Description from Flora of China
Herbs 15-30 cm tall, densely white villous. Stems erect, unbranched. Leaves ovate-lanceolate, 1.5-2.2 cm X 4-5 mm, along with bracts and calyx densely white arachnoid-tomentose at margin and abaxially. Inflorescences spicate, 8-15 cm, many flowered; bract similar to and subequalling leaves; bractlets absent. Calyx 1-1.2 cm, 2-parted to base; segments 2-toothed; lobes lanceolate, 3-4 mm. Corolla dark blue or blue-purple, 2-2.5 cm; tube constricted, slightly enlarged upward; upper lip 2-lobed; lower lip slightly longer than upper; lobes oblong, margin irregularly dentate. Filaments 1.2-1.3 cm, sparsely pubescent near base. Pistil shorter than flowers. Style sparsely pubescent distally; stigma 2(-4)-lobed. Capsule oblong, ca. 1 cm. Seeds subglobose or oblong, ca. 0.3 X 0.2 mm. Fl. Apr-Jul, fr. Jul-Oct.
Slopes, sandy places; 600-1500 m. Hebei, Liaoning (Zhangwu Xian), Nei Mongol, Shaanxi, Shanxi (Huangqu Xian), Xinjiang [Kazakhstan, Kyrgyzstan, Mongolia, Tajikistan, Turkmenistan, Uzbekistan].