Monographs Details: Calyptothecium wightii (Mitt.) M.Fleisch.
Authority: Buck, William R. 1987. Bryostephane Steereana: A Collection of Bryological Papers Presented to William Campbell Steere On The Occasion of His 80th Birthday. Mem. New York Bot. Gard. 45: 1-749.

Fleisch. is a unique plant in the genus. Its generic status has been misunderstood and it has been reported under various names. The confusion seems to be caused by the few, sterile collections of small and variable plants which lacked endostome segments. In 1965 I discussed the taxonomy of C. wightii, but more revisions are needed. In this paper further synonyms are added.