| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Ulmaceae | Ulmus ×intermedia | Hybrid Elm | Recognizable from its intermediacy between its parents and occurrence in proximity to both. This hybrid apparently occurs in many midwestern States (cited for IA, IL, KS, MN, NE, SD, TX) (Elowsky, Jordon-Thaden, & Kaul 2013); the increasingly common naturalization of U. pumila in our area, and its proximity to populations of U. rubra would seem to make it inevitable that this hybrid occurs in our area. | ||
| Ulmaceae | Ulmus alata | Winged Elm, Wahoo | Rock outcrops, dry and mesic forests and woodlands, bottomlands, old fields, disturbed areas. | N. VA west to MO, south to c. peninsular FL and c. TX. |  |
| Ulmaceae | Ulmus americana var. americana | American Elm, White Elm | Swamps, bottomland forests, moist slopes, especially on relatively or strongly nutrient-rich substrates. | NS, NB, and QC west to se. SK, south to n. FL, c. TX, and n. and c. Mexico. |  |
| Ulmaceae | Ulmus americana var. floridana | Florida Elm | Shell middens, other calcareous forests. | Se. NC (north at least to Carteret County) south to c. peninsular FL, west to Panhandle FL and s. AL (H. Horne, pers. comm., 2013). |  |
| Ulmaceae | Ulmus crassifolia | Cedar Elm, Olmo | Bottomland forests, hardwood flatwoods, prairies with tight soils; rarely river bluffs and ravines. | W. TN, s. MO, and OK south to MS, LA, TX, and Mexico (COA, NLE, TAM); disjunct in e. Panhandle FL. |  |
| Ulmaceae | Ulmus glabra | Wych Elm, Scotch Elm | Suburban woodlands. | Native of Europe. Naturalized in ne. United States; reported from VA and DC (Sherman-Broyles in FNA 1997), but may only be cultivated. |  |
| Ulmaceae | Ulmus minor | English Elm, English Cork Elm | Planted horticulturally, rarely spreading. | Native of Europe. |  |
| Ulmaceae | Ulmus parvifolia | Chinese Elm, Lacebark Elm | Disturbed secondary forests, roadsides, fencerows, old fields, other disturbed areas. | Native of China and Japan. The bark on mature trees exfoliates creating a patchwork of gray, brown, green, and orange blotches. |  |
| Ulmaceae | Ulmus pumila | Siberian Elm, Dwarf Elm | Roadsides, disturbed areas. | Native of Asia. |  |
| Ulmaceae | Ulmus rubra | Slippery Elm, Red Elm | Moist to fairly dry calcareous forests, rich bottomlands, rich cove forests in the low Mountains. | ME, QC, and ON west to MN and ND, south to Panhandle FL and c. TX. |  |
| Ulmaceae | Ulmus serotina | September Elm, Red Elm | Dry-mesic to mesic upland forests, bottomland and riparian forests, stream banks, bluffs, lake and pond margins, flatwoods; especially over limestone. | KY, s. IL, and e. OK south to e. TN, nw. GA, AL, and MS; allegedly disjunct in ne. Mexico (COA and NLE) (Villaseñor 2016). Rugel collected this species on the French Broad River in 1842, the location attributed to NC by Mohr (1901). |  |
| Ulmaceae | Ulmus thomasii | Cork Elm, Rock Elm | Mesic upland and riparian forests, shaded bluffs, especially over limestone. | QC to MN and NE, south to NJ, MD, WV, KY, TN, AR, and KS. |  |
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