UW Burke Herbarium species comparison

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Symphyotrichum spathulatum

Symphyotrichum fontinale

western aster, western mountain aster
Habit Fibrous-rooted perennial from a creeping rhizome, the stems 2-10 dm. tall.
Leaves

Leaves glabrous and entire, the lower ones oblanceolate and petiolate, the others narrower and sessile, 3-15 cm. long and 3-10 mm. wide.

Flowers

Heads 1-many in a flat-topped inflorescence;

involucre 5-7 mm. high, its bracts usually pointed, narrow, linear or linear-oblong, green to the base and minutely purple-tipped;

disk flowers numerous, yellow;

rays 20-50, blue or violet, 6-15 mm. long;

pappus of numerous capillary bristles.

Fruits

Achenes hairy.

Symphyotrichum spathulatum

Symphyotrichum fontinale
Flowering time July-September
Habitat Meadows and forest openings, from middle elevations to the subalpine.
Distribution
Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
S. ×amethystinum, S. ascendens, S. boreale, S. bracteolatum, S. campestre, S. chilense, S. ciliatum, S. ×columbianum, S. ericoides, S. foliaceum, S. frondosum, S. hallii, S. jessicae, S. laeve, S. lanceolatum, S. novae-angliae, S. pilosum, S. subspicatum
S. ×amethystinum, S. ascendens, S. boreale, S. bracteolatum, S. campestre, S. chilense, S. ciliatum, S. ×columbianum, S. ericoides, S. foliaceum, S. frondosum, S. hallii, S. jessicae, S. laeve, S. lanceolatum, S. novae-angliae, S. pilosum, S. spathulatum, S. subspicatum
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Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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