Tonestus lyallii
| Tonestus lyallii | |
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| Species: | T. lyallii
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| Binomial name | |
| Tonestus lyallii | |
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Haplopappus lyallii | |
Tonestus lyallii is a species of flowering plant in the aster family known by the common names Lyall's goldenweed,[1] Lyall's serpentweed and Lyall's tonestus. It is native to western North America, particularly in the Rocky Mountains and the mountain ranges of the Pacific Northwest with scattered occurrences between. It is a perennial herb growing in clumps or short bunches not more than about 15 centimeters tall, the stem branching from a tough caudex. The leaves are smooth-edged and linear or lance-shaped, the largest at the base of the plant reaching up to about 8 centimeters long. The inflorescence is a single flower head or a pair of heads each about a centimeter wide with green or red phyllaries. The head bears at least 10 or 11 bright yellow ray florets around a center containing many tubular disc florets.
References
- ^ USDA, NRCS (n.d.). "Tonestus lyallii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 11 December 2015.
External links
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