Rhodora 27: 50 (1925). Type locality: USA, Massachusetts, Plymouth County, Wareham, C. A. Robbins s.n. (FH - lectotype). Lectotypification by Ahti (1993: 84).
Type locality: USA, Massachusetts, Plymouth County, Wareham, C. A. Robbins s.n. (FH - lectotype). Lectotypification by Ahti (1993: 84).