This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
T. radicans (fig. 193), syn. Bigndnia radicans. - Trumpet Flower. A tall climber with opposite pinnate leaves, supporting itself by means of rootlets from the joints. Flowers orange and scarlet, produced in Summer. North America from Pennsylvania southwards. This is the species commonly seen in gardens. T. grandiflora is from North-eastern Asia, and resembles the last, but the tube of the corolla is shorter and the throat more open.
Fig. 193. Tecoma radicans. (1/4 nat. size.)