Ulmus lanceifolia 常绿榆
（重定向自Ulmus tonkinensis）
Ulmus lanceifolia Roxburgh, ex Wall. , occasionally known as the Vietnam Elm, is a very large tree endemic to a wide area of southern Asia. Its range extends southeast and eastwards from Darjeeling in the Himalaya, through Bangladesh, southern China, Myanmar (formerly Burma), Thailand, Laos, Vietnam and on discontinuously into Indonesia, straddling the Equator in Sumatra and Celebes.