腺叶蹄盖蕨 xian ye ti gai jue

Rhizomes short, erect, apex densely clothed with brown, subulate or lanceolate scales. Fronds caespitose; fertile fronds up to (20-)30(-40) cm; stipe blackish brown, upward stramineous, 10-20 cm, 1.5-2 mm in diam., base with sparse scales, upward glabrate; lamina 2-pinnate (or pinnate, pinnae pinnatifid), subdeltoid-lanceolate, 8-12 × 4-6 cm, base not narrowed, apex acuminate; pinnae 12-15 pairs, lower pinnae opposite, upper pinnae alternate, spreading or slightly ascending, sessile (or lower pinnae shortly stalked), basal pinnae lanceolate, somewhat falcate, 3-4 cm × 9-13 mm, base rounded-truncate, parallel alongside rachis on acroscopic side, pinnate, apex acuminate; pinnules 8-10 pairs, basal pinnules subopposite, upper pinnules alternate, ascending; basal pinnules larger, oblong, 5-6 × ca. 3 mm, base cuneate and adnate to costa, long toothed, apex rounded-truncate and toothed; suprabasal pinnules similar to basal pinnules but gradually smaller, decurrent and adnate to narrow wing of costule on basiscopic side; upper pinnae similar to basal pinnae but gradually smaller, inequilateral, auriculate on acroscopic side, cuneate on basiscopic side; veins visible on both surfaces, pinnate in pinnules, lateral veins ca. 4 pairs, oblique, simple. Fronds papery when dried, greenish brown, with shiny glandular hairs on both surfaces (particularly on adaxial surfaces); rachis and costae stramineous, glabrate abaxially, with needlelike spines on adaxial side at base of costa and costule. Sori large, ovate or orbicular, 1-3 pairs per pinnule, subcostular on basal acroscopic veins; indusia brown, small, oblong, membranous. Perispore surface without folds.

● Evergreen broad-leaved forests, wet areas; 2400-2800 m. SW Yunnan.