Hemerocallis

1. Flowers orange.

H. fulva

1. Flowers yellow.

H. lilio-asphodelus

All species found in Hemerocallis

Hemerocallis fulvaORANGE DAY-LILY 
Hemerocallis lilio-asphodelusYELLOW DAY-LILY, LEMON-LILY 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 22, 2017. http://michiganflora.net/genus.aspx?id=Hemerocallis.