German botanist (1879-1961).
Hans Theodor Güssow (1879–1961) was a Canadian plant pathologist. Güssow was born in Breslau, Germany (today known as Wrocław, part of Poland) and educated at universities in Breslau, Leipzig and Berlin. In 1903 he moved to the UK to work as an assistant to William Carruthers who was the botanist for the Royal Agricultural Society. He later emigrated to Canada after being appointed Dominion botanist by Sydney Arthur Fisher. World War I had a "devastating effect" on Güssow's life. In a meeting between farmers and others he was referred to as "that German in Ottawa" and fellow plant pathologists