52 ROSA SPINOSISSIMA 
tioles setigerous and prickly; leaflets about 7, bright 
green, flat, simply serrated, orbicular or nearly so. 
Flowers solitary, without bracteze, cyathiform, blush co- 
loured; peduncles naked, or rough with glands and 
setze, as are the sepals, which are short and entire; 
tube ovate or nearly round, naked; pefals emarginate, 
concave; disk not thickened; styles villous, distinct. 
Fruit ovate or nearly round, black or dark purple, 
crowned by the connivent or somewhat spreading sepals. 
I have already given my reasons for differing from 
Afzelius as to the propriety of considering the “ R. spi- 
nosissima Linnzi prima et vera” to be A. cinnamomea. 
And I am equally unable to agree with Mr. Woods, 
that the pimpinellifolia of the Linnzan herbarium re- 
sembles R. rubella. On the contrary, I do not hesitate 
to pronounce it, as Sir James Smith has done long ago, 
indisputably my R. spinosissima « The work of 
Schrank cited for R. collina of that author I have been 
unable to examine, and therefore depend upon Rau for 
its accuracy. A. spinosissima of Gorter seems to be 
a cinnamomea ; whilst the plant called by the last name 
by Hermann must be spinosissima, on account of its 
orbicular leaves and rough peduncles. The figures of 
Bulliard and Flora Danica represent a very weak state 
of it. 
This can be confounded only with R. viminea and 
grandiflora; from the first its stout, straight shoots 
and strong prickles, and from the last the presence of’ 
numerous setz among the prickles of the branchlets, 
‘distinguish it. 
(© has the arms of the stem slender and reversed; 
its leaves are very glaucous, and in the spring it is co- 
vered all over with a profusion of snow-white flowers. 
Possibly it may have some pretensions to be a species. 
Its native country is unknown; unless the spinosissima 
of Jacquin, found wild in Austria and figured in his 
Fragmenta, should be the same; but the prickles are 
horizontal. Otherwise they are much alike. 
Varieties platycarpa, pilosa and turbinata are only 
