Arnica ovata

Greene

Pittonia 4: 161. 1900.

Common names: Sticky leaf arnica
Endemic
Synonyms: Arnica diversifolia Greene Arnica latifolia var. viscidula A. Gray
Treatment appears in FNA Volume 21. Treatment on page 372. Mentioned on page 368.

Plants 10–50 cm. Stems (forming clumps) simple or branched among heads. Leaves 2–3 (–4) pairs (basal 1–2 pairs usually withered by flowering, petiolate, petioles broadly winged, blades round-ovate, relatively small; sterile rosettes lacking), mostly cauline; petiolate (at least middle pair, petioles broadly to narrowly winged); blades broadly deltate to ovate, 4–8 × 2–6 cm (middle pair largest), margins irregularly denticulate to coarsely dentate-serrate, apices acute, faces puberulent (hairs minute) and stipitate-glandular. Heads 1–3 (–5). Involucres usually narrowly turbinate, rarely narrowly campanulate. Phyllaries 9–20, linear to narrowly lanceolate. Ray-florets 8–16, yellow. Disc-florets: corollas yellow; anthers yellow. Cypselae brown to black, 5–7 mm, sparsely to moderately pilose and stipitate-glandular; pappi stramineous to tawny, bristles subplumose. 2n = 57, 76.


Phenology: Flowering Jul–Sep.
Habitat: Moist meadows and conifer forests, stream banks, late snow-melt areas, montane to subalpine
Elevation: 200–3600 m

Distribution

V21-932-distribution-map.gif

Alta., B.C., Yukon, Alaska, Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Arnica ovata"
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 +
Greene +
decurrent +
compound +  and simple +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
broadly deltate;ovate +
2cm;6cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
connate +  and distinct +
Sticky leaf arnica +
stipitate-glandular +  and hairy +
brown +  and black +
stipitate-glandular +  and pilose +
obovoid-cylindric +, fusiform +  and conic +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, B.C. +, Yukon +, Alaska +, Calif. +, Colo. +, Idaho +, Mont. +, Oreg. +, Utah +, Wash. +  and Wyo. +
200–3600 m +
stipitate-glandular +  and puberulent +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Moist meadows and conifer forests, stream banks, late snow-melt areas, montane to subalpine +
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 +
irregularly denticulate +  and coarsely dentate-serrate +
2-carpellate +
subplumose +  and barbellate +
stramineous +  and tawny +
persistent +
10 +  and 50 +
aristate +
Flowering Jul–Sep. +
9 +  and 20 +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
distinct +
4 +  and 20 +
exalbuminous +
branched +  and simple +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Arnica diversifolia +  and Arnica latifolia var. viscidula +
Arnica ovata +
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 />) +