Acacia parramattensis Tindale, Fabaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 9 (Go to the risk assessment)

Common name(s): [more details]

English: Parramatta green wattle, Parramatta wattle, Sydney green wattle

Habit:  tree

Description:  "Trees (shrubby when young) up to 15 m tall; branches glabrous or with scattered hairs.  Leaves bipinnately compound, with 6-14 pairs of pinnae, leaflets 30-44 pairs in all pinnae, linear-oblong, 2-5 mm long, 0.5-0.8 mm wide, with a nectary on the main rachis between or near each pair of pinnae.  Flowers ca. 1.8 mm long, in heads ca. 5 mm in diameter (excl. stamens), these arranged in terminal leafy panicles not exceeding the subtending leaves; corolla pale yellow; stamens ca. 3 mm long.  Pods oblong, laterally flattened, not constructed or constructed in only 1-2 places, 6-11 cm long, 0.4-0.75 cm wide, sutures yellowish, subglabrous.  Seeds ellipsoid, laterally flattened, 4-8 mm llong, 3-6 mm wide."  (Wagner et al., 1999; p. 643).

Habitat/ecology:  "Grows in open forest or woodland, chiefly on shale, also on other formations"  (Flora of Australia online).

Propagation:  Seed

Native range:  New South Wales, Australia (Wagner et al., 1999; p. 643).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia (Pacific offshore islands) Norfolk Islands	Norfolk Island	introduced invasive	Orchard, Anthony E., ed. (1994) (p. 9) "Introduced to the Island by foresters and apparently regenerating where felled". Vouchers cited: R.O. Gardner 5882 (AK), R.O. Gardner 6227 (AK, K)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 643)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 643) Voucher cited: Rock 2759, BISH

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	New South Wales	native	Australian Biological Resources Study (2013)
Australia Australia (continental)	Australia (continental)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Australian Capitol Territory
New Zealand New Zealand	New Zealand (country)	introduced invasive	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 709) "Waste places, riverbeds, dry hillsides".

Control:  If you know of control methods for Acacia parramattensis, please let us know.