Arnica dealbata
Arnica acaulis
mock leopardbane
common leopardbane
mostly simple.
simple.
3–8 pairs, mostly crowded toward bases; petiolate (at least proximal);
blades elliptic to oblanceolate or obovate, 5–10 × 0.5–3.5 cm, margins entire, apices acute, faces densely hairy (hairs relatively short, curly) and sessile-glandular (distal leaves sessile, much reduced).
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).
campanulate to hemispheric.
campanulate.
5–12;
corollas yellow.
10–16;
corollas yellow.
(functionally staminate): corollas yellow;
anthers yellow (styles rarely exserted).
corollas yellow;
anthers yellow.
5–12 (in 1 series), oblong or elliptic.
12–18, narrowly ovate.
1–6.
3–20.
brown to black, 4–10 mm, sparsely to densely hirsute (hairs usually simple, rarely duplex) and sparsely stipitate-glandular;
pappi 0.
dark gray to dark brown, 5–7 mm, glabrous or sparsely stipitate-glandular;
pappi white, bristles barbellate.
= 38, 76.
= 38.
Arnica dealbata
Arnica acaulis
Although Arnica dealbata lacks pappi, morphologic, cytologic, and molecular data (B. G. Baldwin and B. L. Wessa 2000; Baldwin et al. 2002) clearly support its inclusion in Arnica.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
MD Biodiversity
