Ichnanthus pallens (Sw.) Benth.
Ichnanthus pallens var. majus Nees
Ichnanthus vicinus var. (F.M. Bail.) Merrill – synonym of Ichnanthus pallens var. majus Nees
Imperata arundinacea africa Anderss. – synonym of Imperata cylindrica (Linn.) P.Beauv.
Imperata cylindrica (Linn.) P.Beauv.
Imperata cylindrica africana (Anderss.) C.E.Hubb. – synonym of Imperata cylindrica (Linn.) P.Beauv.
Isachne albens buettneri (Hack.) Veldkamp
Isachne albens hispidula (Trin.) Veldkamp
Isachne buettneri Hack. – basionym of Isachne albens buettneri (Hack.) Veldkamp
Isachne caillei A. Chev. – synonym of Isachne kiyalensis Robyns
Isachne guineensis Stapf & C.E. Hubbard
Isachne nervata Franch. – basionym of Trichanthecium nervatum (Franch.) Zuloaga & Morrone
Isachne scandens Stapf – synonym of Isachne albens buettneri (Hack.) Veldkamp
Isachne trochainii A. Camus – synonym of Trichanthecium tenellum (Lam.) Zuloaga & Morrone
Ischaemum afrum (J.F. Gmel.) Dandy
Ischaemum amethystinum J.P.Lebrun
Ischaemum brachyatherum (Hochst.) Hack. – synonym of Ischaemum afrum (J.F. Gmel.) Dandy
Ischaemum cuspidatum Roxb. – basionym of Vossia cuspidata (Roxb.) Griff.
Ischaemum fasciculatum Brongn. – synonym of Ischaemum polystachyum J. Presl
Ischaemum glabrescens Ham. ex Hook.f. – synonym of Echinochloa crus-galli (Linn.) P. Beauv.
Ischaemum hirsutum Nees ex Steud. – synonym of Lasiurus scindicus Henrard
Ischaemum hirsutum Peter – invalid name of Ischaemum amethystinum J.P.Lebrun
Ischaemum imbricatum (Munro ex Hack.) Stapf ex Ridley. – synonym of Ischaemum barbatum Retz.
Ischaemum indicum (Houtt.) Merr. – synonym of Polytrias indica (Houtt.) Veldkamp
Ischaemum indicum auct. FWRA (1972) – synonym of Ischaemum ciliare Retz.
Ischaemum polystachyum J. Presl
Ischaemum secundatum Walt. – basionym of Stenotaphrum secundatum (Walt.) Kuntze
Ischaemum stipitatum Chiov. – synonym of Ischaemum polystachyum J. Presl
Ischaemum tallanum Rendle – synonym of Ischaemum polystachyum J. Presl