Concepedia
Journal of the Arnold Arboretum · 1972 · 60 citations · 0 references
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Life SciencesBotanyPlant SciencesPlant EvolutionPlant SystematicsPlant TaxonomyEvolution Of FlowersFern SystematicsFlower MorphologyOrigin Of Land PlantsPlant PhylogenySpeciation In PlantsPhylogeny Of Fossil Angiosperms