ROSA STYLOSA 
differing from the type in its larger, more widely spaced leaflets, narrower 
in proportion, glabrous above and only thinly hairy beneath, and pale 
rose flowers. There are several other varieties, the more prominent 
of which are Rosa leucochroa Desv., which may be regarded as Rosa 
systyla with white flowers, though it is very often much more canina- 
like in character than either Rosa stylosa or Rosa systyla . This form 
is a very common one in the south-west of England and was formerly 
miscalled Rosa collina Jacq. Rosa virginea Rip. is a small form with 
smooth peduncles, white flowers and subglobose fruit. 
In addition to its glabrous, exserted style-column and very conical 
disc, Rosa stylosa in most of its forms can be distinguished from Rosa 
camna L. by its long peduncles with much narrower bracts. It is 
distinguished from Rosa arvensis Huds. by its stronger, more assurgent 
growth, and usually by its hairy leaflets, rose-coloured flowers, and 
shorter, much less firmly united style-columns. But some of its varieties 
approach that species very closely, and it also forms hybrids therewith. 
48 
