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|Noun||1.||indigo plant - deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye|
genus Indigofera, Indigofera - genus of tropical herbs and shrubs having odd-pinnate leaves and spurred flowers in long racemes or spikes
Indigofera anil, Indigofera suffruticosa, anil - shrub of West Indies and South America that is a source of indigo dye