It is a perennial herb with fleshy, succulent, glabrous, trailing or pendulous stems, flowering from August to September. Leaves are opposite, oblong, obtuse or subacute, fleshy, sub-sessile. Flowers are axillary, solitary or in pairs. The corolla is purple with a pale yellow, with irregularly shaped spots in the centre of each lobe.The corona is purple, anthers are red and the seeds comose.