Plants glabrous to densely pubescent, stoloniferous, each stolon ending in a shallow, slender tuber from which a solitary stem arises the next year; lvs thin, lanceolate to elliptic, 5–10 × 1–3 cm, sharply acute to long-acuminate, subentire to sharply serrate, the margins below the lowest tooth concave, forming a petiolar base, or the lf petioled; bracts minute; cal-lobes 5, narrowly triangular, often acuminate but not subulate-tipped; cor 5-lobed, twice as long as the cal; nutlets 1.2–1.5 mm, two-thirds as wide, very flat across the truncate-tuberculate summit, without a distinct dorsal area. Me. to Fla. and Tex., mainly on or near the coastal plain, w. irregularly to s. Mich., and common thence to Ill., Mo., and Ark.
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