Arnica nevadensis

A. Gray

Proc. Amer. Acad. Arts 19: 55. 1883.

Common names: Nevada arnica Sierra arnica
Endemic
Synonyms: Arnica tomentella Greene
Treatment appears in FNA Volume 21. Treatment on page 374. Mentioned on page 368.

Plants 10–50 cm. Stems simple. Leaves 2–3 pairs, mostly cauline (basal leaves often persistent on sterile rosettes); petiolate (petioles narrowly to broadly winged); blades elliptic to ovate, 3–8 × 2–4 cm, margins entire or denticulate, apices acute to rounded, faces stipitate-glandular. Heads 1 (–3). Involucres campanulate-turbinate. Phyllaries 10–16, oblanceolate. Ray-florets 6–14; corollas yellow. Disc-florets: corollas yellow; anthers yellow. Cypselae dark gray, 6–9 mm, stipitate-glandular; pappi white or tawny, bristles barbellate to subplumose. 2n = 76.


Phenology: Flowering Jul–Aug.
Habitat: Coniferous forests, meadows, rocky slopes
Elevation: 1500–3000 m

Distribution

V21-940-distribution-map.gif

Calif., Nev., Oreg., Wash.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Arnica nevadensis"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +  and cymiform +
indeterminate +  and determinate +
Steven J. Wolf +
A. Gray +
decurrent +
compound +  and simple +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
elliptic;ovate +
2cm;4cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellate +  and subplumose +
connate +  and distinct +
Nevada arnica +  and Sierra arnica +
stipitate-glandular +  and hairy +
stipitate-glandular +
obovoid-cylindric +, fusiform +  and conic +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +, Nev. +, Oreg. +  and Wash. +
1500–3000 m +
stipitate-glandular +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Coniferous forests, meadows, rocky slopes +
discoid +  and radiate +
in cymiform or corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
campanulate-turbinate +
2 (?) +  and 3 (?) +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
denticulate +  and entire +
2-carpellate +
subplumose +  and barbellate +
tawny +  and white +
persistent +
10 +  and 50 +
aristate +
Flowering Jul–Aug. +
10 +  and 16 +
Proc. Amer. Acad. Arts +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
distinct +
4 +  and 20 +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Arnica tomentella +
Arnica nevadensis +
species +
campanulate +  and cylindric +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
toothed +  and entire +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +