a North American fern, Camptosorus rhizophyllus, having sword-shaped fronds, the tips of which take root when in contact with the ground: family Aspleniaceae
walking fern in American English
US
a native American fern (Camptosorus rhizophyllus) of the most common family (Polypodiaceae) of ferns, having simple lanceolate leaves with a protracted tip that roots when it touches the ground