Shepherdia

1. Leaves silvery with dense scales on upper surface; flowering with the leaves.

S. argentea

1. Leaves greenish on upper surface, essentially lacking scales; flowering before the leaves expand.

S. canadensis

All species found in Shepherdia

Shepherdia argenteaBUFFALO-BERRY 
Shepherdia canadensisSOAPBERRY 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 23, 2017. http://michiganflora.net/genus.aspx?id=Shepherdia.