ROSA CORYMBIFERA 69 
species. The prickles of both are often re and hooked, but so 
are those of some other species in the two groups, while at least 
equally often the prickles of R. Jonciaiotls and F. obtusifolia are 
slender, though generally a good deal aoe nee sometimes they 
are straightish if specimens named by ¢ tent Continental 
botanists are to be relied upon. Finally, t the “leaflet ts of B. obtusi- 
folia are quite simply and eglandularly toothed, while those of the 
Borrert fea a at least somewhat, and almost always fully, 
glandular-biser 
My co SRS, are therefore that R. obtusifolia is equally at 
home in cissne group, but if made the representative of the Borreri 
Taking a fair average of the spasms number of specimens 
in Déséglise’s herbarium, R. obtusifolia Desv. has its prickles 
often, but by no means always, strong-based and hooked; they 
are quite frequently nearly straight, or, if hooked, are quite 
slender. The petioles are very villous, but not much glandular. 
The leaflets are usually small, oval or broadly oval, or ovate, 
rounded or ee = cuspidate at the apex, thinly pube- 
scent above, more densely so all over beneath. The nerves do not 
appear to be specially pate ) uncles are short, and 
fruit phere or ge A ovoid, very often in small clusters. 
The styles are shor a good deal in hairiness. Their 
nailatinmoee ecdanet Wy. by Déséglise, is not apparent. The 
flowers ar ae 
There are only two British examples in herb. Déséglise. One 
from pees South Devon, collected by Briggs, has small but 
stout long-based hooked prickles. Leaflets small, elliptical, mostly 
quite acute, not at all broad and subobtuse, less pubescent than 
usual beneath and subglabrous above. The styles are thinly 
hispid, and no fruit is formed. The other specimen from Botus 
Fleming, East Cornwall, has very strong hooked prickles, small, 
broad, obtuse leaflets, oe pubescent above, densely so beneath. 
Fruit not formed, but the calyx-tube would probably have pro- 
duced a subglobose aie 
Rosa CORYMBIFERA 
Borkhausen in Versuch einer forstbotanischen Beschreibung, 
p. 319 nee 
“Fruit ovoid, naked. Peduncles naked, in much-branched 
clusters. Sepals smooth, Hed allste Pistils short. Petioles 
woolly and prickly. Leaflets acute at each end, thin, hairy 
beneath. Stem prickly.—In height, stiffness, and prickly clothing 
_ like ng [R. canina Linn. The leaflets are oval, 
aaa: little acute, coarsely but sharply serrate, dark green and 
hairy both sides, the upper less than the lower, a shining, anda 
little plicate on the nerves. Petioles woolly, with ooked prickles. 
Flowers often five to seven in an umbellate More The middle 
