| Acacia hystrix | |
|---|---|
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. hystrix |
| Binomial name | |
| Acacia hystrix | |
 | |
| Occurrence data from AVH | |
Acacia hystrix is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
The dense shrub typically grows to a height of 0.3 to 1.0 metre (1.0 to 3.3 ft) and has a rounded or obconic habit. The glabrous branchlets with inconspicuous, caducous stipules. Like most species of Acacia it has phyllodes rather than true leaves. The erect phyllodes are often running almost continuously with branchlets. They and pungent, rigid and glabrous and have a pentagonal cross-section and have a length of 2 to 6 cm (0.79 to 2.36 in) and a diameter of 1 to 2 mm (0.039 to 0.079 in) with five prominent yellow or yellow-green vernicose nerves. The simple inflorescences are found in pairs in the axils with spherical flower-heads containing 10 to 13 bright light golden flowers. Following flowering firmly chartaceous to thinly coriaceous seed pods form that have an oblong to narrowly oblong shape. The glabrous and declinate pods have a length of up to 2.5 cm (0.98 in) and a width of 3 to 5 mm (0.12 to 0.20 in). The seeds inside are arranged longitudinally to obliquely. The glossy brown seeds have an oblong-elliptic to oblong-obovate shape with a length of 2.2 to 2.7 mm (0.087 to 0.106 in). [1]
The species was first formally described by the botanist Bruce Maslin in 1999 as part of the work Acacia miscellany 16. The taxonomy of fifty-five species of Acacia, primarily Western Australian, in section Phyllodineae as published in the journal Nuytsia . It was reclassified as Racosperma hystrix by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006. [2]
There are two recognised subspecies:
It is native to an area in the Wheatbelt and Goldfields-Esperance regions of Western Australia where it is found growing in sandy or loamy soils. [3] It is found from around Kulin in the west to around Lake Gilmore in the east. [1]
Acacia blaxellii, also known as Blaxell's wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae endemic to Western Australia.
Acacia heterochroa is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia leptospermoides is a shrub belonging to the genus Acacia and the subgenus Phyllodineae and is endemic to a large area of south western Australia.
Acacia mutabilis is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia nigripilosa is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to Western Australia.
Acacia oxyclada is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to western Australia.
Acacia pachypoda is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia phaeocalyx is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia plautella is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to a small area along the coast of western Australia.
Acacia robiniae, commonly known as Robin's wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia rossei, also known as Yellowdine wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia ryaniana is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to an area along the west coast of Australia.
Acacia scalena is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to a small area in western Australia.
Acacia simulans is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia spathulifolia commonly known as Gold carpet or the Gold carpet wattle is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to coastal parts of western Australia.
Acacia sphacelata is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia sphenophylla is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to a small area in western Australia.
Acacia splendens is a tree or shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to a small area of western Australia.
Acacia juncifolia, commonly known as rush-leaf wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to north eastern Australia.
Acacia simmonsiana, commonly known as Simmons wattle or desert manna wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae native to south eastern Australia.