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Acacia pubescens

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Acacia pubescens (Vent.) R.Br., in W.T.Aiton, Hortus Kew. 2nd edn, 5: 467 (1813)

Downy Wattle

Weeping shrub 1–5 m high. Bark smooth, brownish grey. Branchlets terete with low ridges, dark brown or dark red-brown, villous. Young foliage-tips silvery or yellowish white, villous. Leaves herbaceous, bright green above, paler beneath, subsessile with basal pinnae arising immediately or rarely to 0.7 mm above pulvinus, sometimes with a gland at basal pinnae; rachis 1.5–6.6 cm long, ridged, villous, mostly eglandular, sometimes with a spherical or ellipsoidal, pale brown or blackish gland at base of terminal pinnae or rarely 2–6 upper pinnae; pinnae 3–12 pairs, 0.5–2.5 cm long, basal pairs shorter than others; pinnules 5–20 pairs, cultrate to oblong, 1.5–5 mm long, 0.4–1 mm wide, 1-veined, glabrous, apex acute or subacute. Inflorescences in axillary racemes or terminal false-panicles. Heads 8–16-flowered, golden. Pods 1.5–8 cm long, 4–6.5 mm wide, subcoriaceous, bluish, bluish brown or almost black, pruinose.

Endemic to N.S.W. on the lower Blue Mtns in the Bilpin district, and on the Cumberland Plain from Pitt Town S to George’s R. Grows in open forest or woodland, scrub-woodland and in Melaleuca scrub, in gravelly clay or sandy soils, often on Wianamatta Shale. Flowers Aug.–Oct.; fruits Oct.–Jan.

Acacia pubescens was one of the first Australian acacias cultivated in Europe, being grown at Malmaison near Paris in the garden of the Empress Josephine. This is a rare and endangered species since much of its original habitat in western Sydney has been destroyed for housing.

Acacia pubescens occasionally hybridizes with A. baileyana .

Type of accepted name

Synonymy

Mimosa pubescens Vent., Jard. Malmaison 1: t. 21 (1803). [‘Arbrisseau originaire de la Nouvelle Hollande’ in protologue] . Type: as for accepted name.

Mimosa pubigera hort. ex Poir., Encycl. Meth. (Bot.) Suppl . 1: 71 (1810), based on Mimosa pubescens Vent.

Acacia mollissima hort. ex Willd., Enum. Pl. pt 2 : 1053 (1809); Mimosa mollissima (Willd.) Poir., Encycl. Meth. (Bot.) Suppl . 1: 46 (1810). Type: Nova Hollandia, Herb. Willdenow No. 19152; holo: B.

Illustrations

Anon., Bot. Mag . 30: t. 1263 (1809), as Mimosa pubescens ; A.Fairley & P.Moore, Native Pl. Sydney District 118, pl. 341 (1989).

Representative collections

N.S.W.: Mountain Lagoon, C.Dunn 25 & R.G.Coveny (B, BM, CHR, MO, PERTH, TL, UC, US, Z); Wetherill Park, W of Smithfield, O.D.Evans (NSW60631); Long Neck Lagoon Nature Reserve, D.Fortescue 1011 & J.Benson (B, MO, NSW, PERTH); 1.6 km N of Pitt Town, M.D.Tindale s.n. (NSW53064); Chester Hill, M.D.Tindale s.n. (NSW8114).

(MDT & PGK)

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: Thursday 22 June 2023