Micromyrtus hexamera

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Micromyrtus hexamera

In the Australian National Botanic Gardens
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Myrtaceae
Genus:	Micromyrtus
Species:	M. hexamera
Binomial name
*Micromyrtus hexamera* (Maiden & Betche) Maiden and Betche^[1]
Synonyms^[1]
Thryptomene hexamera Maiden & Betche

Micromyrtus hexamera is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to eastern Australia. It is a shrub with many drooping branches, egg-shaped leaves with the narrower end towards the base, and white to pink flowers arranged singly in leaf axils with 12 stamens in each flower.

Description

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Micromyrtus hexamera is a slender shrub that typically grows up to 2 m (6 ft 7 in) high and has many drooping branches. Its leaves are egg-shaped with the narrower end towards the base, 1.1–1.9 mm (0.043–0.075 in) long, 0.8–1 mm (0.031–0.039 in) wide and sessile or on a petiole up to 0.2 mm (0.0079 in) long. The leaves are glabrous and have a few prominent oil glands. The flowers are 5–6 mm (0.20–0.24 in) wide and arranged singly in leaf axils on a peduncle 0.7–1.2 mm (0.028–0.047 in) long, with 2 bracteoles about 1 mm (0.039 in) long at the base. There are 6 more or less round sepals 0.6–0.7 mm (0.024–0.028 in) long, and 6 more or less round white to pink petals 1.7–2.1 mm (0.067–0.083 in) long and wide. There are 12 stamens, the filaments about 1.0 mm (0.039 in) long. Flowering has been recorded in most months, with a peak in August and September, and the fruit contains a single seed.^[2]^[3]^[4]

Taxonomy

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This species was first formally described in 1901 by Joseph Maiden Ernst Betche who gave it the name Thryptomene hexamera in the Proceedings of the Linnean Society of New South Wales.^[5] In 1916 they transferred the species to the genus Micromyrtus as M. hexamera in A Census of New South Wales Plants.^[6]

Distribution and habitat

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This species of micromyrtus grows in heath or shrubland near Cunnamulla and Charleville in Queensland and near Bourke, mainly between the Warrego and Darling Rivers, in northern New South Wales.^[2]^[3]

References

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^ ^a ^b "Micromyrtus hexamera". Australian Plant Census. Retrieved 30 November 2023.
^ ^a ^b Bean, Anthony R. (1997). "A revision of Micromyrtus Benth. (Myrtaceae) in Queensland". Austrobaileya. 4 (4): 473–475. Retrieved 30 November 2023.
^ ^a ^b "Micromyrtus hexamera". Royal Botanic Gardens Sydney. Retrieved 30 November 2023.
^ Green, John W. (1980). "Thryptomene and Micromyrtus (Myrtaceae) in arid and semi-arid Australia". Nuytsia. 3 (2): 195–196. Retrieved 4 December 2023.
^ "Thryptomene hexamera". APNI. Retrieved 30 November 2023.
^ "Micromyrtus hexamera". APNI. Retrieved 30 November 2023.

Taxon identifiers
Micromyrtus hexamera	Wikidata: Q15372523 Wikispecies: Micromyrtus hexamera APNI: 72927 CoL: 42ZP4 GBIF: 3173572 iNaturalist: 981320 IPNI: 598398-1 NSWFlora: Micromyrtus~hexamera Open Tree of Life: 3933740 Plant List: kew-127458 POWO: urn:lsid:ipni.org:names:598398-1 Tropicos: 100225175 WFO: wfo-0000243518
Thryptomene hexamera	Wikidata: Q39281147 APNI: 93259 CoL: 56NFH GBIF: 3173573 IPNI: 602461-1 POWO: urn:lsid:ipni.org:names:602461-1 Tropicos: 100266769 WFO: wfo-0000323518

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