METAMORPHOSIS. 



147 



spurred anterior petal, the four remaining ones also 

 bore spurs, thus giving rise to a peloric flower. 

 Owing to the fact that the two lateral anterior sepals 

 were fused together, the spur of the anterior petal was 

 turned inside out (fig. 120). 



The best-known cases of pelory are those of the 

 toadflax (Lin aria vulgaris) and the snapdragon (Antir- 

 rhinum majus) ; in these, besides the normally-spurred 



Fig. 121. — Linaria vulgaris (Toadflax), a, peloric flower with all 

 petals spurred; b, normal flower. (E. J. Salisbury photo.) 



anterior petal, all the others are also spurred, at least 

 in the completely peloric flowers (fig. 121). Fre- 

 quently all the flowers of the inflorescence are peloric ; 

 this fact, combined with the totally different appear- 

 ance, as compared with the normal, which peloric 

 flowers present, led Linnaeus, Adanson, and Jussieu 

 to suppose that the peloric form of Linaria vulgaris 

 was a cross between this and some other species. 

 Sometimes the terminal flower only is peloric. 

 In Calceolaria pelory is not at all uncommon. 



