41 



4 hieracifolius L. Fire Weed. 



5 obovatus W. 



6 vulgaris L. Groundsel. Hartford, Dr. J.W. Robbins. 



358 Serpicula L. 



1 occideatalis Ph. Ditch Moss. Longmeadow. 



359 Setaria P. de Beauv. 



1 viridis P. de B. Panicum viride L. 



2 glauca P. de B. P. giaucum. Fox Tail Grass. 



360 Sicyos L. 



§ 1 angulata L. Single Seed Cucumber. 



361 Sida L. 



1 abutilon L. Indian Mallows. 



362 Silene L. 



1 antirrhina L. Sleepy Catch Fly. 



2 pennsylvanica Mx. Pink Catch Fly. 



363 Sinapis L. 



§ 1 nigra Smith. Mustard. 



364 Sison L. Myrrhis Morrison. Chaerophyllum Pers. 



1 canadense L. Hone Wort. Mock Sanicle. 



365 Sisymbrium L. 



1 arnphibium L. Water Radish. 



2 nasturtium L. English Water Cress. 



366 Sisyrinchium L. 



1 anceps Cavan. Blue Eyed Grass. 



367 Sium L. 



1 latifolium L. Water Parsnip. 



2 lineare Mx. 



368 Similax L. 



1 peduQCularis W. Jacob's Ladder. 



2 rotundifolia L. Green Briar. 



369 Smyruium L. 



1 aureum L. Sison aureus Spreng. Thaspium aureum JVutt. 

 False Alexanders, Meadow Parsnip. 



370 Solanum L. 



1 dulcamara L. Bitter Sweet. 



