MARYLAND WEATHER SERVICE 259 



Hamamelis virginiana 

 Tilia americana 

 Quercus alba 

 Hicoria microcarpa 

 Liriodendron tulipifera 

 Viburnum acerifolium 

 Hydrangea arborescens. 



The Linden here first becomes a factor in the forest, in this case 

 reaching 15% to 20% of the stand. In previous occurrences the 

 presence of this tree was merely as a constituent of the woody flora 

 and not as a timber tree. 



The herbaceous vegetation does not change to a great degree, but 

 Panax quincque folium is still present in sufficient abundance to be 

 found by a few minutes' careful search. It occurs in the upper 

 portions of the Blue Ridge, but is now so infrequent as to escape 

 discovery, unless one spends hours in the search. The herbaceous 

 plants include the following: 



Campanula americana 

 Scrophularia marylandica 

 Sanicula marylandica 

 Parihenocissus quinque folia 

 Celastrus scandens 

 Asarum canadense 

 Asplenium platyneuron 

 Adiantum pedatum 

 Botrychium virginianum 

 Aster divaricatus 

 Phlox siLbidata 

 Washingtonia longistylis 

 Washingtonia claytoni 

 Cimcifuga racemosa 

 Dioscorea villosa 

 Dryopteris marginalis 

 Dryopteris acrostichoides 

 Sanguinaria canadensis 

 Circea lutetiana 

 Podophyllum peltatum. 



