四川当归 si chuan dang gui

Angelica henryi H. Wolff.

Herbs ca. 75 cm high. Rhizome long, creeping. Stem ribbed, setulose above. Basal and middle leaves petiolate, petioles 12–15 cm, sheaths ovate, pubescent; blade broad-triangular, 12–20 × 16–28 cm, 2-ternate-pinnate; leaflets subsessile, obliquely triangular-ovate, ca. 5 × 2.5 cm, base truncate, margin incised-serrate, teeth white-mucronulate, sparsely setulose on nerves abaxially. Upper leaves reduced, sheaths broad-inflated. Bracts few, linear-lanceolate; rays 15–40, 2–4 cm, setulose, unequal; bracteoles several, short-linear to lanceolate, reflexed. Petals white, obcordate, ca. 2 × 2 mm, 1-nerved. Fruit suborbicular or ellipsoid, 5–6 × 4–5.5 mm; dorsal ribs prominent, lateral ribs thin-winged, wings wider or as wide as the body; vittae 1 in each furrow 2 on commissure. n = 11*.

Forests; 2400–3600 m. W Hubei (Yichang), E Sichuan.

This poorly known species is recorded only from a few localities.