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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 lacertensis

Acacia lacertensis Pedley

Austrobaileya 5(2): 316 (1999).

Acacia lacertensis is a tree belonging to the genus Acacia and the subgenus Juliflorae that is endemic to tropical parts of northern central Australia.


The slender tree with an open crown typically grows to a height of around 8 metres (26 ft). It blooms from June to July producing yellow flowers.[1] It has stout angular branchlets that are glabrous with a powdery white coating. The straight to sigmoid phyllodes are attenuate at the base with a length of 12.5 to 20 cm (4.9 to 7.9 in) in length and a width of 1 to 2 mm (0.039 to 0.079 in). The phyllodes have two to three prominent fine longitudinal nerves that are widely spaced. The flower-spikes are found occurring in pairs and are found on shoots located on the upper axils. The spikes are 4 to 5 cm (1.6 to 2.0 in) and loosely packed with golden yellow flowers. The straight seed pods that form after flowering are 8 to 9 cm (3.1 to 3.5 in) in length and around 3.5 mm (0.14 in) wide with convex valves over the seeds and prominent marginal nerves. The obloid-shaped seeds are arranged longitudinally within the pods and are around 4 mm (0.16 in) in length and 2 mm (0.079 in) wide.[1]

It is closely related to Acacia tropica which is found further to the east in the Gulf Country.[2]

The species is found in northern parts of the Northern Territory on the north western edges of the Arnhemland sandstone plateau.[2] It is found in parts of the East Alligator River and its tributaries including Cooper Creek in Kakadu National Park where it grows along creek lines in sandy soils.[1]
See also

List of Acacia species


"Acacia lacertensis". World Wide Wattle. Western Australian Herbarium. Retrieved 22 May 2019.
"Acacia lacertensis Pedley". Wattle - Acacias of Australia. Department of the Environment and Energy.

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