锐叶茴芹 rui ye hui qin

Plants perennial, 40–100 cm, glabrous. Root fusiform or napiform, 3–6 × ca. 0.7 cm. Stem 2–3-branched. Basal petioles 6–10 cm; blade 2–3-ternate; ultimate segments ovate-lanceolate or rhombic, 2–6 × 1–2 cm, abaxially pubescent on veins, margins sharply serrate, apex acuminate or caudate. Cauline leaves similar to basal, 2-ternate or 3-lobed. Umbels 1.5–4 cm across; bracts (0–)2–6, linear, ca. 2 mm; rays 9–20, 2–7 cm, very unequal; bracteoles 3–8, linear-filiform, ca. 1 mm, shorter than pedicels; umbellules 5–8 mm across, 10–25-flowered, polygamous; pedicels 2–3 mm, elongating to 7 mm in fruit. Calyx teeth conspicuous, lanceolate, ca. 0.5 mm. Petals white, obovate, apex with incurved lobule. Stylopodium conic; styles 2–3 × stylopodium, reflexed. Fruit ovoid, ca. 4 × 3 mm, base cordate, surface glabrous; vittae 3 in each furrow, 4 on commissure. Seed face plane. Fl. Jun–Aug, fr. Aug–Oct.

Coniferous forests, grassland and scrub at forest margins; 1300–3400 m. Gansu, Guizhou, Hebei, Henan, Hubei, Shaanxi, Sichuan.