Hyperacanthus is a flowering plant genus in the family Rubiaceae, occurring on Madagascar and nearby southern Africa, approximately from Mozambique to the southernmost parts of the continent.
This genus used to contain only 5 species, but the number has tripled since a number of plants formerly believed to be genip-trees â the "Genipa sensu Drake" group â were recognized to be not as closely related to genips as was previously believed. Those species are now placed in Hyperacanthus, at least provisionally:
- Hyperacanthus ambovombensis <small>Rakotonas. & A.P.Davis</small>
- Hyperacanthus amoenus <small>(Sims) Bridson</small>
- Hyperacanthus exosolenius (formerly in Genipa, tentatively placed here)
- Hyperacanthus grevei <small>Rakotonas. & A.P.Davis</small>
- Hyperacanthus lantzianus (formerly in Genipa, tentatively placed here)
- Hyperacanthus lastellianus (formerly in Genipa, tentatively placed here)
- Hyperacanthus madagascariensis <small>(Lam.) Rakotonas. & A.P.Davis</small> (formerly in Genipa)
- Hyperacanthus mandenensis <small>Rakotonas. & A.P.Davis</small>
- Hyperacanthus microphyllus <small>(K.Schum.) Bridson</small>
- Hyperacanthus perrieri <small>(Drake) Rakotonas. & A.P.Davis</small> (formerly in Genipa)
- Hyperacanthus pervillei <small>(Drake) Rakotonas. & A.P.Davis</small> (formerly in Genipa)
- Hyperacanthus poivrei <small>(Drake) Rakotonas. & A.P.Davis</small> (formerly in Genipa)
- Hyperacanthus ravinensis <small>(Baill. ex Drake) Rakotonas. & A.P.Davis</small> (formerly in Genipa)
- Hyperacanthus talangninia <small>(DC.) Rakotonas. & A.P.Davis</small> (formerly in Genipa)
- Hyperacanthus tubulosus (formerly in Genipa, tentatively placed here)
References