Choke*berry* (Aronia) blossoms 4/24/10 WWW4 in VA - McCormick Mill - Chokeberry grows as a bush or shrub, not a tree.

From Wikipedia:
"The chokeberries, genus Aronia, are often mistakenly called chokecherries. This naming confusion is easy to understand considering there is a cultivar of the chokecherry Prunus virginiana 'Melanocarpa' and a species of chokeberry named Aronia melanocarpa. In fact, the two plants are not close relatives within their subfamily Spiraeoideae."