What is the de Candolle system?
The De Candolle system is a system of plant taxonomy by French (Swiss) botanist Augustin Pyramus de Candolle (1778−1841). 2.3.2 Subclassis II. CALYCIFLORÆ [Parts II – VII] 2.3.3 Subclassis III. COROLLIFLORÆ [Parts VIII – XIII (1)] 2.3.4 Subclassis IV. MONOCHLAMYDEÆ [Parts XIII (2) – XVI]
What happened to Augustin de Candolle?
Augustin de Candolle’s great-grandson, Richard Émile Augustin de Candolle, was also a botanist. Augustin de Candolle died on 9 September 1841 in Geneva, after being sick for many years. That same year, he was elected as a member of the American Philosophical Society.
How did de Candolle get his start in botany?
His botanical career formally began with the help of René Louiche Desfontaines, who recommended de Candolle for work in the herbarium of Charles Louis L’Héritier de Brutelle during the summer of 1798.
What was the first book De Candolle wrote?
De Candolle’s first books, Plantarum historia succulentarum (4 vols., 1799) and Astragalogia (1802), brought him to the notice of Georges Cuvier and Jean-Baptiste Lamarck. de Candolle, with Cuvier’s approval, acted as deputy at the Collège de France in 1802.
What did Alphonse de Candolle do?
Alphonse Pyrame de Candolle, Swiss botanist who introduced new methods of investigation and analysis to phytogeography, a branch of biology that deals with the geographic distribution of plants. Candolle sought to establish centers of plant origins by using historical and archaeological as well as botanical data.
How did de Candolle discover the biological clock?
During his work with plants, de Candolle noticed that plant leaf movements follow a near-24-hour cycle in constant light, suggesting that an internal biological clock exists. Though many scientists doubted de Candolle’s findings, experiments over a century later demonstrated that ″the internal biological clock″ indeed exists.