He also completed works which were initiated by Reinwardt and German botanist Franz Wilhelm Junghuhn (1809–1864), and was the author of noteworthy treatises on cinchona (1855), vanilla (1856) and camphor (1856).
Willem de Kooning | Willem Dafoe | Willem Blaeu | Willem Janszoon | Willem Mengelberg | Willem Roggeman | Toomas Hendrik Ilves | Herman Willem Daendels | Hendrik Tollens | Hendrik Lorentz | Hendrik Conscience | Willem Drees | Willem-Alexander of the Netherlands | Hendrik Casimir | Willem van Otterloo | Willem Schouten | Willem Kloos | Willem Klein | Willem II (football club) | Willem II | Willem de Vlamingh | Willem Buiter | John Willem Gran | Jan Hendrik van Kinsbergen | Hendrik Verwoerd | Hendrik Van Riessen | Hendrik Lenstra | Hendrik Andriessen | Willem Verstegen | Willem van Hoogstraten |