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By: Sánchez-Chávez, Erandi - Vovides, Andrew P. - Sosa, VictoriaType: ArticleIn: PhytoKeysVolume: 199Series:Issue:Date: 2022Page Range: 187--202Publication Info: Sofia, Bulgaria Pensoft Publishers [2010]-Subjects: Asteraceae Dahlia hexacolporate Hidalgoa Pollen morphology tricolporate