Aronia

1. Fruits very dark purple to black when fully ripe, the larger mostly 8–11 mm in diameter; larger inflorescences mostly 6–12-flowered.

A. prunifolia

1. Fruits bright red when fully ripe; mostly  4–7 mm in diameter; larger inflorescences mosly 10–18-flowered.

A. arbutifolia

All species found in Aronia

Aronia arbutifoliaRED-FRUITED CHOKEBERRY 
Aronia prunifoliaCHOKEBERRY 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 14, 2018. https://michiganflora.net/genus.aspx?id=Aronia.