By placing three or five plants in
clump-fashion, the beauty of this Broom is greatly enhanced.
C. ALDUS INCARNATUS (_syn C. incarnatus_) resembles C. purpureus in its
leaves and general appearance, but it is of larger growth. The flowers,
which are at their best in May, are of a vinous-rose colour, and
produced plentifully.
C. BIFLORUS (_syn C. elongatus_).--Hungary, 1804. This is a dwarf,
spreading, twiggy bush, of fully a yard high. Leaves trifoliolate,
clothed beneath with closely adpressed hairs, and bright yellow,
somewhat tubular flowers, usually produced in fours.
C. DECUMBENS.--A charming alpine species, of low, spreading growth,
bright-green three-parted leaves, and bearing axillary bunches of large
yellow, brownish-purple tinted flowers. A native of the French and
Italian Alps, and quite hardy.
C. NIGRICANS.--Austria, 1730. Another beautiful species, with long,
erect racemes of golden-yellow flowers, and one whose general hardihood
is undoubted. On its own roots, and allowed to roam at will, this
pretty, small-growing Broom is of far greater interest than when it is
grafted mop-high on a Laburnum stem, and pruned into artificial shapes,
as is, unfortunately, too often the case.
C. PURPUREUS.--Purple Broom. Austria, 1792. Alow, spreading shrub, with
long wiry shoots, clothed with neat trifoliolate leaves, and bearing an
abundance of its purple, Pea-shaped flowers.
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