Template:Degelius, 1974

• Degelius, G.B.F. 1974. The lichen genus Collema with special reference to the extra-European species. Symbolae Botanicae Upsalienses 20(2): 1–215. RLL (PDF)  
  • Find all Wikispecies pages which cite this reference.
  • RLL List # 92-16 / Rec.# 4179 – Recent Literature on Lichens