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By: Arduin, Marcos - Kraus, Jane ElizabethType: ArticleIn: Sociedade Botânica de São PauloVolume:Series:Issue:Date: 2001-03-01Page Range:Publication Info: Sociedade Botânica de São Paulo 2001-03-01Subjects: ambrosia galls Anatomy Asteraceae Baccharis concinna Baccharis dracunculifolia