342 



Agrostis alba 

 Amorpha canescens 

 Andropogon furcatus 

 Asdepias incarnata 

 Asclepias syriaca 

 Asdepias tuber osa 

 Aspidimn thelypteris 

 Aster aziireus 

 Aster dumosus 

 Betida alba papyrifera 

 Betiila piimila 

 Calopogon pidchellus 

 Desm odium illinoense 

 Brigeron ramosiis 

 Bnpatoriuui piirpurcitui iiiacii- 



latimi 

 Euphorbia corollata 

 Habcnaria psycodes 

 Juncns balticus Httoralis 

 Koeleria cristata 

 Krigia auiplcxicaulis 

 Lathyrus palustris luyrtif alius 



Invading Species 

 Acer negiindo 

 Acer saccharinum 

 Aralia nudicaidis 

 Bchinocystis lobata 

 Geranium maculatum 

 Maiantheinuin canadense 

 Carya 07'ata 



Liatris spicata 

 Lobelia spicata 

 Lythruin alatum 

 Oxy polls rigidior 

 Paniciim virgatum 

 Parnassia caroliniana 

 Pedicularis lance olata 

 Pefalostem um candidtim 

 PotentUla frnticosa 

 Prenanthes raceinosa 

 Prnnus puiuila 

 PycnantJieiunin virginianmn 

 Rynchospora capillacea leviseta 

 Rudbeckia hirta 

 Sali.v glaucophylla 

 SaJi.v syrticola 

 Silene antirrhina 

 Solidago ohioensis 

 Solidago grauiinifolia 

 Sorghastruni nutans 

 Trodescantia reflexa 

 Zicia a urea 



Monarda fistulosa 

 Polvgonatiini conuuutatuui 

 Quefcus veliiima 

 Smilacina stellata 

 Snnlax hispida 

 Fit is rulpina 

 Juglans nigra 



the; prunus tpiickkt association 



While over go per cent, of the thickets of this region belong to the 

 Popu.lus-Salix-Corniis thicket association, there are, along the north 

 bank of the Dead Lake, a few thickets which belong to a different 

 association. Their position and composition are about the same as 

 the sand river-bank thickets occurring along the Mississippi River 

 in the vicinity of Hanover, Illinois, described by Gleason (1910:142). 

 The bushes form the dominant part, but mixed in with them are 

 lianas, which in places make the vegetation difficult to penetrate. The 

 ground is sandy at the surface, although below it may be somewhat 



