Acacia exudans Lindl.

Casterton Wattle

in T.L.Mitchell, Three Exped. Australia 2: 212 (1838) APNI

Taxonomic status:Accepted

Occurrence status:Endemic

Establishment means:Native

Threat status:Victoria: vulnerable (v)

Slightly aromatic, dense rounded shrub, 1–4 m high; branchlets not or only slightly flexuose, angled and often viscid with a thick band of dark resin between slighlty raised yellow bands when young, but soon terete, glabrous. Phyllodes narrowly oblong-elliptic to narrowly elliptic or oblanceolate, occasionally elliptic or lanceolate, (2.5–)3–6(–7) cm long, 5–20 mm wide, ± straight, scarcely resinous-punctate, glabrous, margins with appressed hairs when young; veins 2, lateral nerves few and obscure; gland 0–3(–4) mm above pulvinus. Peduncles 1–2(–3) per axil, 4–10 mm long, stout, densely tomentose, basal bract caducous or persistent; heads globose, 6–9 mm diam., 50–60-flowered, lemon yellow. Flowers 5-merous; sepals united. Pods narrowly oblong, 2–7 cm long, 5–8 mm wide, thinly coriaceous-crustaceous, glabrous; seeds longitudinal, obloid-orbicular, 3.8–4.3 mm long, shiny, dark brown or black, aril terminal. Flowers Sep.–Oct.

DunT, Glep, VVP. Confined to far south-west Victoria near Casterton, growing in heath or low eucalypt woodland, often along degraded road verges.

Acacia exudans is similar in many respects to A. rostriformis and A. verniciflua. Acacia rostriformis is distinguished from A. exudans by the branchlets having dense appressed hairs, distinct phyllode shape, and smaller flower heads. Acacia exundans is distinguished from A. verniciflua by its densely hairy peduncles, large (3–4 mm long) persistent basal peduncular bracts, and stipules that are usually persistent (caducous in A. verniciflua). 

Created by: Andre Messina, 2016-03-11
Updated by: Val Stajsic, 2018-08-02
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Fabales
family Fabaceae
genus Acacia
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Acacia exudans in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Acacia exudans in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Glenelg Plain present native
Victorian Volcanic Plain present native
Dundas Tablelands present native

State distribution

Distribution map
Western Australia