"The Summer Lilac"
This is a shrub known to the botanist as Buddleia variabilis. There are many species of the genous, but not very many are under cultivation. The one here shown was introduced from China. It has fragrant flowers which, as will be seen, are borne in profusion.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 10 Chapter 7