Buddleja fusca is a species of flowering plant in the figwort family, Scrophulariaceae that is endemic to Madagascar. It grows along forest edges or in thickets at altitudes of 1,500 - 2,500 m.[1] The species was named and described in 1884 by Baker.[2]
Buddleja fusca is a shrub 1 - 3 m in height, the branchlets nearly terete, bearing opposite, petiolate dark green leaves highly variable in shape and size, but generally small, elliptic to ovate, 1 - 4.5 cm long by 0.5 - 2.2 cm wide, acuminate to rounded at the apex, cuneate to truncate at the base; the margins irregularly serrate - dentate to repand - dentate to entire. The yellow to orange inflorescences comprise terminal and axillary thyrsoids, 1.5 - 6 cm long by 1.5 - 2 cm wide; the corollas 8 - 11 mm long.[1]
Buddleja fusca is not known to be in cultivation.[1]