Monographs Details: Lescuraea
Authority: Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)
Family:Leskeaceae
Scientific Name:Lescuraea
Description:Genus Description - Plants in loose or dense, rigid, green, yellowish, brownish, or red-gold, somewhat shiny mats. Stems freely branches short, suberect; paraphyllia numerous, linear and lanceolate. Stem and branch leaves similar, erect or subsecund when dry, erect-spreading when moist, ± biphcate, ovate or ovate-lanceolate, gradually and slenderly acuminate, decurrent; margins entire or serrulate above, recurved nearly to the apex; costa ending near the apex, smooth or serrulate at back above; upper cells elongate and sometimes sublinear, smooth or indistinctly papillose on the upper surface because of projecting ends; median basal cells elongate; alar cells subquadrate in numerous rows. Dioicous. Perichaetial leaves erect, sheathing at base, costate; cells elongate. Setae dark-red; capsules erect and symmetric (not curved), oblong-cylindric, red-brown; annulus none; operculum conic; exostome teeth united at the base, yellow-brown, smooth or papillose (not bordered, striolate, or trabeculate); endostome consisting of a low basal membrane, short, narrow, and irregular segments (not keeled), and no cilia. Spores finely papillose. Calyptrae smooth, naked.

Discussion:

Lescuraea is gametophytically much like a Pseudoleskea but differs in having a reduced, non-hypnoid peristome.

Lescuraea striata (Schwaegr.) B.S.G., known otherwise from south-central Europe, the Caucasus, and Siberia, was reported by Theriot from central Mexico (presumably in the Distrito Federal or nearby), at Monte Alegre {Antipovitch 77) and between Salazar and Lerma (Woronow 536). The only Mexican specimen seen, collected at Monte Alegre by Antipovitch, but 24 rather than 77 was so named by Theriot. It contains only a sterile Pohlia and several liverworts. O n the basis of phytogeographic improbability it seems better to reject the record, which in any case should go under the name Lescuraea mutabilis (Brid.) Hag.