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Moss China | Family List | Moss China V. 1 | Dicranaceae

16. Dicranoweisia Lind. ex Milde, Bryol. Siles. 48. 1869.


Plants usually small, dull, dark green or yellowish brown, in dense tufts. Stems erect, branched, often radiculose at base; central strand present. Leaves flexuose, crispate when dry, patent to spreading when moist, lanceolate-subulate, gradually tapered to an acuminate apex; margins entire, recurved above the middle; costa narrow, subpercurrent; upper leaf cells small, subquadrate, smooth or sometimes longitudinally ridged (striate); basal cells elongate, rectangular or linear, subquadrate toward the margins; alar cells differentiated or absent. Autoicous. Perichaetial leaves convolute-sheathing at base, with or without pointed apices. Setae solitary, straight and elongate; capsules erect, symmetric, oblong-ovoid to cylindric, more or less wrinkled when dry; opercula obliquely long-rostrate; annuli present or none; stomata present; peristome teeth 16, inserted well below the mouth, undivided or slightly forked, often papillose throughout. Calyptrae cucullate, smooth, entire at base. Spores spherical, smooth or nearly so.

Dicranoweisia is distributed in nearly all alpine-temperate regions of the world, including Antarctica. The genus consists of about twenty-five species in the world. Three species are known from China.

1 Inner perichaetial leaves with a long-sheathing base and a shortly attenuate or obtuse apex   2 Dicranoweisia crispula
+ Inner perichaetial leaves with a short-sheathing base and an elongate, subulate, and pointed apex   (2)
2 (1) Leaf cells smooth; alar cells not differentiated   1 Dicranoweisia cirrata
+ Leaf cells finely striate; alar cells differentiated   3 Dicranoweisia indica

Lower Taxa


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