Sphenomeris Maxon, nom. cons.,
Descripción
Rhizomes slender, long-creeping, protostelic or solenostelic, densely covered with dark, linear, hairlike scales 2 to few cells wide at bases, or septate hairs; fronds determinate, ± distichous; stipes adaxially sulcate; blades 3–4 times alternately pinnate, anadromous, ultimate segments linear or spatulate, cuneate at bases, truncate at tips; rachises smooth (not spiny); veins few, forking, free; sori borne at or near distal margins of segments, single or 2–4 joined; indusia flattish, pocket-like, attached at bases and sides, single at the clavate apices or borne along a common transverse receptacle; sporangia often few per sorus, sometimes mixed with paraphyses; spores tetrahedral or bilateral; x=38, 39, 48, and possibly others.A
Forma de vida
o epipétrica. TerrestreA
Distribución
México (país) Nativo y no endémicoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
According to Kramer (1971), a genus of 11 species; three occur in the Neotropics, two in Africa, and the rest in Asia and Polynesia. The affinities of Sphenomeris are apparently with Lindsaea and especially Odontosoria, and Sphenomeris is sometimes combined with the latter (e.g., by Kramer in Kubitzki, 1991, and Wolf, 1995).A