Dae IRREGULAR PELORIA. 
question become regular by the repetition of the irregu- 
lar parts. 
It is probable that peloria may occur in any habitu- 
ally irregular flower, and that, if more attention were 
directed to the subject, illustrations might be obtained 

Fic. 123.—Two-lipped flower of Aristolochia caudata. 
from a larger number of natural families than can be 
done at present. It is, however, necessary to exercise 
discrimination, and not to attribute to peloria all the 
cases that at first sight appear to be so referable. 
Thus, Professor Dickson exhibited at the Botanical 
Society of Kdinburgh, December 13th, 1860, four 
abnormal flowers of the common Indian cress (Tvropeo- 
lum majus), each presenting a supernumerary spur. On 
these he remarked that ‘‘in Tropewolwm the posterior 
