SEED DISPERSAL. 



463 



exquisite white flower clusters into grayish-white tufts, which scatter in the 

 autumn gusts into hundreds of arrow-headed, spiral plumes. The achenes 



Fig. 485. 

 Seed distribution of virgin's bower (clematis). 



have plumose styles, and the spiral form of the plume gives a curious twist 

 to the falling seed (fig. 485). 



