GROUP OF ROSA STYLOSA 9 
The first-named is regarded by Rouy as another form of the 
Fi. sempervirens x stylosa hybrid, while Keller regards it as a 
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SECTION II. STYLOSA. 
GROUP OF ROSA STYLOSA. 
This group in technical characters runs very near that of 
ft. arvensis on the one hand, being connected therewith by 
fi. dibracteata, R. rusticana, &., and on the other runs near some 
of the Hu-canine, through R. leucochroa. 
Generally its members may be recognized by a stout, erectish 
habit, with very stout, broad, hooked prickles, dark shining green 
rather long acuminate leaflets, stipules not much enlarged to- 
wards the ends of the branches, long weakly hispid uncles, 
conspicuously conical disc, glabrous styles either united into a 
column, shorter than that of the arvensis group, or quite often 
only collected into a loose fascicle, when they do not differ from 
many Hu-canine species, but the stigmas are always a 
either in a conical or a cylindrical head, not a hemispherical or 
flattish one as in the Eu-canine. Exceptions, however, occur to 
all these characters, as they do in all groups. The best known of 
these aberrant forms in Britain is R. ochre Desy., which might 
be taken for one of the varieties of the R. dumetorwm group, near R. 
Deseglisei by those who do not know the Stylosa group well. This, 
however, is a local species, though abundant where it does occur, 
and the bulk of the members of the group are easily recognized. 
