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

18. Holomitrium Brid., Bry. Univ. 1: 226. 1826.


Plants small to robust, yellowish green to brownish green, in dense tufts. Stems erect, usually branched; central strand present. Leaves lanceolate, erect at base, clasping or keeled, crispate to curled when dry, erect spreading when moist; margins entire to crenulate or serrulate; costa percurrent to excurrent, smooth at back or denticulate at the apex; upper cells small, rounded-quadrate, thick-walled, smooth; basal cells elongate-rectangular, thin-walled; alar cells differentiated, small. Dioicous or autoicous. Perichaetial leaves sheathing to convolute at base, long setaceous toward the apex. Setae erect, 1–2 per perichaetium; capsules erect, oblong-ovoid to cylindric, symmetric or slightly curved, asymmetric, smooth; opercula long-rostrate; annuli none; peristome teeth 16, inserted below the mouth, perforate along the median line or divided to the middle, papillose. Calyptrae cucullate, entire at base. Spores spherical, finely papillose.

Presently, 52 species are recognized in Holomitrium. The genus is primarily distributed in the tropical regions of the world, with only a few species found outside the tropics. Two species are known from China.

1 Leaves appressed to imbricate when dry, abruptly narrowed from an oblong-ovate base to a long, setaceous apex; brood bodies usually clustered at stem apex   1 Holomitrium cylindraceum
+ Leaves crispate when dry, gradually narrowed from an oblong-ovate base to a short, narrowly acuminate apex; brood bodies absent   2 Holomitrium densifolium

Lower Taxa


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