Erwin Janchen
Emil Erwin Alfred Ritter von Janchen-Michel (born 15 May 1882 in Vöcklabruck; died 10 July 1970 in Vienna) was an Austrian botanist. Life and work. He earned his doctorate in 1923 at the University of Vienna. He was scientifically active at the Botanical Institute of the University. He made several research trips. Among the plants first described by Janchen (with co-author Gustav Wendelberger) is the native Austrian wild form of "Brassica rapa" subsp. "silvestris".