222 REGULAR PELORIA. 



altered from the inclined to the vertical position. In 

 addition to these changes, which are those most com- 

 monly met with, the number of the parts of the flower 

 is sometimes augmented, and a tendency to pass from 

 the verticillate to the spiral arrangement manifested. 

 Schlechtendal mentions some flowers of Tropa'olum 

 iiuijus in which the flowers were perfectly regular and 

 devoid of spurs,' while in the double varieties, now 

 commonly grown in greenhouses, the condition of parts 

 is precisely the same as . in the double violet before 

 alluded to. Among the Papilionacece the Laburnum 

 and others have been noticed to produce occasionally a 

 perfectly regular flower in the centre, or at the ex- 

 tremity of the inflorescence, though the peloria in this 

 flower is usually irregular. In the Gentianaceous genus 

 Halenia, H. heterantha is remarkable for the absence of 

 spurs. Amongst Oesneracecef Bignoniacece^ ScropMi- 

 lariacece, and other families of like structure, regular 

 peloria is not uncommon. Fig. 120 represents a case of 



Fio. 120. Regular peloria, Eccremocarptis scaber. 



this kind in Eccremocarpus scaher, conjoined, as is fre- 

 quently the case, with dialysis or separation of the 

 petals. Many of the cultivated Gloxinias also show 



' Linnsea,' 1837, p. 128. 



' M. Bureau, 'Bull. Soc. Bot. Fr.,' ix, p. 91, describes two genera of 

 Jiigtwniaceie in which the flowers are normally regular and six parted. 



