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Polypodium setigerum Blume, Enum. Pl. Javae 2: 123. 1828; Grammitis intromissa (Christ) Parris; G. latifolia De Vol; P. intromissum Christ.

Rhizome with scales. Stipe 1.5-2.5 cm, with frequent to dense solitary medium to dark reddish brown hairs 3-4 mm. Lamina linear to broadly linear, 10-15 × 0.9-1.2 cm, base cuneate, margin entire, sometimes slightly undulate, apex acute or obtuse; lateral veins hidden, but visible with transmitted light at least in young fronds, 1- or 2-forked, endings with hydathodes; hairs simple and tufted, reddish brown, up to 3 mm, sparse to frequent on margin and abaxial surface, occasional to scattered on adaxial surface. Sori orbicular, superficial or shallowly depressed, nearer midrib than margin. Sporangia setose.

Epiphytic on tree trunks in dense wet mountain forests; 1400-1600 m. Taiwan [Borneo, Indonesia, New Guinea, Philippines].