<< < Previous Amaranthaceae GH: 01781704 Chenopodiastrum simplex (Torrey) S. Fuentes, Uotila & Borsch USA: Iowa [data not captured] A. Hayden 4011 1934-9-4
Apocynaceae GH: 02180703 Amsonia tabernaemontana Walter USA: Texas Houston: [no additional data] A. Hayden 1917
GH: 02179379 Apocynum androsaemifolium Linnaeus USA: Iowa Washington Twp. Moist area along the south s... A. Hayden 11,425 1938-10-22
A: 02179835 Apocynum cannabinum Linnaeus USA: Iowa Freeman Twp., Sec. 1. South of the outlet of... A. Hayden 4002 1935-5-14
GH: 02179834 Apocynum cannabinum Linnaeus USA: Iowa Lake Twp., Sec. 34. Common along the banks o... A. Hayden 10,273 1934-8-10
Araceae GH: 01634021 Acorus calamus Linnaeus USA: Iowa Fayette: Margin of pond near dam on west sid... A. Hayden 715 1936-6-25
GH: 01654198 Arisaema triphyllum (Linnaeus) Schott USA: Iowa Lick Creek Twp., Sec. 15. One mile west of F... A. Hayden 9,138 1938-4-26
GH: 01630967 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Iowa Clinton Twp., Sec. 11. About 3 im. nw. of Ce... A. Hayden 9823 1940-4-24
Aristolochiaceae GH: 01682019 Asarum canadense Linnaeus USA: Iowa [data not captured] A. Hayden 933 1936-5-26
Asteraceae GH: 00968274 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: Iowa Lost Island Twp., Sec. 32; Lost Island Lake A. Hayden 10716 1936-9-5
GH: 00988547 Artemisia ludoviciana Nuttall USA: Iowa Meadow Twp., Sec. 31; 2 miles north of Spenc... A. Hayden 10712 1933-8-23
GH: 02215142 Boltonia asteroides recognita (Fernald & Griscom) Cronquist USA: Iowa [data not captured] A. Hayden 11093 1934-9-10
GH: 02172200 Carduus acanthoides Linnaeus USA: Iowa [data not captured] A. Hayden 10849 1938-7-23
GH: 02172646 Centaurea stoebe micranthos (Gugler) Hayek USA: Iowa [data not captured] A. Hayden 10796 1934-8-13
GH: 02021146 Cirsium altissimum (Linnaeus) Sprengel USA: Iowa [data not captured] A. Hayden 454 1933-8-7
GH: 02020280 Cirsium arvense (Linnaeus) Scopoli USA: Iowa [data not captured] A. Hayden 10840 1934-8-16
GH: 02020616 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Iowa [data not captured] A. Hayden 10844 1938-8-13
GH: 02203214 Conyza ramosissima Cronquist USA: Iowa [data not captured] A. Hayden 8779 1940-9-7
GH: 02205088 Doellingeria umbellata (Miller) Nees USA: Iowa [data not captured] A. Hayden 9733 1934-8-13
GH: 02352548 Erigeron philadelphicus Linnaeus USA: Iowa [data not captured] A. Hayden 10571 1936-5-1
GH: 02352547 Erigeron philadelphicus Linnaeus USA: Iowa [data not captured] A. Hayden 10569 1935-6-1
GH: 02351772 Erigeron strigosus Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 8785 1940-7-3
GH: 02351769 Erigeron strigosus Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 9792 1939-6-25
GH: 01834324 Lactuca canadensis Linnaeus USA: Iowa [data not captured] A. Hayden 10797 1938-6-25
GH: 01835018 Lactuca tatarica (Linnaeus) C. A. Meyer USA: Iowa [data not captured] A. Hayden 10,595 1937-7-15
GH: 01835363 Lygodesmia juncea D. Don USA: Iowa [data not captured] A. Hayden 10,526 1934-6-30
Betulaceae A: 02194933 Betula papyrifera Marshall USA: Iowa [data not captured] A. Hayden 10,308 1937-9-13
A: 02193346 Betula pendula Roth USA: Iowa [data not captured] A. Hayden 839 1936-9-17
A: 02071650 Corylus americana Walter USA: Iowa [data not captured] A. Hayden 7053 1937-9-3
