Eriogonum arcuatum var. xanthum

(Ivy League Buckwheat)

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Eriogonum arcuatum var. xanthum, Herman Lake Trail, Clear Creek Co. 6074

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Eriogonum arcuatum var. xanthum, Herman Lake Trail, Clear Creek Co. 6071

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Eriogonum arcuatum var. xanthum, Loveland Pass, Clear Creek Co. 1579

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Eriogonum arcuatum var. xanthum, Loveland Pass, Clear Creek Co. 1583

Scientific Name Eriogonum arcuatum var. xanthum (Eriogonum jamesii var. xanthum, Eriogonum flavum var. xanthum) USDA PLANTS Symbol ERFL4
Common Name Ivy League Buckwheat ITIS Taxonomic Serial No. 823877
Family Polygonaceae (Buckwheat) SEINet
Reference
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Description Life zones and habitat: Montane to alpine (9500 to 13500); sandy, gravelly soils, in grasslands, sagebrush meadow, rocky or talus slopes, conifer woodlands and tundra.
Plant: Usually mat-forming, short perennial with stout hairy stems; up to 3 inches tall.
Leaves: Basal, oblanceolate to elliptic leaves, 1/4 to 1-1/4 inches long and 1/4 to 5/8-inch wide; grayish lower surface covered with short, matted hairs (tomentose), greenish upper has tufts of woolly hairs (floccose).
Inflorescence: Single clusters of tiny golden yellow flowers (not umbels) atop unbranched stems; each flower less than 1/4-inch across with densely hairy tepals; protruding stamens.
Bloom Period: July to September.
References: "Flora of Colorado" by Jennifer Ackerfield and Flora of North America.
BONAP Distribution Map

Map Color Key
Colorado Status:
Native

© Tom Lebsack 2022

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