Lichenogr. Eur. Reform.: 243 (1831). Type locality: USA, North Carolina, Forsyth Co., Salem, L. von Schweinitz s.n. (UPS - lectotype). Lectotypified by Ahti (1993: 82).
Type locality: USA, North Carolina, Forsyth Co., Salem, L. von Schweinitz s.n. (UPS - lectotype). Lectotypified by Ahti (1993: 82).