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By: Ridgway, John EType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 54Series:Issue:Date: 1967Page Range: 95--102Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects:
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By: Ridgway, John E - Skyvarla, John JType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 56Series:Issue:Date: 1969Page Range: 121--124Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects: