兆洪鳞毛蕨 zhao hong lin mao jue

Acrophorus macrocarpus Ching & S. H. Wu, Acta Phytotax. Sin. 21: 381. 1983.

Rhizome ascending, short, woody, terminal part densely covered with brown scales; scales lanceolate, ca. 1 cm, membranous, acuminate. Stipes tufted, 32-40 cm, 5-8 mm in diam. at base, brown, densely covered with scales same as on rhizome, subglabrous upward; lamina brown-green when dry, ovate, 35-60 × 25-40 cm, quadripinnatifid, papery, glabrous abaxially, sparsely covered with short nodose hairs adaxially; pinnae 6-9 pairs, always opposite, spreading, basal pairs 5-11 cm apart, basal pair largest, narrowly ovate, 25-40 × 13-18 cm, tripinnatifid, base rounded-truncate and slightly enclosing rachis, with short stalk 2-4 mm, apex acuminate; pinnules 10-12 pairs, basal ones opposite and shortened, alternate or opposite upward, basiscopic pinnule slightly longer than upper ones, bipinnatifid; ultimate pinnules 9-13 pairs, elliptic, spreading, distant, 1.5-3 × 0.6-1 cm, with 2 or 3 obtuse teeth, base broadly cuneate and close to rachillae, pinnatipartite to ultimate rachillae, apex obtuse; lobes rectangular, ca. 5 × 3 mm, lobed to 1/2 and undulate on both sides, undulate and rounded at apex; veins obvious on both surfaces, pinnate on lobes, veinlets simple or furcate, submarginal; rachis and rachillae stramineous, with narrow longitudinal groove adaxially, densely covered with nodose hairs at base, with 1 cordate brown scale abaxially. Sori orbicular, ca. 0.5 mm in diam., terminal on veinlet, 1 or 2 on each lobe; indusium brown, circular, membranous, attached at base.

● Dense forests; 1900-3300 m. Taiwan, Yunnan.