Citation: J. H. Maiden & W. F. Blakely, J.R. Soc. W. Aust. 13:15 t.ll (1927).

Derivation: validus (L.)—strong, well developed; nervis (L.)—nerve.

Synonymy: A. notabilis var. validinervia (Maiden & Blakely) J. M. Black, Fl.S. Aust. ed. 2, 534 (1952). Racosperma validinervium (Maiden & Blakely) Pedley, Bot. J. Linn. Soc.(London) 92:249 (1986).

Common name: None

Description:
Erect, small, glaucous shrubs 1-2 m high with a number of thin willowy stems; branchlets smooth, glaucous or mealy white, angular towards the ends but soon becoming terete, often forming small clumps or thickets. Phyllodes obliquely obovate-lanceolate, 8-13 cm long 1.5-5 cm broad, coriaceous, thick, mid-vein prominent, numerous prominent anastomosing secondary veins which turn downwards to meet the margins, margins thickened and vein-like, apex obtuse or with a small oblique point, much contracted at the base into the elongated pulvinus; glands small situated just above the pulvinus.

lnflorescences in axillary glabrous racemes which are sometimes longer than phyllodes, consisting of 5-20 heads; flower-heads golden yellow, 50-75-flowered; peduncles short, thick, c. 5 mm long; flowers 5-merous. Legumes linear, 7-10 cm long, c. 7 mm broad, usually curved, raised over the seeds, margins constricted between the seeds. Seeds longitudinal or slightly oblique in legume; funicle long, encircling the seed in a double fold.

Distribution:  Occurs in the North-Western region in the far corner near Mount Davies and eastwards to the Musgrave Ranges; rather infrequent. Found in low open woodland or hummock grassland, associated with Eucalyptus gamophylla and Triodia basedowii. Soils; red earthy sands or shallow red firm sand. Rainfall 150-200 mm. Also W.Aust. and N.T. S.Aust.: NW. Flowering time: July — August.

SA Distribution Map based on current data relating to specimens held in the State Herbarium of South Australia

Biology: No text

Related taxa: Acacia notabilis (sp. 53) which differs in its less conspicuous reticulate lateral veins and seeds transverse in legume.

Cultivation: An interesting plant with large, glaucous phyllodes and large, golden flower-heads arranged in conspicuous racemes. The species would be worthy of cultivation and suitable for dry inland areas.

Author: Not yet available

Source: