Already in 1922 the Netherlands Indian Forest Service had collected Ulmus in North Sumatra and in South Celebes, which was published by F. H. Endert in his Keys to Neth. Indian Trees based on Vegetative Characters (Med. Proefst. Boschwezen 20, 1928, 163). Subsequently Merrill identified the N. Sumatran specimens collected by the Banghams as U. lanceaefolia Roxb. (Contr. Arn. Arb. 8, 1934, 44). We have now several collections but they are all sterile.