15. Dicranella subulata (Hedw.) Schimp. 偏叶小曲尾藓 pian-ye xiao qu-wei xian
Coroll. Bryol. Eur. 13. 1856. Dicranum subulatum Hedw., Sp. Musc. Frond. 128. 1801. Type. Sweden.
Dicranella secunda Lindb., Acta Soc. Sci. Fenn. 10: 244. 1872, nom. illeg. incl. spec. prior.
Plants rather small, 3–10(–15) mm high, yellowish green, in tufts. Stems erect, simple or branched, somewhat radiculose below. Leaves up to 2 mm long, loosely erect to falcate-secund, lanceolate, gradually to rather abruptly narrowed from a triangular to oblong-ovate base to a subulate to long setaceous acumen; margins plane, entire or sometimes finely serrulate at the apex; costa stout, short- to long-excurrent, occupying ca.1/5 the leaf base width; upper cells linear-rectangular, 30–40 µm × 4–5 µm, lower cells broader and shorter. Dioicous. Perichaetial leaves somewhat differentiated, up to 3 mm long, flexuose-spreading to squarrose, abruptly narrowed from an oblong-ovate, sheathing base to a long, subulate acumen. Setae straight, 8–13 mm long, reddish, becoming dark with age; capsules inclined to nodding, shortly cylindric, curved, asymmetric, not strumose, furrowed when dry; opercula slenderly long-rostrate, curved, ca. 1 mm long; annuli compound, deciduous; peristome teeth divided to the middle, vertically striate below, reddish. Spores 15–18 µm in diameter, finely papillose.