Coarse perennial from a stout taproot; stems decumbent or procumbent, 3-10 dm; stipules foliaceous; lfls 9-15, oval, 1-4.5 cm, glabrous or nearly so, peduncles 2-4(-8) cm, shorter than the subtending lf; cor dingy ochroleucous, 11-14 mm; fr incurved- ascending, bilocular, glabrous, linear, 3-4 cm, on a stipe 2-4 mm; 2n=16. Native of Europe, rarely established in fields and waste places, notably in Ind. and n. N.Y. May-Aug.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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