UW Burke Herbarium species comparison

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Eurybia macrophylla

Eurybia sibirica

arctic aster
Habit Rhizomatous perennial usually about 1 dm. tall; the stem and lower surfaces of the leaves sparsely to copiously short-hairy.
Leaves

Leaves firm, entire or with a few short teeth, mostly sessile, 2.5-8 cm. long and 4-25 mm. wide, the lowermost reduced.
Flowers

Heads solitary, or few in a compact inflorescence;

involucre 6-9 mm. high, the bracts imbricate in several series, loose, papery below, green-tipped and purple-margined;

rays 12-23, purple, 8-12 mm. long;

pappus bristles of various lengths; disk corollas yellow, 5.5-7.6 mm. long, the tube about equal to the slender limb.
Fruits

Achene

Eurybia macrophylla

Eurybia sibirica
Flowering time July-September
Habitat Rocky outcroppings, open slopes, and meadows in the subalpine and alpine.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring west of the Cascades crest in Washington; Alaska to Washington, east to Northwest Territory, Nunavut, Alberta, Idaho, and Montana.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Review Group 1 in Washington (WANHP)
Sibling taxa
E. conspicua, E. integrifolia, E. merita, E. radulina, E. sibirica
E. conspicua, E. integrifolia, E. merita, E. radulina
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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