BOTAXICAL SUEA'EY— SUGAR GROVE REGION 



293 



2. Shade-loving herbs with hihernatiiig' leaves replaced in spring 

 by new ones : 



Hcpatica acntllolxi Eeiiatlca hepatira 



Carex plantaginea Dryopteris spinulosum 



Dryopteris marginalis Unifolium canadense 



Tiarella cordifolia 



i U-- 



llll/.uphiUu,',;. 



3. Evergreen herbs with leaves or shoots ascending sufficiently 

 from the ground partially to surmount a blanket of fallen leaves : 

 Mitchella repens Ganltheria procumbens 



Lycopodium lucidulum Lycopodium complanatum var. 



flabelliforme 



THE UPLAND THICKETS. 

 The Sumac Thickef. There are many steep slopes in the area 

 where the rock comes so close to the surface as to prevent the growth 

 of trees, but yet is not precipitous and retains a thin covering of soil. 

 Here a thicket develops which is dominated by Rhus copallina and 

 Andropogon scopartus. with the following secondary species: 

 Malus glaucescens Specularia perfoJiata 



Ruhus procumbens (Dewberry) Meibomia canescens 



Smilax glauca PotenfiUa canadensis 



Bubus alleghiensis (Highbush B. B.) 



This association originally occupied a vei-y small amount of terri- 

 tory in this area, but since the land has been cleared and cultivated a 



