A seedling found at Mt. Airy Arboretum, Cincinnati, Ohio. Originally misnamed but re-identified by Michael Dirr and consequently renamed by him for the arboretum. Thought to be a bird planted seedling from a group of V. dilatatum 'Erie' which were growing just a short distance away. Foliage is a lustrous, leathery, dark green and the habit is upright, rounded. Fruits of this seedling are considerably larger than that of 'Erie'. Considered it to be more cold hardy than other dilatatum. Zone 5