Monographs Details: Drummondia
Authority: Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)
Description:Genus Description - Plants of medium size, in dense, dull-green mats on trees, rarely on rocks. Stems creeping, with numerous, short, erect to curved, simple or forked branches. Brood bodies none. Stem leaves spreading when dry, ± ovate-lanceolate to cordate, acuminate. Branch leaves erect-appressed and stiff when dry, canaliculate-keeled, oblong or lanceolate, obtuse, acute, or cuspidate; margins entire, usually erect; costa strong, ending in or near the apex; upper cells small, ± rounded-quadrate, thick-walled, smooth; basal cells rectangular to quadrate. Dioicous or autoicous. Perigonia large, budlike, lateral or terminal. Perichaetial leaves usually longer, often clasping the seta. Setae up to 10 mm long; capsules fully exserted, smooth, ovate to oblong, without a neck; operculum long-rostrate, suberect; stomata absent or superficial in the lower portion of the urn; peristome consisting of 16 rudimentary, truncate, smooth teeth often forming a fused membrane. Spores multicellular, up to 100 µm in the longest dimension. Calyptrae cucullate, long-conic, smooth, naked. The genus occupies an isolated position in the Orthotrichaceae and can be placed in its own subfamily, the Drummondioideae.