For Mesosphaerum
Harley, R.M., and J.F.B. Pastore. 2012. A generic revision and new combinations in the Hyptidinae (Lamiaceae), based on molecular and morphological evidence. Phytotaxa 58: 1-55.
Pastore, J.F.B., G.M. Antar, A.d.S. Soares, F. Forest, and R.M. Harley. 2021. A new and expanded phylogenetic analysis of Hyptidinae (Ocimeae-Lamiaceae). Syst. Bot. 46: 1086-1094.
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