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Count of Species by County

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Shelby 138 Grundy 203 Butler 237 Decatur 276
Lyon 142 Keokuk 203 Lucas 237 Carroll 278
Clarke 153 Clinton 207 Wayne 237 Marshall 278
Adams 154 Delaware 207 Hancock 238 Allamakee 280
Montgomery 157 Benton 209 Webster 239 Cherokee 280
Mills 158 Poweshiek 210 Bremer 240 Pottawattamie 280
Adair 163 Wapello 211 Dubuque 240 Sac 282
Osceola 164 Franklin 212 Pocahontas 241 Des Moines 284
Monroe 165 Jones 215 Tama 246 Boone 287
Ringgold 168 Mitchell 216 Wright 246 Warren 288
Humboldt 169 Calhoun 218 Hamilton 248 Winneshiek 291
Union 169 Floyd 219 Palo Alto 250 Clay 294
Cass 173 Plymouth 221 Louisa 256 Van Buren 295
Davis 176 Page 222 Lee 258 Fremont 298
Audubon 177 Howard 225 Hardin 259 Kossuth 299
Washington 182 Henry 226 Iowa 260 Marion 307
Jackson 186 Dallas 227 Muscatine 261 Appanoose 311
Sioux 186 Clayton 231 Black Hawk 262 Linn 311
Cedar 190 Jefferson 231 Guthrie 265 Cerro Gordo 318
Buchanan 192 O'Brien 232 Greene 266 Dickinson 318
Fayette 193 Mahaska 233 Ida 267 Story 319
Chickasaw 194 Jasper 234 Worth 268 Woodbury 322
Crawford 197 Buena Vista 235 Monona 269 Johnson 332
Taylor 199 Emmet 236 Harrison 270 Polk 353
Madison 201 Winnebago 236 Scott 273