iL ass oe ELEMENTARY BOTANY 
insects. Sometimes, as in the Cornflower, the outer florets 
have neither stamens nor carpels, and their only function is 
to attract insects. 
The disc florets are provided iti neoine and usually with 

Fic. 118, —MEpDIAN VERTICAL SECTION OF es | 
OF DoRONICUM. 
,: f ray florets ; d.f, disc florets ; 4.7, inflorescence- receptacle ; 
ww, involuere. 
carpels, so that they make fruit. In Coltsfoot, the disc florets 
do not make fruit, only the ray florets. 

Fic. 119.—Ray FLoRet oF Fic. 120.—Disc FLoREtT oF 
DoRONICUM. DoRONICUM. 
c, corolla ; sg, stigmas; ov, in-  ¢, corolla; », pappus, represent- 
ferior ovary. | ing calyx; a, anthers; sq, 
ae stigmas; ov, Ovary. 
On the whole, then, we may say that division of labour 
