This member of the Pedaliaceae family was given this name by Heinrich Gustav Adolf Engler in 1897. It is found in Ethiopia, Kenya, Somalia and Sudan, growing in a well drained soil with some water and some to lots of sun. The bright yellow to orange flowers sometimes have a red or purple centre. The caudex can grow to ten centimetres in diameter while the annual stems reach 30 centimetres in height.
The genera name from Latin ptero; 'winged' and Latin discus; 'disc'. The species name after Prince Eugenio Ruspoli, 1866-1893, an Italian nobleman, explorer and plant collector.