A: 02103419 Ostrya virginiana (Miller) K. Koch USA: Iowa [data not captured] A. Hayden 5062 1937-6-16
GH: 02103417 Ostrya virginiana (Miller) K. Koch USA: Iowa [data not captured] A. Hayden 5062 1937-6-16
GH: 02103416 Ostrya virginiana (Miller) K. Koch USA: Iowa [data not captured] A. Hayden 835 1936-10-15
A: 02103408 Ostrya virginiana (Miller) K. Koch USA: Iowa [data not captured] A. Hayden 834 1936-6-27
Brassicaceae GH: 00960581 Arabis hirsuta pycnocarpa (M. Hopkins) Rollins USA: Iowa [data not captured] A. Hayden 11255 1938-7-17
GH: 01181479 Berteroa incana (Linnaeus) de Candolle USA: Iowa [data not captured] A. Hayden 5006 1934-5-22
GH: 01181887 Boechera dentata (Rafinesque) Al-Shehbaz & Zarucchi USA: Iowa [data not captured] A. Hayden 11264 1938-4-26
GH: 01097867 Camelina microcarpa Andrzejowski ex de Candolle USA: Iowa [data not captured] A. Hayden 9598 1939-5-11
GH: 01098889 Cardamine concatenata (Michaux) O. Schwarz USA: Iowa [data not captured] A. Hayden 7038 1936-5-17
GH: 00983114 Cardamine cordifolia A. Gray USA: Colorado Near Fort Collins A. Hayden 1921-7
GH: 00999432 Cardamine pensylvanica Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 5013 1935-5-15
GH: 00999966 Cardamine rhomboidea (Persoon) de Candolle USA: Iowa [data not captured] A. Hayden 5012 1935-5-15
GH: 01561036 Draba reptans (Lamarck) Fernald USA: Iowa [data not captured] A. Hayden 7007
GH: 01548594 Lepidium draba Linnaeus USA: Iowa [data not captured] A. Hayden 7045 1937-6-23
GH: 01548646 Lepidium draba chalepense (Linnaeus) Thellung USA: Iowa [data not captured] A. Hayden 9602 1933-5-15
Cactaceae GH: 01875664 Opuntia humifusa (Rafinesque) Rafinesque USA: Iowa Center Twp., Sec. 21. along Village Creek in... A. Hayden 4085 1937-10-13
Caprifoliaceae A: 02187634 Viburnum rafinesquianum affine House USA: Iowa [data not captured] A. Hayden 9523
GH: 02187632 Viburnum rafinesquianum affine House USA: Iowa [data not captured] A. Hayden 2044
A: 02187627 Viburnum rafinesquianum affine House USA: Iowa [data not captured] A. Hayden 2044
Ceratophyllaceae GH: 02073268 Ceratophyllum demersum Linnaeus USA: Iowa [data not captured] A. Hayden 10,127 1937-7-15
Chenopodiaceae GH: 01782360 Chenopodium berlandieri bushianum (Aellen) Cronquist USA: Iowa [data not captured] A. Hayden 3189 1943-8-29
GH: 01783119 Oxybasis glauca (Linnaeus) S. Fuentes, Uotila & Borsch USA: Iowa [data not captured] A. Hayden 4016 1936-9-8
GH: 01783223 Oxybasis rubra (Linnaeus) S. Fuentes, Uotila & Borsch USA: Iowa [data not captured] A. Hayden 4013 1933-7-10
GH: 01783860 Salsola tragus Linnaeus USA: Iowa [data not captured] A. Hayden 4019 1936-9-8
Commelinaceae GH: 02113408 Tradescantia bracteata Small USA: Iowa [data not captured] A. Hayden 9,139 1938-6-9
GH: 02113806 Tradescantia ohiensis Rafinesque USA: Iowa [data not captured] A. Hayden 9,140 1938-5-15
GH: 02098080 Tradescantia tharpii E. S. Anderson & Woodson USA: Iowa [data not captured] A. Hayden 9567 1939-5-11
Cornaceae A: 01844038 Cornus amomum obliqua (Rafinesque) J. S. Wilson USA: Iowa [data not captured] A. Hayden 10,446 1936-8-7
Crassulaceae GH: 01990104 Rhodiola integrifolia Rafinesque USA: Colorado Near Fort Collins A. Hayden 1921-7
GH: 01990104 Sedum rosea integrifolium (Rafinesque) Hultén USA: Colorado Near Fort Collins A. Hayden 1921-7
