Oleandra neriiformis Cav.

Rhizome with main stems creeping or ascending, 3-8 mm thick, creeping parts sparsely rooting, branches often in opposite pairs, ascending parts rootless, at base prop­ped up by downwards directed branches, ultimately aerial, erect or pendent; branches single or in opposite pairs, mostly directly above a frond cluster, all parts in cross-section with a peripheral sclerified sheath and scattered sclerified strands, white waxy in the older parts, fronds on creeping parts few, scattered, on aerial parts in more or less dense, often whorled clusters and branches. Scales persistently covering the rhizome, peltate, 4-6.5 by 1-1.5 mm, appressed to squarrose, with dark centre and lighter margin and acumen, margin ciliate. Fronds monomorphic or weakly dimorphic, phyllopodia very short or up to 15 mm long, stipe very short or up to 3.5 cm, without dark coloration; fertile lamina 12-43 by 0.5-4.5 cm, base very gradually narrowed to narrowly truncate, then often somewhat lyrate, apex acuminate or to c. 2 cm caudate; sterile, if present, usually slightly shorter and wider, to 36 by 5.5 cm; texture thin-chartaceous, costa and lamina on lower surface without dark coloration, glabrous or with up to 2 mm long hairs, costa often with up to 2 mm pale to dark narrow scales. Sori in a single row close to the costa, or more scattered over a 2-5 mm wide zone close to or at a distance of up to 4 mm from the costa, indusium inconspicuous to distinct, to c. 1.5 mm wide, glabrous to hairy. Sporangial stalk with glands below the sporangium. Spores with coarse confluent ridges, surface pustulose or with pointed excrescences, outer layer variably perforated.

Restricted to rainforest.Terrestrial or epiphytic, growing in large clumps in clearings or on rock faces, or climbing tree trunks to a height of 25 m; often associated with nest-forming ferns.