Ulmus davidiana var. japonica Accolade Accolade elm

One One of the more promising Dutch elm disease–resistant selections, Accolade elm was selected at the Morton Arboretum in Illinois and introduced in the 1990s. Accolade is the trade name; ‘Morton’ is the cultivar name. The only campus examples line the sidewalk along Pasteur Drive at 1201 Welch Road. Near the Governor’s Lane end, a few Frontier elms are mixed in, making comparison easy. Both have characteristically elm-like leaves, doubly serrated and lopsided at the base, but in fall Accolade turns yellow while Frontier becomes purplish red. Accolade also develops rougher, furrowed gray bark; Frontier’s is more finely marked.