Nasturtium botanical study. Lithograph by M. P. Verneuil with pochoir (stencil) handcoloring from Eugene Grasset's Plants and their Application to Ornament, Paris, 1897. Eugene Grasset (1841-1917) was a Swiss artist whose innovative designs inspired the art nouveau movement at the end of the 19th century. [https://www.superstock.com/stock-photos-images/1895-11209276]