1. Flowers white or cream-colored, ca. 2.5–4.5 mm long; plants at full anthesis (1.4–) 2–4 dm tall; flowering stem normally with 2 opposite leaves (other leaves basal); all leaves acute.
1. Flowers greenish yellow or even reddish, ca. 4.5–6.5 mm long; plants less than 1.5 (–2.3) dm tall; flowering stem naked or with at most 1 small leaf; all leaves obtuse or rounded.
All species found in Mitella
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 22, 2019. https://www.michiganflora.net/genus.aspx?id=Mitella.