Acacia besleyi Maslin
Acacia besleyi Maslin
Occurs in the Ravensthorpe Ra., south western W.A. Known from only a very few populations.
Rounded or obconicoften bushy, resinous shrub 1–3 m tall. Bark stringy and fibrous, grey externally but the new bark beneath reddish brown. Branchlets smooth or tuberculate, glabrous or ±sparsely appressed hairy. Phyllodes linear, gradually narrowed towards base, mostly shallowly incurved, erect, thinly coriaceous, acute and mucronate, 40–85 mm long, 2–3 (–3.5) mm wide, glabrous; longitudinal nerves 3–5, ±not raised, widely spaced, central nerve normally yellow and more evident than flanking brownish nerves, lateral nerves absent or few; gland (0.5–) 1–3 mm above pulvinus. Inflorescences 2-headed racemes; raceme axes (1–) 2–4 (–6) mm long; peduncles 5–8 mm long, normally glabrous; heads globular, 15–22-flowered, yellow; bracteoles 0.8–1 mm long, laminae acute to short-acuminate. Flowers 5-merous; sepals ±free and glabrous; petals ±glabrous. Pods narrowly oblong, 10–30 mm long, 3.5–5 mm wide, thinly coriaceous-crustaceous, straight to variously curved or sigmoid, often ±undulate, sparsely to densely short-pilose. Seeds longitudinal, normally obloid, 2.8–3.5 mm long; aril white.
Flowers: Oct.; mature pods Dec.
Grows in undulating country along drainage lines within rocky terrain in loamy clay or red clay over granite or quartz diorite. Occurs in Mallee scrub dominated by various species Eucalyptus over a rather dense understory shrub stratum dominated by species of Melaleuca.
Closest relative unknown but seems to have affinities with members of the A. flavipila group. See B.R.Maslin, Nuytsia for discussion. The first collection of the species was L. Diels 4890 which was cited in L.Diels & E.Pritzel, Bot. Jahrb. Syst. 35: 304 (1904), under A. heteroneura (presumably an error for A. heteroclita).
Acacia besleyi is listed as Priority One under Department of Parks and Wildlife Conservation Codes for Western Australian Flora.
Data derived from Flora of Australia Volumes 11A (2001), 11B (2001) and 12 (1998), products of ABRS, ©Commonwealth of Australia
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