Harvard University Herbaria & Libraries

Aizoaceae
GH: 01681029 Mollugo verticillata Linnaeus USA: Iowa [data not captured] A. Hayden 9169 1938-10-1
Apocynaceae
GH: 02179379 Apocynum androsaemifolium Linnaeus USA: Iowa Washington Twp. Moist area along the south s... A. Hayden 11,425 1938-10-22
Araceae
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
Asteraceae
GH: 02172200 Carduus acanthoides Linnaeus USA: Iowa [data not captured] A. Hayden 10849 1938-7-23
GH: 02020616 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Iowa [data not captured] A. Hayden 10844 1938-8-13
GH: 01834324 Lactuca canadensis Linnaeus USA: Iowa [data not captured] A. Hayden 10797 1938-6-25
Brassicaceae
GH: 00960581 Arabis hirsuta pycnocarpa (M. Hopkins) Rollins USA: Iowa [data not captured] A. Hayden 11255 1938-7-17
GH: 01181887 Boechera dentata (Rafinesque) Al-Shehbaz & Zarucchi USA: Iowa [data not captured] A. Hayden 11264 1938-4-26
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
Fabaceae
GH: 02131970 Pediomelum esculentum (Pursh) Rydberg USA: Iowa [data not captured] A. Hayden 11306 1938-6-9
GH: 02136166 Strophostyles helvola (Linnaeus) Elliott USA: Iowa [data not captured] A. Hayden 11313 1938-10-1
GH: 02344971 Vicia americana Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 11316 1938-4-26
Plantaginaceae
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: 01801766 Plantago aristata Michaux USA: Iowa [data not captured] A. Hayden 11478 1938-6-26
Polygonaceae
GH: 02364737 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 11334 1938-8-10