Boronia barkeriana ssp. gymnopetala Duretto

Sepals 3.5–6 mm wide, ovate. Inner surface of petals glabrous. Pedicels 1.5–2 mm wide at apex. Leaves obovate to oblanceolate 12–23 mm long, 4–9 mm wide, margins toothed. Flowers 1–3 together. Sydney Harbour area south to Waterfall. Extinct. Fl. spring.