Acacia cerastes Maslin, Nuytsia 10: 173 (1995)
Much-branched, intricate, glabrous shrub to 1.5 m high. Branchlets tortuous, terete, striate, green or brown. Phyllodes rudimentary, reduced to minute, continuous, terete, horn-like projections to 1 mm long, usually recurved, with nerves not evident or very obscure on either side of the gland, terminated adaxially by a prominent, oblique gland, the mucro 0.5- 1 mm long, rigid and subulate but not pungent. Inflorescences rudimentary 1-headed racemes with axes <0.5 mm long and brown bracts persistent at base; peduncles 3–4 mm long; heads globular, 30-flowered, golden; bracteoles dark brown, slightly exserted in buds. Flowers predominantly 5-merous; sepals free or partially united, linear to linear-spathulate, sometimes unequal. Pod valves (dehisced) linear, constricted between seeds and obviously rounded over them, to 4.5 cm long, 3- 4 mm wide, thinly coriaceous. Seeds not seen.
Known only from Mount Gibson and Ninghan Stns, W.A, where it occurs on rocky hills.
Type of accepted name
Mount Gibson Stn, between Wubin and Paynes Find, W.A., 29 Aug. 1976, B.R.Maslin 4226 ; holo: PERTH; iso: CANB, K.
W.A.: Mount Gibson, E of Perenjori, Nov. 1952, C.A.Gardner s.n . (MEL, PERTH); Warrdegga Hill, Ninghan Stn, c. 20 km SW of Paynes Find, S.Patrick 1111 (PERTH).