Walking fern may refer to two species of fern in the genus Asplenium which are occasionally placed in a separate genus Camptosorus. The name "walking fern" derives from the fact that new plantlets grow wherever the arching leaves of the parent touch the ground, creating a walking effect. Both have evergreen, undivided, slightly leathery leaves which are triangular and taper to a thin point. On the bottom of the leaves, sori, or spore-bearing structures, cluster along the veins. These hardy plants can be found in shady spots of limestone ledges and limy forest places.