雙蓋蕨屬

Large terrestrial plants. Rhizome erect to suberect, often forming a caudex, with strong black roots. Fronds monomorphic, large, tufted, pinnately compound, often with proliferous buds distally along the costa. Stipe not articulated. Lamina herbacious to coriaceous, mostly glabrous, sometimes scaly on rhachis, costae and costules; veins free or anastomosing. Sori linear, elongated, paired; indusia linear, attached along its entire lenght, set back to back, i.e. the one opening outwards, the other inwards.