Carissa tetrameraCarissa tetramera, the sand num-num, is a plant in the dogbane family Apocynaceae. The specific epithet tetramera means 'four parts', referring to the flower.DescriptionCarissa tetramera grows as a shrub up to tall. Its strong-scented flowers feature a white corolla, often tinged pink. The fruit is red to purple-black when ripe.Distribution and habitatCarissa tetramera is native to Kenya, Tanzania, Zimbabwe, Mozambique, Eswatini and South Africa. Its habitat is dry open woodland.