Polystichum (pol-list-ik-um),Dryopteridaceae Family, is a large genus of hardy ferns, native to temperate regions of the world. The narrow, lustrous green leaves grow in circular, arching clusters from the central rootstock. Most are evergreen; all are useful in the rock garden or fern garden in damp, shady locations. They need soil rich in humus. Propagate by spores or root division.