Acacia dorsenna

Acacia dorsenna is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to Western Australia.

The dense domed shrub typically grows to a height of 1.0 to 1.6 m and 3.0 m wide. The smooth dull green phyllodes have an elliptic to obovate shape. The phyllodes are around 10 to 15 mm in length and have a width of 5 to 9 mm with obscure midrib and lateral nerves. It blooms from August to September producing yellow flowers. The inflorescences are found in groups of seven to ten. The spherical flower-heads contain 15 to 21 bright golden yellow flowers. The narrowly oblong brown seed pods that form after flowering have a length of around 6 cm and a width of 11 mm. The oblong-elliptic shaped seeds have a length of up to 4 mm.

It is a member of the Acacia prainii and resembles Acacia camptoclada and some forms of Acacia merrallii.

It is native to a small area in the Goldfields-Esperance region of Western Australia in a small area in the Dundas where it is found on low rocky hills growing in rocky sandy-loam-clay soils. Only two populations of the shrub are known both of which are located about 25 km to the north of Norseman in mallee or shrubland communities.