Plant medium-sized to large, loosely caespitose, dark green to yellow-green; terricolous. Stem erect, 8-12 mm long, simple; in section round, central strand large, inner cortical cells large, in 4-5 rows, thin-walled, outer cortical cells smaller, in 2-3 rows, thick-walled. Leaves larger above, when wet widespreading, when dry erect-appressed; obovate, 2.5-3.0 mm long, apex obtuse, cuspidate, base oblong, margins plane, entire below, strongly and sharply dentate or spinose above, teeth multicellular, directed forward, to 0.2 mm long, apical cell elongated. Costa strong, short excurrent, awn 0.3-0.6 mm long, smooth; in section round, bulging dorsally, guide cells 2, exposed ventrally, ventral stereid band absent, dorsal stereid band weak, 2-3 cells thick, dorsal surface cells larger than guide cells, thick-walled. Upper laminal cells somewhat variable in size and shape, mostly rectangular-rhomboidal, 45-100 µm long, 30-38 µm wide, walls thin, smooth; marginal cells and cells of teeth somewhat thickened; basal cells rectangular. Autoicous. Perichaetia at apex, perichaetial leaves similar to vegetative leaves, 2.0-2.5 mm long. Seta 6-7 mm long, yellowish; capsule ovoid, 1.5-2.0 mm long, constricted below mouth when dry, reddish yellow; exothecial cells rounded quadrate to rectangular or angular; stomata on lower urn, subphaneropore; peristome single, light yellow, teeth 16 in 8 pairs, triangular, weakly papillose, 0.45 µm high; operculum conic; calyptra campanulate, 3.0-3.5 mm long, hairy; spores rounded, 10-14 µm, more or less smooth, light yellow.
Home