Author: Griffith, 1849a
Description
Rhizome bearing only scales. Roots restricted to the ventral side of lateral buds (sometimes borne all over the ventral side); scales light brown, without pale border, not hairy but with marginal setae at least in distal part, not toothed, smooth on the adaxial surface, basifixed with cordate base and much overlapping basal lobes. Stipes articulated to phyllopodia, grooved, glabrous or with few scales. Lamina compound, tripinnate or quadripinnate towards base and in the middle part, towards base deltoid and broadest or elongate, often narrowed, glabrous. Lamina not dimorphous. Pinnae linear-triangular. Pinnules of at least the larger pinnae anadromous. Pinnules or pinnalobes linear-oblong. Ultimate segments or lobes obtuse or acute without a pronounced tooth. Rachis adaxially side grooved. Leaf axes glabrous. Veins in ultimate lobes simple, not reaching the margin. False veins not present. Sori exindusiate, frequently single on a segment, facing midveins at the bending point.
Chromosomes
In Gymnogrammitis x = 36, the count from a plant in Yunnan, Dali also indicates diploidy (Kato et al., 1992: 108).
Distribution
See Gymnogrammitis dareaeformis .