This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
Shrubs or small trees, or more rarely climbing or trailing shrubs. Leaves alternate, usually simple, exstipulate. There are two or three species of the genus Pittosporum hardy or nearly so in the South-west of England. The majority of the species are Australian.