Synonymy in Peperomia Berteroana (Piperaceae) Results in Biological Disjunction Between Pacific and Atlantic Oceans

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Abstract
Placing Peperomia berteroana of the Juan Fernandez Islands in the Pacific Ocean in synonymy with P. tristanensis of Tristan da Cunha in the Atlantic Ocean results in a species with a wide geographical disjunction of more than 5000 km. Morphological data indicate that these taxa are best treated as subspecies (P. berteroana subsp. berteroana and P. berteroana subsp. tristanensis).