Has collected specimens later identified by:

Collected Apidae and identified Apidae

Collected Asteraceae and identified Scrophulariaceae
Cornelia Klak
South Africa

Collected Aizoaceae and identified Aizoaceae
Herold Georg Wilhelm Johannes Schweickerdt
November 29, 1903 – February 21, 1977
Germany; South Africa

Collected Poaceae and identified Poaceae
Collected Brassicaceae and identified Brassicaceae