Habitat:
Old, unused quarry in Prairie du Chien dolomite, for crushed road gravel. Populus deltoides, Salix exigua and species more adapted to dry habitats such as Verbena stricta, Cornus racemosa, Eupatorium altissimum, Monarda fistulosa.
Occurrence Remarks:
Abundant on bare flat gravelly area and sometimes forming dense stands, often with Poa compressa.