Acacia williamsonii

Bushy shrub to 2 m high; branchlets glabrous. Phyllodes inclined to ascending (often patent at ends of flowering branchlets), narrowly linear, 4–9 cm long, 1.5–3 mm wide, usually slightly curved, not rigid, glaucous (or green or sub-glaucous at ends of flowering branchlets), glabrous, narrowed at base; midrib not prominent, lateral veins absent; gland 7–27 mm above pulvinus, often absent. Racemes with rachis usually 1–3 cm long, glabrous, normally drying dark reddish-brown; peduncles 2–3 mm long, rather stout, glabrous, sometimes with appressed, minute hairs, drying dark reddish-brown to blackish; heads globular, subdensely 15–20-flowered, bright golden; bracteole lamina more or less circular, dark brown to blackish, white-fimbriate. Flowers 5-merous; sepals united. Pods usually more or less moniliform, to 9 cm long, 3–3.5 mm wide, firmly chartaceous to somewhat crustaceous, glabrous, black; seeds longitudinal, oblong to elliptic, 3.5–4 mm long, somewhat shiny, black, aril clavate. Flowers Aug.–Sep.