References
Sammons, N.J. 2011. Morphometric analysis and monograph of Monarda subgenus Cheilyctis (Lamiaceae). Ph.D. dissertation, Michigan State Univ. Google Scholar
Sammons, N.J. 2011. Morphometric analysis and monograph of Monarda subgenus Cheilyctis (Lamiaceae). Ph.D. dissertation, Michigan State Univ. Google Scholar