Alsophila R. Br.
Descripción
Stems decumbent to erect, to 15 m, with or without spines; fronds to 4.2 m, short-sessile to long-stipitate; stipes brown to black, smooth or spiny; stipe base scales concolorous or bicolorous, marginate, with an apical seta or with apical and lateral setae, also with squamules; blades pinnate-pinnatifid to quadripinnate; rachises with hairs, scales and squamules; veins free, mostly simple; indusia globose (sphaeropteroid) or absent; sporangia 16-spored, 64-spored in A. salvinii; x=69.A
Forma de vida
TerrestreA
Forma de crecimiento
Árbol/arborescenteA
Distribución
México (Country) native and not endemicB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Alsophila is a genus of ca. 235 species in the New and Old World tropics, three in Mexico. Recent treatments (e.g., Riba in Davidse et al., 1995) have submergedNephelea under Alsophila. The genus is distinct from other tree ferns by its frond scales bearing black acicular setae.
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