(detail of a lithograph entitled: Diphogena Iris, Gould)

John Gould was an ornithologist/naturalist/lithographer of the early 1800s. He - as did other famed naturalists of the time (such as Charles Darwin) - collected specimans of plants and animals from around the world. An article in Wikipedia suggests he had specimans of 320 different species of hummingbird alone and that he exhibited these at the Great Exhibition of 1851. 'The Great Exhibition of the Works of Industry of all Nations' is known as one of the first world's fairs. It took place at Hyde Park in London, England.

I am unable to access information via internet this evening on Diphogena irises.