泸定对囊蕨 lu ding dui nang jue

Basionym: Lunathyrium ludingense Z. R. Wang & Li Bing Zhang, Acta Bot. Yunnan. 17: 303. 1995.

Rhizomes erect, stout, densely clothed with brown, membranous, ovate-lanceolate scales at apex and stipe bases. Fronds caespitose; fertile fronds up to 97 cm; stipe ca. 27 cm, ca. 5 mm in diam. at base; lamina pinnate-pinnatipartite, oblong-lanceolate, ca. 70 × 21 cm, base slightly narrowed, sterile, apex acuminate; pinnae 26 pairs, sessile, alternate, narrowly deltoid-ovate to ovate-lanceolate, 5-11 × 2-2.5 cm at middle, apex long acuminate; lower pinnae prominently broadened at base, pinnatipartite to narrow wings of costa; pinna segments 11-18 pairs, alternate, spreading, oblong, 12-16 × 3-5 mm, very approximate, toothed at margin, apex acute or obtuse-rounded; basal segments recurved to rachis. Veins visible, pinnate in segments, 6-9 pairs, alternate, often forked. Lamina herbaceous when dried, green. Sori oblong to shortly linear; indusia pale brown, oblong or lunate, membranous, erose at margin, persistent. Spores bilateral, perispore surface with more dense rugate-saccate or papillate processes.

● About 3600 m. Sichuan (Luding).

Deparia ludingensis is close to D. wilsonii but differs in the lower pinnae ovate-triangular or ovate-lanceolate, prominently enlarged at base, pinna base ± recurved to the rachis, and pinna segments acute or obtuse-rounded at apex and dentate at margin.