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Perennial, up to 0.5 m tall; roots 1 or 2, fleshy, pencil-like. Leaves absent at flowering, uniform, all much-dissected, ultimate segments glossy green, acute. Umbels on relatively long, slender, often branched peduncles, raylets relatively stout, < 5 mm long. Flowers yellow, sepals obtuse. Fruit 2.5-3 mm long, ovoid, mericarps isodiametric, ribbed, homomorphic, vittae present, rib oil ducts inconspicuous.
Perennial to 50 cm; roots 1 or 2, fleshy. Leaves absent at flowering, first-formed and later ones much dissected, ultimate segments acute. Flowers yellow, in compound, flat-topped umbels, peduncle long, flimsy. Fruit 2.5-3.0 mm long, ovoid, mericarps isodiametric, ribbed, homomorphic, vittae present, rib oil ducts inconspicuous.
A herb. It keeps growing from year to year. It grows 50 cm tall. The leaves near the base have 3 narrow leaflets. The leaves on the stems sheath the stem. The leaves are feathery. The roots are fleshy and like a pencil. The leaves and flowers do not occur at the same time.
