84 §_—« THE SUBSECTION EU-CANINE OF THE GENUS ROSA 
B. mae yas with stout hooked prickles.  Petioles 
R. pyriformis Déségl. Tall. Leaflets ashy-green, sae 
both sides. Flowers white. Fruit pyriform. (Almo 
>. 
R. hapriiecks Rip. Low. Leaflets yah Broa glabrous 
above, hairy midrib beneath. Flowers white. Fruit 
ovoid or subglobose. (See under Eaboeer) 1, i: to) 
Subgroup iii. Leaflets biserrate. Peduncles eglandular and 
glabrous. 
Key to Britisn Sprecizs. 
Leaflets hairy above, at least when young, grey and thinly hairy all over 
. canescens Baker 
_— nee above, usually hairy only on midis and nerves 
R. hemitricha Rip 
Rosa CANESCENS 
Baker in Review of British Roses, p. 28 (1864). 
“Habit and prickles of normal plant. Leaves grey-green 
above, tolerably firm, and thinly hairy all over when young, but 
y so when mature, very grey beneath, and thinly hairy all 
over, but not at all glandular. Terminal not more than ovate, 
rounded a , Serrations open, not deep, furnished with 2-3 
gli pet accessory each side. Petioles villous, very 
slightly setose, with 2-3 hooked aciculi. ip 
hairy on the back and closely tesa laa Peduncles naked. 
Calyx-tube broadly ovate, scarcely urceolate. Sepals hairy on the 
bcos leaf-pointed and Soplonsty pinitiits, closely nt 
after petals fall obovate or subglobose, stone-hard 
whe green, not ripe till Gah by which time the sepals have 
of cam — Has a resinous scent. aes like tomentosa, but fruit 
of canina. 
-ti 
var. incana Borr., which variety certainly ae to the R. cori- 
folia group, though Mr. Baker does not place it therein. He pa 
remarks that “ #. canescens Baker, Review 28, exsicc 20, is 
form with stifling leaves, but with the fruit and sepals of his 
type’ fi. e. ciety I gather from this that he did not re regard it 
s bearing more than a Superficial resemblance to var. incana. 
On the other bape there is a specimen at Kew, from uetdale, 
labell - canescens by Mr. Baker, which would justify the above 
affinity, but the specimen is quite different in most of its charac- 
teristics No. 20, and bears the wall niddilees features of the 
R. a group in its broad head of densely woolly styles ; it 
