Ananthacorus Underw. & Maxon
Descripción
Epiphytic or epipetric; rhizomes short-creeping, dorsiventral, solenostelic, at apices with clathrate scales; fronds distichous, pendent or arching, clumped to somewhat remote, stipes absent or very short and flattened; blades linear-elliptic, entire, costate, glabrous; veins obscure, anastomosing and forming areoles in 2(–4) series on each side of midrib (visible in transmitted light), areoles without included veinlets; sori of two submarginal ± continuous lines, one on each side of the midrib, sunken in grooves; indusia absent; paraphyses abundant, filiform, not enlarged at tips; spores bilateral, hyaline, smooth; gametophytes lacking gemmae; x=120.A
Forma de vida
Terrestre, EpífitaA
Distribución
México (Country) native and not endemicB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Ananthacorus is monotypic, the single species widespread from Mexico to Bolivia. It has often been subsumed within Vittaria, a genus shown by Crane (1997) to be polyphyletic. Ananthacorus appears to be most closely related to Scoliosorus and Vittaria s.str., according to phylogenetic reconstruction by Crane. It differs from Vittaria in having vein areoles in usually two or three (sometimes four or five) series between the midrib and blade margins and in the absence of gemmae on the gametophytes. From Scoliosorus, Ananthacorus differs in having only two submarginal linear sori per blade and in having filiform paraphyses that lack a globose apical cell.A