Geranium maculatum L Spotted geranium. 



Occasional in rich woods. 



SIMAROUBACEAE 



Ailanthus altissima (Mill.) Swingle Ailanthus, tree-of-heaven. 



Frequent in woods and thickets. 



POLYGALACEAE 



Polygala sanguinea L. (P. vmdescens L.) Blood polygala. 



Frequent in dry open ground. 



EUPHORBIACEAE 



Acalypha gracilens Gray Slender copperleaf. 



Cultivated ground. 

 Acalypha rhomboidea Raf. (A. virginica of authors, not Linnaeus) 



Disturbed soil. 

 Euphorbia corollata L Floweringspurge. 



Woods and fields. 

 Euphorbia ipecacuanhae L Ipecac euphorbia. 



Pistol range ridge, locations 42 and 41 only. 

 Euphorbia maculata L. (E. pre slit Guss.) 



Frequent in open ground. 



Euphorbia supina Raf. (E. maculata of authors, not Linnaeus) 



Spotted spurge. 

 Common. 



ANACARDIACEAE 



Rhus copallina L , Flameleaf sumac. 



Thickets and margins of fields. 

 Rhus glabra L Smooth sumac. 



Fields and thickets. 

 Rhus radicans L Poison-ivy. 



Common everywhere. 

 Rhus typhina L Staghorn sumac. 



Occasional in fields and woods. 

 Rhus vernix L. . Poison-sumac. 



Magnolia Swamp in northeastern part of grounds, locations 55 and 56 only. 

 Formerly there was a single large plant in a springy place near the summit of 

 Mount Hamilton, east side, above the azaleas. 



28 



