The small cream to lime-yellow flowers of Hermas villosa are borne in dense, shallowly domed clusters or compound umbels of about 4 cm in diameter. The stalks are long, slightly branched, pink or green in colour with a few scattered, small bracts.
Flowering happens in summer and autumn. The fruits to follow are round and winged (Bean and Johns, 2005; Manning, 2007; iSpot).