基生鳞毛蕨 ji sheng lin mao jue

Plants 60-80 cm tall. Rhizome erect, short; scales of rhizome and stipe base dense, bright rufous-brown, ovate-lanceolate, apex hair-shaped, usually twisted. Fronds caespitose; stipe dark stramineous, 1/4-1/2 as long as lamina, longitudinally grooved, clothed with lanceolate, dark brown scales, leaving distinct scars, distally smaller, lanceolate, with sparse teeth; lamina oblong-lanceolate, 40-60 × 20-30 cm, widest at base, bipinnatipartite to tripinnatipartite, apex acuminate; pinnae ca. 20 pairs, oblong-lanceolate, 7-15 × 3-5 cm, widest at base, truncate, sessile, apex acuminate; pinnules 8-10 pairs, alternate, oblong-lanceolate, 2-3 × ca. 1 cm, apex obtuse, sides deltoid-dentate, basiscopic pinnules longer than acroscopic ones; segments 4-6 pairs, oblong, apex with sharp deltoid teeth. Lamina papery or thinly leathery; rachis clothed with lanceolate, brown scales; veins conspicuous on both surfaces, mostly forked. Sori 2-5 pairs on each pinnule, borne on upper parts of pinnules, nearer to costa than to margin; indusia ferruginous, orbicular-reniform, covering sorus at maturity, persistent.

Pinus forests, evergreen broad-leaved forest margins. Sichuan, Yunnan [Bhutan, India (Uttarakhand), Nepal].

Dryopteris tieluensis Ching & Y. P. Hsu (Fl. Tsinling. 2: 228. 1974), described from Gansu (Wenxian), was treated as a synonym of D. basisora by Fraser-Jenkins (Bull. Brit. Mus. (Nat. Hist.), Bot. 14: 213. 1986).