HETEROTAXY 



183 



folia ^ Rudge, for an examination of which lie is in- 

 debted to Mr. Bentham. 



Fig. 96. Section of Bai-barossa 

 grape showing adventitious gi-ape 

 in the position of a seed. 



Fig. 97. Grape with supple- 

 mentary fruit in the interior. 



In the normal flower there is a turbinate hollow 

 calyx, whose limb is divided into five serrated lobes ; 

 alternating with these latter, and springing from the 

 throat of the calyx, are the petals. Originating from 

 the same annular disk as the petals are the stamens, 

 seven or eight in number. The ovary is partially adhe- 

 rent, is surmounted by a style, and has two or three loculi 

 with an axile placenta, to which several small curved 

 ovules are attached. The malformed flowers did not 

 present anything peculiar in their outer parts, nor did 

 the ovary, partially immersed within the expanded top 

 of the flower-stalk and the calyx-tube, which is con- 

 tinuous with that organ, show externally any indica- 

 tion of the change within. On cutting it across, 

 however, in any direction, numerous perfect stamens 

 (filaments and anthers) were seen projecting from 

 the walls of the cavity (fig. 98). In most of the 

 flowers the ovary was one-celled; but in a few 

 there was the usual axile placenta ; yet even in these 

 latter cases the stamens originated from the walls 

 of the cavity, and not from the placenta. The stamens 

 presented different degrees of development ; in some 

 cases they were fully formed, the anther-lobes open, 

 and the pollen exposed ; while in other instances the 



