174 



COMPOSITE. 



[CLASS 



N.B. The carpels are described as two in number. 

 This is inferred from the 2-lobed stigma. 



The ovary is invariably I -celled, with a solitary erect 

 ovule. The number of sepals is inferred from analogy. 



COMPARE, in respect of the form of the corolla of the 

 florets, Spear Thistle, Daisy, and Dandelion. 



In Spear Thistle they are all tubular. 



In Daisy, the outside florets are irregular, one-sided, 

 strap-shaped (ligulate\ and white, constituting the ray ; 



n6. Vertical section of flower-head of Daisy. 



the inner florets are much smaller, regular, tubular, and 

 yellow, constituting the disk. In Daisy, and many other 

 plants with ray and disk florets as in that species, the 

 florets of the disk are apt all to become ligulate under 

 cultivation. 

 In Dandelion, all the florets are like the florets pf the 



