Georg Hans Emmo Wolfgang Hieronymus (1846–1921) was a European botanist of German extraction. He was born in Silesia and died in Berlin. He began his career as a medical student in Zürich and Bern from 1868 to 1870, but became interested in botany, instead. He then studied at the University of Halle where he earned his doctorate in 1872. His standard author abbreviation is "Hieron."

Hieronymus was professor of botany in Córdoba, Argentina

Córdoba, Argentina

Córdoba is a city located near the geographical center of Argentina, in the foothills of the Sierras Chicas on the Suquía River, about northwest of Buenos Aires. It is the capital of Córdoba Province. Córdoba is the second-largest city in Argentina after the federal capital Buenos Aires, with...

, from 1874 to 1883. He also lived in Breslau, 1883–1892, and Berlin, where he was curator of the botanic garden and botanic garden museum starting in 1892. He edited the botanical journal Hedwigia for 28 years.

Hieronymus' specialty was in ferns and algae. He was known for his plant collections in both central Europe and in much of South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

.