| Dare [Mainland] [OBL] [OBM] [OBU] | 434 species | Coastal Plain | Tidewater |
|
| Carteret | 392 species | Coastal Plain | Tidewater |
|
| New Hanover | 365 species | Coastal Plain | |
|
| Brunswick [Mainland] [BHI] | 350 species | Coastal Plain | |
|
| Wake | 342 species | Piedmont | |
|
| Hyde [Mainland] [OB] | 339 species | Coastal Plain | Tidewater |
|
| Mecklenburg | 319 species | Piedmont | |
|
| Onslow | 315 species | Coastal Plain | |
|
| Chatham | 311 species | Piedmont | |
|
| Guilford | 311 species | Piedmont | |
|
| Durham | 307 species | Piedmont | |
|
| Forsyth | 297 species | Piedmont | |
|
| Wayne | 297 species | Coastal Plain | |
|
| Currituck [Mainland] [OB] | 296 species | Coastal Plain | Tidewater |
|
| Buncombe | 288 species | Mountain | |
|
| Craven | 288 species | Coastal Plain | Tidewater |
|
| Henderson | 287 species | Mountain | |
|
| Orange | 270 species | Piedmont | |
|
| Washington | 266 species | Coastal Plain | Tidewater |
|
| Pitt | 265 species | Coastal Plain | |
|
| Moore [Coastal Plain] [Piedmont] | 257 species | | Sandhills |
|
| Catawba | 254 species | Piedmont | |
|
| Beaufort | 253 species | Coastal Plain | |
|
| Pender | 253 species | Coastal Plain | |
|
| Transylvania | 250 species | Mountain | |
|
| Wilkes [Mountain] [Piedmont] | 249 species | | |
|
| Haywood | 242 species | Mountain | |
|
| Halifax | 240 species | Piedmont | |
|
| Cumberland | 240 species | Coastal Plain | Sandhills |
|
| Pamlico | 238 species | Coastal Plain | Tidewater |
|
| Rockingham | 235 species | Piedmont | |
|
| Watauga | 232 species | Mountain | |
|
| Wilson | 226 species | Coastal Plain | |
|
| Gates | 218 species | Coastal Plain | |
|
| Caldwell | 217 species | Piedmont | |
|
| Tyrrell | 217 species | Coastal Plain | Tidewater |
|
| Gaston | 212 species | Piedmont | |
|
| Granville | 212 species | Piedmont | |
|
| Cabarrus | 210 species | Piedmont | |
|
| Jackson | 208 species | Mountain | |
|
| Burke [Mountain] [Piedmont] | 203 species | | |
|
| Anson | 200 species | Piedmont | |
|
| Randolph | 199 species | Piedmont | |
|
| Alexander | 199 species | Piedmont | |
|
| Avery | 194 species | Mountain | |
|
| Iredell | 193 species | Piedmont | |
|
| Swain | 193 species | Mountain | |
|
| Macon | 191 species | Mountain | |
|
| Camden | 191 species | Coastal Plain | |
|
| Northampton | 190 species | Coastal Plain | |
|
| Nash | 190 species | Piedmont | |
|
| Johnston | 186 species | Coastal Plain | |
|
| Pasquotank | 184 species | Coastal Plain | Tidewater |
|
| Bladen | 183 species | Coastal Plain | |
|
| Alamance | 183 species | Piedmont | |
|
| Harnett [Coastal Plain] [Piedmont] | 181 species | | |
|
| Madison | 180 species | Mountain | |
|
| Mitchell | 179 species | Mountain | |
|
| Union | 178 species | Piedmont | |
|
| Alleghany | 178 species | Mountain | |
|
| Ashe | 178 species | Mountain | |
|
| Stokes | 177 species | Piedmont | |
|
| Edgecombe | 174 species | Coastal Plain | |
|
| Warren | 174 species | Piedmont | |
|
| Rowan | 174 species | Piedmont | |
|
| Richmond [Coastal Plain] [Piedmont] | 170 species | Coastal Plain | Sandhills |
|
| Yancey | 166 species | Mountain | |
|
| Yadkin | 163 species | Piedmont | |
|
| Stanly | 160 species | Piedmont | |
|
| Davidson | 160 species | Piedmont | |
|
| Vance | 159 species | Piedmont | |
|
| McDowell [Mountain] [Piedmont] | 159 species | | |
|
| Columbus | 159 species | Coastal Plain | |
|
| Surry | 159 species | Piedmont | |
|
| Martin | 157 species | Coastal Plain | |
|
| Franklin | 156 species | Piedmont | |
|
| Polk [Mountain] [Piedmont] | 156 species | | |
|
| Scotland | 155 species | Coastal Plain | Sandhills |
|
| Rutherford [Mountain] [Piedmont] | 155 species | | |
|
| Graham | 154 species | Mountain | |
|
| Cleveland | 154 species | Piedmont | |
|
| Davie | 151 species | Piedmont | |
|
| Lee | 147 species | Piedmont | |
|
| Perquimans | 145 species | Coastal Plain | Tidewater |
|
| Montgomery | 144 species | Piedmont | |
|
| Person | 143 species | Piedmont | |
|
| Lincoln | 141 species | Piedmont | |
|
| Hoke | 140 species | Coastal Plain | Sandhills |
|
| Jones | 137 species | Coastal Plain | |
|
| Caswell | 136 species | Piedmont | |
|
| Cherokee | 134 species | Mountain | |
|
| Sampson | 133 species | Coastal Plain | |
|
| Bertie | 132 species | Coastal Plain | |
|
| Clay | 127 species | Mountain | |
|
| Robeson | 120 species | Coastal Plain | |
|
| Lenoir | 117 species | Coastal Plain | |
|
| Chowan | 116 species | Coastal Plain | |
|
| Greene | 108 species | Coastal Plain | |
|
| Hertford | 107 species | Coastal Plain | |
|
| Duplin | 103 species | Coastal Plain | |
|
