CHAPTER XV. 

 NEW PLANTS WITHOUT SEED. 



FLOWERING plants usually reproduce by seeds, but reproduc- 

 tion may take place by other methods. 



FIG. 107. Lily grow 

 ing in ostrich egg. 



Some species of Oxalis have a vigorous underground stem 

 system, upon which bulbs in great number are formed. 1 



1 In these species long roots filled with sap may be found in early 

 winter, As these give up their sap to the brood of young plants they 

 119 



