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Published In: Revue Bryologique, nouvelle série 1: 192. 1928. (Rev. Bryol., n.s.) Name publication detail

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Acceptance : Accepted
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General Reference:

Notes     (Last Modified On 3/16/2009)
general taxon notes:
The genus Jaffueliobryum is mainly characterized by its broadly ovate to obovate leaves with long hyaline awns at the apex and with unistratose cells in cross section. It is closely related to Coscinodon. Jaffueliobryum consists of three species in the world, with its distribution predominantly found in the Northern Hemisphere. Z.-G. Tong (1963) first reported Jaffueliobryum latifolium Thér. from Nei Mongol. Later, X.-J. Li (ed., 1985) reported J. marginatum Thér. from Xizang. Recently, Churchill (1987) considered both species to be synonyms of J. wrightii. This species is found to have a disjunctive distribution in southwestern North America, northern Asia, and South America (Churchill 1987). At present, one species is recognized in China.


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4. Jaffueliobryum Thér.   缨齿藓属   ying-chi xian shu
Rev. Bryol., n.s. 1: 192. 1928.
Plants small to medium-sized, often glossy, grayish green to dark green, in dense cushions or tufts. Stems erect, remotely branched, more or less julaceous, with central strand in cross section. Leaves crowded, appressed, usually imbricate when dry, erect-spreading when moist, broadly ovate to obovate, abruptly narrowed to acute or rounded-obtuse at apex; margins plane or slightly incurved at leaf base, entire, often hyaline or sometimes appearing bordered; costa single, strong, excurrent, ending in a hyaline awn; upper median cells quadrate to irregularly hexagonal or rounded rhomboidal, mostly unistratose, rarely bistratose in places, smooth, thick-walled, sometimes a few rows of cells hyaline at margins; basal leaf cells subquadrate to short-rectangular, thin- to thick-walled. Autoicous. Perichaetial leaves larger than stem leaves. Setae erect, shorter or somewhat longer than capsule urn; capsules erect, immersed in perichaetial leaves, ovoid or broadly ellipsoidal; exothecial cells irregularly rectangular, thin- to thick-walled; stomata present at base of urn; annuli differentiated, consisting of 2–3 rows of thick-walled cells; opercula conic, short to somewhat long-rostrate; peristome teeth lanceolate, irregularly divided into 3–4 filaments in the upper part, sometimes highly perforate, densely papillose. Calyptrae large, campanulate, almost covering the entire capsule, deeply and longitudinally plicate, not hairy, lobed at base. Spores small, spherical, yellowish, nearly smooth or granulose.

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The genus consists of three species in the world. One species is found in China.

1. Jaffueliobryum wrightii (Sull.) Thér.

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