Acacia heterochroa | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Fabales |
Family: | Fabaceae |
Clade: | Mimosoideae |
Genus: | Acacia |
Species: | A. heterochroa |
Binomial name | |
Acacia heterochroa | |
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Occurrence data from AVH |
Acacia heterochroa is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
The glabrous spreading shrub typically grows to a height of 0.3 to 2.0 metres (1 to 7 ft). [1] It has terete and ribbed branchlets that are dusted in a white powder. The new shoot tend to be a reddish colour with stipules that are easily detached. The grey-green phyllodes have an elliptic to ovate or sometimes almost circular shape with a length of 1 to 3.5 cm (0.39 to 1.38 in) and a width of 1 to 2.5 cm (0.39 to 0.98 in) with a prominent midrib and marginal nerves. [2] It produces yellow flowers from April to December. [1] The simple inflorescences have large spherical flower-heads containing 5 to 12 loosely packed bright lemon yellow flowers. The linear to curved and erect seed pods that form after flowering have a length of up to 6.5 cm (2.6 in) and a width of 3 to 4 mm (0.12 to 0.16 in). The purplish-red pods are thick and woody and dry to a black colour. The glossy brown seeds within the pods have an oblong shape and are 3.5 to 4 mm (0.14 to 0.16 in) in length. [2]
The species was first formally described by the botanist Bruce Maslin in 1995 as part of the work Acacia Miscellany. Acacia myrtifolia (Leguminosae: Mimosoideae: section Phyllodineae) and its allies in Western Australia as published in the journal Nuytsia . It was reclassified as Racosperma heterochroa in 2003 by Leslie Pedley then transferred back to the genus Acacia in 2006. [3] There are two recognised subspecies:
It belongs to the Acacia myrtifolia group. [2]
It is native to an area along the south coast in the Goldfields-Esperance and Great Southern regions of Western Australia where it is found on hilltops and ridges growing in gravelly lateritic soils. [1] The shrub is mostly found between Holt Rock and Ravensthorpe in open woodland or mallee communities. [2]
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