Distribution: Occurring in the Olympics and Cascades mountains in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Mountain meadows and rocky slopes, subalpine and alpine.
Flowers: July-September
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, beetles, wasps
Perennial from a short, woody, branching base and creeping rhizomes, the several stems erect, 3-15 cm. tall, the herbage covered with short, fine, stalked glands.
Leaves oblanceolate to spatulate or oblong, the basal ones 1.5-7 cm. long and 4-12 mm. wide, the cauline leaves ample, only slightly reduced.
Heads solitary, cup-shaped; involucre 6-12 mm. high, its bracts sub-equal, green or somewhat papery, often purplish; rays 13-35, 6-ll mm. long, yellow and pistillate; disk flowers numerous, yellow.
Achenes elongate.
PNW Herbaria: Specimen records of Tonestus lyallii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Tonestus lyallii checklist entry
OregonFlora: Tonestus lyallii information
E-Flora BC: Tonestus lyallii atlas page
CalPhotos: Tonestus lyallii photos