毛轴碎米蕨 mao zhou sui mi jue

Adiantopsis fordii (Baker) C. Christensen; Cheilanthes bockii Diels; C. boltonii Copeland; C. fordii Baker; C. mysurensis Wallich ex Hooker var. chusana (Hooker) Christ; C. mysurensis var. giraldii Christ; Cheilosoria chusana (Hooker) Ching.

Rhizomes erect, short; scales concolorous and reddish brown or bicolorous and dark brown to black with narrow orangish brown margins, lanceolate. Fronds tufted. Stipe dark brown, lustrous, 2-7 cm, densely scaly and with sparse, short hairs; scales occasionally bicolorous at base, but then grading abruptly to concolorous, reddish brown, lanceolate or subulate-lanceolate, adaxially grooved, groove with a pair of narrow winglike ridges along margins, these with brown, short hairs and/or narrow scales, some hairs and scales often minutely gland-tipped. Lamina green, elliptic-lanceolate to lanceolate, 8-28 × 2-6 cm, pinnate-pinnatisect, herbaceous, glabrous on both surfaces, somewhat narrowed at base, shortly tapered at apex. Pinnae 10-20 pairs, relatively closely spaced, oblique, subsessile; medial pinnae largest, 1-3.5 × 0.8-1.5 cm, lanceolate-triangular, acute or obtuse at apex; pinnae gradually reduced proximally and distally, widely separated; basal pair of pinnae oblong to triangular-oblong, equilateral, basiscopic pinnules not enlarged. Ultimate segments oblong to narrowly oblong, often decurrent at base, margins crenate, apex rounded to obtuse. Sori discrete. False indusia well developed, discontinuous, elliptic-reniform to reniform, margins otherwise entire or slightly irregular.

Rock crevices at roadsides, stream banks, forests; below 100-1500 m. Anhui, Chongqing, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Zhejiang [Japan, Philippines, Vietnam].