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a genus of plants of the family Buddleiaceae (formerly assigned to the family Loganiaceae). They consist of shrubs or small trees, sometimes herbs. Blossoms are usually small, numerous, variously colored, and gathered into large inflorescences. There are approximately 100 species distributed in tropical and temperate regions of America, Asia, and South Africa. Some species of Buddleia have been cultivated as ornamentals. David’s buddleia (B. davidii, B. variabilis) is a small tree with fragrant blossoms; it originated in China and has many garden forms. Other species can also be cultivated in gardens of the southern USSR. Buddleia grows rapidly; some plants begin to blossom at two or three years of age.