Glabrous shrub 0.5–1.5 m tall. Branchlets terete, ribbed, normally ±lightly pruinose. New shoots, young peduncles and buds reddish. Stipules caducous. Phyllodes elliptic to ±ovate, ±obovate or almost circular (subsp. heterochroa ), or inequilaterally obtriangular to obdeltate (subsp. robertii ), 1–3.5 cm long, 1–2.5 cm wide, ±undulate, with ±pungent and 1–3 mm long apical point, ±coriaceous, grey-green to subglaucous; midrib and marginal nerves prominent; lateral nerves normally not evident; gland insignificant, 0–10 mm above base. Inflorescences simple or short-racemose; peduncles 5–25 mm long; heads globular, large, loosely 5–12-flowered, bright lemon yellow. Flowers 4-merous; sepals ⅕–¼ length of corolla, united into a truncate to sinuously lobed calyx. Pods erect, linear, curved, to 6.5 cm long, 3–4 mm wide, coriaceous-crustaceous to subwoody, purplish red and slightly pruinose when young, drying black except for the thick, undulate margins. Seeds (subsp. heterochroa ) longitudinal, oblong, 3.5–4 mm long, glossy, brown; aril terminal.
Home