Typical marilandica is a perennial that ranges widely across western (montane) and northern states plus adjacent Canada; it extends down the Appalachians to Ga. but is unknown in Ky. (W). Var. petiolulata is disjunct in southeastern states east of the Mississippi, mostly on acid soils of Appalachian regions and the Coastal Plain (K). In Ky. it is known only from thin disturbed woods and rights-of-way on relatively broad sandy ridges of the Cumberland Plateau. This taxon deserves further investigation and may deserve species status, but the only difference noted in existing literature is that lower leaves have longer petiolules (F, W).