Sclerolaena R.Br.
Appendages of spines (Fig. 34) Sclerolaena
Fruit with 5(4) or more spreading spines
Fruit glabrous or hairy, with 5(4) spreading spines
Leaves hairy on both surfaces, obovate to c.15 mm long, shortly petiolate. Fruit hairy 2–3 mm long. Spines 5(4) the longest 5–9 mm long, the shorter c. 4 mm long. Shrub to 1 m high with hairy branches. Introd. from western divisions of NSW. Uncommon Sclerolaena birchii
Leaves dark green hairy on lower surface only. Fruit with longest spine 4–10 mm long; 2 shorter spines united near the base. Leaves linear or linear-lanceolate, 6–20 mm long, 1–2 mm wide. Shrub usually c. 50 cm high branches glabrous to hairy. Overgrazed pastures. Fl. most of the year. Introd. from western divisions of NSW. Uncommon. Black Rolypoly or Electric Burr