''Acacia deltoidea'' is a shrub of the genus ''

Acacia ''Acacia'', commonly known as wattles or acacias, is a genus of about of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa, South America, and Austral ...

'' and the subgenus ''Plurinerves'' that is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to north western

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

Description

The straggling shrub typically grows to a height of and has glandular-hairy branchlets with persistent subulate upcurved

stipule In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole (botany), petiole). They are primarily found among dicots and rare among monocots. Stipules are considered part ...

s with a length of . Like most species of ''Acacia'' it has

phyllode Phyllodes are modified petiole (botany), petioles or leaf stems, which are leaf-like in appearance and function. In some plants, these become flattened and widened, while the leaf itself becomes reduced or vanishes altogether. Thus the phyllode co ...

s rather than true leaves. The subsessile, imbricate phyllodes are patent to ascending with a cuneate to elliptic to triangular or broadly obdeltate shape. The leathery and

glabrous Glabrousness () is the technical term for a lack of hair, down, setae, trichomes, or other such covering. A glabrous surface may be a natural characteristic of all or part of a plant or animal, or be due to loss because of a physical condition, ...

phyllodes are in length and wide and have three to four distant, slightly raised main nerves. It blooms from March to August and produces yellow flowers.

Taxonomy

There are two recognised

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

: *''Acacia deltoidea'' subsp. ''ampla'' *''Acacia deltoidea'' subsp. ''deltoidea''

Distribution

It is native to an area in the West

Kimberley Kimberly or Kimberley may refer to: Places and historical events Australia Queensland * Kimberley, Queensland, a coastal locality in the Shire of Douglas South Australia * County of Kimberley, a cadastral unit in South Australia Ta ...

region of

Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...

from along the

Bonaparte Archipelago The Bonaparte Archipelago is a group of islands off the coast of Western Australia in the Kimberley region, within the Shire of Wyndham-East Kimberley. The closest inhabited place is Kalumburu located about to the east of the island group. Th ...

and Napier Bay in the west to around the Phillips Range,

Kimberley Downs Station Kimberley Downs Station, commonly referred to as Kimberley Downs, is a pastoral lease that operates as a cattle station in Western Australia. Location Kimberley Downs is situated about east of Derby and northwest of Junjuwa community. It is ...

and

Beverley Springs Station Beverley is a market town and civil parishes in England, civil parish in the East Riding of Yorkshire, England. It is located north-west of Kingston upon Hull, Hull city centre. At the 2021 United Kingdom census, 2021 census the built-up area ...

in the east. It is usually found growing in sandy soils over and around

sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...

and

quartzite Quartzite is a hard, non- foliated metamorphic rock that was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tecton ...

References

{{Taxonbar, from=Q15289517 deltoidea Acacias of Western Australia Taxa named by Allan Cunningham (botanist) Plants described in 1832

Description

Taxonomy

Distribution

See also

References