Monographs Details: Hookeriopsis
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 - Slender to fairly robust plants in green, yellowish, or brownish mats, usually shiny. Stems creeping, irregularly branched; branches horizontal. Leaves somewhat asymmetric (the lateral leaves ± spreading and often complanate, sometimes secund or falcate-secund), ovate-lanceolate and acuminate or oblong to lingulate and short-pointed; margins unbordered, plane, usually sharply serrate above; costae 2, 1/2-2/3 the leaf length; cells oblong-hexagonal to linear, smooth or papillose because of projecting upper ends. Perichaetial leaves subulate from a broader base. Setae ± elongate, reddish, mostly smooth; capsules inclined to horizontal, oblong-cylindric with a short, thick, tapered neck, contracted below the mouth when dry, brown or red-brown, smooth; annulus none; operculum long-rostrate from a convex-conic base; exostome teeth lanceolate, red-brown, furrowed, cross-striolate, trabeculate; endostome yellow, finely papillose or nearly smooth, with a high basal membrane, keeled, lanceolate segments as long as the teeth, and no cilia. Spores small, spherical. Calyptrae fringed at base, mostly smooth.
Buck (1987a) split away from Hookeriopsis three genera, Brymela, Thamniopsis, and Trachyxiphium.