113 



the triple ajither-sacs and two cases where but three stamens 

 constituted the androecium. In these latter cases one of the 

 three stamens bore the normal twin and the other two the triple 

 anther-sacs. Again, two, three or four stamens may bear single 



, 



Fif'3 



Fif. Y 



F>f S 



tf, (, 



Fig. 3-9 incl. represent sketches of cross-sections of some of the modified 

 flowers. Se., sepals; S. P., saccate petals; N. S. P., non-saccate petals; Tw. A. S. 

 twin anther-sac stamen; Tr. A. S., triple anther-sac stamen; A. S., anther-sacs; 

 s. s. a., single stamjen appendage; t. s. a., twin stamen appendages; O., ovary with 

 its placentae and ovules. 



appendages or as in the case of the stamens that bear the triple 

 anther-sacs, one or more may bear twin appendages. 



The ovary may be composed of three or four carpels. The 

 fourth carpel is often found in various stages of development. 



3. A certain amount of correlation or interdependence seem- 



