Harvard University Herbaria & Libraries

Asteraceae
GH: 00988547 Artemisia ludoviciana Nuttall USA: Iowa Meadow Twp., Sec. 31; 2 miles north of Spenc... A. Hayden 10712 1933-8-23
GH: 02021146 Cirsium altissimum (Linnaeus) Sprengel USA: Iowa [data not captured] A. Hayden 454 1933-8-7
Brassicaceae
GH: 01548646 Lepidium draba chalepense (Linnaeus) Thellung USA: Iowa [data not captured] A. Hayden 9602 1933-5-15
Chenopodiaceae
GH: 01783223 Oxybasis rubra (Linnaeus) S. Fuentes, Uotila & Borsch USA: Iowa [data not captured] A. Hayden 4013 1933-7-10
Plantaginaceae
GH: 02212995 Chelone glabra Linnaeus USA: Iowa [data not captured] A. Hayden [data not captured] 354 1933-9-1
Polygonaceae
GH: 02364382 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3057 1933-7-7
GH: 02364378 Persicaria amphibia (Linnaeus) Delarbre USA: Iowa [data not captured] A. Hayden 3057 1933-7-7
GH: 02364744 Persicaria coccinea (Muhlenberg ex Willdenow) Greene USA: Iowa [data not captured] A. Hayden 5098 1933-9-6
GH: 02363068 Persicaria hydropiper (Linnaeus) Spach USA: Iowa [data not captured] A. Hayden 3072 1933-8-23