Description from Flora of China
Herbs perennial. Stems ca. 50 cm tall, very densely gray appressed stellate lanate. Petiole 1.5-2.5 cm; leaf blade lanceolate, 10-16 × 2.1-3.4 cm, adaxially densely stellate pubescent, abaxially densely gray appressed stellate tomentose, base attenuate-cuneate to subobtuse, margin undulate, apex acuminate. Cymes axillary, 3- or 4-flowered, subsessile; bracts ovate to oblong, 10-14 × 4-7 mm, margin entire to slightly dentate; bracteoles linear, ca. 9 × less than 1 mm. Calyx narrowly campanulate, ca. 8.5 × 4 mm, gray stellate lanate; teeth lanceolate, ca. 4.5 mm, apically acumi- nate. Corolla white, tinged yellow, ca. 3.8 cm, puberulent; tube ca. 1 mm wide, apical 2/3 dilated to ca. 7 mm wide at throat; upper lip straight, circular, ca. 5 mm wide; lower lip ca. 9 mm, middle lobe circular, ca. 3.5 mm wide; lateral lobes ca. 2 mm wide, undulate. Ovary white granular. Nutlets unknown. Fl. Aug.
* Forests; ca. 700 m. Hainan.