Alliaceae GH: 00029769 Allium geyeri S. Watson USA: Idaho [Stony banks of Kooskooskie River, now the C... C. A. Geyer 226
Apiaceae GH: 00077335 Lomatium farinosum farinosum USA: Idaho Couer d'Alene Mountains C. A. Geyer 325
GH: 00077335 Peucedanum farinosum Geyer ex Hooker USA: Idaho Couer d'Alene Mountains C. A. Geyer 325
GH: 00076835 Peucedanum geyeri S. Watson USA: Oregon C. A. Geyer 458
Asteraceae GH: 02141201 Agoseris glauca (Pursh) Rafinesque USA: Oregon [data not captured] C. A. Geyer 666
GH: 02141540 Agoseris heterophylla (Nuttall) Greene USA: Oregon [data not captured] C. A. Geyer 292
GH: 00000907 Antennaria geyeri A. Gray USA: Oregon C. A. Geyer 542
GH: 00968256 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: Illinois Beardstown: [no additional data] C. A. Geyer 1842-9
GH: 00988299 Artemisia longifolia Nuttall USA: near [Teton] River C. A. Geyer 477161
GH: 01234815 Artemisia tridentata Nuttall USA: Oregon [no additional data] C. A. Geyer 654
GH: 01234806 Artemisia tridentata Nuttall USA: Oregon [no additional data] C. A. Geyer
GH: 00549636 Chaenactis sp. USA: Washington Spokane Falls C. A. Geyer 142
GH: 00112893 Chrysopsis villosa minor Hooker USA: Wyoming Sweet Water River C. A. Geyer 7 1843-7
GH: 02014025 Cirsium undulatum (Nuttall) Sprengel : Rocky Mountains: [data not captured] C. A. Geyer 1845
GH: 02013001 Cirsium undulatum (Nuttall) Sprengel USA: South Dakota Missouri hills near Fort Pierre C. A. Geyer 158 1839-6-14
GH: 02142921 Crepis runcinata Torrey & A. Gray USA: Oregon [data not captured] C. A. Geyer 155 1845
GH: 02203582 Dieteria canescens (Pursh) Nuttall USA: Oregon [no additional data] C. A. Geyer 586
GH: 02205079 Doellingeria umbellata (Miller) Nees USA: Illinois Beardstown: [data not captured] C. A. Geyer 1842-8
GH: 00257532 Dyssodia chrysanthemoides Lagasca USA: South Dakota near Fort Pierre C. A. Geyer 1839-6-10
GH: 00257532 Dyssodia papposa Hitchcock USA: South Dakota near Fort Pierre C. A. Geyer 1839-6-10
GH: 00518399 Ericameria nauseosa (Pallas ex Pursh) G. L. Nesom & G. I. Baird USA: Oregon upper Colorado C. A. Geyer 102
GH: 02206558 Erigeron concinnus Torrey USA: Oregon [data not captured] C. A. Geyer 392
GH: 00263091 Helianthus petiolaris Nuttall USA: Oregon C. A. Geyer 28
GH: 02203864 Heterotheca camporum (Greene) Shinners USA: Illinois Beardstown: [data not captured] C. A. Geyer 1842-7
GH: 00112893 Heterotheca villosa minor (Hooker) Semple USA: Wyoming Sweet Water River C. A. Geyer 7 1843-7
GH: 01831916 Hieracium gronovii Linnaeus USA: Illinois Beardstown: [data not captured] C. A. Geyer 1842-8
GH: 01832357 Hieracium kalmii Linnaeus USA: Washington [data not captured] C. A. Geyer 593 1845
GH: 01834201 Lactuca biennis (Moench) Fernald USA: Oregon [data not captured] C. A. Geyer 590 1845
GH: 01834710 Lactuca ludoviciana (Nuttall) Riddell USA: North Dakota [data not captured] C. A. Geyer 264 1839-7-15
GH: 01835082 Lactuca tatarica (Linnaeus) C. A. Meyer USA: [data not captured] C. A. Geyer 147
GH: 00263174 Malacothrix sonchoides (Nuttall) Torrey & A. Gray USA: Sweetwater Platte C. A. Geyer 40
GH: 00010137 Microseris nutans (Hooker) Schultz Bipontinus USA: Oregon C. A. Geyer 376
