Syringin, which occurs in the bark of "Syringa vulgaris", is a methoxyconiferin. Similar to "Syringa vulgaris", but flowers earlier and has very different leaves. The larvae feed on "Ligustrum ovalifolium" and "Syringa vulgaris". It is named after the lilac tree ("Syringa vulgaris"), from which it was first isolated. Lilac, "Syringa vulgaris", is a species of flowering plant in the olive family. "Syringa vulgaris" is a large deciduous shrub or multistemmed small tree, growing to high. The most common member of "Syringa" is "Syringa vulgaris" (common lilac).