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The following is a list of spot-characters recorded for this species.
Number of spot characters found: 7| Spot number | Spot-character | Comment |
| 109 | Prickles or spines on trunk or stems | |
| 201 | Yellow sap | |
| 715 | Leaves pinnatifid | |
| 721 | Leaves bearing spines or prickles | |
| 740 | Leaves alternate | |
| 744 | Leaves amplexicaul | |
| 1001 | Fruit prickly or spiny |
| Home | > | List of families | > | Papaveraceae | > | Argemone | > | mexicana |