Heintze was born on 26 September 1881 to Fredrik and Kerstin (
née Svensson) Heintze in
Skurup,
Skåne. He had a younger sister, Anna Maria (b. 1889). He enrolled as a student at
Lund University in 1901. He graduated in 1906, and earned his doctorate in 1913. His first position was as a teacher at
Uddevalla kommunalgymnasium. Heintze died on 6 May 1941 in Stockholm, and is buried in the Skurups Norra Kyrkogård ("Skurup's Northern Cemetery"). He is known for his work on the classification of
cormophytes, particularly the family Ranuculaceae. == Selected publications ==