Sp. Pl. 1: 90. 1753.
Herbs, biennial or perennial. Stems: basal produced; flowering erect, 20–50 cm, sparsely sericeous. Leaves of flowering stems whorled or opposite; blade elliptic to lanceolate, 8–15 × 4–7 mm, apex acute, abaxial surface pilose on midvein and margins, adaxial sparsely pilose or glabrous. Pedicels 1 per axil, 0.5–2 mm. Flowers: calyx 1.6–2 mm, outer sepals longer than inner. Capsules ellipsoid to ellipsoid-ovoid, 1.5–2 × 1–1.5 mm, ± equaling calyx. Seeds 2–3.
Phenology: Flowering summer; fruiting late summer–fall.
Habitat: Dry sandy or gravelly soil of pine-oak woodlands, savannas, sandhills, disturbed sites
Elevation: 10–600 m
Ont., Ala., Conn., Del., Fla., Ga., Ill., Ind., Ky., La., Md., Mass., Mich., Miss., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Tex., Vt., Va., Wis.
Lechea minor may have been extirpated from the Canadian portion of its range.