66 



PLANT KELATIONS. 



leaf display, and as a rule such stems do not produce 

 many foliage leaves, but the leaves are apt to be large. 



Fig. 46. A common fern, showing the underground stem (rootstock), which sends the 

 few large foliage leaves above the surface.— After Atkinson. 



The subterranean position is a good one, however, for 

 purposes of protection against cold or drought, and when 

 the foliage leaves are killed new ones can be put out by 



