 They are listed separately in Späth's 1903 catalogue, where the former appears as "U. racemosa" Thomas, a synonym of the American species "U. thomasii".The Edinburgh "U. racemosa" herbarium specimen appears, therefore, to have been mis-labelled.Its likely source-tree was the cucullate field elm clone labelled "U racemosa" that stood in RBGE in the 20th century, renamed by Melville in 1958 "U. carpinifolia" × "U. plotii" [