Acacias of Australia

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Acacia diminuta Maslin




Known only from a few scattered localities between Jerramungup and Scaddan (c. 50 km NNW of Esperance) in south-western W.A.


Intricate, spreading, glabrous shrub to 0.2 m high. Branchlets light grey, coarsely pungent. Phyllodes sometimes a few fasciculate on nodose branchlets, ±linear to oblong, mostly reflexed and straight to shallowly incurved, flat but thick and sometimes appearing ±subterete, 3–5 (–6) mm long, (0.5–) 0.7–1 mm wide, mucronate with mucro excentric and slightly upturned, with the 2-nerved upper margin flat and c. 0.5 mm wide, and other nerves absent or obscure; gland on upper margin near middle of phyllode, often absent; pulvinus short (0.3–0.4 mm long) but distinct. Inflorescences simple, 1 per axil; peduncles (1.5–) 2.5–4 mm long; basal bract solitary; heads globular, 2 mm diam., c. 15-flowered, cream or yellow. Flowers 5‑merous; sepals free. Pods (immature) slightly constricted between seeds, to c. 2 cm long, 4–5 mm wide. Seed (immature) longitudinal, oblong-elliptic, 5 mm long, dull, brown.


Grows in sandy clay.


W.A.: W of Scaddan, M.A.Burgman 4562 (PERTH); between Esperance and Norseman, J.W.Wrigley WA/68 5318 (PERTH).


Relationships uncertain.

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.Rogers