Cat. Lich. Univers. 7: 424 (1931). Basionym: Lecidea tristiuscula Nyl., in Crombie, J. Linn. Soc., Bot. 15: 190 (1876) [1877].
Basionym: Lecidea tristiuscula Nyl., in Crombie, J. Linn. Soc., Bot. 15: 190 (1876) [1877].