 A leaf-specimen labelled "U. umbraculifera" held in the herbarium of the Muséum National d'Histoire Naturelle appears to confirm this suggestion.However, a leaf-specimen labelled "U. umbraculifera" Späth held in the herbarium of the Naturalis Biodiversity Center in Leiden shows that the clone marketed by the Späth nursery had a distinctive, almost rhomboidal leaf.The tree is reputedly always grafted on to "U. minor" standards.