MARYLAND WEATHER SERVICE 265 



Black Gum. Of the undergrowth, there was an abundance of Phlox 

 subulata, in both the white and the pink flowered forms, Eupatorium 

 coelestinum, Lacinaria scariosa, Lacinaria squarrosa, and Cunila 

 orginoides. 



There is much less of the roadside weed vegetation, such as is 

 abundant in the areas already discussed, the Teazel, Chicory, 

 Thistle and Blue Weed being much less common. This is due to 

 two causes, of which the more important is the decreased amount of 

 hauling of farm produce, from which the seeds may be scattered 

 along the route traversed ; the second is the presence of hardy plants 

 along the edges of the woods which tend to resist invasion by the 

 plants of the agricultural areas. The weeds of the woods come out 

 into the open along the roads, and replace the more common forms. 

 Among the latter were Cunila origanoides, Hypericum prolificum, 

 Asclepias quadrifolia, Anemone virginiana, Aralia nudicaulis, Par- 

 sonsia petiolata, and Dasystoma laevigata. 



Town Creek. — In the neighborhood of Flintstone there is a con- 

 siderable area of rather level bottom land which is in farms, and 

 extends along the valley of Town Creek toward the Potomac, be- 

 coming wider as the river is approached, the soil being mainly ef 

 weathered Bomney shale. Along the edge of the woods, following 

 the valley southward from Flintstone, the following species were 

 recorded : 



Quercus acuminata 

 Hicoria ovata 

 Nyssa sylvatica 

 Liriodendron tidipifera 

 Tilia americana 

 Ulmus americana 

 Quercus alba 

 Acer rubrum 

 Pinus strobus 

 Quercus marylandica 

 Tsuga canadensis 

 Robinia pseudacacia. 



