小蒿蕨 xiao hao jue

Grammitis blechnoides Greville, Ann. Mag. Nat. Hist., ser. 2, 1: 320. 1848; Ctenopteris blechnoides (Greville) W. H. Wagner & Grether; C. moultonii (Copeland) C. Christensen & Tardieu; Polypodium decorum Brackenridge; P. moultonii Copeland.

Stipe up to 0.8 mm, with hairs sparse to dense, short, up to 0.4 mm, simple and 1- or 2-forked, dark reddish brown. Lamina linear-oblong or linear-elliptic, 12-20 × 2-3 cm, base attenuate to cuneate, apex acuminate; pinnae horizontal, inclined, or widely ascending; middle pinnae longest, linear, linear-oblong, or very narrowly triangular, 12-17 × 1.8-2.7 mm, entire, obtuse at apex; basal pinnae shortened, narrowly to broadly triangular; rachises brown to dark brown, terete (at least in basal half); costae prominent on both sides, brown to dark brown; veins hidden, inconspicuous even with transmitted light; hairs simple and 1- or 2-forked, dark brown, up to 0.4 mm, occasional to scattered on both sides of rachis, occasional to sparse or absent on both surfaces of lamina and on margin at maturity, simple hairs surrounding receptacle obscured when sporangia are mature.

Epiphytic on tree trunks in dense forests; 600-800 m. Hainan [Borneo, Cambodia, S India, Indonesia, Malaysia, New Guinea, Philippines, Singapore, Sri Lanka, Thailand; Australia, Pacific islands].