Grindelia subalpina

(Subalpine Gumweed)

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Grindelia subalpina, George Stadler Rd., Rist Canyon, Larimer Co. 2275

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Grindelia subalpina, George Stadler Rd., Rist Canyon, Larimer Co. 2285

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Grindelia subalpina, George Stadler Rd., Rist Canyon, Larimer Co. 2280

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Grindelia subalpina, George Stadler Rd., Rist Canyon, Larimer Co. 2287

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Grindelia subalpina, George Stadler Rd., Rist Canyon, Larimer Co. 2290

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Grindelia subalpina, George Stadler Rd., Rist Canyon, Larimer Co. 2282

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Grindelia subalpina, George Stadler Rd., Rist Canyon, Larimer Co. 2299

Scientific Name Grindelia subalpina USDA PLANTS Symbol GRSU
Common Name Subalpine Gumweed ITIS Taxonomic Serial No. 37473
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills and montane (5500 to 9500 ft.); dry sandy or gravelly soils in open areas, roadsides, disturbed sites.
Plant: Perennial or biennial with erect stems 6 to 16 inches tall, usually reddish, sometimes yellowish, and smooth.
Leaves: Alternate, oblong to oblanceolate, clasping, glandular surfaces, 5/8 to 2-3/8 inches long; teeth along margins are unevenly-spaced, coarsely serrate or dentate with teeth coming to a sharp point (apiculate).
Inflorescence: Composite flower heads in clusters, about 1 to 2+ inches across with 18 to 27 yellow rays surrounding the center of numerous yellow disk florets; 5 to 6 layers of sticky phyllaries below are fleshy with tips usually strongly recurved or hooked to nearly straight.
Bloom Period: June to October.
References: "Flora of Colorado" by Jennifer Ackerfield and Flora of North America and American Southwest.
BONAP Distribution Map


Map Color Key
Colorado Status:
Native

© Tom Lebsack 2024

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