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Thamnobryum Nieuwl. Search in The Plant ListSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: American Midland Naturalist 5(2): 50. 1917. (Amer. Midl. Naturalist) Name publication detail
 

Project Name Data (Last Modified On 12/16/2011)
Acceptance : Accepted
Notes     (Last Modified On 12/15/2011)
general taxon notes:
The genus consists of about 40 species (Crosby et al. 2000) in the world. Three species are known in China. Records of Thamnobryum alleghaniense (Müll. Hal.) Nieuwl., T. alopecurum (Hedw.) Nieuwl. ex Gangulee, T. incurvum (Nog.) Nog. & Z. Iwats., and T. plicatulum (Sande Lac.) Z. Iwats. listed by Redfearn et al. (1996) cannot be verified at this time. Many of the reports on T. alleghaniense, T. alopecurum, and T. plicatulum are based on misidentifications. Thamnobryum incurvum has been reported from Taiwan, but no specimens have been seen.

 

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4. Thamnobryum Nieuwl.   木藓属   mu xian shu
Amer. Midl. Naturalist 5: 50. 1917. Thamnium Schimp., Bryol. Eur. 5: 211. 1852, hom. illeg.
 
Plants rigid, medium-sized to rather large or robust, yellowish green, scarcely to somewhat glossy, often in loose tufts. Primary stems creeping; secondary stems suberect to dendroid, 1–2-pinnately branched, often with complanate branches; central strand scarcely differentiated; pseudoparaphyllia few, foliose. Stipe leaves remotely spaced, broadly ovate-lanceolate or triangular-lanceolate, acute or shortly acuminate at the apex. Stem leaves ovate to ovate-oblong or ovate-lingulate, usually concave; branch leaves similar, but smaller; margins serrate above; costae single, thick, vanishing under leaf apex, smooth or often with spines at the back; apical leaf cells rounded-quadrate; median cells hexagonal, rhombic to rhomboidal, usually thick-walled, not porose, rarely thin-walled; basal juxtacostal cells narrowly rectangular; alar cells scarcely differentiated. Dioicous or autoicous. Perichaetia on secondary stems. Inner perichaetial leaves shortly ovate-lanceolate or oblong-lanceolate. Setae elongate, smooth; capsules oblong-ovoid to shortly cylindrical, with a short apophysis; opercula obliquely long-rostrate; annuli well differentiated, inflated; peristome double; exostome teeth lanceolate, cross-striolate at the base, finely papillose above; endostome segments linear-lanceolate, as long as the teeth, keeled, perforate; basal membrane high; cilia well developed. Calyptrae cucullate, smooth. Spores spherical, finely papillose.
 
 

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1. Stem and branch leaves strongly concave, distinctly carinate near the apex; costae ending just a few cells (ca. 5 cells) below the apex, apices of costae at the back often grossly dentate, sometimes lamellate; perichaetial leaves small, shortly acuminate; capsules elongate-ovoid to shortly cylindrical..................... 1. T. subseriatum
1. Stem and branch leaves moderately concave or slightly concave, flattened near the apex; costae ending well below the apex, apices of costae at the back smooth or rarely dentate; perichaetial leaves large, long acuminate; capsules ovoid to oblong-ovoid........................................................................................................... 2
2. Stem leaves broadly ovate or ovate-lanceolate; apices of costae at the back occasionally dentate................
.................................................................................................................................................... 2. T. subserratum
2. Stem leaves oblong-ovate; apices of costae at the back smooth................................................ 3. T. tumidum
 
 
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