Fig. 83 (b). 
a, a barren flower-liead laid open; b, a fertile flower-head ; c, a bisexual 
flower and young fruit; d, a fertile flower opened lengthwise; e, style; 
/, pollen-grains; g, a female flower and young fruit; h, style of a female 
flower; i, longitudinal section of an achenium; all variously magnified. 
