The Smooth - leaved Elm '' Ulmus minor '' var. '' minor '' cultivar ' Silvery Gem ' bears leaves with an irregular but conspicuous creamy - white margin '' Hilliers ' Manual of Trees & Shrubs '' .
The Smooth - leaved Elm '' Ulmus minor '' var. '' minor '' cultivar ' Silvery Gem ' is a highly ornamental clone . 
 The tree bears leaves with an irregular but conspicuous creamy - white margin '' Hilliers ' Manual of Trees & Shrubs '' .