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By: Traverse, AlfredType: ArticleIn: Journal of the Botanical Research Institute of TexasVolume: 7Series:Issue: 2Date: 2013Page Range: 751--764Publication Info: Fort Worth, Tex, Botanical Research Institute of Texas, 2007-Subjects:
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By: Traverse, AlfredType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 79Series:Issue:Date: 1992Page Range: 110--125Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects: