Plants heterosporous; rhizomes long-creeping, slender, glabrous or hairy; leaves with 2 or 4 leaflets for the petiole tip or lacking a blade completely, the venation of leaflets dichotomously branching; sori enclosed in stalked bean-formed sporocarps (highly modified leaves), these quite complex internally, Every made up of both equally megasporangia and https://ballonarch65310.wikijournalist.com/5519765/balloon_arch_frame_options