UTILITY OF BIRDS IN FIELD AND GARDEN. 281 



Noxious Seeds eaten by Birds. 



Bull thistle ( Carduus lanceolatus) . 



Beggar's ticks (Bidens frondosa) . 



Sneezeweed (Hclenium autum- 

 nale). 



Ragweed (Ambrosia artemisice- 

 folia) . 



Giant ragweed (Ambrosia trifida) . 



Sow thistle (Sonchus oleraceus). 



Dandelion ( Taraxacum taraxa- 

 cum). 



Wild lettuce (Lactnca spicata). 



Black bindweed (Polygomtm con- 

 volvulus). 



Pennsylvania persicaria (Polygo- 

 mim pennsylvanicum) . 



Knotweed (Polygonum aviculare). 



Climbing false buckwheat (Polyg- 

 onum scandens) . 



Bitter dock (Rumex obtusifolius} . 



Curled dock (Rumex crisjms). 



Sheep sorrel (Rtimex acetosella). 



Crab grass (Panicum sanguinale) . 



Pigeon grass ( Chcetochloa glauca) . 



Green foxtail grass (Chcetochloa 

 viridis) . 



Broom-sedge (Andropogon virgin- 



Sheathed rush-grass (Sporobulus 



vagince-florus) . 

 Poverty grass (Aristida sp.). 

 Yard grass (Eleufsine indiccC). 

 Bermuda grass (Capriola dacty- 



lori) . 



Paspalum (Paspalum sp.). 

 Sedge (Cy perns'). 

 Sassafras (Sassafras sassafras). 

 Blackberry (Rubus villosus). 

 Pokeberry (Phytolacca decandra). 

 Partridge pea (Cassia chamce- 



crista) . 



Sweet clover (Melilotus alba) . 

 Tick -trefoil (Meibomia nudiflord) . 

 Snowdrops (Kneiffia fruiticosd). 

 Chickweed (Alsine media). 

 Amaranth (Amaranthus relro- 



jlexits) . 

 Trumpet creeper (Tecoma radi- 



cans). 



Yellow sorrel (Oxalis slricla). 

 Rib-grass (Planlago lanceolata). 

 Spurge (Euphorbia maculala). 

 Lamb's quarters (Ghenopodium 



album) . 



Purslane (Portulaca oleracea). 

 Jewel weed (Impatiens) . 



