It's dioecious. These are male flowers.

The fruits before they turn red.

This nice Cucurbitaceae was first given this name by Célestin Alfred Congiaux in 1881. It is from southern Africa, where it preferring a well-drained soil, moderate water and moderate sun. The caudex can grow to 20 cm in diameter, the vines five meters. It will produce small white flowers, and apart from seeds, it can be reproduced by cuttings.

The genera name from Latin coccineus, meaning 'red' or 'scarlet' which must referee to the fruits. The specific name indicate the leaves are sessile, or stalk-less - or at least sit close to the stems. In this case, they sit right on it.

Leaf on a wild plant in Namibia.

And a male flower in South Africa.