He was first school teacher in Copenhagen, later superintendent at the Botanical Museum.

In the other side is the Botanical Museum, a wooden building which entrance using a bridge made of wood also.

He was a curator at the Botanical Museum in Kristiania from 1852.

In 1890 he became curator of the Botanical Museum in Munich.

From 1948 he served as a curator at the Botanical Museum in Oslo.

This was the first prequel of the Botanical Museum.

He worked for more than 50 years at the Botanical Museum in Berlin-Dahlem.

Harms worked as a botanist at the Botanical Museum in Berlin.

From 1938-1950, he was also director of the Botanical Museum of the Canton.

The Botanical Museum is still housed in the same building.