The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

mock leopardbane

alpine arnica, arnica lonchophylle, long-leaf arnica, northern arnica

Habit Plants 15–35 cm. Plants 12–50 cm.
Stems

mostly simple.

usually simple, rarely branched.

Leaves

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).

3–7 pairs, mostly cauline; petiolate (petioles, at least proximal, relatively narrow, ± equaling blades);

blades narrowly to broadly lanceolate or ovate, 3.5–14 × 0.5–3.7 cm, margins regularly dentate or denticulate, apices acute, faces glabrous or moderately pilose, sparsely to densely stipitate-glandular.

Involucres

campanulate to hemispheric.

campanulate-turbinate.

Ray florets

5–12;

corollas yellow.

6–17;

corollas yellow.

Disc florets

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

corollas yellow;

anthers yellow.

Phyllaries

5–12 (in 1 series), oblong or elliptic.

6–14, lanceolate (apices acute).

Heads

1–6.

3–8 (erect).

Cypselae

brown to black, 4–10 mm, sparsely to densely hirsute (hairs usually simple, rarely duplex) and sparsely stipitate-glandular;

pappi 0.

gray to brown, 3–6 mm, densely hirsute, sometimes stipitate-glandular;

pappi white, bristles barbellate.

2n

= 38, 76.

= 38, 57, 76.

Arnica dealbata

Arnica lonchophylla

Phenology Flowering Jun–Aug. Flowering June–Aug.
Habitat Open forests, meadows, slopes Dry to mesic, open montane slopes, open woodlands, stream gravels, shorelines, calcareous rocky outcrops, to lowland Arctic tundra
Elevation 1200–2400 m (3900–7900 ft) 0–1500 m (0–4900 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; SD; WY; AB; BC; MB; NB; NF; NS; NT; NU; ON; QC; SK; YT
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)

Source FNA vol. 21, p. 375. FNA vol. 21, p. 370.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Arnica Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Arnica
Sibling taxa
A. acaulis, A. angustifolia, A. cernua, A. chamissonis, A. cordifolia, A. discoidea, A. fulgens, A. gracilis, A. griscomii, A. lanceolata, A. latifolia, A. lessingii, A. lonchophylla, A. longifolia, A. louiseana, A. mollis, A. nevadensis, A. ovata, A. parryi, A. rydbergii, A. sororia, A. spathulata, A. unalaschcensis, A. venosa, A. viscosa
A. acaulis, A. angustifolia, A. cernua, A. chamissonis, A. cordifolia, A. dealbata, A. discoidea, A. fulgens, A. gracilis, A. griscomii, A. lanceolata, A. latifolia, A. lessingii, A. longifolia, A. louiseana, A. mollis, A. nevadensis, A. ovata, A. parryi, A. rydbergii, A. sororia, A. spathulata, A. unalaschcensis, A. venosa, A. viscosa
Synonyms Whitneya dealbata A. alpina subsp. lonchophylla, A. angustifolia subsp. lonchophylla, A. arnoglossa, A. chionopappa, A. gaspensis, A. lonchophylla subsp. arnoglossa, A. lonchophylla subsp. chionopappa
Name authority (A. Gray) B. G. Baldwin: Novon 9: 460. (1999) Greene: Pittonia 4: 164. (1900)
Web links