Bracteantha viscosa (used to be known as Helichrysum viscosa) is commonly known as Sticky Everlasting.
This is a daisy flower and the centre, which is made up of many crowded individual flowers, makes a good landing platform for pollinators. Butterflies (especially Painted Ladies) are often seen visiting these flowers. Ants are commonly found there as well, although why the ants are there and whether they are involved in actual pollination is not known.

light microscopy
electron microscopy