Family: Leucobryaceae

Diagnosis: Plants in pale, greenish, whitish or brownish tufts. Leaves crowded, erect to squarrose-recurved, sometimes flexuose or incurved to falcate-secund, thick and fleshy, lanceolate to ligulate from a somewhat broader base; costa filling the leaf apex and most of the base, consisting of a ± median layer of small chlorocysts enclosed on both surfaces by 1 or more layers of large, empty leucocysts; chlorocysts in surface view loosely reticulate in arrangement and rectangular or bead-like, in section 3-4 angled; leucocysts rectangular, with 1 or more large proes on connecting walls, in section not or slightly bulging; lamina constricted to the leaf base and consisting of 1-20 rows of hyaline cells on either side of the costa.. Setae single, generally straight; capsules immersed or exerted, often strumose, usually ribbed when dry; annulus usually none; operculum short- to long-rostrate; peristome single (or absent), of 8 or 16 lanceolate, bifid teeth, vertically striloate, papillose or smooth. Calyptra mitrate or cucullate, naked, rarely ciliate-fringed at base. Spores lightly papillose.