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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
 

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

Datos del Proyecto Nombre (Last Modified On 8/23/2009)
Aceptación : Accepted
Datos del Proyecto     (Last Modified On 11/15/2012)
General Reference:

Notas     (Last Modified On 11/15/2012)
Notas:

Acroporium contains some 80 species primarily of the Paleotropics; about 3-4 species in the Neotropics; in the tropical Andes three species. Acroporium is distinguished by the tufted habit formed by ascending stems and branches, the deeply concave, usually distally tubulose leaves, strongly obliquely arranged, inflated, thick-walled, oblong alar cells, and exostome furrowed or not. Most species assigned to Acroporium were originally placed in Sematophyllum.

 

Acroporium contiene unas 80 especies principalmente del Paleotrópico; ca. 3-4 especie en el Neotrópico; en los Andes tropicales tres especies. Acroporium se distingue por su hábito fasciculado formado por tallos y ramas ascendentes, las hojas profundamente cóncavas, por lo general distalmente tubulosas, marcadamente dispuestas oblicuamente, inflado, pared celular gruesa, oblongas alar células, y exostoma acanalado o no. La mayoría de las especies asignadas a Acroporium estaban localizadas originalmente en Sematophyllum.


 

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Plants usually forming tufts, glossy green, yellowish-green or golden. Stems initially short creeping then ascending to erect; central strand absent. Leaves erect to erect-spreading, narrowly to broadly ovate to oblong-lanceolate, concave, apex long acuminate, base usually somewhat auriculate; margins distally enrolled, entire to slightly serrulate; laminal cells smooth (rarely unipapillose) upper and median cells linear, porose or not; basal cells shorter, strongly porose; alar cells differentiated, obliquely angled (45°), oblong-rectangular, inflated, thick-walled, usually golden-yellow or -brown. Autoicous. Perichaetia lateral. Setae elongate, slender and wiry. Capsules inclined to erect, urn ovoid, mouth flared when deoperculate; exothecial cells collenchymatous; stomata at urn base, superficial; opercula long-rostrate, oblique; peristome double, exostome finely cross-striate, distally papillose, weakly to strongly furrowed; endostome basal membrane high, segments 16, keeled and perforate. Calyptrae cucullate, smooth and naked. Spores spherical, lightly to densely papillose.

 

Plantas generalmente formando manojos, verdes brillantes, verde-amarillentas o doradas. Tallos inicialmente corto reptantes luego ascendentes a erectos; sin cordón central. Hojas erectas a erecto-extendidas, angostamente a anchamente ovadas a oblongo-lanceoladas, cóncavas, ápices largo acuminados, base generalmente algo auriculada; márgenes distalmente enrollados, enteros a escasamente serrulados; células de la lámina lisas (rara vez unipapilosas) células superiores y medias lineales, poroso o no; células basal cortas, marcadamente porosas; células alares diferenciadas, acomodadas oblicuamente en ángulo (45°), oblongo-rectangulares, infladas, con paredes gruesas, generalmente amarillo-doradas o -marrones. Autoicas. Periquecios laterales. Setas alargadas, delgadas y alambrinas. Cápsulas inclinadas a erectas, urna ovoide, boca {flared} cuando está desoperculadas; células exoteciales colenquimatosas, estomas en la base de la urna, superficiales; opérculo largo-rostrado, oblicuo; peristoma doble, exostoma con estrías finamente cruzadas, distalmente papiloso, débilmente a marcadamente acanalado; membrana basal del endostoma alta, segmentos 16, carinados y perforados. Caliptra cuculada, lisa y desnuda. Esporas esféricas, ligera a densamente papilosas.

 

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1. Leaf apices piliferous … A. esmeraldicum
1. Leaf apices gradually acuminate … 2.
2. Plants small, to 3 cm tall; leaves narrowly oblong-lanceolate, 1.2-1.5 mm long, 0.2-0.3 mm wide; margins distally reflexed… A. estrellae
2. Plants large, 2-10 cm tall; leaves broadly ovate- to oblong-lanceolate, 2.5-2.8 mm long, 0.6-0.7 mm wide; margins distally incurved… A. pungens
 
1. Hojas con ápice pilífero … A. esmeraldicum
1. Hojas con ápice gradualmente acuminado … 2.
2. Plantas pequeñas, hasta 3 cm de alto; hojas angostamente oblongo-lanceoladas, 1.2-1.5 mm de largo, 0.2-0.3 mm de ancho; márgenes distalmente reflexos… A. estrellae
2. Plantas grandes, 2-10 cm de alto; hojas ampliamente ovado- a oblongo-lanceoladas, 2.5-2.8 mm de largo, 0.6-0.7 mm de ancho; márgenes distalmente incurvados… A. pungens
 
 
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