Sphaeropteris Bernh.
Descripción
Stems erect, massive; fronds 1–5 m; stipes smooth to muricate, scaly, the scales spreading or appressed abaxially, the marginal cells similar to those of the central part in shape, size, and orientation, with dark marginal hair teeth; blades pinnate to bipinnate-pinnatifid; surfaces with scales and hairs abaxially, costae and costules with small hairs curving adaxially; veins free; indusia hemitelioid to globose or absent; spores 64 per sporangium; x=69.A
Forma de vida
TerrestreA
Distribución
México (país) Nativo y no endémicoA
Elevación
data unavailableA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Sphaeropteris has ca. 110 species in tropical regions of the New and Old Worlds, but only one in Mexico. The genus in its restricted sense in the New World (S. horrida and ca. five other species) is monophyletic and sister to Cyathea (Hasebe et al., 1995).A