狭鳞鳞毛蕨 xia lin lin mao jue

Polypodium stenolepis Baker, Bull. Misc. Inform. Kew 1898: 231. 1898; Dryopteris atrata (Kunze) Ching var. stenolepis (Baker) Tagawa; D. gamblei (C. Hope) C. Christensen; D. hirtipes (Blume) Kunze var. stenolepis (Baker) C. Christensen; Nephrodium gamblei C. Hope; Thelypteris stenolepis (Baker) C. F. Reed.

Plants up to 1 m tall. Rhizome erect or obliquely ascending, apex with dense, linear to broadly lanceolate, entire, brown scales. Fronds caespitose; stipe ca. 40 cm, ca. 7 mm in diam., base gray-brown, distally pale brown, with dense lanceolate, brown or dark brown scales; lamina oblong-lanceolate, up to 70 × ca. 28 cm, once pinnate, base not shortened, apex acuminate; pinnae 30-40 pairs, lower ones opposite, upper ones alternate, narrowly lanceolate, ca. 15 × 2 cm, base rounded, margin coarsely dentate or lobed, apex caudate-acuminate. Lamina nearly papery, subglabrous adaxially, clothed with subulate, serrulate, brownish black scales along costa abaxially; veins pinnate, lateral ones simple, distinct on both surfaces. Sori in 3 or 4 rows on each side, nearer to costa than margin; indusia brown, membranous, readily deciduous.

Streamsides in forests, slopes; 700-2200 m. Gansu (Wenxian), Guangxi, Sichuan, C and NC Taiwan, Xizang, Yunnan [Bhutan, India, Nepal].