| Acacia roycei | |
|---|---|
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. roycei |
| Binomial name | |
| Acacia roycei | |
 | |
| Occurrence data from AVH | |
| Synonyms | |
Racosperma roycei | |
Acacia roycei is a shrub or tree of the genus Acacia and the subgenus Plurinerves endemic to an area of western Australia.
The dense shrub or tree typically grows to a height of 1 to 6 metres (3 to 20 ft) [1] with usually hairy branchlets that have pale yellow new shoots. Like most species of Acacia it has phyllodes rather than true leaves. The rigid, grey–green and cylindrical phyllodes are straight to slightly curved with a length of 4 to 8 cm (1.6 to 3.1 in) and a diameter of 1 to 1.5 mm (0.039 to 0.059 in) with 12 to 16 close, slightly raised nerves. [2] It blooms from August to October and produces yellow flowers. [1] The simple inflorescences occur singly or in pairs on the axils and have spherical flower–heads with a diameter of 5 to 6 mm (0.20 to 0.24 in) and contain 55 to 75 densely packed golden coloured flowers. The glabrous, chartaceous, yellow brown to plae brown seed pods that form after flowering are raised over seeds and slightly constricted between each seed and are strongly curved with a length of up to 5 cm (2.0 in) and are 4 to 5 mm (0.16 to 0.20 in) wide. [2]
The species was first formally described by the botanist Bruce Maslin in 1977 as a part of the work Studies in the genus Acacia (Mimosaceae) Miscellany as published in the journal Nuytsia . It was reclassified in 2003 by Leslie Pedley as Racosperma roycei then transferred back to genus Acacia in 2006. [3]
It is native to an area in the Mid West, Gascoyne and Wheatbelt regions of Western Australia where it is commonly situated on sandplains growing in sandy or sandy–loam soils. [1] The range of the plant extends from Ajana in the south to around Towrana Station in the north to the south of Gascoyne Junction where it is commonly a part of closed Acacia scrubland communities. [2]
Acacia brachypoda, known colloquially as western wheatbelt wattle or Chinocup wattle, is an endangered species of Acacia restricted to a small locality in western Australia's wheatbelt.
Acacia desertorum is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia latior is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia sibina is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae the is endemic to parts of western Australia.
Acacia thomsonii, commonly known as Thomson's wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae that native to parts of northern Australia.
Acacia chartacea is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae endemic to an area along the west coast of 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 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 aulacophylla is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to western Australia.
Acacia hadrophylla is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia.
Acacia inceana is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia.
Acacia kenneallyi is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to north western Australia.
Acacia nivea is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia.
Acacia octonervia is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area along the south western coast of Australia.
Acacia pharangites, commonly known as Wongan gully wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to the Wongan Hills of south western Australia and is listed as endangered according to the Environment Protection and Biodiversity Conservation Act 1999.
Acacia recurvata, commonly known as the recurved wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area of western Australia.
Acacia sciophanes, commonly known as the Ghost wattle or Wundowlin wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area in south western Australia. In 1995 it was declared as rare in 1995 according to the Western Australian Wildlife Conservation Act 1950 and is listed as endangered under the Environment Protection and Biodiversity Conservation Act 1999.
Acacia undosa is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of south western Australia.
Acacia vittata, commonly known as Lake Logue wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area in western Australia.
Acacia cretacea, also known as chalky wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to South Australia.