Named after prominent engineer and amateur botanist Henry Deane (1847–1924).

Green Wattle, Deane's Wattle; Cunningham et al. (1981) also give Fern-leaf Wattle, Black Wattle, Dean's Green Wattle.

Shrub or tree 1.5–7 m high, with a single trunk or usually many-stemmed. Bark smooth, green, grey, brown or brownish purple. Branchlets slightly flattened, acutely angled towards apex, densely appressed-puberulous with grey or yellow hairs to glabrous. Young foliage-tips yellow, golden or rust-coloured, densely puberulous. Leaves bipinnate, coriaceous, dark or light green; petiole above pulvinus 0.4–3 cm long, flattened vertically, densely grey- or golden-puberulous, with a large gland to 5 mm below basal pinnae; rachis (0.7–) 1.5–6.5 cm long, flattened vertically, with depressed oblong or spherical grey-puberulous jugary glands at base of all or most pairs of pinnae, often with 1–3 often contiguous, interjugary glands between some or all pairs of pinnae; pinnae (1–) 3–12 pairs, 0.7–6.5 cm long, with lower pairs slightly smaller than others; pinnules (7–) 11–32 (–45) pairs, widely spaced, linear to narrowly oblong, 1–12 mm long, 0.4–1.3 mm wide, with upper surface glabrous or slightly puberulous and lower surface with appressed golden or white hairs or glabrous, broadly rounded or truncate apically. Inflorescences in axillary racemes, or terminal or axillary false-panicles. Peduncles 1–5 (–7) mm long, normally with golden to whitish appressed hairs. Heads globular, 3–5.5 mm diam., 15–30-flowered, cream-coloured to pale yellow or yellow. Pods linear to narrowly oblong, slightly to deeply and often irregularly constricted between seeds, 3.5–18 cm long, 5–12 mm wide, coriaceous, black or dark brown, smooth or slightly rough, with appressed grey, yellow or fawn hairs, later glabrescent.

Native.

Widespread in inland southern Queensland, central New South Wales and central Victoria. Acacia deanei subsp. deanei has a more northerly distribution than subsp. paucijuga. Intermediates are very common in New South Wales where both subspecies are wayside trees or shrubs especially in the Pilliga, Riverina and Central Western Slopes.

Details of the ecology of Acacia deanei are given in G.M. Cunningham et al., Plants of Western New South Wales 359–360 (1981) and J.C. Doran et al., in J.C. Doran & J.W. Turnbull (eds), Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics 140–141 (1997).

Details on the utilisation of Acacia deanei are given in G.M. Cunningham et al., Plants of Western New South Wales 359–360 (1981) and J.C. Doran et al., in J.C. Doran & J.W. Turnbull (eds), Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics 140–141 (1997).

Acacia deanei (R.T.Baker) M.B.Welch, Coombs & McGlynn, Journal and Proceedings of the Royal Society of New South Wales 65: 227 (1932); Acacia decurrens var. deanei R.T.Baker, Proceedings of the Linnean Society of New South Wales 21(3): 348 (1896); Racosperma deanei Pedley, Botanical Journal of the Linnean Society 92: 248 (1986). Type: "Gilgandra, N.S.W. (Mr Henry Deane)", not located.

There are 2 subspecies:

Pinnules mostly 1.5–5 mm long, puberulous especially beneath; upper pinnules mostly obtuse at apex; petiole mostly 0.5–1.5 cm long; corolla usually with golden hairs towards petal-apices or sometimes glabrous; calyx shortly lobed, with ribs of tube hairy or glabrous; rachises with 1 or 2 interjugary glands often between a few pairs of pinnae ................... subsp. deanei

Pinnules mostly 4–12 mm long, glabrous or with scattered hairs; upper pinnules mostly truncate at apex; petiole 0.5–3 cm long; corolla ± glabrous; calyx barely lobed, with tube ± glabrous; rachises with 1–3 interjugary glands between all or most pairs of pinnae ........................ subsp. paucijuga

Armitage, I. (1978). Acacias of New South Wales. (New South Wales Region of the Society for Growing Australian Plants: Sydney).

Cunningham, G.M., Mulham, W.E., Milthorpe, P.L. & Leigh, J.H. (1981). Plants of Western New South Wales. (D. West, Government Printer).

Entwisle, T.J., Maslin, B.R., Cowan, R.S. & Court, A.B. (1996). Mimosaceae, pp. 585–658, in N.G. Walsh & T.J. Entwisle (eds), Flora of Victoria Volume 3, Dicotyledons Winteraceae to Myrtaceae. (Inkata Press: Melbourne). See VICFLORA (Flora of Victoria) at https://vicflora.rbg.vic.gov.au/flora/taxon/9ea8dce7-a5ee-4ea5-bf33-6393a08e8fb0 [accessed May 2018]

Hall, N. & Johnson, L.A.S. (1993). The Names of Acacias of New South Wales with a Guide to Pronunciation of Botanical Names. (Royal Botanic Gardens Sydney: Sydney).

Kodela, P.G. (2018). Acacia deanei, in New South Wales Flora Online: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Acacia~deanei [accessed May 2018]

Kodela, P.G. & Harden, G.J. (2002). Acacia, pp. 381–476, in G.J. Harden (ed.), Flora of New South Wales Volume 2, 2nd edn. (University of New South Wales Press: Sydney).

Pedley, L. (1983). Mimosaceae, pp. 332–386, in T.D. Stanley & E.M. Ross, Flora of South-eastern Queensland Volume 1. (Queensland Department of Primary Industries: Brisbane).

Tame, T. (1992). Acacias of Southeast Australia. (Kangaroo Press: Kenthurst).

Tindale, M.D. & Kodela, P.G. (2001). Acacia deanei, pp. 232–234, in A.E. Orchard & A.J.G. Wilson (eds), Flora of Australia Volume 11A, Mimosaceae, Acacia part 1. (CSIRO Publishing: Melbourne). Included in World Wide Wattle at http://worldwidewattle.com/speciesgallery/deanei.php [accessed May 2018]

Revised edition, May 2018. Adapted from M.D. Tindale & P.G. Kodela, Acacia deanei, Flora of Australia 11A: 232–234 (2001). Revised by P.G. Kodela (May 2018).