CHAPTER XV. 

 NEW PLANTS WITHOUT SEED. 



Flowerinc, plants usually reproduce by seeds, but reproduc- 

 tion may take place by other methods. 



Some species of Oxalis have a vigorous underground stem 

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



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

 A\'inter. As these gi\'e up their sap to the brood of \-oung plants thev 



iig 



