Flowers. 



205 



the outer wall of the ovary {d, C), the pistil is called 

 inferior and the flower epigynous. In determining the 



A*™"— ^»» 



li 



Fir,. 



123. 



Diagrammatic representation of the embryology of (/i) hypogynous, (5) perigy- 

 nous, and (Cand D) epigynous flowers. The receptacle is dotted, the sepals 

 and stamens are unshaded, the petals are black, and the pistil ruled horizontally. 

 In such flowers as B and D the tubular extension of the receptacle, commonly 

 called the tube of the corolla, may be considered a distinct member of the flower, 

 termed the ring leaf. (See Ganong, " The Teaching Botanist.") After Ganong. 



