两色鳞毛蕨 liang se lin mao jue

Polypodium setosum Thunberg, Fl. Jap. 337. 1784; Aspidium setosum (Thunberg) Sweet; Dryopteris bissetiana (Baker) C. Christensen; D. paravaria Ching & P. S. Chiu; D. pseudobissetiana Ching ex K. H. Shing & J. F. Cheng; D. shanghaiensis Ching & P. S. Chiu; D. sinobissetiana Ching & Z. Y. Liu; D. thunbergii Koidzumi; D. varia (Linnaeus) Kuntze subsp. setosa (Thunberg) Sugimoto; D. varia var. setosa (Thunberg) Ohwi; Nephrodium bissetianum Baker; Polystichum bissetianum (Baker) Nakai.

Rhizome ascending, apex densely covered with narrowly lanceolate, black or nearly black scales. Fronds caespitose. Stipes stramineous, 15-50 cm, densely clothed with lanceolate, black, 1-2 cm, apically hairlike scales at base. Lamina ovate-lanceolate, 20-40 × 15-25 cm, cordate, tripinnate, acuminate. Pinnae 10-15 pairs, alternate, shortly stalked, acuminate; lowest pinnae largest, broadly lanceolate, ca. 15 × 7 cm. Pinnules 10-13 pairs, lanceolate, those on basiscopic side usually larger than on acroscopic side; lowest basiscopic pinnule on lowest pinna largest, ca. 6 × 1.5 cm, pinnatisect at base. Ultimate pinnules on lowest basiscopic pinnule 5-8 pairs, lanceolate, 1-1.5 cm × 3-5 mm, toothed or entire, acute. Veins obscure on both surfaces. Lamina subleathery, yellowish green; rachis and pinna rachis densely covered with bicolorous scales, brown and saccate at base, black and narrowly lanceolate above; pinnule costa densely covered with brown, bullate scales abaxially. Sori nearer costa than to margin; indusia brown, large, reniform, entire or ciliate.

Subtropical or temperate forests. Anhui, Fujian, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan, Zhejiang [Japan, Korea].