Ahti, T 1980: Taxonomic revision of Cladonia gracilis and its allies. - Annales Botanici Fennici17: 195-243. [RLL List # 108-1 / Rec.# 313] Keywords: CLADONIA/ NEW TAXA/ KEY
Abstract: 35 figures. [Recognition of seven species on a world-wide basis; key. New: Cladonia gracilis subsp. nigripes (Nyl.) comb. nov., C. gracilis subsp. vulnerata subsp. nov., C. gracilis subsp. tenerrima subsp. nov., C. gracilis subsp. turbinata (Ach.) comb. nov., C. cornuta subsp. groenlandica (E. Dahl) comb. nov., C. ecmocyna subsp. intermedia (Robbins) comb. nov., and C. squamosissima (Mull. Arg.) comb. nov. Includes extensive discussion of synonyms and exclided names.]