Aizoaceae GH: 01681067 Mollugo verticillata Linnaeus USA: Nebraska On Middle Loup River, near Mullen P. A. Rydberg 1773 1893-9-15
Apocynaceae GH: 02179536 Apocynum androsaemifolium Linnaeus USA: South Dakota Rapid City (South Dakota): [no additional da... P. A. Rydberg 871 1892-6-25
GH: 02179912 Apocynum cannabinum Linnaeus USA: Nebraska On Middle Loup River, near Norway P. A. Rydberg 1353 1893-6-22
Asteraceae GH: 00106818 Agoseris maculata Rydberg USA: Colorado Silver Plume P. A. Rydberg 1895-8-24
GH: 00000880 Antennaria campestris Rydberg USA: South Dakota Custer County P. A. Rydberg 794 1892-5-30
GH: 00000880 Antennaria plantaginifolia (Linnaeus) Hooker USA: South Dakota Custer County P. A. Rydberg 794 1892-5-30
GH: 01003802 Artemisia biennis Willdenow USA: Nebraska In the Lake Region of Grant County, 1 mile W... P. A. Rydberg 1893-9
GH: 00968348 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: South Dakota Custer: Black Hills P. A. Rydberg 81 1892-8-15
GH: 00988204 Artemisia frigida Willdenow USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1733 1893-8-8
GH: 00988229 Artemisia frigida Willdenow USA: South Dakota Custer: Black Hills P. A. Rydberg 819 1892-8-19
GH: 00988598 Artemisia ludoviciana Nuttall USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1725 1893-8-26
GH: 00241332 Bidens frondosa Linnaeus USA: Nebraska On Middle Loup River, near Thetford P. A. Rydberg 1707 1893-8-20
GH: 00241332 Bidens melanocarpa Wiegand USA: Nebraska On Middle Loup River, near Thetford P. A. Rydberg 1707 1893-8-20
GH: 00055841 Chrysopsis angustifolia Rydberg USA: Nebraska On Middle Loup River, near Mullen P. A. Rydberg 1766 1893-9-14
GH: 02353805 Erigeron lonchophyllus Hooker USA: South Dakota [no additional data] P. A. Rydberg 786 1892-8-20
GH: 02352681 Erigeron philadelphicus Linnaeus USA: South Dakota Hot Springs (South Dakota): Black Hills P. A. Rydberg 783 1892-6-17
GH: 02351858 Erigeron strigosus Muhlenberg ex Willdenow USA: Nebraska Sand Hills; Near the Forks of Dismal River P. A. Rydberg 1451 1893-7-11
GH: 00007092 Eupatorium maculatum Linnaeus USA: Nebraska South fork of Dismal River P. A. Rydberg 1682 1893-8-12
GH: 00007092 Eupatorium purpureum Linnaeus USA: Nebraska South fork of Dismal River P. A. Rydberg 1682 1893-8-12
GH: 00007092 Eupatorium rydbergii Britton USA: Nebraska South fork of Dismal River P. A. Rydberg 1682 1893-8-12
GH: 02587518 Grindelia squarrosa (Pursh) Dunal USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1760 1893-9-12
GH: 00269094 Haplopappus spinulosus (Pursh) de Candolle USA: Nebraska Thedford: On Middle Loup River, near Thedfor... P. A. Rydberg 1403 1893-8-19
GH: 00269094 Haplopappus spinulosus glaberrimus (Rydberg) S. F. Blake USA: Nebraska Thedford: On Middle Loup River, near Thedfor... P. A. Rydberg 1403 1893-8-19
GH: 00008826 Helianthus diffusus Moench USA: Nebraska 3 miles northeast of Whitman P. A. Rydberg 1627 1893-7-29
GH: 00008826 Helianthus laetiflorus subrhomboideus (Rydberg) Fernald USA: Nebraska 3 miles northeast of Whitman P. A. Rydberg 1627 1893-7-29
