Hibbertia marginata is a spreading shrub that typically grows to a height of 50–70 cm (20–28 in) with finely hairy, wiry young branches and that forms suckers.

[2][3][4][5] Hibbertia marginata was first formally described in 1990 by Barry Conn in the journal Muelleria from specimens collected in 1987.

[4][6] Bordered guinea flower grows in the grassy understorey of forest in the Richmond Range of north-eastern New South Wales.

The main threats to the species are land clearing, road maintenance and inappropriate fire regimes.

[2] This was one of eleven species selected for the Save a Species Walk campaign in April 2016; scientists walked 300 km to raise money for collection of seeds to be prepared and stored at the Australian PlantBank at the Australian Botanic Garden, Mount Annan.