Flora of North America species comparison

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Acacia longifolia

golden wattle, sidney golden wattle, sydney golden wattle
Habit Shrubs or trees, erect, to 10 m.
Twigs

dark reddish brown, not flexuous, ridged, glabrous.
Leaves

phyllodic;

phyllode flat, not falcate, narrowly elliptic, 50–150 × 10–25 mm, venation parallel, with 2–4 prominent veins, minor veins prominent, apex acute to obtuse, apiculate, surfaces glabrous;

gland 1, 0–7 mm distal to pulvinus;

pulvinus 2–5 mm.
Inflorescences

cylindrical spikes, densely flowered, 20–50 × 5–8 mm, solitary or in fascicles of 2 or 3 in leaf axils.
Peduncles

0–2 mm.
Flowers

4-merous, bright yellow;

calyx 0.6–0.9 mm;

corolla 1.5–2.1 mm;

filaments 2.6–3.6 mm;

ovary pubescent.
Legumes

elliptic in cross section, linear, 50–150 × 5–9 mm, somewhat constricted between seeds.
Seeds

aril light yellow, folded several times into thickened, lateral, skirtlike aril covering seed apex.

Acacia longifolia
Phenology Flowering winter, spring.
Habitat Sandy coastal areas.
Elevation 0–40 m. (0–100 ft.)
Distribution
from FNA
CA; Pacific Islands (Kei Islands, New Guinea); se Australia [Introduced in North America; introduced also in s South America]
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[BONAP county map]
Discussion

Acacia longifolia is known from Alameda, Contra Costa, Los Angeles, Marin, Monterey, Orange, Riverside, San Bernardino, San Diego, San Francisco, San Luis Obispo, Santa Barbara, Santa Cruz, Solano, and Ventura counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Caesalpinioideae (Mimosoid clade) > Acacia
Sibling taxa
A. auriculiformis, A. baileyana, A. cultriformis, A. cyclops, A. dealbata, A. decurrens, A. mearnsii, A. melanoxylon, A. paradoxa, A. pycnantha, A. redolens, A. retinodes, A. saligna, A. verticillata
Synonyms Mimosa longifolia
Name authority (Andrews) Willdenow: Sp. Pl. 4: 1052. (1806)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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