Phaseolus polystachios var. polystachios Fernald (redirected from: Phaseolus polystachios var. aquilonius)
Family: Fabaceae
[Phaseolus polystachios var. aquilonius Fernald,  more...]
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From Flora of Indiana (1940) by Charles C. Deam

Infrequent in the southern part of the state as indicated on the map. Probably in a few counties farther north but the reports from the northern part of the state I think should be referred to some other species. I have the Van Gorder specimen from Noble County and it is Amphicarpea bracteata. Wilson says "Common" in Hamilton and Marion Counties. This report should be referred to one of the Amphicarpea species which are frequent and which he does not report. Peattie's and Pepoon's reports from Lake County may be correct. Since having seen large, entire-leaf forms of Strophostyles helvola labeled as this species, I suspect that some of our reports have been wrong determinations. The lower surfaces of the leaflets of Phaseolus polystachyus are velvety to the touch and those of Strophostyles helvola are not.