黑鳞鳞毛蕨 hei lin lin mao jue

Dryopteris filix-mas (Linnaeus) Schott subsp. khasiana (C. B. Clarke) C. Christensen; D. junlianensis H. S. Kung; D. lepidopoda var. phaeocoma Ching & S. K. Wu; D. longistipes Ching; D. nigra Ching; D. neolepidopoda Ching & S. K. Wu; D. paleacea (T. Moore) Handel-Mazzetti var. khasiana (C. B. Clarke) C. Christensen; D. taiwanicola Tagawa; Nephrodium filix-mas (Linnaeus) Richard var. khasiana C. B. Clarke; N. parallelogrammum (Kunze) C. Hope f. khasianum (C. B. Clarke) C. Hope.

Plants 80-90 cm tall. Rhizome erect or obliquely ascending, stout, densely clothed with lanceolate, entire, ferruginous scales. Fronds caespitose; stipe stramineous, 15-30 cm, base densely scaly; scales black or dark brown, linear-lanceolate, ca. 2 cm, sparser upward; lamina ovate-lanceolate or lanceolate, bipinnatisect, base slightly narrowed or not, apex acuminate; pinnae ca. 20 pairs, alternate, remote, middle pinnae lanceolate, 13-14 cm, widest at base, 2.5-3 cm wide, shortly stalked, apex acuminate; segments 15-20 pairs, oblique, margin denticulate, apex rounded, deltoid-dentate. Lamina papery, clothed with linear-lanceolate, black scales on abaxial side of rachis and costae; lateral veins pinnate, forked, distinct abaxially. Sori 4-6 pairs on each segment, between costa and margin; indusia brown, orbicular-reniform, caducous.

Broad-leaved forests; 1900-2500 m. W Sichuan, Taiwan, Xizang, NW Yunnan [Bhutan, India, Kashmir, Nepal].