Scientific name: AdiantaceaeEnglish name: Vietnamese name: Tóc thần vệ nữ; Ráng vệ nữOther name:
Erect ground fern or climbing epiphyte starting from the ground, of small to moderate size, rhizome long-creeping and solenostelic, or compact, ascending and dictyostelic, the young parts clothed in narrow, dark, non-peltate scales. Fronds long-stipitate, the stipes dark and polished, with 2 ribbon-like, +/- parallel vascular strands uniting upwards, to form a single 4-angled strand, the lamina simple, pinnate or up to 4-pinnately decompound, the axes dark and polished, pinnules dimidiate or couneate-flabellate, glabrous or variously hair, the veins usually free, flabellate, dichotomously branched from the base, sometimes irregularly anastomsing. Sporangia borne on simple, parallel veins on the under surface of reflexed marginal lobes, the lobes a pseudoindusium completely protecting the sorus, reniform at the base of a notch, orbicular or elongate-oblong on a tooth or entire margin, or elongate and uninterrupted along the side of the pinnule, paraphyses lacking, sporangia on long, 3-seriate stalks, annulus longitudinal, interrupted. Spores trilete, sometimes monolete, dark, smooth.