171
            
            
              
                
                  Part VI
                
              
            
            
              
                
                  DISTRIBUTION MAPS
                
              
            
            
              
                List of Distribution Maps
              
            
            
              Alfalfa........................................................................................................................................................................173
            
            
              Annual sow-thistle .....................................................................................................................................................175
            
            
              Ball mustard...............................................................................................................................................................177
            
            
              Barley ........................................................................................................................................................................179
            
            
              Barnyard grass ...........................................................................................................................................................181
            
            
              Broad-leaved plantain................................................................................................................................................183
            
            
              Bull thistle .................................................................................................................................................................185
            
            
              Canada thistle ............................................................................................................................................................187
            
            
              Canola (Argentine) ....................................................................................................................................................189
            
            
              Chickweed .................................................................................................................................................................191
            
            
              Cleavers .....................................................................................................................................................................193
            
            
              Corn spurry................................................................................................................................................................195
            
            
              Curled dock ...............................................................................................................................................................197
            
            
              Dandelion ..................................................................................................................................................................199
            
            
              Downy brome ............................................................................................................................................................201
            
            
              Field bindweed ..........................................................................................................................................................203
            
            
              Flixweed ....................................................................................................................................................................205
            
            
              Foxtail barley.............................................................................................................................................................207
            
            
              Goat's-beard...............................................................................................................................................................209
            
            
              Green foxtail ..............................................................................................................................................................211
            
            
              Japanese brome..........................................................................................................................................................213
            
            
              Kochia .......................................................................................................................................................................215
            
            
              Lamb's-quarters .........................................................................................................................................................217
            
            
              Narrow-leaved hawk's-beard .....................................................................................................................................219
            
            
              Pale smartweed ..........................................................................................................................................................221
            
            
              Pasture sage ...............................................................................................................................................................223
            
            
              Perennial sow-thistle..................................................................................................................................................225
            
            
              Persian darnel ............................................................................................................................................................227
            
            
              Prickly lettuce ............................................................................................................................................................229
            
            
              Prostrate knotweed ....................................................................................................................................................231
            
            
              Quack grass ...............................................................................................................................................................233
            
            
              Redroot pigweed........................................................................................................................................................235
            
            
              Round-leaved mallow................................................................................................................................................237
            
            
              Russian thistle............................................................................................................................................................239
            
            
              Shepherd's-purse........................................................................................................................................................241
            
            
              Showy milkweed .......................................................................................................................................................243
            
            
              Smooth brome ...........................................................................................................................................................245
            
            
              Spiny annual sow-thistle............................................................................................................................................247
            
            
              Stinkweed ..................................................................................................................................................................249
            
            
              Stork's-bill .................................................................................................................................................................251
            
            
              Sunflower species ......................................................................................................................................................253
            
            
              Tartary buckwheat .....................................................................................................................................................255
            
            
              Wheat.........................................................................................................................................................................257
            
            
              White clover ..............................................................................................................................................................259
            
            
              White sweet-clover ....................................................................................................................................................261
            
            
              Wild buckwheat .........................................................................................................................................................263
            
            
              Wild mustard .............................................................................................................................................................265
            
            
              Wild oats....................................................................................................................................................................267
            
            
              Wild tomato ...............................................................................................................................................................269
            
            
              Yellow sweet-clover ..................................................................................................................................................271