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By: Parker, Bruce C - Bleck, John.Type: ArticleIn: Annals of the Missouri Botanical GardenVolume: 53Series:Issue:Date: 1966Page Range: 1--16Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects:
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By: Ferren, Wayne R. - Bleck, John. - Vivrette, NancyType: ArticleIn: Madroño; a West American journal of botanyVolume: 28Series:Issue:Date: 1981Page Range: 80--85Publication Info: Berkeley, California Botanical Society,Subjects: