]> [Botanist: née Johann Georg Metzler; German mineralogist; professor of mineralogy in Dublin; pioneering research into the geology and mineralogy of Greenland] Eponymy: Campanula gieseckeana Vest Botany Giesecke, Charles Lewis Giesecke, Charles Lewis C. L. Giesecke Giesecke, Karl Ludwig Metzler, Johann Georg Charles Lewis Giesecke Giesecke, Carl Ludwig 1761 1833