16 



PRINCIPLES OF PLANT-TERATOLOGY. 



ear carnation, and a similar form is the lily which is 

 referred to in a later section. Less pronounced 

 examples of axis-elongation and acyclism are afforded 

 by the phenomenon of " spiralism " observed by 



Fig. 64. — Rosa centifolia (Garden Rose). Proliferation of flower in 

 which a foliage-shoot and flower Lave developed in place of the 

 andrcecium and pistil. fJ, foliage-leaves ; %>, petal ; s, sepal. 



Costerus and Smith in Gloriosa Plardiiaiid by Ducamp 

 in the American aloe {Agave americana). 



Vegetative proliferation of the flower is quite fre- 

 quent, the rose affording well - known examples ; 

 a specimen depicted (fig. 64) had a leafy shoot de- 



