Greek hymen — membrane, sporos — seed, referring to the membranous seed wing.
For description of genus see that of its only species.
1 species from Australia and New Guinea.
Seed requires 1-year storage, preferably in a paper bag.
Rainforest marginal trees with narrow habit, glossy green leaves whorled at ends of branches, large aromatic, salver-shaped, cream flowers turning yellow with age, and large, conspicuously winged seeds in leathery capsules.
Source: (2002). Pittosporaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.