Acacia lacertensis | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Fabales |
Family: | Fabaceae |
Clade: | Mimosoideae |
Genus: | Acacia |
Species: | A. lacertensis |
Binomial name | |
Acacia lacertensis | |
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Occurrence data from AVH |
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]
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