Species Geigeria vigintisquamea

For Philipp Lorenz Geiger (1785–1836), German chemist, pharmacist and professor of pharmacy at the University of Heidelberg. In 1835 he discovered the poisonous alkaloid coniine in hemlock (Conium). He also isolated atropine, an alkaloid found in nightshade (Atropa belladona), jimsonweed (Datura stramonium) and mandrake (Mandragora officinarum), and the related alkaloids aconatine, daturine, hyoscyamine and atropine. From 1824–1836 he edited the Magazin der Pharmazie. His major works were the Pharmaco-poeia Universalis and his Handbuch der Pharmacie.