Machaeranthera tanacetifolia
(Tansey-leaf Aster)
Machaeranthera tanacetifolia, Pawnee Buttes, Weld Co. 7346
Machaeranthera tanacetifolia, Pawnee Buttes, Weld Co. 7350
Leaves, Machaeranthera tanacetifolia, Pawnee Buttes, Weld Co. 7348
| Scientific Name | Machaeranthera tanacetifolia | USDA PLANTS Symbol | MATA2 |
| Common Name | Tanseyleaf Aster, Tahoka Daisy | ITIS Taxonomic Serial No. | 38013 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description | Life zones and habitat: Plains and Foothills (3400 to 7000 ft.); sandy, rocky soils. Plant: Low, upright to widely sprawling annual or biennial, 2 to 40 inches tall, densely leafy. Leaves: Alternate, deeply twice-pinnatisect; 2 to 5 inches long overall; spine-tipped and sticky with small hairs; upper leaves less divided. Inflorescence: Solitary flower heads 1 to 2-1/2 inches across on peduncles up to 1-1/4 inches long; many leafy, recurved phyllaries with sticky hairs; blue-to-purple, narrow rays and yellow disk flowers. Bloom Period: May to September. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Flora of Colorado" by Jennifer Ackerfield 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