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| 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
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Colorado Status: Native |
| Scientific Name | Tetraneuris acaulis var. caespitosa (Hymenoxys acaulis var. caespitosa) | USDA PLANTS Symbol | TEACC |
| Common Name | Caespitose 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: 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 short peduncles 1/4 to 3 inches; 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: June to August. References: "Flora of Colorado" by Jennifer Ackerfield, Flora of North America, and American Southwest. |
BONAP Distribution Map
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Colorado Status: Native |
| Scientific Name | Tetraneuris ivesiana (Hymenoxys ivesiana) | USDA PLANTS Symbol | TEIV |
| Common Name | Ives' Four-nerve Daisy, Perky Sue | ITIS Taxonomic Serial No. | 38512 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description |
Life zones and habitat: Plains to montane (4900 to 9500 ft.); dry open areas, sagebrush meadows, conifer woodlands. Plant: Short perennial 4 to 12 inches tall; somewhat branched from base, stems also may be branched. Leaves: Basal and lower stem leaves linear-oblanceolate; mid-stem blades becoming linear; edges entire, surfaces smooth or sparsely to moderately-covered with downy hairs and usually densely gland-dotted; blades tightly clustered, especially basal, and 2 to 7-1/2 inches long. Inflorescence: Composite flower heads with 7-10 yellow ray florets 3/8 to 3/4 inch long with two notches at tips; 80 to 150+ yellow disk florets; involucre with pointed, hairy, gland-dotted phyllaries; heads usually solitary on somewhat to densely hairy peduncles 2 to 8 inches long. Bloom Period: May to August. References: "Flora of Colorado" by Jennifer Ackerfield, American Southwest, SW Colorado Wildflowers and SEINet. |
BONAP Distribution Map
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Colorado Status: Native |
