Leptophascum J. Guerra & M. J. Cano, 1989.

Leptophascum is exclusively a plant of disturbed soil, especially soil in urban areas that becomes wet from seepage or dripping. It is unique among local mosses in having smooth laminal cells but marginal cells that are unipapillose and give that margin a crenulate appearance. Until very recently Leptophascum leptophyllum was placed in the genus Chenia.
see key to Tortula Etc.

Species included:
Leptophascum leptophyllum (C. Müller Hal.) J. Guerra & M. J. Cano