Tonestus lyallii
| Tonestus lyallii | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Astereae |
| Genus: | Tonestus |
| Species: | T. lyallii |
| Binomial name | |
| Tonestus lyallii (A.Gray) A.Nelson | |
| Synonyms | |
|
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
- ↑ "Tonestus lyallii". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 11 December 2015.