XWavyleaf Thistle (Cirsium undulatum)X
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Wavyleaf Thistle -or- Gray Thistle -or- Plumed Thistle (Cirsium undulatum), Asteraceae (Aster/Sunflower)
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Plant location: Sighted in the Pawnee Butte National Grasslands on June 3, 2009.Plant -
Bloom season: May through September.Foliage -
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