in Printzen, Biblthca Lichenol. 60: 204 (1995).
Basionym: Lecidea perparvula Nyl., Flora 64: 532 (1881).
Chemistry: Material insufficient for TLC. Pigments Elachista-brown in epithecium (K+ dissolving, HNO3-); Sedifolia-grey (K+ violet) in thallus, upper hymenium (often very faint) and pycnidial walls (Coppins 2008: 23).
Ecology: On wood.