1. Stem with only curved or curled hairs (and tiny glandular ones).

G. ladanum

1. Stem with stiff, straight, ± reflexed hairs.

G. tetrahit

All species found in Galeopsis

Galeopsis ladanumRED HEMP NETTLE 
Galeopsis tetrahitHEMP-NETTLE 


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 17, 2018.