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The Cactaceae Plate VIII . BRITTON AND ROSE VOL Eaton del Top of flowering stem of Cephalocerms brooksianus Top of stem of Cephalocereus phaeacanthus Top of stem of Cepkalocereus catingicola Flowering branch of Leptocereus assurgens Natural size Plate VIII Illustration biodiversitylibrary org title Britton Nathaniel