Strophanthus hispidus

About

Strophanthus hispidus, the hispid strophanthus, is a liana or shrub that can grow up to 5 metres (16 ft) tall. Its flowers feature a yellow corolla and yellow corona lobes spotted with red, purple or brown. The seeds, like those of several other Strophanthus species, contain potent cardiac glycosides absorbable through wounds - hence its use in African arrow poisons and later in modern medicine as a digitalis-like heart stimulant. Strophanthus hispidus is native from west tropical Africa east to Tanzania and south to Angola. It is naturalized in China.

Summary from Wikipedia