绒毛粉背蕨 rong mao fen bei jue

Rhizomes erect, short; scales concolorous or slightly bicolorous, brown, occasionally with lighter margins, sometimes slightly translucent, lanceolate. Fronds clustered. Stipe dark brown to black, lustrous, 10-15 cm, scaly at base or to midpoint of stipe; scales concolorous or bicolorous, light brown or brown with lighter margins, broadly ovate to ovate-lanceolate with filiform tips. Lamina oblong-lanceolate, 15-30 × 3-10 cm, pinnate-bipinnatifid, thinly herbaceous when dry, abaxially hairy along costae and costules, sometimes also with white farina abaxially, adaxially glabrous; pinnae 7-10 pairs, widely separated along rachis, basal pair of pinnae elliptic-triangular, 3-4 × 2-3 cm, sessile, bipinnatifid; pinnules 4 or 5 pairs, basal basiscopic segments longer than adjacent acroscopic ones, 1.5-2 cm × 7-10 mm, oblong, pinnatifid; second pair of pinnae triangular, slightly longer than basal pair; third and upper pairs gradually shortened distally. Veins pinnate, relatively conspicuous. Sori consisting of several sporangia, confluent at maturity. False indusia herbaceous, continuous or rarely discontinuous, margins undulate. 2n = 60, ca. 120.

Under shrubs or in rock crevices, usually on dry slopes; 2000-3900 m. Guizhou, Sichuan, Xizang, Yunnan [Bhutan, India, Myanmar, Nepal].

Lower Taxa

• Aleuritopteris subvillosa var. subvillosa
• Aleuritopteris subvillosa var. tibetica (Ching & S. K. Wu) H. S. Kung