Pollen traits of some American ashes investigated by a scanning electron microscope

[摘要] Over last 130 years the American assh was often used for afforestation of Croatian lowland areas where the native narrow leafed ash (Fraxinus angustifolia Vahl) did not grow well. Due to unequivocal species identification of the American...

[学科分类] 植物学

[关键词] pollen;morphology;scanning electron microscopy;Fraxinus americana L.;Fraxinus pennsylvanica Marshall