Pterobryaceae
Pireella Cardot
Kingdom: Plantae Rank: Genus Parent: Pterobryaceae Status: Valid
Morphological Description
Diagnosis: Plants small to robust, scattered or loosely tufted, green or yellow-green. Secondary stems irregularly branched to pinnately frondose above a stipitate base. Gemmae frequent. Stipe leaves appressed to squarrose, lanceolate-acuminate; leaves of secondary stems and branches erect-spreading, concave, ovate to oblong-lanceolate, acute to acuminate; costa single; cells rounded-oval to rhombic or oblong-linear, thick-walled, smooth or papillose at back because of projecting ends; alar cells poorly differentiated or quadrate in few to several rows. Setae short or elongate, smooth or ± papillose above; capsules often immersed but occasionally exerted, oblong-ovoid; peristome double. Calyptra cucullate or mitrate, mostly pilose, smooth. Spores spherical.