Pinnately compound leaves are borne alternately along the stems. Flowers are showy, perfect, and borne in flat-topped corymbs. Fruit is a red pome and borne in showy clusters. Winter bud scales are white, woolly, and not sticky. Young branches are pubescent.
Stipules are broad and coarsely toothed.
May. Fruit is orange-red and matures in August or September. Mountain-Ash Winter bud scales are glabrous, or ciliate at the most, and sticky. Young branches rapidly become glabrous. May. Fruit is bright red and matures in October. This tree is native in areas of Ohio with cooler summers.