Anisotes is a genus of Afrotropical plants in the family Acanthaceae. The genus is morphologically similar to Metarungia, from which it differs mainly in the dehiscence of the fruit capsule, and the nature of the placenta. Placentas (with attached retinacula) remain attached to the inner surface of fruit capsules in Anisotes.
They favour sandy ground or tropical to subtropical dry forest. The corolla consists of a two-lipped flower that is orange to red in colour. Four seeds are produced in a woody fruit capsule. Two of the six Madagascar species, A. hygroscopicus and A. venosus, are unique in the genus in having hygroscopic trichomes on their seeds.
Species , Plants of the World Online accepted the following species:
Anisotes bracteatus Milne-Redh. – southern Africa Anisotes comorensis (Lindau) T.F.Daniel Anisotes divaricatus T.F.Daniel, Mbola, Almeda & Phillipson – southwestern Madagascar Anisotes diversifolius Balf.f. Anisotes dumosus Milne-Redh. Anisotes galanae (Baden) Vollesen Anisotes guineensis Lindau Anisotes hygroscopicus T.F.Daniel – Madagascar Anisotes involucratus Fiori Anisotes longistrobus (C.B.Clarke) Vollesen Anisotes macrophyllus (Lindau) Heine Anisotes madagascariensis Benoist – southwestern Madagascar Anisotes mayottensis T.F.Daniel Anisotes nyassae Baden Anisotes parvifolius Oliv. Anisotes pubinervius (T.Anderson) Heine Anisotes pulchellus (Benoist) T.F.Daniel, Letsara & Rakotonas. Anisotes rogersii S.Moore – southern Africa Anisotes sessiliflorus (T.Anderson) C.B.Clarke Anisotes spectabilis (Mildbr.) Vollesen Anisotes subcoriaceus T.F.Daniel – Madagascar Anisotes tablensis T.F.Daniel Anisotes tanensis Baden Anisotes tangensis Baden Anisotes trisulcus (Forssk.) Nees Anisotes ukambensis Lindau Anisotes umbrosus Milne-Redh. Anisotes venosus T.F.Daniel – Madagascar Anisotes zenkeri (Lindau) C.B.Clarke
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