Acacia caerulescens, commonly known as limestone blue wattle, Buchan blue or Buchan blue wattle[3] is a species of flowering plant in the family Fabaceae and is endemic to Victoria, Australia. It is a tree or tall shrub with mostly egg-shaped to lance-shaped phyllodes with the narrower end towards the base, spherical heads of lemon yellow flowers in racemes or panicles, and papery pods covered with a whitish bloom.
Acacia caerulescens is a tree or large shrub that typically grows a height of 10–15m (33–49ft) and has a pyramidal habit with glabrous branchlets with a fine, white powdery coating. Its phyllodes are egg-shaped to lance-shaped with the narrower end towards the base or sometimes elliptic or narrowly elliptic shaped, 40–80mm (1.6–3.1in) long and 15–30mm (0.59–1.18in) wide. The flowers are borne in spherical heads in racemes or panicles on a rachis10–30mm (0.39–1.18in) long. The heads have mostly twenty to thirty lemon-yellow flowers. Flowering occurs from November to December and the pods are papery, glabrous, and stalked, 50–120mm (2.0–4.7in) long and 14–22mm (0.55–0.87in) wide with dull black, elliptic seeds 5–6mm (0.20–0.24in) long.[3][4][5]
1 2 3 Maslin, Bruce R. Kodela, Phillip G. (ed.). "Acacia caerulescens". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 30 May 2025.
1 2 Entwisle, Timothy J.; Maslin, Bruce R.; Cowan, Richard S.; Court, Arthur B. "Acacia caerulescens". Royal Botanic Gardens Victoria. Retrieved 30 May 2025.
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