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!Amblystegium Schimp. 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: Bryologia Europaea 6: 45 (fasc. 55–56. Mon. 1.). 1853. (Bryol. Eur.) Name publication detail
 

Project Name Data (Last Modified On 10/16/2009)
Acceptance : Accepted
Notes     (Last Modified On 10/16/2009)
Notes:

      Amblystegium contains ca. 20-30 (60) species, mostly of temperate regions, and nearly always in seasonally or permanent wet sites. Four species are recorded for the tropical Andes. The genus Orthotheciella (Müll. Hal.) Ochyra is included here.


 

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Plants small to medium sized, green to yellowish brown or green. Stems spreading, irregularly pinnately branched; in cross-section hyalodermis absent, central strand present; paraphyllia absent, pseudoparaphyllia foliose. Leaves erect to erect-spreading, ovate-lanceolate or –triangular, smooth, not plicate, base rarely indistinctly decurrent, apex short or long acuminate; margins plane, occasionally reflexed at base, entire to weakly or finely serrulate; costa single, ca. 1/3 to commonly 1/2 to short excurrent; laminal cells smooth, median and upper cells rhomboidal or oblong-rhomboid, thin- to thick-walled, walls entire, rarely porose; alar region undifferentiated to weakly differentiated, cells slightly enlarged, oblong-rectangular. Autoicous. Setae erect, elongate, usually red. Capsules horizontal, rarely erect, urn curved or rarely straight, cylindrical; peristome well developed. Calyptrae cucullate, naked and smooth. Spores mostly lightly papillose.
 
Plantas pequeñas a medianas, verdes a pardo-amarillentas a -verdosas o verdes. Tallos extendidos, irregularmente pinnados; hialodermis ausente en sección transversal, cordón central presente; paráfilos ausentes, pseudoparáfilos foliosos. Hojas erectas a erecto-extendidas, ovado-lanceoladas o –triangulares, lisas, no plicadas, base raramente no claramente decurrente, ápice corto o largo-acuminado; márgenes planos, ocasionalmente reflexos en la base, enteros a levemente o finamente serrulados; costa simple, aprox. 1/3 a comúnmente 1/2 del largo de la hoja a corto excurrente; células de la lámina lisas, células mediales y superiores romboidales u oblongo-romboidales, con paredes delgadas a gruesas, paredes enteras, raramente porosas; región alar indiferenciada a levemente diferenciada, células ligeramente agrandadas, oblongo-rectangulares. Autoicas. Seta erecta, alargada, usualmente roja. Cápsulas horizontales, raramente erectas, urna curvada o raramente rectas, cilíndricas; peristoma bien desarrollado. Caliptra cuculada, desnuda y lisa. Esporas mayormente finamente papilosas.
 

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1. Plants minute, stem leaves 03-0.6 mm long; costa ca. 1/3-1/2 leaf length, to 21 µm wide at leaf base; seta 5-8 mm long; endostome cilia absent or vestigial … A. subtile
1. Plants mostly small to mediaum sized, stem leaves 0.5-2.1 mm long; costa ca. 2/3 or more the leaf length, 21-95 µm wide at leaf base; seta 14 mm or more long; endostome cilia equal to subequal to exostome … 2.
2. Stem leaf costa 60-94 µm wide at leaf base … A. tenax
2. Stem leaf costa to 58 (rarely to 77) µm wide at leaf base … 3
3. Stem leaves 0.5-1.0 mm long; costa ca. 2/3 leaf length, rarely extending into acumen; leaf margins at least partially bluntly serrulate; basal alar cells rectangular or short-rectangular … A. serpens
3. Stem leaves 0.6-2.1 mm long; costa extending into acumen; leaf margins bluntly serrulate or subentire; basal alar cells rectangular or long-rectangular … A. varium
 
1. Plantas diminutas, hojas del tallo de 03-0.6 mm de largo; costa aprox. 1/3-1/2 del largo foliar, hasta 21 µm de ancho en la base de la hoja base; seta 5-8 mm de largo; cilios del endostoma ausentes o vestigiales … A. subtile
1. Plantas mayormente pequeñas a medianas, hojas del tallo de 0.5-2.1 mm de largo; costa de aprox. 2/3 o más del largo foliar, 21-95 µm de ancho en la base foliar; seta 14 mm o más larga; cilios del endostoma iguales a subiguales al exostoma … 2.
2. Costa de las hojas del tallo de 60-94 µm de ancho en la base foliar … A. tenax
2. Costa de las hojas del tallo de hasta 58 (raramente hasta 77) µm de ancho en la base foliar … 3
3. Hojas del tallo de 0.5-1.0 mm de largo; costa aprox. 2/3 del largo foliar, raramente extendiéndose dentro del acumen; márgenes foliares al menos parcialmente obtusamente serrulados; células alares basales rectangulares o corto-rectangulares … A. serpens
3. Hojas del tallo de 0.6-2.1 mm de largo; costa extendiéndose dentro del acumen; márgenes foliares obtusamente serrulados o subenteros; célula alares basales rectangulares o largo-rectangulares … A. varium
 
 
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