Smicrostigma viride

This species is typical for the Little Karoo and has some peculiar characteristics: the leaves are fused at their base, forming a long sheath, so that the plant looks like a stem succulent, and the flowers  do not close again once they are open.
Actually, the plants are so different from others that the genus is monotypic.  In other words: there is only one species of Smicrostigma.
Photographed October 17, 2011.