Cupressaceae GH: 02106132 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9972 1941-9-14
GH: 02106133 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9972a 1941-9-30
GH: 02106130 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9964 1941-5-4
GH: 02106131 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9963 1941-5-4
GH: 02106128 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9968 1941-5-31
GH: 02106129 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9967 1941-5-31
GH: 02106127 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9970 1941-9-14
GH: 02106126 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9969 1941-9-4
GH: 02106125 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9974 1941-5-6
A: 02106123 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9974 1941-5-9
A: 02106124 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9974 1941-5-8
GH: 02106122 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9971 1941-9-14
GH: 02106121 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9971a 1941-9-30
GH: 02106120 Juniperus scopulorum Sargent USA: Iowa [data not captured] A. Hayden 9975 1941-5-31
GH: 02106688 Juniperus virginiana Linnaeus USA: Iowa [data not captured] A. Hayden 840 1936-9-17
Cyperaceae GH: 02371790 Carex annectens (E. P. Bicknell) E. P. Bicknell USA: Iowa [data not captured] A. Hayden 9220 1939-6-23
GH: 02578253 Carex atherodes Sprengel USA: Iowa [data not captured] A. Hayden 140 1935-7-23
GH: 02578254 Carex atherodes Sprengel USA: Iowa [data not captured] A. Hayden 1074 1936-6-26
GH: 02578255 Carex atherodes Sprengel USA: Iowa [data not captured] A. Hayden 146 1934-6-25
GH: 02368880 Carex duriuscula C. A. Meyer USA: Iowa [data not captured] A. Hayden 236 1936-5-30
GH: 02392972 Carex interior L. H. Bailey USA: Iowa [data not captured] A. Hayden 790 1936-5-31
GH: 02578491 Carex laeviconica Dewey USA: Iowa [data not captured] A. Hayden 9231 1939-7-15
GH: 01772233 Carex lupulina Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 9206 1939-10-7
GH: 02369187 Carex praegracilis W. Boott USA: Iowa [data not captured] A. Hayden 237 1936-5-30
GH: 02369186 Carex praegracilis W. Boott USA: Iowa [data not captured] A. Hayden 700 1936-9-18
GH: 02395620 Carex prairea Dewey USA: Iowa [data not captured] A. Hayden 245 1936-6-30
GH: 02395619 Carex prairea Dewey USA: Iowa [data not captured] A. Hayden 783 1930-5-15
GH: 02395618 Carex prairea Dewey USA: Iowa [data not captured] A. Hayden 680 1936-6-23
GH: 01774400 Carex rostrata Stokes USA: Iowa [data not captured] A. Hayden 600 1936-6-25
GH: 02369522 Carex sartwellii Dewey USA: Iowa [data not captured] A. Hayden 235 1936-5-30
GH: 02395920 Carex stipata Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 673 1936-6-28
GH: 01775928 Carex typhina Michaux USA: Iowa [data not captured] A. Hayden 9207 1939-10-7
GH: 02395017 Carex vulpinoidea Michaux USA: Iowa [data not captured] A. Hayden 244 1935-6-30
Ericaceae GH: 01763129 Rhododendron canescens (Michaux) Sweet USA: Texas [data not captured] A. Hayden 1917
Fabaceae GH: 01881146 Baptisia nuttalliana Small USA: Texas Houston: [no additional data] A. Hayden 1914
GH: 01885323 Dalea enneandra Nuttall USA: Iowa Sioux City Twp. Near the monument to Chief W... A. Hayden 11324
