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Schwetschkea Müll. Hal. 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: Linnaea 39: 429. 1875. (Linnaea) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 3/27/2009)
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Notes     (Last Modified On 3/27/2009)
general taxon notes:
Wijk et al. (1967) listed 25 species in Schwetschkea in the world. Recently, Crosby et al. (2000) recognized 18 species with only one better understood and 17 less-known species. Most of these species are often briefly mentioned in a checklist or treated by a local flora. P.-C. Chen et al. (1978) reported 8 species of Schwetschkea and Koponen (1978) recognized 10 species in China. In this treatment, five species are treated.

 

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9. Schwetschkea C. Müll. 附干藓属 fu-gan xian shu
Linnaea 39: 429. 1875.
 
Plants slender to very slender, green, slightly glossy, in interwoven patches. Stems creeping, ascending at apex; usually pinnately branched; branches short, erect or erecto-patent, curved when dry; rhizoids in bundle; central strand not differentiated. Leaves dense, erect, sometimes secund when dry, erecto-patent when moist, ovate- lanceolate, acuminate above; leaf margins plane, serrulate; costa single, weak, ending in the middle of leaf; leaf cells oblong-elliptic or oblong-hexagonal; basal cells broader; alar cells quadrate, in several rows. Autoicous. Inner perichaetial leaves ovate-lanceolate, suddenly narrowed to a piliferous apex. Setae delicate, twisted when dry, reddish brown, rough or smooth above; capsules erect, oblong ovoid, constricted below the mouth when dry; opercula conic, with a long, oblique beak; annuli differentiated; peristome double; exostome teeth lanceolate, yellowish brown, somewhat lamellate below the middle, smooth, papillose above; endostome segments narrowly lanceolate, as long as exostome teeth, keeled, papillose; basal membrane low or moderately high; cilia absent. Spores medium-sized.
 
 
 

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1. Leaves and branches erect................................................................................................2
1. Leaves and branches secund.............................................................................................3
2. Peristome teeth absent..................................................................3. S. gymnostoma
2. Peristome teeth present................................................................ 5. S. sinica
3. Plants rather thick; branches 4–5 mm long; setae yellowish brown...................4. S. laxa
3. Plants slender; branches 3–4 mm long; setae reddish brown.........................................4
4. Setae short, up to 1.1 mm long........................................................1. S. brevipes
4. Setae rather long, 2–3 mm long.......................................................2. S. courtoisii
 
 
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