 Flowers are perfect (having both male and female parts), hence are hermaphrodite rather than monoecious (separate male and female flowers on the same plant) as is often incorrectly stated.Ploidy 2"n" = 76 (tetraploid).In his 1979 revision of the taxonomy of the African and Asiatic species of "Buddleja", the Dutch botanist Anthonius Leeuwenberg sank the six varieties of the species as synonyms of the type, considering them to be within the natural variation of a species, and unworthy of varietal recognition.