Sematophyllaceae

Diagnosis: Plants small to moderately robust, mostly yellow-green to golden, thin, often extensive mats. Stems creeping, freely but irregularly branched, the branches sometimes obscurely complanate-foliate. Stem and branch leaves similar, erect-spreading or falcate-secund, lanceolate to ovate-lanceolate, acute to acuminate-subulate, concave; margins subentire to serrate above, plane or sometimes recurved; costa short and double or absent; cells linear, unipapillose, usually thick-walled and porose, sometimes becoming shorter in the extreme apex, becoming thicker-walled and more conspicuously porose toward the insertion; alar cells greatly enlarged and inflated, oblong, often colored. Setae elongate but relatively short, reddish, curved just below the urn; capsules suberect to pendent, small, ± asymmetric, ovoid to cylindric; annulus not differentiated; operculum obliquely and slenderly long-rostrate; peristome double, exostome teeth shouldered, bordered, on the front surface with a zig-zag median line or a median furrow, cross-striolate below, coarsely papillose above. Calyptra cucullate, naked or very rarely sparsely hairy, smooth, roughened, or ridged above. Spores spherical, papillose.