300 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 3 



Prickly lettuce, strong-scented lettuce . .Lac/ucw virosa. 



Purslane, garden purslane, pursley, 



• pusley Portulaca oleracea. 



Rabbit's-foot clover, stone clover TrifoUum arvense. 



*Ragweed, bitterweed, hogweed, Roman 



wormwood, richweed Ambrosia arteviiskefolki. 



*Ribgrass, black plantain, buck horn, 



deer tongue Plantago lanceolata. 



Rough avens Geum virginianum. 



Round-headed bush clover Lespedeza capitata. 



Round-leafed mallow, cheeses, mal- 

 lard Malva rotund if olia. 



Russian pigweed Axyris amar ant aides. 



*Sedge Carex sp. 



^Sensitive pea ChcBmocrista nictitans. 



*Sheathed rush grass Sporobolus vaginwflorus. 



Shepherd's purse, mother's heart, 



pickpurse, tooth wort Bursa bursa-pastoris. 



*Sida 8ida spinosa. 



*Skunk cabbage. .■ Spathyema foetida. 



'Skunk tail grass Hordeum jubatum. 



*Slender finger grass Syntherisma filiformis. 



*Slender paspalum Paspalum, setaceum. 



*Slender spike grass Uniola laxa. 



*Smartweed Polygonum hydropiper. 



*Sorrel: field, horse, red or sheep sor- 

 rel; sour weed Rumex acetosella. 



♦Spreading panicum Panicum proliferum. 



Spurry Spergola arvensis. 



Steeplebush Spircea tomentosa. 



Sticktight, beggar's lice Lappula virginiana. 



Stinkweed, penny-cress, French weed . . Thlaspi arvense. 



St. John's wort Hyperium pei-foratum. 



*Sunflower Helianthus annuus. 



Sweet grass Hierochloe borealis. 



*Switch grass, tall smooth panicum Panicum virgatum. 



Tearthumb Polygonum sagittatum. 



*Texas croton Croton texensis. 



*Three-seeded mercury, copper-leaf Acalypha glacilens. 



*Tick-trefoil Meibomia grmidiflora. 



*Tick-trefoil Meibomia nudiflora. 



*Tref oil Lotus sp. 



*Tussock sedge Carex stricta. 



*"Vetch Ticia sp. 



Water hoarhound Lycopus americaiius. 



Water smartweed Polygonum acre. 



White vervain, nettle-leaved vervain. ..Verbena stricta. 



Wild carrot, bird's nest, lace weed. 



Queen Anne's lace Daucus carota. 



Wild oats Avena fatua. 



Wild rice Zizania aquatica. 



