A. ascensionis is a small fern with a creeping habit.[2] The fronds measure 3–6 in (76–152 mm) long with 15-25 irregularly-shaped pinnae on each side.[3]
Ecology
Adult A. ascensionis plants are capable of reproducing vegetatively, with small plantlets growing from the tips of the fronds, or sexually, with spores that are dispersed by the wind. Spores seem to require damp, shaded conditions to germinate, with most young plants and gametophytes occurring in sheltered crevices.[2]
All known populations of A. ascensionis are located within the boundaries of Green Mountain National Park, a protected area, and the species is protected under a local wildlife protection ordinance that prohibits the taking or damaging of scheduled species.[2]