垂榆(Ulmus pumila var.pendula Rehd.)又名龙爪榆、倒垂榆等,是榆科榆属的落叶小乔木。叶部形态特征近似白榆(Ulmus pumila)的形状,唯叶片稍大枝条细长、下垂,为栽培变种,分布于我国的新疆、内蒙、河南等省区。我国于1983年由内蒙引种接穗,繁殖苗木栽植,生长表现很好。颇受广大园林爱好者的欢迎和喜爱,是一种较有发展前途的观 Ulmus pumila var .pendula Rehd., Also known as the dragon claw elm, pour down elm, elm Yu elm deciduous tree. Leaf morphological characteristics similar to the shape of Ulmus pumila, the only slightly larger branches of the leaves slender, sagging, as cultivated varieties, distributed in China’s Xinjiang, Inner Mongolia and Henan provinces. China in 1983 by the introduction of scion in Inner Mongolia, breeding seedlings planted, good growth performance. Popular and loved by the majority of garden enthusiasts, is a more promising outlook