What is "hyperthelia"

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

1. Hyperthelia colobantha Clayton - Central African Rep
2. Hyperthelia cornucopiae (Hack.) Clayton - Central African Rep, Chad, South Sudan
3. Hyperthelia dissoluta (Nees ex Steud.) Clayton - most of sub-Saharan Africa incl Madagascar; naturalized in Latin America
4. Hyperthelia edulis (C.E.Hubb.) Clayton - South Sudan
5. Hyperthelia kottoensis Desc. & Mazade - Central African Rep
6. Hyperthelia polychaeta Clayton - Central African Rep