Leptodermis oblonga
Leptodermis oblonga, the baby lilac shrub, is a species of flowering plant in the family Rubiaceae, native to Mongolia, central China, and northern Vietnam.
It is typically found growing in sunny situations on the slopes of hills, along roadsides, and in thickets. A mound-forming deciduous shrub typically tall and wide but reaching, it is hardy in USDA zones 5 through 8. There is a cultivar, 'Summer Stars'.