3 66 



PLANT LIFE. 



-A fruit of Barbadoes cotton, open, exposing the voluminous hairs (commer- 

 cial cotton) which clothe the seeds. Natural size. — After Kerner. 



Fig. 



412. 



Fig. 



Fig. 412. — Fruit of Agritnonia, halved; showing torus, carrying calyx and withered 

 stamens above, covered with hooks, and enclosing the hard peril irp, with a single 

 seed. A pistil which did not mature lies to the right. Compare torus in tig. 288. 

 Magnified about 8 diam. — After Baillon. 



FlG. 413. — Fruit of tick trefoil {Desmodium Canadense). A, pods which separate into 

 sections, each containing one seed. They are covered with stiff hooked hairs, some 

 of which are shown enlarged at />'. A, natural size. />', magnified about 20 diam. — 

 After Kerner. 



