This member of the Commelinaceae family was given this name by Charles Baron Clarke in 1881. It is found in Benin, Burkina, Burundi, Central African Republic, Chad, Ghana, Guinea, Ivory Coast, Mali, Nigeria, Senegal, Sierra Leone and Togo, growing in a well drained soil with some water and some sun. The caudex can grow from two to five centimetres in diameter, the entire plant to eight centimetres in height. The flowers are blue or purple. It seems like Kuntze's idea with Tonningia didn't catch.
The genera name from Latin; cyaneus; 'blue'. The species name means 'narrow' for the leaves.

