Acacia hystrix is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
| 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 | |
Description
editThe 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]
Taxonomy
editThe 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:
- Acacia hystrix subsp. continua
- Acacia hystrix subsp. hystrix
Distribution
editIt 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]
See also
editReferences
edit- ^ a b "Acacia hystrix". World Wide Wattle. CSIRO publishing. Retrieved 14 June 2020.
- ^ "Acacia hystrix Maslin". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 14 June 2020.
- ^ "Acacia hystrix". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.