1A. Flowers 4-merous	8. A. longifolia subsp. sophorae
1B. Flowers 5-merous	2
2A. Phyllodes prominently reticulate; minor nerves densely anastomosing and not parallel to major nerves	9. A. mangium
2B. Phyllodes not prominently reticulate; minor nerves sparsely anastomosing and parallel to major nerves	3
3A. Phyllodes with the major nerves neither running together nor confluent with one another at the base and not confluent with lower margin	6. A. auriculiformis
3B. Phyllodes with some of or all the major nerves either running together or confluent with one another at the base and confluent with lower margin	7. A. concurrens