北京前胡 bei jing qian hu

Peucedanum trinioides H. Wolff.

Plants 20–60 cm. Stems several, central stem erect, others ascending-caespitose, much branched, glabrous and purplish. Basal leaves numerous; petioles fluted, with short, broadly ovate scarious-margined sheaths; leaf blade ovate-oblong, 2–3-pinnate/pinnatisect, pinnae 4–7 pairs; ultimate segments narrow, linear, 5–10 × ca. 1 mm, both surfaces glabrous, margins narrowly reflexed. Synflorescence much branched; umbels 2–4 cm across; bracts 3–7, ovate-lanceolate, 4–5 × 2–3 mm, broadly scarious-margined; rays 10–12, 1.1–1.5 cm, 4-angled, inner faces hirsute; bracteoles numerous, elliptic-lanceolate, longer than flowers; umbellules 15–20-flowered. Calyx teeth conspicuous. Petals white. Styles moderate, ca. 2 mm. Fruit ovate-ellipsoid, ca. 5 × 2.5 mm, smooth; dorsal ribs prominent; lateral ribs winged, wings thick, very narrow; vittae 1–2 in each furrow, 2 on commissure. Fl. and fr. Aug–Sep.

Upland stony areas; 1300–2500 m. Hebei.