A rare Phaeophyscia species, similar to the common P. endophoenicea and P. orbicularis, distinguished by rounded marginal soralia. It is epiphytic on deciduous trees with higher bark pH. The lichen grows on solitary trees and in open forests at lower to middle elevations. In central Europe, it is more abundant only in certain lower areas of the Alps and the Carpathians. In the Czech Republic, P. pusilloides is rare and had even been considered extinct until recently. Historically, it was collected in Třeboň (Nádvorník 1947, as P. suzae). Recent ca. 10 records come mainly from southern Moravia and central Bohemia.
Literature: Nádvorník J. (1947): Physciaceae Tchécoslovaques. – Studia Botanica Čechoslovaca 8: 69–124.taxonomic classification:
All records: 12, confirmed 11. One click on a selected square displays particular record(s), including their source(s).