GENERA AND SPECIES 



Urticace^ 

 Urtica dioica 



POLYGONACE^ . . . 



Polygonum Pennsylvanicum 

 Polygonum lapathifoliiim 

 Polygonum persicaria 

 Polygonum amculare 

 Polygonum scandens 



Polygonum cilinode . 

 Rumex crispus . 

 Rumex obtusefolms . 



Chenopodiace^ . 

 Chenopodium album 



Phytolaccace^ . 

 Phytolacca decandra 



Caryophyllace^ . 



Lychnis alba . 

 Silene lalifolia . 

 Saponaria officinalis 



Nymph^ace^ . 



Nymphaa odorata . 

 Nuphar advena . 

 Nelumbo lutea . . 



Ranunculace^ . 



Clematis Virginiana 

 Cimcifuga racemosa 

 Ranunculus acris 

 Thalictrum polygamum 

 Thalictrum purpurascens 



Crucifer^ 



Brassica nigra . 

 Brassica campestris 



Nettle Family 

 Stinging Nettle 



Buckwheat Family 

 Pink Knotweed 

 Large White Knotweed . 

 Common Smartweed . 

 Knotgrass .... 

 Climbing False Buck- 

 wheat 



Fringed Black Bindweed . 

 Curled Dock .... 

 Broad-Leaved Dock . 



GoosEFOOT Family 

 Lamb's-Quarters . 



PoKEWEED Family 

 Pokeweed 



Pink Family 



White Campion . 

 Bladder Campion . 

 Boimcing-Bet . 



Water-Lily Family 

 White Water-Lily 

 Spatter-Dock . 

 American Lotus . 



PAGE 



33 



36 

 37 

 37 

 38 



38 

 40 

 40 

 42 



44 



46 



48 



SO 

 52 



55 

 58 

 60 



Crowfoot Family 



Clematis 62 



Cimcifuga 65 



Buttercup 66 



Tall Meadow-Rue . . 68 



Purple Meadow-Rue . . 70 



Mustard Family 

 Black Mustard 

 WUd Turnip . 



71 



74 



XVI 



