Branched, diffuse or ascending annual 1-3 dm, glandular-puberulent; lvs elliptic-oblong to oblong-spatulate, 1-3 cm, narrowed to the base, glandular-denticulate; stipules lanceolate, glandular-ciliate; fls 1-3 in the axils on pedicels 1-3 mm; sep lance-acuminate, 2.5-3 mm, scarious-margined, rough on the keeled midnerve; pet oblong, shorter than the sep; stamens usually 5; fr globose, 2 mm; seeds 0.3-0.5 mm. Muddy or sandy shores; s. Ill. and Kans. to Wash. and Calif.

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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