Johann Jacob Roemer was a physician

Physician

A physician is a health care provider who practices the profession of medicine, which is concerned with promoting, maintaining or restoring human health through the study, diagnosis, and treatment of disease, injury and other physical and mental impairments...

 and professor of botany

Botany

Botany, plant science, or plant biology is a branch of biology that involves the scientific study of plant life. Traditionally, botany also included the study of fungi, algae and viruses...

 in Zurich

Zürich

Zurich is the largest city in Switzerland and the capital of the canton of Zurich. It is located in central Switzerland at the northwestern tip of Lake Zurich...

, Switzerland

Switzerland

Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

. He was also an entomologist.

With Austria

Austria

Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

n botanist Joseph August Schultes, he published the 16th edition of Carolus Linnaeus

Carolus Linnaeus

Carl Linnaeus , also known after his ennoblement as , was a Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of binomial nomenclature. He is known as the father of modern taxonomy, and is also considered one of the fathers of modern ecology...

' Systema Vegetabilium.

Roemer's Genera insectorum is a most attractive Swiss publication on entomology. The splendid hand-coloured plates were drawn and engraved by the Swiss artist J.R. Schellenberg, an entomologist himself and therefore familiar with structural details.

In 1793, he was elected a foreign member of the Royal Swedish Academy of Sciences

Royal Swedish Academy of Sciences

The Royal Swedish Academy of Sciences or Kungliga Vetenskapsakademien is one of the Royal Academies of Sweden. The Academy is an independent, non-governmental scientific organization which acts to promote the sciences, primarily the natural sciences and mathematics.The Academy was founded on 2...

.

Works

• Magazin Fur die Botanik vols. 1-4; 1787-1791 In 1790, Roemer continued this series as Neues Magazin Fur die Botanik
• Genera insectorum Linnaei et Fabricii iconibus illustrata. Vitoduri Helvetorum (Winterthur), apud Henric. Steiner, 1789
• Flora Europaea...Norimbergae [Nürnberg] 14 fasc. 1797-1811
• Collecteana ad Omnem rem Botanicam Spectantia Partim e Propriis, Partim ex Amicorum Schedis Manuscriptis Concinnavit et Edidit J. J. Roemer, M.D. Turici [Zurich] In parts between 1806 and 1810
• Systema vegetabilium (ed. 16) 7 vols. - 1817-1830