GH: 00008826 Helianthus rigidus (Cassini) Desfontaines USA: Nebraska 3 miles northeast of Whitman P. A. Rydberg 1627 1893-7-29
GH: 00008826 Helianthus subrhomboideus Rydberg USA: Nebraska 3 miles northeast of Whitman P. A. Rydberg 1627 1893-7-29
GH: 00055841 Heterotheca stenophylla angustifolia (Rydberg) Semple USA: Nebraska On Middle Loup River, near Mullen P. A. Rydberg 1766 1893-9-14
GH: 02204558 Heterotheca villosa ballardii (Rydberg) Semple USA: South Dakota Deadwood: [no additional data] P. A. Rydberg 169 1913-7-28
GH: 01833115 Hieracium umbellatum Linnaeus USA: South Dakota Rapid City (South Dakota): the Black Hills P. A. Rydberg 837 1892-6-25
GH: 00009789 Lacinaria squarrosa (Linnaeus) Hill USA: Nebraska 4 miles northeast of Whitman P. A. Rydberg 1505 1893-7-31
GH: 01834365 Lactuca canadensis Linnaeus USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1755 1893-9-12
GH: 01834707 Lactuca ludoviciana (Nuttall) Riddell USA: Nebraska On Middle Loup River, near Mullen P. A. Rydberg 1555 1893-7-17
GH: 01834718 Lactuca ludoviciana (Nuttall) Riddell USA: South Dakota Black Hills of South Dakota; On French Creek... P. A. Rydberg 847 1892-7-23
GH: 01835096 Lactuca tatarica (Linnaeus) C. A. Meyer USA: South Dakota Deadwood: [no additional data] P. A. Rydberg 74 1913-7-18
GH: 01835093 Lactuca tatarica (Linnaeus) C. A. Meyer USA: South Dakota Custer: [no additional data] P. A. Rydberg 848 1892-8-16
GH: 00009789 Liatris glabrata Rydberg USA: Nebraska 4 miles northeast of Whitman P. A. Rydberg 1505 1893-7-31
GH: 00009789 Liatris squarrosa glabrata (Rydberg) Gaiser USA: Nebraska 4 miles northeast of Whitman P. A. Rydberg 1505 1893-7-31
GH: 01835399 Lygodesmia juncea D. Don USA: Nebraska On Middle Loup River, near Mullen P. A. Rydberg 1432 1893-7-27
GH: 01835452 Lygodesmia rostrata A. Gray USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1584 1893-8-24
GH: 00269094 Machaeranthera pinnitifida (Hooker) Shinners USA: Nebraska Thedford: On Middle Loup River, near Thedfor... P. A. Rydberg 1403 1893-8-19
GH: 00012450 Solidago canadensis gilvocanescens Rydberg USA: Nebraska Cody's Lakes at the head of Dismal River P. A. Rydberg 1662 1893-8-10
GH: 00012450 Solidago pruinosa Greene USA: Nebraska Cody's Lakes at the head of Dismal River P. A. Rydberg 1662 1893-8-10
GH: 00269094 Xanthisma glaberrimum (Rydberg) G. L. Nesom & O'Kennon USA: Nebraska Thedford: On Middle Loup River, near Thedfor... P. A. Rydberg 1403 1893-8-19
Cyperaceae GH: 02578265 Carex atherodes Sprengel USA: Montana [data not captured] P. A. Rydberg 3203 1896-7-25
GH: 02578272 Carex atherodes Sprengel USA: Nebraska [data not captured] P. A. Rydberg 1622 1893-8-4
GH: 02503258 Carex brevipes W. Boott ex B. D. Jackson USA: Montana [data not captured] P. A. Rydberg 3392 1896-8-19
GH: 02503259 Carex brevipes W. Boott ex B. D. Jackson USA: Montana [data not captured] P. A. Rydberg 3377 1896-8-17
GH: 02393663 Carex canescens Linnaeus USA: Montana [data not captured] P. A. Rydberg 3077 1896-7-15
GH: 02503258 Carex deflexa boottii L. H. Bailey USA: Montana [data not captured] P. A. Rydberg 3392 1896-8-19
