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Keywords from Image Description:
The Cactaceae Plate IX . BRITTON AND ROSE VOL Ill Ir vis Lophophora williamsii Ariocarpus retusus Plate IX Illustration biodiversitylibrary org title Britton Nathaniel Lord Rose NameFound Ariocarpus retusus NameConfirmed Ariocarpus retusus EOLID NameBankID NameFound Copiapoa NameConfirmed Copiapoa EOLID NameBankID