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Hylocomium Bruch & Schimp. 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: Bryologia Europaea 5: 169 (fasc. 49–51. Mon. 1.). 1852. (Bryol. Eur.) Name publication detail
 

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General Reference:

Notes     (Last Modified On 4/3/2009)
general taxon notes:
According to Rohrer (1985), the genus includes one species in the world, and is commonly found in temperate and cool regions.
 
 

 

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2.  HylocomiumBruch & Schimp. inB.S.G.   塔藓属   ta xian shu
Bryol. Eur. 5: 169 (fasc. 49–51 Mon. 1). 1852.
 
Plants medium-sized to large, stiff, yellowish green, olive-green, yellow to brownish red, dull or slightly glossy, in loose wefts. Stems prostrate, with ascending-arching innovations, usually 2–3-pinnately or -dendroidly branched, forming a sympodial growth pattern, 1–3 cm long; in stem cross section an inner collenchyma of large cells with somewhat thickened walls and an outer sterome of smaller, thick-walled cells; epidermis not differentiated; central strand absent; paraphyllia densely covering main stems and main branches, fewer on branchlets; pseudoparaphyllia not differentiated from paraphyllia. Stem leaves differentiated from branch leaves; stem leaves rounded ovate or broadly ovate at base, slightly concave, usually clasping, with long and twisted lanceolate apices, sometimes shortly acute; slightly constricted at base, sometimes slightly reflexed; margins usually toothed, sometimes subentire; costae double, unequal, separated at base, extending to ca. 1/2 the leaf length; sometimes very short or weak; laminal cells irregularly linear, length to width ratio approximately 7–12:1, thin-walled or slightly incrassate, slightly pitted, clearly papillose or prorate at back; basal cells somewhat shorter and broader, yellowish brown, incrassate, usually weakly pitted; alar cells not differentiated; branch leaves small, ovate-lanceolate or ovate, sometimes strongly concave, with short apices, lanceolate or obtuse; margins toothed or entire, costae double or indistinct. Dioicous. Inner perichaetial leaves narrowly ovate-lanceolate. Setae slender, reddish brown, sometimes slightly twisted; capsules ovoid, inclined to slightly pendent, usually with apophyses; stomata at base of capsules; annuli differentiated, with 1–2 rows of larger cells; peristome double; exostome teeth narrowly lanceolate, yellowish brown, with a light-colored border, papillose above, fusing at base; outer surface cross-striate; endostome segments lightly yellow, smooth; trabeculate, numerous perforations along median line; basal membrane high; cilia 2–4, nodulose above. Calyptrae conic, obliquely rostrate. Spores small, 10–18 µm in diameter, yellow, finely papillose.
 

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One species is known from China.
 
1. Hylocomium splendens (Hedw.) Schimp. in B.S.G.  
 
 
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