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By: Spooner, David M - De Jong, Diederik Cornelius Dignus - Sun, Byung-Yun - Stuessy, Tod F. - Gengler, Karla M - Nesom, Guy L - Berry, Paul E. (Paul Edward)Type: ArticleIn: Annals of the Missouri Botanical GardenVolume: 82Series:Issue:Date: 1995Page Range: 596--602Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects: