Plants large, somewhat scattered or forming large turfs, yellow-green; corticolous or terricolous. Primary stems long-creeping; secondary stem erect, 30-100 mm long, branches distichous above stipe, pinnate; in section oval, central strand absent, inner cortical cells thin-walled, yellowish, in 5-7 rows, outer cortical cells thick-walled, smaller, red-brown, in 3-5 rows; axillary hairs very short, 2 or 3 cells long, apical cell larger, brownish; paraphyllia absent; pseudoparaphyllia filamentous, 8-12 cells long, 2 or 3 cells wide at base. Leaves crowded, concave, spreading wet, somewhat appressed to spreading dry; stem leaves oblong to oblong-ovate, 2.5-4.0 mm long; acuminate; subcordate at base; margins broadly incurved above, entire; branch leaves similar to stem leaves although generally smaller. Costa absent, short and double or short and single, restricted to lower leaf, weak, smooth, hyaline; in section elliptical consisting of a group of 4 slightly smaller cells. Upper laminal cells linear-fusiform, homogeneous, 75-120 µm long, 7-8 µm wide, walls incrassate and pitted, smooth; basal cells + rectangular, forming distinct group across insertion, 25-50 µm long, 6-12 µm wide, brownish, walls thickened and pitted, smooth; alar cells not differentiated. Gemmae in leaf axils, filiform, of 6-10 cells, 55-175 µm long, brownish green, smooth. Dioicous. Perigonia gemmate, perigonial leaves ovate-cuspidate. Perichaetia green; perichaetial leaves ovate, long-acuminate, 4.5-5.5 mm long, leaf cells linear, thickened and pitted. Seta yellowish, smooth. Capsule immersed, erect, ovoid, 1.2-2.0 mm long, smooth, brownish; neck not differentiated; exothecial cells irregularly rectangular, walls thin, cells at mouth quadrate and darker; stomata not seen. Peristome single, yellow-red; prostome present; exostome teeth irregular, linear-lanceolate, smooth, to 400 µm high; endostome absent. Operculum conic-rostrate, 0.5 mm long. Calyptra small. Spores rounded, heterosporous, 25-48 µm, granulate, brown.
Home