Sancho, LG/ Kappen, L/ Schroeter, B 1992: The lichen genus Umbilicaria on Livingston Island, south Shetland Islands, Antarctica. - Antarctic Science4(2): 189-196. [RLL List # 149 / Rec.# 16198] Keywords: ANTARCTICA/ BIOGEOGRAPHY/ THALLOCONIDIA/ UMBILICARIA
Abstract: 4 fig. [Five species are reported from the area. New to Antarctica: Umbilicaria africana, U. krascheninnikovii, U. nylanderiana.]