker) de Candolle USA: California [data not captured]   J. T. Howell 15033 1939-8-4 
 GH: 02021010  Cirsium sp.
 GH: 02021010  Cirsium sp.   USA: California [data not captured]   J. T. Howell 14746 1939-6-16 
 GH: 02021014  Cirsium sp.
 GH: 02021014  Cirsium sp.   USA: California [data not captured]   J. T. Howell 14796 1939-6-25 
 GH: 02022118  Cirsium sp.
 GH: 02022118  Cirsium sp.   USA: California [data not captured]   J. T. Howell 14721 1939-6-4 
 GH: 02021943  Cirsium venustum
 GH: 02021943  Cirsium venustum  Porta USA: California [data not captured]   J. T. Howell 14747 1939-6-16 
 GH: 00427067  Eriophyllum lanatum arachnoideum
 GH: 00427067  Eriophyllum lanatum arachnoideum (Fischer, C. A. Meyer & Avé-Lallemant) Jepson USA: California Between Big Lagoon and Miur Woods    J. T. Howell  1939-7-2 
 GH: 00417601  Grindelia hirsutula  Hooker & Arnott USA: California South end of Tiburon Peninsula    J. T. Howell 14697 1939-5-21 
 GH: 00008710  Haplopappus whitneyi discoidea
 GH: 00008710  Haplopappus whitneyi discoidea J. T. Howell USA: California Shackleford Creek Trail south of Sky High Va...  J. T. Howell 15236 1939-8-9 
 Betulaceae A: 00401399  Alnus sinuata
Betulaceae A: 00401399  Alnus sinuata  (Regel) Rydberg USA: California Spirit Lake, Marble Mts.   J. T. Howell 14956 1939-8-3 
 A: 00401399  Alnus viridis sinuata
 A: 00401399  Alnus viridis sinuata (Regel) Á. Löve & D. Löve USA: California Spirit Lake, Marble Mts.   J. T. Howell 14956 1939-8-3 
 Bombacaceae A: 00422597  Fremontodendron californicum
Bombacaceae A: 00422597  Fremontodendron californicum  (Torrey) Coville USA: California Near head of Hunting Creek, northwest of Kno...  J. T. Howell 14653 1939-5-7 
Brassicaceae GH: 01181526  Boechera acutina  (Greene) Windham & Al-Shehbaz USA: California Spirit Lake, Marble Mts.   J. T. Howell 14945 1939-8-2 
 GH: 00932114  Boechera divaricarpa
 GH: 00932114  Boechera divaricarpa  (A. Nelson) A. Löve & D. Löve USA: California Spirit Lake. Marble Mts.   J. T. Howell 14952 1939-8-3 
 GH: 00960780  Boechera retrofracta
 GH: 00960780  Boechera retrofracta  (Graham) A. Löve & D. Löve USA: California Spirit Lake, Marble Mts.   J. T. Howell 14913 1939-8 
 GH: 00983113  Cardamine cordifolia
 GH: 00983113  Cardamine cordifolia  A. Gray USA: California Spirit Lake, Marble Mts.   J. T. Howell 14993 1939-8-3 
 GH: 00387510  Erysimum teretifolium
 GH: 00387510  Erysimum teretifolium  Eastwood USA: California Ben Lomond   J. T. Howell 14760 1939-6-16 
 GH: 01540646  Hirschfeldia incana
 GH: 01540646  Hirschfeldia incana  (Linnaeus) Lagreze-Fossat USA: California [data not captured]   J. T. Howell 14846 1939-7-2 
 GH: 00379960  Streptanthus batrachopus
 GH: 00379960  Streptanthus batrachopus  J. L. Morrison USA: California east of Collier Spring, Mt. Tamalpais   J. T. Howell 14681 1939-5-14 
 Caprifoliaceae A: 00386234  Sambucus racemosa
Caprifoliaceae A: 00386234  Sambucus racemosa  Linnaeus USA: California Spirit Lake, Marble Mts.   J. T. Howell 15011 1939-8-3 
 A: 00386347  Symphoricarpos mollis
 A: 00386347  Symphoricarpos mollis  Nuttall ex Torrey & A. Gray USA: California Spirit Lake, Marble Mts.   J. T. Howell 14947 1939-8-2 
