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Leskea Hedw. 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: Species Muscorum Frondosorum 211–235, pl. 49–58; pl. 59, f. 1–5. 1801. (Sp. Musc. Frond.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

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Notes     (Last Modified On 3/27/2009)
general taxon notes:
There are about 15 species of Leskeain the world. Species are mainly distributed in the temperate zones on moist soil or rock surfaces, especially common on bases of tree trunks. Müller (1897) published the first Chinese record of Leskea (Leskea magniretis = Lindbergia sinensis). Bartram (1935) recorded Leskea scabrinervis Broth. & Par. from Fujian province. M.-J. Lai (1976) recorded Leskea subacuminata Nog. from Taiwan. Chen et al. (1978) listed 4 species of Leskea from China, of which L. consanguinea (Mont.) Mitt. and L. subfiliramea Broth & Par. were new to the country. Leskea polycarpa Ehrh. ex Hedw. and L. arenicola Best were recently reported from China by R.-L. Hu & Y.-F. Wang (1981) and Redfearn and P.-C. Wu (1986), respectively. In this study three species are recognized, with Leskea gracilescens Hedw. newly reported from China. The taxonomic status of Leskea subacuminata Nog., L. consanguinea (Mont.) Mitt., and L. subfiliramea Broth. & Par. are uncertain because no specimens were available for study.
 

 

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2. Leskea Hedw. 薄罗藓属 bo-luo xian shu
Sp. Musc. Frond. 211. 1801.
 
Plants rather slender, dark green, dull. Stems creeping, sparsely radiculose, pinnately or subpinnately branched; branches short, ascending or erect; paraphyllia few, linear to shortly lanceolate, rarely lacking. Leaves appressed on stems when dry, erect-spreading when moist, sometimes slightly secund; cordate or ovate, slightly decurrent at base, gradually narrowed to a mucronate or acuminate apex, or sometimes blunt to acute at apex, usually slightly plicate; margins often recurved, entire or serrulate near apex; costa single, thick, strong, ending below apex; leaf cells thin-walled; upper cells rounded to hexagonal, unipapillose, rarely bipapillose or multipapillose; median cells rhomboidal; basal cells subquadrate; branch leaves smaller. Monoicous. Inner perichaetial leaves pale, sheathing at base, with either long or short apices, cells smooth. Setae slender, elongate; capsules erect, oblong-cylindrical, sometimes curved or pendent, exothecial cells thin-walled; annuli differentiated, deciduous; peristome double; exostome teeth pale yellow, linear, with a long acuminate apex, margins not differentiated, striate below, papillose above; endostome segments pale yellow, finely papillose, linear, folded, equal to or longer than teeth; basal membrane low; cilia rudimentary; opercula conic. Spores small, verrucose.
 
 

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1. Leaves broadly ovate, 1.0–1.5:1 (length/width), rounded at apex.............................1. L. gracilescens
1. Leaves ovate or ovate-lanceolate; 2:1 (length/width), rather acute or acuminate at apex...........................2
2. Plants rather large; leaves ovate, distinctly secund, acute at apex; paraphyllia numerous; leaf cells unipapillose; costa smooth on the back....................................................2. L. polycarpa
2. Plants small; leaves ovate-lanceolate, acuminate at apex, not secund or slightly secund; paraphyllia few; leaf cells smooth; costa roughened on the back...........................................................3. L. scabrinervis

 

 
 
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