96 



FIRST LESSONS WITH PLANTS 



axis, and separate bulbs (or bulbels) are forming at 

 a, &, c, d. Each of these bulbels, 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. 



125. Onion 

 bulbs are shown 

 in Fig. 96. They 

 are of a different 

 make-up from 

 the lily bulb, for 

 the parts, in- 

 stead of being 

 narrow and over- 

 lapping longitu- 

 dinally, are thin 

 plates which en- 

 close the interior plates. 

 That is, the lily bulb is 

 a type of a scaly bulb, 

 and the onion of a laminate 

 or tunicated bulb. 



125<7. One of these onions has a very thick neck or stalk and a 

 comparatively small bulb. The top has grown at the expense of the 

 bottom, and the bulb is worthless for market. Such onions are known 

 as scullions. 



