As part of the revision of the genus Citharexylum for the projects “Flora of the Cuban Republic” and “Flora of the Greater Antilles”, conspecificity of C. spinosum and plants assigned by many authors to a different species, misnamed “C. fruticosum” (an illegitimate name), is demonstrated. Infraspecific classification of C. spinosum is critically reconsidered, resulting in five new combinations, three of them at a new rank.
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