腺毛肿足蕨 xian mao zhong zu jue

Plants 12-20 cm tall. Rhizomes prostrate, short, stout, densely scaly together with swollen stipe base; scales reddish brown, lustrous, narrowly lanceolate, ca. 1 cm × 1 mm, thinly membranous. Fronds approximate; stipe dark stramineous, 4.5-8 cm × 1-1.5 mm, glabrous below middle, upward covered with short, golden, and glandular hairs; lamina ovate, 7.5-13 × 8-10 cm, thickly papery, densely covered with golden glandular hairs on both surfaces especially along rachis, costae, and costules, 3-pinnate-pinnatifid at base, shortly acuminate and pinnatifid at apex; pinnae ca. 8 pairs, slightly oblique; basal pair largest, ovate-triangular, 4-7 × 2.8-4 cm, base truncate, with a 0.5-1 cm stalk, 2-pinnate-pinnatifid, ca. 2 cm apart from second pinnae, apex shortly acuminate; ultimate pinnules ca. 5 pairs, spreading, ovate-triangular, base cuneate and decurrent, pinnatifid, apex obtuse; segments 3 or 4 pairs, oblong, asymmetrical; second and upper pairs of pinnae gradually shorter, ovate-oblong. Veins obvious on both surfaces, ending at magin. Sori large, orbicular, 1-3 per segment, nearly confluent when mature; indusia light brown, reniform, small, seldom with 1 or 2 glandular hairs, ± submerged in sori. Spores ellipsoid, bearing inflated folds.

● Rock crevices on slopes; 300-1200 m. N Guizhou (Zunyi), Hunan.