腺毛蹄盖蕨 xian mao ti gai jue

Rhizomes short, erect or ascending, densely clothed with red-brown, narrowly lanceolate scales at apex and stipe bases. Fronds caespitose; fertile fronds ca. 50 cm; stipe dull brown at base, upward brownish stramineous, 14-16 cm, ca. 2 mm in diam. at base, upward glabrate; lamina pinnate-pinnatifid, lanceolate, 30-35 cm, ca. 6 cm wide at middle, gradually narrowed toward base, acuminate at apex; pinnae ca. 25 pairs, alternate, ascending, sessile, 4 or 5 lower pairs of pinnae gradually shortened, inclined, basal pinnae ca. 1 cm; middle pinnae falcate-lanceolate, 3-4 × 1.2-1.8 cm at base, base subtruncate, slightly auriculate on acroscopic side, pinnatipartite nearly to costae, apex acuminate; segments ca. 10 pairs, slightly ascending, approximate, oblong-lanceolate, 7-8 × ca. 2 mm, base decurrent to narrow costal wing, with up to 4 or 5 pairs of lobes or dentate, apex acute. Veins visible on both surfaces, pinnate in pinnules, lateral veins 4 or 5 pairs, very oblique, simple or forked. Lamina herbaceous when dried, brown, glabrate on both surfaces; rachis and costae brown-stramineous abaxially, with dense pale, short glandular hairs. Sori orbicular, medial, 4 or 5 pairs per pinnule; indusia pale, large, broadly ovate, membranous, suberose at margin, persistent. Perispore surface with prominent folds.

● Forest margins, shrub groves; 1500-3500 m. Sichuan, NW Yunnan.

Athyrium glandulosum is quite similar to A. rupicola in the frond shape but differs by the rachis and costae with dense, pale, short glandular hairs abaxially and by the middle pinnae falcate-lanceolate.