☆ 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
See walking fern in American Heritage Dictionary 4
noun
An eastern North American fern (Camptosorus rhizophyllus) having undivided fronds that often take root at the tip.