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Rudolf Jakob Camerarius
Rudolf jakob camerarius.jpg
Born (1665-02-12)12 February 1665
Died 11 September 1721(1721-09-11) (aged 56)
Tübingen, Holy Roman Empire
Other names Camerer
Known for Investigations on the reproductive organs of plants (De sexu plantarum epistola)
Parent(s)
  • Elias Rudolph Camerarius Sr. (father)
Scientific career
Fields Botanist and physician
Doctoral advisor Elias Rudolph Camerarius Sr.
Georg Balthasar Metzger
Doctoral students Johann Andreas Planer

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

Life

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)).

While other botanists, such as John Ray and Nehemiah Grew, 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.

Camerarius, Rudolf Jakob – De sexu plantarum, 1694 – BEIC 11856403
De sexu plantarum, 1694

See also

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