 Celastraceae A: 00378505  Paxistima myrsinites
Celastraceae A: 00378505  Paxistima myrsinites  (Pursh) Rafinesque USA: California Near Spirit Lake, Marble Mts.   J. T. Howell 15056 1939-8-4 
 Chenopodiaceae GH: 01782069  Chenopodium album missouriense
Chenopodiaceae GH: 01782069  Chenopodium album missouriense (Aellen) Bassett & Crompton USA: California [data not captured]   J. T. Howell 15380 1939-10-24 
 Cornaceae A: 00385385  Cornus glabrata
Cornaceae A: 00385385  Cornus glabrata  Bentham USA: California 3 1/2 miles from Knoxville on road to Lower ...  J. T. Howell 14654 1939-5-7 
 A: 00385523  Cornus stolonifera
 A: 00385523  Cornus stolonifera  Michaux USA: California Spirit Lake, Marble Mts.    J. T. Howell 14978 1939-8-3 
 Cupressaceae A: 00356048  Cupressus macnabiana
Cupressaceae A: 00356048  Cupressus macnabiana  A. Murray USA: California Lake Co., on road from Lower Lake to Knoxvil...  J. T. Howell 14650 1939-5-7 
 Cyperaceae GH: 02395747  Carex nervina
Cyperaceae GH: 02395747  Carex nervina  L. H. Bailey USA: California [data not captured]   J. T. Howell 15119 1939-8-7 
 Ericaceae A: 00350598  Arctostaphylos manzanita
Ericaceae A: 00350598  Arctostaphylos manzanita  Parry USA: California Booth place, Knights Valley   J. T. Howell  1939-1-15 
 A: 00350735  Arctostaphylos nevadensis
 A: 00350735  Arctostaphylos nevadensis  A. Gray USA: California Spirit Lake, Marble Mts.   J. T. Howell 14998 1939-8-3 
 A: 00363190  Vaccinium membranaceum
 A: 00363190  Vaccinium membranaceum  Douglas ex Torrey USA: California Sky High Valley, Marble Mts.   J. T. Howell 15267 1939-8-10 
Fabaceae GH: 00366775  Lupinus arboreus  Sims USA: California Pt. Reyes Peninsula    J. T. Howell 14731 "B" 1939-6-4 
 GH: 02128248  Lupinus rivularis
 GH: 02128248  Lupinus rivularis  Douglas ex Lindley USA: California [data not captured]   J. T. Howell 14832 1939-7-2 
 GH: 02128345  Lupinus sellulus
 GH: 02128345  Lupinus sellulus  Kellogg USA: California [data not captured]   J. T. Howell 15039 1939-8-4 
 GH: 02128958  Lupinus tidestromii layneae
 GH: 02128958  Lupinus tidestromii layneae (Eastwood) Munz USA: California [data not captured]   J. T. Howell 14729 1939-6-4 
 GH: 02129080  Lupinus variicolor
 GH: 02129080  Lupinus variicolor  Steudel USA: California [data not captured]   J. T. Howell 14736 1939-6-4 
 GH: 02129562  Medicago hispida
 GH: 02129562  Medicago hispida  Gaertner USA: California [data not captured]   J. T. Howell  1939-11-5 
 GH: 02345447  Vicia angustifolia segitalis
 GH: 02345447  Vicia angustifolia segitalis (Thuillier) Arcangeli USA: California [data not captured]   J. T. Howell  1939-5-21 
 Fagaceae A: 00343311  Quercus sadleriana
Fagaceae A: 00343311  Quercus sadleriana  R. Brown (of Campster) USA: California Spirit Lake, Marble Mts.   J. T. Howell 14881 1939-8-2 
 A: 00343550  Quercus vacciniifolia  Kellogg USA: California Spirit Lake, Marble Mts.    J. T. Howell 14880 1939-8-2 
Garryaceae A: 00401775  Garrya flavescens congdonii (Eastwood) Dahling USA: California On Lower Lake-Knoxville road at Lake Co. lin...  J. T. Howell 14652 1939-5-7 
 A: 00401868  Garrya fremontii  Torrey USA: California Summit of Wooden Valley Grade   J. T. Howell 14597 1939-2-5 
