Degelius, G 1954: The lichen genus Collema in Europe: Morphology, Taxonomy, Ecology. - Symbolae Bot. Upsal.13(2): 1-499. [RLL List # 14 / Rec.# 4157] Keywords: COLLEMA/ KEY/ EUROPE/ NEW TAXA
Abstract: 2 tab. 73 fig. 27 pl. [35 species recognized; many new synomyms; keys. New: Collema tenax var. ceranoides (Borr.) comb. nov., var. expansum var. nov., var. vulgare (Schaer.) comb. nov. with fo. papulosum (Schaer.) comb. nov., var. crustaceum (Kremp.) comb. nov., var. diffracto-areolatum (Schaer.) comb. nov., var. corallinum (Mass.) comb. nov., C. bachmanianum (Fink) comb. nov., var. millegranum var. nov., C. conglomeratum var. crassiusculum (Malme) comb. nov., var. corynesporum (Malme) comb. nov., C. polycarpon var. corcyrense fo. isidiatum fo. nov., C. callopsimum var. callopismum fo. granulosum fo. nov., var. rhyparodes (Nyl.) comb. nov., C. occulatum var. populinum (Th. Fr.) comb. nov., C. multipunctatum sp. nov., C. euthallinum (Zahlbr.) comb. nov., C. parvum sp. nov., C. crispum var. metzleri (Arn.) comb. nov., C. cristatum var. marginale (Huds.) comb. nov., fo. marginale subf. papulosum (Ach.) comb. nov., fo. undulatum (Ach.) comb. nov. with subf. isidiatum subf. nov., C. undulatum var. granulosum var. nov., C. subnigrescens sp. nov., fo. caesium (Clemente) comb. nov., C. curtisproum sp. nov., C. ryssoleum fo. pruinosum fo. nov., C. subfurfuraceum sp. nov., Leptogium subtorulosum (Nyl.) comb. nov.]