| Species | Morpholgy | Preview | Code |
|---|---|---|---|
| Alnus cordata BETULACEAE | 58-2-6 | ||
| Alnus glutinosa BETULACEAE | 58-2-3a | ||
| Alnus jorullensis BETULACEAE | 4-porate, 5-porate, triporate | 58-2-5 | |
| Alnus oblongifolia BETULACEAE | 58-2-2 | ||
| Alnus rugosa BETULACEAE | zonocolpate | 58-2-1 | |
| Alnus tenuifolia BETULACEAE | 58-2-4 |