-Plants (Kingdom Plantae)

-Vascular Plants (Phylum Tracheophyta)

-Flowering Plants (Subphylum Angiospermae)

-Dicots (Class Magnoliopsida)

-Legumes, Milkworts, and Allies (Order Fabales)

-Legumes (Family Fabaceae)

-Subfamily Faboideae

-Tribe Indigofereae

-Indigos (Genus Indigofera)

-Hairy Indigo (Indigofera spicata)

Indigofera is a large genus of plants that belongs to the huge plant family Fabaceae (Legumes). Certain species (Indigofera tinctoria and Indigofera suffruticosa) are used by tropical farmers to produce the dark blue dye called indigo. Indigofera plants are pink/white flowered perennials and subshrubs that range from dwarfs to small trees.