p 



c 



~a 



PLATE 86. Diagrams of various flowers to show the arrangement of their parts. [After 

 KERNER.] 



,/. Flower of Butomus umbellatus, in which all the parts are distinct. B. Flower of Phytolaeca 

 decandra, in which the five carpels are somewhat united to one another. C. Flower of Ga^,-a 

 lutca, in which the three carpels are united to form a single pistil with one style but a three-parted 

 stigma. 



a, anther; c, carpel (the carpels when fused to form a single structure are called a pistil) ; 

 p, petal (the petals taken together compose the corolla) ; ps, pistil ; s, sepal (the sepals as a 

 whole compose the calyx) ; st, stamen, at the tip of which is the anther, which bears the pollen ; 

 stg, stigma, the tip of the pistil (it is adapted to receiving the pollen in fertilization). 



