Portrait of a Cactus Collector Jean-Léon Gérôme (1824-1904)

The picture has something of this: people, portrait, man, wear, outerwear, neckwear, facial hair, indoors, sit, outfit, furniture, facial expression, two, music, menswear, jacket, administration, leader.
Perhaps it’s a portrait of a man in a black suit and white shirt sitting in a chair with a dog in his lap and a cactus in front of him.