Anne Casimir Pyramus (or Pyrame) de Candolle (20 February 1836, Geneva – 3 October 1918,

Chêne-Bougeries Chêne-Bougeries is a municipality in the Canton of Geneva, Switzerland. History Chêne-Bougeries is first mentioned in 1270 as ''Quercus''. In 1801 it was mentioned as ''Chêne-les-Bougeries''. Chêne-Bougeries was inhabited for most of its his ...

) was a Swiss

botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek w ...

, the son of

Alphonse Pyramus de Candolle Alphonse Louis Pierre Pyramus (or Pyrame) de Candolle (28 October 18064 April 1893) was a French-Swiss botanist, the son of the Swiss botanist Augustin Pyramus de Candolle. Biography De Candolle, son of Augustin Pyramus de Candolle, first devot ...

Early life and education

He studied chemistry, physics and mathematics in Paris (1853–57), later spending time in England, where he met with

Miles Berkeley Miles Joseph Berkeley (1 April 1803 – 30 July 1889) was an English cryptogamist and clergyman, and one of the founders of the science of plant pathology. Life Berkeley was born at Biggin Hall, Benefield, Northamptonshire, and educated at ...

. In 1859 he visited

Algeria ) , image_map = Algeria (centered orthographic projection).svg , map_caption = , image_map2 = , capital = Algiers , coordinates = , largest_city = capital , relig ...

, and during the following year, continued his education in Berlin. Afterwards, he returned to Geneva as an assistant and colleague to his father. He married Anna-Mathilde Marcet and they had four children: Raymond Charles de Candolle (1864–1935), Florence Pauline Lucienne de Candolle (1865–1943),

Richard Émile Augustin de Candolle Richard Émile Augustin de Candolle (8 December 1868, Walton-on-Thames – 4 May 1920, Vallon) was a Swiss botanist and was British consul to the Canton of Geneva between 1912 and 1918. Early life and education Richard Émile Augustin de Ca ...

(1868–1920) and Reyne Marguerite de Candolle (1876–1958).

Career

In the field of

plant systematics The history of plant systematics—the biological classification of plants—stretches from the work of ancient Greek to modern evolutionary biologists. As a field of science, plant systematics came into being only slowly, early plant lo ...

, he used criteria such as stem structure and/or

leaf arrangement In botany, phyllotaxis () or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature. Leaf arrangement The basic arrangements of leaves on a stem are opposite and alternat ...

as a basis of anatomical criteria. As a

plant physiologist Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants. Closely related fields include plant morphology (structure of plants), plant ecology (interactions with the environment), phytochemistry (bio ...

, he conducted investigations on the movement of leaves, the curling of tendrils, the effect of low temperatures on

seed germination Germination is the process by which an organism grows from a seed or spore. The term is applied to the sprouting of a seedling from a seed of an angiosperm or gymnosperm, the growth of a sporeling from a spore, such as the spores of fungi, fern ...

and the influence of ultraviolet radiation on flower formation. He was particularly interested in the botanical family

Piperaceae The Piperaceae (), also known as the pepper family, are a large family of flowering plants. The group contains roughly 3,600 currently accepted species in 5 genera. The vast majority of species can be found within the two main genera: '' Piper' ...

. He continued work on ', a project begun by his father, and was co-editor of the ' (Geneva). He held honorary degrees (

doctor honoris causa An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or ''ad hono ...

) from the universities of Rostock, Geneva,

Aberdeen Aberdeen (; sco, Aiberdeen ; gd, Obar Dheathain ; la, Aberdonia) is a city in North East Scotland, and is the third most populous city in the country. Aberdeen is one of Scotland's 32 local government council areas (as Aberdeen City), and ...

and

Uppsala Uppsala (, or all ending in , ; archaically spelled ''Upsala'') is the county seat of Uppsala County and the fourth-largest city in Sweden, after Stockholm, Gothenburg, and Malmö. It had 177,074 inhabitants in 2019. Located north of the capi ...

References

External links

* {{DEFAULTSORT:de Candolle, Casimir Pyramus Anne 20th-century Swiss botanists Plant physiologists 1836 births 1918 deaths Scientists from Geneva 19th-century Swiss botanists