Buddleja nana W. W. Smith; B. purdomii W. W. Smith; B. purdomii var. fulvotomentosa Z. Y. Zhang.

Shrubs to 1 m tall. Branchlets subquadrangular to subterete, stellate tomentose, glabrescent. Leaves sessile or petiolate; petiole to 7 mm, stellate tomentose; leaf blade elliptic to ovate or very narrowly so, 1--3.5 X 0.5--1.7 cm, abaxially sparsely to densely stellate tomentose and with some glandular hairs, adaxially sparsely stellate tomentose and with some glandular hairs or almost glabrous, base rounded, cuneate, or decurrent, margin entire or obscurely sinuate, apex acute to slightly obtuse, lateral veins 4 or 5 pairs. Inflorescences terminal, thyrsoid cymes, 6--12-flowered, 1.5--3 X 1.5--2.5 cm. Calyx outside shortly stellate tomentose; lobes triangular to narrowly triangular, 1--4 mm. Corolla lavender; tube often curved, 8--13 X 1.5--2 mm, outside shortly stellate tomentose, inside pilose or sometimes glabrous at base; lobes suborbicular, 3--5 X 3--5 mm, inside glabrous, margin entire or subcrenate. Stamens inserted slightly above middle of corolla tube, included; anthers oblong to suboblong. Ovary ellipsoid, 1.5--2 mm, stellate tomentose except for glabrous base. Stigma clavate. Capsules ovoid to ellipsoid, 5--6 X ca. 2 mm, glabrous or stellate tomentose. Seeds ovate, ca. 1 mm, unwinged. Fl. Mar-Jun.

* Scrub in mountains, along dry river banks; 1000--2700 m. Gansu, Sichuan, Yunnan.