16 PRINCIPLES OF PLANT-TEEATOLOGY. 



ear carnation, and a similar form is the lily whicli is- 

 referred to in a later section. Less pronounced 

 examples of axis-elongation and acyclism are afforded 

 by the phenomenon of " spiralism " observed by 



Fie. 64. — Rosa centifolia (Garden Eose). Proliferation of flower in 

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

 andrcEcium and pistil, fl, foliage-leaves ; p, petal; s, sepal. 



Costerus and Smith in Gloriosa Plantii and 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- 



