Xylorhiza

Woodyasters
Xylorhiza tortifolia
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Astereae
Genus:	Xylorhiza Nutt.
Synonyms
Machaeranthera sect. Xylorhiza (Nutt.) Cronquist & D.D. Keck

Machaeranthera sect. Xylorhiza (Nutt.) Cronquist & D.D. Keck

Xylorhiza is a genus of flowering plants in the sunflower family, are known as woodyasters. These are daisylike wildflowers usually having blue to purple or white ray flowers with yellow centers of disc florets. Woodyasters are native to western North America.

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Wikipedia