Fig. 78 (b). 
a, side-view of a flower-head, some of the flowers removed; b, side-view 
of a disk-flower; c, disk-flower laid open; d, pollen-grains; e, a ray-flower; 
/, style of a disk-flower; g, an achenium; h, transverse section of embryo; 
i, longitudinal section of embryo; all, but variously, magnified. 
