Boronia.—Australia. These are almost universally treated as greenhouse plants, but succeed in the open air in the south-west. At Tregothnan, at the end of March, two bushes of B. megastigma, planted in front of a wall, the larger of which was about 3 feet in height, were coming into profuse bloom, and already scented the air with the first of their brown, yellow-lined, drooping cups. B. heterophylla, with its purple-red flowers was also expanding blooms, and B. Drummondii, B. elatior, and B. polygalæfolia were also growing in the same garden.
Brachyglottis repanda.—New Zealand. A handsome tree, with leaves nearly a foot in length and numerous minute flower-heads. Tresco.
Buddleia Colvillei.—Sikkim. The finest of the new race, with pendulous racemes, nearly a foot in length, of crimson, pentstemon-like flowers, paler round the centre, an inch across. Leaves large and dark green, 6 inches or more in length. Several gardens.
Callistemon Salignus.—Australia. There are two forms of this Bottle-brush, one bearing pale-yellow flowers and the other crimson. Others are C. lanceolatus, carmine-flowered, and C. speciosus, scarlet-flowered. These grow well as bushes, specimens of the first-named being sometimes 10 feet in height and as much in diameter. There is much confusion between this genus and Metrosideros floribunda. Callistemons are to be found in many gardens.
Camellia reticulata.—This is hardy, but rarely flowers satisfactorily in the open except in the south-west, where it is grown both against walls and as a bush plant. It is by far the finest of the Camellias, bearing lovely, pink, semi-double flowers 6 inches in diameter, with bright-yellow, spreading stamens.
Candollea tetrandra.—Australia. An evergreen bush bearing clear-yellow, cup-shaped flowers somewhat resembling Sun Roses, but of finer texture. Tresco.
Cantua buxifolia.—Peru. An evergreen shrub, bearing in corymbs at the end of the branches pale-red trumpet-flowers something after the style of Fuchsia corymbiflora. Tresco.
Carpenteria californica.—A well-known evergreen shrub in the south-west, bearing fragrant, white, yellow-centred flowers. In some gardens it suffers from browning of the leaves, but this is apparently not the effect of cold winds or frost, as often the most exposed plants are the least affected and the most sheltered are in the worst plight. The finest specimen known to Mr. Fitzherbert is about 8 feet high and as much through; it is growing near Teignmouth. It may be considered fairly hardy since it has been grown in the open in Scotland.
Caryopteris Mastacanthus.—Chili. A most valuable, much-branched evergreen shrub growing to a height of 4 feet or more, bearing lavender-blue clusters of flowers in October. There is also a white form. The type is common. This is also happy farther north.
Cassinia leptophylla.—New Zealand. A small evergreen shrub, bearing white flower-heads. Tregothnan.