A conspectus of the native and naturalized species of Nephrolepis (Nephrolepidaceae) in the world Hovenkamp PH Miyamoto F Blumea 2005 50 279 322 4722L H. Christ H. Christ Polypodiopsida Nephrolepidaceae Nephrolepis Plantae Polypodiales 21 300 Tracheophyta species dicksonioides  Habit, rhizome morphology. Plants forming tufts of 2 or 3 fronds. Runners 1.5-2 mmthick, branching angle divaricate. Scales on runners dense, spreading. Tubers absent. Fronds 200 cmlong (or more), 16-18 cmwide, stipe 33-35 cmlong. Lamina base strongly reduced, tapering over  30 cm,basal pinnae 1.2-2.5 cmlong, 4-6 cmdistant, middle pinnae slightly to distinctly falcate. Sterile pinnae 9.5-11 by  1.6-2 cm,leathery, base strongly unequal, basiscopic base rounded or cordate, acroscopic base cuneate or truncate, not auricled, margin in basal part entire, towards apex crenate or serrate, apex acuminate or to 1.5-2.5 cmcaudate. Fertile pinnae 10-15 by  0.6-1.2 cm,different from sterile pinnae in the margin deeply incised between the sori, especially towards pinna-apex, and the apex more gradually narrowed to a 2.5-4 cmlong cauda. Indument. Basal scales pseudopeltate, spreading, 5 by  2-2.5 mm,central part rufous, shining, marginal glands absent, margin not hyaline, in basal part ciliate or fmbriate, in acumen ciliate or fmbriate. Rachis scales dense, with a well-developed protracted acumen, appressed (inconspicuous), hyaline or light brown, acumen ciliate. Scales on lamina absent. Hairs on lamina and costa absent. Sorimarginal (or nearly marginal), often on dilated teeth, especially towards the pinna-apex, 20-32 pairs on fully fertile pinnae, elongated (sometimes confluent near the base of the pinna), not impressed. Indusium broad, attached at broad base.  Distribution - Eastern part of Malesia: Celebes, Moluccas, New Guinea, Solomon Islands.  Habitat & Ecology - Terrestrial, on rocks, or epiphytic. Disturbed places in lower montane forest, in ridge forest or disturbed secondary forest,  400 -1900 m.  Note - Nephrolepis dicksonioideshas been confused with N. abruptaand N. acuminata. It has fertile pinnae similarly incised as typical specimens of N. acuminata, and marginal sori similar to those of N. abrupta, but differs from both in the indusium having a broad base, innervated by 2 or 3 veins. The apex of the sorus-bearing tooth is often dilated. From N. abruptait can also be distinguished by the shape of the pinnae: the fertile ones are more constantly deeply divided, the sterile ones more distinctly acuminate, narrowing to a distinct cauda from c. halfway. 923901028 2005-01-01 2005-12-31 2005-01-01 P Sarasin 1030 Guinea Celebes 21 300 Celebes 923901030 923901037 923901031 2005-01-01 2005-12-31 2005-01-01 K, L, P Schlechter 16494 Guinea New Guinea. 21 300 New Guinea. Type