The illustrations for this RHS address book are taken from possibly the finest of early colour-printed books and the first botanical work to be published in colour on continental Europe. The Phytanthoza Iconographia was complied by Johann Wilhelm Weinmann (1683-1741), a wealthy apothecary and collector of botanical art from Regensburg, Germany. Although none of the artists is named, the most famous artist working for Weinmann was Georg Dionysius Ehret (1708-1770), one of the greatest botanical illustrators, and some of the plates in the Phytanthoza may be based on his drawings. A selection of these coloured mezzotint engravings illustrates this address book.