C. VITICELLA.—­Spain, 1569.  This is a well-known species of not too rampant growth, and a native of Spain and Italy.  The flowers vary a good deal in colour, but in the typical plant they are reddish-purple and produced throughout the summer.  Crossed with C. lanuginosa, this species has produced many ornamental and beautiful hybrids, one of the finest and most popular being C. Jackmanii.

C. WILLIAMSI (syn C. Fortunei).—­Japan, 1863.  The fragrant, white flowers of this species are semi-double, and consist of about 100 oblong-lanceolate sepals narrowed to the base.  The leathery leaves are trifoliolate with heart-shaped leaflets.  It proves quite hardy, and has several varieties.

GARDEN VARIETIES.—­As well as the above there are many beautiful garden hybrids, some of which in point of floral colouring far outvie the parent forms.  Included in the following list are a few of the most beautiful kinds:—­

Alba Victor. 
Alexandra. 
Beauty of Worcester. 
Belle of Woking. 
Blue Gem. 
Duchess of Edinburgh. 
Edith Jackman. 
Fairy Queen. 
John Gould Veitch. 
Lady Bovill. 
Lord Beaconsfield. 
Lucie Lemoine. 
Madame Baron Veillard. 
Miss Bateman. 
Mrs. A. Jackman. 
Othello. 
Prince of Wales. 
Rubella. 
Star of India. 
Stella. 
Venus Victrix. 
William Kennett.

CLERODENDRON.

CLERODENDRON TRICHOTOMUM.—­Japan, 1800.  This is at once one of the most beautiful and distinct of hardy shrubs.  It is of stout, nearly erect growth, 8 feet high, and nearly as much through, with large, dark-green, ovate leaves, and deliciously fragrant white flowers, with a purplish calyx, and which are at their best in September.  Thriving well in any light soil, being of vigorous constitution, and extremely handsome of flower, are qualities which combine to render this shrub one of particular importance in our gardens.

C. FOETIDUM, a native of China, is only hardy in southern and seaside situations, where it forms a bush 5 feet high, with heart-shaped leaves, and large clusters of rosy-pink flowers.

CLETHRA.

CLETHRA ACUMINATA.—­Pointed-leaved Pepper Tree.  Carolina, 1806.  This is not so hardy as C. alnifolia, hailing from the Southern States of North America, but with a little protection is able to do battle with our average English winter.  It resembles C. alnifolia, except in the leaves, which are sharp pointed, and like that species delights to grow in damp positions.  The flowers are white and drooping, and the growth more robust than is that of C. alnifolia generally.  For planting by the pond or lake-side, the Pepper Trees are almost invaluable.

C. ALNIFOLIA.—­Alder-leaved Pepper Tree.  North America, 1831.  A rather stiff-growing shrub of about 5 feet in height, with leaves resembling those of our common Alder, and bearing towards the end of July spikes of almost oppressively fragrant dull-white flowers at the tips of the branches.  It is a valuable shrub, not only in an ornamental way, but on account of it thriving in damp, swampy ground, where few others could exist, while at the same time it will succeed and flower freely in almost any good garden soil.