Helianthus silphioides
| Helianthus silphioides | |
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H. silphioides
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| Binomial name | |
| Helianthus silphioides Nutt. 1841
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Helianthus silphioides is a North American species of sunflower known by the common name Rosinweed sunflower. It is native to the central United States, primarily in the Ozarks and the Tennessee Valley with additional populations north into Kentucky and Illinois and south as far as Louisiana and Alabama. [2]
Helianthus silphioides grows in open locations. It is an perennial herb up to 300 cm (10 feet) tall. Leaves are broadly egg-shaped. One plant usually produces 3-15 flower heads, each containing 8–13 yellow ray florets surrounding 75 or more red disc florets.[3]
References
External links
- photo of herbarium specimen at Missouri Botanical Garden, collected in Missouri in 1992
- Ozark Edge Wildflowers
- Missouri Plants
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