Plants of South Eastern New South Wales
Acacia decurrens
Common name
Early black wattle, Black wattle, Green wattle, Sydney green wattle
Family
Fabaceae
Where found
Dry forest, woodland, heath, roadsides and disturbed sites, and stream banks. Coast, ranges, and ACT. Tablelands and the Western Slopes, north and west of Braidwood.
Treated as naturalised in the ACT.
Notes
Tree or shrub to 15 m tall. Fleshy seed stalks/arils. Bark smooth to fissured. Branchlets angled, with winged ridges, sparsely hairy to hairless. Leaves alternating up the stems, compound, 5-15 cm long. Rachis 2–12 cm long, hairless or sparsely appressed-hairy, 1 gland on the leaf stalk at the base of, or to about 7 mm below, the lowest pair of pinnae; jugary glands present, interjugary glands absent. 6-30 pinnae, each 2.5-9 cm long, each with 30-90 leaflets each mostly 0.5-1.5 cm long, 0.3-1 mm wide, hairless or rarely hairy with appressed hairs on the margins of the leaflets. Leaf stalks continue down the stems. Flower heads yellow, globular, 20-32 flowered (easiest seen in late buds), 4-7 mm in diameter, in branched and/or elongated clusters. Flowers Winter to Spring.
Hybridises with Acacia dealbata (both subspecies), and Acacia baileyana.
Family was Mimosaceae.
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Acacia~decurrens (accessed 29 April 2021)
World Wide Wattle line drawings, photos, and description: http://www.worldwidewattle.com/imagegallery/image.php?p=0&l=d&id=16975&o=1
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