INTRODUCTORY 7 
direction after the fall of the petals. is by no s so constant as 
has been suppos Study in the field shows me that, in Cheshire 
and Surrey at least, strongly reflexed sepal those whose backs 
to write on such specimens, ‘“ Sépales redressés accidentellement.” 
Erect sepals are characteristic of R. glauca and R. coriifolia, but 
the characteristics by which two closely allied species may be 
discriminated, while in others greater latitude is allowed. e 
species, but even here an speci 
that much latitude is allowed. The whole section Canine is 
