HYPERTROPHY. 4.21 
becomes apparent. A swollen bud or bulbil in this 
situation is not uncommon in some cultivated tulips 
and lilies. ‘The presence of small tubers in the axils 
of the leaves in the potato, as shown in fig. 201, is also 
not unfrequent. 
Enlargement of the flower-stalk—The cauliflower and 
broccoli afford familiar illustrations of hypertrophy of 
the flower-stalk, accompanied by a_ corresponding 

Fia. 202.—Inflorescence of ash (Firaxinus), with hypertrophied 
pedicels, flowers absent. 