GH: 02150409 Lathyrus venosus Muhlenberg ex Willdenow USA: Minnesota [data not captured] A. Hayden 328 1932-5
GH: 02086424 Lupinus alpestris (A. Nelson) D. B. Dunn & J. M. Gillett USA: Colorado Fort Collins A. Hayden 1921-7
GH: 02129699 Medicago lupulina Linnaeus USA: Iowa [data not captured] A. Hayden 4041 1935-6-20
GH: 02132874 Oxytropis lambertii Pursh USA: Iowa [data not captured] A. Hayden 7042 1937-6-23
GH: 02132869 Oxytropis lambertii Pursh USA: Iowa [data not captured] A. Hayden 7042 1937-6-23
GH: 02132867 Oxytropis lambertii Pursh USA: Iowa [data not captured] A. Hayden 3399 1945-6-24
GH: 02131721 Pediomelum argophyllum (Pursh) Rydberg USA: Iowa [data not captured] A. Hayden 4032 1934-7-26
GH: 02131970 Pediomelum esculentum (Pursh) Rydberg USA: Iowa [data not captured] A. Hayden 11306 1938-6-9
GH: 02133789 Psoralidium tenuiflorum (Pursh) Rydberg USA: Iowa [data not captured] A. Hayden 346 1932-6-20
GH: 02136166 Strophostyles helvola (Linnaeus) Elliott USA: Iowa [data not captured] A. Hayden 11313 1938-10-1
GH: 02136309 Strophostyles leiosperma (Torrey & A. Gray) Piper USA: Iowa [data not captured] A. Hayden 4060 1934-9-10
GH: 02137541 Tephrosia virginiana (Linnaeus) Persoon USA: Iowa Iowa Twp., Sec. 21. valley of the Upper Iowa... A. Hayden 9949 1940-6-18
GH: 02342644 Trifolium dasyphyllum Torrey & A. Gray USA: Colorado Near Fort Collins A. Hayden 1921-7
GH: 02344971 Vicia americana Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 11316 1938-4-26
GH: 02344969 Vicia americana Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 4070 1936-5-5
GH: 02345818 Vicia cracca Linnaeus USA: Iowa [data not captured] A. Hayden 3527 1945-7-17
GH: 02150409 Vicia sp. USA: Minnesota [data not captured] A. Hayden 328 1932-5
Hippuridaceae GH: 02000445 Hippuris vulgaris Linnaeus USA: Iowa [data not captured] A. Hayden 10149 1935-7-15
Juncaceae GH: 02099585 Juncus balticus littoralis (Engelmann) Snogerup USA: Iowa [data not captured] A. Hayden 238 1936-5-15
GH: 02099584 Juncus balticus littoralis (Engelmann) Snogerup USA: Iowa [data not captured] A. Hayden 746 1939-7-2
GH: 02102346 Juncus dudleyi Wiegand USA: Iowa [data not captured] A. Hayden 233 1935-7-25
GH: 02102345 Juncus dudleyi Wiegand USA: Iowa [data not captured] A. Hayden 792 1936-6-25
GH: 02102344 Juncus dudleyi Wiegand USA: Iowa [data not captured] A. Hayden 233 1939-7-25
GH: 02399103 Juncus nodosus Linnaeus USA: Iowa [data not captured] A. Hayden 232 1934-7-8
GH: 02399102 Juncus nodosus Linnaeus USA: Iowa [data not captured] A. Hayden 213 1935-7-16
GH: 02398963 Juncus tenuis Willdenow USA: Iowa [data not captured] A. Hayden 793 1935-7-28
GH: 02398960 Juncus tenuis Willdenow USA: Iowa [data not captured] A. Hayden 792 1936-6-25
GH: 02398958 Juncus tenuis Willdenow USA: Iowa [data not captured] A. Hayden 231 1934-6-25
GH: 02397405 Juncus torreyi Coville USA: Iowa [data not captured] A. Hayden 212 1935-9-10
Lamiaceae GH: 02502553 Monarda punctata villicaulis (Pennell) Shinners USA: Iowa French Creek Twp., Sec. 7; along the Upper I... A. Hayden 9058 1937-9-13
Lentibulariaceae GH: 01975276 Utricularia intermedia Hayne USA: Iowa Freeman Twp., Sec. 11. Outlet of Lost Island... A. Hayden 10054 1935-9-2
GH: 01975598 Utricularia macrorhiza LeConte USA: Iowa Lake Twp., Sec. 25. Mud Lake, 5 miles north ... A. Hayden 10057 1934-7-10