GH: 02503259 Carex deflexa boottii L. H. Bailey USA: Montana [data not captured] P. A. Rydberg 3377 1896-8-17
GH: 02394584 Carex disperma Dewey USA: Montana [data not captured] P. A. Rydberg 3298 1896-8-8
GH: 02394579 Carex disperma Dewey USA: Montana [data not captured] P. A. Rydberg 2105 1895-7-8
GH: 02370370 Carex hoodii Boott USA: Montana [data not captured] P. A. Rydberg 3221 1896-7-28
GH: 02370369 Carex hoodii Boott USA: Montana [data not captured] P. A. Rydberg 3207 1896-7-28
GH: 02370401 Carex hoodii Boott USA: Utah Headwaters of Little Cottonwood Creek, above... P. A. Rydberg 6844 1905-7-10
GH: 02392996 Carex interior L. H. Bailey USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1261 1893-6-14
GH: 02368691 Carex nuttallii Dewey USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1250 1893-6-14
GH: 02369217 Carex praegracilis W. Boott USA: Nebraska On the Middle Loup River, near Thedford P. A. Rydberg 1317 1893-6-16
GH: 02369202 Carex praegracilis W. Boott USA: Montana [data not captured] P. A. Rydberg 3227 1896-7-30
GH: 02369538 Carex sartwellii Dewey USA: Montana [data not captured] P. A. Rydberg 3127 1896-7-17
GH: 01773727 Carex utriculata Boott USA: Montana [data not captured] P. A. Rydberg 2121 1895-7-9
GH: 01773728 Carex utriculata Boott USA: Montana [data not captured] P. A. Rydberg 3330 1896-8-11
GH: 01773729 Carex utriculata Boott USA: Montana [data not captured] P. A. Rydberg 3071 1896-7-15
Ericaceae A: 01593983 Kalmia latifolia Linnaeus USA: North Carolina Grandfather's Mountain; higher Alleghany Mou... P. A. Rydberg 9369 1925-7-10
A: 01683498 Pieris floribunda (Pursh) Bentham & Hooker f. USA: North Carolina [data not captured] P. A. Rydberg 9494 1925-7-24
GH: 01684796 Pyrola asarifolia Michaux USA: South Dakota Sylvan Lake P. A. Rydberg 860 1892-7-19
Gentianaceae GH: 02069876 Frasera speciosa Douglas ex Grisebach USA: South Dakota Lead: Lead City P. A. Rydberg 879 1892-7-2
GH: 02167557 Gentianella amarella acuta (Michaux) J. M. Gillett USA: South Dakota Lead: [no additional data] P. A. Rydberg 144 1913-8-11
Juncaceae GH: 02397456 Juncus torreyi Coville USA: Nebraska On Middle Loup River P. A. Rydberg 1575 1893-7-18
Lentibulariaceae GH: 01975635 Utricularia macrorhiza LeConte USA: Nebraska On Middle Loup River, near Thedford. P. A. Rydberg 1358 1893-6-16
Liliaceae GH: 00029982 Maianthemum canadense Desfontaines USA: South Dakota Piedmont and Little Elk Creek P. A. Rydberg 1043 1892-6-27
GH: 00029982 Maianthemum canadense interius Fernald USA: South Dakota Piedmont and Little Elk Creek P. A. Rydberg 1043 1892-6-27
Oleaceae A: 01849486 Fraxinus pennsylvanica Marshall USA: Nebraska Hackberry Springs P. A. Rydberg 1891-7-10
Onagraceae GH: 01672801 Epilobium ciliatum Rafinesque USA: Idaho Henry's Lake P. A. Rydberg Ernst A. Bessey 4561 1897-7-31
Plantaginaceae GH: 01805003 Veronica americana Schweinitz ex Bentham USA: Nebraska On Middle Loup River, near Thedford P. A. Rydberg 1332 1893-6-16
