Fissidens

Fissidens is the only genus of haplolepideous mosses (Dicranidae) in the family Fissidentaceae. It contains over 480 species.

==Morphology== Fissidens is an acrocarpous genus characterized by the presence of vaginal lamina on their leaves, which may be palmately or pinnately arranged. Each leaf consists of one dorsal lamina, which is the farthest away from the central strand, and two vaginal lamina which clasp the central strand. They are connected via a single costa, though this costa is infrequently nearly absent.