In late 1936, he returned to Panama as the third manager the Missouri Botanical Garden's Tropical Station and was its director until March 1,1939 when the Tropical Station was transferred to the Canal Zone Government.
In late 1936, he returned to Panama as the third manager the Missouri Botanical Garden's Tropical Station founded in 1927 by a donation of 7,000 plants from Charles W. Powell's orchid garden. All was the Tropical Stations' director until March 1,1939 when it was transferred to the Canal Zone Government.