Lichenogr. Eur. Reform.: 237 (1831).

Basionym: Scyphophorus sulphurinus Michx., Fl. Bor.-Amer. 2: 328 (1803).

Type locality: Canada ? ["America Septentrionalis"], A. Michaux s.n. (PC-Hue - lectotype; PC - isolectotype). Lectotypification by Ahti (1978).

Chemistry: Hexa-(α-hydroxyisovalerate) (Huneck & Yoshimura 1996: 145).