Acacia arafurica Tindale & Kodela, Telopea 5: 53; 55, fig. 1 & 56, fig. 2 (1992)
Shrub or tree to 4 m high. Branchlets terete, sparsely to densely pubescent-cobwebbed. Phyllodes obliquely ovate-rhomboidal, asymmetrical, flat, 1.5–3.4 cm long, 9–25 mm wide, with thickened margins, with a glanduliferous, acuminate and pungent apex, coriaceous, sparsely to moderately pubescent, with 3–5 prominent longitudinal veins, the minor veins strongly reticulate, a prominent gland on margin 1.6–5 mm above pulvinus. Spikes borne singly or in pairs, 10–21 mm long, 4–5.5 mm wide, golden. Flowers 5-merous; calyx 0.5–1.1 mm long, dissected 1/3–1/2 its length, the apices ciliolate; corolla 1.1–1.8 mm long, resinous, dissected 1/3–1/2 its length, glabrous, the apices thickened, incurved and often cucullate; ovary densely pubescent. Pods linear, moniliform, straight, 6.5–10.5 cm long, chartaceous, pubescent. Seeds longitudinal, 5–7 mm long; funicle-aril turbinate.
Occurs in the N.T. from Cobourg Penin. to the northern part of Arnhem Land. Grows in sands in swampy areas near coastal rivers and streams in gorge country, or sometimes in gravelly red sand in tall open forest. Flowers Apr.–May, July.
Is distinguished from A. sublanata by larger and slightly thicker phyllodes, spicate inflorescences and longer peduncles.
Type of accepted name
Anguldili Ck, Murgenella Rd, Arnhem Land, N.T., 25 May 1988, R.Hinz 2 ; holo: NSW; iso: BRI, CANB, DNA, K, PERTH.
Illustrations
M.D.Tindale & P.G.Kodela, loc. cit.
Representative collections
N.T.: near Tomkinson R., Maningrida, Apr. 1972, L.Bridgen (BRI, DNA); Maningrida, Arnhem Land, C.Coleman 31 (DNA); Nabarlek, 3 apr. 1988, R.Hinz (BRI, DNA, MEL); 12 km N [of] Three Ways, Cobourg Penin., D.Sivertsen 793 (DNA, PERTH).
(MDT & PGK)