GH: 00010137 Scorzonella nutans Hooker USA: Oregon C. A. Geyer 376
GH: 00282712 Solidago incana Torrey & A. Gray USA: Between the Missouri & Mississippi, Dakota? C. A. Geyer 1839-7-7
GH: 00282712 Solidago mollis Rothrock USA: Between the Missouri & Mississippi, Dakota? C. A. Geyer 1839-7-7
GH: 00282712 Solidago nemoralis incana (Torrey & A. Gray) A. Gray USA: Between the Missouri & Mississippi, Dakota? C. A. Geyer 1839-7-7
Boraginaceae GH: 02059783 Oreocarya cana A. Nelson USA: Nebraska on the hills of the upper Platte River. C. A. Geyer 89
Brassicaceae GH: 00974286 Arabis eschscholtziana Andrzejowski ex Ledebour USA: Oregon [data not captured] C. A. Geyer 565
GH: 00974753 Barbarea orthoceras Ledebour USA: Oregon [data not captured] C. A. Geyer
GH: 00948602 Boechera sparsiflora subvillosa (S. Watson) Dorn USA: Oregon [data not captured] C. A. Geyer 564
GH: 00999111 Cardamine parviflora arenicola (Britton) O. E. Schulz USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-4
GH: 00986714 Descurainia pinnata (Walter) Britton USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-4
GH: 01103665 Draba brachycarpa Nuttall USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-4
GH: 01115814 Draba nemorosa Linnaeus USA: Oregon [data not captured] C. A. Geyer 626
GH: 01115854 Draba nemorosa Linnaeus USA: Oregon [data not captured] C. A. Geyer 626 1845
GH: 01561059 Draba reptans (Lamarck) Fernald USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-4
GH: 01561895 Erysimum capitatum (Douglas ex Hooker) Greene USA: Illinois [data not captured] C. A. Geyer 1842
GH: 01561896 Erysimum capitatum (Douglas ex Hooker) Greene USA: Illinois [data not captured] C. A. Geyer 1842-7
GH: 00415701 Noccaea fendleri (A. Gray) Holub USA: Oregon [no additional data] C. A. Geyer 305
GH: 00019430 Physaria geyeri (Hooker) A. Gray USA: Washington [Upper Spokane Valley] C. A. Geyer 476
GH: 00415701 Thlaspi cochleariforme de Candolle USA: Oregon [no additional data] C. A. Geyer 305
GH: 00019430 Vesicaria geyeri Hooker USA: Washington [Upper Spokane Valley] C. A. Geyer 476
Chenopodiaceae GH: 02003028 Atriplex canescens (Pursh) Nuttall USA: Upper Missouri C. A. Geyer
GH: 02003816 Atriplex gardneri D. Dietrich USA: [no additional data] C. A. Geyer 104
GH: 01784856 Krascheninnikovia lanata (Pursh) A. Meeuse & A. Smit USA: Oregon [data not captured] C. A. Geyer 107
GH: 01785085 Sarcobatus vermiculatus (Hooker) Torrey USA: Oregon [no additional data] C. A. Geyer
Convolvulaceae GH: 02057584 Evolvulus pilosus Roxburgh USA: Nebraska Upper Missouri C. A. Geyer
Cyperaceae GH: 02367115 Bulbostylis capillaris (Linnaeus) Kunth ex C. B. Clarke USA: Illinois [data not captured] C. A. Geyer 1842-7
GH: 00058546 Carex geyeri Boott USA: C. A. Geyer 332
GH: 02370199 Carex radiata (Wahlenberg) Small USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-5
GH: 02395102 Carex vulpinoidea Michaux USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-5
Ericaceae GH: 01720077 Orthilia secunda (Linnaeus) House USA: Oregon [no additional data] C. A. Geyer 428
