ASTERACEAE

Conoclinium coelestinum

Common Name:  Mistflower, Blue Boneset

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Eupatorium coelestinum heads.jpg (34264 bytes)
heads--notice the sky-blue color of the heads:  this is where the epithet coelestinum is derived heads closeup--which kind of flowers are present here?  Disk, ray, or both?
 
leaves--these leaves are opposite.  What is the leaf shape?   What is the leaf margin?  The light green color of the leaves is typical.