Cactus caesius (H.L.Wendl.) Britton & Rose in Bull. Dept. Agric. Trinidad & Tobago 19: 86. 1921
Cactus caesius in Bull. Dept. Agric. Trinidad & Tobago 19: 86. 1921
is new combination for Melocactus caesius, Monogr. Melocacti: 104. 1840
Cactus caesius in Bull. Dept. Agric. Trinidad & Tobago 19: 86. 1921
Taxon for this name