Jepson eFlora
Key to families | Table of families and genera

Key to Acacia

View taxon page for Acacia

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Leaves 2-pinnate

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

2' 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

Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.