Arnica dealbata |
Arnica lonchophylla |
|
---|---|---|
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 |
CA
|
AK; SD; WY; AB; BC; MB; NB; NF; NS; NT; NU; ON; QC; SK; YT
|
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 | ||
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 |