Polypodium virginianum, commonly called common polypody, Virginiana polypody, rockcap fern or American wall fern, occurs on boulders, rocks, ledges and bluff crevices of sandstone, chert or granite. This is an evergreen fern that grows in creeping clumps to 10” tall with erect to arching, leathery, oblong-lanceolate to triangular, deeply-cut, pinnately lobed fronds. Recent research indicates this plant is a naturally occurring fertile hybrid of P. appalachianum and P. sibiricum