云南独活 yun nan du huo

Plants slender, ca. 60 cm high. Root cylindrical; caudex covered with a few residual fibers of sheaths. Stem solitary, little-branched, sparsely setulose. Lower leaves pinnate; pinnae ovate, base cordate or obtuse, margins serrulate. Distal leaves 3-lobed, smaller, sessile. Bracts 1–3, linear; rays 6–10, unequal, 2–4 cm; bracteoles 4–5, linear, shorter than pedicels; umbellule 10–15(–20)-flowered. Calyx teeth lanceolate. Petals white, outer flowers in umbel conspicuously radiant. Fruit suborbicular, small, ca. 4 × 4 mm; dorsal ribs filiform, lateral ribs broadly winged; vittae filiform, solitary in dorsal furrows, 2 in lateral furrows, extending to 3/4 length of mericarp, 4 on commissure, slightly shorter than dorsal. Seed face plane. Fl. Jun–Jul, fr. Aug–Sep.

Grassy slopes; 3600–4100 m. N Yunnan.

This incompletely known species is recorded only from a few collections.