Buddleja brachystachya
Buddleja brachystachya is a small shrub endemic to the Yunnan, Sichuan and Gansu provinces of China, where it grows on open, rocky, often dry, places at altitudes of 2,000-2,400 m. It was first described and named by Friedrich Ludwig [Emil Diels|Diels] in 1912.
Description
Buddleja brachystachya grows to 0.3-0.9 m in height, with subquadrangular to subterete, densely stellate-tomentose branchlets. The small, opposite leaves have elliptic blades, 1-3.5 cm long by 0.5-1.7 cm wide, acute or obtuse at the apex, cuneate or decurrent at the base, the margins entire. The lavender inflorescences are small, thyrsoid, and often few-flowered, 1.5-3 cm long by 1.5-2.5 cm wide, the corollas 11-18 mm long. Ploidy 2n = 38.
Cultivation
The species is uncommon in cultivation. Hardiness: United [States Department of Agriculture|USDA] zone 10.