Fr oblong, slightly flattened laterally or subterete, the ribs slender but prominent; oil-tubes solitary in the intervals, 2 on the commissure; carpophore bifid to the base; umbels large, compound, on stout peduncles; invol and involucel none; umbellets numerous; sep none; pet yellow; stylopodium conic; coarse perennials with the lvs dissected into linear or filiform segments. 5, Europe and Medit. reg.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.