Juncaceae GH: 02102692  Juncus effusus pacificus (Fernald & Wiegand) Piper & Beattie USA: California [data not captured]   J. T. Howell  1939-8-27 
 GH: 02400734  Juncus nevadensis
 GH: 02400734  Juncus nevadensis  S. Watson USA: California [data not captured]   J. T. Howell 15154 1939-8-8 
 GH: 02399200  Juncus occidentalis
 GH: 02399200  Juncus occidentalis  (Coville) Wiegand USA: California [data not captured]   J. T. Howell  1939-7-16 
 GH: 02396176  Juncus xiphioides
 GH: 02396176  Juncus xiphioides  E. Meyer USA: California [data not captured]   J. T. Howell 14839 1939-7-2 
 Orobanchaceae GH: 02033985  Castilleja arachnoidea
Orobanchaceae GH: 02033985  Castilleja arachnoidea  Greenman USA: California Black Mts. Marble Mts.   J. T. Howell 15182 1939-8-8 
 GH: 02033984  Castilleja arachnoidea
 GH: 02033984  Castilleja arachnoidea  Greenman USA: California Black Mt., Marble Mts.   J. T. Howell 15185 1939-8-8 
 GH: 00056168  Castilleja muscipula angustifolia
 GH: 00056168  Castilleja muscipula angustifolia Eastwood USA: California Near Spirit Lake, Marble Mountains, ca. 6000...  J. T. Howell 15059 1939-8-4 
 GH: 00056168  Castilleja pruinosa
 GH: 00056168  Castilleja pruinosa  Fernald USA: California Near Spirit Lake, Marble Mountains, ca. 6000...  J. T. Howell 15059 1939-8-4 
 GH: 01878713  Castilleja pruinosa
 GH: 01878713  Castilleja pruinosa  Fernald USA: California Black Mt., Marble Mts.   J. T. Howell 15159 1939-8-8 
 Plantaginaceae GH: 02002106  Penstemon anguineus
Plantaginaceae GH: 02002106  Penstemon anguineus  Eastwood USA: California [data not captured]   J. T. Howell 14901 1939-8-2 
 GH: 00367526  Penstemon newberryi berryi
 GH: 00367526  Penstemon newberryi berryi (Eastwood) N. H. Holmgren USA: California Marble Mts.   J. T. Howell 14864 1939-8-2 
 Poaceae GH: 00361264  Festuca dertonensis
Poaceae GH: 00361264  Festuca dertonensis  (Allioni) Ascherson & Graebner USA: California Berry Trail, Mt. Tamalpais   J. T. Howell  1939-5-14 
 GH: 00361264  Vulpia bromoides  (Linnaeus) A. Gray USA: California Berry Trail, Mt. Tamalpais   J. T. Howell  1939-5-14 
 GH: 00341834  Vulpia microstachys ciliata (A. Gray ex Beal) Lonard & Gould USA: California Walter Springs   J. T. Howell 14624 1939-4-30 
Polemoniaceae GH: 00385257  Navarretia cotulifolia  (Bentham) Hooker & Arnott USA: California Walter Springs    J. T. Howell 14626 1939-4-30 
 Polygonaceae GH: 02004222  Rumex triangulivalvis
Polygonaceae GH: 02004222  Rumex triangulivalvis  (Danser) K. H. Rechinger USA: Nevada [data not captured]   J. T. Howell 15293 1939-8-13 
 Ranunculaceae GH: 01720363  Aconitum columbianum viviparum
Ranunculaceae GH: 01720363  Aconitum columbianum viviparum (Greene) Brink USA: California Spirit Lake, Marble Mts.   J. T. Howell 15074 1939-8-5 
 GH: 01706860  Anemone drummondii
 GH: 01706860  Anemone drummondii  S. Watson USA: California Spirit Lake, Marble Mts.   J. T. Howell 14873 1939-8-2 
 Rhamnaceae A: 00349192  Ceanothus cuneatus dubius
Rhamnaceae A: 00349192  Ceanothus cuneatus dubius J. T. Howell USA: California Sand hills near Ben Lomond   J. T. Howell 14766 1939-6-16 
 A: 00349194  Ceanothus cuneatus dubius
