Greek klytos — glorious, stoma — mouth, referring to the trumpet flowers.

Evergreen climbing shrubs. Leaves opposite, simple with 3 leaflets, or 2 leaflets and a terminal simple tendril. Flowers in axillary or terminal pairs, or in clusters. Calyx 5-toothed. Petals tubular, 2-lipped. Stamens 4. Fruit a broad, prickly capsule.

Evergreen climbers, grown only as C. callistegioides, for the attractive pale and finely veined trumpet flowers.

Cuttings.

Evergreen climbers generally with leaves of 3 leaflets, the terminal one sometimes modified as an unbranched tendril.

9 species, all vines from tropical S America.

Source: Spencer, R. (2002). Bignoniaceae. 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.