[Cal-IPC] Invasiveness, Toxicity: Myoporum laetum (myoporum) is an evergreen shrub or small tree (family Myoporaceae) found along the coast of California and in the San Francisco Bay region. It favors coastal areas, woodlands and riparian areas. Myoporum has escaped cultivation in many areas, and is commonly found near urban areas. Myoporum may crowd out native plants, growing to form dense stands. Myoporum foliage contains toxic chemical compounds that can cause fatal liver damage in livestock, so grazing is not a control option. (link added by Mary Ann Machi)

[Wikipedia] New Zealand Native: Myoporum laetum, commonly known as ngaio or mousehole tree is a plant in the family Scrophulariaceae endemic to New Zealand, including the Chatham Islands. It is a fast growing shrub, readily distinguished from others in the genus by the transparent dots in the leaves which are visible when held to a light. (link added by Mary Ann Machi)