短辐水芹 duan fu shui qin

Seseli benghalense Roxburgh, Fl. Ind., ed. 1832, 2: 93. 1832; Dasyloma benghalense (Roxburgh) de Candolle; D. glaucum de Candolle.

Plants 15–60 cm. Roots fibrous. Stems usually erect, angular, branched from base. Basal petioles 1–4 cm; blade triangular-ovate, 1–2-pinnate; ultimate segments rhombic-ovate, rarely lanceolate, 5–20 × 1–5 mm. Upper leaves smaller, sessile, 1-pinnate, pinnae rhombic ovate or lanceolate. Umbels 0.5–3.5 cm across; peduncles short, 0.5–1(–2) cm, often leaf-opposed, or obsolete; bracts absent; rays 4–10, 0.5–1 cm; bracteoles numerous, linear, as long as pedicels, umbellules 8–15-flowered; pedicels 0.5–2 mm. Calyx teeth ca. 0.4 mm. Styles 1.4–1.8 mm. Fruit ovoid, 2.5–3 × 1.5–2 mm; dorsal and intermediate ribs slightly thickened, corky. Fl. May–Jun, fr. Jun–Jul.

Moist ground at forest margins, muddy banks, irrigation ditches; 500–1500 m. Guangdong, Sichuan, Yunnan [N India].

This species has reputed medicinal value. It is very similar to, and possibly not distinct from, Oenanthe javanica (see the comment under the latter species); the two differ in umbel and fruit characters.