It has slender, twining stems set every few inches with flat, heart-shaped leaves up to 4in long. The flowers are reminiscent of those of the Lagerstroemia in form, each petal expanding abruptly from a narrow basal claw. They measure a little over 1in across and are brilliant yellow in color. It thrives in sun or light shade and well drained soil, with moderate watering.
Species and varieties: