Synonyms: Cenchrus thunbergii (homotypic); Gymnotrix purpurascens (heterotypic); Panicum geniculatum (heterotypic); Pennisetum adoense (heterotypic); Pennisetum depauperatum; Pennisetum geniculatum (heterotypic); Pennisetum glabrum; Pennisetum glabrum var. filiforme; Pennisetum leekei; Pennisetum leekei var. leucostachys; Pennisetum paucisetum; Pennisetum schimperi var. glabrum; Pennisetum schimperi var. pubiflorum; Pennisetum snowdenii; Pennisetum thunbergii (homotypic); Pennisetum thunbergii var. galpinii