IndigoEncyclopaedia Iranica (2004)
INDIGO (Pers. nil), the common name of a broad genus, Indigofera, with numerous species, widely distributed throughout Asia, Africa, and the Americas. A member of the leguminous pea family, indigo is variously classified as an herb or small shrub; its stalks are long, bearing raceme flowers. It is usually perennial, but in some areas annual. Native species are known from Arabia, including the Yemen, and around the Indian Ocean.
- natural dye
Citation InformationCarol Bier. "Indigo" Encyclopaedia Iranica (2004)
Available at: http://works.bepress.com/carol_bier/76/