Jepson eFlora
Key to families | Table of families and genera

Key to Acacia

View taxon page for Acacia

1. Leaves 2-pinnate

2. 1° leaflets 2–5 pairs ..... A. baileyana

2' 1° leaflets generally > 6 pairs (3–13)

3. Twigs winged; 2° leaflets >= 10 mm ..... [A. decurrens]

3' Twigs angled; 2° leaflets < 7 mm

4. Leaf main axis with raised glands at each 1° leaflet pair; fruit glabrous, silver-blue ..... A. dealbata

4' Leaf main axis with raised glands at most 1° leaflet pairs and generally between; fruit ± hairy, dark brown ..... [A. mearnsii]

1' Leaves simple

5. Leaf < 40 mm

6. Stipular spines present; heads 1 ..... [A. paradoxa]

6' Stipular spines 0; heads in racemes

7. Leaf > 4 mm wide, tip not spine-like ..... [A. podalyriifolia]

7' Leaf <= 1.5 mm wide, tip spine-like ..... [A. verticillata]

5' Leaf generally > 40 mm

8. Leaf with 1 prominent midvein

9. Petiole base 4–8 mm; raceme, occasionally panicle of 10–30 heads ..... [A. pycnantha]

9' Petiole base <= 4 mm; raceme of 2–9 heads

10. Leaf narrowly lanceolate; head 5–7 mm wide; gland above petiole base not obvious, < 1 mm wide ..... [A. retinodes]

10' Leaf linear to narrowly elliptic; head 8–12 mm wide; gland above petiole base obvious, 1–2 mm wide ..... A. saligna

8' Leaf with >= 2 ± prominent longitudinal veins

11. Flowers in spikes ..... A. longifolia

11' Flowers in heads, these 1 or in racemes or panicles

12. Leaves, stems resinous, vanilla-scented when crushed ..... A. redolens

12' Leaves, stems not resinous, not vanilla-scented when crushed

13. Shrub, branches dense, spreading from base; leaf narrowly oblong to obovate, generally 4–15 mm wide ..... A. cyclops

13' Tree, generally with 1 trunk; leaf (except juvenile) lanceolate to oblanceolate, generally 6–30 mm wide ..... A. melanoxylon

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Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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