Fr oblong or elliptic, dorsally flattened; ribs prominent, the dorsal narrow, the lateral narrowly to evidently winged; oil-tubes solitary in the intervals, 2-4 on the commissure; carpophore bifid to the base; umbels compound, terminal and lateral, overtopping the lvs; rays numerous; bracts and bractlets usually none; sep none; pet yellow; stylopodium conic; strongly scented annuals, the lvs pinnately dissected into numerous filiform segments. 4, Old World.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.