Dennstaedtiaceae >

Sori linear, marginal. Rhizome clothed with simple or pleuricellular hairs Dennstaedtiaceae
Sori linear, ± continuous and elongated in a marginal line. False indusium consisting of the recurved margin of the lamina, with or without a thin, inner true indusium which faces the costa
Veins free below the sori. Indusium 2-valved; the outer false indusium coriaceous; the inner true indusium thin. Rhizome clothed with simple hairs. Stipule-like pinnules absent at the base of the primary pinnae. Pteridium