A medium-sized perennial herb up to 70(-100) cm tall, tuberous root short with a few thickened secondary roots. Stems are glabrous, striate and solid. Leaves are alternate, long-petiolate in lower part of stem, 1-2 ternately pinnate, deltoid in outline, 10-25 cm long, glabrous, leaf sheaths present, stipules absent; leaflets trifid, 5-10 cm x 1-2.5 cm, cuneate, truncate or rounded at base, ultimate segments lanceolate, long-acuminate, margin dentate, reticulate venation prominent. Inflorescence a compound many-flowered umbel, papillate, rays 30-40, 3-8 cm long, secondary rays (pedicels) 0.7--1.8 cm long; involucre consisting of a few filiform-linear bracts. Flowers with obsolete calys, petals unobtrusive white, ovary inferior, styles 2. Fruits consists of two 1-seeds mericarps, oblong, 4-5 mm long, slightly compressed, narrowed towards the base, mericarps with slender ribs, lateral ribs slightly winged, vittae 3-4 in the intervals, 4 on the commissure. |