Weingartia ambigua (Hildm. ex K.Schum.) Backeb. in Cact. Succ. J. (Los Angeles) 23: 86. 1951
Weingartia ambigua in Cact. Succ. J. (Los Angeles) 23: 86. 1951
is new combination for Echinocactus ambiguus, Gesamtbeschr. Kakt.: 311. 1897–1899
Weingartia ambigua in Cact. Succ. J. (Los Angeles) 23: 86. 1951
Taxon for this name