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Anoectangium Schwägr. 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, Supplementum Primum 1: 33. 1811. (Sp. Musc. Frond., Suppl. 1) Name publication detail
 

Project Name Data (Last Modified On 3/12/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/12/2009)
General Reference:

Notes     (Last Modified On 3/12/2009)
general taxon notes:
The genus Anoectangium consists of 56 species worldwide, with distribution mainly in warm and moist habitats of the tropics as well as in the arctic and mountains of the world. Five species are recognized in China.
 
Dixon (1924) placed this genus in the Orthotrichaceae. However, the growing habitats, the absence of creeping stems, the leaf shapes, and the capsule structure of Anoectangium all point to the Pottiaceae.

 

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2. Anoectangium Schwaegr.   丛本藓  cong-ben xian shu
Sp. Musc. Frond., Suppl. 1, 1: 33. 1811, nom. cons.
 
Plants slender, small to medium-sized, bright green to yellowish green, in dense tufts. Stems erect, simple, rarely monopodially branched, usually moderately tomentose at the base; in cross section rounded triangular; central strand weakly differentiated or absent; outer cortical cells small and thick-walled. Leaves densely arranged, erect, obliquely appressed or curved-contorted when dry, often lanceolate, oblong-lanceolate to ovate-lanceolate or ligulate, acute or gradually acuminate, usually twisted at the apex; margins flat or carinate, entire, sometimes crenulate to weakly rounded-denticulate at shoulder portion of the base; costa strong, ending at or near the apex, or shortly excurrent, strongly keeled, adaxial surface cells large, oblong, thick-walled, smooth; abaxial surface cells small, linear-rectangular, papillose, with 1 stereid band; upper leaf cells rounded-quadrate or rounded-hexagonal, firm-walled to thick-walled, with densely low, rounded, multi-papillae; basal cells somewhat differentiated, subquadrate to irregularly rectangular, firm- or thick-walled, yellowish green to hyaline, smooth. Dioicous; male and female inflorescences terminal on short lateral branches. Inner perichaetial leaves slightly longer than the stem leaves, broad-oblong, attenuate, sheathing at the base. Setae elongate, smooth, yellowish brown or reddish brown, more or less twisted; capsules erect, oblong-obovate to short-cylindrical; exothecial cells irregularly oblong; stomata phaneropore on neck, 4–8 per capsule; annuli absent or in one or two rows of weakly vesiculose cells; opercula obliquely long-rostrate; peristome teeth absent. Calyptrae cucullate, smooth. Spores spherical, yellowish brown, pluripapillose.
 
 

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1. Leaves 0.4–1.0 mm long, oblong-lanceolate to ovate-lanceolate; costa ending below the apex .................... 2
1. Leaves 1.0–2.0 mm long, ovate-lanceolate or linear-lanceolate; costa percurrent or shortly excurrent ...... 3
2. Leaves acute at the apex, margins crenulate at the base; median laminal cells with rounded pluripapillae.
................................................................................................................1. A. aestivum
2. Leaves obtuse at the apex, margins nearly entire at the base; median laminal cells with rounded unipapillae................................................................................................................................................3. A. crassinervum
3. Leaves linear-lanceolate, curved-contorted when dry, margins constricted above base; costa excurrent, with densely rough papillae on dorsal surface.............................................................................. 4. A. stracheyanum
3. Leaves ovate-lanceolate, involuted when dry, margins constricted at the base; costa percurrent or near the apex, smooth or with loosely slender papillae on dorsal surface....................................................................... 4
4. Stems less than 1.0 cm long; leaves incurvate, strongly carinate; basal laminal cells oblong-rectangular or ovate-rectangular, thin-walled, not pellucid, usually papillose, without differentiated area at laminal base.................................................................................5. A. thomsonii
4. Stems more than 1.0 cm long; leaves erect patent, weakly carinate, basal laminal cells narrowly rectangular, thick-walled, pellucid, smooth, more or less with rounded differentiated area at laminal base.............................................................................2. A. clarum
 
 
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