He served as president of the Botanical Society of America in 1916.

The society was founded as the Botanical Society of London in 1836.

He was also a corresponding member of the Botanical Society of America.

He was vice president of the Botanical Society of America in 22 1912 and 1914.

It is published by the Botanical Society of America on a monthly basis since 1914.

He became a member of the Botanical Society of France in 1911.

He became a member of the Bavarian Botanical Society during this period.

In 1907 he demonstrated his chromatograph for the German Botanical Society.

From 1897-1898, he was the president of the Botanical Society of America.

He was also founder, in 1882, and first president, of the German Botanical Society.