422 



llYrERTROPHY. 



defective development of the flowers. In the case of 

 the ash the terminal pedicels occasionally become 

 swollen and distorted, while the flowers are completely 

 deficient, as shown in the adjacent cut (fig. 202). 



In grapes a similar condition may occasionally be 

 met with in which the terminal pedicels become greatly 

 swollen and fused into a solid mass. It would seem 

 probable that this change is due to insect puncture, or 

 to the effect of fungus growth at an early stage of 

 development, but as to this point there is at present 

 no evidence.^ 



In the apple a dilatation of the flower-stalk below 

 the ordinary fruit may occasionally be observed, thus 

 giving rise to the appearance of two fruits superposed 

 and separated one from the other by a constriction. 



Pio. 203. Monstrons pear, showing extension and ramification of the 

 snecnlent floral axis. The bases of the sepals are also succulent. 



' Jaeger, ' Floi-a,' 1860, p. 49, tab. i. 



