Fig. 123. Fragrant ehield fern (Aspid- 

 iy?7i frar/rans), showiriLr general 

 habit, and to the left (a) the nnder 

 surface of a leaflet bearing pori 

 covered l)y shield-like iiulnsia.— 

 After Marion Satterlee. 



Fig. 124. The bladder fern ( r//,sVcyj/m.s- ;)?/M- 

 ifera)^ showing general habit, and to the 

 right {a) the under surface of a leaflet, 

 sliouing tlie dichotomous venation, and 

 five sori iirntrclt'd by poueh-like mdusia. 

 — After Makton Satteui.ke. 



