| Acacia phaeocalyx | |
|---|---|
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. phaeocalyx |
| Binomial name | |
| Acacia phaeocalyx | |
 | |
| Occurrence data from AVH | |
Acacia phaeocalyx is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
The spreading and pungent shrub typically grows to a height of 0.3 to 0.6 metres (1.0 to 2.0 ft). [1] It can have an intricate, sprawling or compact habit and has glabrous branchlets that are often covered in a fine white powdery coating and have spiny stipules that are 2 to 4 mm (0.079 to 0.157 in) in length and shallowly recurved. Like most species of Acacia it has phyllodes rather than true leaves. The pungent, coriaceous and green dimidiate phyllodes are widest below or near or below the middle and are 8 to 15 mm (0.31 to 0.59 in) in length and 6 to 11 mm (0.24 to 0.43 in) in width with a midrib near the abaxial margin. [2] It blooms from April to June and produces yellow flowers. [1] The simple inflorescences occur singly in the axils with spherical flower-heads that contain seven to eight loosely packed flowers. Following flowering coriaceous-crustaceous, red-brown seed pods form that are shallowly curved and longitudinally striated. The terete pods are usually up to around 7 cm (2.8 in) in length and have a diameter of about 4 mm (0.16 in). The dark brown seeds inside have an oblong shape with a length of 4 to 5 mm (0.16 to 0.20 in) with a conical terminal aril. [2]
The species was first formally described by the botanist Bruce Maslin in 1978 as part of the work Studies in the genus Acacia (Mimosaceae) - A revision of the Uninerves - Triangulares, in part (the tetramerous species) as published in the journal Nuytsia . It was reclassified as Racosperma phaeocalyx by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006. [3]
It is native to an area in the central Wheatbelt region of Western Australia where it is commonly situated on plains and hillsides growing in sandy soils usually over or around laterite. [1] The bulk of the population is found between Wongan Hills in the north west and Kellerberrin in the south east where it is usually a part of scrub and tall shrubland communities. [2]
Acacia arcuatilis is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to south western parts of Australia.
Acacia conniana is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to the southern coast of western Australia.
Acacia desertorum is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia effusifolia is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae. It is native to an area in the Mid West and the Wheatbelt regions of Western Australia.
Acacia incognita, also known as false sugar brother, is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae that is endemic to Western Australia.
Acacia rhodophloia, commonly known as minni ritchi or western red mulga, is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to a large area of arid central western Australia. The Indigenous group the Kurrama peoples know the plant as mantaru.
Acacia tetraneura is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia argutifolia, commonly known as the East Barrens wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae.
Acacia chrysocephala is a shrub belonging to the genus Acacia and the subgenus Phyllodineae.
Acacia hystrix is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia muriculata, commonly known as Koolanooka wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to a small area of south western Australia.
Acacia pachyphylla 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 quinquenervia is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south 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 sphenophylla is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to a small area in western Australia.
Acacia dissona is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of south western Australia.
Acacia donaldsonii is a shrub of the genus Acacia and the subgenus Plurinerves that is endemism in an area of south western Australia.
Acacia speckii is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to a small area in central western Australia.
Acacia tetanophylla is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of south western Australia.
