caption: The image shows an old book with a black and white image of a man in a suit and tie, with the title "Histoire des Plantes Veneuses de la Suisse" written on the paper. The man in the image appears to be looking off into the distance, with a thoughtful expression on his face. He is wearing a navy blue suit with a white shirt and a red tie, and his hands are clasped in front of him. The background of the image is a light blue sky with white clouds.