Polypodium virginianum

An uncommon fern found on exposed limestone.

Plant habit on a boulder in Martin State Forest, 7/23/04.

Sori at Martin State Forest, 7/23/04.

A leaf at Hemlock Cliffs, 1/24/04.

Plant habit in winter at Fern Cliff Nature Preserve, Putnam County, 26 Dec 2009.