Herbs perennial, 40--70 cm tall, ± aromatic when dry. Stems single or several, conspicuously quadrangular; young parts and nodal regions copiously minutely glandular. Leaves alternate; petiole 1--1.5(--2.5) mm, glandular; leaf blade elliptic, 6--12(--17) X 3--6.8 cm, base cuneate, margin narrowly revolute, apex acute; veins 6--8 pairs. Pedicel 3--8 mm, elongating to 1.2 cm in fruit, glandular. Flowers 2 or 3, crowded on extremely abbreviated (2--5 mm) branches; bracts leaflike, 1.5--3.5 X 0.5--1.5 mm. Calyx lobes lanceolate, 6--9 X ca. 2 mm, copiously minutely glandular, apex acuminate. Immature corolla ca. 5 mm, parted nearly to base; lobes narrowly ovate, apex acute. Filaments connate basally into a ca. 0.3 mm high ring, free parts very short; anthers ca. 4 mm, basifixed, opening by apical pores. Capsule globose, 2.5--3 mm, shorter than calyx.

* Mixed forests. N Guangxi.