Brodo, IM 1995: Notes on the lichen genus Placopsis (Ascomycotina, Trapeliaceae) in North America. - In: Knoph, J-G/Schrüfer, K/Sipman, HJM (eds.): Studies in Lichenology with Emphasis on Chemotaxonomy, Geography and Phytochemistry. Festschrift Christian Leuckert. . Bibliotheca Lichenologica, J. Cramer, Berlin, Stuttgart pp. 59-70. [RLL List # 159 / Rec.# 2482] Keywords: ALASKA/ BRITISH COLUMBIA/ PHYTOGEOGRAPHY/ PLACOPSIS/ TRAPELIA/ TRAPELIACEAE
Abstract: 9 fig. [New: Placopsis roseonigra Brodo sp. nov. is described from Alaska and British Columbia. Includes a discussion of the family (Trapeliaceae) and genus characters, and a key to the three species of Placopsis known for North America.]