Acacia sp. aff. rigens (Gerang Gerung)

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v)

Spreading shrub to 2 m high; branchlets terete, slightly ribbed at apices, white-tomentose, hairs appressed. Phyllodes terete, 2–6 cm long, 0.8–1 mm diam., straight to slightly curved, with sparse subappressed hairs, sometimes glabrous between veins, apex sharply and coarsely pungent and often curved; veins numerous, closely parallel, raised; gland obscure, basal. Peduncles 1–2 mm long, 2 per node, with subappressed or crisped hairs; heads globular, 3–5 mm diam., 9–15-flowered, yellow, sometimes resinous. Flowers 4- or 5-merous; sepals usually free. Pods linear, raised over and constricted between seeds, 3–6 cm long, curved, often strongly so, usually with a few appressed silky hairs; seeds longitudinal, c. 2 mm long. Flowers Sep.–Nov.

Recorded from the western Wimmera mainly between the Little and Big Deserts from Dimboola to Kaniva. This taxon was propagated at the Wail nursery in the early 1950’s and plants grown at this nursery are likely to have been planted widely in the Wimmera region.

Treated by the Australian Plant Name Index (APNI) as Acacia sp. Gerang Gerung (M.G.Corrick 6451).

Similar in most respects to Acacia rigens, and distinguished from it by the close covering of appressed or subappressed whitish hairs and more or less terete branchlets and subappressed to weakly spreading hairs on the phyllodes. Typical A. rigens has distinctly ribbed branchlets that have minute appressed hairs between the raised, glabrous ribs, and hairs on phyllodes and peduncles are minute and appressed. Furthermore, flower heads appear to be smaller than those of typical A. rigens, with fewer 15 flowers, (cf. 20–30-flowered in typical A. rigens).   

Created by: Andre Messina, 2016-04-06
Updated by: Andre Messina, 2016-04-06
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life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Fabales
family Fabaceae
genus Acacia
Higher taxa