Acacia acanthoclada
Harrow wattle | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Fabales |
Family: | Fabaceae |
Subfamily: | Caesalpinioideae |
Clade: | Mimosoid clade |
Genus: | Acacia |
Species: | A. acanthoclada
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Binomial name | |
Acacia acanthoclada | |
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Occurrence data from AVH |
Acacia acanthoclada, commonly known as harrow wattle, is a low, divaricate, highly branched and spinescent shrub that is endemic to Australia.
Description[]
It grows up to 2 metres high and has phyllodes which measure 0.2 to 0.6 cm long and 1 to 2 mm wide. The phyllodes are straight, narrow-cuneate, slightly notched at the apex, and feature prominent midveins. Branchlets are terete, whitish and densely pubescent, As the branch grows it becomes glabrous and terminates in a rigid spinose point. The bark is grey, white or occasionally greenish.
The golden-yellow flowerheads, on 5–15 cm long peduncles, appear at the phyllode axils. Flower parts are pentamerous, with the sepals fused into a synsepalous calyx. Flowers appear from August to October, followed by irregularly twisted, glaucous, brown seed pods which are 3 to 6 cm long and 3 to 6 mm wide.
Its occurs naturally in Western Australia, South Australia and Victoria and is listed as endangered under the in New South Wales.[1]
Taxonomy[]
The species was formally described in 1863 by Victorian Government Botanist Ferdinand von Mueller in the third volume of his Fragmenta Phytographiae Australiae, based on plant material collected near .[2]
Two subspecies are recognised:
Distribution[]
The species is relatively uncommon and is found scattered at several sites in isolated clumps: Buronga, Wentworth and Pooncarie districts in far south-western New South Wales, Victoria, South Australia and and in Western Australia. Arumpo Station in particular is home to a stunted sample, which is threatened by overgrazing by kangaroos.
Habitat[]
This species usually grows on deep, loose, sandy soil. It inhabits undisturbed mallee areas, often on ridges and dunes, and more rarely on rock outcrops.[5]
See also[]
Associated species:
- Eucalyptus dumosa
- Eucalyptus socialis
- Eucalyptus gracilis
- Callitris verrucosa
- Codonocarpus cotinifolius
- Triodia scariosa
References[]
- ^ Kodela P.G. & G.J. Harden. "Acacia acanthoclada". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 21 March 2011.
- ^ a b "Acacia acanthoclada". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 21 March 2011.
- ^ "Acacia acanthoclada F.Muell. subsp. acanthoclada". FloraBase. Western Australian Government Department of Parks and Wildlife.
- ^ "Acacia acanthoclada subsp. glaucescens Maslin". FloraBase. Western Australian Government Department of Parks and Wildlife.
- ^ "Harrow Wattle - profile". threatened species. Department of Environment and Conservation (NSW). Retrieved 21 March 2011.
External links[]
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Wikimedia Commons has media related to Acacia acanthoclada. |
- "Acacia acanthoclada". FloraBase. Western Australian Government Department of Parks and Wildlife.
- Australian National Botanic Gardens: Photo of Acacia acanthoclada
- Acacia
- Flora of New South Wales
- Flora of South Australia
- Flora of Victoria (Australia)
- Acacias of Western Australia
- Fabales of Australia
- Taxa named by Ferdinand von Mueller
- Plants described in 1863