CEDRELA.

CEDRELA SINENSIS (syn Ailanthus flavescens).—­China, 1875.  This is a fast growing tree, closely resembling the Ailanthus, and evidently quite as hardy.  It has a great advantage over that tree, in that the flowers have an agreeable odour, those of the Ailanthus being somewhat sickly and unpleasant.  The flowers are individually small, but arranged in immense hanging bunches like those of Koelreuteria paniculata, and being pleasantly scented are rendered still the more valuable.  The whole plant has a yellow hue, and the roots have a peculiar reddish colour, and very unlike those of the Ailanthus, which are white.

CELASTRUS.

CELASTRUS SCANDENS.—­Climbing Waxwork, or Bitter Sweet.  North America, 1736.  When planted in rich, moist soil, this soon forms an attractive mass of twisting and twining growths, with distinct glossy foliage in summer and brilliant scarlet fruit in autumn.  The flowers are inconspicuous, the chief beauty of the shrub being the show of fruit, which resembles somewhat those of the Spindle Tree (Euonymus), and to which it is nearly allied.  A native of North America, it grows from 12 feet to 15 feet high, and is useful in this country for covering arches or tree stems, or for allowing to run about at will on a mound of earth or on rockwork.

CELTIS.

CELTIS AUSTRALIS.—­South Europe, 1796.  This species is much like C. occidentalis, with black edible fruit.  It is not of so tall growth as the American species.

C. OCCIDENTALIS.—­Nettle tree.  North America, 1656.  In general appearance this tree resembles the Elm, to which family it belongs.  It has reticulated, cordate-ovate, serrated leaves, with small greenish flowers on slender stalks, and succeeded by blackish-purple fruit about the size of a pea.  A not very ornamental tree, at least so far as flowers are concerned, but valuable for lawn planting.  It varies very much in the size and shape of the leaves.

CERCIS.

CERCIS CANADENSIS.—­North America, 1730.  This species resembles C. Siliquastrum, but is of much smaller growth, and bears paler flowers; while C. CHINENSIS, which is not hardy, has large, rosy-pink flowers.

C. SILIQUASTRUM.—­Judas Tree.  South Europe, 1596.  A small-growing tree of some 15 feet in height, and with usually a rather ungainly and crooked mode of growth.  It is, however, one of our choicest subjects for ornamental planting, the handsome reniform leaves and rosy-purple flowers produced along the branches and before the leaves appear rendering it a great favourite with planters.  There are three distinct forms of this shrub—­the first, C. Siliquastrum alba, having pure white flowers; C. Siliquastrum carnea, with beautiful deep pink flowers; and C. Siliquastrum variegata, with neatly variegated foliage, though rather inconstant of character.  Natives of South Europe, and amongst the oldest trees of our gardens.