劲直西风芹 jin zhi xi feng qin

Ammi ehrenbergii (H. Wolff) M. Hiroe; Athamanta stricta (Ledebour) Ledebour ex Steudel; Pseudammi ehrenbergii H. Wolff.

Plants 30–70 cm, monocarpic. Caudex simple, 4–7 mm thick. Stem solitary, branched above, finely grooved, solid, glabrous. Leaf blade triangular to ovate, 8–15 × 4–7 cm, 3-pinnatisect, glabrous; pinnae petiolulate; ultimate segments filiform or narrowly linear, 20–50 × 0.5–2 mm, obtuse. Cauline leaves appressed to stem, uppermost 2–3-pinnate. Synflorescence corymbose; umbels 5–9 cm across; bracts absent; rays 15–35, 2.5–3 cm, almost equal, ribbed, glabrous; bracteoles 8–10, linear or filiform, slightly shorter than pedicels, herbaceous; umbellules 20–30-flowered; pedicels 2.5–4 mm. Calyx teeth short, triangular, glabrous. Petals white, emarginate, glabrous. Stylopodium conic. Fruit ellipsoid to ovoid, slightly dorsally compressed, 3–4 × 1–1.5 mm, glabrous; ribs equal, keeled; vittae solitary in each furrow, 2 on commissure. Fl. and fr. Jul–Aug.

Steppe grasslands, damp areas, occasionally on saline soils; ca. 1000 m. Xinjiang [Kazakhstan, Russia].