Dutch botanist (1879–1966).
Jacob Jeswiet (December 28, 1879 – July 23, 1960) was a Dutch botanist who worked in the sugar experimental station in Pasoeroean in Java, and then returned to the Netherlands in 1925 to become a professor at the Wageningen Agricultural College. While in Java he was involved in breeding the variety POJ 2878, which was called the Javan wondercane. Jeswiet was born in Amsterdam, where he studied botany, after which he went to Berlin and Zurich, receiving a doctorate in 1913 from Zurich. He studied the ecology of plants in dunes, and his dissertation was titled Die Entwickelungsgeschichte der Flo