180 The Ferx Lover's Companion 



(2) Interrupted Fern. Clayton's Fern 

 Osmunda Claytoniana 



Fronds pinnate, one to five feet liigh. Pinna? cut into 

 oblong, obtuse lobes. Fertile fronds taller than the sterile, 

 having from one to five pairs of intermediate pinn;e con- 

 tracted and bearing sporangia. 



Interrupted Fern. Osmunda Claytoniana 



