BIOLOGY OF THE FLOWER 



lb <j 



slightly hollowed receptacle, at the base of which is a fleshy, 

 ring-like nectary. From the centre is an upgrowth from 

 the receptacle, upon which are the numerous carpels. The 

 stigmas ripen before the anthers, and thus cross-pollination 



Fig. 114. i, Flowering Shoot of Rose; 2, vertical section 

 of flower ; a, stamen ; c, carpel ; ca, sepal ; p, petal ; Pr, prickle ; 

 r, receptacle ; st, stipule. 



is favoured. Flowers which thus bear their sepals, petals, 

 and stamens on the edge of a cup-like receptacle, and there- 

 fore around the pistil, are said to be perigynous. The 

 flower of the Strawberry should be carefully compared with 

 that of the Buttercup. 



