镰叶耳蕨 lian ye er jue

Aspidium manmeiense Christ, Bull. Herb. Boissier 6: 965. 1898; A. marginatum Wallich ex Mettenius (1858), not Schkuhr (1809); Polystichum falcatipinnum Hayata; P. nepalense (Sprengel) C. Christensen f. subbipinnatum (C. Christensen) Ching; P. nepalense var. subbipinnatum C. Christensen.

Plants evergreen. Rhizome erect, densely covered with linear-lanceolate dark brown scales. Fronds 16-45 cm; stipe stramineous, 18-26 cm, 2-4 mm in diam. at base, lower part densely covered with linear-lanceolate dark brown scales and larger ovate dark brown scales, upper part sparsely covered with lanceolate scales. Lamina bipinnatifid, oblong-lanceolate, 22-35 × 6-8 cm, truncate, acuminate; rachis without proliferous bulbils, sparsely covered with lanceolate scales. Pinnae 20-24 pairs, alternate, attached at right angles to rachis or slightly ascendant, extremely shortly stalked, falcate-lanceolate, middle pairs 3-5 × 1-1.5 cm, bases oblique, acroscopic margins truncate, basiscopic margins cuneate, pinnatilobate or pinnatipartite, apices acute or acuminate. Lobes 4-6 pairs, alternate, ascendant, oblong or obovate, margins with several cartilaginous small teeth, apices rounded-obtuse or acute, mucronate; basal acroscopic lobes largest, often deeply lobed to pinna rachis, oblong or ovate, 8-12 × 5-6 mm; abaxially with ovate light brown microscales; frond texture leathery; venation pinnate on lobes, midribs indistinct abaxially, concave adaxially, lateral veins dichotomous, indistinct on both surfaces. Sori in 1 row on each side of midrib of lobe or pinna midrib; indusia entire.

Forests; 1600-2900 m. Guizhou (Leigong Shan), Taiwan, Xizang, Yunnan [Bhutan, N India, Nepal].