Mr. Woops on the British Species of Rosa. 185 
by it to seek this speciesof Rose among the last-mentioned family ; 
the permanence of the setze, and their insensible gradation into 
aculei, which never occurs among that tribe, will serve to correct 
the error. 
| "n Rosa Doniana. 
R. ebracteata, caulibus setigeris, calycibus simplicibus, foliolis 
duplicato-serratis utrinque hirsutis, aculeis strictis inæqua- 
libus sparsis. 
Frutex bipedalis; in sepibus Sussexie interdum etiam quinquepedalis. Rami subdif- 
fusi, fusci, aculeis rectiusculis horizontaliter patentibus, insequalibus, gracilibus, spar- 
_sis, tandem in setas immutatis instructi. Petioli villosi, glandulosi, atque interdum 
aculeis minimis muniti. S/ipulæ lanceolato-lineares, glanduloso-serrate, tomentose, 
subgequales, sed interdum ez floribus propiores aliquantulum latiores, atque etiam in 
bracteas parvulas immutate. — Foliola 7 vel 9, elliptica, inflorescentize propiora sub- 
pauciora, par superius et foliolum impar ceteris majora duplicato-serrata, utrinque 
villosa, eglandulosa. Pedunculi solitarii, cylindracei, setis inæqualibus muniti. Re- 
ceptaculum globosum, fusco-viride, setis fortibus armatum. Calycis foliola subulato- 
lanceolata, elongata, simplicia, vel tantum hic illic lacinia filiformi instructa, petala 
æquantia, villosa, setosa, receptaculo viridiora, Flores expansi; petala alba, obcor- 
data. Styli iuclusi, — penses Fructus globosus, setosus: maturum 
+ pon vidi. eit 
catrehel by Mr. G. Don of Forfar, on the mountains of Clova, 
and by Mr. Borrer by the water of Leith near Mii also 
near Albourn and Henfield in Sussex. 
lam very happy in the name of this species to have an oppor- 
tunity of commemorating Mr. G. Don of Forfar, whose ability as 
an indefatigable investigator of our indigenous botany is well 
known, unfortunately now exerted no more. Mr. Don first ga- 
thered this plant, and distinguished it from R. involuta: and it 
merits observation, that though he relied entirely on the habit of 
the plant, all his specimens agree precisely with the artificial 
character I have adopted. Besides the particular differences 
pointed out under R. involuta, Mr. Don observed that the present 
VOL. XII. 2B species 
