Polygonatum

1. Leaves completely glabrous.

P. biflorum

1. Leaves finely pubescent on the veins beneath.

P. pubescens

All species found in Polygonatum

Polygonatum biflorumSOLOMON-SEAL 
Polygonatum pubescensDOWNY SOLOMON SEAL 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 28, 2017. http://michiganflora.net/genus.aspx?id=Polygonatum.