Eremolaena rotundifolia, known by the vernacular names Amaninombilahy fotsy, Anjananjana, Fotona, Fotonala, Fotonalahy, Menahy lahy, Takodizahana lahy and Voantalanina, is native to littoral (seaside) forests on sand at Masoala National Park and in the Fort Dauphin area, in the Madagascar lowland forests ecoregion.
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Eremolaena humblotiana, know by the vernacular names Amaninombilahy, Hamaninaombilahy and Fotona, is found in the humid Madagascar lowland forests and Madagascar subhumid forests ecoregions, up to 1200–1500 meters elevation, from the Brickaville to Vatomandry area, Betampona Reserve, Zahamena Reserve, and the area around Lac Alaotra.