鼎湖山毛轴双盖蕨 ding hu shan mao zhou shuang gai jue

Basionym: Monomelangium dinghushanicum Ching & S. H. Wu, Acta Bot. Austro Sin. 2: 5. 1986.

Rhizome short, erect; fronds caespitose. Fertile frond 15-25 cm; stipe 4-5 cm, ca. 1 mm in diam.; rachis with dense long nodose soft hairs, pinnae subglabrous on both surfaces; lamina pinnatilobate, lanceolate, 14-16 × 3-5 cm, apex acute; pinnae 16-18 pairs, basal pinnae opposite, upper pinnae alternate, basal 2 pairs reduced, 5-10 mm; middle pinnae falcate, lanceolate or elliptic, 1.5-2.5 cm × 7-10 mm, acroscopic base auriculate, crenate at margin or pinnatilobate to serrate, apex acute; veins prominent, veinlets bifurcate (or trifurcate), pinnate in auricles. Lamina thinly membranous when dry, light brown; rachis densely hairy, hairs nodose, long, soft; pinnae glabrous on both surfaces. Sori shortly linear, indusia glabrous. Spores semicircular in equatorial view, perispore surface rugate or sparsely reticulate with granules in areoles.

● Valley forests; 700-900 m. Guangdong.