Gaudium deanei, commonly known as Deane's tea-tree,[2] is a species of rare, slender shrub that is endemic to the northern suburbs of Sydney.

The flowers are borne singly on short side shoots and are white, occasionally with some pink, about 8–10 mm (0.31–0.39 in) in diameter.

Flowering occurs from October to November and the fruit is about 3.5 mm (0.14 in) in diameter, mostly glabrous and falling from the plant from December.

[6] This tea-tree grows in sandy soils in forest, woodland and shrubland on the lower slopes of valleys and near streams between Cowan Creek and the Lane Cove River.

Other threats include invasive weeds, clearing and habitat damage caused by urban run-off and flooding.