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Acroporium Mitt. 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: Journal of the Linnean Society, Botany 10: 182–184. 1868. (J. Linn. Soc., Bot.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

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Acceptance : Accepted
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General Reference:

Notes     (Last Modified On 4/1/2009)
general taxon notes:
The genus Acroporium consists of some 75 species in the world, mostly distributed in tropical and subtropical regions. Seven species are recognized in China.

 

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1. Acroporium Mitt.   顶胞藓属   ding bao xian shu
J. Linn. Soc., Bot. 10: 182. 1868. Rhaphidostegium sect. Acroporium (Mitt.) Besch., Ann. Sci. Nat., Bot., ser. 6, 10: 307. 1880.
 
Plants slender or robust, soft, rarely stiff, somewhat glossy in interwoven patches. Stems elongated, densely foliate, often densely and pinnately branched, erect or ascending; frequently cuspidate at tips; rhizoids few or absent. Leaves in several ranks, erect or erect-spreading, sometimes clearly secund, oblong-ovate or lanceolate, concave, cordate at base; leaf cells narrowly rhomboidal, mostly thick-walled, pitted, lumen narrower, smooth, rarely somewhat papillose in some cells; alar region consisting of one row of inflated, hyaline or yellowish cells, rarely deeply brown. Dioicous, rarely autoicous. Inner perichaetial leaves erect, sheathing at base, acute or acuminate above. Setae slender and elongate, usually mammillose above, rarely smooth; capsules erect or inclined, ovoid or cylindrical, apophyses short; exothecial cells sometimes mammillose; opercula conic, slenderly rostrate; peristome double; exostome teeth lanceolate, bordered, outer surface cross-striate below, papillose above, inner surface clearly trabeculate; endostome segments as high as the teeth, keeled, yellowish; basal membrane high; cilia simple, short, sometimes reduced. Spores variable in size, yellowish green, spherical, finely papillose.
 
 
 

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1. Plants very small, densely branched; leaves mostly cylindrical to acicular when dry, less than 1.25 mm long excluding leaf acumen; leaf cells somewhat mammillose or weakly papillose............................................... 2
1. Plants small to large, distantly branched; leaves not cylindrical or acicular when dry, more than 1.25 mm long excluding leaf acumen; leaf cells smooth................................................................................................... 3
2. Plants without slender branches; leaves acicular when dry; leaf cells slightly mammillose or occasionally low unipapillose; setae less than 10 mm long............................................... 2. A. diminutum
2. Plants with numerous slender, erect branches; leaves more or less cylindrical; leaf cells clearly unipapillose; setae longer than 10 mm......................................................................... 3. A. lamprophyllum
3. Leaves often erect-spreading, broadly ovate to oblong-ovate, acute to shortly acuminate at apex, broadly cordate at base........................................................................................................................4
3. Leaves often falcate, lanceolate to narrowly lanceolate, long acuminate at apex, narrowly cordate at base.. 7
4. Plants small; leaves less than 2 mm long; setae less than 15 mm long................................ 5. A. secundum
4. Plants large; leaves more than 2 mm long; setae more than 15 mm long.................................................... 5
5. Plants in dense cushions; synoicous (with antheridia and archegonia mixed in the same gametoecium).........
....................................................................................................................1. A. condensatum
5. Plants in loose tufts or lax mats; dioicous or autoicous..................................................................6
6. Leaves 1.5–2.0 mm × 0.50–0.75 mm, often falcate at apices............ 6a. A. stramineum var. stramineum
6. Leaves 2.0–3.0 mm × 1.0–1.25 mm, rarely falcate.................................. 6b. A. stramineum var. turgidum
7. Plants small; leaves less than 2 mm long......................................................4. A. rufum
7. Plants large; leaves more than 2 mm long....................................................7. A. strepsiphyllum
 
 
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