Chuanqianliu is a small evergreen tree in the family Myrtle, belonging to the genus Melastomataceae. Plant height 2-5 meters; Bark cracking; The tender branches are cylindrical in shape, with slender and drooping branches; The leaves are leathery, ranging from lanceolate to linear lanceolate, with a pointed or short apex and a narrowed base. Both sides are densely covered with black glandular dots; The spike shaped inflorescence is dense, with silk hairs on the inflorescence axis, membranous petals, nearly circular in shape, light green in color, and numerous stamens arranged densely; Capsule bowl shaped or hemispherical Flowering period from April to September; The fruiting period is from May to October. Due to the dense brush bottle like formation at the top of the spike shaped inflorescence, it is also known as the "bottle brush subtree".