Angelica biserrata (Shan et Yuan) Yuan et Shan, Plants perennial, 1–2 m, stout. Root cylindric, brown, up to 15 × 1–2.5 cm, aromatic. Stem purplish green, up to 1.5 cm thick, thinly ribbed, hispid above. Basal and lower leaves petiolate, petioles 30–50 cm, sheaths oblong, inflated, 5–7 cm, glabrous or slightly pubescent abaxially; blade broad-ovate, 20–30 × 15–25 cm, 2-ternate-pinnate; leaflets ovate-long-elliptic, 5.5–18 × 3–6.5 cm, base often decurrent along rachis, margin irregularly cuspidate-biserrate, apex acuminate, pubescent along nerves and margin. Peduncles 5–16cm, densely hispidulous; bracts 1, long-subulate, ciliate, deciduous; rays 10–25, 1.5–5 cm, densely hispidulous. The roots are widely used as the important traditional Chinese medicine “du huo,” especially as an analgesic and anti-inflammatory in the treatment of rheumatism and rheumatoid arthritis. Sparse shrubby thickets, damp slopes; 1000–1700 m. Anhui, Hubei, Jiangxi, Sichuan, Zhejiang.