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Meteorium (Brid.) Dozy & Molk. 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: Musci Frondosi Inediti Archipelagi Indici 157. 1848. (Musc. Frond. Ined. Archip. Ind.) 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 about 36 species of Meteorium in the world, with some 20 species better understood (Crosby et al. 2000). Six species are known in China. Meteorium crispifolium Herzog reported from Zhejiang (R.-L. Hong & R.-L. Hu 1984) and M. cucullatum S.-H. Lin & S.-H. Wu reported from Taiwan (S.-H. Wu & S.-H. Lin 1986) cannot be confirmed at this time, because no collections of these two species have been seen.

 

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10. Meteorium (Brid.) Dozy & Molk.   蔓藓属   man xian shu
Musci Frond. Ined. Archip. Ind. 157. 1848. Pilotrichum subgen. Meteorium Brid., Bryol. Univ. 2: 264. 1827.
 
Plants small to rather robust, soft or stout, dark green or brownish green when old, sometimes blackish, glossy or not glossy, in loose and compact mats. Primary stems creeping, sometimes stoloniferous; secondary stems pendulous or prostrate, flexuose, loosely or densely branched or irregularly pinnately branched; branches often densely foliate, turgid, obtuse at the apex; in stem cross section, epidermis consisting of several layers of yellowish brown, thick-walled cells, medullary cells large, hyaline; a central strand weakly differentiated, with several small cells. Leaves of secondary stems and branches similar, imbricate when dry, broadly ovate, oblong-ovate, or triangularly ovate, often concave, irregularly plicate, usually cucullate, abruptly narrowed to a short, sometimes hairy acumen at the apex, often undulate, auriculate at the base; margins often incurved, entire, crenulate or serrulate above; costae single, reaching 1/2–2/3 the leaf length, rarely forked; leaf cells oval, rhomboidal, linear-rhomboidal to linear, usually distinctly unipapillose, thick-walled, porose; basal juxtacostal cells rectangular, strongly thick-walled, porose, often smooth; alar cells not clearly defined, cells at the auricles oblong to linear; axillary hairs ca. 5 cells long, 1–2 basal cells short, brown, upper cells hyaline. Dioicous. Perichaetia on branches; inner perichaetial leaves ovate-lanceolate, with a hairy apex; paraphyses numerous. Setae ca. 2 mm long, roughened; capsules erect, ovoid to oblong-ovoid; opercula conic, obliquely rostrate; annuli not differentiated; peristome double; exostome teeth lanceolate, in various forms, not hyaline, densely and finely papillose, lamellae high; endostome segments linear, shorter or as long as the teeth, densely papillose, keeled, perforate; basal membrane low; cilia absent. Calyptrae cucullate, often hairy. Spores spherical, papillose.
 
 

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1. Leaf apices rounded, nearly as broad as the median part, often cucullate, abruptly constricted into a slender or hairy apex; leaves concave, not particularly plicate.......................................................................................... 2
1. Leaf apices narrowed, gradually tapering to a long acuminate, slender, or hairy apex; leaves weakly concave, often distinctly plicate............................................................................................................................................. 3
2. Stems and branches terete, distinctly julaceous; leaves densely imbricate, widely oblong-ovate, almost in equal width throughout.............................................................................................................. 2. M. buchananii
2. Stems and branches not strongly julaceous; leaves loosely appressed, oblong-ovate, usually distinctly wider at the base................................................................................................................. 6. M. subpolytrichum
3. Stems and branches slender; leaves densely imbricate when dry; median leaf cells elliptic to short-rhomboidal, 12–18 µm long.................................................................................................... 4. M. papillarioides
3. Stems and branches rather thick; leaves loosely imbricate when dry; median leaf cells elongate-rhomboidal to linear, 20–50 µm long.......................................................................................................................................... 4
4. Leaves slightly concave, sometimes twisted at the apex; each leaf cell with a high, sharp papilla.................
.................................................................................................................................................... 3. M. elatipapilla
4. Leaves usually not concave, not twisted at the apex; each leaf cell with a low, blunt papilla........................ 5
5. Leaves usually long-acuminate, sometimes ending in a hairy apex; marginal cells much shorter than the inner cells; median leaf cells 20–30 µm long..................................................................... 1. M. atrovariegatum
5. Leaves shortly acuminate, often ending in a slender apex; marginal cells slightly shorter than the inner cells; median leaf cells 35–50 µm long............................................................................................... 5. M. polytrichum
 
 
 
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