The troublesome genus Thamnolia (lichenized Ascomycota)

Abstract

A new neotypus is designated for Thamnolia vermicularis in accordance with the protologue. The taxonomy is best reflected by molecular evidence which recognizes three subspecies: the widespread subsp. vermicularis, and the geographically more restricted subsp. taurica (in the eastern Alps) and subsp. tundrae (in the Arctic region). The nomenclatural consequences resulting from these changes require that two new combinations are made.