226 Mr. Woods on the British Species of Rosa. 



9-. simplicitiscula. Calyx-leafits nearly simple. A slight difference 

 in the general habit induced me to gather this plant when I 

 observed it near Bctcliworth in Surrey; but I did not then 

 notice the character by which I now distinguish it. 



Among the British Roses with uncinate prickles and leaves 

 entirely without pubescence, J\. canina may be distinguished 

 from li. sarmcntacea by the simple serratures ; from K. surculosa 

 by its carinate leaves, and by the weak and slightly-hooked 

 prickles of the petioles ; from R. arvensis by its distinct and woolly 

 stvles. R. sempervirens is in habit and even in family quite a 

 distinct plant ; yet it is difficult to express any decided marks of 

 difference, except in the styles, which, though sometimes slightly 

 porrect in R. canina, are never lengthened out as in that species. 

 - Afzelius, De Rosis Siiecanis Tent. viii. 46, describes seven varie- 

 ties of Rosa canina, which he considers only a portion of the num- 

 ber of species into which this plant must be divided. The first 

 seems clearly to be the R. collina y of this essay. The second also 

 I should probably have enumerated among the varieties of that 

 species, but it is remarkable for a large globular hip as large &s 

 a plum — a very uncertain mark of comparison. The third plant 

 is R. canina (i ; the fourth, R. canina y ; the fifth, JR. canina u ; the 

 sixth appears to belong to my R. surculosa. R. rubifolia of Vil- 

 lars is quoted under the seventh of this list of Roses ; but Dr. Af- 

 zelius does not seem to be of opinion that the Swedish Rose is of 

 the same species as that of Dauphine; the former is perhaps 

 rather the R. canina S of this essay. Besides these, he mentions 

 many other Roses of this tribe as existing in his collection, which 

 not having seen alive he does not venture to describe. The various 

 appearances of this Rose are therefore probably as numerous in 

 Sweden as in this country. 



Desvaux, 



