This is widespread in midwestern and northeastern states, but rare from Ky. and Tenn. to Del. and Va. (K) The only verified Ky. records are from ponds in EDMO, where it has been collected during 1980-2000 by M. Medley (WKY) and R. Seymour (pers. comm.), also ca. 2016 by B. Yahn (KSNPC). Other reports are probably based on colls., but details are unknown (F, BT). A related southern species, S. falcata Pursh (S. lancifolia var. media) was reported from Ky. by Fassett (1940) but is unlikely here, since it is concentrated in coastal regions (Cr, K, M).