1. Calyx divided less than halfway, with a terete base; petals white; leaf blades deeply palmately lobed; carpels (8–) 10.
1. Calyx divided more than halfway, with an angled base; petals yellow; leaf blades ovate-elliptic to oblong, not lobed; carpels ca. 5.
All species found in Sida
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 24, 2018. https://www.michiganflora.net/genus.aspx?id=Sida.