Mr. Woops on the British Species of Rosa. 211 
paris superioris semper latius ; nunc ovato-elliptica, nune rhombeo-elliptica, plana, du- 
i plicato-serrata, serrulaturis glandulosis, paginis ambabus plerumque hirsutis sed sem- 
per inferiore. Pedunculi 1—16, modo setis debilibus, nunc pilis albis sparsis, et nunc 
pubescentià densâ, instructi, bracteis breviores. Receptaculum ellipticum, obscure 
fuscum, glabrum. Calycis foliola triangulari-elliptica, composita, pinnis confertis, 
lanceolatis, vel ovato-lanceolatis, incisis, glanduloso-serratis. Flores incarnati vel ru- 
bescentes. Styli inclusi; stigmata planiuscula, Fructus ellipticus, rarius subglo- 
bosus, intense ruber. 
Hedges and thickets, not uncomnion. 
B. Leaves hoary, with pubescence on both sides. Near Edin- 
burgh, Mr. Borrer, 
The leaves of this species are generally of a very dark colour, 
and always remarkably flat; the young leaves are tender at the 
edge, and frequently tinged with purple. This character it has 
in common with R. dumetorum and R. surculosa ; bút both these 
plants have simple serratures; and these marks, as well as the 
peculiar breadth of the terminalleaflet, may assist the investi- 
gator, in addition to the specific character and to the particula- 
rities already pointed out under R. micrantha, in distinguishing 
it from that species: from which, notwithstanding its affinity, it 
also strikingly differs in general habit. "The irregularity of the 
serratures in R. collina may sometimes create a difficulty be- 
tween this and that species. The calyx-leafits, the dark-green 
flat leaflets; and the broad terminal one, may help to decide 
in doubtful cases; yet some specimens I have been obliged to 
join to R. Borreri merely on account of the double serratures of 
the leafléts: and in the autumn of 1814 I observed a plant near 
Southgate, which, with all the other characters of R. Borreri, had 
nevertheless simple serratures: in 1815 the same plant had com- 
pound serratures. I have examined perhaps a hundred plants of 
this species, and my friends Mr. W. Borrer and Mr. E. Forster 
272 | —5 
