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By: Johnson, David M. - Murray, Nancy AType: ArticleIn: Contributions from the University of Michigan HerbariumVolume: 22Series:Issue:Date: 1999Page Range: 95--104Publication Info: Ann Arbor, University Herbarium, University of Michigan, 1939-Subjects:
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By: Johnson, David M. - Murray, Nancy AType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 77Series:Issue:Date: 1990Page Range: 598--600Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects: