''Acacia lasiocalyx'', commonly known as silver wattle or shaggy wattle, is a tree or 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''.

Taxonomy

The species is closely related to '' Acacia conniana'' which has nonpruinose branchlets, shorter phyllodes and smaller pods enclosing smaller seeds. Other relatives are '' A. anastema'' and '' A. longiphyllodinea''. The

Noongar The Noongar (, also spelt Noongah, Nyungar , Nyoongar, Nyoongah, Nyungah, Nyugah, and Yunga ) are Aboriginal Australian peoples who live in the south-west corner of Western Australia, from Geraldton on the west coast to Esperance on the so ...

peoples know the tree as wilyurwur.

Description

The open often weeping tree or shrub typically grows to a height of , although some specimens may reach 25 m. It blooms from July to October producing yellow flowers. The leaf-like

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 and gently curving, each terminating in a hooked point. The

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 are simple, sometimes with a few rudimentary racemes interspersed with axes that are in length with paired peduncles paired that are long. They are pruinose with spikes and with a diameter of densely packed with a golden colour. The seed pods are linear and raised over seeds with a straight to slightly curved shaped and are up to long and wide. The seeds are longitudinal with an elliptic to oblong shape.

Distribution

It is native to a large area in the Wheatbelt, Goldfields-Esperance and Great Southern 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 ...

, and is found as far north as Eneabba an south as

Bremer Bay Bremer may refer to: People *Bremer (surname) *Bremer Ehrler (born 1914), American politician * Bremer (born 1997), Brazilian footballer Places ;Australia *Bremer Bay, Western Australia *Bremer Marine Park *Bremer Island * Bremer River (disambigua ...

and east as

Kalgoorlie Kalgoorlie is a city in the Goldfields–Esperance region of Western Australia, located east-northeast of Perth at the end of the Great Eastern Highway. It is sometimes referred to as Kalgoorlie–Boulder, as the surrounding urban area includ ...

. It is typically found growing as a thicket amongst granite outcrops.

Ecology

The tree is fibrous and copes well in

arid A region is arid when it severely lacks available water, to the extent of hindering or preventing the growth and development of plant and animal life. Regions with arid climates tend to lack vegetation and are called xeric or desertic. Most ar ...

conditions. It germinates prolifically after fire forming dense thickets of trees which are about in height. These thickets thin out over the following decades, and trees my attain a height of 25 metres.

References

{{Taxonbar, from=Q9566053 lasiocalyx Acacias of Western Australia Plants described in 1904 Taxa named by Cecil Rollo Payton Andrews

Taxonomy

Description

Distribution

Ecology

See also

References