354 



LUSSOlfS WITH PLANTS 



axis, and separate bulbs (or 

 bulbels) are forming at a 

 b, c, d. Each of these bulb- 

 els, as well as the mother - 

 bulb, is seen to be only a 

 mass of thickened scales, 

 and these scales are 

 transformed leaves. A 

 bulb, then, is only a 

 special kind of bud. 

 441. Onion bulbs are 

 shown in Fig. 

 370. They are 

 of a different 

 make-up from 

 the lily bulb. 



Pig. 372. 

 Bosette and offsets of house-leek. 



Fig. 371. 

 Top onions. 



for the parts, 

 instead of being 

 narrow and over- 

 lapping longitu- 

 dinally, are thin 

 plates which in- 

 close the interior 



