Endemic to Montagne d’Ambre, which is an isolated massif of evergreen montane forest within a seasonal dry environment, ca. 100 Km apart from analogous vegetation, at an elevation of ca. 1000 m. Known from 4 collections only.
Differs from D. perrieri in being smaller in many aspects (leaves 2-5 cm; petioles 2 mm; pedicels 4 mm, ripe fruits 25 x 20 mm). In my opinion clearly related with D. perrieri but too extreme to fall in its variation range. NB: D. perrieri also exists on Montagne d’Ambre, at slightly lower altitude (770 m).