Madagascar palm (Pachypodium baronii), also known as bontaka, is a flowering plant in the Dogbane family Apocynaceae (which has been recently merged with Milkweed family Asclepiadaceae). It has the habit of a robust shrub with a spherical or bottle-shaped trunk. It has several cylindrical branches at the top. This plant is endemic to Madagascar, where it grows in open deciduous forest on Mesozoic calcareous rock and granite or gneiss on the western side of the island at low elevations. It is known in Madagascar as "Bontaka". It is also endemic from Befandriana Nord to Mandritsara.