THE CARPEL AND OVULE 



:^53 



transverse section shows by its outline, by the arrangement of the 

 vascular strands, and by the position of the ovules that the compound 



Wsii. 



-Slv 



Fig. 19S. 

 WTiole gynneciiini of Caitha, 

 coiisistLiig ot iiiiiny carppls, all 

 separate. 



Fig. 199. 

 Pistil, or gyiioecium of Lily, show- 

 ing the relative positions of o\'ary, 

 ■^tylp, nnrl stigrna, F. O. B, 



structure is referable in origin to three fused leaves (Fig. 201). More- 

 over cases of partial fusion are found, for instance in Colchician, where 

 the three carpels are fused below, but extend upwards as separate 



Trans\-erse section through the separate 

 rarpels, composing the gvnoeciiiin of 

 ralUia. F. O.B. 



Transverse section of the syocarpous 

 o\"ary of Lily, showing the three folded 

 carpellarv leaves, bearing ovules on 

 their margins. F. O. B. 



styles. Their relative positions are, however, the same as of those 

 in the completely syncarpous Lily. Biologicallv the advantage of a 



