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Synonyms: Racosperma crassum (Pedley) Pedley APNI*

Description: Erect or spreading tree or shrub 2–10 m high, sometimes multistemmed; bark smooth to finely corrugated or fissured, grey or brownish grey; branchlets angled or flattened, glabrous.

Phyllodes narrowly elliptic, ± falcate, mostly 10–25 cm long and 10–27 mm wide (sometimes to 31 mm wide), glabrous, 3 or sometimes 4 longitudinal veins more prominent, the lower 2 joining together near base, minor longitudinal veins anastomosing, apex subacute; 1 gland at base; pulvinus 3–8 mm long.

Inflorescences usually 2 in axil of phyllodes; peduncles 4–8 mm long, glabrous, sometimes mealy; heads cylindrical, 4.5–9 cm long, bright or deep yellow.

Pods straight to curved or twisted, raised over and slightly constricted between seeds, 4–9 cm long, 2–4 mm wide, firmly papery to thinly leathery, smooth or slightly wrinkled when dry, often slightly pruinose, glabrous or with sparse hairs; seeds longitudinal; funicle folded several times and terminating in an aril.

Habit Photo A.E. Orme

Flower Photo Photo A.E. Orme

Fruit Photo A.E. Orme

Other photo Photo A.E. Orme

Herbarium Sheet

Flowering: August–November.

Distribution and occurrence: north from Denman and Wollar.

Grows in sclerophyll forest, woodland, heath or open scrub, in often red, gravelly, sandy, sandy loam or clayey soils, on sandstone and rocky conglomerate.
NSW subdivisions: NWS, CWS, NWP
Other Australian states: Qld

AVH map***

The name refers to the thick phyllodes and twigs. Related to Acacia concurrens and A. leiocalyx, both of which have generally smaller phyllodes and less dense and paler flower spikes. A. crassa subsp. longicoma occurs in Queensland.