Ceanothus.—California and Mexico. Many species and varieties are grown both as bushes, in which form they soon make small trees, and trained against walls. Of the early-flowering varieties C. veitchianus is the brightest coloured, and of the autumn-blooming, azureus section, Gloire de Versailles is the favourite. Common in most gardens.
Citharexylom quadrangulare.—West Indies. The Fiddle-wood. Bears white, fragrant flowers. There is a fine specimen at Abbotsbury. Dorset.
Citrus trifoliata (Œgle sepiaria).—Japan. This fiercely-spined Citrus is hardy, but rarely flowers and fruits in the north. In the south-west it flowers freely, and one specimen fruits almost annually. It is 7 feet in height, and last year carried over thirty fruits.
Clerodendron trichotomum.—Japan. A deciduous shrub, also hardy, but flowering best in the south-west. A fine specimen over 15 feet in height and as much through is at Greenway on the Dart.
Clethra arborea.—Madeira. The Lily-of-the-Valley tree. Evergreen. It bears panicles of white, bell-shaped flowers in the summer, at which time it is quite a feature at Tresco. There are good bushes, the largest about 7 feet in height, at Trewidden, near Penzance.
Corokia buddleioides.—New Zealand. A tall-growing evergreen shrub, with leaves 2 to 6 inches in length. C. Cotoneaster is a spreading shrub with small leaves. Both species bear yellow, sweet-scented flowers. The first was at Ludgvan Rectory, Cornwall, the second at Bishop's Teignton. South Devon.
Correa.—Australia. Greenhouse evergreen shrubs which do well at Tresco, and also in some gardens on the mainland. C. cardinalis is the most brilliant, but C. ventricosa is almost as highly coloured. The two named, as well as C. alba, C. bicolor, C. carnea, C. glauca, C. magnifica, and C. virens are sometimes seen in good health and flower on the mainland.
Corynocarpus lævigatus.—New Zealand. An evergreen tree, bearing panicles of white flowers followed by plum-like fruit. A healthy young plant is at Ludgvan Rectory.
Crinodendron Hookeri (Tricuspidaria hexapetala).—Chili. A particularly handsome shrub, growing to a height of 5 feet, bearing large, drooping, cherry-red, urn-shaped flowers on long peduncles, the petals being very fine in texture. In many gardens.
Cytisus racemosus.—Peak of Teneriffe. One of the commonest and most popular greenhouse plants. It grows to 8 or 10 feet in height in the south-west and often flowers until Christmas.