Pineland false sunflower

Helianthella tenuifolia Torrey & A. Gray, Fl. N. Amer. 2: 333. 1842

Perennials, 40–100+ cm (tubers 2–4 cm). Leaves all opposite, or opposite and alternate, or all alternate; blades linear-filiform, the larger 3–7 cm × 0.5–2 mm. Involucres campanulate to hemispheric, 10–12 × 10–15 mm. Paleae 7–8 × 1.5–2 mm (central lobes usually longer than lateral lobes). Phyllaries spreading. Ray laminae 20–40 mm. Disc florets 40+; corollas 4–5 mm. Cypselae 3.5–4 mm; pappi of 1–2, lacerate scales 0.2–2 mm plus 0–4 scales 0.2–0.3 mm. 2n = 34.

Flowering May–Sep. Sandhills, flatwoods; 10–30+ m; Ala., Fla.

Phoebanthus tenuifolius in known from southeastern Alabama and the panhandle of Florida.