1. Ray flowers present, white; disk corollas 5-lobed; plant aromatic when bruised.
1. Ray flowers none; disk corollas 4-lobed; bruised plant with pleasant fruity (pineapple) odor.
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 17, 2025
https://mifloradev.lsa.umich.edu/flora-demo/#/genus/Matricaria