Vegetation heterosporous; rhizomes long-creeping, slender, glabrous or hairy; leaves with two or four leaflets on the petiole tip or missing a blade entirely, the venation of leaflets dichotomously branching; sori enclosed in stalked bean-shaped sporocarps (hugely modified leaves), these very complex internally, Every single containing each megasporangia and microsporangia; 3 https://balloon-arch-frame67912.thecomputerwiki.com/5781874/the_best_side_of_ballon_arch