Dec. 1910.] BOTANICAL SOCIETY OF EDINBURGH 141 
R. coriifolia or R. glauca, the former if the leaflets are 
hairy, the latter if the leaflets are glabrous. If the sepals 
become reflexed either R. canina or R. dumetorwm may be 
the second parent, the former if the hybrid has the leaflets 
glabrous, the latter if the leaflets are hairy. 
A new variety of R. hibernica has been described by Mr. 
Barclay in “Journ. Bot.,” 1910, p. 332; and since I was with 
Mr. Barclay when the plant was found, it may not be out 
of place to mention the record here. The locality is the 
sea-coast about one and a half miles east of Port Seton. 
In all the described British forms of R. hibernica, the 
serration of the leaflets is simple or very nearly so, and the 
sepals and peduncles eglandular. The Port Seton plant 
differs in having leaflets with a decidedly compound serra- 
tion, generally two but sometimes three denticles on the 
lower edge of each tooth and occasionally one on the upper, 
the majority of the denticles ending in a gland. The 
leaflets, like some other forms of the hybrid, are hairy on 
the under surface. The peduncles are sparingly glandular, 
sometimes naked. The sepals are nearly simple, and more 
or less glandular on the back. 
According to Mr. Barclay, no form resembling this has 
been previously found either in Britain or on the Continent. 
R. armatissima, Déség., a form which occurs on the Con- 
tinent, is described as having biserrate leaflets, but without 
hairs on the under surface, and quite eglandular. Thus 
the second parent in the two forms cannot be the same. 
The second parent of the Port Seton rose, since the sepals 
become erect and since the leaflets are hairy, is probably 
a variety of R. coriifolia, Fr., with biserrate leaflets, and 
with peduncles and sepals glandular, 7.c. a variety of the 
group Rk. Watsoni, Baker. 
The third group is Pimpinellifoliz x rubiginos, and so 
far as I know, the hybrid has not in this country received a 
specific name. The rose is rather rare, and it is only within 
recent years that its occurrence in Britain has been hinted 
at, although a form resembling it has been known on the 
Continent for some time. It occurs in only a few places in 
Britain. It has been found in the south of England, and 
till this year was known in two localities in Scotland. Mr. 
Barclay discovered it near Caputh in 1897, and a few years 
