See text Cryptostegia is a genus of flowering plants native to tropical Africa and Madagascar.

Cryptostegia includes three species of slender, many-stemmed, woody, perennial vines.

When their stems or leaves are damaged they exude a milky latex that is extremely toxic to livestock; it contains cardiac glycosides that cause sudden death, especially after violent exertion.

Clusters of large, showy, funnel-shaped flowers with 5 white to rose-pink or reddish-purple petals bloom in summer after the wet season.

It is regarded as one of the worst weeds in Australia because of its invasiveness, potential for spread, and economic and environmental impacts.