Tonestus lyallii

Tonestus lyallii is a species of flowering plant in the family Asteraceae 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.

Tonestus lyallii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Tonestus
Species:
T. lyallii
Binomial name
Tonestus lyallii
Synonyms

Haplopappus lyallii

References
  1. USDA, NRCS (n.d.). "Tonestus lyallii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 11 December 2015.


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