Acacia Uncinata
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''Acacia uncinata'', commonly known as gold-dust wattle or round-leaved wattle, 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 ''Phyllodineae'' that is native to parts of eastern
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 has an open to spindly habit and typically grows to a height of . The dull grey-green
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 flat or slightly twisted with an elliptic to broadly elliptic shape that can sometimes be broadly obovate. The phyllodes have a length of and a width of . The shrub blooms between September and November producing up to 20 inflorescences on axillary racemes along an axis of around in length. The spherical flower heads contain 14 to 23 pale yellow flowers. After flowering firm leathery brown
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 form that are flat to curved with a length of and .


Taxonomy

The species was first formally described by the botanist
John Lindley John Lindley FRS (5 February 1799 – 1 November 1865) was an English botanist, gardener and orchidologist. Early years Born in Catton, near Norwich, England, John Lindley was one of four children of George and Mary Lindley. George Lindley w ...
in 1830 as part of the work ''
Edwards's Botanical Register ''The Botanical Register'', subsequently known as ''Edwards's Botanical Register'', was an illustrated horticultural magazine that ran from 1815 to 1847. It was started by the botanical illustrator Sydenham Edwards, who had previously illustrate ...
''. It was reclassified as ''Racosperma uncinatum'' in 1987 by
Leslie Pedley Leslie Pedley (19 May 1930 – 27 November 2018)IPNILeslie Pedley/ref> was an Australian botanist who specialised in the genus ''Acacia''. He is notable for bringing into use the generic name ''Racosperma'', creating a split in the genus, which r ...
then transferred back to the genus ''Acacia'' in 2006. The
specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...
is reference to the phyllode's curved point. ''A. uncinata'' strongly resembles ''
Acacia aureocrinita ''Acacia aureocrinita'' is a shrub belonging to the genus ''Acacia'' and the subgenus ''Phyllodineae'' that is native to parts of eastern Australia. Description The shrub or tree has a bushy habit and typically grows to a height of less than bu ...
''. Other synonyms include; ''Acacia oleifolia'', ''Acacia dysophylla'', ''Acacia undulifolia'' var. ''dysophylla'' and ''Acacia undulifolia''.


Distribution

It is found in the north eastern part of
Mount Kaputar National Park The Mount Kaputar National Park is a national park located in New South Wales, Australia, surrounding the proximities of Mount Kaputar, a volcano active between 17 and 21 million years ago. It is located east of Narrabri and northwest of ...
in
New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...
where it grows along watercourses and on hillsides ''
Eucalyptus ''Eucalyptus'' () is a genus of over seven hundred species of flowering trees, shrubs or mallees in the myrtle family, Myrtaceae. Along with several other genera in the tribe Eucalypteae, including '' Corymbia'', they are commonly known as euca ...
'' and ''
Callitris ''Callitris'' is a genus of coniferous trees in the Cupressaceae (cypress family). There are 16 recognized species in the genus, of which 13 are native to Australia and the other three (''C. neocaledonica, C. sulcata'' and ''C. p ...
'' woodland communities in rocky sandy-loam soils.


See also

* List of ''Acacia'' species


References

{{Taxonbar, from=Q15289324 uncinata Flora of New South Wales Plants described in 1830