Jacques Denys (Denis) Choisy (5 April 1799, Jussy – 26 November 1859,

Geneva , neighboring_municipalities= Carouge, Chêne-Bougeries, Cologny, Lancy, Grand-Saconnex, Pregny-Chambésy, Vernier, Veyrier , website = https://www.geneve.ch/ Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevr ...

) was a Swiss Protestant clergyman and botanist. He studied

theology Theology is the systematic study of the nature of the divine and, more broadly, of religious belief. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of analyzing the ...

, law, humanities and sciences at the ''Académie de Genéve''. In 1821 he became ordained as a minister, and during the following year, furthered his education in

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), ma ...

. During his stay in Paris, he was accepted as a member of the ''Société d'histoire naturelle''. Following his return to Geneva in 1824, he was named chair of rational philosophy at the Academy, a position he maintained until 1847.Bulletin de la Société Botanique de France: publication mensuelle ..., Volume 7
by Société Botanique de France As a student in Geneva, he came under the influence of

Augustin Pyramus de Candolle Augustin Pyramus (or Pyrame) de Candolle (, , ; 4 February 17789 September 1841) was a Swiss botanist. René Louiche Desfontaines launched de Candolle's botanical career by recommending him at a herbarium. Within a couple of years de Candoll ...

, and in the process, developed a lifelong passion for botany. He was a principal contributor towards Candolle's publication of "

Prodromus Systematis Naturalis Regni Vegetabilis ''Prodromus Systematis Naturalis Regni Vegetabilis'' (1824–1873), also known by its standard botanical abbreviation ''Prodr. (DC.)'', is a 17-volume treatise on botany initiated by Augustin Pyramus de Candolle. De Candolle intended it as a summa ...

", being the author of the sections involving the plant families

Marcgraviaceae The Marcgraviaceae are a neotropical angiosperm family in the order Ericales. The members of the family are shrubs, woody epiphytes, and lianas, with alternate, pinnately nerved leaves. The flowers are arranged in racemes. The flowers are accomp ...

Convolvulaceae Convolvulaceae (), commonly called the bindweeds or morning glories, is a family of about 60 genera and more than 1,650 species. These species are primarily herbaceous vines, but also include trees, shrubs and herbs. The tubers of several spe ...

, Hydroleaceae, Selaginaceae,

Nyctaginaceae Nyctaginaceae, the four o'clock family, is a family of around 33 genera and 290 species of flowering plants, widely distributed in tropical and subtropical regions, with a few representatives in temperate regions. The family has a unique fruit t ...

, Hypericineae and Guttiferae. The botanical genus ''

Choisya ''Choisya'' is a small genus of aromatic evergreen shrubs in the rue family, Rutaceae. Members of the genus are commonly known as Mexican orange due to the similarity of their flowers with those of the closely related orange, both in shape an ...

'' (family

Rutaceae The Rutaceae is a family, commonly known as the rueRUTACEAE
in BoDD – Botanical Der ...

) is named in his honor. As a theologian/philosopher he published works with titles such as, "''Des doctrines exclusives en philosophie rationelle''" (1828) and "''Les lois morales: Fragment d'un cours de philosophie morale''" (1836).

Selected botanical works

* ''Prodromus d'une monographie de la famille des hypéricinées'', (9 editions issued from 1821 to 1983) – Prodomus of a monograph on Hypericineae. * ''Descriptions des Hydroléacées'', 1830 – Descriptions of Hydroleaceae. * ''Convolvulaceae orientales'', 1834 – Convolvulaceae Oriental * ''Mémoire sur les familles des Ternstroemiacées et Camelliacées'', 1854 – Treatise on the families Ternstroemiaceae and Camelliaceae.OCLC Classify
published works

References

External links

IPNI
List of taxa described & co-described by Choisy (many entries). {{DEFAULTSORT:Choisy, Jacques Denys 1799 births 1859 deaths People from the canton of Geneva Swiss Protestant ministers 19th-century Swiss botanists