云南舌蕨 yun nan she jue

Acrostichum yunnanense Baker, Bull. Misc. Inform. Kew 1898: 233. 1898.

Rhizomes shortly creeping, 3-7 mm thick, densely scaly; scales dark brown, subulate or narrowly lanceolate, ca. 4 mm, thickly membranous, margin irregularly serrate, apex acuminate and aristiform. Fronds close together; sterile fronds: stipe 4-16 cm, with dense stellate or subulate scales distally, partly deciduous when old; lamina narrowly lanceolate, 12-35 × 1.2-3.2 cm, leathery, brown when dry, both surfaces with sparse, small, brown, stellate scales, base narrowly cuneate, slightly decurrent along stipe, margin entire or somewhat undulate, thickened and slightly reflexed, apex long acuminate; midrib prominent on both surfaces, grooved above, veins visible, simple or once forked; fertile fronds sometimes shorter than sterile; stipe 8-22 cm, densely scaly; lamina linear-lanceolate, 13-21 × ca. 1 cm.

On tree trunks in secondary forests; 400-1800 m. Hainan, Yunnan [India, Malaysia, Vietnam].