Drosera madagascariensis forms one or two slightly pubescent inflorescences which are 20-40 cm (8-16 in) tall and bear 4-12 flowers on 2-5 mm long peduncles. The sepals are ovate and slightly pubescent. The pink petals are obovate, 6-12 mm (0.25-0.5 in) long and 4-6 mm wide. The seed capsules are dehiscent and bear numerous seeds up to 0.6 mm long.Drosera madagascariensis is native to the tropical Africa (Guinea, Nigeria, Cameroon, Congo, Angola, Zambesi, Tanganyika) as far south as South Africa and east to the island of Madagascar. It is found in swamps and sphagnum bogs.