Photo Courtesy of Michael Dirr

The best general description would be that V. nervosum looks like V. lantana, howerver the leaves are smaller along with other differences.  Flower buds are pink, opening to white, sweetly scented flowers with purple anthers on a rounded truss.  The sweet scent of the flowers would distunguish it from V. lantana.  Flowering can appear before leaf emergence in the spring.  Yellow to red fall color has been reported.  Fruits are 1/3" long, red initially, then maturing black.  Matures 10' tall and wide.  Native to western China, Himalayas, southeast Tibet, and northern Burma.  Zone 6