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By: Rosas-Alquicira, Edgar Francisco - Riosmena-Rodríguez, Rafael - Hernández-Carmona, Gustavo - Neto, Ana IsabelType: ArticleIn: Acta Botanica BrasilicaVolume:Series:Issue:Date: 2013-12-01Page Range:Publication Info:Subjects: carposporangial filament origin senescence sporangial pore canal anatomy sporangium location taxonomy