Chun-Lei Xiang; Fei Zhao; Philip D. Cantino; Bryan T. Drew; Bo Li; En-De Liu; Douglas E. Soltis; Pamela S. Soltis et al. (2018). “Molecular systematics of Caryopteris (Lamiaceae) and its allies with reference to the molecular phylogeny of subfamily Ajugoideae”. Taxon67 (2): 376–394. doi:10.12705/672.7.
Govaerts, R. et al. (2020). World Checklist of Lamiaceae. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://wcsp.science.kew.org/ Retrieved 11 January 2020