GH: 01684790 Pyrola asarifolia Michaux USA: Oregon [data not captured] C. A. Geyer 427
Euphorbiaceae GH: 00047684 Euphorbia geyeri Engelmann USA: Illinois Beardstown C. A. Geyer 1842-8
Fabaceae GH: 01967693 Amorpha canescens Pursh USA: Illinois Beardstown C. A. Geyer 1842-7
GH: 00058654 Astragalus arrectus A. Gray USA: Upper Kooskooskee [River] C. A. Geyer 378
GH: 00064191 Astragalus geyeri A. Gray USA: Sand prairies of the Upper Platte C. A. Geyer 1
GH: 00058654 Astragalus leucophyllus Hooker USA: Upper Kooskooskee [River] C. A. Geyer 378
GH: 02048615 Astragalus sericoleucus A. Gray USA: Nebraska [no additional data] C. A. Geyer 161
GH: 02085886 Lupinus caudatus Kellogg USA: Missouri and Oregon, Rocky Mountains C. A. Geyer 29 1845
GH: 02176922 Lupinus leucophyllus belliae C. P. Smith USA: Oregon [data not captured] C. A. Geyer 390
GH: 02128535 Lupinus sericeus Pursh USA: Oregon [data not captured] C. A. Geyer
GH: 02132969 Oxytropis lambertii Pursh USA: Oregon [data not captured] C. A. Geyer
GH: 02131478 Oxytropis sericea Nuttall USA: Oregon [data not captured] C. A. Geyer 5
GH: 02131645 Oxytropis splendens Douglas USA: Upper Missouri. C. A. Geyer
GH: 00064191 Phaca annua Geyer USA: Sand prairies of the Upper Platte C. A. Geyer 1
GH: 02133648 Psoralidium lanceolatum (Pursh) Rydberg USA: Oregon [data not captured] C. A. Geyer
GH: 02133780 Psoralidium tenuiflorum (Pursh) Rydberg USA: Illinois [data not captured] C. A. Geyer 1842-6
GH: 02342832 Trifolium douglasii House USA: Oregon [data not captured] C. A. Geyer 472
GH: 02343578 Trifolium microcephalum Pursh USA: Missouri and Oregon, Rocky Mountains C. A. Geyer 640 1845
GH: 02345090 Vicia americana Muhlenberg ex Willdenow USA: Oregon [data not captured] C. A. Geyer 338
Gentianaceae GH: 02069611 Frasera albicaulis Grisebach USA: Idaho Oregon C. A. Geyer 352
Juncaceae GH: 02400271 Juncus biflorus Elliott USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-5
GH: 02117779 Luzula multiflora (Ehrhart) Lejeune USA: Oregon [data not captured] C. A. Geyer 318
Lamiaceae GH: 02502554 Monarda punctata villicaulis (Pennell) Shinners USA: Illinois Beardstown: [no additional data] C. A. Geyer 1842-8
Liliaceae GH: 00030172 Trillium recurvatum L. C. Beck USA: Missouri Saint Louis (Missouri): C. A. Geyer 1842-4
Loasaceae GH: 00076040 Mentzelia albicaulis integrifolia S. Watson USA: Oregon C. A. Geyer 663
GH: 00076040 Mentzelia dispersa S. Watson USA: Oregon C. A. Geyer 663
GH: 00076044 Mentzelia dispersa S. Watson USA: Oregon C. A. Geyer 663
Loranthaceae GH: 00274945 Arceuthobium campylopodum Engelmann USA: Oregon C. A. Geyer 577
Malvaceae GH: 00306442 Callirhoe triangulata (Leavenworth) A. Gray USA: Illinois Beardstown: [data not captured] C. A. Geyer 1842-7
Onagraceae GH: 00054144 Gayophytum ramosissimum strictipes Hooker USA: Oregon C. A. Geyer 547
GH: 00054143 Gayophytum ramosissimum deflexum Hooker USA: Oregon C. A. Geyer 4
Orchidaceae GH: 01937851 Cypripedium montanum Douglas ex Lindley USA: Oregon [no additional data] C. A. Geyer 334
AMES: 02050009 Platanthera purpurascens (Rydberg) Sheviak & W. F. Jennings USA: Oregon Upper Platte or [illegible] River C. A. Geyer 233
