Herbs perennial, 40--60 cm tall, strongly curry-scented when dry. Stems 2 to many, erect, angular or winged, branched from middle. Leaves alternate; petiole 2--8 mm; leaf blade ovate to lanceolate, 1.5--7 X 1--3 cm, adaxially glabrous or sparsely bristly, base short attenuate to obtuse, rarely subrounded to truncate, often slightly asymmetrical, margin entire or obscurely undulate; veins 4 or 5 pairs; veinlets inconspicuously reticulate. Pedicel 1.5--3.5 cm. Flowers solitary, axillary. Calyx lobes ovate to lanceolate, 2--4 mm, apex acuminate to subulate. Corolla yellow, 6--8 mm, deeply parted; lobes narrowly oblong to linear, 5--7 X 1.8--3 mm, apex subobtuse. Filaments connate basally into a ca. 0.5 mm high ring, fused with corolla, free parts ca. 1.3 mm; anthers 3.5--4 mm, basifixed, opening by apical pores. Style filiform, slightly longer than stamens. Capsule globose, 3--4 mm in diam.

Mixed forests, streamsides, acidic soils, rocky limestone slopes; 300--2000 m. Fujian, Guangdong, Guangxi, Guizhou, S Henan, Hunan, Jiangxi, Sichuan, Taiwan, E Yunnan, Zhejiang [Philippines]