Buddleja ibarrensis is an endangered species endemic to a small area of Ecuador in the vicinity of Ibarra in subtropical or tropical moist montane forest at an elevation of 2,200 m threatened by deforestation. B. ibarrensis was first described and named by Norman.[1]
Buddleja ibarrensis is a shrub closely related to B. americana. The young branches are subquadrangular and tomentose, bearing elliptic leaves 8 - 15 cm long by 3.7 - 9 cm wide on 2 - 3 cm petioles membranaceous, glabrescent above, and tomentose below. The white or cream inflorescence 10 - 20 cm long by 7 - 18 cm wide comprises two or three orders of branches bearing cymules 1 - 2 cm in diameter each with 5 - 15 flowers. The funnelform corolla is 3.5 - 4 mm long.[1]
The shrub is not known to be in cultivation.