Blue flowered castor oil plant; Ricinus communis. Handcolored copperplate engraving of a botanical illustration by J. Schaly from G. T. Wilhelm's 鈥楿nterhaltungen aus der Naturgeschichte' (Encyclopedia of Natural History); Vienna; 1816. Gottlieb Tobias Wilhelm (1758-1811) was a Bavarian clergyman and naturalist in Augsburg; where the first edition was published.