Nutmeg originally came from the archipelago (Moluques) in the Islands of Banda. It was introduced to the islands of Celebes, Java, Sumatra and Malaysia, to the Isle of Penang, into Bengal, the West Indies, Brazil ... Pierre Poivre planted it in the Isle of Maurice and Reunion Island.
The nut is at the centre of a fruit as big as an apricot, and its yellow or red envelope is called Mace. Grated nutmeg and mace are used in a similar way. Mace is less aromatic but subtler in flavour.