UTILITY OF BIRDS IN FIELD AND GARDEN. 281 



Noxious Seeds 



Bull thistle ( Carduus lanceolatus) . 



Beggar's ticks (Bidens frondosa) . 



Sneezeweecl (Helenium autum- 

 nale). 



Ragweed (Ambrosia artemisice- 

 folia). 



Giant ragweed (Ambrosia trifida) . 



Sow thistle (Sonchus oleraceus). 



Dandelion ( Taraxacum taraxa- 

 cum} . 



Wild lettuce (Lactuca spicata) . 



Black bindweed (Polygonum con- 

 volvulus) . 



Pennsylvania persicaria (Polygo- 

 num pennsylvanicimi) . 



Knotweed (Polygonum aviculare). 



Climbing false buckwheat (Polyg- 

 onum scandens). 



Bitter dock (Rumex obtusifolius) . 



Curled dock (Rumex crisjms). 



Sheep sorrel (Rumex acetosella). 



Crab grass (Panicum sanguinale) . 



Pigeon grass ( Chcetochloa glauca) . 



Green foxtail grass (Chcetochloa 

 viridis) . 



Broom-sedge (Andropogon virgin- 

 icus") . 



eaten by Birds. 



Sheathed rush-grass (Sporobulus 



vagince-florus). 

 Poverty grass (Aristida sp.). 

 Yard grass (Eleusine indica). ' 

 Bermuda grass (Capriola dacty- 



lon) . 



Paspal um ( Paspalum sp.). 

 Sedge (Cyperus}. 

 Sassafras (Sassafras sassafras). 

 Blackberry (Rubus villosus) . 

 Pokeberry (Phytolacca decandra). 

 Partridge pea (Cassia chamce- 



crista) . 



Sweet clover (Melilotus alba) . 

 Tick -trefoil (Meibomia nudijlora) . 

 Snowdrops (Kneiffia fruiticosa). 

 Chickweed (Alsine media) . 

 Amaranth (Amaranthus relro- 



flexus) . 

 Trumpet creeper (Tecoma radi- 



cans) . 



Yellow sorrel ( Oxalis strictd) . 

 Rib-grass (Plantago lanceolata) . 

 Spurge (Euphorbia maculatd) . 

 Lamb's quarters (Chenopodium 



album) . 



Purslane (Portulaca oleracea). 

 Jewel weed (Impatiens) . 



