This plant, cultivated on campus at Victoria University, is a female.
|Pittosporum obcordatum flowers|
|Pittosporum eugenioides flowers: female above; male below.|
|Pittosporum tenuifolium flower.|
The two species I've already illustrated here have narrow pointed petals, and both grow as epiphytes (plants that grow on other plants, but are not parasitic on them). These are P. kirkii and P. cornifolium.
Finally, a scan of an old slide of P. dallii. Its flowers are similar to those of P. eugenioides, but its toothed leaves are very different.