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By: Franquemont, Christine - Franquemont, Edward - Davis, Wade - Plowman, Timothy, - King, Steven R - Sperling, Calvin R - Niezgoda, ChristineType: ArticleIn: Fieldiana. BotanyVolume: 24Series:Issue:Date: 1990-03-30Page Range: 1--66Publication Info: [Chicago], Chicago Natural History Museum, 1958-Subjects: