Caryopteris tangutica Maxim.

Shrubs 0.5-2 m tall, erect. Branchlets gray tomentose. Petiole 0.4-1 cm; leaf blade lanceolate to ovate-lanceolate, 2-5.5 X 0.5-2 cm, abaxially densely gray tomentose, adaxially green pilose, base cuneate to rounded, margin deeply serrate, apex acuminate to obtuse, veins 5-8 pairs. Inflorescences axillary or subterminal, very dense corymbose cymes. Calyx ca. 2.5-4 mm, deeply 5-lobed, outside densely villous; lobes lanceolate, usually longer than tube. Corolla blue-purple, tube 5-7 mm, lower lobe fringed. Stamens and style exserted. Ovary glabrous. Fruiting calyx ca. 6 mm. Fruits obovate-globose, ca. 5 X 4 mm, glabrous, nutlets with broadly winged edges.

Gansu, Hebei, Henan, Hubei, Shaanxi, Sichuan.

* Dry slopes; ca. 2500 m.