1. Buddleja L. (butterfly bush)
About 100
species, North America to South America, Caribbean Islands, Asia, Africa,
Madagascar, Pacific Islands.
Several species
of Buddleja are cultivated as ornamentals and as a long-blooming nectar
source for insects, particularly butterflies. Of these, only B. davidii
has been recorded as an escape in Missouri, but two other species are present
outside of cultivation with increasing frequency in the southeastern United
States (G. K. Rogers, 1986). Buddleja madagascariensis Lam. (native to
Madagascar) tends to have a climbing habit and is also characterized by tan
pubescence and yellow to yellowish orange corollas. Buddleja lindleyana
Fortune (native to China) differs from B. davidii in its curved,
externally hairy and/or glandular corolla tubes, generally more glandular
pubescence, somewhat less branched and often more or less 1-sided
inflorescences, and less sharply toothed leaf margins.