GH: 01805099 Veronica americana Schweinitz ex Bentham USA: South Dakota Rapid City (South Dakota): [no additional da... P. A. Rydberg 927 1892-6-25
GH: 01811938 Veronica serpyllifolia humifusa (Dickson) Syme USA: Montana [data not captured] P. A. Rydberg 4933 1897-6-14
Poaceae GH: 00022924 Agropyron albicans Scribner & J. G. Smith USA: Montana Yogo Gulch, alt. 5000 feet P. A. Rydberg 3405 1896-8-22
GH: 00022940 Agropyron riparium Scribner & J. G. Smith USA: Montana Garrison: P. A. Rydberg 2127 1895-7-10
GH: 00023034 Andropogon gerardi paucipilus (Nash) Fernald USA: Nebraska Lake Region, 3 miles northeast of Whitman P. A. Rydberg 1607 1893-7-31
GH: 00023034 Andropogon hallii Hackel USA: Nebraska Lake Region, 3 miles northeast of Whitman P. A. Rydberg 1607 1893-7-31
GH: 01812879 Andropogon hallii Hackel USA: Nebraska In the Lake Region of Grant County, 4 miles ... P. A. Rydberg 1596 1893-7-31
GH: 01812877 Andropogon hallii Hackel USA: Nebraska In the Lake Region of Grant County, 4 miles ... P. A. Rydberg 1813 1893-7-31
GH: 00023034 Andropogon paucipilus Nash USA: Nebraska Lake Region, 3 miles northeast of Whitman P. A. Rydberg 1607 1893-7-31
GH: 01813099 Andropogon ternarius Michaux USA: Virginia Portsmouth (Virginia): [no additional data] P. A. Rydberg
GH: 00055392 Panicum capillare occidentale Rydberg USA: Nebraska In the lake region of Grant County, 1 mile w... P. A. Rydberg 1788 1893-9-19
GH: 01814773 Sorghastrum nutans (Linnaeus) Nash USA: Colorado La Salle P. A. Rydberg 2513 1895-8-3
GH: 01814875 Sorghastrum nutans (Linnaeus) Nash USA: Nebraska In the Lake Region of Grant County, 3 miles ... P. A. Rydberg 1638 1893-8-4
Ranunculaceae GH: 00038071 Aconitum columbianum Nuttall USA: South Dakota Sylvan Lake P. A. Rydberg 507 1892-7-18
GH: 00038071 Aconitum delphinifolium de Candolle USA: South Dakota Sylvan Lake P. A. Rydberg 507 1892-7-18
GH: 00038071 Aconitum fischeri Reichenbach USA: South Dakota Sylvan Lake P. A. Rydberg 507 1892-7-18
GH: 00038071 Aconitum tenue Rydberg USA: South Dakota Sylvan Lake P. A. Rydberg 507 1892-7-18
GH: 00038540 Thalictrum nigromontanum Boivin USA: South Dakota Deadwood P. A. Rydberg 135 1913-7-31
GH: 00038540 Thalictrum venulosum Trelease USA: South Dakota Deadwood P. A. Rydberg 135 1913-7-31
Rosaceae A: 00019674 Drymocallis micropetala Rydberg USA: Utah Hills and mountains north of Salt Lake City P. A. Rydberg 6153 1905-6-12
A: 01559081 Rosa carolina Linnaeus USA: Virginia Bull Pasture Mountain, Shenandoah Mountains P. A. Rydberg 9009 1925-6-13
Rubiaceae GH: 02359421 Galium boreale Linnaeus USA: South Dakota Rapid City (South Dakota): [no additional da... P. A. Rydberg 750 1892-6-25
Salicaceae A: 00030820 Populus acuminata Rydberg USA: Nebraska Carter Canyon P. A. Rydberg 372 1891-7-26
Scrophulariaceae GH: 01841478 Erythranthe geyeri (Torrey) G. L. Nesom USA: South Dakota Custer P. A. Rydberg 923 1892-8-1
Solanaceae GH: 00077424 Solanum interius Rydberg USA: Nebraska On Middle Loup River, near Mullen P. A. Rydberg 1385 1893-7-20
GH: 00077424 Solanum nigrum Linnaeus USA: Nebraska On Middle Loup River, near Mullen P. A. Rydberg 1385 1893-7-20
