澜沧羌活 lan cang qiang huo

Plants 50–100 cm. Taproot slightly aromatic. Stem little-branched above. Lower leaves 2-ternately dissected; petioles 4–6 cm; blade broadly triangular, 8–15 × 8–15 cm; ultimate segments ovate-lanceolate to oblong-lanceolate, 2.5–8 × 1–3 cm, puberulous along veins, margins glabrous, abaxially glaucous, base cuneate or truncate, sometimes oblique, margins irregular or sharply serrate. Leaves reduced upwards becoming 2–3-lobed; segments linear. Umbels 4–10 cm across; bracts absent, or 1, linear, 0.5–1.5 cm; rays 5–9, 1–3.5 cm, unequal, spreading; bracteoles 2–4, linear, shorter than flowers; umbellules 9–14-flowered, open; pedicels 4–8 mm, unequal. Calyx teeth ovate-lanceolate, 0.3–0.6 mm. Fruit subglobose, ca. 3–3.5 × 2.5–3 mm; all ribs broadly winged; vittae 2(–3) in each furrow, 2 on commissure. Fl. Jul–Aug, fr. Sep–Oct.

Forest margins, mountain slopes, gravelly river banks; 2000–3000 m. SW Sichuan (Muli), NW Yunnan.