This is the flower of my own. Really bright yellow!

This member of the Pedaliaceae family was described by Heinrich Gustav Adolf Engler in 1894. It's found in Tanzania and Mozambique, and the flowers are bright yellow to orange. The few short, swollen stems gets annual shoots to 20 centimetres. The caudex can grow to five centimetres or more.

In the wild, the growing area might be swamped for part of the year.