Excellent messages and regular information about the plants.
The Pittosporaceae family includes woody plants originating from Oceania, East Asia and tropical Africa, very similar to the Saxifragaceae, but different from them mainly due to the presence in the cortex of the resin channels and the corolla structure, which can be gamopetala. Flowers are usually attinomorphic, hermaphroditic, with perianth, usually consisting of 5 more or less grown sepals and as many petals, sometimes welded, androceo pentamero, gyneceo of 2 fruits forming ovario-supero. The flower formula is usually as follows:
A fruit is a capsule or lizard of a polysperm (Ribes).
The most famous species is Pittosporum tobira, a shrub with leather leaves, evergreen, brilliant and fragrant flowers, widely used for hedges and borders in gardens, especially in coastal areas with a mild climate.

http://www.dipbot.unict.it/sistematica/Pitt_fam.html