Twining perennial herb. Leaves ovate to lanceolate, 5-10 cm long, 3-7 cm wide, tip pointed, base slightly arrowhead-shaped. Flowers solitary. Corolla white or slightly pink, 4-6 cm long; summer. Fruit capsule 7-8 mm long.

Temperate Europe, N America, New Zealand, much of Australia

A widespread urban environmental weed.

 

C. soldanella (L.) Roem. & Schultes is a cosmopolitan maritime weed.

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