What is "diheteropogon"

Diheteropogon is a genus of African plants in the grass family.

1. Diheteropogon amplectens (Nees) Clayton - from Mauritania to Tanzania + KwaZulu-Natal; also Madagascar
2. Diheteropogon filifolius (Nees) Clayton - from Nigeria to Tanzania + KwaZulu-Natal
3. Diheteropogon hagerupii Hitchc. - from Mauritania to Chad + Cameroon
4. Diheteropogon microterus Clayton - Zambia