Pentanisia is a genus of flowering plants in the family Rubiaceae.
The genus contains about 19 species.
Pentanisia angustifolia (Hochst.) Hochst.
Pentanisia annua K.Schum.
Pentanisia arenaria (Hiern) Verdc.
Pentanisia calcicola Verdc.
Pentanisia confertifolia (Baker) Verdc.
Pentanisia foetida Verdc.
Pentanisia gossweileri (Verdc.) Kårehed & B.Bremer
Pentanisia longipedunculata Verdc.
Pentanisia longituba (Franch.) Oliv.
Pentanisia microphylla (Franch.) Chiov.
Pentanisia monticola (K.Krause) Verdc ...