RUBUS ARCTICUS.--Arctic Regions of both hemispheres. An interesting
species about 6 inches high, with trifoliolate leaves, and deep-red
flowers. For Alpine gardening it is a valuable species of dwarf growth.
R. AUSTRALIS, from New Zealand, is a very prickly species, with the
leaves reduced to their stalks and the midribs of three leaflets. Not
being very hardy it is usually seen as a wall plant.
R. BIFLORUS.--Himalayas, 1818. A tall-growing species with whitish,
spiny stems, and simple three-lobed leaves that are tomentose on the
under sides. The flowers are thickly produced, pure white, and render
the plant highly attractive, and of great beauty.
R. DELICIOSUS.--This Rocky Mountain Bramble (1870) is a very worthy
species, with three or five-lobed (not pinnate) leaves, and large, pure
white flowers that are each about 2 inches in diameter, and produced in
profusion from the leaf-axils. For ornamental planting this may be
placed in the first rank of the family to which it belongs.
R. FRUTICOSUS.--Common Bramble, or Blackberry. Of this well-known native
species there are several worthy varieties, of which the double-flowered
are especially worth notice, blooming as they do in the latter part of
summer. R. fruticosus flore albo-pleno (Double white-flowered Bramble),
and R. fruticosus flore roseo-pleno (Double red-flowered Bramble) are
very pretty and showy varieties, and well worth including in any
collection. There is a pretty variegated-leaved form of the common
Bramble, known as R. fruticosus variegatus.
R. LACINIATUS, Cut-leaved Bramble, might also be included on account of
its profusion of white flowers, and neatly divided foliage.
R. NUTKANUS.--North America, 1826. This has white flowers, but otherwise
it resembles R. odoratus.
R. ODORATUS.--Purple flowering Raspberry. North America, 1700. The
sweet-scented Virginian Raspberry forms a rather dense, upright growing
bush, fully 4 feet high, with large broadly five-lobed and toothed
leaves, that are more or less viscid, sweet-scented, and deciduous. The
leaves are placed on long, hairy, viscid foot-stalks. Flowers in
terminal corymbs, large and nearly circular, purplish-red in colour, and
composed of five broad, round petals. The fruit, which is rarely
produced in this country, is velvety and amber-coloured. It is a very
ornamental species, the ample Maple-like leaves and large flowers
rendering it particularly attractive in summer. The leaves, and not the
flowers as is generally supposed, are sweetly scented.
R. ROSAEFOLIUS.--Rose-leaved Raspberry. Himalayas, 1811. Another
half-hardy species, and only suited for planting against sunny walls.
Leaves pinnate, finer than those of the Raspberry. R. r. coronarius,
with semi-double white flowers, is better than the type.
R. SPECTABILIS.--The Salmon Berry. North America, 1827. Grows about 6
feet high, with ternate or tri-lobate leaves that are very thickly
produced. Flowers usually bright red or purplish-coloured, and placed on
long pendulous footstalks. It is of very dense growth, occasioned by the
number of suckers sent up from the roots.
There are also some of the so-called American Brambles well worthy of
attention, two of the best being Kittatiny and Lawton's:
The brambles are particularly valuable shrubs, as owing to their dense
growth they may be used for a variety of purposes, but especially for
covering unsightly objects or banks. They are all wonderfully
floriferous, and succeed admirably even in very poor and stony soils.
Increase is readily obtained either from root suckers or by layering.