Etymology Greek: lygodes, meaning flexible, because the rachis is flexuous, meaning it bends alternately from side to side

Description Rhizome: creeping, branching, short, blackish hairs.
Frond: deciduous, monomorphic.
Stipe: twining, vascular bundles: 1, a simple cylinder.
Blade: 2-pinnate, twining rachis, palmate or pinnate pinnae.
Pinnae: alternate, veins free.
Sori: , indusium: false, hood-shaped, sporangia: in 2 rows.

Distinctive Characteristics the twining nature of the stipe and rachis