Christian Eduard Langethal

Christian Eduard Langethal (6 January 1806, Erfurt – 28 July 1878, Jena) was a German botanist and agronomist. He is known for his writings involving agricultural botany and agricultural history. 
Beginning in 1827 he studied natural sciences at the University of Jena. During the winter term of 1834/35 he began teaching classes in natural history at the recently built scientific academy at Eldena (near Greifswald), where he worked closely with his former teacher, Friedrich Gottlob Schulze (1795–1860). In 1839, with Schulze, he returned to the University of Jena as an associate professor of botany. At Jena he distinguished himself in studies of botany as it applied to agricultural science.
Principal writings.
With Diederich Franz Leonhard von Schlechtendal and Ernst Schenk, he continued Jonathan Carl Zenker's "Flora von Thüringen: Und den angrenzenden Provinzen" (1830–1855, 145 issues).