Erich Werdermann

From 1919 to 1920 he worked at the Imperial Biological Institute in Berlin, where Peter Claussen (1877–1959) sparked his interest in fungi.

From 1920 to 1921, Mann was a research assistant at the Imperial Health Office with Ernst Friedrich Gilg, who introduced him to the Botanical Museum Berlin-Dahlem.

After his return he succeeded Friedrich Vaupel as curator of the Botanical Garden and took care of cacti and other succulents in the herbarium.

Werdermann traveled to Madrid to see the collections of Hipólito Ruiz López and José Antonio Pavón Jiménez.

In 1930 Werdermann published his work in 42 parts along with his own color photographs on Blooming cacti and other succulent plants.

[1] In 1948 he gave lectures and practical courses of pharmacognosy at the newly founded Free University of Berlin.