Cyme with 1-4 fasicicles. Corolline corona of 5 entire filaments in throat of tube, each filament 6-8.5 mm long. Translators lanceolate, ca 2.5 mm long and 1 mm wide. Style-head conical, ca 3 mm long and 2 mm diameter. Ovaries ca 3 mm long and 1 mm wide.
Plants occur naturally in riverine and seasonally flooded forests.
The weedy aggressiveness of this species has been favored by the widespread destruction of forests and it may be dominant in many disturbed situations. It is common on hillsides and along gullies in the secondary savannahs which dominate western Madigascar. Candidate species for preventative control. Queensland Department of Natural Resources. Marohasy, J. and P. I. Forster.