Eucephalus engelmannii

(Engelmann’s Aster)

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Eucephalus engelmannii, Newcastle-Buford Rd., White River Plateau, Garfield Co. 6193

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Eucephalus engelmannii, Newcastle-Buford Rd., White River Plateau, Garfield Co. 6180

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Eucephalus engelmannii, Vaughn Lake, Routt National Forest, Rio Blanco Co. 2117

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Eucephalus engelmannii, Newcastle-Buford Rd., White River Plateau, Garfield Co. 6183

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Eucephalus engelmannii, Eaglesmere Trail, Summit Co. 2909

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Upper leaf surface, Eucephalus engelmannii, Vaughn Lake, Routt NF, Rio Blanco Co. 2143

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Lowerer leaf surface, Eucephalus engelmannii, Vaughn Lake, Routt NF, Rio Blanco Co. 2140

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Eucephalus engelmannii, Newcastle-Buford Rd., White River Plateau, Garfield Co. 6184

Scientific Name Eucephalus engelmannii USDA PLANTS Symbol EUEN
Common Name Engelmann's Aster ITIS Taxonomic Serial No. 21167
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Montane and subalpine (7500 to 11500 ft.); meadows and open conifer and aspen forests.
Plant: Erect perennial 2 to 5 feet tall; rigid, leafy stems branched near top.
Leaves: Alternate, sessile stem leaves, elliptic to lanceolate, about 4 inches long; upper leaf surface smooth, lower may be somewhat glandular.
Inflorescence: Clusters of several large aster-like composite heads up to ~2-1/2 inches across; 8 to 15 relatively thin, white or pale pink rays; yellow disk florets; involucre with 4 to 6 rows of phyllaries of odd lengths, curved and reddish at tips.
Bloom Period: July to September.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G. K. Guennel, American Southwest and SEINet.
BONAP Distribution Map

Colorado Status:
Native

© Tom Lebsack 2022

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County