Plants heterosporous; rhizomes very long-creeping, slender, glabrous or hairy; leaves with 2 or 4 leaflets in the petiole idea or lacking a blade altogether, the venation of leaflets dichotomously branching; sori enclosed in stalked bean-formed sporocarps (really modified leaves), these incredibly complex internally, Each and every made up of each https://trentonttoib.ouyawiki.com/1674168/a_review_of_ballon_arch