Bräuchler, C. (2020).

A new combination and an updated identification key for Rhabdocaulon and the differences from Hoehnea (Lamiaceae, Nepetoideae, Mentheae, Menthinae)

. Phytotaxa, 446(2), 141–143. https://doi.org/10.11646/phytotaxa.446.2.8