Acacia trinalis is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to an area of south western Australia.

Acacia trinalis

Priority One — Poorly Known Taxa (DEC)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. trinalis
Binomial name
Acacia trinalis
Occurrence data from AVH

Description

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The dense, rounded and bushy shrub or tree typically grows to a height of 1.5 to 4 metres (5 to 13 ft)[1] with multiple stems and glabrous and resinous new growth. The angular and resin-ribbed branchlets have easily detached minute stipules with a triangular shape. Like most species of Acacia it has phyllodes rather than true leaves. The evergreen, glabrous, thinly leathery and patent to ascending phyllodes have a linear shape and are straight to shallowly incurved with a length of 4.5 to 9 cm (1.8 to 3.5 in) and a width of 2 to 3 mm (0.079 to 0.118 in) and have three raised, resinous nerves with central nerve being the most prominent.[2] It blooms in September and produces yellow flowers.[1][3] The simple inflorescences occur in pairs in the axils and have spherical flower-heads with a diameter of 4 to 5 mm (0.16 to 0.20 in) containing 22 to 28 golden coloured flowers.[2]

Distribution

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It is native to an area in the Wheatbelt region of Western Australia where it is commonly situated in swampy areas, around salt lakes and on flats growing in sandy or clay-loam soils.[1] The range of the species extends from around Marchagee in the north west down to the Mortlock River near Goomalling in the south east.[2]

See also

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References

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  1. ^ a b c "Acacia trinalis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  2. ^ a b c "Acacia trinalis". World Wide Wattle. Western Australian Herbarium. Retrieved 19 January 2021.
  3. ^ Anthony E. Orchard (1 January 2001). Flora of Australia: Mimosaceae, Acacia. v. 11A, 11B. Csiro Publishing. pp. 53–. ISBN 978-0-643-06719-6.