Much-branched annual 1-2 dm; lvs cleft into 3(5) linear segments; lower lip of the yellow (purple) cor much prolonged, its base narrow, with 2 small lateral lobes, the median lobe dilated and merely retuse; 2n=28. Native of the Mediterranean region, intr. in se. Va. May-Sept.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
