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Keywords from Image Description:
The Cactaceae Plate . BRITTON AND ROSE VOL Ill PLATE pit Eaton del Top of flowering plant of Echinocereus engelmannii Flowering plant of Lobivia corbula Flowering plant of Lobivia pentlandii Flowering plant of Lobivia lateritia All natural size Jfonn Co Plate Illustration biodiversitylibrary org title Britton