Aizoaceae GH: 01860010 Cypselea humifusa Turpin USA: California Lake Lagunitas, Marin County J. T. Howell 15327 1939-8-27
Amaranthaceae GH: 01928760 Amaranthus blitoides S. Watson USA: California San Antonio Creek J. T. Howell 15351 1939-9-3
GH: 01928989 Amaranthus deflexus Linnaeus USA: California Sausalito J. T. Howell 1939-11-5
GH: 01929294 Amaranthus powellii S. Watson USA: California Near Novato J. T. Howell 15341 1939-9-3
Asteraceae GH: 01110028 Achillea borealis Bongard USA: California Mt. Theater to Bootjack J. T. Howell 1939-7-16
GH: 02141419 Agoseris grandiflora (Nuttall) Greene USA: California [data not captured] J. T. Howell 14660 1939-5-14
GH: 02141662 Agoseris hirsuta (Hooker) Greene USA: California [data not captured] J. T. Howell 14692 1939-5-21
GH: 02141695 Agoseris monticola Greene USA: California [data not captured] J. T. Howell 15187 1939-8-8
GH: 02172198 Carduus tenuiflorus Curtis USA: California [data not captured] J. T. Howell 14783 1939-6-18
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 (A. Gray) Jepson USA: California Point Reyes Lighthouse J. T. Howell 14719 1939-6-4
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 (Greene) Jepson USA: California Crystal Springs Lake J. T. Howell 14743 1939-6-16
GH: 02021466 Cirsium occidentale (Nuttall) Jepson USA: California [data not captured] J. T. Howell 14765 1939-6-16
GH: 02021703 Cirsium quercetorum (A. Gray) Jepson USA: California [data not captured] J. T. Howell 14819 1939-7-2
GH: 02021702 Cirsium quercetorum (A. Gray) Jepson USA: California [data not captured] J. T. Howell 14718 1939-6-4
GH: 02021701 Cirsium quercetorum (A. Gray) Jepson USA: California [data not captured] J. T. Howell 14739 1939-6-16
GH: 02021716 Cirsium remotifolium (Hooker) de Candolle USA: California [data not captured] J. T. Howell 15033 1939-8-4
GH: 02021010 Cirsium sp. USA: California [data not captured] J. T. Howell 14746 1939-6-16
GH: 02021014 Cirsium sp. USA: California [data not captured] J. T. Howell 14796 1939-6-25
GH: 02022118 Cirsium sp. USA: California [data not captured] J. T. Howell 14721 1939-6-4
GH: 02021943 Cirsium venustum Porta USA: California [data not captured] J. T. Howell 14747 1939-6-16
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 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 (Regel) Rydberg USA: California Spirit Lake, Marble Mts. J. T. Howell 14956 1939-8-3
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 (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 (A. Nelson) A. Löve & D. Löve USA: California Spirit Lake. Marble Mts. J. T. Howell 14952 1939-8-3
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 A. Gray USA: California Spirit Lake, Marble Mts. J. T. Howell 14993 1939-8-3
GH: 00387510 Erysimum teretifolium Eastwood USA: California Ben Lomond J. T. Howell 14760 1939-6-16
GH: 01540646 Hirschfeldia incana (Linnaeus) Lagreze-Fossat USA: California [data not captured] J. T. Howell 14846 1939-7-2
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 Linnaeus USA: California Spirit Lake, Marble Mts. J. T. Howell 15011 1939-8-3
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 (Pursh) Rafinesque USA: California Near Spirit Lake, Marble Mts. J. T. Howell 15056 1939-8-4
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 Bentham USA: California 3 1/2 miles from Knoxville on road to Lower ... J. T. Howell 14654 1939-5-7
A: 00385523 Cornus stolonifera Michaux USA: California Spirit Lake, Marble Mts. J. T. Howell 14978 1939-8-3
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 L. H. Bailey USA: California [data not captured] J. T. Howell 15119 1939-8-7
Ericaceae A: 00350598 Arctostaphylos manzanita Parry USA: California Booth place, Knights Valley J. T. Howell 1939-1-15
A: 00350735 Arctostaphylos nevadensis A. Gray USA: California Spirit Lake, Marble Mts. J. T. Howell 14998 1939-8-3
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 Douglas ex Lindley USA: California [data not captured] J. T. Howell 14832 1939-7-2
GH: 02128345 Lupinus sellulus Kellogg USA: California [data not captured] J. T. Howell 15039 1939-8-4
GH: 02128958 Lupinus tidestromii layneae (Eastwood) Munz USA: California [data not captured] J. T. Howell 14729 1939-6-4
GH: 02129080 Lupinus variicolor Steudel USA: California [data not captured] J. T. Howell 14736 1939-6-4
GH: 02129562 Medicago hispida Gaertner USA: California [data not captured] J. T. Howell 1939-11-5
GH: 02345447 Vicia angustifolia segitalis (Thuillier) Arcangeli USA: California [data not captured] J. T. Howell 1939-5-21
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 S. Watson USA: California [data not captured] J. T. Howell 15154 1939-8-8
GH: 02399200 Juncus occidentalis (Coville) Wiegand USA: California [data not captured] J. T. Howell 1939-7-16
GH: 02396176 Juncus xiphioides E. Meyer USA: California [data not captured] J. T. Howell 14839 1939-7-2
Orobanchaceae GH: 02033985 Castilleja arachnoidea Greenman USA: California Black Mts. Marble Mts. J. T. Howell 15182 1939-8-8
GH: 02033984 Castilleja arachnoidea Greenman USA: California Black Mt., Marble Mts. J. T. Howell 15185 1939-8-8
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 Fernald USA: California Near Spirit Lake, Marble Mountains, ca. 6000... J. T. Howell 15059 1939-8-4
GH: 01878713 Castilleja pruinosa Fernald USA: California Black Mt., Marble Mts. J. T. Howell 15159 1939-8-8
Plantaginaceae GH: 02002106 Penstemon anguineus Eastwood USA: California [data not captured] J. T. Howell 14901 1939-8-2
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 (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 (Danser) K. H. Rechinger USA: Nevada [data not captured] J. T. Howell 15293 1939-8-13
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 S. Watson USA: California Spirit Lake, Marble Mts. J. T. Howell 14873 1939-8-2
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 J. T. Howell USA: California Skyline Boulevard near Saratoga Gap J. T. Howell 14751 1939-6-16
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 Hooker & Arnott USA: California Skyline Blvd. near Saratoga Gap J. T. Howell 14750 1939-6-16
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 de Candolle USA: California Shackleford Creek Trail, Marble Mts. J. T. Howell 15238 1939-8-9
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 (Douglas ex Hooker) Eaton USA: California Spirit Lake, Marble Mts. J. T. Howell 14986 1939-8-3
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 Nuttall USA: California Mt. Tamalpais J. T. Howell 14807 1939-6-25
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. Gray USA: California Near Spirit Lake, Marble Mts. J. T. Howell 15057 1939-8-4
A: 00380415 Ribes marshalii Greene USA: California Spirit Lake, Marble Mts. J. T. Howell 14876 1939-8-2
A: 00380425 Ribes menziesii Pursh USA: California Skyline Blvd. near Saratoga Gap J. T. Howell 14754 1939-6-16
A: 00381015 Ribes viscosissimum Pursh USA: California Spirit Lake, Marble Mts. J. T. Howell 14923 1939-8-2
GH: 00381150 Saxifraga fragarioides Greene USA: California Spirit Lake, Marble Mts. J. T. Howell 14990 1939-8-3