Leucobryaceae

Leucobryaceae is a family of haplolepideous mosses (Dicranidae) in the order Dicranales.

==Description== Members of the family grow small to large cushions. Species are characterized by having thick, whitish leaves with a large, expanded costa. It has been suggested that the characteristic pale color exhibited by some species is caused by air bubbles in the leucocysts, and the presence of air in the leaf is assumed characteristic of the Leucobryaceae.