MARYLAND WEATHEB SERVICE 123 



A typical example of the wet type of Flood Plain has been ex- 

 amined along Miles Creek, about three miles east of Trappe in 

 southern Talbot County, where the predominant trees are the Ked 

 Maple, Black Gum, White Ash, Winterberry and Magnolia. The 

 shrubs are: Clethra alnifolia, Alnus rugosa, Viburnum dentatum, 

 C eplialanthus occidentalis ami Rhus vernix. Characteristic her- 

 baceous species are: Saumrus cernuus, Osmunda cinnamomea, 

 Onoclea sensibilis, Chrysosplenium americanum, Chelone glabra, 

 Triadenum virginicum, Impatiens biflora, Viola blanda, Ranuncu- 

 lus sceleratus, Carex intumescens and Galium triflorum. 



The forest of the drier Flood Plains bears less resemblance to 

 the Stream Swamps, as the trees are of larger stature, the Red 

 Maple and Black Gum are less abundant, and the Winterberry and 

 Cephalanthus are rare : The predominant trees are the Tulip Tree, 

 the Elm, the Sweet Gum, the White Ash, the Buttonwood, the 

 Hornbeam, the Willow Oak, Red Maple and Black Gum. Charac- 

 teristic shrubs and herbs are: Benzoin benzoin, Viburnum den- 

 tatum, Euonymus americanus, Botrycliium virginianum, Homa- 

 locenchrus virginicus, Polygonatum biflorum, Arisaema triphyllurn, 

 Viola blanda, Aster puniceus, Oxalis stricta. 



At several places along Marshyhope Creek in the vicinity of 

 Federalsburg, Caroline County, there are sandy Flood Plains which 

 are of more recent formation than the Talbot terrace and abut 

 directly upon the Wicomico Upland, They are markedly different 

 from the Upland Flood Plains of the Wicomico formation, and are 

 related on the one hand to the Sandy Loam Upland Swamps and 

 on the other to the Stream Swainps which are to be subsequently 

 described. The commonest trees are the Loblolly Pine and the 

 Water Oak; abundantly represented- are the Holly, the Black Gum, 

 the Magnolia, the White Ash, the Fringe Tree, the Dogwood and 

 the Hornbeam. The shrubby and herbaceous vegetation includes 

 Clethra alnifolia, Viburnum dentatum, Azalea nudiflora, Euony- 

 mus americana, Mitcliella repens, Carex intumescens, Carex laxi- 

 culmis and Carex folliculata. Lianes are abundant, including Smi- 

 lax rotundifolia, Parthenocissus quinque folia, Vitis labrusca, Te- 

 coma radicans and Dioscorea villosa. 



These Flood Plains are of interest because of their being (to- 

 gether with the Sandy Loam Upland Swamps) the only forested 



