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By: Peterson, Paul M. - Soreng, Robert John, - Styer, David - Neubauer, Dylan - Morgan, Randall - Yadon, VernType: ArticleIn: Journal of the Botanical Research Institute of TexasVolume: 5Series:Issue:Date: 2011Page Range: 421--426Publication Info: Fort Worth, Tex Botanical Research Institute of Texas 2007-Subjects: