Toninia tristis (Th. Fr.) Th. Fr.

Toninia tristis (Th. Fr.) Th. Fr.

Lich. Scand. (Upsaliae) 1, 2: 341 (1874).

Basionym: Lecanora tristicolor Th. Fr., Lich. Scand. (Upsaliae) 1, 1: 269 (1871).

Note: There is a Toninia tristis subsp. pseudotabacina Timdal, Op. bot. 110: 113 (1991) (Holotype UPS, Massalongo, Lich. It. Exs. 52, On soil: Italy).