Description from Flora of China
Herbs erect, with yellowish indumentum. Stems ca. 60 cm, densely retrorse appressed pilose, leafless toward base, unbranched. Leaves lanceolate to narrowly lanceolate, 7-15 × 1.5-3 cm, ± leathery, adaxially densely appressed pilose, sparsely so with age, abaxially glabrous, densely appressed pilose along veins, sparsely so with age, base attenuate or abruptly obtuse, margin remotely serrulate, apex acuminate. Verticillasters 2-8-flowered; bracteoles subulate, less than 0.5 mm. Pedicel 3-4 mm. Calyx obconical, ca. 6 mm, sparsely fine appressed pilose, conspicuously 5-veined apically; teeth ca. 1.5 mm, inconspicuous so that calyx mouth apears subtruncate, extended into wings from veins. Corolla white or purple-white, ca. 1.6 cm; tube slightly longer than calyx, glabrous, interior pilose annulate; limb pilose outside; upper lip oblong, ca. 10 × 4.5 mm, galeate, concave, undulate; lower lip ovate, middle lobe ovate. Ovary apex sparsely puberulent.
* Forests, rocky valleys. Guangdong.