平行鳞毛蕨 ping xing lin mao jue

Nephrodium gymnosorum Makino var. indusiatum Makino, Bot. Mag. (Tokyo) 13: 65. 1899; Dryopteris gymnosora (Makino) C. Christensen var. indusiata (Makino) Makino ex Bonaparte; D. subfuscipes Ching ex K. H. Shing & J. F. Cheng.

Rhizome ascending, ca. 3 cm in diam., densely covered with scales at apex. Fronds caespitose. Stipes dark brown at base and stramineous upward, 20-35 cm, 2-3 mm in diam., base densely covered with lanceolate, black scales, upward subglabrous. Lamina ovate-lanceolate, 25-40 × 20-25 cm, bipinnate. Pinnae 10-15 pairs, opposite, ovate-lanceolate, 12-17 × 3-5 cm, sessile or subsessile, slightly shorter at base. Pinnules 10-12 pairs, oblong-lanceolate, 2-3 × ca. 1 cm, truncate, sessile, pinnatifid to pinnatipartite, apex obtuse; basal pinnules parallel to rachis; lowest basiscopic pinnule on lowest pinna slightly shorter than next and parallel to rachis. Segments 5-7 pairs, entire, 1- or 2-toothed and rounded at apex. Veins pinnate; veinlets simple or forked, visible abaxially. Lamina herbaceous, dark green, glabrous adaxially, scaly abaxially; rachis covered with sparse, black, lanceolate scales; pinna rachis and costa covered with brown, bullate scales. Sori nearer to costa than to margin; indusia brown, reniform, entire. n = 82(123).

Subtropical broad-leaved evergreen forests. Fujian, Guangxi, Guizhou, Hunan, Jiangxi, Sichuan, Yunnan, Zhejiang [Japan].