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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Caesalpinioideae
Tribus: Acacieae
Genus: Acacia
Species: Acacia myrtifolia

Acacia myrtifolia (Sm.) Willd., 1806

Acacia acutifolia Maiden & Blakely
Acacia marginata R.Br.
Acacia marginata var. angustata Meisn.
Acacia marginata var. brevifolia Regel
Acacia myrtifolia var. angustifolia (Benth.) W.Fitzg.
Acacia myrtifolia var. major Meisn.
Acacia pawlikowskyana Ohlend.
Acacia trigona A.DC.
Cuparilla myrtifolia (Sm.) Raf.
Mimosa myrtifolia Sm.
Phyllodoce myrtifolia (Sm.) Link
Racosperma myrtifolium (Sm.) Pedley

Native distribution areas:
Acacia myrtifolia

Continental: Australasia
Regional: Australia
New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia
Introduced into:

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Willdenow, C.L. 1806. Species Plantarum. Editio quarta. Tomus 4. Pars 2. Pp. 634–1157. Impensis G. C. Nauk, Berolini [Berlin]. BHL Biblioteca Digital Reference page. : 4(2):1054.


Govaerts, R. et al. 2020. Acacia myrtifolia in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Aug 09. Reference page.
International Plant Names Index. 2019. Acacia myrtifolia. Published online. Accessed: Aug 09 2019. 2019. Acacia myrtifolia. Missouri Botanical Garden. Published online. Accessed: 09 Aug 2019.
Catalogue of Life: 2021 Annual Checklist
Acacia myrtifolia – Taxon details on World Wide Wattle.
USDA, ARS, Germplasm Resources Information Network. Acacia myrtifolia in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Myrtle Wattle, Red Stem Wattle, Red-stemmed Wattle, South Australian Silver Wattle

Acacia myrtifolia, known colloquially as myrtle wattle, red stem wattle[1] or red-stemmed wattle, is a species of Acacia native to coastal areas of southern and eastern Australia.


It is a small, bushy and glabrous shrub that typically grows to 0.3–3 m (0.98–9.84 ft) in height and 2–3 m (6.6–9.8 ft) across. It has smooth grey coloured bark. The distinctive red branches are angled upward and have prominent ridges. The green slightly curved phyllodes have an elliptic to narrowly elliptic or oblanceolate shape. Each phyllode is 2–9 cm (1-3½ in) in length and 0.5–3 cm wide. Its flowers are creamy white or pale yellow and appear in winter and spring. The inflorescence is glabrous with globose heads with a diameter of 6 to 13 mm (0.24 to 0.51 in).[2] These are followed by 4–7 cm (1.5–3 in) long curved seed pods.[3] The pale pods have prominent margins and are thinly woody to firm and brittle when dry.[2] Shiny brown seeds are arranged longitudinally in the pod. Each seed is narrowly oblong with a length of 3.5 to 4.5 mm (0.14 to 0.18 in).[4]

The species was first formally described by the botanist Carl Ludwig von Willdenow in 1806 in the work Species Plantarum. Several synonyms for the species are known including; Racosperma myrtifolium, Acacia amoena, Acacia trigona, Mimosa marginata and Acacia acutifolia.[5]

It was one of the earliest plants described in the colony, having been illustrated by James Sowerby. Its specific epithet 'myrtle-leaved' is derived from the Latin myrtus 'myrtle', and folium 'leaf'.[6]

A. myrtifolia is part of the 'A. myrtifolia group' of Acacias along with eight other closely related species all found in Western Australia; Acacia celastrifolia, Acacia clydonophora, Acacia disticha, Acacia durabilis, Acacia heterochroa, Acacia nervosa, Acacia obovata and Acacia pygmaea.[4]

The shrub is found across the south coast of Western Australia and extends inland. It is found in the South West, Wheatbelt, Great Southern and Goldfields-Esperance regions. Form Albany in the south to Kondinin in the north and from Augusta in the west to Cape Arid in the east. It grows well in a range of habitats in gravelly or sandy soils.[7]

It is also found in coastal areas of South Australia east of the Eyre Peninsula extending coastal areas of Victoria and New South Wales and north into Queensland as far as Gladstone. It is also found in coastal areas of Tasmania.[5]

Habitats where A. myrtifolia is found is mostly open forest, mixed woodlands, scrub or heath, usually in coastal or near-coastal locations. The distribution pattern of the shrub closely follows the combined distributions of Acacia subcaerulea and Acacia suaveolens.[4]

A. myrtifolia is one of the earliest native Australian plants to be cultivated in Europe. The species has also been cultivated in Australia but it is not widely used in gardens as many other Acacia species have more colourful flowers. It prefers well drained soils, full sun and will tolerate moderate frosts.[1] If it is lightly pruned after flowering it will produce a busy growth habit.[6]

If grown from seed, pre-treatment by soaking in boiling water or by scarification is required.[1] Propagation from cuttings can also work.[6]

The fast growing shrub is suitable for low maintenance gardens, roadside verges and large median strips as a wind-break, natural barrier or erosion control.[8]
Wikispecies has information related to Acacia myrtifolia.
Wikimedia Commons has media related to Acacia myrtifolia.
Wikisource has original works on the topic: Acacia myrtifolia

"Acacia myrtifolia Myrtle Wattle, Red-stem Wattle". Wattles - Genus Acacia. Australian National Herbarium. Retrieved 2 September 2018.
Harden GJ (1990). "Acacia myrtifolia (Sm.) Willd". Plantnet - New South Wales Flora Online. Royal Botanic Gardens, Sydney. Retrieved 2008-06-11.
Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1985). Encyclopaedia of Australian Plants Suitable for Cultivation: Vol. 2. Port Melbourne, Victoria: Lothian Press. p. 88. ISBN 978-0-85091-143-5.
"Acacia myrtifolia". World Wide Wattle. Western Australian Herbarium. Retrieved 2 September 2018.
"Acacia myrtifolia (Sm.) Willd". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 2 September 2018.
"Acacia myrtifolia". Australian Native Plants Society. Retrieved 2 September 2018.
"Acacia myrtifolia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia myrtifolia Myrtle Wattle". Plant Selector. Retrieved 2 September 2018.

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