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7a. Helianthus debilis Nuttall subsp. debilis
Beach sunflower
Stems decumbent, glabrous or puberulent. Leaf blades 3–10 cm, margins serrulate or shallowly, regularly serrate, abaxial faces sparsely, if at all, gland-dotted. Peduncles 10–20(–22) cm. Ray laminae 12–20 mm. Discs 11–14 mm diam. 2n = 34.
Flowering year round. Coastal dunes; 0–10 m; Fla.
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