Gelting, P 1954: The Rhizocarpon species with peltate areoles occurring in Europe and North America. - Bot. Tidskr.51: 71-92. [RLL List # 15 / Rec.# 6530] Keywords: RHIZOCARPON/ NORTH AMERICA/ EUROPE/ NEW TAXA
Abstract: 6 fig. [On Rhizocarpon arctogenum sp. nov., R. bolanderi (Tuck.) Herre, R. leptolepis Anzi, R. rittokense (Hellb.) Th. Fr.]