AMES: 02050412 Platanthera unalascensis (Sprengel) Kurtz USA: Oregon [no additional data] C. A. Geyer 534
Phyllanthaceae GH: 01971437 Phyllanthopsis phyllanthoides Vorontsova & Petra Hoffmann USA: Illinois Beardstown: [no additional data] C. A. Geyer 1842-8
GH: 01971437 Phyllanthus carolinensis Walter USA: Illinois Beardstown: [no additional data] C. A. Geyer 1842-8
Plantaginaceae GH: 01998802 Collinsia parviflora Lindley USA: Oregon [data not captured] C. A. Geyer
GH: 01999160 Collinsia verna Nuttall USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-5
GH: 01999690 Gratiola neglecta Torrey USA: Oregon [data not captured] C. A. Geyer
GH: 01999967 Gratiola virginiana Linnaeus USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-5
GH: 02002158 Penstemon angustifolius Nuttall ex Pursh USA: Oregon [data not captured] C. A. Geyer 154
GH: 02118303 Penstemon cobaea Nuttall USA: Kansas [no additional data] C. A. Geyer 90
GH: 02118476 Penstemon confertus Douglas ex Lindley USA: Oregon [data not captured] C. A. Geyer 464
GH: 02119809 Penstemon glandulosus Douglas ex Lindley USA: Oregon [data not captured] C. A. Geyer 362
GH: 02120078 Penstemon grandiflorus Nuttall USA: Nebraska Platte C. A. Geyer 248
GH: 02121431 Penstemon pallidus Small USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-5
GH: 02122137 Penstemon richardsonii Douglas ex Lindley USA: Oregon [data not captured] C. A. Geyer 582
GH: 02122652 Penstemon speciosus Douglas USA: Oregon [data not captured] C. A. Geyer 641
GH: 01802000 Plantago cordata Lamarck USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1842-4
GH: 01802079 Plantago elongata Pursh USA: [data not captured] C. A. Geyer 1839-6-20
GH: 00091798 Synthyris missurica (Rafinesque) Pennell USA: Idaho Fertile northerly slopes of the Sweeny Mount... C. A. Geyer
GH: 00091798 Synthyris reniformis major Hooker USA: Idaho Fertile northerly slopes of the Sweeny Mount... C. A. Geyer
GH: 00091843 Tonella floribunda A. Gray USA: Idaho C. A. Geyer 354
Poaceae GH: 00303930 Aristida geyeriana Steudel USA: Illinois Cass Co.; Sandy, Beardstown C. A. Geyer s.n. 1842-8
GH: 00303930 Aristida stricta Michaux USA: Illinois Cass Co.; Sandy, Beardstown C. A. Geyer s.n. 1842-8
GH: 00023145 Atheropogon papillosus Engelmann USA: Illinois Beardstown: [no additional data] C. A. Geyer 1842-8
GH: 00023200 Bouteloua curtipendula (Michaux) Torrey USA: Illinois Beardstown: Dry hills C. A. Geyer 1842-7
GH: 00023200 Bouteloua curtipendula aristosa A. Gray USA: Illinois Beardstown: Dry hills C. A. Geyer 1842-7
GH: 00023145 Bouteloua hirsuta Lagasca USA: Illinois Beardstown: [no additional data] C. A. Geyer 1842-8
GH: 00023927 Melica bella Piper USA: Oregon Upper Platte C. A. Geyer 11
GH: 00023927 Melica bulbosa Geyer ex Porter & Coulter USA: Oregon Upper Platte C. A. Geyer 11
GH: 01814631 Schizachyrium scoparium (Michaux) Nash USA: Illinois [data not captured] C. A. Geyer 1842-8
Polemoniaceae GH: 01092141 Collomia grandiflora Douglas ex Lindley USA: Oregon C. A. Geyer 441
GH: 01104279 Gilia trifida Bentham USA: Nebraska [Scott’s Bluffs, Upper Platte River] C. A. Geyer 46 [p.p.]
