Melocactus caloxanthus Hoxey, Gdaniec & Cinea in CactusWorld 39: 98. 2021

Holotype: Haiti, Dept. Sud-Est, Coastal limestone west of Anse-á-Pitres [a preserved specimen of a plant raised from seed in Gibraltar Botanic Gardens]), no date given, P. Hoxey & Gdaniec s.n. (GIB: GIB2021001)

Taxon for this name