128 



gravcolois 



Arabis lyrata 

 Polanisia 



Cristatella Jamesii 

 Cassia Chamaechrista 

 Baptisia bracteata 

 Amorpha canescens 

 Petalosteuium candidum 

 Petalostcniuni purpureum 



Aster sericeiis 

 Aster linariif alius 

 Antennaria sp. 

 Ambrosia psilostachya 

 Coreopsis palmata 

 Artemisia caudata 

 Senecio Balsainitae 



C. Forest species^ typical of succeeding associations 



Polygonatum commntatum 

 Sniilacina raccniosa 

 Smilax herbacea 

 Smilax ecirrliata 

 Smilax hispida 

 Populus grandidentata 

 Corylus americana 

 Silene sfellata 

 Anemone mrginiana 

 Ribes gracile 

 Riibiis occidentalis 



Priiniis virginiana 

 Rims Toxicodendron 

 Vitis indpina 

 Psedera quinquefolia 

 Cornus Baileyi 

 Monotropa uniflora* 

 Fraxinns pennsylvanica, var. 



lanccolata 

 Bnpatoriiun serotinum 

 Prenanthes alba 



D. Ubiquitous zvceds and naturali.ced species 



Poa pratensis 

 Poa compressa 

 Juncus tenuis 

 Chenopodiuiu album 

 Saponaria o fficinaiis 

 Oxalis corniculata 

 Oenothera biennis 

 Asclcpias syriaca 

 Verbena stricta 



Nepeta Cat aria 

 Leonuriis Cardiaca 

 Solanuni carolinense 

 Solanum nigrum 

 Verbascum Thapsus 

 Brigeron ranwsus 

 Achillea Millefolium 

 Lactuca canadensis 



B. Species of douhtfid position in the sand region 



Silphium integri folium 



Ruuicx altissinius 

 Solidago serotina 



*Not observed in the bur oak association, but, from its general habit, prob- 

 ably more typical there. 



