瘤蕨 liu jue

Polypodium scolopendria N. L. Burman, Fl. Indica, 232. 1768; Chrysopteris phymatodes Link, nom. illeg. superfl.; Drynaria phymatodes Fée, nom. illeg. superfl.; D. vulgaris (C. Presl) J. Smith; Microsorum scolopendria (N. L. Burman) Copeland; Phymatodes scolopendria (N. L. Burman) Ching; P. vulgaris C. Presl; Pleopeltis phymatodes T. Moore, nom. illeg. superfl.; Polypodium phymatodes Linnaeus, nom. illeg. superfl.

Rhizome 3-5 mm in diam., sparsely scaly; scales dark brown, ovate-lanceolate, peltate, clathrate, margin toothed, apex long acuminate. Stipe straw-colored or light chestnut, usually 20-30 cm, glabrous. Lamina usually pinnatifid, 35-45 × 30-35 cm, rarely simple or pinnately 3-lobed, rachis with wings ± as wide as lobes; lateral lobes usually 3-5 pairs, lanceolate, 12-20 × 2-3 cm, leathery, both surfaces glabrous, margin entire, apex acuminate; midrib raised on both surfaces, veins indistinct, areoles with many included veinlets ending in raised point. Sori orbicular, in 1 row or 2 irregular rows on each side of midrib, abaxially deeply hollowed and adaxially distinctly raised. Spore surface minutely echinate.

On rocks or on tree trunks; low elevations. Guangdong, Hainan, Taiwan [India, Japan (Ryukyu Islands), Malaysia, Myanmar, Papua New Guinea, Philippines, Sri Lanka, Thailand, Vietnam; Africa, Australia, Pacific islands (Polynesia)].