Trass, H 2000: The lichen genus Heterodermia (Lecanorales, Physciaceae) in Russia and adjacent territories [Samblikuperekond Heterodermia (Lecanorales, Physciaceae) Venemaal ja sellele lähedastel aladel]. - Folia Cryptogamica Estonica37: 93-108. [RLL List # 182 / Rec.# 21650] Keywords: HETERODERMIA/ PHYSCIACEAE/ RUSSIA/ USSR
Abstract: [Descriptions and discussions for 20 species occurring in the former USSR. New: Heterodermia hypoleuca var. divergens var. nov., H. isidiophora var. coralligera var. nov.]