Tetraneuris acaulis var. acaulis

(Stemless Four-nerve Daisy)

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Tetraneuris acaulis var. acaulis, Levsa Canyon Trail, Trinidad Lake State Park, Las Animas Co. 8080

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Tetraneuris acaulis var. acaulis, Pawnee Buttes, Weld Co. 7544

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Tetraneuris acaulis var. acaulis, Pawnee Buttes, Weld Co. 7547

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Tetraneuris acaulis var. acaulis, Levsa Canyon Trail, Trinidad Lake State Park, Las Animas Co. 8090

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Tetraneuris acaulis var. acaulis, Pawnee Buttes, Weld Co. 7545

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Tetraneuris acaulis var. acaulis, Pawnee Buttes, Weld Co. 7551

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Tetraneuris acaulis var. acaulis, Levsa Canyon Trail, Trinidad Lake State Park, Las Animas Co. 8076

Scientific Name Tetraneuris acaulis var. acaulis (Hymenoxys acaulis) USDA PLANTS Symbol TEACA2
Common Name Stemless Four-nerve Daisy, Stemless Hymenoxys, Goldflower ITIS Taxonomic Serial No. 530623
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Plains to montane (3500 to 9500 ft.); dry soils in grasslands, roadsides, hillsides and other open areas.
Plant: Short perennial 4 to 8 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 3 to 8 inches long; 8 to 15 yellow rays with three notches at tips; yellow centers with 25 to 200 disk florets; phyllaries usually densely woolly-hairy.
Bloom Period: May to July.
References: "Flora of Colorado" by Jennifer Ackerfield, Flora of North America, and American Southwest.
BONAP Distribution Map

Map Color Key
Colorado Status:
Native

© Tom Lebsack 2025

Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains

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