DOG ROSE 167 
Common Dog Rose is found in every part of Great Britain, N. to 
the Orkneys, and ascends to 1350 ft. in Yorkshire. It is native in 
Ireland and the Channel Islands. 
The Dog Rose is one of those flowers that help to call up memories 
of pleasant rambles along the highway, and is one of the greatest 
ornaments of our wayside hedges, in fields removed from the roads, 
and in isolated bushes, as well as on commons and heaths. 
It forms a certain proportion of the undergrowth in brakes and 
thickets or woods. 
A prickly climbing shrub, the Dog Rose is a tall, arching bush, 
with a green or purple stem, armed with strong, equal, curved-back 
prickles, which serve as a protection and for climbing, smooth, shiny, 
with simply or doubly coarsely-toothed, rigid leaflets, the leaves being 
arranged each side of a stalk, egg-shaped, coarsely-toothed, the upper 
surface shining, the lower mostly smooth or hairy. 
The Dog Rose has the shrub habit. It is a large bush, with long, 
spreading, arching branches. The prickles are scattered, uniform, 
stout, broad, equal-hookea, the base thickened. The leaves are 
pinnate. The leaflets are hairless, simply-toothed, the secondary 
nerves not glandular, acute, flat, or keeled. 
The leaf-buds consist of scales with 3 projections at the tip, which 
are the leaf bases, and the stipules and upper part of the leaf are the 
3 projecting points. The outer scale is the shortest. 
Everyone welcomes the appearance of the first Dog Rose in flower 
in summer. The flower varies from white to pink. In this it is a 
whitish-pink. The sepals are unequal, owing perhaps to the arrange- 
ment of the leaves in the bud. The edges of two are covered, two are 
not, and in the fifth, one side is and the other not covered, and the 
uncovered edges are bearded. 
The sepals are naked, bent back, pinnate, falling, 5, free, on the 
rim of an egg-shaped receptacular tube. The disk is flat, the mouth 
conspicuous. The flower-stalks are usually naked. The styles are 
distinctly hairy, free, or nearly free. The fruit is egg-shaped to 
pitcher-shaped, roundish, the numerous achenes being included in the 
searlet hip or receptacular tube which serves in the place of a pericarp. 
There are numerous 1-seeded carpels, which are clothed in long 
hairs, sunk in the receptacle, which is globular, open at the apex. 
The Dog Rose attains a height of 8-1o ft. It begins to flower in 
June and continues in July. It is a perennial, deciduous shrub. 
The flowers are conspicuous, wide open, and scented, and there is 
abundant pollen, but no honey. The flowers are homogamous, the 
