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Pylaisia 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: 87 [fasc. 46–47. Monogr. 1). 1851. (Bryol. Eur.) Name publication detail
 

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general taxon notes:
The genus Pylaisia, usually treated as Pylaisiella Kindb. ex Grout, consists of some 17 species with 10 well understood species in the world. The species are often found in temperate regions, usually growing on trunks, rarely on rocks. Eight species were reported from China (Redfearn et al. 1996). Among these, Pylaisiella subimbricata (Broth. & Par.) Redf., Tan & He (= Pylaisia subimbricata Broth. & Par.) cannot be confirmed. Seven species are treated here for China.

 


 

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23. Pylaisia Bruch & Schimp. in B.S.G.   金灰藓属   jin hui xian shu
Bryol. Eur. 5: 87 (fasc. 46–47 Mon. 1). 1851.
PylaisiellaKindb. ex Grout, Bull. Torrey Bot. Club 23: 228. 1896.
 
Plants slender to medium sized, yellowish, pale green or dark green, mostly glossy. Stems creeping, rhizoids numerous, irregularly or subpinnately branched; branches short, ascending, usually curved. Stem leaves and branch leaves similar, appressed when dry, erect spreading when moist, moderately concave, ovate-lanceolate or oblong-lanceolate, slenderly to shortly acuminate at apex; margins entire or serrulate near the apex; costae double, short, indistinct or absent; leaf cells rhomboidal to linear; alar cells numerous, quadrate. Autoicous. Inner perichaetial leaves oblong-lanceolate, serrulate above. Setae slender, smooth; capsules erect, symmetric, ovoid or cylindrical; opercula conic, shortly rostrate; annuli moderately developed or lacking; peristome double; exostome teeth narrowly lanceolate, yellowish or yellowish brown, cross-striolate at the base on dorsal surface, trabeculate on ventral surface; endostome segments slenderly lanceolate, as long as or shorter than the teeth, keeled, perforate; basal membrane low; cilia rudimentary or absent. Calyptrae cucullate, smooth, naked. Spores spherical, yellowish brown, densely papillose.
 
 

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1. Endostome segments not adherent to teeth................................................................. 5. P. polyantha
1. Endostome segments wholly or partially adherent to the teeth...............................................2
2. Alar cells rather few (less than 10 cells) ............................................................................3
2. Alar cells numerous (10–20 or more cells) ........................................................................4
3. Leaf margins plane.....................................................................................................4. P. falcata
3. Leaf margins revolute..................................................................................................3. P. extenta
4. Leaves ovate-lanceolate..........................................................................................................5
4. Leaves broadly ovate-lanceolate............................................................................................. 6
5. Leaves long acuminate at apex; spores 26–29 µm in diameter; setae 8–15 mm long...........1. P. brotheri
5. Leaves shortly acuminate at apex; spores 15–19 µm in diameter; setae 6–12 mm long........7. P. selwynii
6. Alar cells quadrate or irregularly quadrate, lax, 10–11 cells along the margins.....................6. P. robusta
6. Alar cells quadrate, regularly arranged, about 20 cells along the margins........................... 2. P. curviramea
 
 
 
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