126 



WEEDS OF THE FARM AND GARDEN 



Fig. 63. Inflores- 

 cence. Panicle of 

 grass. 



flowers are produced by the same in- 

 dividual plant, as in corn ; dioecious 

 when the two kinds are borne on dif- 

 ferent plants, as in willows, poplars, 

 hemp, and moonseed. Polygamous 

 when some of the flowers are perfect 



Fig. 64. Inflorescence. Head of 

 clover. (C.M.King.) 



and some have pistils or stamens only-. 

 Flowers in which the petals are sepa- 



Fi g .6 5 . Inflorescence. rate are called polypetalous ; when the 

 Head of wild lettuce, petals are united, gamopetalous; when 



The type of inflores- t h e petals are wanting, apetalous. 

 cence in the sunflower T r 



family. (C. M. King.) ^ n some flowers different parts or 



