Acacia pycnostachya

Location & distribution maps

Phylogeny & links to associated information

Wikipedia links:       Angiosperms > Eudicots > Rosids  > Fagales > Fabaceae > Acacia pycnostachya

Other links:     

Common name:                Bolivia Wattle  

Conservation status:  Vulnerable

Etymology:   

• Borrowed from Latin acacia, from Ancient Greek ἀκακία (akakía) "a thorny Egyptian tree", from ἀκή (akḗ) "point, thorn

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Flowers:                  

• It blooms between August and October producing golden flowers

• The subsessile flower-spikes are 2.5 to 7.5 cm) in length that are densely packed with dark yellow flowers

Fruit:                         

• The seed pods that form after flowering have linear shape and are constricted between the seeds with a length of 8 to 12 cm) and a width of 2 to 4.5 mm 

• The pods are wrinkled longitudinally with pale coloured margins

• The black seeds inside are arranged longitudinally inside the pods and have an oblong-elliptic shape with a length of 4 to 6 mm

Leaves:         

• The coarse and flattened branchlets are 3.5 to 11 mm in width and have a purplish, brown-orange or tan colour and covered with a fine white powder

• Like most species of Acacia it has phyllodes rather than true leaves

• The glabrous, rigid and coriaceous phyllodes have a narrowly lanceolate-elliptic to ovate-elliptic shape with a length of 6 to 11.5 cm and a width of 10 to 27 mm and have three nerves that are more prominent than the rest

Stem & branches: 

Roots:         

Habit:        

• The shrub or tree typically grows to a maximum height of 7 m and is usually covered with a fine white powder

Habitat:   

• It is found on granite slopes amongst boulders growing in sandy soil 

• It grows as a part of dry heath and Eucalyptus and Callitris woodland communities

Distribution:                  

• It is endemic to the north eastern corner of New South Wales in the Bolivia Range in the northern tablelands on the border with Queensland 

Additional notes:     

Sources of information:

• https://en.wikipedia.org/wiki/Acacia_pycnostachya (2024)