| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Ulmus | americana | 3197 |
| 2 | Ulmus | crassifolia | 1371 |
| 3 | Ulmus | alata | 637 |
| 4 | Ulmus | rubra | 524 |
| 5 | Ulmus | thomasii | 441 |
| 6 | Ulmus | pumila | 398 |
| 7 | Ulmus | parvifolia | 344 |
| 8 | Ulmus | minor | 129 |
| 9 | Ulmus | glabra | 120 |
| 10 | Ulmus | procera | 32 |
| 11 | Ulmus | laevis | 23 |
| 12 | Ulmus | serotina | 13 |
| 13 | Ulmus | mexicana | 9 |
| 14 | Ulmus | ismaelis | 4 |
| 15 | Ulmus | hollandica | 4 |
| 16 | Ulmus | carpinifolia | 4 |
| 17 | Ulmus | wallichiana | 1 |
| 18 | Ulmus | x | 1 |
| 19 | Ulmus | laciniata | 1 |
| 20 | Ulmus | davidiana | 1 |
| 21 | Ulmus | uyematsui | 1 |
| 22 | Ulmus | xvegeta | 1 |