ànil
Ànil is a term that can refer to several different plants, most notably species within the genus Indigofera, which are the source of the dye indigo. These plants are herbaceous or shrubby and are found in tropical and subtropical regions. The leaves of certain Indigofera species are processed to extract a blue dye known as indigo, which has been used for dyeing textiles for centuries. The cultivation and processing of ànil for indigo production were historically significant industries in various parts of the world, particularly in regions like India and parts of the Americas.
Another plant sometimes referred to as ànil is a species of the family Bignoniaceae, specifically Handroanthus.