Areca vestiaria (pinang yaki or pinang merah) is a species of palm native to the rainforests of eastern Indonesia^[1] especially North Sulawesi.^[2] Its morphology is more diverse than other species of palms, and in particular the color of its upper trunk / crownshaft changes depending on altitude (varying between red and orange).^[1]

The people of Sulawesi, near Bogani Nani Wartabone National Park, have long used the fruit of this palm as a male contraceptive.^[3] They drink a decoction of the fruit flesh boiled in water.^[3] The chemical composition of the fruit has been investigated with this in mind,^[3] but this does not represent evidence of its effectiveness as an antifertility agent.