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Barbella M. Fleisch. ex Broth. 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: Die Natürlichen Pflanzenfamilien 226[I,3]: 823–825, f. 613. 1906. (Nat. Pflanzenfam.) Name publication detail
 

Project Name Data (Last Modified On 12/16/2011)
Acceptance : Accepted
Notes     (Last Modified On 12/14/2011)
general taxon notes:
There are some 17 species of Barbella in the world, with ten of them better understood (Crosby et al. 2000). The genus is divided into five sections by Brotherus (1925). Buck (1994) treated two sections, sect. Dicladiella M. Fleisch. and sect. Neodicladiella Nog., as two independent genera separated from Barbella, and this treatment is followed here. D.-C. Zhang et al. (2003) recently published two newly recorded species of Barbella from Yunnan: B. convolvens (Mitt.) Broth. and B. stevensii (Renauld & Cardot) M. Fleisch. Five species are currently known in China. Barbella chrysonema (Müll. Hal.) Nog. reported from Yunnan and Zhejiang, B. macroblasta Broth. from Xizang and Zhejiang, and B. turgida Nog. from Taiwan cannot be confirmed at this time.

 

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4. Barbella M. Fleisch. ex Broth.   悬藓属   xuan xian shu
Nat. Pflanzenfam. I(3): 823. 1906.
 
Plants often small, sometimes medium-sized, slender, soft, yellowish green, glossy to somewhat glossy. Primary stems creeping, filiform, sparsely foliate, subpinnately branched; secondary stems often complanately foliate, prostrate or pendulous; branches elongate, slender, pendulous, rarely on substrates. Stem leaves appressed when dry, erect-spreading when moist, oblong, ovate, or oblong-ovate at the base, gradually narrowed to a short to long, slender to piliferous apex; margins serrulate, sometimes undulate above; costae single, slender, reaching to mid-leaf, rarely absent; leaf cells elongate-rhomboidal to linear, uni- to pluripapillose, usually thin-walled; apical cell slightly thick-walled; basal juxtacostal cells rectangular or quadrate, thick-walled; alar cells more or less differentiated, quadrate or subquadrate; branch leaves similar to stem leaves, usually more complanate, not appressed; axillary hairs up to 7–8 cells long, hyaline. Dioicous or autoicous. Perichaetia on branches or stems; inner perichaetial leaves lanceolate, ecostate or with a very short costa. Setae short, often curved, smooth or scabrose; capsules erect, oblong-ovoid or cylindrical; opercula conic-rostrate; annuli usually not differentiated; peristome double; exostome teeth narrowly lanceolate, papillose throughout, lamellae high; endostome segments linear-lanceolate, as long as or slightly shorter than the teeth, often keeled, perforate; basal membrane high; cilia rudimentary or absent. Calyptrae mitrate, lobed or cucullate, smooth or hairy. Spores spherical, finely papillose.
 
 

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1. Stems densely pinnately branched; branches short, not elongate..................................... 1. B. compressiramea
1. Stems remotely branched or loosely pinnately branched; branches very elongate............................................ 2
2. Stem and branch leaves narrowly ovate at the base, gradually narrowed to a slender or hairy apex................
..................................................................................................................................................... 3. B. linearifolia
2. Stem and branch leaves broadly ovate or oblong-ovate at the base, abruptly narrowed to a hairy apex or rather gradually narrowed to a slender apex....................................................................................................... 3
3. Stem leaves broadly ovate at the base, gradually narrowed to a slender apex; median leaf cells less than 65 µm long; plants autoicous................................................................................................................... 5. B. stevensii
3. Stem leaves oblong or oblong-ovate at the base, abruptly narrowed to a long, hairy apex; median leaf cells usually (55–)65–75 µm long; plants dioicous....................................................................................................... 4
4. Branch leaves often undulate at mid-margins; leaf base at the insertion without a row of hyaline, large cells.......................................................................................................................................................................... 2. B. convolvens
4. Branch leaves usually plane at mid-margins; leaf base at insertion with a row of hyaline, large cells............... 4. B. spiculata
 
 
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