小鱼荠苎 xiao yu xian cao

Lycopus dianthera Buchanan-Hamilton ex Roxburgh, Fl. Ind. 1: 144. 1820; Cunila nepalensis D. Don; Hedeoma nepalensis (D. Don) Bentham; Melissa nepalensis (D. Don) Bentham; Mosla ocimoides Buchanan-Hamilton ex Bentham; Mosla remotiflora Sun; Orthodon diantherus (Buchanan-Hamilton ex Roxburgh) Handel-Mazzetti; O. punctatum (Thunberg) Kudo var. tetrantherus Handel-Mazzetti.

Stems to 1 m, subglabrous, much branched. Petiole 0.3-1.8 cm, adaxially puberulent; leaf blade ovate-lanceolate to rhombic-lanceolate, 1.2-3.5 × 0.5-1.8 cm, papery, adaxially glabrous or subglabrous, abaxially gray, glabrous, sparsely impressed glandular, base attenuate, margin remotely acute serrate, apex acuminate to acute. Racemes numerous, 3-15 cm; bracts needlelike to linear-lanceolate, subglabrous, base broadly cuneate, apex acuminate, to 1 mm, rarely to 4 mm in fruit; rachis subglabrous. Pedicel ca. 1 mm, to 4 mm in fruit, finely puberulent. Calyx ca. 2 × 2-2.6 mm, dilated to ca. 3.5 × 4 mm in fruit, veins minutely hispid; upper lip reflexed, teeth ovate-triangular, middle tooth shorter than lateral; lower lip erect, teeth to slightly longer than upper lip. Corolla purplish, 4-5 mm, puberulent, inside obscurely hairy annulate or without hairy annulus. Nutlets gray-brown, subglobose, 1-1.6 mm in diam., loosely netted. Fl. and fr. May-Nov.

Hills, near water; 200-2300 m. Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Bhutan, India, Japan, Malaysia, Myanmar, Nepal, Pakistan, Vietnam]

Used medicinally.