Nomenclature and typification in the genus Usnea (lichenized Ascomycetes) -: II.: Usnea fallax and Usnea paradoxa

Continued work on the angulose species of the genus Usnea has led to the discovery that the names Usnea fallax Motyka and U. paradoxa (Zahlbruckner) Motyka have been confused and incorrectly typified. Thus, here the following changes are implied: Usnea angulata Acharius var. paradoxa Zahlbruckner is lectotypified and placed in synonymy with U. fallax Motyka; the authorship of U. paradoxa (Zahlbruckner) Motyka should be cited as U. paradoxa Motyka; and U. paradoxa Motyka is lectotypified. The corrected use of both names is presented and the type material is illustrated.