Marsileaceae GH: 01084325 Marsilea quadrifolia Linnaeus USA: Iowa [data not captured] A. Hayden 8646 1940-9
Oleaceae GH: 01850058 Fraxinus quadrangulata Michaux USA: Iowa Jackson Twp., Sec. 12. About 2 miles north o... A. Hayden 9524 1939-10-21
Orchidaceae GH: 01937686 Cypripedium candidum Muhlenberg ex Willdenow USA: Iowa Highland Twp., Sec. 24. Five miles east of R... A. Hayden 3626 1945-5-22
GH: 01937690 Cypripedium candidum Muhlenberg ex Willdenow USA: Iowa Highland Twp., Sec. 24. along Mil. & St.P. R... A. Hayden 1936-5-31
GH: 01937693 Cypripedium candidum Muhlenberg ex Willdenow USA: Iowa Highland Twp., Sec. 24. about 5 miles east o... A. Hayden 9648 1939-5-25
AMES: 02032421 Spiranthes magnicamporum Sheviak USA: Iowa Highland Twp., Sec. 24, about 5 miles east o... A. Hayden 11195 1968-9-17
Phytolaccaceae GH: 01681420 Phytolacca dodecandra L'Heritier USA: Iowa [data not captured] A. Hayden 9647 1939-6-26
Plantaginaceae GH: 02212557 Callitriche palustris Linnaeus USA: Iowa [data not captured] A. Hayden 9558 1935-8-13
GH: 02212995 Chelone glabra Linnaeus USA: Iowa [data not captured] A. Hayden [data not captured] 354 1933-9-1
GH: 02001921 Penstemon albidus Nuttall USA: Iowa [data not captured] A. Hayden 9033 1937-7-23
GH: 02119005 Penstemon digitalis Nuttall ex Sims USA: Iowa [data not captured] A. Hayden 11439 1938-6-25
GH: 02120051 Penstemon grandiflorus Nuttall USA: Iowa [data not captured] A. Hayden 11438 1938-6-9
GH: 02121425 Penstemon pallidus Small USA: Iowa [data not captured] A. Hayden 9535 1939-10-27
GH: 02121424 Penstemon pallidus Small USA: Iowa [data not captured] A. Hayden 9450 1939-6-29
GH: 02121423 Penstemon pallidus Small USA: Iowa [data not captured] A. Hayden 9533 1939-5-13
GH: 01801766 Plantago aristata Michaux USA: Iowa [data not captured] A. Hayden 11478 1938-6-26
GH: 01803533 Plantago patagonica Jacquin USA: Iowa [data not captured] A. Hayden 10064 1937-6-21
GH: 01803531 Plantago patagonica Jacquin USA: Iowa [data not captured] A. Hayden 10059 1935-7-15
GH: 01804130 Plantago virginica Linnaeus USA: Iowa [data not captured] A. Hayden 10060 1935-6-20
GH: 01805445 Veronica arvensis Linnaeus USA: Iowa [data not captured] A. Hayden 9631 1939-5-1
GH: 01812634 Veronicastrum virginicum (Linnaeus) Farwell USA: Iowa [data not captured] A. Hayden 9021 1932-7-17
Poaceae GH: 01815299 Tripsacum dactyloides (Linnaeus) Linnaeus USA: Iowa [data not captured] A. Hayden 9238 1937-10-4
Polygonaceae GH: 02346002 Antenoron virginianum (Linnaeus) Roberty & Vautier USA: Iowa [data not captured] A. Hayden 6055 1936-9-18
GH: 02365544 Fallopia scandens (Linnaeus) Holub USA: Iowa [data not captured] A. Hayden 6053 1936-9-20
GH: 02364384 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3056 1932-7-2
GH: 02364383 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3051 1932-9-20
GH: 02364382 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3057 1933-7-7
GH: 02364381 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3056 1932-7-2
GH: 02364380 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3051 1932-9-20
GH: 02364379 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3055 1932-7-7
GH: 02364378 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3057 1933-7-7
