Echinomastus laui G.Frank & Zecher in Cact. Succ. J. (Los Angeles) 50: 188. 1978
Echinomastus laui in Cact. Succ. J. (Los Angeles) 50: 188. 1978
is basionym for Echinomastus unguispinus var. laui in Cact. Succ. J. (Los Angeles) 51: 124. 1979
is basionym for Echinomastus unguispinus subsp. laui, Guía Identific. Cact. Amenazadas México: Echinom/un ssp. laui. 1997 ["1998"]