Rudolf Jakob Camerarius

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Rudolf Jakob Camerarius
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Rudolf Jakob Camerarius (1665-1721)
BornFebruary 12, 1665
Tübingen, Holy Roman Empire
DiedSeptember 11, 1721
Tübingen, Holy Roman Empire
Nationality German
Scientific career
Fields Botanist and physician
Doctoral advisor Elias Rudolph Camerarius Sr.
Georg Balthasar Metzger
Doctoral students Johann Andreas Planer
He is the son of Elias Rudolph Camerarius Sr.

Rudolf Jakob Camerarius or Camerer (February 12, 1665 – September 11, 1721) was a German botanist and physician.

Germany Federal parliamentary republic in central-western Europe

Germany, officially the Federal Republic of Germany, is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.

Physician professional who practices medicine

A physician, medical practitioner, medical doctor, or simply doctor is a professional who practises medicine, which is concerned with promoting, maintaining, or restoring health through the study, diagnosis, prognosis and treatment of disease, injury, and other physical and mental impairments. Physicians may focus their practice on certain disease categories, types of patients and methods of treatment—known as specialities—or they may assume responsibility for the provision of continuing and comprehensive medical care to individuals, families, and communities—known as general practice. Medical practice properly requires both a detailed knowledge of the academic disciplines underlying diseases and their treatment—the science of medicine—and also a decent competence in its applied practice—the art or craft of medicine.



Camerarius was born at Tübingen, and became professor of medicine and director of the botanical gardens at Tübingen in 1687. He is chiefly known for his investigations on the reproductive organs of plants (De sexu plantarum epistola (1694)). [1]

Tübingen Place in Baden-Württemberg, Germany

Tübingen is a traditional university town in central Baden-Württemberg, Germany. It is situated 30 km (19 mi) south of the state capital, Stuttgart, on a ridge between the Neckar and Ammer rivers. As of 2014 about one in three people living in Tübingen is a student.

Professor academic rank at universities and other post-secondary education and research institutions in most countries

Professor is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, professor derives from Latin as a "person who professes" being usually an expert in arts or sciences, a teacher of the highest rank.

Medicine The science and practice of the diagnosis, treatment, and prevention of physical and mental illnesses

Medicine is the science and practice of establishing the diagnosis, prognosis, treatment, and prevention of disease. Medicine encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Contemporary medicine applies biomedical sciences, biomedical research, genetics, and medical technology to diagnose, treat, and prevent injury and disease, typically through pharmaceuticals or surgery, but also through therapies as diverse as psychotherapy, external splints and traction, medical devices, biologics, and ionizing radiation, amongst others.

While other botanists, such as John Ray and Nehemiah Grew, had observed that plants seemed to have sex in some form, and guessed that pollen was the male fertilizing agent, it was Camerarius who did experimental work. In studying the mulberry, he determined that female plants not near to male (staminate) plants produced fruit but with no seeds. Mercurialis and spinach plants fared likewise. With the castor oil plant (Ricinus) and with maize he cut off the staminate flowers (the "tassels" of maize), and likewise observed that no seeds formed. His results were reported in the form of a letter (the epistola), and attracted immediate attention, subsequent workers extending his results from the monoecious plants he had studied to dioecious ones as well.

John Ray British botanist (1627–1705)

John Ray FRS was an English naturalist widely regarded as one of the earliest of the English parson-naturalists. Until 1670, he wrote his name as John Wray. From then on, he used 'Ray', after "having ascertained that such had been the practice of his family before him".

Nehemiah Grew English plant anatomist and physiologist (1641–1712)

Nehemiah Grew was an English plant anatomist and physiologist, known as the "Father of Plant Anatomy".

Sex either of two main divisions (either male or female) into which many organisms can be placed, according to reproductive function or organs

Organisms of many species are specialized into male and female varieties, each known as a sex. Sexual reproduction involves the combining and mixing of genetic traits: specialized cells known as gametes combine to form offspring that inherit traits from each parent. The gametes produced by an organism define its sex: males produce small gametes while females produce large gametes. Individual organisms which produce both male and female gametes are termed hermaphroditic. Gametes can be identical in form and function, but, in many cases, an asymmetry has evolved such that two different types of gametes (heterogametes) exist.


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