Buddleja officinalis Maxim.

Buddleja officinalis Maxim.. Buddleja officinalis is a deciduous early-spring flowering shrub native to west Hubei, Sichuan, and Yunnan provinces in China. Discovered in 1875 by Pavel Piasetski, a surgeon in the Russian army, B. officinalis was named and described by Maximowicz in 1880. Introduced to western cultivation in 1908, B. officinalis was accorded the Royal Horticultural Society's Award of Merit three years later, and the Award of Garden Merit in 2002.