This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
The Cactaceae Plate XXVII . BRITTON AND ROSE Eaton dfl Upper part of fruiting joint of Opuntia sclutmannii Flowering joint of Opuntia vulgaris Flower of Opuntia sclmmannii Flowering joint of Opuntia stricta All natural size Plate XXVII Illustration biodiversitylibrary org title Britton Nathaniel Lord Rose NameFound