Tetraneuris acaulis var.caespitosa

(Stemless Four-nerve Daisy)

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Tetraneuris acaulis var. caespitosa, Hoosier Pass, Summit Co. 5438

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Tetraneuris acaulis var. caespitosa, Hoosier Pass, Summit Co. 5476

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Tetraneuris acaulis var. caespitosa, Hoosier Pass, Summit Co. 5482

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Tetraneuris acaulis var. caespitosa, Hoosier Pass, Summit Co. 5438

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Tetraneuris acaulis var. caespitosa, Hoosier Pass, Summit Co. 5480

Scientific Name Tetraneuris acaulis var. caespitosa (Hymenoxys acaulis) USDA PLANTS Symbol TEACC
Common Name Stemless Four-nerve Daisy, Stemless Hymenoxys, Goldflower ITIS Taxonomic Serial No. 530625
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Subalpine and alpine (10000 to 14000 ft.); tundra, rocky, gravelly areas, alpine meadows above timberline.
Plant: Very short perennial 1 to 3 inches tall; 1 to many unbranched, reddish-green, leafless stems (peduncles) with short hairs.
Leaves: Thick, hairy, basal, spatulate or oblanceolate to linear-oblanceolate, may be dotted with glands; 1 to 2 inches long.
Inflorescence: Composite flower heads less than 2 inches across borne singly atop peduncles; 8 to 15 yellow rays with three notches at tips; yellow centers with 25 to 200 disk florets; phyllaries usually densely hairy.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield, Flora of North America, and American Southwest.
Notes: The plants above appear to be var. caespitosa because of the county and altitude at which they are located (in Summit County at 12000 ft.) and the hairiness of the leaves.
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