176 Mr. Woops on the British Species of Rosa. 
cient to distinguish this from every other British Rose; indeed it 
belongs to a family of which we have no other example in these 
islands, distinguished principally by setose stems, straight prickles, 
globose germens, entire calyx leafits, lanceolate or oblong leaflets, 
and large distinct bracteæ. The sete and even the aculei are 
very apt to be deficient on the upper part of the plant; and in 
this intricate genus it is necessary to examine the whole plant, - 
and even many individuals of the species wherever it is possible. 
In all parts of the plant the setze are apt to fall off entirely; but the 
little papillæ, to which they were originally attached, are in general 
observable. This family includes R. Banksia and R. blanda, and 
perhaps we may unite with it R. parviflora, R. nitida, R. lucida, 
R. gemella, R. Lyoni, R. setigera, R. caroliniana, and R. caucasica, 
of the catalogue in Rees's Cyclopædia, to which I refer, as the 
work of a botanist of the highest authority, and as the most com- 
plete list of the genus hitherto published. I must, however, take 
this opportunity to declare that my knowledge of the foreign 
Roses is exceedingly slight and confined ; and that in this attempt 
to mark the subdivisions of the genus, I have drawn my notions 
of the plants almost entirely from the characters given in the 
above-mentioned work. The object of these enumerations is to 
make my ideas intelligible respecting the natural affinities of the 
several species. In all this tribe the setze are deciduous, and the 
aculei few and nearly equal, never passing by almost insensible 
gradations into setze, as they do in Rosa spinosissima, R.involuta, &c. 
This plant having hitherto been observed only in one place in 
these islands, I have no British varieties to enumerate. In coun- 
tries where it is plentiful it varies very much in appearance, if 
we may judge from the different names it has received, and the 
 discordant opinions as to what ought to be included in it as 
varieties, 
f 2. Rosa 
