104 
Mr.Neiil ,o?j the Ayrshire Rose. 
of the Flora Britannica are cultivated. At my request, Mr 
David Don (son of the late eminent Mr Don of Forfar, and a 
very promising young botanist) has, for some time past, paid 
^ great attention to the growth and appearance of the two species, 
and has drawn up the following characters of each. 
1. Rosa arvensis. White Dog-rose . — Surculis longissimis pro- 
cumbentibus fpliolis ovatis inaequali-serratis subtus tantum 
hirsutis ; fructibus globosis pedimculisque nudiusculis. 
Caules decumbentes, siirculi longissimi procumbentes teretes Ise- 
vissimi rubescentes ; aculei sparsi uncinati ; foliola septena ovata 
inaequali-serrata, supra glaberrima, subtus aliquantum hirsuta ; sti- 
pulss integrse apice acutae margine ciliatae, petioli supra canaliculati 
utrinque pubescentes ; pedunculi elongati nudiusculi ; fructus glo- 
bosus glaber, stylis unitis antheras subaequantibus. 
2, Rosa capreolata. Ayrshire Rose . — Surculis flagellatis procum- 
bentibus, foliolis ellipticis sequaliter serratis utrinque gla- 
berrimis ; fructibus ovatis (collo constricto) pedunculisque 
glandulosis. 
Caules decumbentes ramosissimij sufculi flagellati procumbentes 
aculei sparsi falcati; foliola septena elliptica breve acuminata aequa- 
liter serrata utrinque glaberrima, supra nitida ; rubescentes nitidi 
pruinati ; stipulae apice acuminatae m.nrgine integerrimse pilis glan- 
duliferis ciliatae^ petioli supra canaliculati utrinque nudi ; segmenta 
calycina subsimplicia elliptica apice cuspidata^ extus glandulosa 
pilosa, intus tomentosa ; pedunculi elongati glandulosi, petala obcor^ 
data alba ; filamenta basi reclinata, apice ascendenti-inflexa, anthers? 
lutese^ stylis in cylindrico coalitis, stamina subsequantibus, stigmata 
brevissima barbata: Fructus ovatus (collo constricto) pilis glandu- 
liferis raris adspersis ; dores corymbosi. 
The Rosa arvensis is common in hedges and waste grounds 
in England ; but is comparatively of rare occurrence in Scot- 
land. 
The trivial name capreolata^ having allusion to its climbing 
nature, was first applied to the other species by the late Mr 
Don, who cultivated it as a distinct species for many years in 
his curious botanic garden at Forfar. This is nearly allied to 
the former ; but, as may be remarked from comparing the cha- 
racters above given, the two species differ particularly in the 
following respects. 
In R. capreolata, the leaflets are more shining and more elon- 
gated than in R. arvensis. In the former, they are quite 
-smooth on both sides, and equally serrated at the margins ; 
while, in the latter, they are somewhat hairy on the under side, 
