Harvard University Herbaria & Libraries

Asteraceae
GH: 02351769 Erigeron strigosus Muhlenberg ex Willdenow USA: Iowa [data not captured] A. Hayden 9792 1939-6-25
Brassicaceae
GH: 01097867 Camelina microcarpa Andrzejowski ex de Candolle USA: Iowa [data not captured] A. Hayden 9598 1939-5-11
Commelinaceae
GH: 02098080 Tradescantia tharpii E. S. Anderson & Woodson USA: Iowa [data not captured] A. Hayden 9567 1939-5-11
Cyperaceae
GH: 02371790 Carex annectens (E. P. Bicknell) E. P. Bicknell USA: Iowa [data not captured] A. Hayden 9220 1939-6-23
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: 01775928 Carex typhina Michaux USA: Iowa [data not captured] A. Hayden 9207 1939-10-7
Juncaceae
GH: 02099584 Juncus balticus littoralis (Engelmann) Snogerup USA: Iowa [data not captured] A. Hayden 746 1939-7-2
GH: 02102344 Juncus dudleyi Wiegand USA: Iowa [data not captured] A. Hayden 233 1939-7-25
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: 01937693 Cypripedium candidum Muhlenberg ex Willdenow USA: Iowa Highland Twp., Sec. 24. about 5 miles east o... A. Hayden 9648 1939-5-25
Phytolaccaceae
GH: 01681420 Phytolacca dodecandra L'Heritier USA: Iowa [data not captured] A. Hayden 9647 1939-6-26
Plantaginaceae
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: 01805445 Veronica arvensis Linnaeus USA: Iowa [data not captured] A. Hayden 9631 1939-5-1
Polygonaceae
GH: 02007919 Polygonum tenue Michaux USA: Iowa [data not captured] A. Hayden 9392 1939-10-31
GH: 02006458 Rumex altissimus Alph. Wood USA: Iowa [data not captured] A. Hayden 9391 1939-7-14
Rubiaceae
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
Typhaceae
GH: 00933252 Typha latifolia Linnaeus USA: Iowa [data not captured] A. Hayden 9320 1939-7-2