Acacias of Australia

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Acacia hylonoma Pedley




Restricted to the area in which the type collection was made, SE of Cairns, Qld.


Tree to 15 m high; trunk to 20 cm d.b.h. Branchlets glabrous, lenticellate. Phyllodes narrowly elliptic, straight to shallowly recurved, often curved only towards apex, 8–14.5 cm long, (6–) 7–16 (–25) mm wide, acute, thinly coriaceous, glabrous, with 6–11 main nerves and numerous longitudinally anastomosing minor nerves in between; gland 3–15 mm above pulvinus. Inflorescences 1- or 2-headed racemes, up to 8 heads per axil; raceme axes 0.5–2 mm long, glabrous; peduncles 5–15 (–20) mm long, glabrous; heads globular, 5.5–6 mm diam., 25–35-flowered, golden. Flowers 5-merous; sepals free. Pods linear, raised over and not or scarcely constricted between seeds, to 9 cm long, 8–12 mm wide, coriaceous, transversely reticulate, glabrous. Seeds longitudinal, subcircular, 4.5–5 mm long, 3.5–4 mm wide, dull, brown; funicle slightly thickened into a narrowly clavate aril.


Grows in rainforest.


Qld: State Forest Reserve 933, K.Sanderson 202 (QRS).


Seemingly closely related to A. armillata. May resemble A. legnota, which has strongly falcate phyllodes, generally longer peduncles and non-reticulately nerved pods.

FOA Reference

Data derived from Flora of Australia Volumes 11A (2001), 11B (2001) and 12 (1998), products of ABRS, ©Commonwealth of Australia


Minor edits by B.R.Maslin & J.Rogers

R.S.Cowan, B.R.Maslin