President Grevy is one of the same beautiful group.  The blooms are large, double, and produced in very massive clusters, and of a light bluish-lilac tint, when forced almost white.  The first of this group, S. vulgaris Lemoinei, was sent out about 1884, and was then awarded a certificate by the R.H.S.  The range in colouring of these Lilacs is rather confined, so that the various forms resemble one another in no small degree, particularly when the flowers are opened under glass.  From the large size of the flower bunches, and the individual flowers being double, they are all of great beauty, and being quite hardy still further enhances their value for outdoor gardening purposes.

The Lilacs grow freely in any soil of fair quality, but a free, rich, and not too dry loam, would seem to suit the majority of these plants best.

TAMARIX.

TAMARIX GALLICA.—­Common Tamarisk.  India to Europe.  This shrub often in favoured maritime places reaches to a height of fully 10 feet, with long and slender branches, and spikes of pretty, rosy-pink flowers produced at the end of summer.  For sea-side planting, it is an invaluable shrub, and on account of its feathery appearance and wealth of showy flowers is well worthy of being included in our list of ornamental and useful shrubs.

T. PARVIFLORA (syns T. africana and T. tetrandra), South-eastern Europe and Levant, is a nearly allied species, with white, pinky-tinged flowers.

TECOMA.

TECOMA GRANDIFLORA (syn Bignonia grandiflora), from China and Japan (1800), is not so hardy as T. radicans, although in certain maritime districts it succeeds fairly well.  The flowers are very attractive, being of a rich orange-scarlet, and produced in drooping clusters.  Both foliage and flowers are larger than those of T. radicans.  It wants a warm, sunny wall, and light, rich, and well-drained soil, and if only for its lovely flowers, it is well worthy of coddling and good treatment.

T. RADICANS (syn Bignonia radicans).—­Trumpet Flower.  North America, 1640.  An old occupant of our gardens and one of the most beautiful wall plants in cultivation.  It is a tall climber, of sometimes fully 20 feet in height, with graceful pinnate leaves, and handsome trumpet-shaped scarlet-red flowers, that are at their best about mid-summer, though the period of flowering extends over a considerable length of time.  The stems are long, twisted, and wiry, and like those of the Ivy send out roots at the joints and so fasten the plant in position.  Few climbing plants are more attractive than the Trumpet Flower, and being hardy in most parts of the country, and free of growth, is to be recommended for covering walls, and arches, or similar structures.  T. radicans major is of more robust growth than the species, with larger foliage and paler flowers.  The orange-scarlet flowers are produced in terminal corymbs.