Aptosimum procumbens is one of the two Aptosimum species found in the Little Karoo. The genus comprises about 20 species. There is a group of similar looking plants in the genus Peliostomum, but Aptosimum flowers can be distinguished by two sterile anthers, smaller than the two normal ones, hidden inside the flower tube.
Aptosimum leaves turn black in severe drought, causing the plant to appear dead. Shortly after rain it revives. The leaves are spoon-shaped with short stalks. The flowers are pollinated by pollen-collecting wasps. The white throats and dark patches on the corolla can be seen in this photo that was taken in the Karoo Desert National Botanical Garden.
It is possible that a colour variation of a more violet shade also exists from descriptions and photos seen, although all the specimens observed in Worcester and Beaufort West were bright blue (Vlok and Schutte-Vlok, 2010).