Homotypic Synonyms See Note

Basionym Name:
Psora tabacina var. tristis Th. Fr., Bot. Notiser(2): 38 (1865)

Homotypic synonyms:
Thalloidima triste (Th. Fr.) Vain., Acta Soc. Fauna Flora fenn. 53(no. 1): 135 (1922)
Thalloidima triste f. triste (Th. Fr.) Vain., Acta Soc. Fauna Flora fenn. 53(no. 1): 135 (1922)
Toninia tristis (Th. Fr.) Th. Fr., Lich. Scand. (Upsaliae)(2): 341 (1874)
Toninia tristis subsp. tristis (Th. Fr.) Th. Fr., Lich. Scand. (Upsaliae)(2): 341 (1874)