IV] 



DICHASIUM 



33 



Several important varieties of the cyme occur in 

 plants where the leaves or bracts are opposite, instead of 

 alternate. In the Dichasium (Figs. 10, A, and 11) we have 

 the axis ending in a flower (1), the oldest of all ; from the 



Fig. 11. Dichasium of Spindle Tree. 



axil of each of the two opposite bracts just below this 

 flower, springs a secondary pedicel, also ending in a 

 flower (2) and in its turn bearing tertiary pedicels 

 similarly ending in a flower (3), and so on. Examples 

 abound in Caryophyllacese, e.g. Cerastimn, Stellaria, &c., 



w. III. 3 



