1. Plant not stoloniferous (but with rhizome); stem and leaves ± equally pubescent on all surfaces.
1. Plant strongly stoloniferous; stem glabrous or if pubescent, the hairs mostly on opposite sides of the stem (alternating on each internode); leaves glabrous or nearly so, especially beneath.
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 16, 2025
https://mifloradev.lsa.umich.edu/flora-demo/#/genus/Ajuga