Friedrich Kasimir Medikus (or Medicus; 1738–8 July 1808) was a German physician and botanist.

He was born at Grambach and became director of the University of Heidelberg and curator of the botanical garden at Mannheim

Mannheim

Mannheim is a city in southwestern Germany. With about 315,000 inhabitants, Mannheim is the second-largest city in the Bundesland of Baden-Württemberg, following the capital city of Stuttgart....

. He encouraged the cultivation of locust trees (Robinia

Robinia

Robinia is a genus of flowering plants in the family Fabaceae, subfamily Faboideae, native to North America and northern Mexico. Commonly known as "locusts", they are deciduous trees and shrubs growing 4-25 m tall. The leaves are pinnate with 7-21 oval leaflets. The flowers are white or pink, in...

) in Europe.

The genus Medicusia was named after him by Conrad Moench

Conrad Moench

Conrad Moench was a German botanist, sometimes written Konrad Mönch, was Professor of Botany at the Marburg University from 1786 until his death....

 (now considered synonymous with Picris

Picris

Picris is a genus in the family Asteraceae .Picris species are used as food plants by the larvae of some Lepidoptera species, such as the grass moth Diasemia reticularis. Schinia cardui feeds exclusively on P. hieracioides....

).