 Ulmus × intermedia 'Coolshade'

The hybrid elm cultivar Ulmus × intermedia 'Coolshade' is an American hybrid cultivar cloned from a crossing of the Slippery, or Red, Elm "Ulmus rubra" (female parent) and the Siberian Elm "Ulmus pumila" at the Sarcoxie Nurseries, Sarcoxie, Missouri, in 1946.At Arnold Arboretum, where there was a specimen, herbarium material was labelled "Ulmus pumila" 'Coolshade' (see 'External links').