Habitat:
in the narrow open rocky-sandy floodplain of river. Associates included Carex stricta, Calamagrostis canadensis, Galium boreale, G. obtusum, Platanthera flava, Deschampsia cespitosa, Oenothera perennis, Spartina pectinata, Sphenopholis intermedia,. Andropogon gerardii, Hierochloe odorata, Baptisia leucantha, Juncus nodosus, J. dudleyi, J. filiformis, and Poa palustris. Common