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Augustin Saint-Hilaire

Augustin François César Prouvençal de Saint-Hilaire.

Augustin François César Prouvençal de Saint-Hilaire (1779–1853), French botanist and traveler, was born at Orléans, France, on 4 October 1779. A keen observer, he is credited with important discoveries in botany, notably the direction of the radicle in the embryo sac and the double point of attachment of certain ovules. He also described two families, the Paronychiae and the Tamariscinae, as well as a large number of genera and species.

Biography

He began to publish memoirs on botanical subjects at an early age. Between 1816 and 1822 and again in 1830, he traveled in South America, especially in south and central Brazil, and the results of his study of the rich flora of the regions through which he passed appeared in several books and numerous articles in scientific journals.

In his first voyage, from 1816 to 1822, he explored the Brazilian backlands, traveling ca. 9,000 km, from Northeast Brazil to Río de la Plata. He was able to gather 24,000 specimens of plants, with 6,000 species, 2,000 birds, 16,000 insects and 135 mammals, plus many reptiles, mollusks and fishes. Most of these species were described for the first time. In the next years he devoted himself to the study, classification, description and publication of this huge material, but he was considerably impaired by his ill health, due to diseases contracted during the tropical travels. In 1819 he was appointed correspondent of the Académie des Sciences. He was awarded the Légion d'honneur at the level of Chevalier, and the Portuguese Order of Christ.

Works

The works by which he is best known are the Flora Brasiliae Meridionalis in three volumes (1825–1832), published in conjunction with A. de Jussieu, and J. Cambessdes, and illustrated by Pierre Jean François Turpin; Histoire des Plantes les plus Remarquables du Brésil et de Paraguay (1824), Plantes Usuélles des Brésiliens (1827–1828), also in conjunction with De Jussieu and Cambessdes; and Voyage Dans le District des Diamants et sur le littoral du Brésil,

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