Ahti, T 1978: Two new species of Cladonia from western North America. - The Bryologist81: 334-338. [RLL List # 101-2 / Rec.# 310] Keywords: CLADONIA/ NEW TAXA/ NORTH AMERICA
Abstract: 2 figures. [New: Cladonia thomsonii sp. nov., C. verruculosa (Vain.) comb. nov. Cladonia wainii Sav. and C. rangiformis Hoffm. are excluded from the North America lichen flora.]