大叶鳞毛蕨 da ye lin mao jue

Nothoperanema giganteum Ching, Acta Phytotax. Sin. 11: 28. 1966.

Plants 1.2-1.5 m tall. Stipe 42-58 × 1-1.2 cm, lower part densely clothed with brown, ovate-lanceolate, entire scales, sparsely scaly upward throughout rachis. Lamina ovate-deltoid, 56-76 × 50-55 cm, tripinnate; pinnae ca. 15 pairs, basal 1 or 2 pairs opposite; upper ones alternate, stipitate, obliquely spreading; basal pair larger than others, broadly lanceolate, ca. 38 × 15 cm, bipinnate, base asymmetrical, apex caudate-acuminate; pinnules ca. 18 pairs, alternate, stipitate, slightly obliquely spreading, approximate; basiscopic basal pinnule larger than acroscopic one, oblong-lanceolate, ca. 17 × 4 cm, pinnate, base inequilateral, apex caudate-acuminate; ultimate pinnules ca. 12 pairs, oblong, ca. 2 × 1.2 cm, pinnatipartite; segments 6-8 pairs, obliquely spreading, oblong, 6-7 × ca. 3 mm, margin shallowly crenate or entire, apex rounded; second pinnae same size as basal pinnae, gradually shortened upward from third pair, lanceolate. Veins in ultimate pinnules pinnate; veinlets forked, running to lamina margin and visible abaxially. Lamina brown, papery, with brown, lanceolate scales on abaxial side of each rachis. Sori orbicular, terminal on veinlets, single, or 2 or 3 pairs on basal part of each segment, close to costa; indusia dark brown, orbicular, thickly membranous, persistent.

● Thickets, valleys; 1700-1800 m. NW Yunnan (Gongshan).