Grindelia squarrosa var. squarrosa
(Curlycup Gumweed)
Grindelia squarrosa var. squarrosa, Newcastle-Buford Rd., Garfield Co. 6253
Grindelia squarrosa var. squarrosa, Newcastle-Buford Rd., Garfield Co. 6265
Grindelia squarrosa var. squarrosa, Newcastle-Buford Rd., Garfield Co. 6270
| Scientific Name | Grindelia squarrosa var. squarrosa | USDA PLANTS Symbol | GRSQ |
| Common Name | Curlycup Gumweed | ITIS Taxonomic Serial No. | 37472 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description |
Life zones and habitat: Plains and foothills (3500 to 8500 ft.); dry soils in open areas, roadsides, disturbed sites. Plant: Perennial or biennial, 4 to 40 inches tall; stems erect or occasionally lying on the ground; usually whitish-green, sometimes reddish or grayish, and smooth. Leaves: Alternate, oblong to oblanceolate, clasping, glandular surfaces, 5/8 to 2-3/4 inches long; teeth along margins are rather evenly-spaced, crenulate-serrate, short, rounded and gland-tipped. Inflorescence: Composite flower heads in clusters, 1 to 2+ inches across with 25 to 40 yellow rays (or sometimes, none) surrounding the center of 25 to 40 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, American Southwest and SEINet. |
BONAP Distribution Map
Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2024
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains