What is "black cardamom"

n. The Asiatic plant, ''Amomum subulatum'', whose pods are used as a spice in Indian cuisine.

Black cardamom, also known as hill cardamom, Bengal cardamom, greater cardamom, Indian cardamom, Nepal cardamom, winged cardamom, or brown cardamom, comes from either of two species in the family Zingiberaceae. Its seed pods have a strong camphor-like flavor, with a smoky character derived from the method of drying.