云南对囊蕨 yun nan dui nang jue

Dictyodroma yunnanensis Ching, Acta Phytotax. Sin. 9: 59. 1964.

Rhizome apex densely scaly; scales brown or dark brown, ovate-lanceolate. Fertile frond light brown when dried, up to 70 cm, with brown or dark brown, small, thin scales. Lamina 1-pinnate-pinnatilobate, oblong, up to 40 × 18 cm; free lateral pinnae 6-8 pairs, lanceolate, slightly oblique, sometimes subfalcate, base not narrowed, subtruncate, shortly stalked or sessile, margin slightly serrate, apex shortly acuminate; middle pinnae 8-10 × up to 3 cm; pinna lobes small, asymmetrical, apex obtuse, falcate; basal lobes slightly shorter than upper lobes, spreading; veins of pinnae and lobes obvious. Lamina dark brown when dried; stipe, rachis, and costae with sparse brown wormlike or shaggy small multicellular scales or hairs, costae adaxially with short multicellular hairs, but hairs very sparse. Sori located on both sides of veins, 1 or 2 pairs, oblique, mostly linear, single; indusia brown when mature.

● Dense forests; ca. 1500 m. Yunnan (Daweishan, Pingbian).