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Acacia botrydion

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Acacia botrydion Maslin, Nuytsia 4: 30; 31, fig. 1 (1982)

Craggy, intricate shrub 0.5–1.3 m high. Branches minutely puberulous, divided into short, divaricate, coarsely pungent branchlets. Phyllodes elliptic to widely elliptic, 9–15 mm long, 4–12 mm wide, undulate and patent, acute, mucronate, somewhat pungent, green to subglaucous, minutely puberulous, 1-nerved; lateral nerves obscure. Inflorescences racemose in upper axils, 1 or 2 per axil, sometimes paniculate due to phyllode suppression; raceme axes 5–20 mm long, sparsely minutely puberulous; peduncles twinned, c. 10 mm long, red-brown, sparsely minutely puberulous; heads globular, 40-flowered, light golden. Flowers 5-merous; sepals free, linear-spathulate. Pods strongly arcuate to 1 1/2 coiled, to 4 cm long (expanded length), c. 4 mm wide, thinly crustaceous, red-brown, glabrous. Seeds longitudinal, oblong-elliptic, 3–4 mm long, turgid, dull, brown, arillate.

Restricted to the Wongan Hills, W.A., where it is relatively common. Grows on hills in lateritic soil in mallee.

Sympatric with, and often confused with A. semicircinalis ; see B.R.Maslin, Nuytsia 4: 30 (1982), for further details.

Type of accepted name

c. 12.5 km NW of Wongan Hills towards Piawaning, W.A., 9 Sept. 1975, B.R.Maslin 3805 ; holo: PERTH; iso: BRI, CANB, G, K, MEL, NSW, NY, PERTH.

Synonymy

Acacia semicircinalis Maiden & Blakely, J. & Proc. Roy. Soc. W. Australia 13: 11 (1928) p.p. , as to Wongan Hills, 7 Oct. 1903, A.Morrison s.n . (syn: NSW) and pl. 8, fig. 6.

Illustration

B.R.Maslin, Nuytsia 4: 31, fig. 1 (1982).

Representative collection

W.A.: type locality, B.R.Maslin 3382 (AD, BRI, 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: Thursday 22 June 2023