羽苞藁本 yu bao gao ben

Trachydium daucoides Franchet, Nouv. Arch. Mus. Hist. Nat., sér. 2, 8: 245. 1886; Angelica daucoides (Franchet) M. Hiroe; Ligusticopsis daucoides (Franchet) Lavrova & Kljuykov; Ligusticum dielsianum H. Wolff; Ligusticopsis dielsiana (H. Wolff) Pimenov & Kljuykov.

Plants 20–50 cm, glabrous. Root stout, cylindrical, 4–10 × ca. 1.5 cm. Stem single, 2–3-branched or unbranched, base clothed with fibrous remnant sheaths. Basal petioles 8–18 cm; blade oblong-ovate, 8–20 × 4–5 cm, 3–4-pinnate, primary pinnae 5–6 pairs; ultimate segments linear, 3–4 × ca. 1 mm. Cauline leaves sessile, sheathing, blade similar to basal, reduced. Umbels terminal and lateral, 7–10 cm across; bracts 1–2, pinnate or absent; rays (10–)14–23, unequal, 1.5–6 cm, scabrid; bracteoles 8–10, 1–2-pinnate, longer than umbellules. Calyx teeth 2–3, subulate, unequal, 1–2 mm. Petals white or purplish abaxially, obovate, base cuneate. Styles ca. equaling stylopodium. Fruit oblong, 6–8 × 3–4 mm; dorsal and intermediate ribs raised, lateral ribs winged; vittae 1–3 in each furrow, 4–6 on commissure. Seed face plane. Fl. Jun–Aug, fr. Sep–Oct. 2n = 22*.

Coniferous forest margins, alpine scrub and meadows, grassy slopes, moist rock crevices; 2600–4800 m. W Hubei, Sichuan, S Xizang, N Yunnan.

This species has reputed medicinal value (in Sichuan and Yunnan). An isotype of Ligusticum dielsianum (Yunnan: Huize, Ta-hai, E. E. Maire 1027, E) is so similar to L. daucoides that the two entities cannot be separated.

Pimenov & Kljuykov (Bot. Zhurn. 89: 1654. 2004) treat Ligusticum franchetii as a synonym of this species.