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Link: • Carl Linnaeus to Nicolaus Joseph, baron von Jacquin, 22 November 1759 n.s.
Dated 1759 d. 22 Novembr.. Sent from Uppsala (Sweden) to Wien (Austria). Written in Latin.


Linnaeus thanks Nicolaus Joseph von JacquinJacquin, Nicolaus Joseph, baron von
(1727-1817). Dutch. Botanist. In
1755 at the order of emperor Franz I of
Austria he went to the Antilles and
South America. In 1763 he became
professor of mineralogy and chemistry at
Chemnitz, later professor of botany at
Vienna and director of the botanical
garden at Schönbrunn. Correspondent
of Linnaeus.
for his letter of 24 OctoberLetter L2597, saying that he has learnt more from it than from a year’s work. He is particularly pleased to have got the plant Ximenia right, on which Thomas François DalibardDalibard, Thomas François
(1703-1779). French. Naturalist, an
early adherent of Linnaeus’s system.
had refused to inform him although he had seen it in Africa.

Comajandura interests Linnaeus specially. He has asked Pehr LöflingLöfling, Pehr (1729-1756).
Swedish. Botanist and explorer. Studied
under Linnaeus. Went to Spain in 1751
and took part in the Spanish expedition
to Venezuela in 1754, where he died.
Correspondent of Linnaeus.
to study it for him, but without success. Also somebody else whom Löfling had approached in this matter, had failed. It is depicted by Francisco HernandezHernandez, Francisco
(1514-1578). Spanish. Physician and
naturalist. Explorer of South America.
but Linnaeus does not understand the drawing [Linnaeus refers to a work by Hernandez ] so he asks Jacquin to help him.

There are about 50 remaining detailed questions and remarks on various plants, among which he reports that his items of Plumbago 2 and Sauvagesia are unlike those sent by Jacquin.

At the end of the letter, Linnaeus asks for Jacquin’s observations on American insects and for information on the publication of Giovanni Antonio Scopoli’sScopoli, Giovanni Antonio
(1723-1788). Italian. Physician and
naturalist. Correspondent of Linnaeus.
flora [Linnaeus refers to Flora CarniolicaScopoli, Giovanni Antonio
Flora Carniolica exhibens plantas
Carniolae indigenas et distributas in
classes naturales. Cum differentiis
specificis, synonymis recentiorum, locis
natalibus, nominibus incolarum,
observationibus selectis, viribus
(Vienna 1760).
] and on the activities of Wilhelm Heinrich KramerKramer, Wilhelm Heinrich
(?-1765). German. German-born Austrian
botanist and physician. Military surgeon
at Bruck a. Leitha. Correspondent of

Why does Jacquin say that Lobelia longiflora is very poisonous?

Linnaeus is enclosing flowers and seeds of Plumbago, Petiveria and Verbesina.

A letter of 22 November 1759Letter L2615, to Gerhard van SwietenSwieten, Gerhard van
(1700-1772). Dutch. Pupil of Boerhaave.
Called by Maria Theresa to Vienna, where
he organised the public health system.
Correspondent of Linnaeus.
is attached.

Other persons mentioned: Sébastien VaillantVaillant, Sébastien
(1669-1722). French. Botanist and
surgeon. Professor at the Jardin des
plantes. His theory on plant sexuality
influenced Linnaeus who regarded
Vaillant as one of the most important
, Patrick BrowneBrowne, Patrick (1720-1790).
Irish. Botanist who made six voyages to
the West Indies. In 1756 he published
The Civil and natural history of
(1756). Correspondent of
, Philip MillerMiller, John (1715-1780).
German. Painter and engraver. Moved to
London in 1744. Published Illustratio
systematis sexualis Linnaei



a. original holograph (UUB, G152g). [1] [2] [3] [4]


1. Caroli Linnaei epistolae ad Nicolaum Josephum Jacquin (1841), p. 7-11   p.7  p.8  p.9  p.10  p.11.