Grindelia squarrosa

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Scientific Name Grindelia squarrosa USDA PLANTS Symbol
Common Name Curlycup Gumweed ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower) SEINet
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Description Life zones and habitat: Foothills. Open areas, roadsides, disturbed areas.
Plant: Perennial or biennial, 4 to 40 inches tall; stems erect or occasionally lying on the ground, sometimes reddish or grayish.
Leaves: Alternate, oblong to oblanceolate, glandular surfaces, up to 2-3/4 inches long with regular or irregular-toothed edges.
Inflorescence: Composite flower heads in clusters, 1 to 2+ inches across with 25 to 40 yellow rays surrounding the center of 25 to 40 yellow disk florets; some subspecies without ray florets; phyllaries are recurved and fleshy.
References: Descr. adapted from SEINet, "Flora of Colorado" by Jennifer Ackerfield, and other sources.
Colorado Status

© Tom Lebsack 2018