| Cowell spine-bush | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Clade: | Mimosoideae |
| Genus: | Acacia |
| Species: | A. hexaneura |
| Binomial name | |
| Acacia hexaneura P.Lang & R.S.Cowan | |
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| Occurrence data from AVH | |
Acacia hexaneura, also known as Cowell spine-bush [1] or the six-nerve spine-bush, [2] is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to parts of South Australia. [3]
The rigid and prickly shrub often has a roughly rounded habit and grows to a maximum height about 1 m (3 ft 3 in) and a width of 2 m (6 ft 7 in). Like most species of Acacia it has phyllodes rather than true leaves. The phyllodes are attached directly by the base to the branchlet are rigid, straight or slightly recurved. The compressed phyllodes have a length of around 17 mm (0.67 in) and a width of 2 mm (0.079 in) with six distinct veins, one of each margin and two on each face. The veins quite raised from the surface with well-defined ridges. It blooms between July and September producing simple inflorescences with spherical golden-yellow flower-heads. [1]
The species was first formally described by the botanists Richard Sumner Cowan and P.J.Lang in 1990 as part of the work Plant Portraits as published in the Journal of the Adelaide Botanic Gardens. It was reclassified as Racosperma hexaneurum by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006. [2] The specific epithet is derived from the Greek words hex meaning six and neura meaning nerves in reference to the six nerves running along the length of the phyllodes. [1]
The shrub has a limited distribution in the north eastern part of the Eyre Peninsula of South Australia from around Kimba and Cowell where it is usually situated on small quartzite hills often combined with limestone or ironstone bedrock and growing in gravelly loams and sandy soils that are well drained. [1]
Acacia notabilis, known colloquially as mallee golden wattle, Flinders wattle or stiff golden wattle, is a species of Acacia native to Australia.
Acacia levata is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to small arid area of western Australia.
Acacia multispicata, commonly known as spiked wattle, is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to south western Australia.
Acacia repanda is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to a small area in western Australia.
Acacia rhodophloia, commonly known as minni ritchi or western red mulga, is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to a large area of arid central western Australia. The Indigenous group the Kurrama peoples know the plant as mantaru.
Acacia tetraneura is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia quinquenervia is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia
Acacia simulans is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia adenogonia is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to north western Australia.
Acacia aulacophylla is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to western Australia.
Acacia campylophylla is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a part of south western Australia.
Acacia colletioides, commonly known as wait-a-while, pin bush and spine bush, is a shrub of the genus Acacia and the subgenus Plurinerves that is native to Australia.
Acacia nyssophylla, commonly known as pin bush, wait a while and spine bush, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a large area of central and south-western and southern Australia.
Acacia patagiata, also commonly knowns as salt gully wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia.
Acacia pelophila is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area along the west coast of western Australia.
Acacia speckii is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to a small area in central western Australia.
Acacia spongolitica is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia.
Acacia undosa is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of south western Australia.
Acacia tarculensis, commonly known as granite wattle, granite bush or steel bush is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is native to south central Australia.
Acacia rhigiophylla, commonly known as dagger-leaf wattle, is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is native to southern Australia.