Elm species, hybrids, and cultivars evaluated for insect resistance in Lexington, KY, 2006-2009, with geographical origins and selected leaf characteristics.
| Species or parentage | Cultivar name | Abbr. | Native range | Leaf area (cm2) | Leaves per shoot | Pubesc. ratingz |
|---|---|---|---|---|---|---|
| U. americana | Valley Forge | VF | N. America [NA] | 28±4 | 20±8 | 0/3 |
| Princeton | PN | 31±5 | 16±6 | 0/3 | ||
| Jefferson | J | 29±8 | 13± 4 | 1/3 | ||
| New Harmony | NH | 28±5 | 19±5 | 0/3 | ||
| Lewis & Clark Prairie Expedition | PE | 43±10 | 11±1 | 0/1 | ||
| U. parvifolia | Emer II Allee | EA | Japan, China, Korea [A] | 2±0.2 | 142±47 | 0/0 |
| Athena Classic Lacebark | A | 2±0.4 | 177±25 | 0/1 | ||
| Everclear Lacebark | E | 2±0.5 | 179±72 | 0/1 | ||
| U. propinqua (JFS Bierberich) | Emerald Sunshine | ES | Japan [A] | 20±2 | 34±13 | 3/4 |
| U. wilsoniana | Prospector | PR | China [A] | 20±2 | 27±8 | 0/2 |
| U. pumila × japonica | Morton Plainsman Vanguard | MP | A×A | 11±2 | 40±13 | 0/0 |
| New Horizon | Nh | 16±3 | 53±14 | 0/2 | ||
| U. japonica × wilsoniana | Morton Red Tip Danada Charm | MR | A×A | 8±2 | 143±63 | 1/1 |
| Morton Accolade | M | 16±1 | 20±8 | 0/0 | ||
| U. pumila × japonica × wilsoniana | Morton Glossy Triumph | MG | A×A×A | 10±3 | 70±26 | 1/2 |
| U. carpinifolia × pumila × wilsoniana | Morton Stalwart Commendation | MS | A×A×A | 12±3 | 45±24 | 1/2 |
| U. glabra × carp. × pumila × wilson. | Patriot | PT | E×A | 10±2 | 75±37 | 1/3 |
| U. carp. × U. parvifolia | Frontier | F | E×A | 4±0.4 | 101±43 | 0/0 |
| U. glabra × carp. × pumila | Homestead | H | E×E×A | 4±0.5 | 113±25 | 0/0 |
| U. glabra × carpinifolia | Pioneer | PI | E×E | 11±1 | 48±5 | 0/1 |
↵zPubescence rating: 0 = glabrous; 1 = a few sparse trichomes; 2, 3, 4 = lightly, moderately, and densely pubescent, respectively. The two numbers represent adaxial/abaxial leaf surfaces.
Parental species (native ranges) not listed: U. carpinifolia (Europe, N. Africa [E]); U. glabra (Europe, W. Asia [E]); U. pumila (Siberia, China, Korea [A]); U. davidiana var. japonica (China, Japan, Korea [A]).