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By: Kondratieff, Boris C - Okane, S L - Schaal, Barbara A.Type: ArticleIn: RhodoraVolume: 95Series:Issue:Date: 1993Page Range: 254--260Publication Info: [Cambridge, Mass., etc.] New England Botanical Club [etc.]Subjects:
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By: Schaal, Barbara A. - Learn, Gerald HType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 75Series:Issue:Date: 1988Page Range: 1207--1216Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects: