青海当归 qing hai dang gui

Angelica chinghaiensis R. H. Shan ex K. T. Fu; A. wulsiniana H. Wolff.

Plants perennial, 30–90 cm. Root conic, yellowish brown, 5–10 cm. Stem purplish green, ribbed, hispidulous above. Basal and lower cauline leaves petiolate, petioles 3–5 cm, sheaths ovate, 4–6.5 × ca. 2 cm; blade triangular-ovate, 1–2-pinnate; leaflets oblong to elliptic, 1.5–4 × 1–2 cm, base almost flat, margin crenate, apex obtuse, hispidulous along nerves and margin. Umbels 6–10 cm across; bracts absent; rays 9–19, 1.5–4 cm, thick, unequal and scabrous; bracteoles 6–10, linear, caudate-acuminate; umbellules 18–40-flowered; pedicels unequal. Calyx teeth obsolete. Petals white or yellowish white, rarely purple-red, long-ovate. Stylopodium dark purple. Fruit oblong to ovoid, 5–6.5 × 3.5–5 mm; dorsal ribs broad, plane, lateral ribs broad-winged, but narrower than the body; vittae 1–2 in each furrow, 2–3 on commissure. Fl. Jul–Aug, fr. Aug–Sep.

Shrubby thickets, mountain ravines, meadows; 2600–4000 m. Gansu, Qinghai, Sichuan.

The roots have reputed medicinal properties.