Ulmus rubra, the slippery elm, is a species of elm native to eastern North America, ranging from southeast North Dakota, east to Maine and southern Quebec, south to northernmost Florida, and west to eastern Texas, where it thrives in moist uplands, although it will also grow in dry, intermediate soils. The species superficially resembles American elm U. americana, but is more closely related to the European wych elm U. glabra, which has a very similar flower structure, though lacks the pubescence over the seed. U. rubra was introduced to Europe in 1830.