taught by his father ; later by Johan Martin Preisler ; Academy of Copenhagen
Denmark
Pehr Forskal (1732-1763) ; Johann Friedrich Brandt (1802-1879): Giftgewächse (1838) ; Morten Thrane Brünnich (1737-1827) ; Christian Gottfried Ehrenberg (1795-1876) ; Heinrich Rockstroh (1770- c.1837) ; Friedrich Philipp Wilmsen (1770-1831) ;