Fr strongly flattened dorsally, the lateral ribs evidently winged, the others wingless; oil-tubes 1-3 in the intervals, 2 or more on the commissure; carpophore bifid to the base; umbels compound; pet white or yellow; stylopodium conic; perennials, usually coarse and erect from a taproot or stout rhizome, with pinnately or ternately compound or dissected lvs, often with well defined lfls. 100+, Old World.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
©The New York Botanical Garden. All rights reserved. Used by permission.