Nikolaus Joseph Freiherr von Jacquin

Dutch, 1727 – 1817

Nikolaus Joseph Freiherr von Jacquin was a scientist who studied medicine, chemistry and botany.

Born in Leiden in the Netherlands, he studied medicine at Leiden University, then moved first to Paris and afterward to Vienna. In 1752, he studied under Gerard van Swieten in Vienna.

Between 1755 and 1759, Jacquin was sent to the West Indies, Central America, Venezuela and New Granada by Francis I to collect plants for the Schönbrunn Palace, and amassed a large collection of animal, plant and mineral samples. In 1797, Alexander von Humboldt profited from studying these collections and conversing with Jacquin in preparation of his own journey to the Americas.

In 1763, Jacquin became professor of chemistry and mineralogy at the Bergakademie Schemnitz (now Banská Štiavnica in Slovakia). In 1768, he was appointed Professor of Botany and Chemistry and became director of the botanical gardens of the University of Vienna. For his work, he received the title Edler in 1774. In 1783, he was elected a foreign member of the Royal Swedish Academy of Sciences. In 1806, he was created a baron. In 1809, he became a correspondent of the Royal Institute, which later became the Royal Netherlands Academy of Arts and Sciences.

His younger son, Emil Gottfried (1767–1792), and his daughter, Franziska (1769–1850), were friends of Mozart; Mozart wrote two songs for Gottfried to publish under Gottfried's name ("Als Luise ...", K. 520, and "Das Traumbild", K. 530) and gave piano lessons to Franziska. Mozart dedicated a considerable number of his works to the Jacquin family, notably the Kegelstatt Trio. This was first played at the Jacquins' house in August 1786 with Franziska playing the piano.

His son Joseph Franz (1766–1839) succeeded him as professor of botany and chemistry at the University of Vienna and wrote several notable botanical books.

Von Jacquin died in Vienna.

He is commemorated by the genera Jacquinia (Theophrastaceae) and Jacquiniella (Orchidaceae). In 2011, the Austrian Mint issued silver coins to mark his science expeditions to the Caribbean.

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Ornithogalum caudatum

Ornithogalum caudatum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum coarctatum

Ornithogalum coarctatum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum comosum

Ornithogalum comosum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum conicum

Ornithogalum conicum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum flavescens

Ornithogalum flavescens (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum flavissimum

Ornithogalum flavissimum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum fuscatum

Ornithogalum fuscatum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum lacteum

Ornithogalum lacteum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum latifolium

Ornithogalum latifolium (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum miniatum

Ornithogalum miniatum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum odoratum

Ornithogalum odoratum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum polyphyllum

Ornithogalum polyphyllum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum pyramidale

Ornithogalum pyramidale (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum secundum

Ornithogalum secundum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum suaveolens

Ornithogalum suaveolens (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Ornithogalum tenellum

Ornithogalum tenellum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Osteospermum caeruleum

Osteospermum caeruleum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Oxalis hirta varietas

Oxalis hirta varietas (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Oxalis hirta

Oxalis hirta (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Oxalis versicolor

Oxalis versicolor (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Panax aculeatum

Panax aculeatum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Panicum coloratum

Panicum coloratum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Panicum maximum

Panicum maximum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Paspalum racemosum

Paspalum racemosum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Paspalum virgatum

Paspalum virgatum (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Passiflora cuprea

Passiflora cuprea (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Passiflora incarnata

Passiflora incarnata (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Passiflora lutea

Passiflora lutea (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Passiflora rubra

Passiflora rubra (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

Paullinia cauliflora

Paullinia cauliflora (1781-1793)

Nikolaus Joseph Freiherr von Jacquin (Dutch, 1727 – 1817)

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