1. Entosthodon drummondii Sullivant, Musc. Hepat. U.S. 156b. 1856.
Entosthodon drummondii var. obtusifolius Holzinger; Funaria drummondii (Sullivant) Lindberg
Plants 1-5 mm, yellowish to brownish green. Leaves curved inward when dry, oblong ovate to obovate, somewhat concave, imbricate, mostly 1.5-2 mm; margins faintly serrulate to entire; apices broadly acute; costa percurrent or ending 1-3 cells before the apex; basal laminal cells rectangular (70-90 × 25-35 µm), distal cells oblong-hexagonal, marginal cells longer, often forming a yellowish border. Seta 10-20 mm, straight, not hygroscopic. Capsule ovoid-pyriform from a short apophysis, 1-1.4 mm, contracting when dry and empty; exothecial cells thickened, narrowly oblong and transversely elongate in 5-7 rows proximal to the mouth; operculum nearly flat, becoming convex when moistened; peristome double, exostome teeth brown, lanceolate, vertically striate throughout and sometimes perforate along the median line, endostome a low papillose membrane. Calyptra cucullate, long-beaked, inflated around the capsule, large, smooth. Spores 27-36 µm, weakly bacculate-insulate, some faintly ridged, yellow-brown.
Disturbed, closely packed, usually somewhat sandy, soils in damp places; low to moderate elevations; Ala., Calif., Fla., Ga., La., Miss., N.C., Ohio, S.C., Tenn., Tex.