Elmeriobryum Brotherus
Plants with dorsal, lateral, and ventral stem leaves often different in shape and size. Stem leaves straight to falcate, ovate-, oblong- or narrowly lanceolate; margins recurved at base, serrate or serrulate, rarely entire distally, entire proximally; costae double; median laminal cells linear, thin- to thick-walled, smooth, rarely porose; alar cells differentiated, subquadrate to rectangular. Branch leaves smaller and narrower than stem leaves. Sexual condition dioicous. Interior perichaetial leaves oblong-lanceolate, filiform-acuminate, serrate, usually reflexed at apices. Seta long, smooth, usually sinistrosely twisted in proximal half and dextrorsely twisted distally when dry. Capsule inclined to horizontal, ovoid to cylindric; exothecial cells elongate-rectangular to subquadrate, rarely polygonal; operculum conic, sometimes with a short beak; peristome double, exostome teeth transversely smooth to striolate proximally, papillose distally on the external surface, papillose and with projecting trabeculae on the internal surface; segments of endostome teeth keeled, not split; cilia 2--4; basal membrane about 1/2 as high as exostome teeth. Spores finely papillose.
Species 20 (1 in the flora): nw North America; Asia (Bhutan, China, India, Indonesia, Japan, Korea, Nepal, Pakistan, Philippines, e Russia, Taiwan).
SELECTED REFERENCES
Ando, H. 1957. The first record of Gollania in North America. Bryologist 60: 326-335. Higuchi, M. 1985. A taxonomic revision of the genus Gollania Broth. (Musci). J. Hattori Bot. Lab. 59: 1--77.
