Arnica acaulis
Prelim. Cat., 30. 1888.
Common names: Common leopardbane
Basionym: Doronicum acaule Walter
Revision as of 15:38, 18 September 2019 by FNA>Volume Importer
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
Distribution
Del., D.C., Fla., Ga., Md., N.J., N.C., Pa., S.C., Va.
Discussion
Selected References
None.
Lower Taxa
None.