Acacia calcarata Maiden & Blakely, J. & Proc. Roy. Soc. W. Australia 13: 2; pl. 2, figs 7–12 (1928)
Spreading, rigid shrub 0.5–1.5 m high. Branchlets ribless, reddish at extremities, ageing light grey, glabrous. Stipules persistent, spinose, 1.5–3 mm long, normally shallowly recurved. Phyllodes ascending to erect, commonly shallowly curved, frequently slightly kinked at the gland, pentagonal-quadrangular in section when dry, 20–40 mm long, c. 1.5 mm wide, pungent, rigid, glaucous, glabrous, 5-nerved but the adaxial 2 frequently coalescing on lower 1/3 of phyllode; gland c. 1 mm above base, 1–1.5 mm long; pulvinus much-reduced, basally dilated. Inflorescences rudimentary normally 2-headed racemes with axes <0.5 mm long; peduncles 3.5–7 mm long, crimson, glabrous; heads globular, 16–22-flowered, golden. Flowers 5-merous; sepals c. 1/2-united. Pods narrowly oblong, flat, to 7 cm long, c. 1 cm wide, thinly crustaceous, blackish, glabrous. Seeds longitudinal, elliptic, c. 12 mm long, compressed; aril small, pileiform.
Occurs from near Bullabulling and Kalgoorlie SE to Woodline, W.A. Grows in sometimes rocky sandy loam, in open Mallee scrub or tall shrubland.
Formerly confused with A. inamabilis which has green, finely ribbed, lenticellate branchlets, green phyllodes, a pulvinus which is not flared basally, yellow to light brown peduncles and much narrower pods. Phyllodes and branchlets resemble those of A. asepala .
Type of accepted name
Coolgardie district, W.A., L.C.Webster s.n .; holo: NSW; iso: MEL.
J.H.Maiden & W.F.Blakely, loc. cit .
W.A.: Woodline, c. 110 km ENE of Norseman, G.J.Keighery 3043 (PERTH); 12 km E of Coolgardie, B.R.Maslin 1884 (AD, K, NSW, NT, PERTH); 42 km N of Widgiemooltha, R.A.Saffrey 884 (PERTH).