5. Encalypta sibirica (Weinm.) Warnst. 西伯利亚大帽藓 xi-bo-li-ya da-mao xian
Hedwigia 53: 316. 1913. Encalypta ciliata Hedw. var. sibirica Weinm., Bull. Soc. Imp. Naturalistes. Moscou 18: 448. 1845. Type. Russia: Siberia.
small to medium-sized, 1–2 cm high, yellowish green above, brownish below, in tufts. Stems
simple; central strand not well developed. Leaves
incurved and irregularly twisted when dry, erect-spreading when moist, 2.5–3.0 mm long, oblong to ovate-oblong, apex abruptly narrowed to a hyaline or yellowish hair-point, hair-points about 0.1 mm long, nearly smooth; margins narrowly recurved at both sides of middle and basal portion; costa excurrent, slender in upper part of leaf; upper cells irregularly rounded-quadrate, 14–16 µm
wide, densely papillose, obscure; basal cells 35–64 µm
× 14–16 µm
, with distinctly thickened, reddish brown transverse walls, several rows of marginal cells linear, thin-walled. Autoicous
. Perichaetial leaves
similar to upper stem leaves. Setae
erect, yellowish or yellowish brown, 0.8 mm long, twisted above when dry; capsules cylindric, yellowish, 2.5–3.0 mm long, smooth; peristome absent; annuli undifferentiated; opercula with a straight beak. Calyptrae
cylindric to narrowly cylindric, golden to golden brown, covering the whole capsule, papillose throughout except fringe bases, rostrum long, erect, 0.3–0.4 length of calyptrae. Spores
in diameter, proximal surface with numerous radial plicae, distal surface with regulate pattern of protuberances.