Golubkova, NS/ Schapiro, IA 1979: Species generis Umbilicaria Hoffm. em Frey in URSS cresentes et examinatio earum chemotaxonomica. - Novitates Systematicae Plantarum non Vascularium (Academia Scientiarum URSS, Institutum Botanicum Nomine V. L. Komarovii)16: 133-153. [RLL List # 108-37 / Rec.# 6811] Keywords: UMBILICARIA/ USSR/ CHEMISTRY
Abstract: 9 tables. [Detailed chemical treatment of many taxa; in Russian.]