This genus has been separated from Bignonia, and now includes T. radicans and T. grandiflora.
Tecoma radicans has been described under the head of Big-nonia.
Tecoma grandiflora has flowered with us, but it is ratherten-der in this climate. It is a native of China and Japan. "In the growth of the wood it is rather more slender, and the leaves more coarsely serrated than those of B. radicans. The vine has the same habit of attaching itself firmly to a wall, or building of stone, brick, or wood, or to the trunk of a tree within its reach, by the numerous small air-rootlets which it sends out from the inner sides of its shoots.
"In the blossoms of the Tecorna grandijlora, however, lies its peculiar beauty. These are produced, in great profusion of clusters, in July and August, so as to give the whole plant an exceedingly gay and lively appearance. They are not long and tubular, like those of the common Trumpet Flower, but somewhat cup-shaped. * * * The color is beautifully varied, the outside being a rich pure orange-scarlet, marked with brighter streaks. These gay clusters open their blossoms in succession, so as to keep up a brilliant appearance for a long time; and we are acquainted with no climbing shrub, except the Chinese Wistaria, which at all vies in elegance or brilliancy -of effect, in the garden or pleasure-ground, with this during the season of bloom. Last season, we counted over three hundred inbloom, at once, upon a plant in our neighborhood; and the same profuse display continued a fortnight or more.
"The Tecorna grandiflora may be grown with perfect ease where the old Trumpet Flower (T. radicans) thrives. North of this (Newburg, N. Y.) it will, perhaps, require a little protection in winter, such as a layer of straw tied over the larger shoots, or some branches of evergreens laid against them at the approach of winter. A northern site will also be found the better one at the north, wherever there is a doubt of its hardiness, since the temperature will, in such a site, be more uniform and less injurious than in a southern aspect. Wherever the Isabella grape ripens, this handsome climbing shrub will be easily cultivated in almost any situation. If there are any fears of its hardiness, it may be protected, as we have pointed out, for a couple of years, till the wood gets strong and wellhardened. Any dry, light, well-drained soil, suits this climber. It should be made moderately rich, and in such soil, when planted against a wall, it will cover a space twelve or fourteen feet square, in two or three seasons. It is well worthy the attention of those who are looking for climbers of a permanent kind, to cover unsightly walks, or close fences, or to render garden buildings of any kind more ornamental, by a rich canopy of foliage and bloom." - (Downing.)