Naegeli, Karl Wilhelm von (1817-1891) Swiss botanist Naegeli (ne-ge-lee), the son of a physician from Kilchberg in Switzerland, began medical studies at Zurich but went on to study botany under Alphonse de CANDOLLE at Geneva. After graduating in 1840 he studied philosophy in Berlin but resumed his botanical studies in 1842, when he left for Jena to work with Matthias SCHLEIDEN.