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Thamnobryaceae Margad. & During Search in NYBG Virtual Herbarium Decrease font Increase font Restore font
 

Published In: Beknopte Flora van Nederlandse Blad- en Levermossen 443. 1982. (Bekn. Fl. Ned. Blad. & Leverm.) Name publication detail
 

Project Name Data (Last Modified On 12/16/2011)
Acceptance : Accepted
Project Data     (Last Modified On 12/16/2011)
General Reference:
Contributor: Wu, Peng-Cheng

Notes     (Last Modified On 12/16/2011)
general taxon notes:
Some of the genera in this family were treated under the subfamily of the Neckeraceae (Brotherus 1925; P.-C. Chen et al. 1978). The Thamnobryaceae have recently been considered as an independent family by numerous authors (Buck & Vitt 1986; Ochyra 1986; Noguchi & Iwatsuki 1989; Olsson et al. 2009). Three genera, Pinnatella M. Fleisch., Porotrichum (Brid.) Hampe, and Thamnobryum Nieuwl., were treated in the Genera Bryophytorum Sinicorum (P.-C. Chen et al. 1978). The species of Porotrichum mentioned by P.-C. Chen et al. (1978) have either been excluded from China or transferred to other genera. Ochyra (1986) reported Handeliobryum sikkimense (Paris) Ochyra from China by synonymizing H. setschwanicum Broth.; however, no specimens of this genus have been seen in my study. The Thamnobryaceae here contain four genera: Curvicladium Enroth, Pinnatella, Shevockia Enroth & M.-C. Ji, and Thamnobryum.

 

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Thamnobryaceae
木藓科   mu xian ke
by Wu Peng-cheng
 
 
Plants usually robust, sometimes medium-sized, rarely small, yellowish green or dark green, brownish green when old, slightly or not glossy, in loose tufts. Primary stems creeping, leaves deciduous, with reddish brown rhizoids; secondary stems dendroid, suberect or ascending, 1–2-pinnately branched above, or multiply branched; central strand scarcely to well differentiated. Stipe leaves scale-like, on the base of secondary stems; secondary stem and mature branch leaves similar, ovate or oblong-ovate, rarely broadly lingulate, mostly strongly concave, rarely plane, sometimes irregularly undulate, obtusely acute or acuminate at the apex; margins entire below, grossly serrate or serrulate above; costae single, usually thick, vanishing in leaf apex, sometimes with spines at the back; leaf cells hexagonal, oblong, or rhomboidal, evenly thick-walled, smooth; basal cells narrowly rectangular or oblong-rhomboidal; alar cells not clearly differentiated. Dioicous. Setae elongate, slender, smooth; capsules oblong-ovoid to subcylindrical; peristome teeth double; exostome teeth lanceolate; endostome segments linear-lanceolate, as long as the teeth; basal membrane high; cilia well developed, rudimentary, or absent. Calyptrae cucullate, not hairy. Spores spherical, finely papillose.
 

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1. Plants somewhat glossy; secondary stems dendroid, loosely or densely branched; central strand scarcely differentiated; leaves ovate or oblong-ovate, strongly concave, grossly dentate at the apex; cilia usually well developed, 2–3.............................................................................................................................. 4. Thamnobryum
1. Plants rarely glossy; secondary stems pinnately branched; central strand well differentiated or absent; leaves ovate-lingulate, ovate, or ovate-lanceolate, slightly concave, serrulate, rarely grossly serrate; cilia rudimentary or absent............................................................................................................................................... 2
2. The apices of stems and branches arcuate; pseudoparaphyllia absent; cilia rudimentary..... 1. Curvicladium
2. The apices of stems and branches not arcuate; pseudoparaphyllia present; cilia absent................................ 3
3. Leaves often symmetric to slightly asymmetric, occasionally rather asymmetric, upper stem leaves usually not undulate; costae often strong, long, rarely weak and short; stipe leaves squarrose to spreading; capsules not varnished when old......................................................................................................................... 2. Pinnatella
3. Leaves distinctly asymmetric, upper stem leaves often undulate; costae weak and short; stipe leaves spreading; capsules strongly lustrous and varnished when old......................................................... 3. Shevockia
 
 
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