''Acacia isoneura'' is a shrub belonging to the genus ''
Acacia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus na ...
'' and the subgenus ''Juliflorae'' that is
endemic
Endemism is the state of a species being found 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 found elsew ...
to western
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
.
Description
The shrub typically grows to a height of
[ and had a rounded, obconic habit. The ]glabrous
Glabrousness (from the Latin ''glaber'' meaning "bald", "hairless", "shaved", "smooth") 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 ...
branchlets are sericeous between the ribs and towards the apices. The green to grey-green coloured glabrous phyllode
Phyllodes are modified 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 comes to serve the ...
s are soft and flexible. The pungent phyllodes have a length of and a diameter of and has eight broad nerves that are separated by narrow furrows.[ The simple ]inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
s occur singly or in pairs in the axil
A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, st ...
s and have an obloid to stoutly cylindrical shape with a length of packed with golden flowers. The chartaceous seed pod
This page provides a glossary of plant morphology. Botanists and other biologists who study plant morphology use a number of different terms to classify and identify plant organs and parts that can be observed using no more than a handheld magnify ...
s that form after flowering are linear or resemble a string of beads have a length of and a width of . The glossy mottled grey brown to light brown seeds within the pods are arranged longitudinally and have and length of .[
]
Taxonomy
There are two recognised subspecies:
* ''Acacia isoneura'' subsp. ''isoneura''
* ''Acacia isoneura'' subsp. ''nimia''
Distribution
It is native to an area in the Mid West
The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four Census Bureau Region, census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of ...
and Wheatbelt regions of Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...
where it grows in flats, sandplains, low rises and ridges in stony sandy soils.
See also
* List of ''Acacia'' species
References
{{Taxonbar, from=Q15287399
isoneura
Acacias of Western Australia
Plants described in 1999
Taxa named by Bruce Maslin