水芹(原亚种) shui qin (yuan ya zhong)

Sium javanicum Blume, Bijdr. Fl. Ned. Ind. 5: 881. 1826; Dasyloma javanicum (Blume) Miquel; D. subbipinnatum Miquel; Falcaria javanica (Blume) de Candolle; Oenanthe decumbens Koso-Poljansky; O. javanica subsp. stolonifera (Roxburgh) Murata; O. kudoi Suzuki & Yamamoto; O. normanii Metcalf; O. stolonifera (Roxburgh) de Candolle; O. stolonifera var. javanica (Blume) Kuntze; O. subbipinnata (Miquel) Drude; Phellandrium stoloniferum Roxburgh.

Plants slender. Umbels 3–5 cm across. Rays subequal, 1–3 cm. Bracteoles linear. Fruit subglobose. Fl. Jun–Jul, fr. Aug–Sep. 2n = 20.

Marshlands, lakeshores, muddy stream banks, shallow water; 600–3000 m. Throughout China [India, Indonesia, Japan, Korea, Laos, Malaysia, Myanmar, Nepal, New Guinea, Pakistan, Philippines, Russia, Thailand, Vietnam].

The shoots and leaves comprise the dietary herb “shui qin” of traditional Chinese medicine.