Tibell, L 1975: The Caliciales of boreal North America. Taxonomy, ecological and distributional comparisons with Europe, and ultrastructural investigations in some species. - Symbolae Bot. Upsaliensis21(2): 1-128. [RLL List # 92-86 / Rec.# 18593] Keywords: CALICIALES/ NEW TAXA/ NORTH AMERICA/ KEY
Abstract: 39 fig. 2 tab. [52 species of which 25 are new to North America; keys. New: Calicium parvum sp. nov., Chaenothecopsis eipthallina sp. nov., C. debilis (Turn. & Borr.) comb. nov., C. subpusilla (Vain.) comb. nov.; Phaeocalicium curtisii (Tuck.) comb. nov.]