154 CAMPTOSORUS 



WALKING FERN; WALKING LEAF: 



Camptosorus rhizophyllus. 



Fronds small, evergreen, 4 to 12 inches long, 

 lobed or heart-shaped at the base, the early ones 

 short and blunt, the fertile usually gradually taper- 

 ing into a long, slender prolongation, which often 

 takes root at the tip, forming a new plant. 



Fruit dots elongated, scattered. 



Found on rocks forming dense mats. Abundant 

 locally from Maine to Ottawa and Minnesota, south 

 to Kansas, Alabama and Georgia. 



NOTES. 



