Branches elongate, usually branched. Leaves broadly acute to short-acuminate, wide-spreading when wet, mostly 1 mm, margins plane; costa sometimes laterally spurred, rarely 2-fid at tip. Interior perichaetial leaves mostly 2--2.3 mm, awns distinct, nearly smooth to denticulate, about 1/5 length of expanded portion of leaf. Exostome teeth narrowly triangular. Spores granular.

Capsules mature Apr. Twigs, branches, and tree trunks in humid forests; 0 m; Fla.; Mexico; West Indies; Central America; South America; Asia.

Schoenobryum concavifolium is very rare in the flora area, where it is known only from a few specimens from Collier County, in southern Florida. Its presence in the flora area was undetected until recently (W. R. Buck 1994). The plants are firm when dry and often have a shrub-like aspect due to the erect clustered branches. The terminal perichaetia give the branch tips a club-like appearance. In general the plants are quite similar to those of Cryphaea filiformis but differ in their terminal perichaetia, single peristome, and the awns of the perichaetial leaves only about 1/5 the length of the expanded portion of the leaf. The two species have been collected growing together. In Cryphaea filiformis, also a rare moss of southern Florida, the perichaetia are lateral, the peristome is double, and the awns of the perichaetial leaves are about 1/2 the length of the expanded portion of the leaf.

Editor's note: Rao (2001) has recently published a paper of relevance to the floral representation of this family.