Monographs Details: Atrichum
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:Polytrichaceae
Scientific Name:Atrichum
Description:Genus Description - Plants small to medium-sized, in loose, yellowish- to dark-green tufts. Leaves crisped and contorted when dry, erect-spreading when wet, lacking a differentiated sheath, oblong-lanceolate to linear, with an acute apex, commonly transversely undulate and toothed along the margins, bordered by 1 or more rows of linear, thick-walled cells; lamina densely to laxly areolate, with median cells rounded-quadrate to transversely elongate-hexagonal; median basal cells short-rectangular; lamellae varying in number and height but confined to the nerve. Dioicous or monoicous. Setae 1 to several from the same perichaetium; capsules cylindric, lacking a basal constriction and stomata; exothecium smooth; peristome teeth 32, simple, linear, crowded, not strongly colored. Calyptrae naked or hispid to sparsely ciliate at the tip.