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Acacia rossei

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Acacia rossei F.Muell., Victorian Naturalist 10: 55 (1893)

Spindly, open, sparingly branched, glabrous, somewhat viscid shrub 1–3 (- 5) m high. Branchlets roughened by obvious stem-projections where phyllodes have fallen. Stipules setaceous, 2.5–4.5 mm long. Phyllodes crowded, patent to erect, linear, straight to shallowly curved, flat or (when dry) quadrangular, 1–3 cm long, 1–1.5 mm wide, obliquely and excentrically mucronate, slightly thickened, green; midrib and abaxial nerves resinous (resin often in beads); gland basal. Inflorescences comprising terminal false racemes which grow out at anthesis; peduncles 2–3 cm long, normally subtended by immature phyllodes, the base ebracteate; heads globular, densely 65–75-flowered, golden. Flowers 5-merous; sepals united at base. Pods narrowly oblong, 2.5–5 cm long, 7–11 mm wide, crustaceous, roughened by prominent brown excrescences. Seeds transverse to oblique, oblong to widely elliptic, 4–5 mm long, arillate.

Occurs from Kellerberrin E to Yellowdine and S to near Hyden, south-western W.A. Common where it occurs, especially in disturbed sites, e.g. roadverges, regeneration following fire. Grows in tall shrubland, usually in yellow sand.

Appears most closely related to A. glutinosissima . A. handonis (Qld) has similar prominent excrescences on the pod valves.

Type of accepted name

interior of south-western W.A., 1893, comm. W.Webb ; holo: MEL; iso: TCD (labelled ‘Interior of Western Australia 1893’ by F.Mueller).

Illustrations

M.Simmons, Acacias Australia 2: 79 & pl. 27 (1988).

Representative collections

W.A.: c. 34 km NNE of Hyden, B.Barnsley 997 (PERTH); 21 km E of Southern Cross, M.I.H.Brooker 2050 (PERTH); 8.5 km W of Moorine Rock on Great Eastern Hwy, B.R.Maslin 4476 (K, MEL, PERTH, TLF).

(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: Friday 13 December 2019