Streptocarpus cooksonii is a large unifoliate, monocarpic species leaves (400 x 300 mm) that is apparently surprisingly heat and drought tolerant as far as Streptocarpus are concerned. It grows between rocks and on earth banks in hot open grassland, an unlikely habitat for Streptocarpus, in the centre of KwaZulu Natal Province of South Africa in the vicinity of the towns of Muden and Weenen. It produces many flowers (corollas 28-38 mm long) which can be a rich velvety purple or lighter, with the lower lip showing pure white, a very pleasing contrast.

• A darker bluish-purple form of the species
• A close view of a cluster of flowers
• Many plants with flowers growing on a bank
• Plants with and without flowers growing on a bank