美丽对囊蕨 mei li dui nang jue

Athyriopsis concinna Z. R. Wang, Acta Phytotax. Sin. 20: 237. 1982; A. membranacea Ching & Z. Y. Liu.

Plants summer-green. Rhizome ascending, up to 1.5 cm in diam. including remaining stipe bases, apex and stipe base with sparse brown, ovate-lanceolate scales ca. 5 mm; fronds caespitose. Fertile fronds 23-55 cm; stipe 8-30 cm, 1-2 mm in diam.; lamina ovate-oblong, 12-25 × 8-20 cm, abruptly narrowed at apex, acuminate; free pinna 5-9 pairs, spreading or slightly ascending, lanceolate or oblong-lanceolate, up to 10 × 3 cm, base truncate or broadly cuneate, sessile, pinnatipartite, apex acuminate or acute, rarely subrounded; basal pinnae usually reflexed, reduced or not, basal basiscopic lobes often prominently short; pinna lobes up to 15 pairs, slightly ascending, oblong, up to 1.5 cm × 8 mm, margin crenate or subentire, apex subroundedor subtruncate; veins pinnate with up to 7 pairs of veinlets, veinlets simple or forked. Lamina thinly herbaceous, light green when dry; both sides of costae and midribs hairy with gray-white or light brown, long and short nodose hairs, between veinlets ± with gray-white short nodose hairs. Sori oblong, 0.5-1.5 mm, usually single, double on basal acroscopic veinlets; indusia not incurved at margin, erose, with short deciduous hairs. Spores elliptic in polar view, semicircular in equatorial view, perispore surface with dense and unevenly long aculeate projections. n = ca. 80*.

● Evergreen broad-leaved forests; 1000-1800 m. Chongqing (Nanchuan), Guizhou, Hunan (Yizhang), Sichuan (Emei), Yunnan (Lunan).