Hammeria in Cact. Succ. J. (Los Angeles) 70(4): 204. 1998 sec. Hartmann (2001b)
A small genus consisting of only three species. The two species included in the molecular study by Klak & al. (2013) were not resolved as sisters. However, they were shown to group with other small genera such as Braunsia and Esterhuysenia in the Antimima clade (Klak & al. 2013).