密羽角蕨 mi yu jiao jue

Rhizome short, erect; fronds caespitose. Fertile frond ca. 60 cm; stipe stramineous, shorter than lamina, base 2-3 mm in diam., with sparse broadly lanceolate brown thin scales and short thin hairs; lamina 1-pinnate, narrowly elliptic-lanceolate, ca. 40 × 15 cm, apex acuminate; pinnae up to 15 pairs, spreading, contiguous, sessile, lanceolate, subfalcate, up to 10 × 3 cm, base slightly asymmetrical, shallowly cordate, pinnatifid to pinnatipartite, serrate, apex acuminate; basal pinnae slightly reflexed, shorter, asymmetrical, base slightly reduced; pinna lobes up to 15 pairs, rectangular, margin shallowly repand or slightly rounded-crenate, apex rounded or truncate; veinlets up to 7 pairs, forked or simple, rarely pinnate. Lamina thinly papery, dark brown; rachis and costae abaxially with dense slightly curly, multicellular nodose hairs. Sori elliptic or shortly linear, subbasal near costae; spores reniform in equatorial view, perispore prominent, slightly rugate.

● Beside streamlets of evergreen broad-leaved forests; ca. 1800 m. NE Yunnan (Suijiang).