Fissidens imbricatus Britton & E. B. Bartram 1936

Fissidens imbricatus Britt. & Bartr.; E. Bartr
Jour. Wash. Acad. 26: 7. 1936.
Plants gregarious to densely cespitose; stems 5-10 mm. high, contorted, branching, densely foliate; leaves closely imbricated, rigid, the upper narrowly lanceolate, acute, up to 2 mm. long, the costa subflexuous, percurrent, the margins crenulate by protruding cell-angles, wholly unbordered; dorsal lamina very narrow, not reaching the leaf-base; vaginant laminae reaching three-fourths to nine-tenths the length of the leaf; upper leaf-cells hexagonal, about 10 ;*, turgid, smaller at margias, very smooth, larger at base, up to 16 ju, autoicous; seta geniculate, red, about 9 mm. long; capsule inclined to arcuate, asymmetric, the urn about 0.75 mm. long; operculum rostrate; peristome-teeth 0.33 mm. long, forked; spores very smooth, 10-13 /a in diameter.
Type locality: Schwallenburgh, St. Anne's Parish, Jamaica (C. R. Orcutt 3942a), Distribution: Jamaica.