Indigofera
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Indigofera is a large genus of over 750 species of flowering plants belonging to the pea family Fabaceae. They are widely distributed throughout the tropical and subtropical regions of the world.
Indigofera tinctoria 1
Indigo dye
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Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye obtained from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria. Dye-bearin
Indigofera
…including the turnip moth (Agrotis segetum). Several species, especially Indigofera tinctoria and Indigofera suffruticosa, are used to produce the dye indigo. Scraps of Indigo-dyed fabric likely dyed with plants from the genus Indigofera discovered at Huaca Prieta predate Egyptian indigo-dyed fabrics by more…
Cake of indigo, c. 2 centimetres (1 in)
Indigo, historical dye collection of the Technical University of Dresden, Germany
Piece of indigo plant dye from India, c. 2+1⁄2 centimetres (1 in) square.
![Indigo factory at Allahabad, India, drawn by Émile Thérond [fr], 19th century](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Ridpath%27s_history_of_the_world%3B_being_an_account_of_the_ethnic_origin%2C_primitive_estate%2C_early_migrations%2C_social_conditions_and_present_promise_of_the_principal_families_of_men_%281897%29_%2814597001160%29.jpg/500px-Ridpath%27s_history_of_the_world%3B_being_an_account_of_the_ethnic_origin%2C_primitive_estate%2C_early_migrations%2C_social_conditions_and_present_promise_of_the_principal_families_of_men_%281897%29_%2814597001160%29.jpg)
Indigo factory at Allahabad, India, drawn by Émile Thérond [fr], 19th century