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: Cayzer, L. (2002). Pittosporaceae. In: Spencer, R.. 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.