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Moss China | Family List | Moss China V. 2 | Pottiaceae

35. Weisiopsis Broth., Öfvers. Förh. Finska Vetensk.-Soc. 62A(9):7. 1921.


Plants very small, 1.5–4.0 mm high, green to yellowish green, in low dense tufts. Stems erect, simple, rarely branched by new growth; central strand present. Leaves usually tubulose, erect-curved when dry, spreading when moist, oblong-ligulate to spathulate, often plicate near base, bluntly apiculate or rounded-obtuse at apex; margins plane or broadly and weakly incurved, entire or finely crenulate by projecting papillae; costa slender, subpercurrent to percurrent or shortly excurrent in an apiculus; in cross section only dorsal stereid band present; upper leaf cells small, rounded hexagonal, rather thin-walled to thick-walled to weakly trigonous, papillae absent or sometimes bulging or mammillose; basal cells differentiated, enlarged, rectangular, thin- to thick-walled, smooth. Autoicous. Perichaetial leaves not much differentiated. Setae very short, 3–7 mm long, yellowish; capsules erect to suberect, ovoid to cylindrical; annuli differentiated, of 2–3 rows of strongly vesiculose cells, deciduous; opercula conic-rostrate with a rather long beak; peristome teeth 16, short, erect, linear-subulate, faintly papillose or densely papillose. Calyptrae cucullate, smooth. Spores spherical, small, yellowish, usually smooth.

1 Leaves oblong-ligulate, bluntly apiculate; basal cells not very sharply differentiated from the cells above, upper cells rather large and thin-walled   1 Weisiopsis anomala
+ Leaves spathulate, rounded-obtuse; basal cells sharply differentiated from the cells above, upper cells very small, thick-walled   2 Weisiopsis plicata

Lower Taxa


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