Harvard University Herbaria & Libraries

Araceae
GH: 01634021 Acorus calamus Linnaeus USA: Iowa Fayette: Margin of pond near dam on west sid... A. Hayden 715 1936-6-25
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: 02352548 Erigeron philadelphicus Linnaeus USA: Iowa [data not captured] A. Hayden 10571 1936-5-1
Betulaceae
A: 02193346 Betula pendula Roth USA: Iowa [data not captured] A. Hayden 839 1936-9-17
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: 01098889 Cardamine concatenata (Michaux) O. Schwarz USA: Iowa [data not captured] A. Hayden 7038 1936-5-17
Chenopodiaceae
GH: 01783119 Oxybasis glauca (Linnaeus) S. Fuentes, Uotila & Borsch USA: Iowa [data not captured] A. Hayden 4016 1936-9-8
GH: 01783860 Salsola tragus Linnaeus USA: Iowa [data not captured] A. Hayden 4019 1936-9-8
Cornaceae
A: 01844038 Cornus amomum obliqua (Rafinesque) J. S. Wilson USA: Iowa [data not captured] A. Hayden 10,446 1936-8-7
Cupressaceae
GH: 02106688 Juniperus virginiana Linnaeus USA: Iowa [data not captured] A. Hayden 840 1936-9-17
Cyperaceae
GH: 02578254 Carex atherodes Sprengel USA: Iowa [data not captured] A. Hayden 1074 1936-6-26
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: 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: 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
Fabaceae
GH: 02344969 Vicia americana Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 4070 1936-5-5
Juncaceae
GH: 02099585 Juncus balticus littoralis (Engelmann) Snogerup USA: Iowa [data not captured] A. Hayden 238 1936-5-15
GH: 02102345 Juncus dudleyi Wiegand USA: Iowa [data not captured] A. Hayden 792 1936-6-25
GH: 02398960 Juncus tenuis Willdenow USA: Iowa [data not captured] A. Hayden 792 1936-6-25
Orchidaceae
GH: 01937690 Cypripedium candidum Muhlenberg ex Willdenow USA: Iowa Highland Twp., Sec. 24. along Mil. & St.P. R... A. Hayden 1936-5-31
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: 02363066 Persicaria hydropiper (Linnaeus) Spach USA: Iowa [data not captured] A. Hayden 11344 1936-9-20
GH: 02363770 Persicaria lapathifolia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 6094 1936-9-8
GH: 02005043 Rumex crispus Linnaeus USA: Iowa [data not captured] A. Hayden 10328 1936-8-16
Potamogetonaceae
GH: 01746379 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 751 1936-9-12
GH: 01746376 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 751 1936-9-12
Rubiaceae
GH: 02140317 Galium triflorum Michaux USA: Iowa [data not captured] A. Hayden 2020 1936-6-27