buddleja

or butterfly bush

Any of more than 100 species of plants constituting the genus Buddleja, native to tropical and subtropical areas of the world. The genus was formerly included in the family Loganiaceae (order Gentianales) but is now placed in the figwort family (Scrophulariaceae; order Lamiales), which includes about 190 genera and more than 4,000 species. Most species of Buddleja have hairy or scaly leaves and clusters of purple, white, yellow, or orange flowers. Several species are cultivated as garden ornamentals.

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