Kingdom: Plantae
(Unranked): Angiosperms
(Unranked): Eudicots
(Unranked): Rosids
Order: Fabales
Family: Fabaceae
Genus: Acacia
Species: A. pravissima
Binomial name: Acacia pravissima
Synonyms: Acacia pravissima, Racosperma pravissimum
Common name: Oven's wattle, Wedge-leaved wattle, Alpine wattle, Ovens wattle, Wedge leaved wattle. oven wattle, Tumut wattle, wedge leaf wattle, Wedge-leaf wattle, 

Acacia pravissima is a species of evergreen shrub in the Fabaceae family native to Victoria, the South West Slopes and Southern Tablelands of New South Wales, Australia. 
A. pravissima is an evergreen shrub that grows  5m or more, with crowded, triangular leaf-like phyllodes (serves the functions of the leaf.) and racemes of small rich yellow flower-heads in late winter and early spring. Some branches have thorns.

Acacia pravissima (alpine wattle) is an emerging weed in New Zealand and is starting to cause concern. It is a potentially serious threat to New Zealand biodiversity yet lack of evidence to support a weedy classification means that they are not regarded uniformly across the country. Many states in Australia it has a weed classification.

The photos below are of wild plants growing roadside
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A tree in full flower.Acacia pravissima.JPG

Acacia pravissima-001.JPG

Acacia pravissima-002.JPG 

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Thorns are visible.
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Thanks to Wikipedia for text and information: