Coefficient of Conservatism:
Coefficient of Wetness:
P. pubescens of Michigan Flora
Common farther south; only adventive in Michigan, as a weed of gardens and disturbed areas. First collected in 1906 in St. Clair Co.
Generally recognizable by its smaller flowers and calyces, together with shorter anthers and pedicels, although an exception may occur to any feature mentioned in the key. Sometimes recognized as P. pubescens Porter & J. M. Coult. var. grisea Waterf., but we follow Martínez (1993).