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Link: • Carl Linnaeus to Nicolaus Joseph, baron von Jacquin, 26 February 1760 n.s.
Dated 1760 d. 26. februarii. Sent from Uppsala (Sweden) to Wien (Austria). Written in Latin.


Linnaeus expresses thanks for the letter of 22 January 1760Letter L2659 and praises 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 beautiful drawings of flowers.

Among several shorter botanical notes, some are more elaborated:

Ayenia is a specimen of a variety received through 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.
and not the normal one. The proof for that is found in some minor details of the petals.

Also for Aralia, a discussion on precise details is performed, illustrating the difference between Jacquin’s and one described by 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
[Linnaeus presumably refers to The Civil and natural history of JamaicaBrowne, Patrick The Civil and
natural history of Jamaica: in three
parts: containing, I. An accurate
description of that island [...] with a
brief account of its former and present
state, government, revenues, produce,
and trade: II. A history of the natural
productions [...] native fossils [...]:
III: An account of the nature of
climates in general, and their
different effects upon the human
(London 1756).

Linnaeus is eager to see a living plant from an American seed and asks Jacquin for more such seeds in addition to the four sets he has already got. Linnaeus promises Jacquin refunding for mail expense but stresses that spring is coming, after which it is too late to sow.

Linnaeus gives Jacquin some advice on how to proceed in the diagnosis of Umbellatae, especially on the importance of the involucre. Another basic question is taken up, the importance of the pericarp to constitute a new genus. Linnaeus does not like to answer that in writing but would prefer to expand on these things orally in a demonstration. However, he refers back to what he said in Philosophia botanicaLinnaeus, Carl Philosophia
botanica, in qua explicantur fundamenta
botanica cum definitionibus partium,
(Stockholm 1751). Soulsby no.
: all observations are basically of equal value, and it is the totality that counts.

In reply to a request from Jacquin for beautiful flowers to show the Emperor, Franz IFranz I, (1708-1765).
Austrian. Reigned from 1745-1765.
. Linnaeus says that those he has are well known to Jacquin so he does not know what to send. – Linnaeus repeats his desire to get a copy of Giovanni Antonio Scopoli’sScopoli, Giovanni Antonio
(1723-1788). Italian. Physician and
naturalist. Correspondent of Linnaeus.
work [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).



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


1. Caroli Linnaei epistolae ad Nicolaum Josephum Jacquin (1841), p. 23-26   p.23  p.24  p.25  p.26.