GH: 02364377 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3070 1932-7-5
GH: 02364375 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3052 1932-7-2
GH: 02364374 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3050
GH: 02364373 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3061 1932-5-15
GH: 02364372 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3049 1932-7-14
GH: 02364371 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3049 1932-7-14
GH: 02364370 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3054 1932-7-18
GH: 02364369 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3049 1932-7-14
GH: 02364368 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 6051 1934-9-11
GH: 02364365 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3050
GH: 02364748 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3048 1932-7-18
GH: 02364747 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3048 1932-7-18
GH: 02364745 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3045 1934-9-1
GH: 02364744 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 5098 1933-9-6
GH: 02364743 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 1931-7-31
GH: 02364741 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3041 1935-8-20
GH: 02364739 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3040 1935-8-28
GH: 02364738 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3046 1931-8-10
GH: 02364737 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 11334 1938-8-10
GH: 02364764 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3062 1931-9-15
GH: 02364762 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 1931-7-29
GH: 02364761 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3046 1931-8-10
GH: 02364760 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3042 1932-7-1
GH: 02364759 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3048 1932-7-18
GH: 02364758 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3042 1932-7-1
GH: 02364757 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3042 1932-7-1
GH: 02364756 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 1931-7-29
GH: 02364755 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3043 1932-7-14
GH: 02364754 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3043 1932-7-14
GH: 02364753 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3042 1932-7-1
GH: 02364752 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3043 1932-7-14
GH: 02364751 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3047 1931-7-15
GH: 02364750 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 3048 1932-7-18
GH: 02363068 Persicaria hydropiper (Linnaeus) Spach USA: Iowa [data not captured] A. Hayden 3072 1933-8-23
GH: 02363066 Persicaria hydropiper (Linnaeus) Spach USA: Iowa [data not captured] A. Hayden 11344 1936-9-20
GH: 02363304 Persicaria hydropiperoides (Michaux) Small USA: Iowa [data not captured] A. Hayden 3068 1932-7-15
GH: 02363770 Persicaria lapathifolia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 6094 1936-9-8
GH: 02362197 Persicaria maculosa Gray USA: Iowa [data not captured] A. Hayden 3081 1934-8-17
GH: 02362770 Persicaria punctata (Elliott) Small USA: Iowa [data not captured] A. Hayden 6018 1937-9-6
