Review of Palaeobotany and Palynology · 1967 · 23 citations · 9 references
Life SciencesPlant BiologyPlant SciencesPlant AnatomyPlant EvolutionPlant Reproductive BiologyPlant-pollinator InteractionsPollen BiologyPollen GerminationPollen MorphologyPollen Tube GrowthPollination BiologyGymnosperm Pollen MorphologyPollen RelationshipsPollen Systematics
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ON THE HIGHER TAXA OF EMBRYOBIONTA
Arthur Cronquist, Armen Takhtajan, Walter Zimmermann · Taxon · 1966 · 117 citations
Margaret W. Steeves, Elso S. Barghoorn · Journal of the Arnold Arboretum · 1959 · 60 citations · Full text