''Acacia rossei'', also known as Yellowdine wattle,
is a shrub of 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 ''Phyllodineae'' that is
endemic to south 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 spindly, open and viscid shrub typically grows to a height of .
[ It is sparingly branched with glabrous branchlets that become roughened by stem-projections the once held the ]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 in place and setaceous stipules with a length of in length.. Like most species of ''Acacia'' it has phyllodes rather than true leaves. The tick and evergreen phyllodes are crowded on the branchlets and are patent to erect. The phyllodes have a linear shape and are straight to shallowly curved with a length of and a width of with a resinous midrib and abaxial nerves.[ It blooms from August to January and produces yellow flowers.][ The inflorescence are composed of spherical flowerheads that are densely pack with 65 to 75 golden coloured flowers. The crustaceous seed pods that form after flowering have a narrowly oblong shape with a length of and a width of and are roughened by brown excrescences. The oblong to widely elliptic seeds inside have a length of .][
]
Taxonomy
The species was first formally described by the botanist Ferdinand von Mueller
Baron Sir Ferdinand Jacob Heinrich von Mueller, (german: Müller; 30 June 1825 – 10 October 1896) was a German-Australian physician, geographer, and most notably, a botanist. He was appointed government botanist for the then colony of Vict ...
in 1893 as part of the work ''Descriptions of new Australian plants, with occasional other annotations (continued)'' as published in ''The Victorian Naturalist''. It was reclassified as ''Racosperma rossei'' by Leslie Pedley then transferred back to genus ''Acacia'' in 2006.Acacia glutinosissima
''Acacia glutinosissima'' is a shrub belonging to the genus ''Acacia'' and the subgenus ''Phyllodineae'' that is endemism, endemic to western Australia.
Description
The spindly. open, sparingly branched and viscid shrub typically grows to a heig ...
'' and ''Acacia handonis
''Acacia handonis'', commonly known as Hando's wattle or Percy Grant wattle, is a shrub belonging to the genus ''Acacia'' and the subgenus ''Phyllodineae'' that is native to parts of north eastern Australia. In 2008 it was listed as vulnerable ac ...
'' found in Queensland has the same type of excrescences on the seed pod.[
]
Distribution
It is native to an area in the Wheatbelt and Goldfields-Esperance regions of Western Australia where it is commonly situated on sandplains growing in sandy lateritic soils.
Cultivation
The shrub is sold commercially and is known for the showy flower display. It prefers an open position in full sun in a light well drained soil and is moderately frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) ...
tolerant and drought resistant.[
]
See also
* List of ''Acacia'' species
References
{{Taxonbar, from=Q15288886
rossei
Acacias of Western Australia
Taxa named by Ferdinand von Mueller
Plants described in 1893