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Electronic Flora of South Australia
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Electronic Flora of South Australia species Fact Sheet

Acacia mutabilis


Citation: B. Maslin (in press)

Derivation: mutabilis (L.)—changeable; refers to the varied form of the phyllodes; angustifolia (L.)—angusti narrow and folia a leaf; refers to a narrow-leaved subspecies.

Synonymy: Not Applicable

Common name: None

A prostrate or mounded shrub to 1 m tall, branchlets angular with a distinct rib descending from the base of each phyllode, glabrous or with a few minute hairs in phyllode axils. Stipules to 1 mm long, minute, narrow triangular.

Phyllodes 2-4 cm long, 1.5 mm wide, linear, glabrous, irregularly 5-angled, upper margin of phyllode (bearing gland) flattened between two veins, two marginal veins and lower margin with a single vein; one report states grey-green, apex acute, pungent, glands inconspicuous about 1/3 along the length of the phyllode.

Inflorescence a very short axillary raceme bearing 1-3 globular heads of flowers; peduncles about half the length of the phyllode; flower-heads about 5 mm diameter, about 20-30-flowered, yellow, flowers 5-merous.

Legumes not seen.

Distribution:  Only collected from the Nullarbor region near the Western Australian border and E of Eucla. Bates (1985) states common along the highway for 50 km. The only ecological note states that the species was found in mallee association on skeletal, brown clay-loam over limestone. Also occurs in W.Aust.

Flowering time: September — October (3 collections only).

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

Biology: No text

Taxonomic notes: This species was first collected in S.Aust. in 1976 and is little known.

Cultivation: Not known to be in cultivation. It would appear to be a floriferous species for arid and perhaps submaritime sites with alkaline soils.

Author: Not yet available


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