Education
He received his Doctor of Philosophy from the University of Zurich in 1920, with a dissertation titled Über Formen abweichender Chromosomenzahl bei Oenothera ("About forms differing in chromosome number in Oenothera").
He received his Doctor of Philosophy from the University of Zurich in 1920, with a dissertation titled Über Formen abweichender Chromosomenzahl bei Oenothera ("About forms differing in chromosome number in Oenothera").
He was known for his studies on the fungal flora of Indonesia. Shortly after, he went to Bogor, where he worked as an assistant in the mycology herbarium. Overeemia G.Arnaud (1954)
Catillaria overeemii Zahlbr.
(1928)
Chiodecton overeemii Zahlbr.
(1928)
Entoloma overeemii East.Horak (1977)
Graphis overeemii Zahlbr. (1928)
Lecidea overeemii Zahlbr.
(1928)
Parmelia overeemii Zahlbr. (1928)
Phaeographis overeemii Zahlbr.
(1928)
Pleuroflammula overeemii East.Horak (1978)
Psilocybe overeemii East.Horak & Desjardin (2006)
Ustilago overeemii Cif.