Du Rietz,G E 1924: Flechtensystematische Studien IV. c. Was isst Borrera camtschadalis Ach.?. - Botaniska Notiser\Bot. Not.1924: 329-343. [Mattick Rec.# 16805] Keywords: EVERNIASTRUM\LEPTOGIUM\PARMELIA\XANTHOPARMELIA
Abstract: nomenclatural note on Parmelia (Xanthoparmelia) vagans and P. (Everniiformes) confusa, cirrhata.