GH: 02361114 Persicaria sagittata (Linnaeus) H. Gross USA: Iowa [data not captured] A. Hayden 5034 1937-9-13
GH: 02361113 Persicaria sagittata (Linnaeus) H. Gross USA: Iowa [data not captured] A. Hayden 3632 1946-7-31
GH: 02361379 Polygonum achoreum S. F. Blake USA: Iowa [data not captured] A. Hayden 3036 1934-7-3
GH: 02361513 Polygonum articulatum Linnaeus USA: Iowa [data not captured] A. Hayden 5028 1937-9-13
GH: 02007616 Polygonum ramosissimum Michaux USA: Iowa [data not captured] A. Hayden 7054 1937-8-31
GH: 02007615 Polygonum ramosissimum Michaux USA: Iowa [data not captured] A. Hayden 3071 1935-8-24
GH: 02007919 Polygonum tenue Michaux USA: Iowa [data not captured] A. Hayden 9392 1939-10-31
GH: 02006284 Rumex acetosella Linnaeus USA: Iowa [data not captured] A. Hayden 11330 1934-4-4
GH: 02006458 Rumex altissimus Alph. Wood USA: Iowa [data not captured] A. Hayden 9391 1939-7-14
GH: 02005043 Rumex crispus Linnaeus USA: Iowa [data not captured] A. Hayden 10328 1936-8-16
GH: 02005042 Rumex crispus Linnaeus USA: Iowa [data not captured] A. Hayden 3087 1935-7-18
GH: 02005502 Rumex maritimus fueginus (Philippi) Dusén USA: Iowa [data not captured] A. Hayden 11328 1934-6-27
Potamogetonaceae GH: 01688331 Potamogeton illinoensis Morong USA: Iowa Lake Twp., Sec. 3. Freeman Twp., Sec. 34. bo... A. Hayden 807 1934-8-10
GH: 01688799 Potamogeton nodosus Poiret USA: Iowa [data not captured] A. Hayden 10,129 1937-8-20
GH: 01746381 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 804 1934-8-11
GH: 01746379 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 751 1936-9-12
GH: 01746378 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 811 1935-9-13
GH: 01746377 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 10,113 1937-7-30
GH: 01746376 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 751 1936-9-12
Ranunculaceae GH: 01720222 Aconitum columbianum Nuttall USA: Colorado Fort Collins: [no additional data] A. Hayden 1921-7
GH: 01706651 Anemone caroliniana Walter USA: Texas Houston: Houston A. Hayden 1917
GH: 01707460 Anemone narcissiflora Linnaeus USA: Colorado Fort Collins: [no additional data] A. Hayden 1921-7
GH: 01658986 Delphinium geyeri Greene USA: Colorado Near Fort Collins A. Hayden 1921-7
GH: 01660219 Delphinium ramosum Rydberg USA: Colorado Fort Collins: [no additional data] A. Hayden 1921-7
GH: 01663866 Ranunculus fascicularis Muhlenberg ex Bigelow USA: Texas Houston: Houston A. Hayden 1917
GH: 01665619 Ranunculus laxicaulis (Torrey & A. Gray) Darby USA: Texas Houston: Houston A. Hayden 1917
Rubiaceae GH: 02359009 Galium aparine Linnaeus USA: Iowa [data not captured] A. Hayden 5059 1937-5-17
GH: 02359291 Galium boreale Linnaeus USA: Iowa [data not captured] A. Hayden 10,024 1934-6-20
GH: 02359290 Galium boreale Linnaeus USA: Iowa [data not captured] A. Hayden 9544 1939-7-22
GH: 02359650 Galium circaezans hypomalacum Fernald USA: Iowa [data not captured] A. Hayden 9551 1939-6-25
GH: 02359768 Galium concinnum Torrey & A. Gray USA: Iowa [data not captured] A. Hayden 9545 1939-6-26
GH: 02140318 Galium triflorum Michaux USA: Iowa [data not captured] A. Hayden 9755 1940-7-3
GH: 02140317 Galium triflorum Michaux USA: Iowa [data not captured] A. Hayden 2020 1936-6-27
Typhaceae GH: 00933252 Typha latifolia Linnaeus USA: Iowa [data not captured] A. Hayden 9320 1939-7-2
