From 1910 to 1914, Britain's Ellen Willmott published The Genus Rosa, with illustrations by Alfred Parsons. Today, though dated in many details, it remains, with Redoute's Les Roses, the essential taking off point for research into rose species. Below is an example of Ellen Willmott's treatment of one species, her article on R. gigantea, the giant "Empress Rose" of India, Burma and southern China. Bred with R. chinensis, the result was the tea rose, and later the hybrid tea. As Graham Stuart Thomas pointed out in 1987, "certain it is that the great convoluted petals, inbred through countless generations of hybrid roses, gave rise to the long-petalled shapely buds of the Tea roses, which are so tantalizingly beautiful." (Graham Stuart Thomas, A Garden of Roses, p. 88).