| Costin's wattle | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Clade: | Mimosoideae |
| Genus: | Acacia |
| Species: | A. costiniana |
| Binomial name | |
| Acacia costiniana | |
 | |
| Occurrence data from AVH | |
Acacia costiniana, commonly known as Costin's wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to eastern Australia.
The shrub typically grows to a height of 0.6 to 2 m (2 ft 0 in to 6 ft 7 in) and has an erect or weeping or spreading habit. [1] The puberulous branchlets have stipules that are 1 to 3 mm (0.039 to 0.118 in) in length. Like most species of Acacia it has phyllodes rather than true leaves. The evergreen phyllodes appear crowded and are mostly ascending to erect with an asymmetrically ovate to elliptic shape. They are 1 to 2 cm (0.39 to 0.79 in) in length and 5 to 11 mm (0.20 to 0.43 in) wide with fine, sparse, straight hairs lying flat against the surface. The phyllodes have a slightly excentric midrib and obscure lateral nerves. [2] It blooms between August and September [1] producing simple or racemose inflorescences that have obloid to subglobular flower-heads that are around 6 mm (0.24 in) in length and contain 14 to 26 golden or rich lemon yellow coloured flowers. After flowering it forms thinly coriaceous seed pods that are velvety with ferruginous to silvery-ferruginous hairs. The pods have a narrowly oblong shape and are uo to 5 cm (2.0 in) in length and 10 to 12 mm (0.39 to 0.47 in) wide. The shiny black seeds inside have an ovate to oblong-elliptic shape and are 4 to 6 mm (0.16 to 0.24 in) in length with a clavate aril. [2]
The species was first formally described by the botanist Mary Tindale in 1980 as part of the work Notes on Australian taxa of Acacia as published in the journal Telopea . It was reclassified as Racosperma costinianum in 2003 by Leslie Pedley then transferred back to the genus Acacia in 2006. [3]
It is native to south eastern parts of New South Wales between Captains Flat though to Bombala where it is found on rocky slopes as a part of dry sclerophyll forest and heath communities. [1] It is mostly situated at an altitude of around 1,200 m (3,900 ft) on granitic slopes or in gullies or occasionally in heath on the margins of swamps as a part of Eucalyptus forest or woodland. [2]
Acacia obliquinervia, known colloquially as mountain hickory or mountain hickory wattle, is a species of Acacia that is endemic to south eastern Australia.
Acacia ptychophylla is a shrub belonging to the genus Acacia and the subgenus Juliflorae the is endemic to arid areas of north western Australia.
Acacia repanda is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to a small area in western Australia.
Acacia wickhamii is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to parts of northern Australia.
Acacia crassistipula is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to western Australia.
Acacia erinacea, also known as prickly wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is native to Western Australia.
Acacia idiomorpha is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to a small area of western Australia.
Acacia georgensis, commonly known as Bega wattle or Dr George Mountain wattle, is a species of Acacia native to southeastern Australia. It was one of eleven species selected for the Save a Species Walk campaign in April 2016 when scientists walked 300 km to raise money for collection of seeds to be prepared and stored at the Australian PlantBank at the Australian Botanic Garden Mount Annan.
Acacia barringtonensis, commonly known as Barrington wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae endemic to New South Wales.
Acacia conferta, commonly known as crowded-leaf wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to eastern Australia.
Acacia hamiltoniana, commonly known as Hamilton's wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is native to parts of eastern Australia.
Acacia hockingsii, also known as Hocking's wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is native to parts of north eastern Australia.
Acacia polifolia is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is native to parts of eastern Australia.
Acacia saliciformis is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae native to eastern Australia.
Acacia torringtonensis is a shrub belonging to the genus Acacia and the subgenus Phyllodineae native to eastern Australia.
Acacia kettlewelliae, commonly known as buffalo wattle, is a tree or shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south eastern Australia.
Acacia kybeanensis, commonly known as kybean wattle or kybeyan wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south eastern Australia.
Acacia lunata, commonly known as lunate-leaved acacia, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to eastern Australia.
Acacia mabellae, commonly known as Mabels's wattle or black wattle, is a shrub or tree of the genus Acacia and the subgenus Phyllodineae that is endemic to eastern Australia.
Acacia pycnostachya, also known as Bolivia wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae that is native to eastern Australia.