|Scientific Name||Symphyotrichum spathulatum var. spathulatum (Aster spathulatus)||USDA PLANTS Symbol||SYSPS|
|Common Name||Western Mountain Aster||ITIS Taxonomic Serial No.||566344|
Life zones and habitat: Foothills to subalpine (6000 to 10500 ft.); moist areas along streams and in meadows and forest openings.
Plant: Erect perennial 8 to 24 inches tall with one to several stems that are smooth or sparsely covered with downy hairs, especially below the inflorescence.
Leaves: Lower stem leaves narrowly oblanceolate to lanceolate to elliptic, up to 6 inches long, smooth surfaces with hairs along edges; shorter upper stem leaves narrowly-elliptic, lanceolate or linear and sessile.
Inflorescence: Three to 10 composite flower heads in rounded cluster (cymose panicle), each 1 to 1-1/2 inches across with 15 to 50 rays, normally purple, violet or bluish; 30 to 80 yellow disk florets; phyllaries in 3–5 series, narrowly oblong or linear and unequal in length, surfaces smooth or somewhat downy-hairy.
Bloom period: July to October.
References: "Flora of Colorado" by Jennifer Ackerfield, Aster spathulatus in "The Alpine Flora of the Rocky Mountains" by Richard W. Scott, American Southwest, SW Colorado Wildflowers, and Flora of North America
|BONAP Distribution Map
© Tom Lebsack 2022
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County