Home
Go to Species Gallery Go to Image Gallery Go to Info Gallery Go to For Schools Go to Contact Go to About  
 

Acacia ammobia

Jump to a taxon beginning with the letter:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Acacia ammobia Maconochie , J. Adelaide Bot. Gard . 1: 180; 181, fig. 1 (1978)

Shrub or small tree, 1.5–7 m high. Bark splitting longitudinally or fibrous, grey to black. Branchlets angular or flattened, soon becoming terete, pale yellow or light brown, glabrous. Phyllodes linear, flat, 11–27 cm long, 4–9 mm wide, tapered toward apex and base, the apex drawn out into an elongate, slender, blunt tip, coriaceous, with subprominent midnerve and 8–11 minor non-anastomosing nerves per mm; gland 1, very inconspicuous, basal, 1–3 mm above pulvinus. Spikes single or paired on axillary shoots that sometimes become leafy, 2–5 cm long, densely flowered, yellow. Flowers 5-merous; calyx 1–1.25 mm long, dissected to 1/10–1/5, basally villous, the lobes with orange-brown scurf; corolla 1.3–1.6 mm long, dissected to 1/3–1/2, glabrous; ovary densely villous. Pods linear, slightly constricted between and strongly raised over seeds, 5.5–11 cm long, 2–3 mm wide, the margins nerve-like, coriaceous, dark brown, glabrous. Seeds longitudinal, narrowly oblong to broadly elliptic, dorso-ventrally flattened, 3–4 mm long, dark brown; areole small, surrounded by pale U-shaped pleurogram; funicle folded and thickened into cupular aril.

Occurs in south-western N.T., in the vicinity of Ayers Rock, from 80 km W to 50 km E of Ayers Rock; also in far northern S.A. near Indulkana. Usually in sandy soils, often on dunes, or in gravelly soils, with spinifex. Flowers Aug.–Oct.

Allied to A. undoolyana .

Details of ecology, utilisation, etc. of A. ammobia are given in J.W.Turnbull (ed.), Multipurpose Austral. Trees & Shrubs 94 (1986). Details of the aboriginal use of this fire-sensitive rare plant are given by P.Latz, Bushfires & Bushtucker 86 (1995).

Type of accepted name

c. 30 km E of Ayers Rock, N.T., 1 Sept. 1972, J.R.Maconochie 1646A ; holo: DNA n.v .; iso: BRI, CANB, MEL, PERTH; all n.v .

Synonymy

Racosperma ammobium (Maconochie) Pedley, Bot. J. Linn. Soc . 92: 247 (1986). Type: as for accepted name.

Illustration

J.R.Maconochie, loc. cit .

Representative collections

N.T.: 31.1 miles [50 km] E of Ayers Rock, 14 Sept. 1956, G.Chippendale s.n . (CANB, NSW, NT); c. 30 miles [48 km] E of Ayers Rock, 28 Aug. 1980, R.Horner s.n. (NSW); 50 miles [c. 80 km] W of Ayers Rock, P.K.Latz 823 (NSW, NT); 39 km E of Ayers Rock, L.Ulyatt 121 (BRI, NSW, NT, PERTH).  S.A.: upper slope of Indulkana Range, Anangu Pitjantjatjara Lands, P.J.Lang & P.D.Canty BS23-29140 (AD).

(NSW)

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