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By: Walker, James W. - Walker, Audrey GType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 66Series:Issue:Date: 1979Page Range: 731--755Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects:
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By: Walker, James W. - Walker, Audrey GType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 71Series:Issue:Date: 1984Page Range: 464--521Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects: