Wednesday, October 19, 2016

Arnica chamissonis (Meadow Arnica, Chamisso Arnica)

7/8/16 Pastures off Twin Lakes Road, Bridgeport, Eastern Sierra, Mono County, CA

7/5/16 Riparian area, Parker Lake Road off June Lake Loop (SR 158), 
Eastern Sierra, Mono County, CA


COMMON NAME: Meadow Arnica, Chamisso Arnica

SPECIES: Arnica chamissonis

FAMILY: Asteraceae (Sunflower Family)

LIFE LIST DATE: 7/5/2016

LOCATION: Riparian area, Parker Lake Road (Parker Bench, north of Grant Lake), off June Lake Loop (SR 158), Eastern Sierra, Mono County, CA


Treatment from The Jepson Manual (1993):

Plant 3–8 dm, ± hairy, generally glandular upward

Stem 1, branched above

Leaves: cauline 5–10 pairs, sessile or short-petioled, 5–20(30) cm, blade (ob)lanceolate, (sub)entire, upper ± reduced

Inflorescence: heads radiate, 5–10; involucre 8–15 mm, bell-shaped; phyllaries ± obtuse, inner face generally hair-tufted near tip

Ray flowers generally 13; ligules 1–2 cm

Fruit 4–5 mm, ± glabrous to short-hairy, glandular; pappus short-barbed or weakly subplumose, dirty white to straw-colored

Ecology: Damp meadows, rocky places, coniferous forest

Elevation: 1800–3500 m.  

Bioregional distribution: Klamath Ranges, Cascade Range, Sierra Nevada, San Bernardino Mountains, Warner Mountains, n East of Sierra Nevada, White and Inyo Mountains 

Distribution outside California: to British Columbia, Montana, New Mexico

Flowering time: Jul–Aug

Horticultural information: IRR, SHD: 1, 2, 3, 4, 5, 6, 7, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.

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