Aiphanes acaulis is a spiny palm endemic to western Colombia. it is acaulescent, as the specific epithet "acaulis" implies, – that is, the stem is short to the extent that it is difficult to see at all, and mostly subterranean. Plants have 8 to 10 leaves which are up to 1.5 metres (5 feet) long. The flowers are purple and are borne on an erect inflorescence.Aiphanes acaulis is known from two small populations in the Chocó Department in western Colombia.