8. Syringa L. (lilac)
About 23
species, Europe, Asia.
Several other Syringa
taxa are cultivated commonly in the United States, including S. emodi
Wall. ex Royle (Himalayan lilac), S. josikaea J. Jacq. (Hungarian
lilac), S. reticulata (Blume) H. Hara. (Japanese tree lilac), and some
horticulturally derived interspecific hybrids. These rarely, if ever, become
established outside cultivation.