Usnea subfloridana Stirt. (Parmeliaceae) and Its Related Species in Eastern Asia

Abstract

Usnea subfloridana Stirt. and its related species in eastern Asia are taxonomically revised. Five species, U. florida, U. fulvoreagens, U. glabrescens, U. wasmuthii as well as U. subfloridana are recognized. While U. florida forms no asexual propagule, the other four are sorediate. Soralia morphology is particularly useful for distinguishing these four species, since its origin and development are different. Among the five species treated here, U. fulvoreagens and U. wasmuthii are newly recorded for eastern Asia.