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| 1 | Leaves simple, rarely compound (3-foliolate) | Rhigozum brevispinosum |
| 1 | Leaves usually compound, rarely simple | 2 |
| 2 | Leaves usually 3-foliolate | Rhigozum obovatum |
| 2 | Leaves usually imparipinnate, rarely 3-foliolate | Rhigozum zambesiacum |
| Home | > | List of families | > | Bignoniaceae | > | Rhigozum | > | Key to species |