Arnica acaulis

(Walter) Britton

Prelim. Cat., 30. 1888

Common names: Common leopardbane
Basionyms: Doronicum acaule Walter Fl. Carol., 205. 1788
Treatment appears in FNA Volume 21. Treatment on page 368. Mentioned on page 367.
Plants 20–80 cm. Stems simple. Leaves 2–4(–6) pairs, nearly all basal; sessile; blades (with 3, 5, or 7 prominent, subparallel veins) broadly elliptic, ovate, or rhombic, 4–15 × 1.5–8 cm, margins mostly entire, apices mostly obtuse, faces hirsute and stipitate-glandular (cauline leaves 0 or 1–2, distalmost often alternate, much reduced). Heads 3–20. Involucres campanulate. Phyllaries 12–18, narrowly ovate. Ray florets 10–16; corollas yellow. Disc florets: corollas yellow; anthers yellow. Cypselae dark gray to dark brown, 5–7 mm, glabrous or sparsely stipitate-glandular; pappi white, bristles barbellate. 2n = 38.

Phenology: Flowering Apr–Jun.
Habitat: Sandy pine woods and clearings, often in damp soils, chiefly on Coastal Plain
Elevation: 0–300 m



Del., D.C., Fla., Ga., Md., N.J., N.C., Pa., S.C., Va.




Lower Taxa

No lower taxa listed.