Marattia Sw.
Descripción
Rhizomes compact, stout, fleshy, horizontal to erect, with scales amorphous, thin, light brown, and with large, fleshy stipules; roots large, fleshy; fronds large, coarse, fleshy; blades deltate, 2–4 pinnate, swollen at branching points; veins free; laminae glabrous to slightly hairy; ultimate axes often winged; sori exindusiate; sporangia in elliptic, exindusiate, compound structures (synangia) near the ends of the veins, each sporangium opening by a pore into a 2-valved, clam-shaped structure; spores bilateral; x=40(39).
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Forma de vida
TerrestreA
Distribución
México (país) Nativo y no endémicoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Marattia is a pantropical genus of about 60 species, mostly of the South Pacific. It grows in wet forests of higher elevations. The large stipules are sometimes used for food, hence the local name “maíz del monte.” The genus is distinct by the large, fleshy fronds, huge stipules, and clam-like synangia. Among the Mexican ferns, Marattia is most closely related to Danaea.A