银毛肋毛蕨 yin mao lei mao jue

Nephrodium mannii C. Hope, J. Bot. 28: 145. 1893; Ctenitis fulgens Ching & Chu H. Wang; Dryopteris intermedia (Muhlenberg ex Willdenow) A. Gray var. mannii (C. Hope) Christ; D. mannii (C. Hope) Alderwerelt.

Rhizomes erect; rhizome scales brown, narrowly lanceolate, 5-7 mm. Stipe dark stramineous, 15-40 cm; stipe scales spreading, dark brown, subulate, 3-5 mm; scales on rachis and costae similar but smaller. Lamina 2- or 3-pinnatifid, broadly lanceolate, 20-30 × ca. 10 cm; pinnae 10-12 pairs; basal pinnae largest, triangular, 5-6 × ca. 4 cm; pinnules 5-8 pairs; basal basiscopic pinnules or lobes of basal pinnae longest, ca. 3 × 1 cm; bases of upper pinnae or lobes not obviously decurrent, without veinlets arising from rachis. Lamina herbaceous; veins free, distinct, no veinlets arising from costae. Sori medial, indusiate, indusia partly persistent. Perispore coarsely folded or tuberculate.

Forests; 100-200 m. Yunnan (Hekou) [NE India].