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INTRODUCTION 27 
florets, are crowded together upon a single head. 
In the Thistle and in the flowers in the central 
part of the White Daisy we have illustrations of 
these florets in which the petals are united into a 
tubular corolla, as is shown in the right-hand 
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FLORETS OF COMPOSITE FLOWERS 
drawing of the figure above. In the case of the 
Dandelion the petals are united into a corolla 
which is tongue-like or strap-like and which is said 
to be ligulate. This is shown in the left-hand 
drawing of the figure above. If you will look 
through a simple lens at some of these florets from 
