Acacias of Australia

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Acacia leioderma Maslin




Occurs from the Mount Barker–Albany area E to Fitzgerald R. Natl Park, south-western W.A.


Shrub 0.5-2 m high. Branchlets prominently ribbed, commonly red to brown, glabrous. Stipules 2.5-4 mm long. Pinnae 2 (-3) pairs, 3-4 mm long (proximal pinnae), 10-30 mm long (distal pinnae); petiole 1-2 mm long; rachis 3-10 mm long, prominently ribbed adaxially; pinnules 2 pairs (proximal pinnae), 4-10 pairs (distal pinnae), narrowly oblong, 5-12 mm long, 1.5-5 mm wide, flat or slightly recurved, green, glabrous; gland on rachis at base of pinnae, sessile, prominent, with additional smaller glands normally on distal pinna-rachae at base of uppermost 1 or 2 pairs of pinnules. Inflorescences simple, 1-3 per axil; peduncles (6-) 10-20 (-40) mm long, glabrous; heads globular, large, 28-35-flowered, light golden. Flowers 5‑merous; calyx often dark brown; sepals 5/6-united; petals 1-nerved. Pods 3-4 cm long, 6-8 mm wide, glabrous. Seeds transverse, oblong to elliptic, 2-3 mm long.


Favours sandy loam near watercourses in forest, and on laterite, mostly in coastal heath, scrub and shrubland.


W.A.: King George Sound, R.Brown ‘4320’ (BM, K); Swan R., J.Drummond 5: 18 (FI, G-DC: sphalm. ‘coll. 4’, K, MEL, OXF, P, PERTH); Mt Manypeaks, D.Edinger 226B (PERTH); lower Fitzgerald R., A.S.George 9922 (PERTH).


A member of the ‘Acacia browniana group’, most closely related to A. empelioclada. Specimens from the eastern extremity of the range, i.e. Fitzgerald R. Natl Park, may ultimately prove to be glabrous variants of A. empelioclada.

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 J.Reid