Diffuse, leafy perennial with prostrate or weakly ascending stems 2.5-7 dm; stipules of middle and upper lvs connate below or not, lanceolate, narrowly pointed, usually deflexed; lfls 17-29(-31), lance-elliptic or oblong, 0.5-3.5 cm, pubescent at least beneath; peduncles 4-11 cm, shorter than the subtending lf; cor ochroleucous, 12-16 mm; fr ascending or spreading, bilocular, hairy, subsessile, firm-walled, broadly ovoid or subglobose, 6-14 נ5-8(-10) mm. Native of Europe, casually intr. in disturbed moist places in w. U.S., and rarely established with us, as in Ingham Co., Mich.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.