Description from Flora of China
Herbs perennial. Stems 10-24 cm tall, base 1-1.5 mm in diam., hirtellous, unbranched to few branched. Petiole 4-8.5 mm; leaf blade abaxially yellowish green or purplish, rhombic-ovate to ovate, 1.5-3.5 × 0.9-1.5 cm, herbaceous, adaxially sparsely strigose, abaxially glabrous, finely strigose along veins and margin, base cuneate-truncate, margin shallowly 2-4-serrate, apex acute to obtuse. Racemes terminal or subterminal, 1.5-2.7 cm; bracts ovate to rhombic-ovate, 4-7 mm, base cuneate to rounded, margin entire and ciliate, apex acute. Pedicel 2.5-3 mm, densely glandular hirtellous. Calyx ca. 2.5 mm, to 3.5 mm in fruit, densely glandular hirtellous; scutellum spreading, semicircular, ca. 2 mm, dilated to 3.5 mm in fruit. Corolla 1.7-2 cm, puberulent outside, sparsely puberulent on lower lip inside, base saccate-geniculate in front, erect, throat to 3 mm wide; middle lobe of lower lip triangular-ovate, ca. 3 × 4.5 mm, base abruptly constricted, apex emarginate; lateral lobes ovate, ca. 1.5 mm wide, apex obtuse. Nutlets ovoid, ca. 1 × 0.6 mm, tuberculate, adaxially umbonate near base. Fl. and fr. Mar-Apr.
* Forests. Taiwan (Ali Shan).