Anhalonium trigonum F.A.C.Weber in Bois, Dict. Hort.: 90. 1893
Anhalonium trigonum in Bois, Dict. Hort.: 90. 1893
is basionym for Ariocarpus trigonus in Bot. Jahrb. Syst. 24(5): 550. 1898
is basionym for Ariocarpus retusus subsp. trigonus in Haseltonia 5: 18. 1998