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A TEXTBOOK OF BOTANY [Ch. VI, 10 



external tulje, or corona, of the Daffodil to be. Prcrisely 

 the same is true of the gamopetalous corolla, and also of the 

 monadelphous stamens, although in cases where the stamens 

 are united, as in the Composita?, these anthers do actually 

 grow together although they originate separately. As to 

 the carpels, where two or more unite into a single pistil, 



Fig. 229. — Fuchaia speciosa, showing the raceme of morphologically 

 specialized flowers, with inferior ovarj', and both petals and stamens raised 

 on the caly.x tube. (From Bailey.) 



the case is quite clear, for ihey always originate separately 

 in the bud, and later actually grow together as they develop. 

 The mode of fusion of the carpels ilctermines the place of 

 the placenta? and the number of compartments (unfor- 

 tunately called cells) in the ovary. Thus in the Pulse family, 

 illustrated l)y the famihar green Pea, only one carpel is 

 concerned, and it infolds with a single jiarietal ]ilacenta 

 (Fig. 227). When two or more carpels unite to one jjistil, 



