378 



PLEIOTAXY. 



The same condition occurs frequently in some 

 species of Datura and Campanula. 



Fig. 191. Campanula rotundifolia. " Double flowers" resulting from 

 dialysis and multiplication of the petals. 



In Antirrhinum majus double flowers of this character 

 sometimes occur; the outermost corolla is normal, the 

 succeeding ones usually have their petals separate one 

 from the other; the stamens are sometimes present, 

 sometimes absent, and at other times petalodic. Similar 

 occurrences may be met with in labiates and jasmines, 

 and in Erica hyemalis. 



Mr. W. B. Hemsley has kindly furnished me with 

 flowers of a similar kind occun-ingin wild specimens of 



