蒙自水芹 meng zi shui qin

Oenanthe rivularis Dunn, J. Linn. Soc., Bot. 35: 496. 1903.

Plants stout. Lower leaves almost 1-pinnate; pinnae rhombic-ovate, 15–30 × 5–10 mm, margins incised to laciniate. Fruit dorsal and intermediate ribs slightly thickened, corky.

Open forests, grassy valley slopes, marshlands; 1100–2500 m. Guizhou, Sichuan, Yunnan [?Laos].

Recent records from Laos require confirmation. This variety is used in Guizhou and Yunnan as a regional substitute for “shui qin,” a dietary herb of traditional Chinese medicine (see Oenanthe javanica).