Buddleja acuminata is a rare shrub endemic to the northern half of Madagascar and eastern Zaire, where it grows along forest edges and in clearings at elevations of 50 - 800 m. The species was first named and described by Poiret in 1810.[1]
Buddleja acuminata is a sarmentose, often lianescent, shrub 1.5 - 3 m in height, with stellate-tomentose branchlets. The opposite dark green leaves have petioles 0.7 - 2 cm long, the blades variable in shape, from triangular to narrowly ovate, 5 - 11 cm long by 1.5 - 6.5 cm wide, long-acuminate at the apex, subcordate to cuneate at the base, all but glabrous above, stellate - tomentose below; the margins range from coarsely dentate at the base, to entire and covered by a thick felt-like indumentum. The inflorescences are white panicles, initially small and congested < 2 cm in diameter at anthesis, enlarging to 15 cm long by 6 cm, the corollas 9 - 13 mm long.[2]
Buddleja acuminata is not known to be in cultivation.