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Acacia pulviniformis

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Acacia pulviniformis Maiden & Blakely, J. Roy. Soc. W. Australia 13: 1; pl. 1, figs 1–7 (1928)

Prostrate shrub forming dense, intricate mats to 0.2 m high. Branchlets short, straight, spinescent, obscurely ribbed to ribless, appressed-puberulous to glabrous. Phyllodes straight to shallowly incurved with apices often slightly recurved, semi-terete to compressed and linear, 4–11 mm long, 0.4–0.7 mm wide, green, glabrous, nerveless or with obscure midrib; gland inconspicuous, c. 1 mm above pulvinus. Inflorescences rudimentary 1-headed racemes with axes <0.5 mm long; peduncles 2–6 mm long, slender, glabrous; basal bracts brown; heads globular, 2–2.5 mm diam., 6- or 7-flowered, golden. Flowers 4- or 5-merous; sepals irregularly 1/4–3/4-united. Pods somewhat tightly and irregularly coiled, to 1 cm long (unexpanded), 2.5 mm wide, thinly coriaceous, glabrous. Seeds longitudinal, turgid, widely elliptic to widely ovate, obliquely truncate adjacent to aril, 2–2.5 mm long, semi-shiny, dark brown.

Confined to an area bounded by Corrigin, Mt Barker and Pingrup, south-western W.A. Grows in gravelly clay loam, loam, sand or shallow sand over clay loam, in Wandoo woodland and frequently on disturbed roadsides.

Allied to A. acanthoclada and A. ferocior . Superficially similar to A. acanthaster .

The illustration of A. oxyclada in J.H.Maiden, J. & Proc. Roy. Soc. New South Wales 53: pl. 12, figs 1 & 2 (1920), contains discordant elements: in pl. 12, figs 1 & 2 are A. oxyclada and figs 3–9 are A. pulviniformis . Also in J.H.Maiden, op. cit. 196, the flowers and pods described in the table are those of A. pulviniformis .

Type of accepted name

Broomehill (sphalm. ‘Broome Hill’), W.A., 5 Sept. 1923, C.A.Gardner 2009 ; holo: NSW; iso: K (ex NSW but without collecting number), PERTH.

Synonymy

[ Acacia oxyclada auct. non F.Muell. ex Benth.: J.H.Maiden, J. & Proc. Roy. Soc. New South Wales 53: pl. 12, figs 3–9 (1920)]

Illustrations

J.H.Maiden, loc. cit .; J.H.Maiden & W.F.Blakely, loc. cit .; M.Simmons, Acacias Australia 2: 21 (1988).

Representative collections

W.A.: Dongolocking Rd near Wagin, R.S.Cowan A850 & R.A.Cowan (CANB, K, NY, PERTH, US); 8 km W of Corrigin, H.Demarz 11073 (PERTH); 5 km N of Tambellup towards Broomehill, B.R.Maslin 4004 (PERTH); 3.5 km NW of Ongerup, K.Newbey 975 (PERTH).

(BRM)

WATTLE Acacias of Australia CD-ROM graphic

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.

Page last updated: Tuesday 11 September 2018