Monographs Details: Loxogramme
Authority: Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Description:Genus Description - Epiphytic and epipetric; rhizome long-creeping, slender, scaly; fronds small, distant to clumped, monomorphic (or dimorphic in Old World); stipe short to nearly lacking, not articulate; blade simple, entire; lamina glabrous, fleshy; veins immersed, obscure, netted with included veinlets; sori elongate, oblique to midvein, superficial or in slight grooves, exindusiate, paraphyses lacking (in ours) or present; spores tetrahedral-globose or bilateral, without perispore, green.
Discussion: Lectotype (first chosen by J. Smith?, Hist, fil. 156. 1875): Loxogramme lanceolata (Swartz) Presl [=Grammitis lanceolata Swartz].
There are about 30-40 species of Loxogramme, most of eastern and southeastern Asia and adjacent Pacific islands, with only one in Middle America. Copeland (1947) suggested a grammitid alliance but Price (pers. comm.) believes it to be a distinct group that is coordinate with polypods and grammitids. Ours is rare, growing with and confused with Antrophyum ensiforme. It is characterized by anastomosing veins, clathrate rhizome scales, entire, glabrescent leaves and green spores.