sentences:  In 2007 the Swedish Biodiversity Centre's 'Programme for Diversity of Cultivated Plants' included 'Purpurascens' (mistakenly called "Ulmus procera" 'Purpurea' in Sweden) in their plant conservation programme.Introduced to the USA in the late 1860s as "Ulmus stricta purpurea", 'Purple leaved elm' was stocked by the Mount Hope Nursery (also known as Ellwanger and Barry) of Rochester, New York.An "U. campestris purpurea", 'Purple-leaved English Elm', of "compact upright growth" with "leaves a purple color in May and June", appeared in the 1902 catalogue of the Bobbink and Atkins nursery, Rutherford, New Jersey, and an "U. stricta purpurea", also called 'Purple-leaved English Elm', "a tree with erect branches and purplish-red leaves", in both Bobbink and Atkins' 1902 catalogue and Kelsey's 1904 catalogue, New York.