Walking fern may refer to two species of fern in the genus Asplenium

Asplenium

Asplenium is a genus of about 700 species of ferns, often treated as the only genus in the family Aspleniaceae, though other authors consider Hymenasplenium separate, based on molecular phylogenetic analysis of DNA sequences, a different chromosome count, and structural differences in the rhizomes...

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.

• Asplenium rhizophyllum
  Asplenium rhizophyllum
  Asplenium rhizophyllum, the American Walking Fern, is a rare, low lying fern native to North America. It is a close relative of Asplenium ruprechtii which is found in East Asia and also goes by the common name of walking fern.-Description:The name walking fern was derived from the way the fern...
  
  (syn: Camptosorus rhizophyllum), native to North America
• Asplenium ruprechtii
  Asplenium ruprechtii
  Asplenium ruprechtii, which goes by the common name Asian Walking Fern, is a rare, hardy, low lying fern native to East Asia. It is a close relative of Asplenium rhizophyllum which is found in North America and also goes by the common name of walking fern...
  
  (syn: Camptosorus sibiricus), native to East Asia

It may also refer to:

• Adiantum caudatum, a species of maidenhair fern

Sources

• "walking fern." Encyclopædia Britannica. . Encyclopædia Britannica Online. .