1. Leaves alternate; stems usually twining; flowers unisexual (or functionally so), the plants essentially dioecious.
1. Leaves opposite; stems erect or trailing but not twining; flowers bisexual.
All species found in Celastraceae
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. October 17, 2017. http://michiganflora.net/family.aspx?id=CELASTRACEAE.