Compilation
Erigeron jonesii

Perennials, 10–25(–40) cm; taprooted, caudices simple or branched, retaining old leaf bases. Stems (purplish proximally) decumbent-ascending, moderately hirsute (hairs deflexed), sometimes minutely glandular distally. Leaves basal (persistent) and cauline; basal (erect) blades (3-nerved) oblanceolate to spatulate or subelliptic, 20–80(–180) × 3–13 mm (bases attenuate), entire (apices rounded to obtuse), faces strigoso-hirsute to hirsutulous, eglandular; cauline blades linear-oblong, gradually reduced distally. Heads 1–4 (from branches at midstem or distally). Involucres 5–6(–7) × 9–11(–18) mm. Phyllaries in (2–)3–4 series, sparsely to moderately hirsute, minutely glandular. Ray florets 25–40(–52); corollas white or blue, 4–8 mm, laminae not coiling or reflexing. Disc corollas 3–3.5(–4.8) mm. Cypselae 2.2–2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 15–20(–24) bristles.