or Sweet Brier. This
species has pink flowers and clammy leaves, which are glandular on the
under surface, and give out a fragrant smell by which it may be
recognised.

R. RUGOSA (_syn R. ferox of Bot. Reg._), a Japanese species, and its
variety R. rugosa alba, are beautiful shrubs that have proved themselves
perfectly hardy and well suited for extensive culture in this country.
They are of stiff, shrubby habit, about 4 feet high, and with branches
thickly clothed with spines becoming brown with age. Leaflets oval in
shape, deep green, with the upper surface rough to the touch, the under
sides densely tomentose. Flowers single, fully 3 inches in diameter, the
petals of good substance, and white or rose-coloured. The fruit is
large, larger than that of perhaps any other rose, and of a bright red
when fully ripe. In so far as beauty of fruit is concerned, this Rose
has certainly no rival, and whether for the rockwork or open border it
must be classed amongst the most useful and beautiful of hardy shrubs.
R. rugosa is a capital hedge plant, and being a true species it is
readily propagated from seed. R. rugosa Kamtschatika is a deep-red
flowered form with deciduous spines.

R. SEMPERVIRENS.--Evergreen Rose. South Europe and India, 1529. A
climbing species, with long, slender branches, armed with hooked
prickles. Leaves evergreen, shining, and composed of from five to seven
leaflets. The clustered flowers are white and sweet-scented.

R. SPINOSISSIMA (_syn R. pimpinellifolia_).--Burnet, or Scotch Rose. A
small bush about 2 feet high, of neat growth, with small leaves, and
pink or white flowers that are solitary at the branch ends.

R. VILLOSA.--Downy Rose. Europe (Britain). This species is of erect
bushy growth, with the leaflets softly downy on both sides. Flowers
white or pale pink, succeeded by globular fruits, that are more or less
covered with fine hair or prickles.

ROSMARINUS.

ROSMARINUS OFFICINALIS.--Common Rosemary. Mediterranean region, 1848. A
familiar garden shrub, of dense growth, with dusky-gray green linear
leaves, and pale blue or white flowers. There is a golden and a silver
leaved variety, named respectively R. officinalis foliis-aureis, and R.
officinalis foliis-argenteis; as also one distinguished by having
broader foliage than the species, and named R. officinalis latifolius.

RUBUS.

RUBUS ARCTICUS.--Arctic Regions of both hemispheres. An interesting
species about 6 inches high, with tri