Perennials, more than 30 cm tall, suberect or basally decumbent and curved. Roots adventitious. Stems subquadrangular, narrowly winged. Petiole 2-6 mm, narrowly winged; leaf blade triangular to broadly triangular-ovate, 1.6-2.3 X 1.2-2 cm, abaxially subglabrous, adaxially sparsely hispidulous, base truncate to broadly cuneate, margin triangular serrate, apex acute to rarely obtuse. Racemes 6-10 cm, in large lax panicles; bracts linear-lanceolate, ca. 5 mm, spreading to reflexed, margin entire. Pedicel 1-1.5 cm, glabrous. Calyx 6-7 mm, lobed to base; lobes linear-lanceolate, glabrous or sparsely hairy, apex acuminate, midrib conspicuous. Corolla white, ca. 6 mm. Capsule ovoid-oblong to fusiform-ovate, shorter than persistent calyx. Seeds ovoid, bulging on surface.

* Guangdong (Qujiang Xian).