Physic nut; Jatropha curcas. Handcoloured copperplate botanical engraving from Johannes Zorn's 鈥楢fbeelding der Artseny-Gewassen;' Jan Christiaan Sepp; Amsterdam; 1796. Zorn first published his illustrated medical botany in Nurnberg in 1780 with 500 plates; and a Dutch edition followed in 1796 published by J.C. Sepp with an additional 100 plates. Zorn (1739-1799) was a German pharmacist and botanist who collected medical plants from all over Europe for his 鈥業cones plantarum medicinalium' for apothecaries and doctors.