Flora of North America species comparison

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Arnica dealbata

mock leopardbane
Habit Plants 15–35 cm.
Stems

mostly simple.
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).
Involucres

campanulate to hemispheric.
Ray florets

5–12;

corollas yellow.
Disc florets

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).
Phyllaries

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

1–6.
Cypselae

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

pappi 0.
2n

= 38, 76.

Arnica dealbata
Phenology Flowering Jun–Aug.
Habitat Open forests, meadows, slopes
Elevation 1200–2400 m (3900–7900 ft)
Distribution
from FNA
CA
[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.
Parent taxa 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
Synonyms Whitneya dealbata
Name authority (A. Gray) B. G. Baldwin: Novon 9: 460. (1999)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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