Melaleuca acutifolia

Melaleuca acutifolia is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It has small, pointed, oval leaves and in summer, heads of white flowers. The species was originally described as a variety of Melaleuca lateriflora[2] but was raised to species status in 2010.

habit in Manea Park, Bunbury
M. acutifolia foliage and fruit

Melaleuca acutifolia
M. acutifolia in the ANBG.
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Melaleuca
Species:
M. acutifolia
Binomial name
Melaleuca acutifolia
Synonyms[1]
  • Melaleuca lateriflora var. acutifolia Benth.
  • Melaleuca lateriflora subsp. acutifolia (Benth.) Barlow ex Craven

Description

Melaleuca acutifolia is a shrub or small tree which grows to a height of about 6 m (20 ft) and has grey papery bark. The leaves are arranged alternately and are 7–25 mm (0.3–1 in) long, 2–7.5 mm (0.08–0.3 in) wide, oval to very narrow oval in shape, tapering to a point and often with a few fine hairs on the surface.

The flowers are white and in heads on the previous year's shoots, each head containing up to 15 flowers and up to 25 mm (1 in) in diameter. The stamens are in five bundles around the flower, each bundle with 10 to 22 stamens. Flowering occurs in summer and the fruit that follow are woody capsules 3–5 mm (0.1–0.2 in) long.[3]

Taxonomy and naming

Melaleuca lateriflora var. acutifolia was first described in 1867 by George Bentham in Flora Australiensis.[2][4] It was raised to species status as Melaleuca acutifolia in 2010 by Lyndley Craven and Brendan Lepschi.[1][5] The specific epithet (acutifolia) is from the Latin acutus meaning "pointed" and folium meaning "leaf".[3]

Distribution and habitat

This species occurs in the Kalbarri and Yalgoo districts south to the Waroona district in the Avon Wheatbelt, Coolgardie, Geraldton Sandplains, Jarrah Forest, Murchison, Swan Coastal Plain and Yalgoo biogeographic regions. It grows in woodland and dense heath in clay loam and sandy clay, sometimes on the edge of saltpans.[3][6]

Conservation status

This species is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.[6]

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References
  1. Craven, Lyndley; Lepschi, Brendan; Cowley, Kirsten. "Melaleuca (Myrtaceae) of Western Australia: five new species, three new combinations, one new name and a new state record". Nuytsia. 20: 27–36.
  2. "Melaleuca lateriflora var. acutifolia". APNI. Retrieved 7 April 2015.
  3. Brophy, Joseph J.; Craven, Lyndley A.; Doran, John C. (2013). Melaleucas : their botany, essential oils and uses. Canberra: Australian Centre for International Agricultural Research. p. 68. ISBN 9781922137517.
  4. Bentham, George. "Flora Australiensis". p. 136. Retrieved 16 March 2015.
  5. "Melaleuca acutifolia". APNI. Retrieved 7 April 2015.
  6. "Melaleuca acutifolia". FloraBase. Western Australian Government Department of Parks and Wildlife.
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