Description from Flora of China
Herbs perennial. Stems to 35 cm tall, erect, subterete, base ca. 1.5 mm in diam., densely antrorse puberulent, long branched. Petiole 4-10 mm; leaf blade ovate, 1.2-3.2 × 0.8-2 cm, papery, pubescent, base truncate-cuneate to subrotund, margin remotely 2-4-dentate, with antrorse ciliate hairs, apex obtuse. Racemes terminal, 2.5-9(-13) cm, subsessile, often ± grouped into panicles; bracts subsessile, narrowly oblong to narrowly lanceolate, 2-3 × 0.5-1 mm, pubescent, basally attenuate, margin entire, apically obtuse. Pedicel ca. 4 mm, densely puberulent. Calyx ca. 1.8 mm, ca. 4 mm in fruit, pubescent; scutellum ca. 1.5 mm. Corolla unknown. Nutlets dark blackish brown, ovoid, ca. 1 × 0.8 mm, tuberculate, adaxially concave, umbonate. Fr. Jul-Dec.
* Shady areas in dense forests. Hainan (Ledong Xian).