Commicarpus

Commicarpus is a genus of flowering plants belonging to the family Nyctaginaceae. The genus contain some 30 to 35 species which are native to the tropics and subtropics. Most are found in Africa and western Asia, and eight species are native to southern Africa.
Species of the genus are distinguished from one another by details of the anthocarp and the shape and indumentum of the flower's lower coriaceous (or leathery) part. They grow in soil that is rich in calcium, and especially soil with a strong component of heavy metals.
Species.
The genus includes the following species:
Govaerts, Rottbøll and Greuter & Burdet have published several combinations in the genus "Boerhavia". If these are followed the genus "Commicarpus" would be much smaller.