Ahti, T 1983: Taxonomic notes on some American species of the lichen genus Cladonia. - Annales Botanici Fennici20: 1-7. [RLL List # 118 / Rec.# 319] Keywords: CLADONIA/ NORTH AMERICA/ NEW TAXA/ OWN/ SOUTH AMERICA
Abstract: 2 figures. ["Cladonia spiculata (Ach.) Ahti, comb. nova, is the correct name for C. wrightii A. Evans, as is C. gracilenta Tuck. for C. metalepta Nyl., and C. sobolescens Nyl. ex Vainio for C. clavulifera Vainio in Robbins. The name C. calycantha Delise ex Nyl. belongs to a little known Andean taxon, which is adequately described for the first time, and the widespread C. calycantha auct. is referred to C. rappii A. Evans var. exilior (des Abb.) Ahti, comb. nova. The European reports of C. rappii are based on C. cervicornis (Ach.) Flotow subsp. pulvinata (Sandst.) Ahti, comb. nova. (contains psoromic acid)."].
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