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4. Tetragonotheca helianthoides Linnaeus, Sp. Pl. 2: 903. 1753.
Stems patently to retrorsely ± villous. Leaves cauline, not connate-perfoliate; blades ovate to rhombic or lanceolate, 7–20 × 3–13 cm, coarsely toothed. Ray florets 6–14; laminae 15–40+ mm. Cypselae ± ovoid, 4–6 mm; pappi 0. 2n = 34.
Flowering mid spring–early summer. Sandy soils, often in thickets; 0–400 m; Ala., Fla., Ga., Miss., N.C., S.C., Tenn., Va.
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