226 



FOUNDATIONS OF BOTANY 



anthX 



„_jS^ pap 



Fig. 24. —Bachelor's Button. 



I, a tubular flower (magnified) ; anth^ the united anthers ; IT, fruit (magnified) ; 

 III, fruit, vertical section (magnified) j IV, a neutral ray-flower ji V, ring 

 of anthers. 



Fig. 25. — Flower-cluster of Yarrow (Achillea Millefolmm) , enlarged. 



A, head seen from above ; 5, longitudinal section ; re, receptacle ; ch, chaff ; 

 i, involucre; r, ray-flowers ; d, disk-flowers ; c, corolla; s, stigma. 



1 This is not precisely homologous with the ray-flowers of Helicmthus and most 

 rayed Compositse, hut is an enlarged and conspicuous tubular flower. 



