~ 
ROSA GRANDIFLORA. 53 
known from specimens collected in Ireland by my 
friend Mr. Hooker. Their characters sufficiently indi- 
cate their particular differences. Pilosa can only be 
distinguished from involuta by the simple serratures of 
its leaves. It is very different nevertheless. 
Pallasti grows in elevated plains and exposed pre- 
cipices from the Northern part of the Altaic moun- 
tains, extending through Siberia. Its more robust 
habit and the approach to equal size in its prickles are 
its chief features. 
Rossica has exceedingly long slender prickles; it 
exists in the extensive herbarium of Sir James Smith. 
Islandica is the only Rose found in Iceland; its 
strong vigorous shoots led Mr. Hooker into the error of 
considering it Hibernica, which I believe has never been 
discovered out of the neighbourhood of Belfast, where 
it was first detected. 
Sanguisorbifolia has a different appearance from 
the rest. Its peduncles are very short, and its leaflets 
unusually numerous. Native country unknown. 
32. ROSA grandiflora. 
R. setis ramorum nullis, aculeis subzequalibus distan- 
tibus, foliolis planis impubibus simpliciter serratis. 
R. pimpinellifolia Bieb. taur. cauc. 2. 394 ? 
‘Hab. in Sibiria, Hort.; in Caucasi subalpini collibus 
sterilibus? (Bieb.) (v. s. c. herb. Lyell, Sabine.) 
It. is chiefly at the suggestion of Mr. Sabine that I 
have been induced to distinguish this from R. spino- 
sissima, They differ nearly in the same way as R. in- 
voluta and Sabini, except that the latter is much more 
