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Acacia arcuatilis

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Acacia arcuatilis R.S.Cowan & Maslin, Nuytsia 12: 472 (1999)

Low, spreading shrub commonly 0.4- 0.8 m high. Branchlets sericeous between red-brown or yellow-brown resin-ribs at extremities. Phyllodes shallowly to strongly incurved (sometimes into a complete circle), terete, mostly 3- 6 cm long, 0.6- 1.2 mm diam., grey-green to subglaucous, resinous, appressed-hairy in the shallow, narrow furrows between the 8, broad, flat-topped nerves which are not or scarcely raised. Inflorescences simple, normally 2 per axil; heads sessile and globular, 4- 5 mm diam., 10- 22-flowered, golden. Flowers 4-merous; sepals 2/3- 3/4-united. Pods linear, slightly raised over and slightly constricted between seeds, straight to shallowly curved, to 6 cm long, 1.5- 2 mm wide, thinly coriaceous, minutely appressed-puberulous on lateral faces, resinous; margins wide. Seeds longitudinal, elliptic, 2- 2.5 mm long, glossy, mottled; aril conical, as long as seed.

Occurs from near Bindi Bindi S to near Ongerup, E to Hyden, W.A. Grows in sand, sandy loam and loam, in mallee open scrub and occasionally in open heath.

Very closely related to A. cracentis which is distinguished by its straighter, more slender phyllodes with normally single heads within their axils. Also related to A. aprica . Superficially resembles A. obesa . In the past some specimens which are now attributable to A. arcuatilis have been called A. merinthophora .

Type of accepted name

6.5 km S of Kulin, W.A., 27 Aug. 1973, B.R.Maslin 3424 ; holo: PERTH; iso: AD, CANB, K, MEL, NSW, NY.

Representative collections

W.A.: 7.5 km S of Great Northern Hwy at Bindi Bindi, R.Cumming 3593 (PERTH); 7 km S of Kulin towards Kukerin, B.R.Maslin 4376 (PERTH); c. 2 km due W of Camel Peaks, B.R.Maslin 5770 (BRI, G, PERTH); 20 km NW of Ongerup, N.Stevens KRN9492-1 (MELU, PERTH).

(RSC & 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