Perennial, the slender, spreading or ascending stems 2–5 dm, much branched, often sparsely retrorse-scabrous on the angles; lvs in 6’s or those of the branches in 4’s, linear or linear-elliptic, 1–2 cm, sharply acute or cuspidate, antrorsely scabrous on the margins; infls terminal and divaricately spreading from the upper axils, 2–3 times branched, the branches and short pedicels very slender; cor 4-lobed, white, 2.5–3 mm wide; fr smooth, 2 mm. Dry woods; N.J. to Minn. and Nebr., s. to Tenn. and Ark., most abundant westward. June–Aug.
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