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Neckeraceae Schimp. Search in NYBG Virtual Herbarium Decrease font Increase font Restore font
 

Publicado en: Corollarium Bryologiae Europaeae 99. 1856. (Coroll. Bryol. Eur.) Name publication detail
 

Datos del Proyecto Nombre (Last Modified On 12/20/2012)
Aceptación : Accepted
Datos del Proyecto     (Last Modified On 12/16/2011)
General Reference:
Contributor: Wu, Peng-Cheng

Notas     (Last Modified On 12/16/2011)
general taxon notes:
The Neckeraceae are primarily a tropical and subtropical moss family. Sixteen genera are currently accepted in the world (Crosby et al. 2000), and six genera are known in China.

 

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Neckeraceae
平藓科   ping xian ke
by Wu Peng-cheng
 
 
Plants small, medium-sized to rather robust, yellow to brownish green or grayish green, usually glossy, mostly complanate, in loose or compact mats. Primary stems creeping; secondary stems ascending, erect or pendulous, 1–3-pinnately branched or irregularly branched; stem in cross section rounded or oval, usually without a central strand, cortical layers composed of 3–4 layers of small, thick-walled cells and large, thin-walled inner cells. Stem and branch leaves similar or dimorphic (in the Neckeraceae, all description of stem leaves refer to secondary stem leaves), usually complanate, loosely appressed, rounded-ovate, oblong-ovate, ovate-lanceolate or lingulate, oblong-lingulate, mostly asymmetrical, plane or strongly undulate, rarely irregularly longitudinally plicate; leaf apices broadly acuminate, acute, apiculate, or rounded-obtuse to truncate; leaf bases plane, or incurved on one side or with a small lobe; margins usually serrulate to coarsely toothed above, rarely entire; costae single, slender to rather thick, sometimes double or forked, rarely absent; leaf cells mostly smooth, rarely unipapillose; upper cells usually shorter, often rounded-quadrate, rounded-polygonal, or rhombic, thick-walled; median and lower cells becoming elongate, from rhomboidal to linear, thinner-walled; basal juxtacostal cells often porose; alar cells not clearly differentiated; occasionally all cells uniform. Dioicous or autoicous. Setae very short to elongate; capsules immersed to submerged or long-exserted, subglobose, ovoid to cylindrical; opercula conic, shortly apiculate to long-rostrate; annuli not developed to well-developed; peristome double, sometimes reduced to rudimentary; exostome teeth lanceolate to linear-lanceolate, papillose or striolate at the base, rarely smooth, with low lamellae inside; endostome segments linear or linear-lanceolate, as long as the teeth or often shorter, reduced, smooth to papillose, sometimes keeled, perforate; basal membrane usually low or absent, sometimes high; cilia often absent, sometimes well-developed. Calyptrae cucullate or mitrate, smooth or somewhat hairy. Spores spherical, smooth or papillose.
 

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1. Stems mostly tripinnately branched, dendroid, frondose, rarely unipinnately branched... 4. Homaliodendron
1. Stems often not distinctly pinnately branched, usually irregularly pinnately branched, not dendroid ............ 2
2. Secondary stems to 10 cm long; leaves mostly truncate or rounded at the apex.................... 6. Neckeropsis
2. Secondary stems usually not more than 5 cm long; leaves rounded-obtuse or obtuse at the apex............... 3
3. Leaves not strongly undulate, glossy, mostly densely appressed on stem.......................................................... 4
3. Leaves strongly undulate or not undulate, slightly glossy or not glossy, mostly loosely appressed or rarely densely appressed on stem....................................................................................................................................... 5
4. Leaves oblong-ovate or rounded-ovate, with a lobe at the distal side of base; costae absent....................... 3. Homaliadelphus
4. Leaves oblong, without a lobe at the distal side of base; costae single.......................................... 2. Homalia
5. Leaves broadly ovate or ovate-lingulate, strongly undulate or not undulate; costa mostly single, weak or indistinct, rarely bicostate; leaf cells rhomboidal to linear, thin-walled............................................. 5. Neckera
5. Leaves broadly lingulate, irregularly undulate; costae single, thick; leaf cells irregularly rhomboidal, thick-walled...................1. Himantocladium
 
 
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