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 Tropawolum 
majus 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 Papilionacee 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 Gesneracee, Bignowacee, Scrophu- 
lariacee, and other families of like structure, regular 
peloria is not uncommon. se 120 represents a case of 

Fic. 120.—Regular peloria, Hecremocarpus scaber. 
this kind in Hecremocarpus scaber, conjoined, as is fre- 
quently the case,’ with dialysis or separation of the 
petals.” Many of the cultivated Gloxinias also show 
1 ‘Linnea,’ 1837, p. 128. 
2 M. Bureau, ‘ Bull. Soc. Bot. Fr.,’ ix, p. 91, describes two genera of 
Bignoniacee in which the flowers are normally regular and six parted. 