GH: 00985213 Ipomopsis aggregata (Pursh) V. E. Grant USA: Oregon [data not captured] C. A. Geyer 435
GH: 01104279 Ipomopsis pumila (Nuttall) V. E. Grant USA: Nebraska [Scott’s Bluffs, Upper Platte River] C. A. Geyer 46 [p.p.]
GH: 00872581 Navarretia intertexta (Bentham) Hooker USA: Oregon C. A. Geyer 544
GH: 00954904 Phlox douglasii longifolia A. Gray USA: Lower Platte C. A. Geyer 88
GH: 00091633 Phlox longifolia linearifolia (Hooker) Brand USA: Oregon Valley of the Kooskooskie C. A. Geyer 340
GH: 00954904 Phlox sibirica Linnaeus USA: Lower Platte C. A. Geyer 88
GH: 00091633 Phlox speciosa linearifolia Hooker USA: Oregon Valley of the Kooskooskie C. A. Geyer 340
GH: 00091490 Polemonium caeruleum foliosissimum A. Gray USA: Oregon C. A. Geyer 530
Polygonaceae GH: 00036686 Bistorta bistortoides (Pursh) Small USA: Oregon Nez Perce highlands C. A. Geyer 405
GH: 00936108 Eriogonum brevicaule Nuttall USA: Missouri and Oregon, Rocky Mountains C. A. Geyer 139 1845
GH: 00036311 Eriogonum divaricatum Hooker USA: C. A. Geyer 92
GH: 00936649 Eriogonum salsuginosum (Nuttall) Hooker USA: Oregon [no additional data] C. A. Geyer 92
GH: 02361106 Persicaria sagittata (Linnaeus) H. Gross USA: Illinois [data not captured] C. A. Geyer 1842-8
GH: 00036686 Polygonum bistorta oblongifolium Meisner USA: Oregon Nez Perce highlands C. A. Geyer 405
GH: 00036686 Polygonum bistortoides Pursh USA: Oregon Nez Perce highlands C. A. Geyer 405
GH: 02007858 Polygonum spergulariiforme Meisner ex Small USA: Oregon [no additional data] C. A. Geyer 355
GH: 02007903 Polygonum tenue Michaux USA: Illinois [data not captured] C. A. Geyer 1842-7
GH: 02004011 Rumex paucifolius Nuttall USA: Oregon [data not captured] C. A. Geyer 488
Portulacaceae GH: 00306095 Claytonia parviflora depressa A. Gray USA: Oregon C. A. Geyer 387
GH: 00306095 Claytonia rubra rubra USA: Oregon C. A. Geyer 387
GH: 00306095 Montia parviflora depressa (A. Gray) B. L. Robinson USA: Oregon C. A. Geyer 387
Ranunculaceae GH: 00038217 Delphinium burkei distichiflorum Hooker ex Huth USA: Oregon C. A. Geyer 420
GH: 00038217 Delphinium distichum Geyer ex A. Gray USA: Oregon C. A. Geyer 420
GH: 00306161 Myosurus minimus Linnaeus USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1812-4
GH: 00306161 Myosurus minimus minimus USA: Missouri Saint Louis (Missouri): [data not captured] C. A. Geyer 1812-4
GH: 00263678 Ranunculus alismifolius Geyer ex Bentham USA: Idaho [High grassy plains of Coer d'Aleine] C. A. Geyer 306
GH: 00038639 Trautvetteria palmata coriacea Huth USA: Illinois Beadstown C. A. Geyer 1842-7
Rosaceae GH: 01011949 Sanguisorba annua (Nuttall) Nuttall USA: Oregon C. A. Geyer 467
Rubiaceae GH: 02138988 Galium pilosum Aiton USA: Illinois Beardstown: [data not captured] C. A. Geyer 1842-7
Salicaceae GH: 00030966 Salix fendleriana Andersson USA: Oregon C. A. Geyer 287
A: 00030975 Salix geyeriana Andersson USA: C. A. Geyer 286
