Synonyms: Cenchrus rogeri; Chasea violacea (homotypic); Panicum violaceum (heterotypic); Penicillaria fallax; Penicillaria raddiana; Pennisetum americanum monodii; Pennisetum chudeaui; Pennisetum chudeaui monodianum (homotypic); Pennisetum chudeaui monodii; Pennisetum cognatum; Pennisetum darfuricum; Pennisetum elegans (heterotypic); Pennisetum fallax; Pennisetum glaucum violaceum; Pennisetum molle; Pennisetum mollissimum; Pennisetum ochrops; Pennisetum ramosissimum; Pennisetum rogeri; Pennisetum senegalense (homotypic); Pennisetum spicatum var. fallax; Pennisetum subeglume; Pennisetum versicolor; Pennisetum violaceum (homotypic); Pennisetum violaceum var. chudeaui; Pennisetum violaceum var. major; Pennisetum violaceum var. majus; Pennisetum violaceum var. monodianum