Greek rhodon — rose, chiton — cloak, referring to the large calyx.

Twining vines. Leaves alternate, cordate, margin with a few small teeth, the petioles twining. Flowers solitary in the leaf axils, pendulous. Calyx shallowly bell-shaped, pinkish to purple. Corolla narrow and elongated, expanding at the mouth. Stamens 4, partly protruding. Fruit an elongate to spherical capsule.

Grown as an elegant warm-climate climber with unusual flowers.

Seed.

Tubular, blackish purple corolla with reddish, bell-shaped calyx; petioles sensitive.

3 species from Mexico and central America.

Sutton (1988).

Source: Spencer, R. (2002). Scrophulariaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.