Acacia rhetinocarpa J.M.Black, Trans. & Proc. Roy. Soc. S. Australia 44: 193, t. 10 (1920)
Resinous shrub 0.5–2 m high. Branchlets terete, sparsely hairy. Phyllodes on short stem-projections, inequilaterally obtriangular-obovate to widely obovate-obdeltate, 2–5.5 mm long, 1.5–3.5 mm wide, rounded and excentrically thick-apiculate at apex, slightly thickened, sometimes obviously glandular-punctate, glabrous; midrib obscure or absent; lateral nerves normally absent; gland small, 1–2 mm above pulvinus. Inflorescences simple, 1 per axil; peduncles 4–7 mm long, slender, glabrous; basal bract persistent; heads globular, 12–15-flowered, golden. Flowers 5-merous; sepals 1/4–1/2-united. Pods curved to subtortuous, 1–3.5 cm long, 2–3 mm wide, thinly coriaceous, glabrous. Seeds longitudinal, oblong, 3.5 mm long, slightly shiny, brown; aril galeiform, partially sheathing end of seed.
Discontinuous, occurring in the Arno Bay area, Eyre Penin., the Curramulka area, Yorke Penin., and between Gilberts and Monarto South, S.A. Usually grows in open scrub in calcareous sand or sandy loam.
Related to A. glandulicarpa which has 2-nerved phyllodes broadest below or near the middle and densely pilose pods. Phyllode shape and size may be similar to some forms of A. acinacea which is a non-resinous shrub further distinguished by its gland-bearing phyllode apices and free sepals. Superficially similar to A. brachyclada from W.A.
Regarded as a vulnerable species by J.Leigh et al ., Rare Threatened Austral. Pl . 84 (1981).
Type of accepted name
Monarto South, S.A., 25 Aug. 1919, E.H.Ising 909 ; syn: AD 98243001, 98243005 to 98243008; Monarto South, S.A., 3 Dec. 1919, E.H.Ising s.n .; syn: AD98243001, K, MEL615145.
Illustration
D.J.E.Whibley & D.E.Symon, Acacias S. Australia 2nd edn, 51 (1992).
Representative collections
S.A.: 33 km SW of Cowell towards Arno Bay, J.D.Briggs 554 (AD); 11 km S of Monarto South on the road to Ferries- McDonald Conservation Park, B.R.Maslin 5975 (AD, PERTH); Curramulka road W of Pine Point, 31 Aug. 1976, W.L.Quinn s.n. (AD).
(BRM)
The information presented here originally appeared on the WATTLE CD-ROM which was jointly published by the Australian Biological Resources Study, Canberra, and the Department of Parks and Wildlife, Perth; it was produced by CSIRO Publishing from where it is available for purchase. The WATTLE custodians are thanked for allowing us to post this information here.