 A: 00349194  Ceanothus cuneatus dubius J. T. Howell USA: California Skyline Boulevard near Saratoga Gap   J. T. Howell 14751 1939-6-16 
 A: 00349667  Ceanothus jepsonii
 A: 00349667  Ceanothus jepsonii  Greene USA: California near Putah Creek bridge north of Middletown   J. T. Howell 14643 1939-5-7 
 A: 00425266  Ceanothus sorediatus
 A: 00425266  Ceanothus sorediatus  Hooker & Arnott USA: California Skyline Blvd. near Saratoga Gap   J. T. Howell 14750 1939-6-16 
 A: 00378110  Frangula purshiana
 A: 00378110  Frangula purshiana  (de Candolle) A. Gray USA: California Shackleford Creek Trail, Marble Mts.   J. T. Howell 15238 1939-8-9 
 A: 00378110  Rhamnus purshiana
 A: 00378110  Rhamnus purshiana  de Candolle USA: California Shackleford Creek Trail, Marble Mts.   J. T. Howell 15238 1939-8-9 
 Rosaceae A: 01587752  Cercocarpus montanus glaber
Rosaceae A: 01587752  Cercocarpus montanus glaber (S. Watson) F. L. Martin USA: California 8 1/2 miles east of Lower Lake on road to Kn...  J. T. Howell 14645 1939-5-7 
 A: 00346411  Prunus emarginata
 A: 00346411  Prunus emarginata  (Douglas ex Hooker) Eaton USA: California Spirit Lake, Marble Mts.    J. T. Howell 14986 1939-8-3 
 A: 00345979  Rosa gymnocarpa
 A: 00345979  Rosa gymnocarpa  Nuttall ex Torrey & A. Gray USA: California Between Elk Mt. and Marble Rim, Marble Mts.   J. T. Howell 15036 1939-8-4 
 A: 00346208  Rubus parviflorus
 A: 00346208  Rubus parviflorus  Nuttall USA: California Mt. Tamalpais   J. T. Howell 14807 1939-6-25 
 Salicaceae A: 00382510  Salix eastwoodiae
Salicaceae A: 00382510  Salix eastwoodiae  Cockerell ex A. Heller USA: California Sky High Valley, Marble Mts.   J. T. Howell 15131 1939-8-7 
 A: 00382511  Salix eastwoodiae  Cockerell ex A. Heller USA: California Sky High Valley, Marble Mts.   J. T. Howell 15132 1939-8-7 
 A: 00382512  Salix eastwoodiae  Cockerell ex A. Heller USA: California Spirit Lake, Marble Mts.   J. T. Howell 15077 1939-8-5 
 A: 00382513  Salix eastwoodiae  Cockerell ex A. Heller USA: California Spirit Lake, Marble Mts.   J. T. Howell 15078 1939-8-5 
 GH: 00383743  Salix lasiolepis  Bentham USA: California Near Big Lagoon   J. T. Howell  1939-7-2 
 A: 00384681  Salix sitchensis  C. A. Sanson ex Bongard USA: California Cataract Gulch, Mt. Tamalpais   J. T. Howell 14598 1939-3-26 
Saxifragaceae A: 00363952  Ribes binominatum  A. Heller USA: California Spirit Lake, Marble Mts.   J. T. Howell 14958 1939-8-3 
 A: 00380322  Ribes lobbii
 A: 00380322  Ribes lobbii  A. Gray USA: California Near Spirit Lake, Marble Mts.   J. T. Howell 15057 1939-8-4 
 A: 00380415  Ribes marshalii
 A: 00380415  Ribes marshalii  Greene USA: California Spirit Lake, Marble Mts.   J. T. Howell 14876 1939-8-2 
 A: 00380425  Ribes menziesii
 A: 00380425  Ribes menziesii  Pursh USA: California Skyline Blvd. near Saratoga Gap   J. T. Howell 14754 1939-6-16 
 A: 00381015  Ribes viscosissimum
 A: 00381015  Ribes viscosissimum  Pursh USA: California Spirit Lake, Marble Mts.   J. T. Howell 14923 1939-8-2 
 GH: 00381150  Saxifraga fragarioides
 GH: 00381150  Saxifraga fragarioides  Greene USA: California Spirit Lake, Marble Mts.   J. T. Howell 14990 1939-8-3 
