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Search for collectorid:[43256] and year collected:[1937]
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Asteraceae
GH: 01835018 Lactuca tatarica (Linnaeus) C. A. Meyer USA: Iowa [data not captured] A. Hayden 10,595 1937-7-15
Betulaceae
A: 02194933 Betula papyrifera Marshall USA: Iowa [data not captured] A. Hayden 10,308 1937-9-13
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
Brassicaceae
GH: 01548594 Lepidium draba Linnaeus USA: Iowa [data not captured] A. Hayden 7045 1937-6-23
Cactaceae
GH: 01875664 Opuntia humifusa (Rafinesque) Rafinesque USA: Iowa Center Twp., Sec. 21. along Village Creek in... A. Hayden 4085 1937-10-13
Ceratophyllaceae
GH: 02073268 Ceratophyllum demersum Linnaeus USA: Iowa [data not captured] A. Hayden 10,127 1937-7-15
Fabaceae
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
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
Plantaginaceae
GH: 02001921 Penstemon albidus Nuttall USA: Iowa [data not captured] A. Hayden 9033 1937-7-23
GH: 01803533 Plantago patagonica Jacquin USA: Iowa [data not captured] A. Hayden 10064 1937-6-21
Poaceae
GH: 01815299 Tripsacum dactyloides (Linnaeus) Linnaeus USA: Iowa [data not captured] A. Hayden 9238 1937-10-4
Polygonaceae
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: 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
Potamogetonaceae
GH: 01688799 Potamogeton nodosus Poiret USA: Iowa [data not captured] A. Hayden 10,129 1937-8-20
GH: 01746377 Potamogeton richardsonii (A. Bennett) Rydberg USA: Iowa [data not captured] A. Hayden 10,113 1937-7-30
Rubiaceae
GH: 02359009 Galium aparine Linnaeus USA: Iowa [data not captured] A. Hayden 5059 1937-5-17