This Global ecoregion is made up of these terrestrial ecoregions: Madagascar subhumid forests, Madagascar ecroid thickets, and Madagascar lowland forests.
The Madagascar Subhumid Forests are scattered in several "islands" of montane humid forest throughout the central highlands of Madagascar. The lowland forests of Madagascar include a narrow strip of humid forests along the east coast, low elevation forests.
The Madagascar ericoid thickets are 4 large mountainous formations, called massifs that rise in scattered points from the island of Madagascar. The name of the ecoregion is based on its principal species of vegetation - thicket-forming plants of the Ericaceae (blueberry) family.