UTILITY OF BIRDS IN FIELD AND GARDEN. 281 



Noxious Seeds 



Bull thistle ( Carduus lanceolatus) . 



Beggar's ticks (Bidens frondosa) . 



Sneezeweed (Helenium autum- 

 nale) . 



Kagweed (Ambrosia artemisice- 

 folia) . 



Giant ragweed (Ambrosia trifida) . 



Sow thistle (Sonchus oleraceus). 



Dandelion ( Taraxacum taraxa- 

 cum) . 



Wild lettuce (Lacluca spicata). 



Black bindweed (Polygonum con- 

 volvulus) . 



Pennsylvania persicaria (Polygo- 

 num pennsylvanicum) . 



Knotweed (Polygonum aviculare) . 



Climbing false buckwheat (Polyg- 

 onum scandens). 



Bitter dock (Rumex obtusifolius) . 



Curled dock (Rumex crispus). 



Sheep sorrel (Rumex acetosella). 



Crab grass (Panicum sanguinale) . 



Pigeon grass ( Chcetochloa glauca) . 



Green foxtail grass (Choztochloa 

 viridis) . 



Broom-sedge (Andropogon virgin- 

 icus) . 



eaten by Birds. 

 Sheathed rush-grass (Sporobulus 



vaginoz-florus) . 

 Poverty grass (Aristida sp.). 

 Yard grass (Eleusine indica). 

 Bermuda grass (Capriola dacty- 



lon) . 

 Paspalum (Paspalum sp.). 

 Sedge (Cyperus). 

 Sassafras (Sassafras sassafras). 

 Blackberry (Rubus villosus) . 

 Pokeberry (Phytolacca decandra). 

 Partridge pea (Cassia chamce- 



crisla) . 

 Sweet clover (Meliloius alba). 

 Tick-trefoil (Meibomia nudiflora) . 

 Snowdrops (Kneiffia fruiticosa). 

 Chickweed (Alsine media) . 

 Amaranth (Amaranthus reiro- 



flexus) . 

 Trumpet creeper (Tecoma radi- 



cans) . 

 Yellow sorrel (Oxalis stricta). 

 Rib-grass (Planlago lanceolata) . 

 Spurge (Euphorbia maculala) . 

 Lamb's quarters (Chenopodium 



alburn) . 

 Purslane (Portulaca oleracea). 

 Jewel weed (Impatiens). 



